Neurohypophysial hormones of the 1-month-old bovine fetus: absence of vasotocin during mammal development.
The neurohypophysial hormones of the 1-month-old bovine fetus have been identified by their positions in ion-exchange chromatography and their retention times in high-pressure reverse-phase partition chromatography. Arginine vasopressin and oxytocin have been recognized. The molar ratio vasopressin/oxytocin in neurohypophysis is about 6 in the 1-month-old fetus compared with 4 in the 3-month-old fetus, 2.7 in the 7-month-old fetus and 1 in the adult. Vasotocin is virtually absent even in the early fetus (less than 0.1% of arginine vasopressin). The occurrence of a vasotocin gene expressed in the fetus but silent in the adult appears unlikely.
Rouille
Y
Y
Laboratory of Biological Chemistry, University of Paris VI, France.
Levy
B
B
Chauvet
M T
MT
Chauvet
J
J
Acher
R
R
D000818:Animals; D002417:Cattle; D002851:Chromatography, High Pressure Liquid; D005314:Embryonic and Fetal Development; D010904:Pituitary Gland, Posterior / Q000196:embryology*; D010909:Pituitary Hormones, Posterior / Q000032:analysis*; D014668:Vasotocin / Q000032:analysis*
D010909:Pituitary Hormones, Posterior; D014668:Vasotocin