Ultrasonic Vocalization Responses in Genetically High- and Low-Emotional Rats
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概要
- 論文の詳細を見る
Tsukuba High Emotional (THE) and Tsukuba Low Emotional (TLE) strains of rats have been congenitally bred for use in studies of emotionality. The current study investigated THE and TLE strain differences in the footshock-induced ultrasonic vocalization responses of adult male rats. Ultrasonic vocalization response inducibility (ratio of rats emitting ultrasounds) and vocalization activity in THE rats were statistically higher than in TLE rats. We next examined the causal relation between the ultrasonic vocalizations and the activation of the pituitary-adrenocortical axis in response to footshocks in these two strains of rats. Rats were sorted into two groups, vocalizing and non-vocalizing, after being exposed to the shock regimen daily for 5 successive days. Basal plasma concentrations of ACTH and corticosterone were not different between THE and TLE rats. After receiving footshocks, significant increases in plasma concentrations of ACTH and corticosterone were induced in both strains of rats. These increases in plasma concentrations of ACTH and corticosterone were significantly higher in THE than in TLE rats. However, in vocalizing and non-vocalizing rats of both strains, no statistical differences in plasma concentrations of ACTH and corticosterone were observed after footshocks. These findings suggest that the high emotionality of the adult male rats was reflected in the emission of ultrasounds, and that the emission of ultrasonic vocalizations might not be related to the activation of the pituitary-adrenocortical axis.
- 社団法人 日本実験動物学会の論文
著者
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WATANABE Gen
Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Faculty of Agriculture, Toky
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TAYA Kazuyoshi
Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Faculty of Agriculture, Toky
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Taya Kazuyoshi
岐阜大学 連合獣医学研究科基礎獣医学
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Taya K
Tokyo Univ. Agriculture And Technol. Tokyo
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Taya Kazuyoshi
Laboratory Of Veterinary Physiology Department Of Veterinary Medicine Faculty Of Agriculture Tokyo U
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SUZUKI Yoshihiko
Department of Toxicology, Azabu University School of Veterinary Medicine
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Taya K
Laboratory Of Veterinary Physiology Department Of Veterinary Medicine Tokyo University Of Agricultur
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NAITO Hiroyuki
Department of Physics, Nagoya University
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Watanabe Gen
Laboratory Of Veterinary Physiology Department Of Veterinary Medicine Faculty Of Agriculture Tokyo U
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INOUE Maki
Department of Physiology II, Azabu University
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Inoue Maki
Department Of Neurophysiology School Of Veterinary Medicine Azabu University
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TOHEI Atsushi
Laboratory Animal Research Center, Dokkyo University School of Medicine
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Naito Hiroyuki
Department Of Neurophysiology School Of Veterinary Medicine Azabu University
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MAKINO Junsiro
The Institute of Psychology, University of Tsukuba
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Makino Junsiro
The Institute Of Psychology University Of Tsukuba
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Inoue Maki
Department Of Neurophysiology
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Watanabe Gen
中華人民共和国
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Tohei A
Laboratory Animal Research Center Dokkyo University School Of Medicine
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Tohei A
Lab. Animal Res. Center Dokkyo Medical Univ.
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Suzuki Y
Department Of Biochemistry School Of Veterinary Medicine Azabu University
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Suzuki Yoshihiko
Seis Project Technology Research Institute Of Osaka Prefecture
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Suzuki Yoshihiko
Department Of Biochemistry School Of Veterinary Medicine Azabu University
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Suzuki Yoshihiko
Department Of Biochemistry And Cell Biology Institute Of Development And Aging Sciences Graduate Sch
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Watanabe Gen
Laboratories Of Veterinary Physiology Dep. Of Veterinary Medicine Fac. Of Agriculture Tokyo Univ. Of
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Inoue Maki
Department of Ecosystem Studies, Institute of Agricultural and Life Science, The University of Tokyo
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Tohei Atsushi
Laboratory Animal Research Center, Dokkyo Medical University
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INOUE Maki
Department of Animal Science, Faculty of Agriculture, Kyoto University
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