[Evolution of plasma concentration of gonadotropins and corticosterone during the growth of the male rat (author's transl)].

Plasma LH, FSH and corticosterone were determined between the 15th and 90th day of life, in normal male Rat. Plasma gonadotropins and corticosterone at basal conditions or after psychic aggression increased from the 15th to the 40th or 45th day of life; then all hormones decreased to adult age. The development of plasma gonadotropins and corticosterone are carried out in a parallel manner during the period studied. It was thought that perhaps the elevation of gonadotropins secretion might have stimulated the adrenals.