[The renal effects of melatonin in intact and epiphysectomized rats].

Epiphysectomy in adult pubescent Wistar rats causes polyuria and Na uresis at the expense of the increased rate of the glomerular filtration and sodium filtration charge. Melatonin in a dose of 4.31 mkM/100 g of the body weight increased the glomerular filtration of both sodium and water and stimulated the sodium tubular transport in rats with intact epiphysis and did not normalize changes of the nephron excretory activity after epiphysectomy.