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Lasting consistency of cold adaptability in rats reared in cold for many generations
| 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 | | de-adaptation | | 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 |
| URI: | http://hdl.handle.net/2115/32837 |
| 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)
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Submitter: 森谷 絜
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