Weisinger, R. S, Begg, Denovan P, Denton, Derek A, Findlay, A. L. R, Kennedy, Gerard, Purcell, B, Walker, L. L and Blair-West, J. R (2009) Endocrine and ingestive behavioral responses to fluid deprivation in sheep chronically exposed to ethanol. Physiology and Behavior, 96 (4-5). pp. 637-645. ISSN 0031-9384

Abstract

Endocrine responses to fluid deprivation/restoration and preference for ethanol solution vs. water were assessed in sheep maintained for 5 months on a 10% ethanol solution as their sole source of fluid. Blood pressure, body weight, plasma composition and hormone levels of the alcohol maintained sheep were all within a normal range, except for high plasma concentrations of ANG II and ALDO. During fluid deprivation, AVP concentration increased and fluid-deprived sheep displayed a natriuresis and then a rehydration anti-natriuresis. Sheep did not drink the 10% ethanol solution avidly upon fluid restoration, preferring to drink steadily over the following 24 h; there was an associated increase in blood alcohol concentration (BAC). PRC, ANG II and ALDO all increased throughout the fluid restoration period, whereas plasma AVP and ANP gradually fell. In a separate experiment when water was also supplied to the sheep, they preferred water to 10% ethanol; however, alcohol intake was not eliminated. Overall, this degree of chronic consumption of 10% ethanol solution did not appear to adversely affect physiological mechanisms concerned with body fluid homeostasis after fluid deprivation conditions.

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