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Journal of Clinical Endocrinology & Metabolism, Vol 52, 859-862, Copyright © 1981 by Endocrine Society

ARTICLES

Growth hormone response to thyrotropin-releasing hormone in diabetes

A Dasmahapatra, E Urdanivia and MP Cohen

The effect of TRH on GH secretion was assessed in 13 insulin-dependent diabetics. PRL and TSH responses to TRH were also determined. Glycosylated hemoglobin levels and serial fasting glucose concentrations indicated that all but 1 of the patients had a period of poor diabetic control for several months before the study. Peak PRL and TSH levels after TRH injection in these diabetic patients did not differ significantly from values observed in nondiabetic individuals. Six of the patients responded to TRH with a significant rise in GH levels; basal GH concentrations were also elevated in these patients. Five of the 6 responders and none of the nonresponders had proliferative diabetic retinopathy. The results suggest that diabetics with elevated basal GH levels hyperrespond to TRH, and that nonspecific secretion of GH in response to TRH occurs in some patients with proliferative diabetic retinopathy. Chronic hyperglycemia does not appear to be the critical factor in determining this response.




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Copyright © 1981 by The Endocrine Society