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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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dehydroacetic acid3-Acetyl-6-methyl-2H-pyran-2,4-(3H)-dione;an antimicrobial agent used as a preservative in cosmetics. ... (05 Mar 2000) ...
dehydroascorbatase<enzyme> Catalyses the hydrolysis of the gamma lactone, dehydroascorbate, to diketogulonate. ... Registry number: EC 3.1.1.- ... (12 Dec 1998) ...
dehydroascorbic acid<chemical> L-threo-2,3-hexodiulosonic acid gamma-lactone. The reversibly oxidised form of ascorbic acid. It is the lactone of 2,3-diketogulonic acid and has antiscorbutic activity in man on oral ingestion. ... Chemical name: L-threo-2,3-Hexodiulosonic acid, gamma-lactone ... (12 Dec 1998) ...
dehydrobilirubinSynonym for biliverdin ... <biochemistry> A green pigment found in bile which is formed during haem catabolism, mainly the breaking down of old red blood cells, within the liver. It has the chemical formula C33H34N4O6. It transforms into the red-orange bile pigment bilirubin. ... (09 Oct 1997) ...
dehydrocholateA salt or ester of dehydrocholic acid. ... (05 Mar 2000) ...
dehydrocholate testA method of determining the speed of the blood circulation; a solution of sodium dehydrocholate is injected intravenously, and the time that elapses before a bitter taste is noted in the mouth is recorded; the average of this time is normally about 13 seconds. ... (05 Mar 2000) ...
dehydrocholesterolsCholesterol derivatives having an additional double bond in any position. 24-dehydrocholesterol is desmosterol. The other most prevalent dehydrocholesterol is the 7-isomer. This compound is a precursor of cholesterol and of vitamin d3. ... (12 Dec 1998) ...
dehydrocholic acid<chemical> A semisynthetic bile acid made from cholic acid. It is used as a cholagogue, hydrocholeretic, diuretic, and as a diagnostic aid. ... Pharmacological action: cholagogues and choleretics, diuretics, gastrointestinal agents. ... Chemical name: Cholan-24-oic acid, 3,7,12-trioxo-, (5beta)- ... (12 Dec 1998) ...
dehydrocholic acid reductase<enzyme> Catalyses the conversion of dehydrocholic acid to 3-hydroxy-7,12-dioxocholanoic acid; isolated from the cytosol of red blood cells ... Registry number: EC 1.1.1.- ... Synonym: dhca reductase ... (26 Jun 1999) ...
dehydrodolichol reductase<enzyme> Nadph-dependent reductase from rat liver microsomes; forms dolichol from dehydrodolichol ... Registry number: EC 1.3.1.- ... (26 Jun 1999) ...
dehydroemetineA synthetic derivative of emetine; used in the treatment of intestinal amoebiasis. ... Dehydroemetine resinate, a derivative of emetine. ... (05 Mar 2000) ...
dehydroepiandrosterone sulfateA precursor of androgens and oestrogen and the most abundant steroid in the circulation. (j gerontol 1993;48(5):b196-200) ... (12 Dec 1998) ...
dehydrogenase<enzyme> Enzyme that oxidizes a substrate by transferring hydrogen to an acceptor that is either NAD/NADP or a flavin enzyme. ... (18 Nov 1997) ...
dehydrogenationThe removal of one or more hydrogen ions or protons from a molecule. This can be done by a dehydrogenase enzyme. ... (09 Oct 1997) ...
dehydroisoandrosteroneSynonym for dehydro-3-epiandrosterone ... 3b-hydroxyandrost-5-ene-17-one;a weakly androgenic steroid secreted largely by the adrenal cortex, but also by the testes; one of the principal components of urinary 17-ketosteroids; a precursor of testosterone. ... Synonym: androstenolone, dehydroisoandrosterone. ... (05 Mar 2000) ...
dehydropeptidase IISynonym for aminoacylase ... <enzyme> An enzyme catalyzing hydrolysis of a wide variety of N-acyl amino acids to the corresponding amino acid and an acid anion. ... Synonym: benzamide, dehydropeptidase II, hippuricase, histozyme. ... (05 Mar 2000) ...
dehydroretinaldehyde3-Dehydroretinaldehyde;dehydroretinol with -CHO instead of -CH2OH at the terminal carbon of the side chain. ... Synonym: retinene-2, vitamin A2 aldehyde. ... (05 Mar 2000) ...
dehydroretinoic acid3-Dehydroretinoic acid;dehydroretinol with -COOH in place of -CH2OH at the terminal carbon of the side chain. ... (05 Mar 2000) ...
dehydroretinol3-Dehydroretinol;retinol with an additional double bond in the 3-4 position of the cyclohexane ring. ... Synonym: vitamin A2. ... (05 Mar 2000) ...
dehydrosqualene desaturase<enzyme> Involved in the synthesis of yellow carotenoid 4,4'-diaponeurosporene in staphylococcus aureus; 448 amino acids, mw 51 kD; amino acid sequence given in first source (orf2); genbank x73889 ... Registry number: EC 1.- ... Synonym: crtn protein, crtn gene product ... (26 Jun 1999) ...
dehydrosqualene synthase<enzyme> Involved in the synthesis of yellow carotenoid 4,4'-diaponeurosporene in staphylococcus aureus; 254 amino acids, mw 30 kD; amino acid sequence given in first source (orf1); genbank x73889 ... Registry number: EC 1.3.- ... Synonym: crtm protein, crtm gene product ... (26 Jun 1999) ...
dehydrosugarsSynonym for anhydrosugars ... Sugars from which one or more molecules of water, other than water of crystallization, have been eliminated. ... Synonym: dehydrosugars. ... (05 Mar 2000) ...
dehydrotestosteroneSynonym for boldenone ... 17b-hydroxyandrosta-1,4-dien-3-one;an anabolic and androgenic agent used in veterinary medicine. ... Synonym: dehydrotestosterone. ... (05 Mar 2000) ...
dehypnotiseTo bring out of the hypnotic state. ... (05 Mar 2000) ...
deiminasesSynonym for iminohydrolases ... Enzymes that hydrolyze imino groups; e.g., arginine deiminase. ... Synonym: deiminases. ... (05 Mar 2000) ...
deinstitutionalizationThe practice of caring for individuals in the community, rather than in an institutional environment with resultant effects on the individual, the individual's family, the community, and the health care system. ... (12 Dec 1998) ...
deionised waterWater purified by passing through ion-exchange columns. ... (05 Mar 2000) ...
deionizationThe production of a mineral-free state by the removal of ions. ... (05 Mar 2000) ...
deiterospinal tractSynonym for vestibulospinal tract ... A somatopically organised fibre bundle originating from the lateral vestibular nucleus (nucleus of Deiters) which descends uncrossed into the anterior funiculus of the spinal cord lateral to the anterior median fissure; the tractus extends throughout the length of the cord, distributing fibres at all levels to t …
DeitersOtto F.K., German anatomist, 1834-1863. ... See: Deiters' cells, Deiters' terminal frames, Deiters' nucleus. ... (05 Mar 2000) ...
deiters nucleusLateral vestibular nucleus lying immediately cranial to the caudal vestibular nucleus and composed of large multipolar nerve cells. Its upper end becomes continuous with the cranial vestibular nucleus. ... (12 Dec 1998) ...
Deiters' cellsSynonym for phalangeal cell ... <pathology> Cells of the organ of Corti (in the inner ear). ... (18 Nov 1997) ...
Deiters' terminal framesPlatelike structures in the organ of Corti uniting the outer phalangeal cells with Hensen's cells. ... (05 Mar 2000) ...
deja vouluA term for a type of disturbance of memory in which the individual believes that his or her present desires are exactly the same as the desires the individual had some time before. ... (05 Mar 2000) ...
deja vuA subjective feeling that an experience which is occurring for the first time has been experienced before. ... (12 Dec 1998) ...
deja vu phenomenonThe mental impression that a new experience (e.g., a scene, sight, sound, or action) has happened before; a common phenomenon in normal persons that may occur more frequently or continuously in certain emotional or organic disorders. Also variously referred to as deja entendu, deja eprouve, deja fait, deja pense, deja raconte, deja vecu, or deja vo …
deject1. To cast down. 'Christ dejected himself even unto the hells.' (Udall) 'Sometimes she dejects her eyes in a seeming civility; and many mistake in her a cunning for a modest look.' (Fuller) ... 2. To cast down the spirits of; to dispirit; to discourage; to dishearten. 'Nor think, to die dejects my lofty mind.' (Pope) ... Origin: L. Dejectus, p. P. Of …
dejectaSynonym: dejection. ... Origin: L. Neut, pl. Of de-jectus, fr. De-jicio, to cast down ... (05 Mar 2000) ...
dejection1. A casting down; depression. ... 2. The act of humbling or abasing one's self. 'Adoration implies submission and dejection.' (Bp. Pearson) ... 3. Lowness of spirits occasioned by grief or misfortune; mental depression; melancholy. 'What besides, Of sorrow, and dejection, and despair, Our frailty can sustain, thy tidings bring.' (Milton) ... 4. A low …
DejerineJoseph J., Paris neurologist, 1849-1917. ... See: Dejerine's disease, Dejerine's hand phenomenon, Dejerine's reflex, Dejerine's sign, Dejerine-Lichtheim phenomenon, Dejerine-Roussy syndrome, Dejerine-Sottas disease, Dejerine-Klumpke syndrome, Landouzy-Dejerine dystrophy. ... (05 Mar 2000) ...
Dejerine-Klumpke palsySynonym for Klumpke palsy ... A type of brachial birth palsy in which there is paralysis of the muscles of the distal forearm and hand (all ulnar innervated muscles, plus more distal radial and median-innervated muscles), due to a lesion of the lower trunk of the brachial plexus, or of the C8 and T1 cervical roots. ... Synonym: Dejerine-Klumpke palsy …
Dejerine-Klumpke syndromeSynonym for Klumpke palsy ... A type of brachial birth palsy in which there is paralysis of the muscles of the distal forearm and hand (all ulnar innervated muscles, plus more distal radial and median-innervated muscles), due to a lesion of the lower trunk of the brachial plexus, or of the C8 and T1 cervical roots. ... Synonym: Dejerine-Klumpke palsy …
Dejerine-Lichtheim phenomenonSynonym for Lichtheim's sign ... <clinical sign> In subcortical aphasia, the patient can indicate by use of the fingers the number of syllables of a word he has in mind but cannot speak. ... Synonym: Dejerine-Lichtheim phenomenon. ... (05 Mar 2000) ...
Dejerine-Roussy syndromeSynonym for thalamic syndrome ... <syndrome> A syndrome produced by infarction of the postero-inferior thalamus causing transient hemiparesis, severe loss of superficial and deep sensation with preservation of crude pain in the hypalgic limbs which frequently have vasomotor or trophic disturbances. ... Synonym: Dejerine-Roussy syndrome. ... (05 …
Dejerine-Sottas diseaseA familial type of demyelinating sensorimotor polyneuropathy that begins in early childhood and is slowly progressive; clinically characterised by foot pain and paresthesias, followed by symmetrical weakness and wasting of the distal limbs; one of the causes of stork legs; patients are wheelchair bound at an early age; peripheral nerves are palpabl …
Dejerine's diseaseSynonym for Dejerine-Sottas disease ... A familial type of demyelinating sensorimotor polyneuropathy that begins in early childhood and is slowly progressive; clinically characterised by foot pain and paresthesias, followed by symmetrical weakness and wasting of the distal limbs; one of the causes of stork legs; patients are wheelchair bound at an e …
Dejerine's hand phenomenonClonic contractions of the flexors of the hand (wrist) on tapping the dorsum of the hand or the volar side of the forearm near the wrist; occurs in normal persons but is exaggerated in pyramidal tract lesions. ... Synonym: Dejerine's reflex. ... (05 Mar 2000) ...
Dejerine's reflexSynonym for Dejerine's hand phenomenon ... Clonic contractions of the flexors of the hand (wrist) on tapping the dorsum of the hand or the volar side of the forearm near the wrist; occurs in normal persons but is exaggerated in pyramidal tract lesions. ... Synonym: Dejerine's reflex. ... (05 Mar 2000) ...
Dejerine's sign<clinical sign> Aggravation of symptoms of radiculitis by the acts of coughing, sneezing, or straining to defecate. ... (05 Mar 2000) ...
deka-See: deca-. ... (05 Mar 2000) ...
Del CastilloE.B., 20th century Argentinian physician. ... See: Del Castillo syndrome, Argonz-Del Castillo syndrome, Ahumada-Del Castillo syndrome. ... (05 Mar 2000) ...
Del Castillo syndromeSynonym for Sertoli-cell-only syndrome ... <syndrome> The absence from the seminiferous tubules of the testes of germinal epithelium, Sertoli cells alone being present; there is sterility due to azoospermia but no other sexual abnormality, Leydig cells are normal, and the output of gonadotrophins in the urine is increased; probably represents …
DelafieldFrancis, U.S. Physician and pathologist, 1841-1915. ... See: Delafield's haematoxylin. ... (05 Mar 2000) ...
Delafield's haematoxylinAn alum type of haematoxylin used in histology; natural ripening takes about 2 months and the solution is good for years. ... (05 Mar 2000) ...
delamination<biology> Formation and separation of laminae or layers; one of the methods by which the various blastodermic layers of the ovum are differentiated. ... This process consists of a concentric splitting of the cells of the blastosphere into an outer layer (epiblast) and an inner layer (hypoblast). By the perforation of the resultant two-walled v …
Delaney clauseA clause of the Food Additive Amendment of the U.S. Federal law specifying that no substance that has been found to induce cancer in any animal may be incorporated into food. ... Origin: James F. Delaney, U.S. Congressman ... (05 Mar 2000) ...
delavirdineSynonym for NNRTI ... A member of a class of compounds, including delavirdine, loviride and nevirapine, that acts to directly combine with and block the action of HIV's reverse transcriptase (see). In contrast, nucleoside analogs block reverse transcriptase by capping the unfinished DNA chain that the enzyme is constructing. NNRTIs have suffered fro …
delay, developmentalBehind schedule in reaching milestones of early childhood development. ... (12 Dec 1998) ...
delayed allergyA type IV allergic reaction; so called because in a sensitised subject the reaction becomes evident hours after contact with the allergen (antigen), reaches its peak after 36 to 48 hours, then recedes slowly. Associated with cell-mediated responses. ... See: delayed reaction. ... Compare: immediate allergy. ... (05 Mar 2000) ...
delayed coma after hypoxiaComa that develops a few days to 3 weeks after an acute hypoxic insult; the latter was usually severe enough to cause an initial bout of coma, which cleared, and was followed by a transient interval of apparent normality. ... Synonym: severe postanoxic encephalopathy. ... (05 Mar 2000) ...
delayed conductionFirst-degree A-V block. ... See: atrioventricular block, intraventricular block, bundle-branch block. ... (05 Mar 2000) ...
delayed dentitionDelayed eruption of the teeth. ... (05 Mar 2000) ...
delayed eruptionA dental eruption pattern which is chronologically late in comparison with the average pattern of dental eruption; eruption of the first tooth occurs at a later age than the average, and the intervals of time between subsequent dental eruption's are longer than the average. ... Drug eruption, any eruption caused by the ingestion, injection, or inhal …
delayed flapA flap raised in its donor area in two or more stages to increase its chances of survival after transfer. ... (05 Mar 2000) ...
delayed gastric emptying<gastroenterology> A condition where there is delayed stomach emptying (due abnormal gastric motility), often see as a complication of diabetes mellitus. ... Risk factors include diabetes, systemic sclerosis, previous vagotomy, previous gastrectomy, viceral neuropathy and the use of anticholinergic medications. ... Symptoms include bloating, na …
delayed graftApplication of a skin graft after waiting several days for healthy granulations to form. ... (05 Mar 2000) ...
delayed hypersensitivity<immunology> Hypersensitivity (increased reaction by the body to a foreign substance such as an antigen or allergen) that does not appear until 24 to 48 hours after the body is exposed to the foreign substance. ... (09 Oct 1997) ...
delayed implantationA phenomenon characterised by an interval ranging from a few weeks to approximately 6 months between the time an ovum is fertilised and subsequent implantation of the zygote, as in the marten and the armadillo. ... (05 Mar 2000) ...
delayed reactionA local or generalised response that begins 24 to 48 hours after exposure to an antigen. ... See: cell-mediated reaction. ... Synonym: contact hypersensitivity, delayed hypersensitivity, late reaction, tuberculin-type hypersensitivity. ... (05 Mar 2000) ...
delayed reaction experimentA method of measuring memory: a stimulus is presented and removed before the organism is permitted to respond to it; the interval during which the stimulus is absent, providing the organism responds correctly, is an indication of the length of memory. ... (05 Mar 2000) ...
delayed rectifier channel<physiology> The potassium selective ion channels of axons, so called because they change the potassium conductance with a delay after a voltage step. ... The name is used to denote any axon like K channel. Various roles for example regulation of pacemaker potentials, generation of bursts of action potentials or generation of long plateaus on …
delayed reflexA reflex in which a little time elapses between stimulus and response. ... See: trace conditioned reflex. ... (05 Mar 2000) ...
delayed sensationA sensation that is not perceived until the lapse of an appreciable interval following the application of the stimulus. ... General sensation, a sensation referred to the body as a whole rather than to any particular part. ... (05 Mar 2000) ...
delayed sutureA suturing of a wound after an interval of days. ... (05 Mar 2000) ...
delayed type hypersensitivitySynonym for delayed hypersensitivity ... <immunology> Hypersensitivity (increased reaction by the body to a foreign substance such as an antigen or allergen) that does not appear until 24 to 48 hours after the body is exposed to the foreign substance. ... (09 Oct 1997) ...
delayed-action preparationsDosage forms of a drug that act over a period of time. ... (12 Dec 1998) ...
DelbetPierre, French surgeon, 1861-1925. ... See: Delbet's sign. ... (05 Mar 2000) ...
Delbet's sign<clinical sign> In a case of aneurysm of a main artery, efficient collateral circulation if the nutrition of the part below is well maintained, despite the fact that the pulse has disappeared. ... (05 Mar 2000) ...
DeLeeJoseph B., U.S. Obstetrician and gynecologist, 1869-1942. ... See: DeLee's manoeuvre. ... (05 Mar 2000) ...
DeLee's manoeuvreSynonym for key-in-lock manoeuvre ... A method by which obstetrical forceps are used to rotate the foetal head. ... Synonym: DeLee's manoeuvre. ... (05 Mar 2000) ...
deletion<genetics> A chromosome abnormality in which part of a single chromosome has been lost. ... (13 Nov 1997) ...
deletion mutation<molecular biology> A mutation in which one or more (sequential) nucleotides is lost by the genome. If the number lost is not divisible by 3 and is in a coding region, the result is a frameshift mutation. ... (18 Nov 1997) ...
Delhi soreSynonym for Oriental sore ... <disease> Skin disease caused by the flagellate protozoan, Leishmania tropica. ... (18 Nov 1997) ...
deliberate releaseGenerally refers to putting a genetically manipulated organism into field trials. ... (14 Nov 1997) ...
delicacyOrigin: From Delicate. ... 1. The state or condition of being delicate; agreeableness to the senses; delightfulness; as, delicacy of flavor, of odour, and the like. 'What choice to choose for delicacy best.' (Milton) ... 2. Nicety or fineness of form, texture, or constitution; softness; elegance; smoothness; tenderness; and hence, frailty or weakness …
delicate1. Addicted to pleasure; luxurious; voluptuous; alluring. 'Dives, for his delicate life, to the devil went.' (Piers Plowman) 'Haarlem is a very delicate town.' (Evelyn) ... 2. Pleasing to the senses; refinedly; hence, adapted to please a nice or cultivated taste; nice; fine; elegant; as, a delicate dish; delicate flavor. ... 3. Slight and shapely; lo …
delicious1. Affording exquisite pleasure; delightful; most sweet or grateful to the senses, especially to the taste; charming. 'Some delicious landscape.' (Coleridge) 'One draught of spring's delicious air.' (Keble) 'Were not his words delicious?' (Tennyson) ... 2. Addicted to pleasure; seeking enjoyment; luxurious; effeminate. 'Others, lastly, of a more del …
delimitationMarking off; putting bounds or limits; preventing the spread of a morbid process in the body or of a disease in the community. ... Origin: L. De-limito, pp. -atus, to bound, fr. Limes, boundary ... (05 Mar 2000) ...
delimiting keratotomy<procedure> Incision in the cornea along the margin of an advancing ulcer. ... (05 Mar 2000) ...
delineation1. The act of representing, portraying, or describing, as by lines, diagrams, sketches, etc.; drawing an outline; as, the delineation of a scene or face; in drawing and engraving, representation by means of lines, as distinguished from representation by means of tints shades; accurate and minute representation, as distinguished from art that is car …
deliquesce<chemistry> To dissolve gradually and become liquid by attracting and absorbing moisture from the air, as certain salts, acids, and alkalies. 'In very moist air crystals of strontites deliquesce.' (Black) ... Origin: L. Deliquescere to melt, dissolve; de- + liquescere to become fluid, melt, fr. Liquere to be fluid. See Liquid. ... Source: Webst …
deliquescenceBecoming damp or liquid by absorption of water from the atmosphere; a property of certain salts, such as CaCl2. ... Origin: L. De-liquesco, to melt or become liquid ... (05 Mar 2000) ...
deliquescent1. Dissolving; liquefying by contact with the air; capable of attracting moisture from the atmosphere and becoming liquid; as, deliquescent salts. ... 2. <botany> Branching so that the stem is lost in branches, as in most deciduous trees. ... Origin: L. Deliquescens, -entis, p. Pr. Of deliquescere: cf. F. Deliquescent. ... Source: Websters Dicti …
deliriaPlural of delirium. ... (05 Mar 2000) ...
deliriousIn a state of delirium. ... (05 Mar 2000) ...
delirious shockSynonym for erethistic shock ... Traumatic or toxic delirium following shock. ... Synonym: delirious shock. ... (05 Mar 2000) ...
delirium<neurology, psychiatry> An acute, reversible organic mental disorder characterised by reduced ability to maintain attention to external stimuli and disorganised thinking as manifested by rambling, irrelevant or incoherent speech. ... There are also a reduced level of consciousness, sensory misperceptions, disturbance of the sleep wakefulness c …
delirium cordisAn obsolete term for atrial fibrillation. ... (05 Mar 2000) ...
delirium mussitansDelirium common in low fevers in which the subject is unconscious, but constantly mutters incoherently. ... (05 Mar 2000) ...
delirium tremensA form of acute organic brain syndrome due to alcohol withdrawal, characterised by sweating, tremor, dyspepsia, restlessness, tachycardia, fever, anxiety, chest pains, mental confusion and hallucinations (often tactile----bugs crawling on me) ... (27 Sep 1997) ...
