Copy of `mondofacto - Online Medical Dictionary`
The wordlist doesn't exist anymore, or, the website doesn't exist anymore. On this page you can find a copy of the original information. The information may have been taken offline because it is outdated.
|
|
|
mondofacto - Online Medical Dictionary
Category: Health and Medicine > Medical Dictionary
Date & country: 26/01/2008, UK
Words: 116197
|
beta sheets<biochemistry> A structure of proteins where the peptide is extended and stabilised by hydrogen bonding between NH and CO groups of different polypeptide chains or separate regions of the same chain. ... (05 Mar 2000) ...
Beta tests<psychiatry> A set of pictorially administered mental tests first used in the United States Army in 1917-1918 to determine the relative mental ability of recruits who were illiterate or deficient in reading and writing English, the instructions being given in signs and the test material's pictorial in characters; distinguished from the Army A …
beta thalassaemia<haematology> Thalassaemia due to one of two or more genes that depress (partially or completely) synthesis of beta-globin chains by the chromosome bearing the abnormal gene. Heterozygous state (A2 t.): thalassaemia minor with Hb A2 increased, Hb F normal or variably increased, Hb A normal or slightly reduced. Homozygous state: thalassaemia m …
beta waveSynonym for beta rhythm ... <neurology> Brain waves in the electroencephalogram which have a frequency of 18 to 30 per second. They are typical during periods of intense activity of the nervous system, and occur principally in the parietal and frontal regions. ... (12 Dec 1998) ...
beta-adrenergic blocking agentA class of drugs that compete with beta-adrenergic agonists for available receptor sites; some compete for both b1 and b2 receptors (e.g., propranolol) while others are primarily either b1 (e.g., metoprolol) or b2 blockers; used in the treatment of a variety of cardiovascular diseases where beta-adrenergic blockade is desirable. ... Synonym: beta-ad …
beta-adrenergic receptor kinase<enzyme> Cyclic-AMP protein kinase which specifically phosphorylates the agonist-occupied form of beta-adrenergic receptor ... Registry number: EC 2.7.1.- ... Synonym: beta-ar kinase, beta-adrenergic receptor kinase 1, g-protein-coupled receptor kinase 2, grk2 (kinase), beta-adrenergic receptor kinase 2, beta-ar kinase 2 ... (26 Jun 1999) ...
beta-adrenergic receptorsAdrenergic receptor's in effector tissues capable of selective activation and blockade by drugs; conceptually derived from the ability of certain agents, such as propranolol, to block only some adrenergic receptor's and of other agents, such as isoproterenol, to activate only the same adrenergic receptor's. Such receptor's are designated as beta-re …
beta-adrenoreceptor antagonistSynonym for beta-adrenergic blocking agent ... A class of drugs that compete with beta-adrenergic agonists for available receptor sites; some compete for both b1 and b2 receptors (e.g., propranolol) while others are primarily either b1 (e.g., metoprolol) or b2 blockers; used in the treatment of a variety of cardiovascular diseases where beta-adrener …
beta-alanine<chemical> Beta-alanine. An amino acid formed in vivo by the degradation of dihydrouracil and carnosine. Since neuronal uptake and neuronal receptor sensitivity to beta-alanine have been demonstrated, the compound may be a false transmitter replacing gaba. A rare genetic disorder, hyper-beta-alaninaemia, has been reported. ... Chemical name: b …
beta-alanyl-arginine hydrolase<enzyme> Also hydrolyzes carnosine, at a lower rate; requires mn2+; inhibited by bestatin; stabilised by sulfhydryl reagents ... Registry number: EC 3.4.13.- ... Synonym: ala-arg hydrolase ... (26 Jun 1999) ...
beta-allocortol5alpha-Pregnane-3a,11b,17,20b,21-pentaol;the 20b isomer of alpha-allocortol and 5a enantiomer of beta-cortol; a metabolite of hydrocortisone found in urine. ... (05 Mar 2000) ...
beta-allocortolone3a,17,20b,21-Tetrahydroxy-5alpha-pregnane-11-one;the 20b isomer of alpha-allocortolone and 5a enantiomer of beta-cortolone; a metabolite of hydrocortisone found in urine. ... (05 Mar 2000) ...
beta-allopregnanediolThe 5alpha-pregnane-3b,20a(and b)-diols; both are metabolites of progesterone and adrenocortical hormones; found in urine. ... (05 Mar 2000) ...
beta-aminoisobutyric acid3-Amino-2-methylpropionic acid;an end product of thymine catabolism; high urinary levels (200-300 mg/day) have been noted in some individuals, either from some disease process or following a genetic pattern. ... (05 Mar 2000) ...
beta-aminoisobutyric acid oxidase<enzyme> Fad-stimulated, probably forms methylmalonylsemialdehyde ... Registry number: EC 1.4.3.- ... Synonym: baib-oxidase ... (26 Jun 1999) ...
beta-amylase<enzyme> An enzyme that catalyses the hydrolysis of 1,4-alpha-glycosidic linkages in starch, glycogen, and related polysaccharides and oligosaccharides so as to remove successive beta-maltose units from the non-reducing ends of the chains. ... Chemical name: 1,4-alpha-D-Glucan maltohydrolase ... Registry number: EC 3.2.1.2 ... (12 Dec 1998) ...
beta-amyloid<protein> The protein which forms thick deposits, or plaques, in the brains of people with Alzheimer's disease, a disease where memory skills gradually deteriorate with age. ... (13 Nov 1997) ...
beta-aspartyl(acetylglucosamine)Misnomer for 1-(beta-asparagino)-N-acetylglucosamine or 1-(beta-aspartamido)-N-acetylglucosamine, or, formally, 1-(beta-l-aspartamido)-N-2-acetamido-1,2-dideoxy-beta-d-glucose; a compound of N-acetylglucosamine and asparagine, linked via the amide nitrogen of the latter and carbon-1 of the former. An important structural linkage in many glycoprotei …
beta-aspartyldipeptidase<enzyme> Catalyses the hydrolytic cleavage of a beta-linked aspartic residue from the n-terminus of a polypeptide; formetly EC 3.4.13.10 ... Registry number: EC 3.4.19.5 ... Synonym: beta-aspartylpeptidase, isoaspartyl dipeptidase, beta-aspartyl-peptidase, l-beta-aspartyl dipeptidase ... (26 Jun 1999) ...
beta-blocker<pharmacology> A large group of medications that act to block specific receptors in the nervous system. A drug that induces adrenergic blockade at either á1 or á2 adrenergic receptors or at both. ... The effect of beta-blockade results in slowing of the heart rate, reduction in blood pressure and reduced anxiety. Beta-blockers ar …
beta-caroteneAn antioxidant which protects cells against oxidation damage that can lead to cancer. Beta carotene is converted, as needed, to vitamin A. ... A yellow carotenoid pigment that gives a reddish colour to plants such as carrots and tomatoes. It is often used as a vitamin supplement because the liver can convert it into Vitamin A. ... Food sources of bet …
beta-carotene 15,15'-dioxygenase<enzyme> An enzyme catalyzing the reaction of beta-carotene plus O2 producing two retinals. ... Synonym: beta-carotene cleavage enzyme, carotenase, carotinase. ... (05 Mar 2000) ...
beta-carotene cleavage enzymeSynonym for beta-carotene 15,15'-dioxygenase ... <enzyme> An enzyme catalyzing the reaction of beta-carotene plus O2 producing two retinals. ... Synonym: beta-carotene cleavage enzyme, carotenase, carotinase. ... (05 Mar 2000) ...
beta-carotene hydroxylase<enzyme> O2-dependent NADPH-dependent monooxygenase from erwinia herbicola; forms zeaxanthin; amino acid sequence has been determined; genbank m87280 ... Registry number: EC 1.14.13.- ... Synonym: beta-carotene monooxygenase, crtz gene product ... (26 Jun 1999) ...
beta-chlorovinyldichloroarsineSynonym for lewisite ... C2H2AsCl3; dichloro(2-chlorovinyl)arsine;a war gas. It is a vesicant, a lung irritant like mustard gas, a systemic poison entering the circulation through the lungs or skin, and a mitotic poison arresting mitosis in the metaphase; dimercaprol is the antidote. ... Synonym: beta-chlorovinyldichloroarsine. ... Origin: W. Lee Lewi …
beta-corticotropinAcid-or pepsin-degraded beta-corticotropin. ... Synonym: corticotropin. ... (05 Mar 2000) ...
beta-cortolAlpha-Cortol with a 20b-OH group; the 5b enantiomer of beta-allocortol, found in urine. ... (05 Mar 2000) ...
beta-cortoloneAlpha-Cortolone with a 20b-OH group; the 5b enantiomer of beta-allocortolone, found in urine. ... (05 Mar 2000) ...
beta-cyclopiazonate dehydrogenase<enzyme> Catalyses the conversion of beta-cyclopiazonic acid to alpha-cyclopiazonic acid, forming a 5-ring fused system connecting the pyrrole and indole rings; minor descriptor (75-83); on-line and index medicus search oxidoreductases (75-83) ... Registry number: EC 1.3.99.9 ... Synonym: beta-cyclopiazonate oxidocyclase ... (26 Jun 1999) ...
beta-cystathionaseSynonym for cystathionine beta-lyase ... <enzyme> An enzyme catalyzing the hydrolysis of l-cystathionine to pyruvate, l-homocysteine, and NH3. ... See: cystathionine gamma-lyase. ... Synonym: beta-cystathionase, cystine lyase. ... (05 Mar 2000) ...
beta-d thalassaemiaThalassaemia due to a gene that depresses synthesis of both beta-and d-globin chains by the chromosome bearing the abnormal gene. Heterozygous state: thalassaemia minor with Hb F comprising 5 to 30% of total haemoglobin but distributed unevenly among cells, Hb A2 reduced or normal. Homozygous state: moderate anaemia with only Hb F present, no Hb A …
beta-D-fucosidase<enzyme> Catalyses hydrolysis of terminal non-reducing beta-d-fucose residues in beta-d-fucosides; also hydrolyzes beta-d-galactosides ... Registry number: EC 3.2.1.38 ... Synonym: beta-d-fucoside fucohydrolase ... (26 Jun 1999) ...
beta-d-galactosidaseA sugar-splitting enzyme that catalyses the hydrolysis of lactose into d-glucose and d-galactose, and that of other beta-d-galactosides; it also catalyses galactotransferase reactions; a deficiency of beta-d -galactosidase leads to problems in the intestinal digestion of lactose; used in the production of milk products for adults who do not have th …
beta-d-glucosidaseA glucohydrolase similar to alpha-d-glucosidase, but attacking beta-glucosides and releasing beta-d-glucose. ... Synonym: amygdalase, cellobiase, gentiobiase. ... (05 Mar 2000) ...
beta-d-glucuronidase<enzyme> An enzyme catalyzing the hydrolysis of various beta-d-glucuronides, liberating free d-glucuronic acid and an alcohol; a deficiency of this enzyme is associated with Sly syndrome. ... Synonym: glusulase, glycuronidase. ... (05 Mar 2000) ...
beta-d-glucuronidase deficiencyA rare deficiency of beta-d-glucuronidase; an autosomal recessive disorder with several allelic forms, characterised by abnormal mucopolysaccharide metabolism leading to progressive mental deterioration, splenic and hepatic enlargement, and dysostosis multiplex. ... Synonym: mucopolysaccharidase. ... (05 Mar 2000) ...
beta-D-mannosidase<enzyme> Catalyses hydrolysis of terminal, non-reducing beta-d-mannose residues in beta-d-mannosides ... Registry number: EC 3.2.1.25 ... Synonym: mannanase, beta-mannosidase, mana gene product ... (26 Jun 1999) ...
beta-DNA<molecular biology> The normal form of DNA found in organisms, which exists as a right-handed helix. ... (09 Oct 1997) ...
beta-endorphin<chemical> A peptide consisting of amino acid sequence 61-91 of the endogenous pituitary hormone beta-lipotropin. ... The first four amino acids show a common tetrapeptide sequence with methionine- and leucine enkephalin. The compound shows opiate-like activity. Injection of beta-endorphin induces a profound analgesia of the whole body for sev …
beta-farnesene7,11-Dimethyl-3-methylene-1,6,10-dodecatriene;one of the two isomers (trans) that occurs in the alarm pheromone of some aphids and also in various essential oils. ... (05 Mar 2000) ...
beta-farnesene synthase<enzyme> Catalyses conversion of farnesyl diphosphate to beta-farnesene; genbank af024615 ... Registry number: EC 3.6.1.- ... (26 Jun 1999) ...
beta-fructofuranosidaseBeta-h-Fructosidase;an enzyme hydrolyzing beta-d-fructofuranosides and releasing free d-fructose; if the substrate is sucrose, the product is d-glucose plus d-fructose (invert sugar); invert sugar is more easily digestible than sucrose. ... Synonym: invertase, invertin, saccharase. ... (05 Mar 2000) ...
beta-galactanase<enzyme> Appears around day 7 of embryo development of the mollusc pomacea sp; responsible for the degradation of acidic beta-galactan to galactose and di- and tri-galactosides; see also exo-1,4-beta-galactanase and endo-1,4-beta galactanase ... Registry number: EC 3.2.1.- ... (26 Jun 1999) ...
beta-galactosidase<enzyme> A group of enzymes that catalyses the hydrolysis of terminal, non-reducing beta-d-galactose residues in beta-galactosides. ... Chemical name: beta-D-Galactoside galactohydrolase ... Registry number: EC 3.2.1.23 ... (12 Dec 1998) ...
beta-galactoside permease<chemical> ... Chemical name: permease, beta-galactoside ... (26 Jun 1999) ...
beta-galactosylceramidase<enzyme> An enzyme that participates in the catabolism of certain ceramides; a deficiency of beta-galactosylceramidase is associated with Krabbe's disease. ... (05 Mar 2000) ...
beta-globulinsThe serum globulins with an electrophoretic mobility in neutral or alkaline solutions intermediate between that of alpha-globulins and gamma-globulins. ... (12 Dec 1998) ...
beta-glucocerebrosidase<enzyme> An enzyme that hydrolyzes beta-glucosides in cerebrosides; a deficiency of this enzyme results in Gaucher disease. ... (05 Mar 2000) ...
beta-glucosidase<enzyme> An enzyme that catalyses the hydrolysis of terminal non-reducing residues in beta-d-glucosides with release of beta-glucose. ... Chemical name: beta-D-Glucoside glucohydrolase ... Registry number: EC 3.2.1.21 ... (12 Dec 1998) ...
beta-haemolytic streptococciThose that produce active haemolysins (O and S) which cause a zone of clear haemolysis on the blood agar medium in the area of the colony; beta-haemolytic streptococci are divided into groups (A to O) on the basis of cell wall C carbohydrate (see Lancefield classification); Group A (in the strains pathogenic for man) comprises more than 50 types (d …
beta-hydroxybutyric acidSynonym for 3-hydroxybutyric acid ... CH3CH(OH)CH2COOH;the d-stereoisomer is one of the ketone bodies and is formed in ketogenesis; it is an important fuel for extrahepatic tissues; as an acyl derivative it is also an intermediate in fatty acid biosynthesis. The l-isomer is found as a coenzyme A derivative in b oxidation of fatty acids. ... Synonym: …
beta-hydroxyisobutyric acidHOCH2CH(CH3)COOH;an intermediate in the degradation of l-valine. ... (05 Mar 2000) ...
beta-hydroxypropionic acidA minor intermediate in propionate and methylmalonate metabolism. ... See: beta-hydroxypropionic aciduria. ... (05 Mar 2000) ...
beta-hydroxypropionic aciduriaElevated levels of beta-hydroxypropionic acid in the urine; seen in defects in methylmalonic acid and propionate metabolism, as well as in ketotic hyperglycinaemia syndrome. ... (05 Mar 2000) ...
beta-hypophamineSynonym for vasopressin ... <protein> A peptide hormone released from the posterior pituitary lobe but synthesised in the hypothalamus. There are 2 forms, differing only in the amino acid at position 8: arginine vasopressin is widespread, while lysine vasopressin is found in pigs. Has antidiuretic and vasopressor actions. Used in the treatment …
beta-ketoacyl-ACP reductaseSynonym for 3-oxoacyl-ACP reductase ... A part of the fatty acid synthase complex; an enzyme reversibly reacting 3-oxoacyl-ACP with NADPH to form d-3-hydroxyacyl-ACP and NADP+. ... Synonym: beta-ketoacyl-ACP reductase. ... (05 Mar 2000) ...
beta-ketoacyl-ACP synthaseSynonym for 3-oxoacyl-ACP synthase ... <enzyme> An enzyme condensing malonyl-ACP and acyl-cys-protein to 3-oxoacyl-ACP + cys-protein + CO2, and similar reactions, as steps in fatty acid synthesis; cys-protein is also a part of the fatty acid synthase complex. ... Synonym: acyl-malonyl-ACP synthase, beta-ketoacyl-ACP synthase. ... (05 Mar 2000)
beta-ketoadipyl-coenzyme A thiolase
<enzyme> Last enzyme in the beta-ketoadipate pathway in pseudomonas putida; genbank l33795 ... Registry number: EC 2.3.1.- ... Synonym: pcaf gene product, beta-ketoadipyl-CoA thiolase ... (26 Jun 1999) ...
beta-ketohydrogenase
Synonym for 3-hydroxyacyl-CoA dehydrogenase ... Beta-Hydroxyacyl dehydrogenase;enzyme catalyzing the oxidation of an l-3-hydroxyacyl-CoA to a 3-ketoacyl-CoA with reduction of NAD+; one of the enzymes of the b oxidation of fatty acids. ... Synonym: beta-ketohydrogenase, beta-ketoreductase. ... (05 Mar 2000) ...
beta-ketoreductase
Synonym for 3-hydroxyacyl-CoA dehydrogenase ... Beta-Hydroxyacyl dehydrogenase;enzyme catalyzing the oxidation of an l-3-hydroxyacyl-CoA to a 3-ketoacyl-CoA with reduction of NAD+; one of the enzymes of the b oxidation of fatty acids. ... Synonym: beta-ketohydrogenase, beta-ketoreductase. ... (05 Mar 2000) ...
beta-ketothiolase
Synonym for acetyl-CoA acyltransferase ... <enzyme> An enzyme catalyzing the thioclastic cleavage by coenzyme A of beta-ketoacyl-CoA, forming an acyl-CoA with a carbon chain shorter by two atoms, the missing two atoms appearing as acetyl-CoA. A step in fatty acid degradation. ... See: acetyl-CoA acetyltransferase. ... Synonym: 3-ketoacyl-CoA thi …
beta-lactam
<pharmacology> A class of broad spectrum antibiotics that are structurally and pharmacologically related to the penicillins and cephalosporins. ... (05 Mar 2000) ...
beta-lactam resistance
Nonsusceptibility of an organism to the action of the beta-lactam antibiotics. ... (12 Dec 1998) ...
beta-lactamase
<enzyme> An enzyme produced by some bacteria, which causes the breakdown of the active form of some penicillin antibiotics, rendering them ineffective. It causes the hydrolysis of a beta-lactam (as penicillin to penicilloic acid); found in most strains of staphylococcus bacteria that are naturally resistant to penicillin. ... Synonym: cephalos …
beta-lactamase inhibitor
<pharmacology> Drugs such as clavulanic acid, which are used to inhibit bacterial beta-lactamases; often used with a penicillin or cephalosporin to overcome drug resistance. ... (05 Mar 2000) ...
beta-lactamases
<enzyme> Enzymes found in many bacteria which catalyze the hydrolysis of the amide bond in the beta-lactam ring. Well known antibiotics destroyed by these enzymes are penicillins and cephalosporins. ... Chemical name: beta-Lactamhydrolase ... Registry number: EC 3.5.2.6 ... (12 Dec 1998) ...
beta-mercaptoethanol
Synonym for 2-mercaptoethanol ... HO-CH2-CH2-SH;a reagent used to reduce disulfide bonds, particularly in proteins, and to prevent their formation. ... Synonym: beta-mercaptoethanol. ... (05 Mar 2000) ...
beta-n-acetylhexosaminidase
<enzyme> An enzyme hydrolyzing terminal non-reducing n-acetyl-d-hexosamine residues in n-acetyl-beta-d-hexosaminides. It acts on glucosides, galactosides, and several oligosaccharides. Hexosaminidase a cleaves gm2, ga2, globosides, and hexosamine oligosaccharides. Deficiency of this isoenzyme causes tay-sachs disease. Hexosaminidase b cleaves …
beta-naphthoflavone
<chemical> A polyaromatic hydrocarbon inducer of p4501a1 and p4501a2 cytochromes. (proc soc exp biol med 1994 dec:207(3):302-308) ... Pharmacological action: enzyme inhibitors. ... (12 Dec 1998) ...
beta-normal
<radiobiology> Beta-N, the normalised beta, is beta relative to the beta limit. ... (09 Oct 1997) ...
beta-oxidation
<biochemistry> The oxidative breakdown of fatty acids into acetyl-coenzyme A by repeated oxidation at the beta-carbon atom. ... Oxidation of the beta-carbon (carbon 3) of a fatty acid causes the formation of the beta-keto (beta-oxo) acid analog. This is of importance in fatty acid catabolism, the entire pathway for the catabolism of saturated …
beta-oxidation-condensation theory
<biochemistry> That the two carbon fragments split from the fatty acid molecule by beta-oxidation are converted to acetic acid and then condensed to acetoacetic acid. ... (05 Mar 2000) ...
beta-poloidal
<radiobiology> Beta-P is the same as the ordinary beta, except only the poloidal field is used in calculating the magnetic field pressure. Beta-P is greater than 1 in many modern tokamaks. ... (09 Oct 1997) ...
beta-sitosterol
Stigmast-5-en-3b-ol; (24R)-24-ethyl-5-cholesten-3b-ol;a phytosterol and anticholesteraemic. ... Synonym: cinchol. ... (05 Mar 2000) ...
beta-sulfinylpyruvic acid
<biochemistry> An intermediate product of l-cysteine catabolism in mammalian tissue. ... Structure: HO2S-CH2-CO-COOH ... (05 Mar 2000) ...
beta-thionase
Synonym for cystathionine beta-synthase ... <enzyme> A multifunctional pyridoxal phosphate enzyme. In the second stage of cysteine biosynthesis it catalyses the reaction of homocysteine with serine to form cystathionine with the elimination of water. ... Chemical name: L-Serine hydro-lyase (adding homocysteine) ... Registry number: EC 4.2.1.22
beta-thromboglobulin
<haematology> A platelet-specific protein which is released when platelets aggregate. Elevated plasma levels have been reported after deep venous thrombosis, preeclampsia, myocardial infarction with mural thrombosis, and myeloproliferative disorders. Measurement of beta-thromboglobulin in biological fluids by radioimmunoassay is used for the …
beta-tocopherol
5,8-Dimethyltocol;a lower homolog of alpha-tocopherol, that contains one less methyl group in the aromatic nucleus and is less active biologically; accompanies alpha-T and gamma-beta-tocopherol ... (05 Mar 2000) ...
beta-tyrosinase
Synonym for tyrosine phenol-lyase ... <enzyme> An enzyme that catalyses the cleavage of tyrosine to phenol, pyruvate, and ammonia. It is a pyridoxal phosphate protein. The enzyme also forms pyruvate from d-tyrosine, l-cysteine, s-methyl-l-cysteine, l-serine, and d-serine, although at a slower rate. ... Chemical name: L-Tyrosine phenol-lyase (de …
beta-ureidopropionase
<enzyme> Chemical name: n-carbamoyl-beta-alanine amidohydrolase ... Registry number: EC 3.5.1.6 ... Synonym: n-carbamoyl beta-alanine amidohydrolase ... (26 Jun 1999) ...
beta, or beta-value
<radiobiology> Ratio of plasma kinetic pressure to magnetic-field pressure, proportional to the ratio of plasma kinetic energy density to magnetic field energy density. Beta is usually measured relative to the total, local field (loosely called beta toroidal), but sometimes the plasma pressure relative to only the poloidal component of the fi …
betacism
A defect in speech in which the sound of b is given to other consonants. ... Origin: G. Beta, the second letter of the alphabet ... (05 Mar 2000) ...
betacyanin
One of several red plant pigments; a betalain. An example is betanin. Elevated in urine of individuals with beeturia. ... Origin: L. Beta, beet, + G. Kyanos, dark blue substance, + -in ... (05 Mar 2000) ...
betacyaninuria
Synonym: beeturia. ... Origin: betacyanin + G. Ouron, urine ... (05 Mar 2000) ...
betadine
<drug> A popular tradename iodine-containing topical antiseptic agent. ... (27 Sep 1997) ...
betaherpesvirinae
A subfamily of herpesviridae characterised by a relatively long replication cycle. There are two genera: cytomegalovirus and muromegalovirus. ... (12 Dec 1998) ...
betahistine
<chemical> N-methyl-2-pyridineethanamine. A physiological histamine analog vasodilator agent that also acts as a histamine h1 receptor agonist. It is used in meniere's disease and in vascular headaches but may exacerbate bronchial asthma and peptic ulcers. ... Pharmacological action: histamine agonist, vasodilator agents. ... Chemical name: 2-P …
betahistine hydrochloride
2-[2-(Methylamino)ethyl]pyridine dihydrochloride;an inhibitor of diamine oxidase used as a histamine-like agent for treatment of Meniere's disease. ... (05 Mar 2000) ...
betaine
<chemical> A derivative of glycine characterised by high water solubility. Can function as an osmotic agent in plant tissues. ... See: biogenic amines. ... (18 Nov 1997) ...
betaine-aldehyde dehydrogenase
An oxidizing enzyme that catalyses the oxidation of betaine aldehyde with NAD+ and water to betaine and NADH; part of the choline oxidase system and of choline metabolism. ... (05 Mar 2000) ...
betalains
A group of plant pigments found almost exclusively in the family Centrospermae, for example, betamin. ... (05 Mar 2000) ...
betamethasone
<chemical> A glucocorticoid given orally, parenterally, by local injection, by inhalation, or applied topically in the management of various disorders in which corticosteroids are indicated. Its lack of mineralocorticoid properties makes betamethasone particularly suitable for treating cerebral oedema and congenital adrenal hyperplasia. ... Ph …
betamethasone 17-valerate
<chemical> 9-fluoro-11 beta,17,21-trihydroxy-16 beta-methylpregna-1,4-diene-3,20-dione-17-valerate. A synthetic glucocorticoid with high topical anti-inflammatory activity and relatively low systemic anti-inflammatory activity. ... Pharmacological action: steroidal anti-inflammatory agents, glucocorticoids, synthetic, glucocorticoids, topical. …
betamimetic
<pharmacology> Stimulating or mimicking the stimulation of the beta adrenergic receptors of the sympathetic nervous systems, an agent that so acts. ... (18 Nov 1997) ...
betanidine sulfate
Synonym for bethanidine sulfate ... 1-benzyl-2,3-dimethylguanidine;an adrenergic blocking agent used for palliative treatment of hypertension. ... Synonym: betanidine sulfate. ... (05 Mar 2000) ...
betanin
The red pigment in beets (Beta vulgaris); elevated in urine of individuals with beeturia. ... Origin: fr. Betacyanin ... (05 Mar 2000) ...
betatron
<radiobiology> A circular electron accelerator that is a source of either high energy electrons or X-rays. ... (05 Mar 2000) ...
betaxolol
<chemical> 1-(4-(2-(cyclopropylmethoxy)ethyl)phenoxy)-3-((1-methylethyl)amino)-2-propanol. A cardioselective beta-1-adrenergic antagonist with no partial agonist activity. ... The drug is a potent antihypertensive agent and has been effective in the treatment of patients with glaucoma and airway diseases. ... Pharmacological action: adrenergic …
betaxolol hydrochloride
1-[4-[2-(cyclopropylmethoxy)ethyl]phenoxy]-3-isopropylaminopropan-2-ol hydrochloride;a beta-adrenergic blocking agent used primarily in the treatment of ocular hypertension and chronic open-angle glaucoma. ... (05 Mar 2000) ...
betazole
<chemical> 3-(beta-aminoethyl)pyrazole. A histamine h2 agonist used clinically to test gastric secretory function. ... Pharmacological action: gastrointestinal agents, histamine agonist. ... Chemical name: 1H-Pyrazole-3-ethanamine ... (12 Dec 1998) ...
