Influence of X-Irradiation Upon Water Consumption by the Rat

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Abstract
Water consumption was measured daily after a) single, total-body exposures of intact and adrenalectomized rats to x-radiation and b) single, partial-body irradiations of intact rats. The intakes of 20% sucrose and of 1% NaCl were measured in hypophysectomized and adrenalectomized, irradiated rats, respectively. Beginning on the first day after exposure there occurred increases and decreases in water consumption which were related to x-ray dosage and to the portion of the body irradiated. The variation in response was very high between individuals. Adrenalectomy abolished the polydipsia which immediately follows irradiation. The possible influence of the pituitary-adrenal system upon the irradiation-induced changes in water consumption is discussed.

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