[Diuretic and natriuretic functions of the kidneys of the rat during adaptation to cold].

In cold acclimated male albino rats, in the cold the diuresis, glomerular filtration rate and water reabsorption were increased. These values did not differ from the control those. The kidney cold-induced diuresis was due to the increase of the glomerular filtration rate. The kidney excretion of the sodium was decreased during the cold adaptation both in the cold and in the heat. The decrease of the sodium excretion seemed to be due to the increase of the Na+-pump capacity in the kidneys.