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mondofacto - Online Medical Dictionary
Category: Health and Medicine > Medical Dictionary
Date & country: 26/01/2008, UK
Words: 116197
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quilted sutureSynonym for mattress suture ... A suture utilizing a double stitch that forms a loop about the tissue on both sides of a wound, producing eversion of the edges when tied. ... Synonym: quilted suture. ... (05 Mar 2000) ...
quin-2<chemical> A fluorescent compound that binds calcium tightly and resembles the chelator EGTA in ability to bind calcium much more tightly than magnesium. Binding of calcium causes large changes in ultraviolet absorption and fluoresence. ... The wavelengths of light that cause fluorescence when calcium is bound are longer than the wavelengths t …
quinaSynonym: cinchona. ... Origin: Sp., fr. Peruv. Quina or kina, cinchona ... (05 Mar 2000) ...
quinacrine<chemical> A fluorescent dye that intercalates into DNA helices. Chromosomes stained with quinacrine show typical banding patterns of fluorescence at specific locations, Q bands, that can be used to recognise chromosomes and their abnormalities. ... (18 Nov 1997) ...
quinacrine chromosome banding stainq-banding stain ...
quinacrine hydrochlorideAn acridine derivative, C23H30ClN3O-2HCl-2H2O, used as an antimalarial that destroys the trophozoites of Plasmodium vivax and P. Falciparum, but does not affect the gametocytes, sporozoites, or exoerythrocytic stage of parasites; also used as an anthelmintic. As a dihydrochloride, it is used as a stain in cytogenetics to demonstrate Y chromatin by …
quinacrine mustard<chemical> 2-methoxy-6-chloro-9-[4-bis(beta-chloroethyl)amino-1-methylbutylamino]acridine. Nitrogen mustard analog of quinacrine used primarily as a stain in the studies of chromosomes and chromatin. Fluoresces by reaction with nucleic acids in chromosomes. ... Pharmacological action: fluorescent dyes. ... Chemical name: 1,4-Pentanediamine, N1, …
quinaldic acidQuinoline-2-carboxylic acid;a product of l-tryptophan catabolism, via kynurenic acid, found in human urine. ... Synonym: quinaldinic acid. ... (05 Mar 2000) ...
quinaldic acid 4-monooxygenase<enzyme> Catalyses conversion of quinaldic acid to kynurenic acid in presence of oxygen, iron(ii), and NADH; do not confuse with quinaldic acid 4-oxidoreductase ... Registry number: EC 1.14.13.- ... (26 Jun 1999) ...
quinaldic acid 4-oxidoreductase<enzyme> An iron-molybdenum enzyme; converts quinoline 2-carboxylic acid (quinaldate) to kynurenic acid ... Registry number: EC 1.14.99.- ... Synonym: quinaldate hydroxylase, quinoline 2-carboxylic acid - (acceptor) 4-oxidoreductase (hydroxylating) ... (26 Jun 1999) ...
quinaldine oxidoreductase<enzyme> Converts quinaldine to 1h-4-oxoquinaldine; a molybdo-iron/sulfur-flavoprotein; does not use nad, nadp or molecular oxygen ... Registry number: EC 1.5.99.- ... Synonym: quinaldine 4-oxidoreductase, quinaldine 4-oxidase ... (26 Jun 1999) ...
quinaldine redA styrene-quinolinium iodide; used as a pH indicator (turns red at pH 3.2) in a 1% ethanol solution. ... (05 Mar 2000) ...
quinaldinic acidSynonym for quinaldic acid ... Quinoline-2-carboxylic acid;a product of l-tryptophan catabolism, via kynurenic acid, found in human urine. ... Synonym: quinaldinic acid. ... (05 Mar 2000) ...
quinaphthol<drug> A drug used as an intestinal antiseptic. ... (09 Oct 1997) ...
quinaquinaSynonym: cinchona. ... Origin: a reduplication of Sp. Quina, cinchona ... (05 Mar 2000) ...
quinazolinesA class of alkaloids that are derived biosynthetically from anthranilic acid. ... (05 Mar 2000) ...
quince1. The fruit of a shrub (Cydonia vulgaris) belonging to the same tribe as the apple. It somewhat resembles an apple, but differs in having many seeds in each carpel. It has hard flesh of high flavor, but very acid, and is largely used for marmalade, jelly, and preserves. ... 2. <botany> A quince tree or shrub. ... <botany> Japan quince, t …
QuinckeHeinrich I., German physician, 1842-1922. ... See: Quincke's disease, Quincke's oedema, Quincke's pulse, Quincke's puncture, Quincke's sign. ... (05 Mar 2000) ...
quincke's diseaseThis is angioneurotic oedema (or angioedema), a form of localised swelling of the deeper layers of the skin and fatty tissues beneath the skin. Hereditary angioneurotic oedema (or hereditary angioedema) is a genetic form of angioedema. Persons with it are born lacking an inhibitor protein (called c1 esterase inhibitor) that normally prevents activa …
Quincke's oedemaSynonym for angioedema ... A vascular reaction involving the deep dermis or subcutaneous or submucal tissues, representing localised oedema caused by dilatation and increased permeability of the capillaries and characterised by development of giant wheals. ... (18 Nov 1997) ...
Quincke's pulseThe capillary pulse as appreciated in the finger and toenails during aortic regurgitation; ebb and flow is seen. ... Synonym: Quincke's sign. ... (05 Mar 2000) ...
Quincke's punctureSynonym for lumbar puncture ... A diagnostic procedure where a sterile needle is introduced into the lower spine (L2) to collect cerebrospinal fluid for diagnostic purposes. Chemical analysis, cellular analysis and CSF pressure can all be measured with this procedure. This test can aid in the diagnosis of meningitis, subarachnoid haemorrhage and mul …
Quincke's signSynonym for Quincke's pulse ... The capillary pulse as appreciated in the finger and toenails during aortic regurgitation; ebb and flow is seen. ... Synonym: Quincke's sign. ... (05 Mar 2000) ...
quincuncialOf the arrangement of corolla lobes in a bud, a variant of imbricate aestivation. ... (09 Oct 1997) ...
quincunx1. An arrangement of things by fives in a square or a rectangle, one being placed at each corner and one in the middle; especially, such an arrangement of trees repeated indefinitely, so as to form a regular group with rows running in various directions. ... 2. <astronomy> The position of planets when distant from each other five signs, or 150 …
quinestradiolQuinestradol ... 3-(Cyclopentyloxy)estra-1,3,5(10)-triene-16a,17b-diol;an oestrogen. ... (05 Mar 2000) ...
quinestrol<chemical> A synthetic form of oestrogenused in oral contraceptives. ... (09 Oct 1997) ...
quinethazone7-Chloro-2-ethyl-1,2,3,4-tetrahydro-4-oxo-6-quinazolinesulfonamide;a diuretic and antihypertensive agent. ... (05 Mar 2000) ...
quingestanol acetate3-(Cyclopentyloxy)-19-nor-17a-pregna-3,5-dien-20-yn-17-ol acetate;a progestational agent. ... (05 Mar 2000) ...
quinhydrone electrodeOne of several oxidation-reduction electrode's in which the ratio of the two forms (quinone-quinhydrone), determined by the hydrogen ion concentration, sets up a potential that can be measured and converted to a pH value (fails above pH 8). ... (05 Mar 2000) ...
quinic acid<chemical> An acid which is found in cinchona bark and elsewhere in plants. ... Chemical name: Cyclohexanecarboxylic acid, 1,3,4,5-tetrahydroxy-, (1R-(1alpha,3alpha,4alpha,5beta))- ... (12 Dec 1998) ...
quinidine polygalacturonateA salt of quinidine that may be used in place of quinidine sulfate; antiarrhythmic agent. ... See: quinidine sulfate. ... See: quinidine. ... (05 Mar 2000) ...
quinidine sulfateThe salt of quinidine that is customarily administered as a cardiac antiarrhythmic agent. The drug depresses myocardial conduction, contraction, automaticity and contraction; it also by a direct effect impairs conduction through the atrioventricular node. Has vagolytic action that may increase heart rate. ... See: quinidine. ... (05 Mar 2000) ...
quinidine-3-hydroxylase<enzyme> Induced by phenobarbital ... Registry number: EC 1.14.99.- ... (26 Jun 1999) ...
quinine<drug> An alkaloid isolated from cinchona bark. Used as an antimalarial. It is believed to act by raising the pH of endocytotic vesicles and inhibiting internal membrane fusion processes. ... (18 Nov 1997) ...
quinine and urea hydrochlorideSclerosing agent for treatment of internal haemorrhoids, hydrocele, and varicose veins, containing not less than 58% and not more than 65% of anhydrous quinine. ... (05 Mar 2000) ...
quinine bisulfateThe acid sulfate of quinine, very soluble in water. ... (05 Mar 2000) ...
quinine carbacryclic resinSee: resin. ... (05 Mar 2000) ...
quinine carbacrylic resinSynonym for azuresin ... A complex of azure A and carbacrylic resin; used as an indicator for the detection of gastric achlorhydria without intubation. ... Synonym: quinine carbacrylic resin. ... (05 Mar 2000) ...
quinine carbacrylic resin testA test for gastric anacidity. ... See: quinine carbacrylic resin. ... (05 Mar 2000) ...
quinine ethylcarbonateAn almost tasteless form of quinine that is poorly absorbed from the intestinal tract. ... (05 Mar 2000) ...
quinine sulfateThe most frequently prescribed salt of quinine. ... (05 Mar 2000) ...
quinine urethanA mixture of urethan and quinine hydrochloride; a sclerosing agent for the treatment of varicose veins. ... (05 Mar 2000) ...
quininismSynonym for cinchonism ... Poisoning by cinchona, quinine, or quinidine; characterised by tinnitus, headache, deafness, and occasionally, anaphylactoid shock. ... Synonym: quininism. ... (05 Mar 2000) ...
Quinlan's testA test for bile; when a thin layer of bile is examined through a spectroscope, absorption lines appear in the violet. ... (05 Mar 2000) ...
quinocide hydrochloride8-(4-Aminopentylamino)-6-methoxyquinoline hydrochloride;an antimalarial comparable to primaquine in effectiveness and scope. ... (05 Mar 2000) ...
quinoline<chemistry> A nitrogenous base, C9H7N obtained as a pungent colourless liquid by the distillation of alkaloids, bones, coal tar, etc. It the nucleus of many organic bodies, especially of certain alkaloids and related substances; hence, by extension, any one of the series of alkaloidal bases of which quinoline proper is the type. ... Alternativ …
quinoline dehydrogenase<enzyme> Forms 2-hydroxyquinoline; molybdenum-containing enzyme; oxygen atom is derived water ... Registry number: EC 1.5.1.- ... (26 Jun 1999) ...
quinoline oxidoreductase<enzyme> Oxidises quinoline, quinoline-4-carboxylate, 4-chloroquinoline and 4-methylquinoline to the corresponding 2-oxo-1,2-dihydroquinolines; contains molybdopterin; qorl, qors, and qorm are subunits of enzyme from pseudomonas putida ... Registry number: EC 1.5.99.- ... Synonym: quinoline-4-carboxylic acid oxidoreductase, quinoline 2-oxidored …
quinolinic acid<chemical> 2,3-pyridinedicarboxylic acid. A metabolite of tryptophan with a possible role in neurodegenerative disorders. Elevated csf levels of quinolinic acid are significantly correlated with the severity of neuropsychological deficits in patients who have aids. ... Chemical name: 2,3-Pyridinedicarboxylic acid ... (12 Dec 1998) ...
quinolinic acid synthetase<chemical> Aspartic acid and dihydroxyacetone phosphate are substrates; fad is cofactor ... Chemical name: synthetase, quinolinate ... Synonym: quinolinate synthetase ... (26 Jun 1999) ...
quinolinolSynonym for 8-hydroxyquinoline ... A fungistat and chelating agent. ... Synonym: quinolinol. ... (05 Mar 2000) ...
quinolizidinesA class of alkaloids based on the quinolizidine (norlupinane) structure. ... (05 Mar 2000) ...
quinolonesQuinolines which are substituted in any position by one or more oxo groups. These compounds can have any degree of hydrogenation, any substituents, and fused ring systems. ... (12 Dec 1998) ...
quinoneAromatic dicarbonyl compound derived from a dihydroxy aromatic compound. Ubiquinone (coenzyme Q) is a dimethoxy dicarbonyl derivative of benzene involved in electron transport. Other quinones may act as tanning agents. ... (18 Nov 1997) ...
quinone methide isomerase<enzyme> From insect cuticle; converts 4-alkyl catechols to quinone methides ... Registry number: EC 5.3.2.- ... Synonym: o-quinone-quinone methide isomerase, 4-alkyl-o-quinone-2-hydroxy-4-quinone methide isomerase ... (26 Jun 1999) ...
quinone methide tautomerase<enzyme> Enzyme from insect cuticle converts n-acetyldopamine quionone methide to 1,2-dehydro-n-acetyldopamine ... Registry number: EC 5.3.2.- ... Synonym: nada quione methide tautomerase ... (26 Jun 1999) ...
quinone reductase<enzyme> Enzymes that reduce quinones to phenols usually using NADH or NADPH as a source of reducant. ... (18 Nov 1997) ...
quinone reductases<enzyme> NAD(p)h:(quinone acceptor) oxidoreductases. A family that includes three enzymes which are distinguished by their sensitivity to various inhibitors. (NAD(p)h dehydrogenase (quinone)) is a flavoprotein which reduces various quinones in the presence of NADH or NADPH and is inhibited by dicoumarol. (NADH dehydrogenase (quinone)) require …
quinonesHydrocarbon rings which contain two ketone moieties in any position. They can be substituted in any position except at the ketone groups. ... (12 Dec 1998) ...
quinonoid dihydropterin reductase<enzyme> Quinonoid dihydropterin plus NADH gives tetrahydropterin plus nad ... Registry number: EC 1.- ... Synonym: dihydropterin reductase ... (26 Jun 1999) ...
quinovoseSynonym for d-epirhamnose ... 6-deoxy-d-glucose;occurs in plants and bacteria in combination with diacylglycerol and is often sulfated (at C-6) in glycolipids. ... Synonym: quinovose. ... (05 Mar 2000) ...
quinpirole<chemical> A dopamine d2/d3 receptor agonist. ... Pharmacological action: dopamine agonists. ... (12 Dec 1998) ...
quinquedigitateSynonym: pentadactyl. ... Origin: L. Quinque, five, + digitus, digit ... (05 Mar 2000) ...
quinquetubercularHaving five tubercles or cusps, as certain molar teeth. ... Origin: L. Quinque, five, + tuberculum, tubercle, dim. Of tuber, a swelling ... (05 Mar 2000) ...
quinquevalentSynonym: pentavalent. ... Origin: L. Quinque, five, + valentia, strength ... (05 Mar 2000) ...
quinquinaSynonym for cinchona ... A genus of rubiaceous south american trees that yields the toxic cinchona alkaloids from their bark; quinine, quinidine, chinconine, cinchonidine and others are used to treat malaria and cardiac arrhythmias. ... (12 Dec 1998) ...
quinsy<otolaryngology> An inflammation of the throat, or parts adjacent, especially of the fauces or tonsils, attended by considerable swelling, painful and impeded deglutition, and accompanied by inflammatory fever. It sometimes creates danger of suffocation. ... Synonym: squinancy, and squinzey. ... Origin: Contr. Fr. Squinancy, F. Esquinancie, L. …
quintanOccurring as the fifth, after four others also, occurring every fifth day, reckoning inclusively; as, a quintan fever. ... <medicine> An intermittent fever which returns every fifth day, reckoning inclusively, or in which the intermission lasts three days. ... Origin: L. Quintanus, fr. Quintus fifth, quinque five. See Five. ... Source: Websters …
quintan feverA louse-borne disease first recognised in the trenches of world war i (and so called trench fever), again a major problem in the military in world war II, seen endemically in mexico, n. Africa, e, europe, and elsewhere. The cause, rochalimaea quintana, is an unusual rickettsia that multiplies in the gut of the body louse. Transmission to people can …
quintessence1. The fifth or last and highest essence or power in a natural body. See Ferment oils, under Ferment. ... The ancient Greeks recognised four elements, fire, air, water, and earth. The Pythagoreans added a fifth and called it nether, the fifth essence, which they said flew upward at creation and out of it the stars were made. The alchemists sometimes …
quintupletOne of five children born at one birth. ... Origin: L. Quintuplex, fivefold ... (05 Mar 2000) ...
quinuclidinyl benzilate<chemical> A high-affinity muscarinic antagonist commonly used as a tool in animal and tissue studies. ... Pharmacological action: muscarinic antagonists. ... Chemical name: Benzeneacetic acid, alpha-hydroxy-alpha-phenyl-, 1-azabicyclo(2.2.2)oct-3-yl ester ... (12 Dec 1998) ...
quipazine<chemical> A pharmacologic congener of serotonin that contracts smooth muscle and has actions similar to those of tricyclic antidepressants. It has been proposed as an oxytocic. ... Pharmacological action: antidepressive agents, second-generation, oxytocics, serotonin agonists. ... Chemical name: Quinoline, 2-(1-piperazinyl)- ... (12 Dec 1998)
quirites
Roman citizens. ... After the Sabines and Romans had united themselves into one community, under Romulus, the name of Quirites was taken in addition to that of Romani, the Romans calling themselves in a civil capacity Quirites, while in a political and military capacity they retained the name of Romani. ... Origin: L, fr. Cures, a Sabine town. ... Sou …
quirk
1. A sudden turn; a starting from the point or line; hence, an artful evasion or subterfuge; a shift; a quibble; as, the quirks of a pettifogger. 'Some quirk or . . . Evasion.' 'We ground the justification of our nonconformity on dark subtilties and intricate quirks.' (Barrow) ... 2. A fit or turn; a short paroxysm; a caprice. 'Quirks of joy and gri …
quisqualate
An agonist of the Q type excitatory amino acid receptor. ... See: kainate. ... (18 Nov 1997) ...
quisqualate receptor
Synonym for AMPA receptor ... <cell biology> Glutamate operated ion channel. ... See: excitatory amino acid receptor channels. ... (05 Feb 1998) ...
quisqualic acid
<chemical> Alpha-amino-3,5-dioxo-1,2,4-oxadiazolidine-2-propanoic acid. An agonist at two subsets of excitatory amino acid receptors, ionotropic receptors that directly control membrane channels and metabotropic receptors that indirectly mediate calcium mobilization from intracellular stores. The compound is obtained from the seeds and fruit …
quit
1. To set at rest; to free, as from anything harmful or oppressive; to relieve; to clear; to liberate. 'To quit you of this fear, you have already looked Death in the face; what have you found so terrible in it?' (Wake) ... 2. To release from obligation, accusation, penalty, or the like; to absolve; to acquit. 'There may no gold them quyte.' (Chauce …
quitch grass
<botany> A perennial grass (Agropyrum repens) having long running rootstalks, by which it spreads rapidly and pertinaciously, and so becomes a troublesome weed. Also called couch grass, quick grass, quick grass, twitch grass. ... Origin: Properly quick grass, being probably so called from its vigorous growth, or from its tenacity of life. See …
quodque
Each, every. ... Origin: L. ... (05 Mar 2000) ...
quoin
1. Originally, a solid exterior angle, as of a building; now, commonly, one of the selected pieces of material by which the corner is marked. ... In stone, the quoins consist of blocks larger than those used in the rest of the building, and cut to dimension. In brickwork, quoins consist of groups or masses of brick laid together, and in a certain im …
quotidian fever
Synonym for quotidian malaria ... Malaria in which the paroxysms occur daily; usually a double tertian malaria, in which there is an infection by two distinct groups of Plasmodium vivax parasites sporulating alternately every 48 hours, but also may be an infection by the pernicious form of malarial parasite, P. Falciparum, combined with P. Vivax, or …
quotidian malaria
Malaria in which the paroxysms occur daily; usually a double tertian malaria, in which there is an infection by two distinct groups of Plasmodium vivax parasites sporulating alternately every 48 hours, but also may be an infection by the pernicious form of malarial parasite, P. Falciparum, combined with P. Vivax, or infection by two distinct P. Fal …
quotient
1. <mathematics> The number resulting from the division of one number by another, and showing how often a less number is contained in a greater; thus, the quotient of twelve divided by four is three. ... 2. The result of any process inverse to multiplication. See the Note under Multiplication. ... Origin: F, fr. L. Quoties how often, how many t …
quoties opus sit
<abbreviation> As often as necessary. ... Origin: L. ... (05 Mar 2000) ...
qv
<abbreviation> ... Origin: L. Quantum vis, as much as you wish. ... (05 Mar 2000) ...
R antigen
Synonym for beta-haemolytic streptococci ... Those 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 pathoge …
R body
<biology, microbiology> A protein structure, visible by optical microscopy, found in various bacteria, probably related to plasmid presence. ... Found both in free living pseudomonads and in various bacteria endosymbiotic in Paramecium. Has toxic activity against Paramecium and confers killer characteristics on Paramecium that ingest bacteria …
R enzyme
Synonym for alpha-dextrin endo-1,6-alpha-glucosidase ... <enzyme> An enzyme with action similar to that of isoamylase; it cleaves 1,6-alpha-glucosidic linkages in pullalan, amylopectin, and glycogen, and in alpha-and beta-amylase limit-dextrins of amylopectin and glycogen. ... Compare: isoamylase. ... Synonym: limit dextrinase, pullulanase, R en …
r factors
A class of plasmids that transfer antibiotic resistance from one bacterium to another by conjugation. ... (12 Dec 1998) ...
r group
<chemistry> A chemical abbreviation that normally denotes an alkyl group, but is occasionally used to refer to other organic groups. ... (09 Oct 1997) ...
R loop
<molecular biology> A single stranded loop section of DNA formed by the association of a section of ssRNA with the other strand of the DNA in this region whereby one DNA strand is displaced as the loop. ... Mature mRNA can be used to form loops from exons with the intervening double stranded linear regions being introns. ... (23 Aug 1998) ...
R plasmid
<molecular biology> A plasmid that confers resistance to one or more antibiotics or other poisonous compounds in a bacterium. ... (17 Dec 1997) ...
R plasmids
Synonym for resistance plasmids ... Plasmid's carrying genes responsible for antibiotic (or antibacterial drug) resistance among bacteria (notably Enterobacteriaceae); they may be conjugative or nonconjugative plasmid's, the former possessing transfer genes (resistance transfer factor) lacking in the latter. ... Synonym: R factors, R plasmids, resist …
R recombinase
<enzyme> From zygosaccharomyces rouxii; a yeast site-specific recombinase ... Registry number: EC 2.7.7.- ... Synonym: arg recombinase, r protein ... (26 Jun 1999) ...
R wave
The first positive (upward) deflection of the QRS complex in the electrocardiogram; successive upward deflections within the same QRS complex are labelled R', R'', etc. ... (05 Mar 2000) ...
R-banding
See: R-banding stain. ... (05 Mar 2000) ...
R-banding stain
<technique> A reverse Giemsa chromosome banding method that produces bands complementary to G-bands; induced by treatment with high temperature, low pH, or acridine orange staining; often used together with G-banding on human karyotype to determine whether there are deletions. ... (05 Mar 2000) ...
