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 mondofacto - Online Medical Dictionary
Category: Health and Medicine > Medical Dictionary
Date & country: 26/01/2008, UK
Words: 116197


l-gulono-gamma-lactone
Synonym for l-gulonolactone ... The immediate precursor of ascorbic acid in those animals capable of ascorbic acid biosynthesis. ... Synonym: dihydroascorbic acid, l-gulono-gamma-lactone. ... L-gulonolactone oxidase, the enzyme catalyzing the conversion of l-gulonolactone and O2 to H2O2 and l-xylo-hexulonolactone, a precursor of ascorbic acid; absent …

l-gulonolactone
The immediate precursor of ascorbic acid in those animals capable of ascorbic acid biosynthesis. ... Synonym: dihydroascorbic acid, l-gulono-gamma-lactone. ... L-gulonolactone oxidase, the enzyme catalyzing the conversion of l-gulonolactone and O2 to H2O2 and l-xylo-hexulonolactone, a precursor of ascorbic acid; absent in primates. ... (05 Mar 2000)
L-gulonolactone oxidase
<enzyme> Forms ascorbic acid ... Registry number: EC 1.1.3.8 ... Synonym: l-gulonooxidase, l-gulono-gamma-lactone dehydrogenase, l-gulono-gamma-lactone oxidase ... (26 Jun 1999) ...

L-L factor
Synonym for factor xiii ... <chemical> Fibrin stabilizing factor. It is a glycoprotein activated by thrombin in the presence of calcium to form factor xiiia. Factor xiii is found evenly distributed between plasma and platelets. Its function is to stabilise the formation of the fibrin polymer (clot) which culminates the coagulation cascade. ... …

L-lysine oxidase
<enzyme> Converts l-lysine to 2-oxo-6-aminohexanoate ... Registry number: EC 1.4.3.14 ... Synonym: l-lysine-alpha oxidase ... (26 Jun 1999) ...

L-mandelate dehydrogenase
<enzyme> Forms benzoylformate from mandelate ... Registry number: EC 1.1.99.- ... Synonym: mandelate oxidase, dye-linked l-mandelate dehydrogenase, (s)-mandelate dehydrogenase ... (26 Jun 1999) ...

L-methionine gamma-lyase
<enzyme> Pharmacological action: antimetabolites, antineoplastic ... Registry number: EC 4.4.1.11 ... Synonym: l-methionine alpha-deamino gamma-mercaptomethane-lyase, methionine dethiomethylase, l-methioninase, methioninase ... (26 Jun 1999) ...

L-phase variants
Bacterial variant's which do not have rigid cell walls but which may contain varying amounts of cell wall material; they are spherical to coccobacillary in shape and vary in size from small bodies that pass through filters which retain bacteria to bodies that are larger than the bacterial form; they are Gram-negative and resistant to penicillin; so …

L-phenylglycine-AMP ligase
<enzyme> Catalyses l-phenylglycine-dependent ATP-pyrophosphate exchange; partial amino acid sequence given in first source ... Registry number: EC 6.3.2.- ... Synonym: pristinamycin I synthetase 4, pi synthetase 4, snbe protein ... (26 Jun 1999) ...

L-radiation
An x-radiation of slight penetrating power excited by cathode rays (high speed electrons) impinging on a metal anode; the energy of the radiation is a function of the binding energy of the L-shell electrons of the metal anode. ... (05 Mar 2000) ...

l-rhamnose
A methylpentose present in a number of plant glycosides, free in poison sumac, in lipopolysaccharides of Enterobacteriaceae, and in rutinose (a disaccharide). ... Synonym: isodulcit. ... (05 Mar 2000) ...

L-rhamnose isomerase
<enzyme> Specified by structural gene rhaa from E coli; catalyses the conversion of l-rhamnose to l-rhamnulose ... Registry number: EC 5.3.1.14 ... Synonym: l-rhamnose ketol-isomerase ... (26 Jun 1999) ...

L-ribose reductase
<enzyme> Nadph-linked E coli enzyme converts l-ribose to ribitol ... Registry number: EC 1.1.1.- ... (26 Jun 1999) ...

L-ribulosephosphate 4-epimerase
<enzyme> Consider also EC 5.1.3.1,ribulosephosphate 3-epimerase ... Registry number: EC 5.1.3.4 ... Synonym: l-ribulose 5-phosphate 4-epimerase, rpe1 gene product ... (26 Jun 1999) ...

L-S ratio
<abbreviation> Lecithin/sphingomyelin ratio. ... (05 Mar 2000) ...

l-selectin
Cell adhesion molecule and CD antigen that serves as a homing receptor for lymphocytes to lymph node high endothelial venules. ... (12 Dec 1998) ...

l-serine dehydratase
<enzyme> An enzyme of the lyase class that catalyses the dehydration and deamination of l-serine to form pyruvate. ... Chemical name: L-Serine hydro-lyase (deaminating) ... Registry number: EC 4.2.1.13 ... (12 Dec 1998) ...

l-sorbose
A very sweet reducing, but not fermentable, 2-ketohexose obtained from the berries of the mountain ash, Sorbus aucuparia (family Rosaceae), and from sorbitol by fermentation with Acetobacter suboxydans; l-sorbose is epimeric with d-fructose and is used in the manufacture of vitamin C. ... Synonym: sorbin, sorbinose, sorbitose. ... (05 Mar 2000) ...

L-sorbose-1-phosphate reductase
<enzyme> Converts l-sorbose 1-phosphate to d-glucitol 6-phosphate in the presence of NADPH; also converts d-fructose 1-phosphate to d-mannitol 6-phosphate ... Registry number: EC 1.1.1.- ... Synonym: sor e gene product, sor 1-p reductase, sorbose-1-p reductase ... (26 Jun 1999) ...

L-sorbosone dehydrogenase
<enzyme> Converts l-sorbosone to 2-keto-l-gulonic acid. ... Registry number: EC 1.2.99.- ... (26 Jun 1999) ...

l-stercobilinogen
Reduction product of l-urobilinogen, precursor of l-stercobilin in the final stages of bilirubin metabolism; excreted in faeces, wherein it is oxidised to stercobilin. ... See: bilirubinoids. ... (05 Mar 2000) ...

L-tartrate decarboxylase
<enzyme> Nad+ dependent enzyme; catalyses the decarboxylation of l-tartrate in pseudomonas sp. Group ve-2 forming glyceric acid and co2 via enzyme-bound oxaloglycolate ... Registry number: EC 4.1.1.- ... (26 Jun 1999) ...

L-tartrate dehydratase
<enzyme> From E coli; forms oxaloacetate and water; exists in an inactive low-molecular form, which is converted into the active enzyme in the presence of fe(2+) and thiol; related to class I fumarases ... Registry number: EC 4.2.1.32 ... Synonym: (r,r)-tartrate hydro-lyase ... (26 Jun 1999) ...

L-tryptophan 2',3'-oxidase
<enzyme> Specifically catalyses the alpha,beta-dehydrogenation of l- tryptophan derivatives; from chromobacterium violaceum ... Registry number: EC 1.3.99.- ... Synonym: l-tryptophan - oxygen 2',3'-oxidoreductase, l-trp-2',3'-oxidase ... (26 Jun 1999) ...

L-tyrosine ammonia-lyase
<enzyme> Catalyses the conversion of tyrosine to trans-p-coumaric acid and ammonia ... Registry number: EC 4.3.1.- ... Synonym: tyrosine ammonia-lyase ... (26 Jun 1999) ...

L-xylulose reductase
<enzyme> Chemical name: xylitol nadp 4-oxidoreductase (l-xylulose-forming) ... Registry number: EC 1.1.1.10 ... (26 Jun 1999) ...

l-xylulosuria
essential pentosuria ...

L11 methyltransferase
<enzyme> Methylates the ribosomal protein l11 ... Registry number: EC 2.1.1.- ... (26 Jun 1999) ...

L49-sFv-beta-lactamase
<enzyme> A single-chain l49 (igg1) antibody fusion protein for anticancer prodrug activation; retains the antigen binding capability of monovalent l49 as well as the enzymatic activity of beta-lactamase ... Registry number: EC 3.5.2.- ... Synonym: l49-sfv-bl ... (26 Jun 1999) ...

La
Symbol for lanthanum. ... (05 Mar 2000) ...

la belle indifference
A naive, inappropriate lack of emotion or concern for the perceptions by others of one's disability, typically seen in persons with conversion hysteria. ... Origin: Fr. ... (05 Mar 2000) ...

la crosse virus
A species of the genus bunyavirus and member of the california group viruses causing human meningoencephalitis. This is the agent most responsible for california encephalitis, the most prevalent mosquito-borne disease recognised in the united states. ... (12 Dec 1998) ...

Laband, Peter
<person> U.S. Dentist, *1900. ... See: Laband's syndrome. ... (05 Mar 2000) ...

Laband's syndrome
<syndrome> Fibromatosis of the gingivae associated with hypoplasia of the distal phalanges, nail dysplasia, joint hypermotility, and sometimes hepatosplenomegaly; autosomal dominant inheritance. ... (05 Mar 2000) ...

Labbe, Ernest
<person> French physician, 1870-1939. ... See: Labbe's neurocirculatory syndrome. ... (05 Mar 2000) ...

Labbe, Leon
<person> French surgeon, 1832-1916. ... See: Labbe's triangle, Labbe's vein. ... (05 Mar 2000) ...

Labbe's neurocirculatory syndrome
<syndrome> An anxiety neurosis that may occur in Basedow's disease but may be associated with tachycardia and exophthalmos without increase of basal metabolic rate or other evidence of hyperthyroidism. ... (05 Mar 2000) ...

Labbe's triangle
An area bounded below by a horizontal line touching the lower edge of the cartilage of the left ninth rib, laterally by the line of the false ribs, and to the right side by the liver; here the stomach is normally in contact with the abdominal wall. ... (05 Mar 2000) ...

Labbe's vein
Synonym for inferior anastomotic vein ... <anatomy, vein> An inconstant vein that passes from the superficial middle cerebral vein posteriorly over the lateral aspect of the temporal lobe to enter the transverse sinus. ... Synonym: vena anastomotica inferior, Browning's vein, Labbe's vein. ... (05 Mar 2000) ...

label
1. To incorporate into a compound a substance that is readily detected, such as a radionuclide, whereby its metabolism can be followed or its physical distribution detected. ... 2. The substance so incorporated. ... (05 Mar 2000) ...

labelled atom
A radioactive atom, or a stable but rare one, which by its presence in a molecule helps localization or measurement of that molecule. ... Synonym: tagged atom. ... (05 Mar 2000) ...

labelled thyroxine
Synonym for radioactive thyroxine ... Thyroxine in which a radioisotope of iodine (125I or 131I) is incorporated into its molecule; used in experiments tracing the metabolism of thyroxine. ... Synonym: labelled thyroxine, radiolabelled thyroxine, radiothyroxin. ... (05 Mar 2000) ...

labellum
A lip, in orchids, the distinctive median petal that serves as an alighting platform for pollinating insects. ... (09 Oct 1997) ...

labetalol
<chemical> 2-hydroxy-5-(1-hydroxy-2-((1-methyl-3-phenylpropyl)amino) ethyl)benzamide. Blocker of both alpha- and beta-adrenergic receptors that is used as an antihypertensive. ... Pharmacological action: adrenergic alpha-antagonists, adrenergic beta-antagonists, antihypertensive agents, sympatholytics. ... Chemical name: Benzamide, 2-hydroxy-5- …

labetalol hydrochloride
5-[1-Hydroxy-2-[(1-methyl-3-phenylpropyl)amino]ethyl]salicyamide monohydrochloride;an alpha-adrenergic and beta-adrenergic blocking agent used in the treatment of hypertension. ... (05 Mar 2000) ...

labia
Latin for lips. There are two pairs of labia (lips) at the entrance to the vagina. They are the labia majora (the larger outside pair) and the labia minora (the smaller inside pair). Together they form part of the vulva (the female external genitalia). ... (12 Dec 1998) ...

labia majora
The larger (major) outside pair of labia (lips) of the vulva (the female external genitalia). ... (12 Dec 1998) ...

labia minora
The smaller (minor) inside pair of labia (lips) of the vulva (the female external genitalia). ... (12 Dec 1998) ...

labia oris
Synonym for lips of mouth ... Lips of the mouth. ... Synonym: labia oris. ... (05 Mar 2000) ...

labia uteri
See: anterior lip of uterine os, posterior lip of uterine os. ... Vestibular labium of limbus of spiral lamina, the upper, short periosteal extension of the limbus laminae spiralis osseae which provides the central attachment for the tectorial membrane. ... Synonym: labium limbi vestibulare laminae spiralis, lamina dentata, vestibular lip of limbus o …

labial
<dentistry> The tooth surface next to your lips or things mounted on the tooth surfaces next to your lips. ... (08 Jan 1998) ...

labial arch
An orthodontic arch wire that approximates the labial surfaces of the teeth. ... (05 Mar 2000) ...

labial bar
A major connector located labial to the dental arch joining two or more bilateral parts of a mandibular removable partial denture. ... (05 Mar 2000) ...

labial commissure
Junction of upper and lower lip which occurs at corner of mouth. ... See: angle of mouth. ... (05 Mar 2000) ...

labial embrasure
A space existing on the facial aspect of the interproximal contact area between adjacent anterior teeth. ... (05 Mar 2000) ...

labial flange
The portion of the flange of a denture which occupies the labial vestibule of the mouth. ... (05 Mar 2000) ...

labial gingiva
That portion of the gingiva that covers the labial surfaces of the teeth and the alveolar process. ... (05 Mar 2000) ...

labial glands
Mucous glands in the submucous tissue of the lips. ... Synonym: glandulae labiales. ... (05 Mar 2000) ...

labial hernia
Hernia through the canal of Nuck. ... (05 Mar 2000) ...

labial occlusion
Malposition of a tooth in a labial direction, the occlusion as seen from the labial side of the arches. ... (05 Mar 2000) ...

labial splint
An appliance of plastic, metal, or in combination, made to conform to the outer aspect of the dental arch and used in the management of jaw and facial injuries. ... (05 Mar 2000) ...

labial sulcus
A furrow between the developing lip and gum. ... Synonym: labiodental sulcus, lip sulcus, primary labial groove. ... (05 Mar 2000) ...

labial surface
Synonym for vestibular surface of tooth ... The surface of a tooth that faces the buccal or labial mucosa of vestibule of the mouth; opposite to the lingual surface of tooth. ... Synonym: facies vestibularis dentis, facies facialis dentis, buccal surface, facial surface of tooth, facies buccalis, facies labialis, labial surface. ... (05 Mar 2000) ...

labial tubercle
The slight projection on the free edge of the centre of the upper lip at the lower extent of the philtrum. ... Synonym: tuberculum labii superioris, procheilon, prochilon, tubercle of upper lip. ... (05 Mar 2000) ...

labial veins
See: anterior labial veins, posterior labial veins, inferior labial vein, superior labial vein. ... (05 Mar 2000) ...

labial vestibule
That part of the oval vestibule related to the lips. ... (05 Mar 2000) ...

labialism
A form of stammering in which there is confusion in the use of the labial consonants. ... (05 Mar 2000) ...

labially
Toward the lips. ... (05 Mar 2000) ...

labiate
Lipped, as in a calyx or corolla. ... (09 Oct 1997) ...

labile
1. Gliding, moving from point to point over the surface, unstable, fluctuating. ... 2. <chemistry> Chemically unstable. ... Origin: L. Labilis = unstable, from labi = to glide ... (18 Nov 1997) ...

labile affect
The rapid shifts in outward emotional expressions; often associated with organic brain syndromes such as intoxication. ... (05 Mar 2000) ...

labile current
An electrical current applied to the body by means of electrodes that are constantly shifted about. ... (05 Mar 2000) ...

labile elements
Tissue cells, as of epithelium, connective tissue, etc., that continue to multiply by mitosis during the life of the individual. ... (05 Mar 2000) ...

labile factor
Synonym for factor v ... <chemical> Heat- and storage-labile plasma glycoprotein which accelerates the conversion of prothrombin to thrombin in blood coagulation. Factor v accomplishes this by forming a complex with factor xa, phospholipid, and calcium (prothrombinase complex). Deficiency of factor v leads to owren's disease. ... Chemical name: …

labile hypertension
Frequently changing levels of elevated blood pressure. ... (05 Mar 2000) ...

labile pulse
Frequent changes in pulse rate. ... (05 Mar 2000) ...

lability
The state of being labile. ... (05 Mar 2000) ...

labio-
The lips. ... See: cheilo-. ... Origin: L. Labium, lip ... (05 Mar 2000) ...

labiocervical
Relating to a lip and a neck; specifically, to the labial or buccal surface of the neck of a tooth. ... Origin: Labio-+ L. Cervix, neck ... (05 Mar 2000) ...

labiochorea
A chronic spasm of the lips, interfering with speech. ... Origin: Labio-+ G. Choreia, dance ... (05 Mar 2000) ...

labioclination
Inclination of position more toward the lips than is normal; said of a tooth. ... (05 Mar 2000) ...

labiodental
Relating to the lips and the teeth; denoting certain letters the sound of which is formed by both lips and teeth. ... Origin: Labio-+ L. Dens, tooth ... (05 Mar 2000) ...

labiodental sulcus
Synonym for labial sulcus ... A furrow between the developing lip and gum. ... Synonym: labiodental sulcus, lip sulcus, primary labial groove. ... (05 Mar 2000) ...

labiogingival
Relating to the point of junction of the labial border and the gingival line on the distal or mesial surface of an incisor tooth. ... (05 Mar 2000) ...

labiogingival lamina
A band of ectodermal epithelial cells growing into the mesenchyme of the embryonic jaws between the developing lip and the growing gingival elevation; it later opens to form the labiogingival groove. ... (05 Mar 2000) ...

labioglossolaryngeal
Relating to the lips, tongue, and larynx; describing bulbar paralysis in which these parts are involved. ... Origin: Labio-+ G. Glossa, tongue, + larynx ... (05 Mar 2000) ...

labioglossopharyngeal
Relating to the lips, tongue, and pharynx; describing bulbar paralysis involving these parts. ... Origin: Labio-+ G. Glossa, tongue, + pharynx ... (05 Mar 2000) ...

labiograph
An instrument for recording the movements of the lips in speaking. ... Origin: Labio-+ G. Grapho, to record ... (05 Mar 2000) ...

labiolingual appliance
An orthodontic appliance that consists of a maxillary labial arch wire and a mandibular lingual arch wire. ... (05 Mar 2000) ...

labiolingual plane
A plane parallel to the labial and lingual surfaces of the teeth. ... (05 Mar 2000) ...

labiomental
Relating to the lower lip and the chin. ... Origin: Labio-+ L. Mentum, chin ... (05 Mar 2000) ...

labionasal
1. Relating to the upper lip and the nose, or to both lips and the nose. ... 2. Denoting a letter which is both labial and nasal in the production of its sound. ... (05 Mar 2000) ...

labiopalatine
Relating to the lips and the palate. ... (05 Mar 2000) ...

labioplacement
Positioning (e.g., of a tooth) more toward the lips than normal. ... (05 Mar 2000) ...

labioplasty
Plastic surgery of a lip. ... Origin: Labio-+ G. Plastos, formed ... (05 Mar 2000) ...

labioscrotal folds
Lateral fold's at either side of the embryonic cloacal membrane that develop into either the scrotum or the labia majora. ... (05 Mar 2000) ...

labioscrotal swellings
Synonym for genital swellings ... Paired primordial elevations flanking the genital tubercle and the urogenital orifice of the embryo; they develop into the labioscrotal folds, which become the labia majora in the female and unite to form the scrotal pouch of the male. ... Synonym: labioscrotal swellings. ... Hunger swelling, starvation oedema caused …

labioversion
Malposition of an anterior tooth from the normal line of occlusion toward the lips. ... (05 Mar 2000) ...

labitome
A forceps with sharp blades. ... Synonym: cutting forceps. ... Origin: G. Labis, pincers, + tome, an incision ... (05 Mar 2000) ...

labium
Origin: L. ... 1. A lip, or liplike organ. ... 2. The lip of an organ pipe. ... 3. <anatomy> The folds of integument at the opening of the vulva. ... 4. <zoology> The organ of insects which covers the mouth beneath, and serves as an under lip. It consists of the second pair of maxillae, usually closely united in the middle line, but bearing …