Abstract:
:1. The in vitro effects of histamine, some other H1- and H2-receptor agonists and some antagonists were studied on the specific activities and kinetics of rat liver alcohol dehydrogenase (ADH), and cytoplasmic and mitochondrial liver aldehyde dehydrogenase (ALDH). 2. Histamine (H1- and H2-agonist) non-competitively inhibited ADH. There were no changes of cytoplasmic and mitochondrial liver ALDH activities in the presence of 2-(2-aminoethyl) pyridine. 3. Betazole (H2-receptor agonist) produced a competitive inhibition of mitochondrial ALDH but not of ADH or cytoplasmic ALDH. 4. Diphenhydramine (H1-receptor antagonist) non-competitively inhibited ADH at a lower concentration. It stimulated mitochondrial ALDH activity without changes in cytoplasmic ALDH from control values. 5. Burimamide (H2-receptor antagonist) produced a biphasic and dose-dependent stimulation and non-competitive inhibition of ADH and it non-competitively inhibited ALDH in both cytoplasmic and mitochondrial fractions. Metiamide (H2-receptor antagonist) non-competitively inhibited all ADH and ALDH of both liver fraction studied. 6. It is concluded that liver ADH and ALDH activity can be altered by compounds which affect both H1- and H2-histamine receptors and that these compounds may cause an in vivo potentiation and/or reduction of the toxic effect of ethanol.
journal_name
Clin Exp Pharmacol Physioljournal_title
Clinical and experimental pharmacology & physiologyauthors
Messiha FS,Hughes MJdoi
10.1111/j.1440-1681.1979.tb01250.xsubject
Has Abstractpub_date
1979-05-01 00:00:00pages
281-92issue
3eissn
0305-1870issn
1440-1681journal_volume
6pub_type
杂志文章abstract::1. In infants, promethazine has been implicated in the pathogenesis of sleep apnoea, apparent life threatening events (ALTE) and the Sudden Infant Death syndrome (SIDS). The aim of the present study was to investigate, in a neonatal animal, the effects of a commonly used promethazine-containing medication on airway pr...
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