title: Effects of halothane on glucose-stimulated insulin secretion and glucose oxidation in isolated rat pancreatic islets.
abstract: Previous studies have shown that halothane inhibits glucose-stimulated insulin secretion. This study was designed to determine whether the mechanism of inhibition involves a reduction in glucose metabolism. The effects of halothane on glucose (16.7 mM)-stimulated insulin secretion and glucose oxidation were studied in isolated rat pancreatic islets. Halothane, 0.11 mM (0.5 MAC), 0.22 mM (1.0 MAC), and 0.33 mM (1.5 MAC), inhibited glucose-stimulated insulin release in a dose-related manner by 5.2 per cent (NS), 21.0 per cent (P < 0.05), and 32.6 per cent (P < 0.01), respectively. At the 0.33 mM (1.5 MAC) concentration, halothane did not significantly inhibit the oxidation of 6-14C-glucose to 14CO2, although higher concentrations of halothane did result in significant inhibition. The data suggest that halothane's inhibitory effect on glucose-stimulated insulin secretion is not due to interference with glucose oxidation.
mesh_terms: D000769:Anesthesia, Inhalation; D000818:Animals; D005947:Glucose / Q000378:metabolism / Q000494:pharmacology*; D006221:Halothane / Q000494:pharmacology*; D007328:Insulin / Q000378:metabolism*; D000078790:Insulin Secretion; D007515:Islets of Langerhans / Q000187:drug effects / Q000378:metabolism*; D010084:Oxidation-Reduction; D051381:Rats
chemical_list: D007328:Insulin; D005947:Glucose; D006221:Halothane