| EDRF | <biochemistry> This compound is produced from L arginine by the enzyme nitric oxide synthase. Acts as a potent vasorelaxant via elevation of intracellular cGMP in vascular smooth muscle. Synthesis of nitric oxide is not confined to endothelium, isoforms of nitric oxide synthase are also found in brain, neutrophils and platelets. Synonym: endothelium derived relaxation factor. Acronym: NO (29 Dec 1997) |
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| Edridge-Green lamp | A lantern used to test recognition of coloured signals; it displays a single light with colour filters in rotating disks that can be modified to simulate conditions of weather and atmosphere. This test for colour blindness was officially adopted in Great Britain in 1915 in place of the Holmgren wool test, but is now seldom used. (05 Mar 2000) |
| Edridge-Green, Frederick | <person> English ophthalmologist, 1863-1953. See: Edridge-Green lamp. (05 Mar 2000) |
| edriophthalma | <zoology> A group of Crustacea in which the eyes are without stalks; the Arthrostraca. Alternative forms: Edriophthalmata. Origin: NL, fr. Gr. Steadfast + the eye. Source: Websters Dictionary (01 Mar 1998) |
| edriophthalmous | <zoology> Pertaining to the Edriophthalma. Source: Websters Dictionary (01 Mar 1998) |
| edrophonium | <chemical> A rapid-onset, short-acting cholinesterase inhibitor used in cardiac arrhythmias and in the diagnosis of myasthenia gravis. It has also been used as an antidote to curare principles. Pharmacological action: anti-arrhythmia agents, antidotes, cholinesterase inhibitor, parasympathomimetic. Chemical name: Benzenaminium, N-ethyl-3-hydroxy-N,N-dimethyl- (12 Dec 1998) |
| edrophonium chloride | Dimethylethyl (3-hydroxyphenyl)ammonium chloride;a competitive antagonist of skeletal muscle relaxants (curare derivatives and gallamine triethiodide) and an anticholinesterase, used as an antidote for curariform drugs, as a diagnostic agent in myasthenia gravis, and in myasthenic crisis. (05 Mar 2000) |
| edrophonium test | <investigation> A test used to measure the amount of antibodies to acetylcholine receptors on nerve endings. This is a diagnostic test for myasthenia gravis. A normal value is no antibodies in the bloodstream. Amyotrophic lateral sclerosis patients may also demonstrate an abnormal edrophonium test result. (24 Mar 1998) |