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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Hormonal responses to insulin-induced hypoglycemia in man.

Insulin-induced hypoglycemia is a potent stress stimulating ACTH release, but the factors responsible for this ACTH secretion are not known. In this study, several ACTH-stimulating factors, such as CRH, arginine vasopressin (AVP), epinephrine ( E), norepinephrine (NE), and dopamine, in addition to ACTH, cortisol, and glucose, were simultaneously measured in plasma before and 15, 30, 60, 90, and 120 min after iv administration of 0.1 U/kg BW regular insulin to seven normal subjects. Insulin administration resulted in significant rises in the mean plasma ACTH level from 4.6 +/- 1.1 (+/- SEM) to 21.6 +/- 4.8 pmol/L at 30 min (P less than 0.01) and in plasma cortisol from 330 +/- 60 to 720 +/- 50 nmol/L at 60 min (P less than 0.01). These increases were preceded by a 41.0 +/- 1.9% (P less than 0.001) fall in blood glucose levels. The mean plasma CRH level rose significantly from 1.0 +/- 0.1 to 1.2 +/- 0.1 pmol/L (P less than 0.01) at 30 min and remained elevated until 120 min. In addition, concomitant and significant rises in plasma AVP levels (basal, 1.5 +/- 0.01; peak, 4.5 +/- 1.1 pmol/L at 30 min; P less than 0.01), E (basal, less than 50; peak, 640 +/- 130 pmol/L at 30 min; P less than 0.01), and NE (basal, 0.07 +/- 0.01; peak, 0.17 +/- 0.03 nmol/L at 60 min; P less than 0.05), but not dopamine, also occurred. These results suggest that multiple ACTH-releasing factors, such as CRH, AVP, E, and NE, are involved in ACTH secretion induced by insulin-induced hypoglycemia in man.[1]


  1. Hormonal responses to insulin-induced hypoglycemia in man. Watabe, T., Tanaka, K., Kumagae, M., Itoh, S., Takeda, F., Morio, K., Hasegawa, M., Horiuchi, T., Miyabe, S., Shimizu, N. J. Clin. Endocrinol. Metab. (1987) [Pubmed]
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