| atropine dehydrase | <enzyme> Proposed mechanism for conversion of atropine or scopolamine to apoatropine or aposcopolamine via a mechanism using hydroxysteroid sulfotransferase by guinea pig liver Registry number: EC 2.8.2.- Synonym: scopolamine dehydrase (26 Jun 1999) |
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| atropine | <drug> A toxic alkaloid extracted from belladonna and other members of thenightshade family, it is typically used to dilate the eye and to stopmuscular spasms. Pharmacologic action: Parasympatholytic. Competitive blockade of acetylcholine at muscarinic receptors. Increases sinus node automaticity and AV conduction. Uses: Treat bradycardia, asystole, and AV block Dose: 0.5 - 1.0 mg for bradycardia every 3 - 5 min to a total dose of 0.04 mg/kg. Doses smaller than 0.5 mg can cause a paradoxical bradycardia due to sympathomimetic effects Typically 3 mg is adequate to completely block vagal effects Atropine is well absorbed via endotracheal route - administer 1-2 mg diluted in 10 mL sterile water or normal saline. Potential complications: 1. Tachyarrhythmias 2. Exacerbation of myocardial ischemia 3. Low dose may cause paradoxical bradycardia 4. Dry mouth, urinary retention, flushed and hot skin 5. Crosses blood-brain barrier which can cause delirium Note: The denervated heart will not respond to atropine. (15 Mar 2000) |
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| atropine derivatives | Analogs and derivatives of atropine. (12 Dec 1998) |
| atropine methonitrate | The methylnitrate of atropine, with the same actions and uses as atropine, but less lipid-soluble and hence with fewer central nervous system effects; a quaternary compound. (05 Mar 2000) |
| atropine methylbromide | A quaternary derivative of atropine that is less lipid soluble and hence produces fewer central nervous system actions; a cycloplegic. Synonym: atropine methylbromide. (05 Mar 2000) |
| atropine sulfate | An anticholinergic; a widely used soluble salt of atropine. (05 Mar 2000) |
| atropine test | If an injection of atropine relieves bradycardia, the condition is due to action of the vagus; if it does not, the condition may be due to an affection of the heart itself. Synonym: atropine test. (05 Mar 2000) |
| beta-hydroxyacyl-(acyl-carrier-protein)dehydrase | <enzyme> In fatty acid synthesis; specific for acyl carrier protein; cannot use acyl CoA; see also faba gene product Registry number: EC 4.2.1.- Synonym: beta-ohacyl-acp dehydrase, beta-hydroxyacyl-acyl carrier protein dehydratase, fabz gene product (26 Jun 1999) |
| carbamoylaspartate dehydrase | dihydro-orotase |
| CDP-4-keto-6-deoxy-D-glucose-3-dehydrase | <enzyme> A pyridoxamine 5'-phosphate (pmp) dependent enzyme which catalyses the deoxygenation step in 3,6-dideoxyhexose synthesis, in which the c-3 hydroxyl group of the cdp-4-keto-6-deoxy-d-hexose intermediate is replaced by a hydrogen atom; isolated from yersinia pseudotuberculosis Registry number: EC 4.2.1.- Synonym: ckdg dehydrase, cytidine diphosphate-4-keto-6-deoxy-d-glucose-3-dehydrase, cdp-6-deoxy-l-threo-d-glycero-4-hexulose 3-dehydrase (26 Jun 1999) |
| CDP-6-deoxy-4-hexulose-3-dehydrase reductase | <enzyme> Nadh-dependent enzyme that transfer of electrons to cdp-6-deoxy-l-threo-d-glycero-4-hexulose 3-dehydrase, which catalyses reduction of cdp-6-deoxy-delta(3,4)-glucoseen to cdp-4-keto-3,6-dideoxy-d-glucose Registry number: EC 1.3.1.- Synonym: ckdg dehydrase reductase, cdp--6-deoxy-l-threo-d-glycero-4-hexulose-3-dehydrase reductase (26 Jun 1999) |
| serine dehydrase | <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) |
| short-chain beta-hydroxyacyl-CoA dehydrase | <enzyme> Forms trans-2-enoyl-CoA; maximal activity with trans-2-hexenoyl-CoA, followed by crotonyl-CoA; not the same as EC 4.2.1.17 Registry number: EC 4.2.1.- Synonym: beta-hydroxybutyryl-CoA dehydrase, short-chain beta-hydroxyacyl-coenzyme a dehydrase (26 Jun 1999) |
| dehydrase | Former name for dehydratase. (05 Mar 2000) |