[The effect of dehydration on the functional activity of the interrenal gland in adenohypophysectomized Rana catesbeiana frogs. A preliminary report].
A significant increase of the content of corticosterone in the blood collected from intravenous cannula or by intracardiac punction has been detected using radioimmunoassay in non-operated and adenohypophysectomized frogs Rana catesbeiana subjected to dehydration in 6.2% mannitol solution during 24 hours. The osmolality of the blood plasma of these animals also increases although less significantly than the growth of plasma corticosterone content. There is a tendency to substantial increase of plasma arginine-vasotocin level prior to the growth of corticosterone level, already after 6 hours of dehydration. Based on the present results and literature data, it is suggested that in adenohypophysectomized frogs lacking endogenous ACTH just the increase of blood arginine-vasotocin level results in a substantial activation of corticosteroid-producing cells of the interrenal gland and in the growth of plasma content of corticosterone.
Belen'kiĭ
M a
Ma
Bountzioukas
S
S
Gonzales
G
G
Ko
D
D
Lederis
K
K
Polenov
A L
AL
D000818:Animals; D003345:Corticosterone / Q000097:blood; D003681:Dehydration / Q000097:blood / Q000503:physiopathology*; D007016:Hypophysectomy; D007401:Interrenal Gland / Q000503:physiopathology*; D008297:Male; D009994:Osmolar Concentration; D010903:Pituitary Gland, Anterior / Q000502:physiology*; D011892:Rana catesbeiana / Q000502:physiology*; D011894:Rana pipiens; D013997:Time Factors; D014668:Vasotocin / Q000097:blood
D014668:Vasotocin; D003345:Corticosterone
Vliianie degidratatsii na funktsional'nuiu aktivnost' interrenalovoĭ zhelezy u adenogipofizéktomirovannykh liagushek Rana catesbeiana. Predvaritel'noe soobshchenie.