The Influence of Environmental Temperature on the Level of Plasma Antidiuhetic Substances in the Rat

Abstract

'rhe level of plasma antidiuretic substances (ADI:-i) was found to be doubled when rats were exposed continuously to an atmosphere of !l5°F (:35°C) and :30 mm Hg water vapour pressure for 28 days, and it, was reduccd to half with continuous exposure to cold (43°F (G·5°e)). When recluction in body woight accompanited IlEmting, the antidiuretie potency of tho blood was markedly increased.