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Am J Physiol Regul Integr Comp Physiol 244: R78-R83, 1983;
0363-6119/83 $5.00
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AJP - Regulatory, Integrative and Comparative Physiology, Vol 244, Issue 1 78-R83, Copyright © 1983 by American Physiological Society

ARTICLES

Sodium retention and salt appetite following deoxycorticosterone in hamsters

D. A. Fitts, O. O. Yang, E. S. Corp and J. B. Simpson

Previous research suggests that hamsters 1) fail to retain sodium after mineralocorticoid injections, 2) retain sodium after adrenalectomy equal to controls, and 3) do not develop salt appetite after mineralocorticoid or adrenalectomy. The present studies demonstrate sodium retention, body weight gain, hypernatremia, plasma volume expansion, and reduced fecal sodium excretion after daily injections of deoxycorticosterone acetate (DOCA). Salt appetite appeared after the 3rd and 4th days. Adrenalectomy caused reductions of sodium balance, plasma volume, and food intake, which were reversed by DOCA administration. Mineralocorticoids therefore represent one control of sodium metabolism in hamsters.




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