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Lasting consistency of cold adaptability in rats reared in cold for many generations

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Title: Lasting consistency of cold adaptability in rats reared in cold for many generations
Authors: MORIYA, Kiyoshi1 Browse this author
YAHATA, Takehiro2 Browse this author
KUROSHIMA, Akihiko3 Browse this author
Authors(alt): 森谷, 絜1
八幡, 剛浩2
黒島, 晨汎3
Keywords: cold-adaptation
many generations in cold
nonshivering thermogenesis
cold tolerance
Issue Date: 1985
Publisher: Physiological Society of Japan
Journal Title: The Japanese Journal of Physiology
Volume: 35
Issue: 3
Start Page: 423
End Page: 442
Publisher DOI: 10.2170/jjphysiol.35.423
Abstract: 1) Wistar rats were successively reared in cold at 5°C from 1969 to 1984. The historical changes observed in these rats were reported. 2) The cold-adapted rats reared in cold for 8 to 11 successive generations (C8-11G) were examined on their cold tolerance and nonshivering thermogenesis. C8-11G rats showed greater nonshivering thermogenesis than that of the warm-adapted control group (W), and rats exposed to cold for periods of 2 to 8 weeks (C). The nonshivering thermogenesis of C8-11G rats was diminished to a similar level to that of W and C rats by administration of a ganglion blocker, of reserpine, or of β-adrenoceptor blocker. 3) The de-adapted rats reared in warm at 25°C for 3 generations after being reared for many generations in cold (DA-3G) showed much more nonshivering thermogenesis as compared to W rats. Cold tolerance of DA-3G rats was at a level of intermediate between that of W and C rats. 4) Brown adipose tissue (BAT) weight of DA-3G rats was similar to that of C rats, while chemical composition of BAT in DA-3G rats differed from that of C and W rats.
Type: article
Appears in Collections:教育学院・教育学研究院 (Graduate School of Education / Faculty of Education) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 森谷 絜

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