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Title:	Postnatal recruitment of brown adipose tissue is induced by the cold stress experienced by the pups. An analysis of mRNA levels for thermogenin and lipoprotein lipase
Authors:	Obregón, María Jesús
Issue Date:	15-Apr-1989
Publisher:	Portland Press Biochemical Society
Citation:	Biochemical Journal 259(2): 341-346 (1989)
Abstract:	In order to investigate the postnatal recruitment process, gene expression in the brown adipose tissue of rat pups was followed during the first 20 h of life. In normal pups, the level of mRNA coding for the uncoupling protein thermogenin increased markedly but gradually within the first 24 h. Lipoprotein lipase and actin mRNA levels were relatively low and remained constant. In pups exposed to thermoneutral temperature (35 degrees C) for the first 12 h after birth, no increase in thermogenin mRNA or lipoprotein lipase mRNA was observed, whereas in pups exposed to 28 degrees C a clear increase in both thermogenin and lipoprotein lipase mRNA levels was found. Actin mRNA levels were not affected by the environmental temperature under these circumstances. It was concluded that the postnatal recruitment in brown adipose tissue is a consequence of the cold stress experienced by the newborn pups. Thus, postnatal recruitment is not ontogenically predetermined.
Description:	6 pages, 2 figures, 1 table.-- et al.
Publisher version (URL):	http://www.biochemj.org/bj/259/0341/bj2590341_browse.htm
URI:	http://hdl.handle.net/10261/23779
ISSN:	0264-6021
Appears in Collections:	(IIBM) Artículos