THE EFFECT OF SULPIRIDE INDUCED HYPERPROLACTINAEMIA ON GLUCOSE TOLERANCE AND INSULIN SECRETION IN NORMAL SUBJECTS

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Abstract
Blood glucose concentration and insulin secretion expressed by peripheral plasma insulin (IRI) and C‐peptide levels were measured during saline and sulpiride infusion in five normal men. In another experiment the same variables were analysed in six normal males before and during oral sulpiride treatment for 5 days. The i.v. and oral administration of sulpiride resultedin a significant rise in serum prolactin levels. The stimulated serum prolactin concentrations were equivalent to those seen during stress. The sulpiride induced hyperprolactinaemia did not change blood‐glucose, plasma IRI levels, hepatic insulin removal and glucose utilization during basal conditions or after i.v. glucose administration.