Prolonged suppression of insulin release by insulin-induced hypoglycemia: demonstration by C-peptide assay

Hormone and Metabolic Research = Hormon- Und Stoffwechselforschung = Hormones Et Métabolisme
D L HorwitzN Yanaihara

Abstract

Pancreatic beta cells secrete the proinsulin connecting peptide (C-peptide) and insulin on an equimolar basis. The C-peptide can thus be used as an indicator of endogenous insulin secretion in the presence of exogenously administered insulin. Using this approach, we have shown suppression of endogenous insulin release in healthy subjects during hypoglycemia induced by intravenous infusion of porcine insulin. Moreover, the suppression persists after the plasma glucose returns to fasting levels, suggesting that the recovery of beta cells from the effects of hypoglycemia is not immediate.

Citations

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