Ontogeny of pituitary growth hormone and growth hormone mRNA in the chicken.

Autor: McCann-Levorse LM; Department of Animal Sciences, Rutgers, State University of New Jersey, New Brunswick 08903., Radecki SV, Donoghue DJ, Malamed S, Foster DN, Scanes CG
Jazyk: angličtina
Zdroj: Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine (New York, N.Y.) [Proc Soc Exp Biol Med] 1993 Jan; Vol. 202 (1), pp. 109-13.
DOI: 10.3181/00379727-202-43519
Abstrakt: The changes in pituitary growth hormone (GH) mRNA levels have been determined by Northern blot analysis and laser densitometry during embryonic development and posthatch growth of white Leghorn cockerels. Pituitary GH mRNA levels were observed to progressively increase between 18 days of embryonic development to a maximum at 4 weeks of age (posthatch). Subsequently, pituitary GH mRNA levels declined between 4 and 8 weeks of age, and between 12 weeks of age and adulthood. Pituitary GH contents showed increases during embryonic development and posthatch growth that paralleled the rise in GH mRNA. The decline in pituitary GH mRNA levels between 4 weeks of age and adulthood occurs when GH secretion has been observed previously to decline.
Databáze: MEDLINE