Summary
To investigate the rôle of glucagon in the development of diabetes mellitus, spontaneously diabetic non-obese mice were studied before (group 1) and after the onset of diabetes mellitus (group 2). In group 1, fasting blood glucose and insulin in plasma and pancreas did not differ significantly, while plasma glucagon was elevated (48.9±10.4 versus control 18.6±6.0pmol/l). In group 2, the insulin content of plasma and the pancreas were markedly reduced, whereas plasma glucagon was elevated (180.9±59.1 pmol/l). When diabetic mice were treated with insulin for 4 weeks (group 3), plasma glucagon was markedly reduced compared with that of group 2 (30.3±9.0 pmol/l). In group 1, glucagon and glucagon-like immunoreactivity of the intestine were reduced. The glucagon content of the intestine was elevated in group 2. Group 3 elicited increased contents of gastric glucagon as well as intestinal glucagon-like immunoreactivity. We conclude that, in addition to insulin deficiency, hypersecretion of glucagon might contribute to the development and clinical course of diabetes mellitus in the non-obese diabetic mouse.
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Ohneda, A., Kobayashi, T., Nihei, J. et al. Insulin and glucagon in spontaneously diabetic non-obese mice. Diabetologia 27, 460–463 (1984). https://doi.org/10.1007/BF00273911
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DOI: https://doi.org/10.1007/BF00273911