Summary
Growth hormone injected intravenously in the rat elicited a 6-fold spike change in immunoreactive insulin with little variation in glucose. Subcutaneous administration of growth hormone for 4 days augmented by 56% the insulin-secretory response to glucose of isolated islets from hypophysectomised rats but not the response of control rat islets. When islets were cultured in the presence of growth hormone, the glucose-induced insulin release was increased by 35% in batch incubations of islets from both normal and hypophysectomised rats and by 70–110% in perifused islets. Thus the capacity for stimulated release of insulin is limited by hypophysectomy, and growth hormone is capable of directly influencing the secretory function of the β- cell.
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Pierluissi, J., Pierluissi, R. & Ashcroft, S.J.H. Effects of growth hormone on insulin release in the rat. Diabetologia 19, 391–396 (1980). https://doi.org/10.1007/BF00280526
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DOI: https://doi.org/10.1007/BF00280526