PMID: 1175672Jul 29, 1975Paper

Effects of burn injury on insulin secretion and on sensitivity to insulin in the rat in vivo

European Journal of Clinical Investigation
K N Frayn

Abstract

Both insulin resistance and impairment of insulin secretion are know to occur in man after injury. The relative importance of these effects was studied in rats 2 h after a non-lethal 20 percent dorsal scald. No impairment of insulin secretion was found after this injury. Concentrations of both blood glucose and plasma insulin were elevated in scalded rats. Scalded rats responded to intravenous glucose injection (1-0 g/kg) with a further rise in plasma insulin concentration, which remained normal for the prevailing blood glucose concentration. However, marked impairment of glucose tolerance was observed, indicating the presence of insulin resistance. After intravenous insulin injection (1-0 U/kg) the initial rate coefficient for fall of blood glucose concentration was significantly lower (p less than 0-02) in scalded (mean 3-9 percent min.(-1) than in control rats (mean 6-3 percent min.(-1). The minimum in blood glucose concentration after insulin injection was reached at 10 min. in control rats, but not until 60 min. after injection in scalded rats. This difference was due to a delay in compensation for the hypoglycaemia in the scalded rats, since the rate of disappearance of insulin measured by injection of a tracer of 125I-la...Continue Reading

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