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The Effect of Liver Microsomal Enzyme Inducing and Inhibiting Drugs on Insulin Mediated Glucose Metabolism in Man

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Specialty Pharmacology
Date 1986 Jan 1
PMID 3511933
Citations 5
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Abstract

The effects of hepatic microsomal enzyme inducing (phenobarbitone and flumecinol), and inhibiting (cimetidine) drugs, and placebo treatment on insulin mediated glucose metabolism (M) were investigated in 29 healthy volunteers. Phenobarbitone (50 mg for 10 days) increased M (30%), metabolic clearance rate of glucose (MCRg), and antipyrine clearance rate (33%). Fasting immunoreactive insulin (IRI) decreased while fasting blood glucose (BG) remained unaltered. Flumecinol, another inducer, tested in two doses (200 mg and 600 mg for 6 days), did not alter glucose or antipyrine metabolism. Fasting IRI reduced on treatment with 600 mg of flumecinol, but not with the smaller dose. Cimetidine (600 mg for 6 days) decreased M (19.5%), MCRg (26%), and antipyrine clearance rate (20%). The placebo did not alter glucose or antipyrine metabolism. The results indicate that the insulin mediated glucose disposal rate can be altered by drugs influencing hepatic microsomal enzyme activity.

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