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暑熱順化ウサギの体温調節反応パターンの解析に関する試み


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Title: 暑熱順化ウサギの体温調節反応パターンの解析に関する試み
Other Titles: A New Approach for Analysing the Patterns of Thermoregulatory Responses in Heat Acclimated Rabbits
Authors: 藤原, 真理子 / 大渡, 伸 / 小坂, 光男 / Ye-WIN
Authors (alternative): Fujiwara, Mariko / Ohwatari, Nobu / Kosaka, Mitsuo / Ye-Win
Issue Date: 30-Sep-1985
Publisher: 長崎大学熱帯医学研究所 / Institute of Tropical Medicine, Nagasaki University
Citation: 熱帯医学 Tropical medicine 27(3). p165-170, 1985
Abstract: 暑熱(室温30℃,相対湿度60%)環境への暴露による生体の生理機能の変化とそのメカニズムを知るために,ウサギを6ケ月にわたって暑熱環境へ連続暴露して暑熱順化動物モデルとし,様々の体温調節反応を測定した.その結果,暑熱順化ウサギは,中性温(室温25℃,相対湿度60%)で飼育したウサギに比べ,10℃~40℃の全身皮膚への温度負荷に対する深部温の変化幅が小さく,又,同一温度刺激に対する耳介皮膚血管の拡張及び収縮開始温度が異なる事がわかった.以上の結果から,長期こわたり暑熱環境で飼育する事によって,高温環境下での体温調節機能が修飾される事が示唆された. / Rabbits were reared in a hot environment (30℃, 60% R. H.) for more than 6 months as a model of the heat acclimated animals. And, to clarify the mechanisms of physiological modifications which appeared during and/or after heat acclimation, various thermoregulatory responses to change in ambient temperature have been investigated in those rabbits. After 6 months of continuous heat exposure, change in rectal temperature in response to general heating (40℃) and cooling (10℃) of heat acclimated rabbits was smaller than that of control rabbits (control rabbits were reared in thermoneutral environment; 25℃, 60%). Furthermore, remarkable differences were observed in threshold temperature for starting vasodilation or vasoconstriction of the ear skin. These patterns were analysed to define the thermoregulatory responses to heat acclimation.
URI: http://hdl.handle.net/10069/4416
ISSN: 03855643
Type: Departmental Bulletin Paper
Appears in Collections:Volume 27, No. 3

Citable URI : http://hdl.handle.net/10069/4416

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