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Thermoregulatory Responses in Normal and Cold Acclimated Rabbits
https://doi.org/10.18999/nagjms.36.2-4.79
https://doi.org/10.18999/nagjms.36.2-4.7919cf33ea-965d-483e-b2d2-ac576ed0ef3f
名前 / ファイル | ライセンス | アクション |
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v36n24p79_89.pdf (752.3 kB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2013-01-18 | |||||
タイトル | ||||||
タイトル | Thermoregulatory Responses in Normal and Cold Acclimated Rabbits | |||||
言語 | en | |||||
著者 |
NAGASAKA, TETSUO
× NAGASAKA, TETSUO |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
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内容記述 | Metabolic rate (M), tissue conductance (k), rectal (Tre) and mean skin temperature (Ts) were measured in normal (CONT) and cold acclimated (CA) rabbits after steady state for a given ambient temperature (Tα) from 5 to 35°C. Below Tα=15°C, Tre of CONT decreased considerably, while Tre of CA was maintained within a normal range. The rate of change in Ts for each degree change in Tα (below Tα=15°C) was smaller in CA. M, always higher in CA than in CONT at any Tα, increased more than twice the basal value (2.54 W/kg±0.06 SE for CONT and 2.85 W/kg±0.07 SE for CA at Tα=25°C) during cold exposure (Tα= 5°C). Though k was relatively constant at Tα=25-5°C, it increased considerably at Tα=35°C. The value for CA was higher than that for CONT at any Tα. Perfusion of norepinephrine (NE, 3 μg/kg·min for 30-min) in curarized rabbits caused bradycardia, which was more conspicuous in CONT. NE caused an increase in M (ca. 18%) in CA without any change in CONT (p<0.01). The increase in M was not limited to the duration of NE perfusion. NE did not change body temperatures except for slight rise of Ts in CA. During cold exposure, body temperatures decreased continuously in the curarized rabbits. M increased slightly during the initial 30-40 min of cold exposure in CA. The results confirmed that the rabbit acclimates to cold by enhancing nonshivering thermogenesis mediated by NE, as well as by improving insulation. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
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言語 | en | |||||
出版者 | Nagoya University School of Medicine | |||||
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言語 | eng | |||||
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資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
ID登録 | ||||||
ID登録 | 10.18999/nagjms.36.2-4.79 | |||||
ID登録タイプ | JaLC | |||||
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関連タイプ | isVersionOf | |||||
識別子タイプ | URI | |||||
関連識別子 | http://www.med.nagoya-u.ac.jp/medlib/nagoya_j_med_sci/3624/3624.html | |||||
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収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0027-7622 | |||||
ISSN(Online) | ||||||
収録物識別子タイプ | EISSN | |||||
収録物識別子 | 2186-3326 | |||||
書誌情報 |
en : Nagoya Journal of Medical Science 巻 36, 号 2-4, p. 79-89, 発行日 1974-03 |
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著者版フラグ | ||||||
値 | publisher | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/17292 | |||||
識別子タイプ | HDL |