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      The effect of glucose on growth hormone (GH)-releasing hormone-mediated GH secretion in man.

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          Abstract

          The effect of glucose on GH-releasing hormone (GHRH)-mediated GH secretion was examined in six normal young men. In two paired experiments, the six men drank a 75-g glucose solution or an equal volume of water 30 min before receiving, iv, 100 micrograms of the 44-amino acid form of human pancreatic GHRH (hGHRH-44). One week later, the same men underwent an identical experimental protocol in a cross-over trial. Basal plasma GH concentrations before hGHRH-44 administration were not statistically different in the two experiments [glucose experiment, 2.1 +/- 0.1 (+/- SE) ng/ml; water experiment, 2.6 +/- 0.6 ng/ml]. The mean peak plasma GH level occurred 30 min after hGHRH-44 administration in both experiments. However, the mean GH response was significantly diminished when the men received glucose (8.12 +/- 1.12 ng/ml) compared to that when they received only water (23.70 +/- 8.46 ng/ml; P less than 0.01). Thus, hyperglycemia may exert an inhibitory effect on the plasma GH response to hGHRH-44.

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          Author and article information

          Journal
          J. Clin. Endocrinol. Metab.
          The Journal of clinical endocrinology and metabolism
          The Endocrine Society
          0021-972X
          0021-972X
          Mar 1985
          : 60
          : 3
          Article
          10.1210/jcem-60-3-523
          3919046
          f1f4ab28-40d0-42ab-b66e-165c3df87675
          History

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