Catecholamines and exercise-induced glucagon and fatty acid mobilization in the rat
- 1 August 1975
- journal article
- research article
- Published by American Physiological Society in American Journal of Physiology-Legacy Content
- Vol. 229 (2) , 376-383
- https://doi.org/10.1152/ajplegacy.1975.229.2.376
Abstract
Physical exercise in rats provokes an increase in plasma glucagon and free fatty acid concentrations. The persistence of exercise-induced glucagon stimulation in adrenodemedullated animals and conversely, its inhibition by immunosympathectomy, (-)-ropranolol, and pindolol substantiate the conclusion that stimulation of the alpha2 cells in exercise involves sympathetic stimulation of the beta-adrenergic receptors. The reduction of free fatty acid mobilization by immunosympathectomy and (-)-propranolol and its persistence after adrenodemedullation suggest that it is similarly mediated, at least in part, by adipose cell beta-sympathetic receptors.Keywords
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