[The effect of vasotocin and mesotocin on the suprarenal gland of the frog Rana temporaria in vivo and in vitro].

Biochemical and morphometric analyses have been made of the effects of nonapeptide neurohormones, vasotocin and mesotocin, on the chromaffin tissue of the adrenal gland of the frog, both in vivo and in vitro experiments. It was shown that vasotocin exerts stimulating effect on the suprarenal gland whereas mesotocin inhibits the latter. In vitro experiments revealed that adrenalin may abolish the effect of nonapeptides on the suprarenal gland.

[The effect of vasotocin, mesotocin and adrenaline on the interrenal gland in the frog Rana temporaria under in-vitro conditions].

Morphometric studies indicate that vasotocin increases the activity of the adrenal gland in frogs, whereas mesotocin and epinephrine do not essentially affect it. Combination of epinephrine with nonapeptides in cultural medium showed that the former may abolish the effect of vasotocin on the adrenal gland.