systemic mastocytosis

Systemic mastocytosis (SM) comprises a heterogeneous group of rare acquired and chronic hematological malignancies that are related to an abnormal proliferation of mast cells in tissue, including bone marrow, with or without skin involvement.


Acute Moraxella catarrhalis bronchitis

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ovarian cyst

A cyst that arises from the ovary. Representative examples include simple, complex, corpus luteum, and endometrioid cysts. Symptoms include pelvic and abdominal pain and irregular periods.


Ketorolac

A pyrrolizine carboxylic acid derivative structurally related to INDOMETHACIN. It is a non-steroidal anti-inflammatory agent used for analgesia for postoperative pain and inhibits cyclooxygenase activity.

A racemate comprising equimolar amounts of (R)-(+)- and (S)-(-)-5-benzoyl-2,3-dihydro-1H-pyrrolizine-1-carboxylic acid. While only the (S)-(-) enantiomer is a COX1 and COX2 inhibitor, the (R)-(+) enantiomer exhibits potent analgesic activity. A non-steroidal anti-inflammatory drug, ketorolac is mainly used (generally as the tromethamine salt) for its potent analgesic properties in the short-term management of post-operative pain, and in eye drops to relieve the ocular itching associated with seasonal allergic conjunctivitis. It was withdrawn from the market in many countries in 1993 following association with haemorrhage and renal failure.


Lamotrigine

A phenyltriazine compound, sodium and calcium channel blocker that is used for the treatment of SEIZURES and BIPOLAR DISORDER.

A member of the class of 1,2,4-triazines in which the triazene skeleton is substituted by amino groups at positions 3 and 5, and by a 2,3-dichlorophenyl group at position 6.


Latanoprost

A prostaglandin F analog used to treat OCULAR HYPERTENSION in patients with GLAUCOMA.

A prostaglandin Falpha that is the isopropyl ester prodrug of latanoprost free acid. Used in the treatment of open-angle glaucoma and ocular hypertension.


2-Mercaptoethanesulfonic acid

A sulfhydryl compound used to prevent urothelial toxicity by inactivating metabolites from ANTINEOPLASTIC AGENTS, such as IFOSFAMIDE or CYCLOPHOSPHAMIDE.

An organosulfonic acid consisting of sulfonic acid having a 2-mercaptoethyl group attached to sulfur.


Impaired Healing

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Improper body tissue repair due to factors affecting one or more of the phases of wound healing, including hemostasis, inflammation, proliferation, and remodeling.


Lisinopril

One of the ANGIOTENSIN-CONVERTING ENZYME INHIBITORS (ACE inhibitors), orally active, that has been used in the treatment of hypertension and congestive heart failure.


Loratadine

A second-generation histamine H1 receptor antagonist used in the treatment of allergic rhinitis and urticaria. Unlike most classical antihistamines (HISTAMINE H1 ANTAGONISTS) it lacks central nervous system depressing effects such as drowsiness.

A benzocycloheptapyridine that is 6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine substituted by a chloro group at position 8 and a 1-(ethoxycarbonyl)piperidin-4-ylidene group at position 11. It is a H1-receptor antagonist commonly employed in the treatment of allergic disorders.


Loracarbef

1-carbacephem antibiotic; has a broad spectrum of antimicrobial activity; structure given in first source; carbacephems differ from cephalosporins in the substitution of a sulfur atom in the dihydrothiazine ring with a methylene group to form a tetrahydropyridine ring

A synthetic "carba" analogue of cefaclor, with carbon replacing sulfur at position 1. Used to treat a wide range of infections caused by both gram-positive and gram-negative bacteria.


chronic pyelonephritis

Persistent pyelonephritis.


Methylphenidate

A central nervous system stimulant used most commonly in the treatment of ATTENTION DEFICIT DISORDER in children and for NARCOLEPSY. Its mechanisms appear to be similar to those of DEXTROAMPHETAMINE. The d-isomer of this drug is referred to as DEXMETHYLPHENIDATE HYDROCHLORIDE.

A racemate comprising equimolar amounts of the two threo isomers of methyl phenyl(piperidin-2-yl)acetate. A central stimulant and indirect-acting sympathomimetic, is used (generally as the hydrochloride salt) in the treatment of hyperactivity disorders in children and for the treatment of narcolepsy.


Methadone

A synthetic opioid that is used as the hydrochloride. It is an opioid analgesic that is primarily a mu-opioid agonist. It has actions and uses similar to those of MORPHINE. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1082-3)

A ketone that is heptan-3-one substituted by a dimethylamino group at position 6 and two phenyl groups at position 4.


Methicillin

One of the PENICILLINS which is resistant to PENICILLINASE but susceptible to a penicillin-binding protein. It is inactivated by gastric acid so administered by injection.

A penicillin that is 6-aminopenicillanic acid in which one of the amino hydrogens is replaced by a 2,6-dimethoxybenzoyl group.


Methocarbamol

A centrally acting muscle relaxant whose mode of action has not been established. It is used as an adjunct in the symptomatic treatment of musculoskeletal conditions associated with painful muscle spasm. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1206)

A racemate comprising equimolar amounts of (R)- and (S)-methocarbamol. A centrally acting skeletal muscle relaxant, it is used as an adjunct in the short-term symptomatic treatment of painful muscle spasm. The (R)-enantiomer is more active than the (S)-enantiomer.


Levomepromazine

A phenothiazine with pharmacological activity similar to that of both CHLORPROMAZINE and PROMETHAZINE. It has the histamine-antagonist properties of the antihistamines together with CENTRAL NERVOUS SYSTEM effects resembling those of chlorpromazine. (From Martindale, The Extra Pharmacopoeia, 30th ed, p604)

A member of the class of  phenothiazines that is 10H-phenothiazine substituted by a (2R)-3-(dimethylamino)-2-methylpropyl group and a methoxy group at positions 10 and 2 respectively.


Methadyl acetate

A narcotic analgesic with a long onset and duration of action.


digestive system disorder

A disease or disorder that involves the digestive system.


Minocycline

A TETRACYCLINE analog, having a 7-dimethylamino and lacking the 5 methyl and hydroxyl groups, which is effective against tetracycline-resistant STAPHYLOCOCCUS infections.

A tetracycline analogue having a dimethylamino group at position 7 and lacking the methyl and hydroxy groups at position 5.


Nandrolone

C18 steroid with androgenic and anabolic properties. It is generally prepared from alkyl ethers of ESTRADIOL to resemble TESTOSTERONE but less one carbon at the 19 position.

A 3-oxo Delta(4)-steroid that is estr-4-en-3-one substituted by a beta-hydroxy group at position 17.


A non-selective beta-adrenergic antagonist with a long half-life, used in cardiovascular disease to treat arrhythmias, angina pectoris, and hypertension. Nadolol is also used for MIGRAINE DISORDERS and for tremor.


Nafcillin

A semi-synthetic antibiotic related to penicillin.

A penicillin in which the substituent at position 6 of the penam ring is a (2-ethoxy-1-naphthoyl)amino group.


Nicotinamide

An important compound functioning as a component of the coenzyme NAD. Its primary significance is in the prevention and/or cure of blacktongue and PELLAGRA. Most animals cannot manufacture this compound in amounts sufficient to prevent nutritional deficiency and it therefore must be supplemented through dietary intake.

A pyridinecarboxamide that is pyridine in which the hydrogen at position 3 is replaced by a carboxamide group.


Mupirocin

A topically used antibiotic from a strain of Pseudomonas fluorescens. It has shown excellent activity against gram-positive staphylococci and streptococci. The antibiotic is used primarily for the treatment of primary and secondary skin disorders, nasal infections, and wound healing.

An alpha,beta-unsaturated ester resulting from the formal condensation of the alcoholic hydroxy group of 9-hydroxynonanoic acid with the carboxy group of (2E)-4-[(2S)-tetrahydro-2H-pyran-2-yl]-3-methylbut-2-enoic acid in which the tetrahydropyranyl ring is substituted at positions 3 and 4 by hydroxy groups and at position 5 by a {(2S,3S)-3-[(2S,3S)-3-hydroxybutan-2-yl]oxiran-2-yl}methyl group. Originally isolated from the Gram-negative bacterium Pseudomonas fluorescens, it is used as a topical antibiotic for the treatment of Gram-positive bacterial infections.


Mycophenolate mofetil

Mycophenolate mofetil is a prodrug of mycophenolic acid, an inhibitor of inosine-5'-monophosphate dehydrogenase. MPA depletes guanosine nucleotides preferentially in T and B lymphocytes and inhibits their proliferation.

A carboxylic ester resulting from the formal condensation between the carboxylic acid group of mycophenolic acid and the hydroxy group of 2-(morpholin-4-yl)ethanol. In the liver, it is metabolised to mycophenolic acid, an immunosuppressant for which it is a prodrug. It is widely used to prevent tissue rejection following organ transplants as well as for the treatment of certain autoimmune diseases.


heart valve disorder

A disease involving the cardial valve.


Nilotinib

Nilotinib is an inhibitor of the BCR-ABL kinase. Nilotinib binds to and stabilizes the inactive conformation of the kinase domain of ABL protein. In vitro, nilotinib inhibited BCR-ABL mediated proliferation of murine leukemic cell lines and human cell lines derived from patients with Ph+ CML. Under the conditions of the assays, nilotinib was able to overcome imatinib resistance resulting from BCR-ABL kinase mutations, in 32 out of 33 mutations tested. In vivo, nilotinib reduced the tumor size in a murine BCR-ABL xenograft model.


Nimodipine

A calcium channel blockader with preferential cerebrovascular activity. It has marked cerebrovascular dilating effects and lowers blood pressure.

A dihydropyridine that is 1,4-dihydropyridine which is substituted by methyl groups at positions 2 and 6, a (2-methoxyethoxy)carbonyl group at position 3, a m-nitrophenyl group at position 4, and an isopropoxycarbonyl group at position 5. An L-type calcium channel blocker, it acts particularly on cerebral circulation, and is used both orally and intravenously for the prevention and treatment of subarachnoid hemorrhage from ruptured intracranial aneurysm.


subarachnoid hemorrhage

Intracranial hemorrhage into the subarachnoid space.


Olmesartan medoxomil

Olmesartan blocks the vasoconstrictor effects of angiotensin II by selectively blocking the binding of angiotensin II to the AT1 receptor in vascular smooth muscle.


Ondansetron

A competitive serotonin type 3 receptor antagonist. It is effective in the treatment of nausea and vomiting caused by cytotoxic chemotherapy drugs, including cisplatin, and has reported anxiolytic and neuroleptic properties.


Orlistat

A lactone derivative of LEUCINE that acts as a pancreatic lipase inhibitor to limit the absorption of dietary fat; it is used in the management of obesity.

A carboxylic ester resulting from the formal condensation of the carboxy group of N-formyl-L-leucine with the hydroxy group of (3S,4S)-3-hexyl-4-[(2S)-2-hydroxytridecyl]oxetan-2-one. A pancreatic lipase inhibitor, it is used as an anti-obesity drug.


Pemetrexed

Pemetrexed is a folate analog metabolic inhibitor that disrupts folate-dependent metabolic processes essential for cell replication. In vitro studies show that pemetrexed inhibits thymidylate synthase (TS), dihydrofolate reductase, and glycinamide ribonucleotide formyltransferase (GARFT), which are folate-dependent enzymes involved in the de novo biosynthesis of thymidine and purine nucleotides. Pemetrexed is taken into cells by membrane carriers such as the reduced folate carrier and membrane folate binding protein transport systems. Once in the cell, pemetrexed is converted to polyglutamate forms by the enzyme folylpolyglutamate synthetase. The polyglutamate forms are retained in cells and are inhibitors of TS and GARFT.

An N-acylglutamic acid in which the N-acyl group is specified as 4-[2-(2-amino-4-oxo-4,7-dihydro-1H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoyl. Inhibits thymidylate synthase (TS), 421 dihydrofolate reductase (DHFR), and glycinamide ribonucleotide formyltransferase (GARFT).


malignant pleural mesothelioma

A malignant neoplasm that arises from mesothelial cells in the pleura and shows a diffuse growth pattern. It arises on the parietal and sometimes visceral pleura as multiple small nodules that later become confluent and invade the chest wall adipose tissue and muscle. Asbestos exposure is the main cause for the development of pleural malignant mesothelioma. It usually affects patients over sixty years of age. The latency period is long. Patients usually present with pleural effusion, dyspnea and chest wall pain. Additional signs and symptoms include chills, sweating, weight loss, and weakness. Morphologic variants include epithelioid, desmoplastic, sarcomatoid, and biphasic mesothelioma. The clinical course is usually aggressive.


streptococcal toxic-shock syndrome

Streptococcal toxic-shock syndrome (streptococcal TSS) is an acute disease mediated by the production of superantigenic toxins characterized by the sudden onset of fever and other febrile symptoms, pain, multisystem organ involvement and potentially leading to coma, shock and death due to a Streptococcus pyogenes infection.


vitamin B12 deficiency

A disease characterized by low serum levels of vitamin B12, either inherited or acquired.


G6PD deficiency

An X-linked genetic condition caused by alterations in the gene G6PD that result in moderately to severely decreased activity levels of the enzyme glucose-6-phosphate dehydrogenase. Most individuals with G6PD deficiency are asymptomatic. Individuals with G6PD variants that cause G6PD deficiency are at risk for acute hemolytic anemia in response to certain medication exposures, chemical exposures, infections, or consumption of fava beans.


musculoskeletal system disorder

A disease involving the musculoskeletal system.


Pramipexole

A dopamine agonist that binds with high selectivity and specificity to the D2 subfamily of dopamine receptors of which it has a preferential affinity to D3 receptors, and has full intrinsic activity. Pramipexole alleviates parkinsonian motor deficits by stimulation of dopamine receptors in the striatum. Animal studies have shown that pramipexole inhibits dopamine synthesis, release, and turnover.

A member of the class of benzothiazoles that is 4,5,6,7-tetrahydro-1,3-benzothiazole in which the hydrogens at the 2 and 6-pro-S-positions are substituted by amino and propylamino groups, respectively.


Procaine

A local anesthetic of the ester type that has a slow onset and a short duration of action. It is mainly used for infiltration anesthesia, peripheral nerve block, and spinal block. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1016).

A benzoate ester, formally the result of esterification of 4-aminobenzoic acid with 2-diethylaminoethanol but formed experimentally by reaction of ethyl 4-aminobenzoate with 2-diethylaminoethanol.


infectious mononucleosis

A condition characterized by an increase in mononuclear white blood cells and swollen lymph nodes, which is usually caused by infection with the Epstein-Barr virus.


Procainamide

A class Ia antiarrhythmic drug that is structurally-related to PROCAINE.

A benzamide that is 4-aminobenzamide substituted on the amide N by a 2-(diethylamino)ethyl group.  It is a pharmaceutical antiarrhythmic agent used for the medical treatment of cardiac arrhythmias.


Rosiglitazone

A thiazolidinedione that functions as a selective agonist for PPAR GAMMA. It improves INSULIN SENSITIVITY in adipose tissue, skeletal muscle, and the liver of patients with TYPE 2 DIABETES MELLITUS.


Hypothermia

Reduced body temperature due to failed thermoregulation.


Trimethadione

An anticonvulsant effective in absence seizures, but generally reserved for refractory cases because of its toxicity. (From AMA Drug Evaluations Annual, 1994, p378)

An oxazolidinone that is 1,3-oxazolidine-2,4-dione substituted by methyl groups at positions 3, 5 and 5. It is an antiepileptic agent.


Triethylenemelamine

Toxic alkylating agent used in industry; also as antineoplastic and research tool to produce chromosome aberrations and cancers.


Dyssynergia

A type of ataxia characterized by the impairment of the ability to smoothly perform the elements of a voluntary movement in the appropriate order and speed. With dyssynergia, a voluntary movement appears broken down into its component parts.


Triflupromazine

A phenothiazine used as an antipsychotic agent and as an antiemetic.

A member of the class of phenothiazines that is 10H-phenothiazine having a trifluoromethyl subsitituent at the 2-position and a 3-(dimethylamino)propyl group at the N-10 position.


Trimipramine

Tricyclic antidepressant similar to IMIPRAMINE, but with more antihistaminic and sedative properties.

A dibenzoazepine that is 10,11-dihydro-5H-dibenzo[b,f]azepine substituted by a 3-(dimethylamino)-2-methylpropyl group at the nitrogen atom. It is used as an antidepressant.


Verapamil

A calcium channel blocker that is a class IV anti-arrhythmia agent.

A tertiary amino compound that is 3,4-dimethoxyphenylethylamine in which the hydrogens attached to the nitrogen are replaced by a methyl group and a 4-cyano-4-(3,4-dimethoxyphenyl)-5-methylhexyl group.


A primary alcohol that is 1,3-thiazol-3-ium substituted by (4-amino-2-methylpyrimidin-5-yl)methyl, methyl and 2-hydroxyethyl groups at positions 3, 4 and 5, respectively.


Riboflavin

Nutritional factor found in milk, eggs, malted barley, liver, kidney, heart, and leafy vegetables. The richest natural source is yeast. It occurs in the free form only in the retina of the eye, in whey, and in urine; its principal forms in tissues and cells are as FLAVIN MONONUCLEOTIDE and FLAVIN-ADENINE DINUCLEOTIDE.

D-Ribitol in which the hydroxy group at position 5 is substituted by a 7,8-dimethyl-2,4-dioxo-3,4-dihydrobenzo[g]pteridin-10(2H)-yl moiety. It is a nutritional factor found in milk, eggs, malted barley, liver, kidney, heart, and leafy vegetables, but the richest natural source is yeast. The free form occurs only in the retina of the eye, in whey, and in urine; its principal forms in tissues and cells are as flavin mononucleotide and flavin-adenine dinucleotide.


Vecuronium

Monoquaternary homolog of PANCURONIUM. A non-depolarizing neuromuscular blocking agent with shorter duration of action than pancuronium. Its lack of significant cardiovascular effects and lack of dependence on good kidney function for elimination as well as its short duration of action and easy reversibility provide advantages over, or alternatives to, other established neuromuscular blocking agents.

A 5alpha-androstane compound having 3alpha-acetoxy-, 17beta-acetoxy-, 2beta-piperidino- and 16beta-N-methylpiperidinium substituents.


cirrhosis of liver

A disorder characterized by replacement of the liver parenchyma with fibrous tissue and regenerative nodules. It is usually caused by alcoholism, hepatitis B, and hepatitis C. Complications include the development of ascites, esophageal varices, bleeding, and hepatic encephalopathy.


Trovafloxacin

a trifluoronaphthyridone derivative of 7-(3-azabicyclo(3.1.0)hexyl)naphthyridone; has antineoplastic activity

A 1,8-naphthyridine derivative that is 4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid bearing additional 2,4-difluorophenyl, fluoro and  6-amino-3-azabicyclo[3.1.0]hex-3-yl substituents at positions 1, 6 and 7 respectively. A broad-spectrum antibiotic that was withdrawn from the market due to risk of liver failure.


Uracil mustard

Nitrogen mustard derivative of URACIL. It is a alkylating antineoplastic agent that is used in lymphatic malignancies, and causes mainly gastrointestinal and bone marrow damage.


Zolpidem

An imidazopyridine derivative and short-acting GABA-A receptor agonist that is used for the treatment of INSOMNIA.

An imidazo[1,2-a]pyridine compound having a 4-tolyl group at the 2-position, an N,N-dimethylcarbamoylmethyl group at the 3-position and a methyl substituent at the 6-position.


Cognitive impairment

Abnormal cognition with deficits in thinking, reasoning, or remembering.


Capreomycin

Cyclic peptide antibiotic similar to VIOMYCIN. It is produced by Streptomyces capreolus.


Estrone

An aromatized C18 steroid with a 3-hydroxyl group and a 17-ketone, a major mammalian estrogen. It is converted from ANDROSTENEDIONE directly, or from TESTOSTERONE via ESTRADIOL. In humans, it is produced primarily by the cyclic ovaries, PLACENTA, and the ADIPOSE TISSUE of men and postmenopausal women.

A 17-oxo steroid that is estra-1,3,5(10)-triene substituted by an hydroxy group at position 3 and an oxo group at position 17.


dementia

Loss of intellectual abilities interfering with an individual's social and occupational functions. Causes include Alzheimer's disease, brain injuries, brain tumors, and vascular disorders.


Doxacurium

according to Unlisted Drugs, BW-A938U is a bis-benzylisoquinolinium diester and a highly potent neuromuscular blocker

A mixture of the (1R,2S,1'S,2'R), (1R,2S,1'R,2'S) and (1S,2R,1'S,2'R) stereoisomers (a meso isomer and two enantiomers, respectively) of 2,2'-[(1,4-dioxobutane-1,4-diyl)bis(oxypropane-3,1-diyl)]bis[6,7,8-trimethoxy-2-methyl-1-(3,4,5-trimethoxybenzyl)-1,2,3,4-tetrahydroisoquinolinium], all of which are in a trans configuration at the 1 and 2 positions of the tetrahydroisoquinolinium rings. A competitive neuromuscular blocker, the chloride salt is used to provide muscle relaxation in general anaesthesia and to facilitate mechanical ventilation in patients in intensive care.


Phytonadione

A lipid cofactor that is required for normal blood clotting. Several forms of vitamin K have been identified: VITAMIN K 1 (phytomenadione) derived from plants, VITAMIN K 2 (menaquinone) from bacteria, and synthetic naphthoquinone provitamins, VITAMIN K 3 (menadione). Vitamin K 3 provitamins, after being alkylated in vivo, exhibit the antifibrinolytic activity of vitamin K. Green leafy vegetables, liver, cheese, butter, and egg yolk are good sources of vitamin K.

A member of the class of phylloquinones that consists of 1,4-naphthoquinone having methyl and phytyl groups at positions 2 and 3 respectively. The parent of the class of phylloquinones.


hyperphosphatemia

Abnormally high level of phosphate in the blood.


Lisdexamfetamine

A dextroamphetamine drug precursor that also functions as a CENTRAL NERVOUS SYSTEM STIMULANT and DOPAMINE UPTAKE INHIBITOR and is used in the treatment of ATTENTION DEFICIT HYPERACTIVITY DISORDER.


gastric cancer

A primary or metastatic malignant neoplasm involving the stomach.


Lithium Carbonate

A lithium salt, classified as a mood-stabilizing agent. Lithium ion alters the metabolism of BIOGENIC MONOAMINES in the CENTRAL NERVOUS SYSTEM, and affects multiple neurotransmission systems.


Rivaroxaban

A morpholine and thiophene derivative that functions as a FACTOR XA INHIBITOR and is used in the treatment and prevention of DEEP-VEIN THROMBOSIS and PULMONARY EMBOLISM.  It is also used for the prevention of STROKE and systemic embolization in patients with non-valvular ATRIAL FIBRILLATION, and for the prevention of atherothrombotic events in patients after an ACUTE CORONARY SYNDROME.

A monocarboxylic acid amide obtained by formal condensation of the carboxy group of 5-chlorothiophene-2-carboxylic acid with the amino group of 4-{4-[(5S)-5-(aminomethyl)-2-oxo-1,3-oxazolidin-3-yl]phenyl}morpholin-3-one. An anticoagulant used for prophylaxis of venous thromboembolism in patients with knee or hip replacement surgery.


Fingolimod

A sphingosine-derivative and IMMUNOSUPPRESSIVE AGENT that blocks the migration and homing of LYMPHOCYTES to the CENTRAL NERVOUS SYSTEM through its action on SPHINGOSINE 1-PHOSPHATE RECEPTORS. It is used in the treatment of MULTIPLE SCLEROSIS.

An aminodiol that consists of propane-1,3-diol having amino and 2-(4-octylphenyl)ethyl substituents at the 2-position. It is a sphingosine 1-phosphate receptor modulator used for the treatment of relapsing-remitting multiple sclerosis. A prodrug, fingolimod is phosphorylated by sphingosine kinase to active metabolite fingolimod-phosphate, a structural analogue of sphingosine 1-phosphate.


Hydroxyprogesterone caproate

Hydroxyprogesterone derivative that acts as a PROGESTIN and is used to reduce the risk of recurrent MISCARRIAGE and of PREMATURE BIRTH. It is also used in combination with ESTROGEN in the management of MENSTRUATION DISORDERS.


Doripenem

A carbapenem derivative antibacterial agent that is more stable to renal dehydropeptidase I than IMIPENEM, but does not need to be given with an enzyme inhibitor such as CILASTATIN. It is used in the treatment of infections such as HOSPITAL-ACQUIRED PNEUMONIA, and complicated intra-abdominal or urinary-tract infections, including PYELONEPHRITIS.


Sulfur

An element that is a member of the chalcogen family. It has an atomic symbol S, atomic number 16, and atomic weight [32.059; 32.076]. It is found in the amino acids cysteine and methionine.


dermatitis

An inflammatory process affecting the skin. Signs include red rash, itching, and blister formation. Representative examples are contact dermatitis, atopic dermatitis, and seborrheic dermatitis.


Tinnitus

Tinnitus is an auditory perception that can be described as the experience of sound, in the ear or in the head, in the absence of external acoustic stimulation.


Abnormal uterine bleeding unrelated to menstrual cycle


hearing disorder

A disorder characterized by the partial or complete loss of the ability to detect sounds due to damage to the ear structures or inability of the brain to properly interpret or process the auditory signals it receives from the anatomic structures of the ear.


Paliperidone Palmitate

A benzisoxazole derivative and active metabolite of RISPERIDONE that functions as a DOPAMINE D2 RECEPTOR ANTAGONIST and SEROTONIN 5-HT2 RECEPTOR ANTAGONIST. It is an ANTIPSYCHOTIC AGENT used in the treatment of SCHIZOPHRENIA.

A racemate comprising equimolar amounts of (R)- and (S)-paliperidone palmitate. A long-acting injectable formulation of paliperidone (the major active metabolite of risperidone) that is used for treatment of schizophrenia.


COLISTIN

Cyclic polypeptide antibiotic from Bacillus colistinus. It is composed of Polymyxins E1 and E2 (or Colistins A, B, and C) which act as detergents on cell membranes. Colistin is less toxic than Polymyxin B, but otherwise similar; the methanesulfonate is used orally.

A multi-component mixture comprising mostly of colistin A (R = Me) and B (R = H), with small amounts of colistin C and other polymyxins, produced by certain strains of Bacillus polymyxa var. colistinus. An antibiotic, it is used as its sulfate salt (for oral or topical use) or as the sodium salt of the N-methylsulfonic acid derivative (the injectable form) in the treatment of severe Gram-negative infections, partiularly those due to Pseudomonas aeruginosa.


Iodine

A nonmetallic element of the halogen group that is represented by the atomic symbol I, atomic number 53, and atomic weight of 126.90. It is a nutritionally essential element, especially important in thyroid hormone synthesis. In solution, it has anti-infective properties and is used topically.

Molecule comprising two covalently bonded iodine atoms with overall zero charge..


Zinc Gluconate

zinc gluconate has anti-inflammatory activity; RN given refers to (D)-isomer; all RRs refers to (D)-isomer unless otherwise noted


Alclometasone dipropionate

A prednisolone compound having an alpha-chloro substituent at the 7-position, an alpha-methyl substituent at the 16-position and O-propanoyl groups at the 17- and 21-positions.


contact dermatitis

An inflammatory skin condition caused by direct contact between the skin and either an irritating substance or an allergen.


ileus

Decrease in peristalsis in the absence of a mechanical bowel obstruction.


Aluminum Phosphate

gel used as immunologic adjuvent; RN given refers to Al salt


Androgen insufficiency

Insufficient amount of androgenic activity.


Potassium dihydrogen phosphate

A potassium salt in which dihydrogen phosphate(1-) is the counterion.


Leukocytosis

An abnormal increase in the number of leukocytes in the blood.


Silicon Dioxide

A non-crystalline form of silicon oxide that has absorptive properties. It is commonly used as a desiccating agent and as a stationary phase for CHROMATOGRAPHY. The fully hydrated form of silica gel has distinct properties and is referred to as SILICIC ACID.

A silicon oxide made up of linear triatomic molecules in which a silicon atom is covalently bonded to two oxygens.


hemorrhoid

Dilated veins in the anal canal.


Traumatic injury

Damage inflicted on the body as the direct or indirect result of an external force, with or without disruption of structural continuity.


meningeal tuberculosis

A bacterial infection of the membranes covering the brain and the spinal cord caused by Mycobacterium tuberculosis.


The purified component of HEMATOPORPHYRIN DERIVATIVE, it consists of a mixture of oligomeric porphyrins. It is used in photodynamic therapy (HEMATOPORPHYRIN PHOTORADIATION); to treat malignant lesions with visible light and experimentally as an antiviral agent. It is the first drug to be approved in the use of PHOTODYNAMIC THERAPY in the United States.

The sodium salt of porfimer. The purified component of haematoporphyrin derivative, it consists of a mixture of oligomeric porphyrins formed by ether and ester linkages of up to eight porphyrin units (n = 0-6), where R = CH(OH)Me and/or CH=CH2. After addition of hydrochloric acid and/or sodium hydroxide to pH 7.2 - 7.9, it is used as a photosensitiser in photodynamic therapy of non-small cell lung cancer, oesophageal cancer, and superficial bladder cancer. The drug is administered by slow intravenous injection and accumulates in malignant tissue. After 40-50 hours, it is activated by laser light at 630 nm, delivered to the tumour using a fibre optic guide. Subsequent spin transfer to oxygen molecules within the tissue, generates highly reactive singlet oxygen, and subsequent radical reactions generate superoxide and hydroxyl radicals. Propagation of radical reactions ultimately kills the tumour cells.


Pazopanib

Pazopanib is a multi-tyrosine kinase inhibitor of vascular endothelial growth factor receptor (VEGFR)-1, VEGFR-2, VEGFR-3, platelet-derived growth factor receptor (PDGFR)-α and -β, fibroblast growth factor receptor (FGFR)-1 and -3, cytokine receptor (Kit), interleukin-2 receptor-inducible T-cell kinase (Itk), leukocyte-specific protein tyrosine kinase (Lck), and transmembrane glycoprotein receptor tyrosine kinase (c-Fms). In vitro, pazopanib inhibited ligand-induced autophosphorylation of VEGFR-2, Kit, and PDGFR-β receptors. In vivo, pazopanib inhibited VEGF-induced VEGFR-2 phosphorylation in mouse lungs, angiogenesis in a mouse model, and the growth of some human tumor xenografts in mice.

A pyrimidine that is 5-(pyrimidin-2-yl}amino-2-methylbenzenesulfonamide substituted at position 4 by a (2,3-dimethylindazol-6-yl)(methyl)amino group. Used as its hydrochloride salt for treatment of kidney cancer.


Phenyl salicylate

A benzoate ester that is the phenyl ester of salicylic acid. Also known as salol, it can be formed by heating salicylic acid with phenol and is used in the manufacture of some polymers, lacquers, adhesives, waxes and polishes.


Methionine

A sulfur-containing essential L-amino acid that is important in many body functions.

The L-enantiomer of methionine.


Sodium lactate

The sodium salt of racemic or inactive lactic acid. It is a hygroscopic agent used intravenously as a systemic and urinary alkalizer.

An organic sodium salt having lactate as the counterion.


Sulfanilamide

Sulfanilamide has been a useful ingredient of vaginal formulations for about four decades. It blocks certain metabolic processes essential for the growth of susceptible bacteria.

A sulfonamide in which the sulfamoyl functional group is attached to aniline at the 4-position.


Sulfadoxine

A long acting sulfonamide that is used, usually in combination with other drugs, for respiratory, urinary tract, and malarial infections.

A sulfonamide consisting of pyrimidine having methoxy substituents at the 5- and 6-positions and a 4-aminobenzenesulfonamido group at the 4-position. In combination with the antiprotozoal pyrimethamine (CHEBI:8673) it is used as an antimalarial.


Sulfamethizole

A sulfonamide consisting of a 1,3,4-thiadiazole nucleus with a methyl substituent at C-5 and a 4-aminobenzenesulfonamido group at C-2.


Streptomycin

An antibiotic produced by the soil actinomycete Streptomyces griseus. It acts by inhibiting the initiation and elongation processes during protein synthesis.

A amino cyclitol glycoside that consists of streptidine having a disaccharyl moiety attached at the 4-position. The parent of the streptomycin class


Succinylcholine

A quaternary skeletal muscle relaxant usually used in the form of its bromide, chloride, or iodide. It is a depolarizing relaxant, acting in about 30 seconds and with a duration of effect averaging three to five minutes. Succinylcholine is used in surgical, anesthetic, and other procedures in which a brief period of muscle relaxation is called for.

A quaternary ammonium ion that is the bis-choline ester of succinic acid.


Telmisartan

A biphenyl compound and benzimidazole derivative that acts as an angiotensin II type 1 receptor antagonist. It is used in the management of HYPERTENSION.

A member of the class of  benzimidazoles  used widely in the treatment of hypertension.


renal artery obstruction

Narrowing or occlusion of the renal artery or arteries. It is due usually to atherosclerosis; fibromuscular dysplasia; thrombosis; embolism, or external pressure. The reduced renal perfusion can lead to renovascular hypertension (hypertension, renovascular).


Tenofovir disoproxil

Tenofovir disoproxil fumarate is the fumarate salt of the prodrug tenofovir disoproxil. Tenofovir disoproxil is absorbed and converted to the active substance tenofovir, which is a nucleoside monophosphate (nucleotide) analogue. Tenofovir is then converted to the active metabolite, tenofovir diphosphate, an obligate chain terminator, by constitutively expressed cellular enzymes. Tenofovir diphosphate has an intracellular half-life of 10 hours in activated and 50 hours in resting peripheral blood mononuclear cells (PBMCs). Tenofovir diphosphate inhibits HIV-1 reverse transcriptase and the HBV polymerase by direct binding competition with the natural deoxyribonucleotide substrate and, after incorporation into DNA, by DNA chain termination. Tenofovir diphosphate is a weak inhibitor of cellular polymerases alpha, beta, and gamma. At concentrations of up to 300 umol/l, tenofovir has also shown no effect on the synthesis of mitochondrial DNA or the production of lactic acid in in vitro assays.

An organic phosphonate that is the disoproxil ester of tenofovir. A prodrug for tenofovir, an HIV-1 reverse transcriptase inhibitor, tenofovir disoproxil is used as the fumaric acid salt in combination therapy for the treatment of HIV infection.


a nonbenzamide 5-hydroxytryptamine(4) agonist; used in treatment of irritable bowel syndrome; marketing suspended 2007 in US due to higher incidence of MI, stroke, and unstable angina; structure given in first source


Temozolomide

Temozolomide is not directly active but undergoes rapid nonenzymatic conversion at physiologic pH to the reactive compound 5-(3-methyltriazen1-yl)-imidazole-4-carboxamide (MTIC). The cytotoxicity of MTIC is thought to be primarily due to alkylation of DNA.

An imidazotetrazine that is 3,4-dihydroimidazo[5,1-d][1,2,3,5]tetrazine which is substituted at positions 3, 4, and 8 by methyl, oxo, and carboxamide groups, respectively. A prodrug for MTIC (5-(3-methyltriaz-1-en-1-yl)-1H-imidazole-4-carboxamide, formed by spontaneous hydrolysis of temozolomide in the body), it is used as an oral alkylating agent for the treatment of newly diagnosed malignant  glioblastoma multiforme (concomitantly with radiotherapy) and malignant melanoma.


acute promyelocytic leukemia

An aggressive form of acute myeloid leukemia (AML), characterized by arrest of leukocyte differentiation at the promyelocyte stage, due to a specific chromosomal translocation t(15;17) in myeloid cells. APL manifests with easy bruising, hemorrhagic diathesis and fatigue.


Toremifene

A first generation selective estrogen receptor modulator (SERM). Like TAMOXIFEN, it is an estrogen agonist for bone tissue and cholesterol metabolism but is antagonistic on mammary and uterine tissue.


Tranexamic acid

Antifibrinolytic hemostatic used in severe hemorrhage.


Ticarcillin

An antibiotic derived from penicillin similar to CARBENICILLIN in action.

A penicillin compound having a 6beta-[(2R)-2-carboxy-2-thiophen-3-ylacetyl]amino side-group.


Tobramycin

An aminoglycoside, broad-spectrum antibiotic produced by Streptomyces tenebrarius. It is effective against gram-negative bacteria, especially the PSEUDOMONAS species. It is a 10% component of the antibiotic complex, NEBRAMYCIN, produced by the same species.

A amino cyclitol glycoside that is kanamycin B lacking the 3-hydroxy substituent from the 2,6-diaminoglucose ring.


Brain abscess

A collection of pus, immune cells, and other material in the brain.


aplastic anemia

Anemia resulting from bone marrow failure (aplastic or hypoplastic bone marrow). The production of erythroblasts and red cells is markedly decreased, and it may be associated with decreased production of granulocytes (granulocytopenia) and platelets (thrombocytopenia) as well. Aplastic anemia may be idiopathic or secondary due to bone marrow damage by toxins, radiation, or immunologic factors.


Tizanidine

Tizanidine is an agonist at alpha2-adrenergic receptor sites and presumably reduces spasticity by increasing presynaptic inhibition of motor neurons. In animal models, tizanidine has no direct effect on skeletal muscle fibers or the neuromuscular junction, and no major effect on monosynaptic spinal reflexes. The effects of tizanidine are greatest on polysynaptic pathways. The overall effect of these actions is thought to reduce facilitation of spinal motor neurons.

2,1,3-Benzothiadiazole substituted at C-4 by a Delta(1)-imidazolin-2-ylamino group and at C-4 by a chloro group.  It is an agonist at alpha2-adrenergic receptor sites.


Hallucinations

Perceptions in a conscious and awake state in the absence of external stimuli which have qualities of real perception, in that they are vivid, substantial, and located in external objective space.


Tridihexethyl

synonym Pathilon refers to chloride; RN given refers to parent cpd; structure


autonomic nervous system disorder

A disease involving the autonomic nervous system.


Trimethoprim

A pyrimidine inhibitor of dihydrofolate reductase, it is an antibacterial related to PYRIMETHAMINE. It is potentiated by SULFONAMIDES and the TRIMETHOPRIM, SULFAMETHOXAZOLE DRUG COMBINATION is the form most often used. It is sometimes used alone as an antimalarial. TRIMETHOPRIM RESISTANCE has been reported.

An aminopyrimidine antibiotic whose structure consists of pyrimidine 2,4-diamine and 1,2,3-trimethoxybenzene moieties linked by a methylene bridge.


Desoximetasone

A topical anti-inflammatory glucocorticoid used in DERMATOSES, skin allergies, PSORIASIS, etc.

Dexamethasone in which the hydroxy group at the 17alpha position is substituted by hydrogen. A synthetic corticosteroid with glucocorticoid activity, it is used as an anti-inflammatory and anti-pruritic in the treatment of various skin disorders, including skin allergies and psoriasis.


Dexfenfluramine

The S-isomer of FENFLURAMINE. It is a serotonin agonist and is used as an anorectic. Unlike fenfluramine, it does not possess any catecholamine agonist activity.

The S-enantiomer of fenfluramine. It stimulates the release of serotonin and selectively inhibits its reuptake, but unlike fenfluramine it does not possess catecholamine agonist activity. It was formerly given by mouth as the hydrochloride in the treatment of obesity, but, like fenfluramine, was withdrawn wolrdwide following reports of valvular heart defects.


Diclofenac

A non-steroidal anti-inflammatory agent (NSAID) with antipyretic and analgesic actions. It is primarily available as the sodium salt.

A monocarboxylic acid consisting of phenylacetic acid having a (2,6-dichlorophenyl)amino group at the 2-position.


Diazoxide

A benzothiadiazine derivative that is a peripheral vasodilator used for hypertensive emergencies. It lacks diuretic effect, apparently because it lacks a sulfonamide group.

A benzothiadiazine that is the S,S-dioxide of 2H-1,2,4-benzothiadiazine which is substituted at position 3 by a methyl group and at position 7 by chlorine. A peripheral vasodilator, it increases the concentration of glucose in the plasma and inhibits the secretion of insulin by the beta- cells of the pancreas. It is used orally in the management of intractable hypoglycaemia and intravenously in the management of hypertensive emergencies.


hyperinsulinism

Abnormally high levels of insulin in the blood.


Potassium phosphate

used in dental materials and to treat hypophosphatemia; RN given refers to cpd with unspecified MF

An inorganic potassium salt that is the tripotassium salt of phosphoric acid.


Ferrous Sulfate

Ferro-Gradumet is ferrous sulfate in controlled release form; RN given refers to Fe(+2)[1:1] salt

A compound of iron and sulfate in which the ratio of iron(2+) to sulfate ions is 1:1. Various hydrates occur naturally - most commonly the heptahydrate, which loses water to form the tetrahydrate at 57degreeC and the monohydrate at 65degreeC.


Levomefolic acid

an ingredient in Contraceptives, Oral, Combined

A 5-methyltetrahydrofolic acid that has 6S-configuration.


4-Hydroxybutanoic acid

The sodium salt of 4-hydroxybutyric acid. It is used for both induction and maintenance of ANESTHESIA.

A 4-hydroxy monocarboxylic acid that is butyric acid in which one of the hydrogens at position 4 is replaced by a hydroxy group.


Breast mass

A breast lump is any discrete mass in a breast noticed by the patient, significant other, or physician.


metabolic acidosis

Increased acidity in the blood secondary to acid base imbalance. Causes include diabetes, kidney failure and shock.


pancreatic adenocarcinoma

A carcinoma that arises from glandular epithelial cells of the pancreas


mitral valve stenosis

Narrowing of the left atrioventricular mitral orifice.


Aliskiren

Renin is secreted by the kidney in response to decreases in blood volume and renal perfusion. Renin cleaves angiotensinogen to form the inactive decapeptide angiotensin I (Ang I). Ang I is converted to the active octapeptide angiotensin II (Ang II) by ACE and non-ACE pathways. Ang II is a powerful vasoconstrictor and leads to the release of catecholamines from the adrenal medulla and prejunctional nerve endings. It also promotes aldosterone secretion and sodium reabsorption. Together, these effects increase blood pressure. Ang II also inhibits renin release, thus providing a negative feedback to the system. This cycle, from renin through angiotensin to aldosterone and its associated negative feedback loop, is known as the renin-angiotensin-aldosterone system (RAAS). Aliskiren is a direct renin inhibitor, decreasing plasma renin activity (PRA) and inhibiting the conversion of angiotensinogen to Ang I. Whether aliskiren affects other RAAS components, e.g., ACE or non-ACE pathways, is not known.

A monomethoxybenzene compound having a 3-methoxypropoxy group at the 2-position and a multi-substituted branched alkyl substituent at the 4-position.


Alfuzosin

Alfuzosin is a selective antagonist of post-synaptic alpha1-adrenoreceptors, which are located in the prostate, bladder base, bladder neck, prostatic capsule, and prostatic urethra.


Hematuria

The presence of blood in the urine. Hematuria may be gross hematuria (visible to the naked eye) or microscopic hematuria (detected by dipstick or microscopic examination of the urine).


Invasive pulmonary aspergillosis

Infection of the lungs with aspergillus. In the respiratory mucosa, the spores may germinate into hyphae, which in turn can invade the mucosa leading to invasive pulmonary aspergillosis.


Atracurium

A non-depolarizing neuromuscular blocking agent with short duration of action. Its lack of significant cardiovascular effects and its lack of dependence on good kidney function for elimination provide clinical advantage over alternate non-depolarizing neuromuscular blocking agents.

A diester compound consisting of pentane-1,5-diol with both hydroxyls bearing 3-[1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-3,4-dihydroisoquinolinium-2(1H)-yl]propanoyl groups.


Anagrelide

imidazoquinazoline derivative which lowers platelet count probably by inhibiting thrombopoiesis and reduces platelet aggregation; used for thrombocythemia

A 1,5-dihydroimidazo[2,1-]quinazoline having an oxo substituent at the 2-position and chloro substituents at the 6- and 7-positions.


Astemizole

Antihistamine drug now withdrawn from the market in many countries because of rare but potentially fatal side effects.

A piperidine compound having a 2-(4-methoxyphenyl)ethyl group at the 1-position and an N-[(4-fluorobenzyl)benzimidazol-2-yl]amino group at the 4-position.


Antazoline

An ethylenediamine derivative with histamine H1 antagonistic and sedative properties. Antazoline antagonizes histamine H1 receptor and prevents the typical allergic symptoms caused by histamine activities on capillaries, skin, mucous membranes, and gastrointestinal and bronchial smooth muscles. These histamine activities include vasodilation, bronchoconstriction, increased vascular permeability, pain, itching, and spasmodic contractions of gastrointestinal smooth muscles. Antazoline is used to provide symptomatic relieve of allergic symptoms.

A member of the class of imidazolines that is 2-aminomethyl-2-imidazoline in which the exocyclic amino hydrogens are replaced by benzyl and phenyl groups. Antazoline is only found in individuals that have taken the drug.


Azathioprine

Azathioprine is an inactive pro-drug of 6-mercaptopurine (6-MP), which acts as a purine antagonist but requires cellular uptake and intracellular anabolism to thioguanine nucleotides (TGNs) for  immunosuppression. TGNs and other metabolites (e.g. 6-methylmercaptopurine ribonucleotides) inhibit de novo purine synthesis and purine nucleotide interconversions. The TGNs are also incorporated into nucleic acids and this contributes to the immunosuppressive effects of the medicinal product. Other potential mechanisms of azathioprine include the inhibition of many pathways in nucleic acid biosynthesis, hence preventing proliferation and activity of cells involved in the immune response (B and T lymphocytes). Because of these mechanisms, the therapeutic effect of azathioprine may be evident only after several weeks or months of treatment. Unlike 6-MP, the activity of the azathioprine metabolite 1-methyl-4-nitro-5-thioimidazole has not been clearly determined. However, compared with 6-MP it appears to modify the activity of azathioprine in several systems. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), this substance has been listed as a known carcinogen. (Merck Index, 11th ed)

A thiopurine that is 6-mercaptopurine in which the mercapto hydrogen is replaced by a 1-methyl-4-nitroimidazol-5-yl group. It is a prodrug for mercaptopurine and is used as an immunosuppressant, prescribed for the treatment of inflammatory conditions and after organ transplantation and also for treatment of Crohn's didease and MS.


Bepridil

A long-acting calcium-blocking agent with significant anti-anginal activity. The drug produces significant coronary vasodilation and modest peripheral effects. It has antihypertensive and selective anti-arrhythmia activities and acts as a calmodulin antagonist.

A tertiary amine in which the substituents on nitrogen are benzyl, phenyl and 3-(2-methylpropoxy)-2-(pyrrolidin-1-yl)propyl.


eye disorder

A non-neoplastic or neoplastic disorder that affects the eye. Representative examples include conjunctivitis, glaucoma, cataract, conjunctival squamous cell carcinoma, uveal melanoma, and retinoblastoma.


Bretylium

An agent that blocks the release of adrenergic transmitters and may have other actions. It was formerly used as an antihypertensive agent, but is now proposed as an anti-arrhythmic.

A quaternary ammonium cation having 2-bromobenzyl, ethyl and two methyl groups attached to the nitrogen. It blocks noradrenaline release from the peripheral sympathetic nervous system, and is used in emergency medicine, cardiology, and other specialties for the acute management of ventricular tachycardia and ventricular fibrillation.


Bisacodyl

A diphenylmethane stimulant laxative used for the treatment of CONSTIPATION and for bowel evacuation. (From Martindale, The Extra Pharmacopoeia, 30th ed, p871)


Bethanechol

A slowly hydrolyzing muscarinic agonist with no nicotinic effects. Bethanechol is generally used to increase smooth muscle tone, as in the GI tract following abdominal surgery or in urinary retention in the absence of obstruction. It may cause hypotension, HEART RATE changes, and BRONCHIAL SPASM.

The carbamic acid ester of 2-methylcholine. A slowly hydrolysed muscarinic agonist with no nicotinic effects, it is used as its chloride salt to increase smooth muscle tone, as in the gastrointestinal tract following abdominal surgery, treatment of gastro-oesophageal reflux disease, and as an alternative to catheterisation in the treatment of non-obstructive urinary retention.


peritonitis

Inflammation of the peritoneum due to infection by bacteria or fungi. Causes include liver disease, perforation of the gastrointestinal tract or biliary tract, and peritoneal dialysis. Patients usually present with abdominal pain and tenderness, fever, chills, and nausea and vomiting. It is an emergency medical condition that requires prompt medical attention and treatment.


nephrotic syndrome

A collection of symptoms that include severe edema, proteinuria, and hypoalbuminemia; it is indicative of renal dysfunction.


cerebral malaria

A sequestration of Plasmodium falciparum in the brain, which can cause coma and/or seizures.


morbid obesity

An excess of body weight, normally defined as an individual with a body mass index greater than 35 or a body weight greater than one hundred percent of ideal body weight.


drug dependence

Drug dependence - replaced the term "drug addiction" and is defined as a state, psychic and sometimes also physical, resulting from the interaction between a living organism and a drug, characterized by behavioral and other responses that always include a compulsion to take the drug on a continuous or periodic basis in order to experience its psychic effects, and sometimes to avoid the discomfort of its absence. Tolerance may or may not be present. A person may be dependent on more than one drug.


Tension-type headache

A type of headache that last hours with continuous pain of mild or moderate intensity, bilateral location, a pressing/tightening (non-pulsating) quality and that is not aggravated by routine physical activity such as walking or climbing stairs.


peripheral ischemia

Deficient blood distribution to the limbs caused by narrowing or obstruction of the lumen of the peripheral arteries.


Butorphanol

Butorphanol is a mixed agonist-antagonist with low intrinsic activity at receptors of the mu-opioid type (morphine-like). It is also an agonist at k-opioid receptors. Its interactions with these receptors in the central nervous system apparently mediate most of its pharmacologic effects, including analgesia.

Levorphanol in which a hydrogen at position 14 of the morphinan skeleton is substituted by hydroxy and one of the hydrogens of the N-methyl group is substituted by cyclopropyl. A semi-synthetic opioid agonist-antagonist analgesic, it is used as its (S,S)-tartaric acid salt for relief or moderate to severe pain.


Levocarnitine

A constituent of STRIATED MUSCLE and LIVER. It is an amino acid derivative and an essential cofactor for fatty acid metabolism.

The (R)-enantiomer of carnitine.


Carvedilol

A carbazole and propanol derivative that acts as a non-cardioselective beta blocker and vasodilator. It has blocking activity for ALPHA 1 ADRENERGIC RECEPTORS and, at higher doses, may function as a blocker of CALCIUM CHANNELS; it also has antioxidant properties. Carvedilol is used in the treatment of HYPERTENSION; ANGINA PECTORIS; and HEART FAILURE. It can also reduce the risk of death following MYOCARDIAL INFARCTION.

A member of the class of carbazoles that is an adrenergic antagonist with non-selective beta- and alpha-1 receptor blocking properties which helps in the management of congestive heart failure.


streptococcal meningitis

An infectious meningitis caused by infection with Streptococcus.


Cefonicid

A second-generation cephalosporin administered intravenously or intramuscularly. Its bactericidal action results from inhibition of cell wall synthesis. It is used for urinary tract infections, lower respiratory tract infections, and soft tissue and bone infections.

A cephalosporin bearing {[1-(sulfomethyl)-1H-tetrazol-5-yl]sulfanyl}methyl and (R)-2-hydroxy-2-phenylacetamido groups at positions 3 and 7, respectively, of the cephem skeleton.


Recurrent lower respiratory tract infections

An increased susceptibility to lower respiratory tract infections as manifested by a history of recurrent lower respiratory tract infections.


CEFOTETAN

A semisynthetic cephamycin antibiotic that is administered intravenously or intramuscularly. The drug is highly resistant to a broad spectrum of beta-lactamases and is active against a wide range of both aerobic and anaerobic gram-positive and gram-negative microorganisms.

A semi-synthetic second-generation cephamycin antibiotic with [(1-methyl-1H-tetrazol-5-yl)sulfanyl]methyl, methoxy and  {[4-(2-amino-1-carboxy-2-oxoethylidene)-1,3-dithietan-2-yl]carbonyl}amino groups at the 3, 7alpha, and 7beta positions, respectively, of the cephem skeleton. It is resistant to a wide range of beta-lactamases and is active against a broad spectrum of aerobic and anaerobic Gram-positive and Gram-negative microorganisms.


Cephalexin

A semisynthetic cephalosporin antibiotic with antimicrobial activity similar to that of CEPHALORIDINE or CEPHALOTHIN, but somewhat less potent. It is effective against both gram-positive and gram-negative organisms.

A semisynthetic first-generation cephalosporin antibiotic having methyl and beta-(2R)-2-amino-2-phenylacetamido groups at the 3- and 7- of the cephem skeleton, respectively. It is effective against both Gram-negative and Gram-positive organisms, and is used for treatment of infections of the skin, respiratory tract and urinary tract.


Chlorphentermine

A sympathomimetic agent that was formerly used as an anorectic. It has properties similar to those of DEXTROAMPHETAMINE. It has been implicated in lipid storage disorders and pulmonary hypertension. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1223)


Chlorzoxazone

A centrally acting central muscle relaxant with sedative properties. It is claimed to inhibit muscle spasm by exerting an effect primarily at the level of the spinal cord and subcortical areas of the brain. (From Martindale, The Extra Pharmacopoea, 30th ed, p1202)

A member of the class of  1,3-benzoxazoles that is 1,3-benzoxazol-2-ol in which the hydrogen atom at position 5 is substituted by chlorine. A centrally acting muscle relaxant with sedative properties, it is used for the symptomatic treatment of painful muscle spasm.


Citric Acid

A key intermediate in metabolism. It is an acid compound found in citrus fruits. The salts of citric acid (citrates) can be used as anticoagulants due to their calcium chelating ability.

A tricarboxylic acid that is propane-1,2,3-tricarboxylic acid bearing a hydroxy substituent at position 2. It is an important metabolite in the pathway of all aerobic organisms.


Diamond-Blackfan anemia

A congenital aregenerative and often macrocytic anemia with erythroblastopenia.


bursitis

Inflammation or irritation of a synovial bursa, the fibrous sac that acts as a cushion between moving structures of bones, muscles, tendons or skin.


Conivaptan

The amide resulting from the formal condensation of 4-[(biphenyl-2-ylcarbonyl)amino]benzoic acid with the benzazepine nitrogen of 2-methyl-1,4,5,6-tetrahydroimidazo[4,5-d][1]benzazepine. It is an antagonist for two of the three types of arginine vasopressin (AVP) receptors, V1a and V2. It is used as its hydrochloride salt for the treatment of hyponatraemia (low blood sodium levels) caused by syndrome of inappropriate antidiuretic hormone (SIADH).


Demyelination

Breakdown, or abnormal development, of a nerve fiber myelin sheath.


rheumatic fever

A post-bacterial multisystem inflammatory disease occurring as a post-infectious, nonsuppurative sequela of untreated streptococcus pyogenes (Group A streptococcus [GAS]) pharyngitis, and mainly occurs in individuals aged 5 to 15 years. The most common presenting signs are fever, migratory polyarthritis and carditis.


Cyclobenzaprine

structurally related to tricyclic antidepressants relieves skeletal muscle spasm of local origin without interfering with muscle function, it is ineffective in muscle spasm due to central nervous system disease

5-Methylidene-5H-dibenzo[a,d]cycloheptene in which one of the hydrogens of the methylidene group is substituted by a 2-(dimethylamino)ethyl group. A centrally acting skeletal muscle relaxant, it is used as its hydrochloride salt in the symptomatic treatment of painful muscle spasm.


Cyclopentolate

A parasympatholytic anticholinergic used solely to obtain mydriasis or cycloplegia.

A carboxylic ester resulting from the formal condensation of (1-hydroxycyclopentyl)(phenyl)acetic acid with N,N-dimethylethanolamine. A tertiary amine antimuscarinic with actions similar to atropine, it is used as its hydrochloride salt to produce mydriasis (excessive dilation of the pupil) and cycloplegia (paralysis  of the ciliary muscle of the eye) for opthalmic diagnostic procedures. It acts more quickly than atropine and has a shorter duration of action.


Exenatide

A synthetic form of exendin-4, a 39-amino acid peptide isolated from the venom of the Gila monster lizard (Heloderma suspectum). Exenatide increases CYCLIC AMP levels in pancreatic acinar cells and acts as a GLUCAGON-LIKE PEPTIDE-1 RECEPTOR (GLP-1) agonist and incretin mimetic, enhancing insulin secretion in response to increased glucose levels; it also suppresses inappropriate glucagon secretion and slows gastric emptying. It is used an anti-diabetic and anti-obesity agent.


gastroparesis

Paralysis of the muscles of the stomach wall resulting in delayed emptying of the gastric contents into the small intestine.


sleep apnea syndrome

A disorder characterized by multiple cessations of respirations during sleep that induce partial arousals and interfere with the maintenance of sleep.


keratoconjunctivitis

Inflammation of both the cornea and the conjunctiva.


Galantamine

A benzazepine derived from norbelladine. It is found in GALANTHUS and other AMARYLLIDACEAE. It is a cholinesterase inhibitor that has been used to reverse the muscular effects of GALLAMINE TRIETHIODIDE and TUBOCURARINE and has been studied as a treatment for ALZHEIMER DISEASE and other central nervous system disorders.

A benzazepine alkaloid isolated from certain species of daffodils.


Cyclitis

Inflammation of the ciliary body.


Fexofenadine

a second generation antihistamine;  metabolite of the antihistaminic drug terfenadine; ; RN refers to HCl

A piperidine-based anti-histamine compound.


Fludrocortisone acetate

A synthetic mineralocorticoid with anti-inflammatory activity.

An acetate ester resulting from the formal condensation of the primary hydroxy group of fludrocortisone with acetic acid. A synthetic corticosteroid, it has glucocorticoid actions about 10 times as potent as hydrocortisone, while its mineralocorticoid actions are over 100 times as potent. It is used in partial replacement therapy for primary and secondary adrenocortical insufficiency in Addison's disease and for the treatment of salt-losing adrenal hyperplasia.


Gefitinib

Gefitinib reversibly inhibits the kinase activity of wild-type and certain activating mutations of EGFR, preventing autophosphorylation of tyrosine residues associated with the receptor, thereby inhibiting further downstream signalling and blocking EGFR-dependent proliferation.

A member of the class of quinazolines that is quinazoline which is substituted by a (3-chloro-4-fluorophenyl)nitrilo group, 3-(morpholin-4-yl)propoxy group and a methoxy group at positions 4,6 and 7, respectively. An EGFR kinase inhibitor used for the treatment of non-small cell lung cancer.


Haloperidol

A phenyl-piperidinyl-butyrophenone that is used primarily to treat SCHIZOPHRENIA and other PSYCHOSES. It is also used in schizoaffective disorder, DELUSIONAL DISORDERS, ballism, and TOURETTE SYNDROME (a drug of choice) and occasionally as adjunctive therapy in INTELLECTUAL DISABILITY and the chorea of HUNTINGTON DISEASE. It is a potent antiemetic and is used in the treatment of intractable HICCUPS. (From AMA Drug Evaluations Annual, 1994, p279)

A compound composed of a central piperidine structure with hydroxy and p-chlorophenyl substituents at position 4 and an N-linked p-fluorobutyrophenone moiety.


Tourette syndrome

A neurologic disorder caused by defective metabolism of the neurotransmitters in the brain. It is characterized by repeated involuntary movements (motor tics) and uncontrollable vocal sounds (vocal tics). The symptoms are usually manifested before the age of eighteen.


Mefenamic Acid

A non-steroidal anti-inflammatory agent with analgesic, anti-inflammatory, and antipyretic properties. It is an inhibitor of cyclooxygenase.

An aminobenzoic acid that is anthranilic acid in which one of the hydrogens attached to the nitrogen is replaced by a 2,3-dimethylphenyl group. Although classed as a non-steroidal anti-inflammatory drug, its anti-inflammatory properties are considered to be minor. It is used to relieve mild to moderate pain, including headaches, dental pain, osteoarthritis and rheumatoid arthritis.


Melphalan

An alkylating nitrogen mustard that is used as an antineoplastic in the form of the levo isomer - MELPHALAN, the racemic mixture - MERPHALAN, and the dextro isomer - MEDPHALAN; toxic to bone marrow, but little vesicant action; potential carcinogen.

A phenylalanine derivative comprising L-phenylalanine having [bis(2-chloroethyl)amino group at the 4-position on the phenyl ring.


Megestrol acetate

Megestrol acetate is a progestogen with actions and uses similar to those of the progestogens in general. It also has anti-androgenic properties. It is given by mouth in the palliative treatment or as an adjunct to other therapy in endometrial carcinoma and in breast cancer. Megestrol acetate has been approved to treat anorexia and cachexia. (From Reynolds JEF(Ed): Martindale: The Extra Pharmacopoeia (electronic version). Micromedex, Inc, Englewood, CO, 1995)

A steroid ester resulting from the formal condensation of the hydroxy group of megestrol with the carboxy group of acetic acid. It is an appetite stimulant used for the treatment of anorexia and cachexia. Also used for birth control and for the treatment of breast cancer.


Methdilazine

A phenothiazine substituted on nitrogen by a (1-methylpyrrolidin-3-yl)methyl group; a first-generation antihistamine with anticholinergic properties.


Methazolamide

A carbonic anhydrase inhibitor that is used as a diuretic and in the treatment of glaucoma.


renal tubular acidosis

A group of genetic disorders of the kidney tubules characterized by the accumulation of metabolically produced acids with elevated plasma chloride, hyperchloremic metabolic acidosis. Defective renal acidification of urine (proximal tubules) or low renal acid excretion (distal tubules) can lead to complications such as hypokalemia, hypercalcinuria with nephrolithiasis and nephrocalcinosis, and rickets.


leprosy

Leprosy is a chronic infectious disease affecting primarily the skin and peripheral nervous system.


Midodrine

An ethanolamine derivative that is an adrenergic alpha-1 agonist. It is used as a vasoconstrictor agent in the treatment of HYPOTENSION.

An aromatic ether that is 1,4-dimethoxybenzene which is substituted at position 2 by a 2-(glycylamino)-1-hydroxyethyl group. A direct-acting sympathomimetic with selective alpha-adrenergic agonist activity, it is used (generally as its hydrochloride salt) as a peripheral vasoconstrictor in the treatment of certain hypotensive states. The main active moiety is its major metabolite, deglymidodrine.


Miconazole

An imidazole antifungal agent that is used topically and by intravenous infusion.

A racemate composed of equimolar amounts of (R)- and (S)-miconazole. Used (as its nitrate salt) to treat skin infections such as athlete's foot, jock itch, ringworm and other fungal skin infections. It inhibits the synthesis of ergosterol, a critical component of fungal cell membranes.


Diaper Rash

An inflammatory skin condition in the diaper area that may be caused by irritation or infection.


Mifepristone

A progestational and glucocorticoid hormone antagonist. Its inhibition of progesterone induces bleeding during the luteal phase and in early pregnancy by releasing endogenous prostaglandins from the endometrium or decidua. As a glucocorticoid receptor antagonist, the drug has been used to treat hypercortisolism in patients with nonpituitary CUSHING SYNDROME.


variegate porphyria

Variegate porphyria is a form of acute hepatic porphyria characterized by the occurrence of neuro-visceral attacks with or without the presence of cutaneous lesions.


twin reversal arterial perfusion syndrome


INOSITOL

An isomer of glucose that has traditionally been considered to be a B vitamin although it has an uncertain status as a vitamin and a deficiency syndrome has not been identified in man. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1379) Inositol phospholipids are important in signal transduction.

An inositol having myo- configuration.


coccidioidomycosis

A fungal infection caused by Coccidioides immitis. Affected individuals usually have mild flu-like symptoms. However, pneumonia and systemic involvement with the formation of abscesses may develop as complications of the disease.


Iopodic acid

Ionic monomeric contrast media. Usually the sodium or calcium salts are used for examination of the gall bladder and biliary tract. (From Martindale, The Extra Pharmacopoeia, 30th ed, p704)


Leukemia, Myeloid, Chronic-Phase

A phase of chronic myelogenous leukemia in which the peripheral blood smear shows leukocytosis due mainly to neutrophils in different stages of maturation.  Blasts usually account for less than 2% of the white blood cells counts.  The platelet count is normal or increased.  Thrombocytopenia is very uncommon during the chronic phase.  Most patients have mild anemia.  The bone marrow biopsy is hypercellular due to increased numbers of neutrophils and their precursors.  Blasts usually account for fewer than 5% of the marrow cells, and more than 10% indicates transformation to the accelerated phase.  Megakaryocytes are smaller than normal and have hypolobated nuclei.  The spleen is enlarged due to infiltration of the cords of the red pulp by granulocytes.  Most patients with chronic myelogenous leukemia are diagnosed in the chronic phase, which usually has an insidious onset and may last from several months to several years. (WHO, 2001)


butyrylcholinesterase deficiency

Butyrylcholinesterase (BChE) deficiency is a metabolic disorder characterised by prolonged apnoea after the use of certain anaesthetic drugs, including the muscle relaxants succinylcholine or mivacurium and other ester local anaesthetics. The duration of the prolonged apnoea varies significantly depending on the extent of the enzyme deficiency.


Levetiracetam

The precise mechanism(s) by which levetiracetam exerts its antiepileptic effect is unknown. The antiepileptic activity of levetiracetam was assessed in a number of animal models of epileptic seizures. Levetiracetam did not inhibit single seizures induced by maximal stimulation with electrical current or different chemoconvulsants and showed only minimal activity in submaximal stimulation and in threshold tests. Protection was observed, however, against secondarily generalized activity from focal seizures induced by pilocarpine and kainic acid, two chemoconvulsants that induce seizures that mimic some features of human complex partial seizures with secondary generalization. Levetiracetam also displayed inhibitory properties in the kindling model in rats, another model of human complex partial seizures, both during kindling development and in the fully kindled state. In vitro and in vivo recordings of epileptiform activity from the hippocampus have shown that levetiracetam inhibits burst firing without affecting normal neuronal excitability, suggesting that levetiracetam may selectively prevent hypersynchronization of epileptiform burst firing and propagation of seizure activity. Levetiracetam at concentrations of up to 10 uM did not demonstrate binding affinity for a variety of known receptors, such as those associated with benzodiazepines, GABA (gamma-aminobutyric acid), glycine, NMDA (N-methyl-D-aspartate), re-uptake sites, and second messenger systems. Furthermore, in vitro studies have failed to find an effect of levetiracetam on neuronal voltage-gated sodium or T-type calcium currents and levetiracetam does not appear to directly facilitate GABAergic neurotransmission. However, in vitro studies have demonstrated that levetiracetam opposes the activity of negative modulators of GABA- and glycine-gated currents and partially inhibits N-type calcium currents in neuronal cells. A saturable and stereoselective neuronal binding site in rat brain tissue has been described for levetiracetam. Experimental data indicate that this binding site is the synaptic vesicle protein SV2A, thought to be involved in the regulation of vesicle exocytosis. Although the molecular significance of levetiracetam binding to synaptic vesicle protein SV2A is not understood, levetiracetam and related analogs showed a rank order of affinity for SV2A which correlated with the potency of their antiseizure activity in audiogenic seizure-prone mice. These findings suggest that the interaction of levetiracetam with the SV2A protein may contribute to the antiepileptic mechanism of action of the drug.

A pyrrolidinone and carboxamide that is N-methylpyrrolidin-2-one in which one of the methyl hydrogens is replaced by an aminocarbonyl group, while another is replaced by an ethyl group (the S enantiomer). An anticonvulsant, it is used for the treatment of epilepsy in both human and veterinary medicine.


Dihydroergotamine

A 9,10alpha-dihydro derivative of ERGOTAMINE. It is used as a vasoconstrictor, specifically for the therapy of MIGRAINE DISORDERS.

Ergotamine in which a single bond replaces the double bond between positions 9 and 10. A semisynthetic ergot alkaloid with weaker oxytocic and vasoconstrictor properties than ergotamine, it is used (as the methanesulfonic or tartaric acid salts) for the treatment of migraine and orthostatic hypotension.


Dimenhydrinate

A drug combination that contains diphenhydramine and theophylline. It is used for treating VERTIGO, MOTION SICKNESS, and NAUSEA associated with PREGNANCY.


Peripheral edema

An abnormal accumulation of interstitial fluid in the soft tissues of the limbs.


scrub typhus

Scrub typhus is a rare dust mite-borne infectious disease caused by the Orientia tsutsugamushi bacterium and characterized clinically by an eruptive fever which is potentially serious.


Doxazosin

A prazosin-related compound that is a selective alpha-1-adrenergic blocker.

A member of the class of  quinazolines that is quinazoline substituted by an amino group at position 4, methoxy groups at positions 6 and 7 and a piperazin-1-yl group at position 2 which in turn is substituted by a 2,3-dihydro-1,4-benzodioxin-2-ylcarbonyl group at position 4. An  antihypertensive agent, it is used in the treatment of high blood pressure.


Doxorubicin

Antineoplastic antibiotic obtained from Streptomyces peucetius. It is a hydroxy derivative of DAUNORUBICIN.


pancreatic neuroendocrine neoplasm

A neoplasm with neuroendocrine differentiation that arises from the pancreas. It includes neuroendocrine tumors (low and intermediate grade) and neuroendocrine carcinomas (high grade).


Dyphylline

A THEOPHYLLINE derivative with broncho- and vasodilator properties. It is used in the treatment of asthma, cardiac dyspnea, and bronchitis.

An oxopurine that is theophylline bearing a 2,3-dihydroxypropyl group at the 7 position. It has broncho- and vasodilator properties, and is used in the treatment of asthma, cardiac dyspnea, and bronchitis. It is also an ingredient in preparations that have been promoted for coughs.


Entacapone

Entacapone is a selective and reversible inhibitor of COMT. COMT catalyzes the transfer of the methyl group of S-adenosyl-L-methionine to the phenolic group of substrates that contain a catechol structure. Physiological substrates of COMT include dopa, catecholamines (dopamine, norepinephrine, and epinephrine) and their hydroxylated metabolites. The function of COMT is the elimination of biologically active catechols and some other hydroxylated metabolites. When entacapone is given in conjunction with levodopa and an aromatic amino acid decarboxylase inhibitor, such as carbidopa, plasma levels of levodopa are greater and more sustained than after administration of levodopa and an aromatic amino acid decarboxylase inhibitor alone. It is believed that at a given frequency of levodopa administration, these more sustained plasma levels of levodopa result in more constant dopaminergic stimulation in the brain, leading to greater effects on the signs and symptoms of Parkinson's disease.

A monocarboxylic acid amide that is N,N-diethylprop-2-enamide in which the hydrogen at position 2 is substituted by a cyano group and the hydrogen at the 3E position is substituted by a 3,4-dihydroxy-5-nitrophenyl group.


Dutasteride

A 5-ALPHA-REDUCTASE INHIBITOR that is reported to inhibit both type-1 and type2 isoforms of the enzyme and is used to treat BENIGN PROSTATIC HYPERPLASIA.

An aza-steroid that is inasteride in which the tert-butyl group is replaced by a 2,5-bis(trifluoromethyl)phenyl group. A synthetic 4-azasteroid, dutasteride is a selective inhibitor of both the type 1 and type 2 isoforms of steroid 5alpha-reductase, an intracellular enzyme that converts testosterone to 5alpha-dihydrotestosterone. Dutasteride is used for the treatment of symptomatic benign prostatic hyperplasia in men with an enlarged prostate gland.


Cataract surgery

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Vigabatrin

The precise mechanism of vigabatrin's anti-seizure effect is unknown, but it is believed to be the result of its action as an irreversible inhibitor of gamma-aminobutyric acid transaminase (GABA-T), the enzyme responsible for the metabolism of the inhibitory neurotransmitter GABA. This action results in increased levels of GABA in the central nervous system.

A gamma-amino acid having a gamma-vinyl GABA structure. It is an irreversible inhibitor of gamma-aminobutyric 664 acid transaminase


Corneal erosion

An erosion or abrasion of the cornea's outermost layer of epithelial cells.


Tyramine

An indirect sympathomimetic that occurs naturally in cheese and other foods. Tyramine does not directly activate adrenergic receptors, but it can serve as a substrate for adrenergic uptake systems and  MONOAMINE OXIDASE to prolong the actions of adrenergic transmitters. It also provokes transmitter release from adrenergic terminals and may be a neurotransmitter in some invertebrate nervous systems.

A primary amino compound obtained by formal decarboxylation of the amino acid tyrosine.


Articaine

A thiophene-containing local anesthetic pharmacologically similar to MEPIVACAINE.


Metoclopramide

A dopamine D2 antagonist that is used as an antiemetic.

A member of the class of  benzamides resulting from the formal condensation of 4-amino-5-chloro-2-methoxybenzoic acid with the primary amino group of N,N-diethylethane-1,2-diamine.


Nedocromil

A pyranoquinolone derivative that inhibits activation of inflammatory cells which are associated with ASTHMA, including eosinophils, neutrophils, macrophages, mast cells, monocytes, and platelets.


Lesch-Nyhan syndrome

Lesch-Nyhan syndrome (LNS) is the most severe form of hypoxanthine-guanine phosphoribosyltransferase (HPRT) deficiency, a hereditary disorder of purine metabolism, and is associated with uric acid overproduction (UAO), neurological troubles, and behavioral problems.


dysentery

Acute inflammation of the intestine associated with infectious diarrhea of various etiologies, generally acquired by eating contaminated food containing toxins, biological derived from bacteria or other microorganisms. Dysentery is characterized initially by watery feces then by bloody mucoid stools. It is often associated with abdominal pain; fever; and dehydration.


glomerulonephritis

A renal disorder characterized by damage in the glomeruli. It may be acute or chronic, focal or diffuse, and it may lead to renal failure. Causes include autoimmune disorders, infections, diabetes, and malignancies.


Oxazepam

A benzodiazepine used in the treatment of anxiety, alcohol withdrawal, and insomnia.

A 1,4-benzodiazepinone that is 1,3-dihydro-2H-1,4-benzodiazepin-2-one substituted by a chloro group at position 7, a hydroxy group at position 3 and phenyl group at position 5.


Phendimetrazine

minor descriptor (66-86); file maintained to MORPHOLINES (66-86); on-line & INDEX MEDICUS search MORPHOLINES (66-86); RN given refers to parent cpd without isomeric designation


Hyperactivity

Hyperactivity is a state of constantly being unusually or abnormally active, including in situations in which it is not appropriate.


Toxic nephropathy

Toxicity that impairs or damages the kidney. This condition is often caused by the administration of a pharmaceutical agent that causes damage to the kidney.


Palonosetron

an antiemetic and antinauseant agent, it is a serotonin subtype 3 (5-HT3) receptor antagonist with a strong binding affinity for this receptor and little or no affinity for other receptors

An organic heterotricyclic compound that is an antiemetic used (as its hydrochloride salt) in combination with netupitant (under the trade name Akynzeo) to treat nausea and vomiting in patients undergoing cancer chemotherapy.


Pamidronic acid

An aminobisphosphonate that inhibits BONE RESORPTION and is used for the treatment of osteolytic lesions, bone pain, and severe HYPERCALCEMIA associated with malignancies.


Phenmetrazine

A sympathomimetic drug used primarily as an appetite depressant. Its actions and mechanisms are similar to DEXTROAMPHETAMINE.

A member of the class of morpholines that is morpholine substituted with a phenyl group at position 2 and a methyl group at position 3.


Phenylalanine

An essential aromatic amino acid that is a precursor of MELANIN; DOPAMINE; noradrenalin (NOREPINEPHRINE), and THYROXINE.

The L-enantiomer of phenylalanine.


Flu-Like Symptoms

Complaints describing a pattern similar to influenza, which may include one or more of the following symptoms: fever, chills, muscle or body aches, cough, sore throat, rhinitis, or fatigue.


Pimozide

A diphenylbutylpiperidine that is effective as an antipsychotic agent and as an alternative to HALOPERIDOL for the suppression of vocal and motor tics in patients with Tourette syndrome. Although the precise mechanism of action is unknown, blockade of postsynaptic dopamine receptors has been postulated. (From AMA Drug Evaluations Annual, 1994, p403)

A member of the class of benzimidazoles that is 1,3-dihydro-2H-benzimidazol-2-one in which one of the nitrogens is substituted by a piperidin-4-yl group, which in turn is substituted on the nitrogen by a 4,4-bis(p-fluorophenyl)butyl group.


staphylococcus aureus infection

An infectious process in which the bacteria Staphylococcus aureus is present.


polyarteritis nodosa

Polyarteritis nodosa (PAN) is a rare, clinically heterogeneous, rheumatologic disease characterized by necrotizing inflammatory lesions affecting small- and medium-sized blood vessels. PAN most commonly affects skin, joints, peripheral nerves, the gut, and the kidney.


High myopia

A severe form of myopia with greater than -6.00 diopters.


Reduced visual acuity

Diminished clarity of vision.


Epilepsy characterized by intractable complex partial seizures


Procarbazine

An antineoplastic agent used primarily in combination with mechlorethamine, vincristine, and prednisone (the MOPP protocol) in the treatment of Hodgkin's disease.

A benzamide obtained by formal condensation of the carboxy group of 4-[(2-methylhydrazino)methyl]benzoic acid with the amino group of isopropylamine. An antineoplastic chemotherapy drug used for treatment of Hodgkin's lymphoma. Metabolism yields azo-procarbazine and hydrogen peroxide, which results in the breaking of DNA strands.


Tachyarrhythmia

A disorder characterized by an arrhythmia with an above normal rate.


Rosuvastatin

A HYDROXYMETHYLGLUTARYL-COA-REDUCTASE INHIBITOR, or statin, that reduces the plasma concentrations of LDL-CHOLESTEROL; APOLIPOPROTEIN B, and TRIGLYCERIDES while increasing HDL-CHOLESTEROL levels in patients with HYPERCHOLESTEROLEMIA and those at risk for CARDIOVASCULAR DISEASES.

A dihydroxy monocarboxylic acid that is (6E)-7-{4-(4-fluorophenyl)-2-[methyl(methylsulfonyl)amino]-6-(propan-2-yl)pyrimidin-5-yl} hept-6-enoic acid carrying two hydroxy substituents at positions 3 and 5 (the 3R,5S-diastereomer).


Ropivacaine

An anilide used as a long-acting local anesthetic. It has a differential blocking effect on sensory and motor neurons.

A piperidinecarboxamide-based amide-type local anaesthetic (amide caine) in which (S)-N-propylpipecolic acid and 2,6-dimethylaniline are combined to form the amide bond.


Cyclopentylrifampicin

Rifapentine, a cyclopentyl rifamycin, inhibits DNA-dependent RNA polymerase in susceptible strains of Mycobacterium tuberculosis but does not affect mammalian cells at concentrations that are active against these bacteria. At therapeutic levels, rifapentine inhibits RNA transcription by preventing the initiation of RNA chain formation. It forms a stable complex with bacterial DNA-dependent RNA polymerase, leading to repression of RNA synthesis and cell death. Rifapentine and its 25-desacetyl metabolite accumulate in human monocyte-derived macrophages and are bactericidal to both intracellular and extracellular M. tuberculosis bacilli.


Quinestrol

The 3-cyclopentyl ether of ETHINYL ESTRADIOL. After gastrointestinal absorption, it is stored in ADIPOSE TISSUE, slowly released, and metabolized principally to the parent compound. It has been used in ESTROGEN REPLACEMENT THERAPY. (From AMA Drug Evaluations Annual, 1992, p1011)


Ramelteon

Ramelteon is a melatonin receptor agonist with both high affinity for melatonin MT1 and MT2 receptors and selectivity over the MT3 receptor. Ramelteon demonstrates full agonist activity in vitro in cells expressing human MT1 or MT2 receptors. The activity of ramelteon at the MT1 and MT2 receptors is believed to contribute to its sleep-promoting properties, as these receptors, acted upon by endogenous melatonin, are thought to be involved in the maintenance of the circadian rhythm underlying the normal sleep-wake cycle.


Quinethazone

A member of the class of quinazolines that is quinazolin-4-one substituted at positions 2, 6 and 7 by ethyl, sulfamoyl and chloro groups respectively; a thiazide-like diuretic used to treat hypertension.


Sulfathiazole

A sulfathiazole compound that is used as a short-acting anti-infective agent. It is no longer commonly used systemically due to its toxicity, but may still be applied topically in combination with other drugs for the treatment of vaginal and skin infections, and is still used in veterinary medicine.

A 1,3-thiazole compound having a 4-aminobenzenesulfonamido group at the 2-position.


Sorbitol

A polyhydric alcohol with about half the sweetness of sucrose. Sorbitol occurs naturally and is also produced synthetically from glucose. It was formerly used as a diuretic and may still be used as a laxative and in irrigating solutions for some surgical procedures. It is also used in many manufacturing processes, as a pharmaceutical aid, and in several research applications.

The D-enantiomer of glucitol (also known as D-sorbitol).


Tamoxifen

One of the SELECTIVE ESTROGEN RECEPTOR MODULATORS with tissue-specific activities. Tamoxifen acts as an anti-estrogen (inhibiting agent) in the mammary tissue, but as an estrogen (stimulating agent) in cholesterol metabolism, bone density, and cell proliferation in the ENDOMETRIUM.


anaplastic astrocytoma

Anaplastic astrocytoma is a rare, high-grade, malignant glial tumor, histologically characterized by abundance of pleomorphic astrocytes and multiple mitotic figures, often associated with diffuse infiltration of the surrounding tissue, considerable edema and mass effect and involvement of the contralateral brain. Depending on the primary localization of the tumor, patients can present with signs of raised intracranial pressure (headache, vomiting, papilledema), seizures, progressive neurological deficits, and/or behavioral changes. The tumor is most commonly localized in the frontal and temporal lobes, brain stem and spinal cord.


viral infectious disease

Any disease caused by a virus.


Topiramate

The precise mechanisms by which topiramate exerts its anticonvulsant and migraine prophylaxis effects are unknown; however, preclinical studies have revealed four properties that may contribute to topiramate's efficacy for epilepsy and migraine prophylaxis. Electrophysiological and biochemical evidence suggests that topiramate, at pharmacologically relevant concentrations, blocks voltage-dependent sodium channels, augments the activity of the neurotransmitter gamma-aminobutyrate at some subtypes of the GABA-A receptor, antagonizes the AMPA/kainate subtype of the glutamate receptor, and inhibits the carbonic anhydrase enzyme, particularly isozymes II and IV.

A hexose derivative that is 2,3:4,5-di-O-isopropylidene-beta-D-fructopyranose in which the hydroxy group has been converted to the corresponding sulfamate ester. It blocks voltage-dependent sodium channels and is used as an antiepileptic and for the prevention of migraine.


lung abscess

A bacterial, fungal or parasitic abscess that develops in the lung parenchyma. Causes include aspiration pneumonia, necrotizing pneumonia, necrotizing malignant tumors, and Wegener's granulomatosis.


Ticlopidine

An effective inhibitor of platelet aggregation commonly used in the placement of STENTS in CORONARY ARTERIES.

A thienopyridine that is 4,5,6,7-tetrahydrothieno[3,2-c]pyridine in which the hydrogen attached to the nitrogen is replaced by an o-chlorobenzyl group.


Thioridazine

A phenothiazine antipsychotic used in the management of PHYCOSES, including SCHIZOPHRENIA.

A phenothiazine derivative having a methylsulfanyl subsitituent at the 2-position and a (1-methylpiperidin-2-yl)ethyl] group at the N-10 position.


Levothyroxine

The major hormone derived from the thyroid gland. Thyroxine is synthesized via the iodination of tyrosines (MONOIODOTYROSINE) and the coupling of iodotyrosines (DIIODOTYROSINE) in the THYROGLOBULIN. Thyroxine is released from thyroglobulin by proteolysis and secreted into the blood. Thyroxine is peripherally deiodinated to form TRIIODOTHYRONINE which exerts a broad spectrum of stimulatory effects on cell metabolism.

The L-enantiomer of thyroxine.


myxedema

A condition characterized by severe hypothyroidism that is caused by autoimmune thyroid gland disorders, surgical reduction of thyroid tissue, radiation exposure, and viral infections. Signs and symptoms include generalized fatigue, lethargy, increased body weight, pale, edematous and thickened skin, low blood pressure, constipation and cold intolerance.


viral eye infection

Infections of the eye caused by minute intracellular agents. These infections may lead to severe inflammation in various parts of the eye - conjunctiva, iris, eyelids, etc. Several viruses have been identified as the causative agents. Among these are Herpesvirus, Adenovirus, Poxvirus, and Myxovirus.


Tolazamide

A sulphonylurea hypoglycemic agent with actions and uses similar to those of CHLORPROPAMIDE.

An N-sulfonylurea that is 1-tosylurea in which a hydrogen attached to the nitrogen at position 3 is replaced by an azepan-1-yl group. A hypoglycemic agent, it is used for the treatment of type 2 diabetes mellitus.


Tolazoline

A vasodilator that apparently has direct actions on blood vessels and also increases cardiac output. Tolazoline can interact to some degree with histamine, adrenergic, and cholinergic receptors, but the mechanisms of its therapeutic effects are not clear. It is used in treatment of persistent pulmonary hypertension of the newborn.

A member of the class of imidazoles that is 4,5-dihydro-1H-imidazole substituted by a benzyl group.


Tolbutamide

A sulphonylurea hypoglycemic agent with actions and uses similar to those of CHLORPROPAMIDE. (From Martindale, The Extra Pharmacopoeia, 30th ed, p290)

An N-sulfonylurea that consists of 1-butylurea having a tosyl group attached at the 3-position.


Trifluoperazine

A phenothiazine with actions similar to CHLORPROMAZINE. It is used as an antipsychotic and an antiemetic.

A member of the class of phenothiazines that is  phenothiazine having a trifluoromethyl subsitituent at the 2-position and a 3-(4-methylpiperazin-1-yl)propyl group at the N-10 position.


Dexlansoprazole

Dexlansoprazole belongs to a class of antisecretory compounds, the substituted benzimidazoles, that suppress gastric acid secretion by specific inhibition of the (H+, K+)-ATPase at the secretory surface of the gastric parietal cell. Because this enzyme is regarded as the acid (proton) pump within the parietal cell, dexlansoprazole has been characterized as a gastric proton-pump inhibitor, in that it blocks the final step of acid production.


bacterial meningitis

Inflammation of the membranes surrounding the brain and spinal cord due to a bacterial infection.


cardiomyopathy

A disease of the heart muscle or myocardium proper. Cardiomyopathies may be classified as either primary or secondary, on the basis of etiology, or on the pathophysiology of the lesion: hypertrophic, dilated, or restrictive.


Calcium beta-glycerophosphate

Any salt or ester of glycerophosphoric acid.

An organic calcium salt having glycerol 2-phosphate(2-) as the counterion.


Chenodeoxycholic acid

A bile acid, usually conjugated with either glycine or taurine. It acts as a detergent to solubilize fats for intestinal absorption and is reabsorbed by the small intestine. It is used as cholagogue, a choleretic laxative, and to prevent or dissolve gallstones.

A dihydroxy-5beta-cholanic acid that is (5beta)-cholan-24-oic acid substituted by hydroxy groups at positions 3 and 7 respectively.


Magnesium silicate

hard, porous, granular substance used in vitamin analysis, chromatography, & antibiotic processing


Arsenic Trioxide

Arsenic trioxide causes morphological changes and DNA fragmentation characteristic of apoptosis in NB4 human promyelocytic leukemia cells in vitro. Arsenic trioxide also causes damage or degradation of the fusion protein promyelocytic leukemia (PML) retinoic acid receptor (RAR)-alpha.


Benazepril

prodrug of benazeprilat inhibit angiotensin-converting enzyme (ACE) and results in decreased plasma angiotensin II, which leads to decreased vasopressor activity and to decreased aldosterone secretion

A benzazepine that is benazeprilat in which the carboxy group of the 2-amino-4-phenylbutanoic acid moiety has been converted to the corresponding ethyl ester. It is used (generally as its hydrochloride salt) as a prodrug for the angiotensin-converting enzyme inhibitor benazeprilat in the treatment of hypertension and heart failure.


Benzthiazide

7-Sulfamoyl-1,2,4-benzothiadiazine 1,1-dioxide in which the hydrogen at position 6 is substituted by chlorine and that at position 3 is substituted by a benzylsulfanylmethyl group. A diuretic, it is used to treat hypertension and edema.


Bexarotene

A tetrahydronaphthalene derivative and RETINOID X RECEPTOR antagonist that is used in the treatment of CUTANEOUS T-CELL LYMPHOMA.


chronic pancreatitis

A chronic inflammatory process causing damage and fibrosis of the pancreatic parenchyma. Signs and symptoms include abdominal pain, malabsorption and diabetes mellitus.


brain cancer

A primary or metastatic malignant neoplasm affecting the brain.


Acrivastine

A member of the class of pyridines that is (pyridin-2-yl)acrylic acid substituted at position 6 by a [(1E)-1-(4-methylphenyl)-3-(pyrrolidin-1-yl)prop-1-en-1-yl group. It is a non-sedating antihistamine used for treatment of hayfever, urticaria, and rhinitis.


Salbutamol

A short-acting beta-2 adrenergic agonist that is primarily used as a bronchodilator agent to treat ASTHMA. Albuterol is prepared as a racemic mixture of R(-) and S(+) stereoisomers. The stereospecific preparation of R(-) isomer of albuterol is referred to as levalbuterol.

A member of the class of phenylethanolamines that is 4-(2-amino-1-hydroxyethyl)-2-(hydroxymethyl)phenol having a tert-butyl group attached to the nirogen atom. It acts as a beta-adrenergic agonist used in the treatment of asthma and chronic obstructive pulmonary disease (COPD).


Refludan

A heterodetic cyclic peptide composed of 65 amino acids joined in sequence and cyclised by three disulfide bridges between cysteine residues 6-14, 16-28 and 22-39. It is a highly specific inhibitor of thrombin and used as an anticoagulant in patients with heparin-induced thrombocytopenia.


Deferasirox

A triazole and benzoate derivative that acts as a selective iron chelator. It is used in the management of chronic IRON OVERLOAD due to blood transfusion or non-transfusion dependent THALASSEMIA.

A member of the class of triazoles, deferasirox is 1,2,4-triazole substituted by a 4-carboxyphenyl group at position 1 and by 2-hydroxyphenyl groups at positions 3 and 5. An orally active iron chelator, it is used to manage chronic iron overload in patients receiving long-term blood transfusions.


Cholecalciferol

Derivative of 7-dehydroxycholesterol formed by ULTRAVIOLET RAYS breaking of the C9-C10 bond. It differs from ERGOCALCIFEROL in having a single bond between C22 and C23 and lacking a methyl group at C24. Some experts recommend maintaining recommended levels of vitamin D intake during the COVID-19 pandemic to maintain bone and muscle health and avoid deficiency. Efficacy of vitamin D supplementation in the prevention or treatment of COVID-19 has not been established.

Any member of a group of fat-soluble hydroxy seco-steroids that exhibit biological activity against vitamin D deficiency. Vitamin D  can be obtained from sun exposure, food and supplements and is biologically inactive and converted into the biologically active calcitriol via double hydroxylation in the body.


Myalgia

Pain in muscle.


Dronedarone

Dronedarone has antiarrhythmic properties belonging to all four Vaughan-Williams classes, but the contribution of each of these activities to the clinical effect is unknown.

A member of the class of  1-benzofurans used for the treatment of  cardiac arrhythmias.


Etoposide phosphate

Etoposide phosphate is a prodrug that is converted to its active moiety, etoposide, by dephosphorylation. Etoposide causes the induction of DNA strand breaks by an interaction with DNA-topoisomerase II or the formation of free radicals, leading to cell cycle arrest, primarily at the G2 stage of the cell cycle, and cell death.


Tolnaftate

A monothiocarbamic ester that is the methyl(3-tolyl)carbamothioate ester of 2-naphthol. A synthetic anti-fungal agent used to treat jock itch, athlete's foot and ringworm.


Timolol

A beta-adrenergic antagonist that is similar in action to PROPRANOLOL; the levo-isomer is more active. Timolol has been proposed as an anti-hypertensive, anti-arrhythmic, anti-angina, and anti-glaucoma agent. It is also used in the treatment of MIGRAINE DISORDERS and tremor.

The (S)-(-) (more active) enantiomer of timolol. A beta-adrenergic antagonist, both the hemihydrate and the maleate salt are used in the mangement of glaucoma, hypertension, angina pectoris and myocardial infarction, and for the prevention of migraine.


SUCRALFATE

A basic aluminum complex of sulfated sucrose.


Romidepsin

a bicyclic depsipeptide and a potent histone deacetylase inhibitor from Chromobacterium violaceum

A cyclodepsipeptide consisting of the cyclic disulfide of (2Z)-2-aminobut-2-enoyl, L-valyl, (3S,4E)-3-hydroxy-7-sulfanylhept-4-enoyl, D-valyl and D-cysteinyl residues coupled in sequence and cyclised head-to tail.


bulimia nervosa

A disorder characterized by recurrent episodes of binge-eating over which the individual feels a lack of control; these episodes of binge-eating are followed by recurrent compensatory behavior to prevent weight gain, usually self-induced vomiting. In addition, self-evaluation is unduly influenced by body image.


Craniocerebral Trauma

A traumatic injury to the head.


Fluconazole

Triazole antifungal agent that is used to treat oropharyngeal CANDIDIASIS and cryptococcal MENINGITIS in AIDS.

A member of the class of  triazoles that is propan-2-ol substituted at position 1 and 3 by 1H-1,2,4-triazol-1-yl groups and at position 2 by a 2,4-difluorophenyl group. It is an antifungal drug used for the treatment of mucosal candidiasis and for systemic infections including systemic candidiasis, coccidioidomycosis, and cryptococcosis.


Finasteride

An orally active 3-OXO-5-ALPHA-STEROID 4-DEHYDROGENASE inhibitor. It is used as a surgical alternative for treatment of benign PROSTATIC HYPERPLASIA.

An aza-steroid that is a synthetic drug for the treatment of benign prostatic hyperplasia.


Glutamic Acid

A non-essential amino acid naturally occurring in the L-form. Glutamic acid is the most common excitatory neurotransmitter in the CENTRAL NERVOUS SYSTEM.

An optically active form of glutamic acid having L-configuration.