Pituitary-adrenocortical responses to the first dyadic encounters in male rhesus monkeys: Effect of dominance relationship
2000; Wiley; Volume: 50; Issue: 4 Linguagem: Inglês
10.1002/(sici)1098-2345(200004)50
ISSN1098-2345
AutoresKazumasa Kimura, Keiko Shimizu, Motoharu Hayashi, Toshio Ishikawa, Yukihiro Agō,
Tópico(s)Circadian rhythm and melatonin
ResumoAmerican Journal of PrimatologyVolume 50, Issue 4 p. 247-256 Research Article Pituitary–adrenocortical responses to the first dyadic encounters in male rhesus monkeys: Effect of dominance relationship Kazumasa Kimura, Corresponding Author Kazumasa Kimura Toukatsu Clinic, Matsudo, JapanToukatsu Clinic, 4–136 Shinmatsudo, Matsudo City, Chiba, 270 JapanSearch for more papers by this authorKeiko Shimizu, Keiko Shimizu Department of Cellular and Molecular Biology, Primate Research Institute of Kyoto University, Kyoto, JapanSearch for more papers by this authorMotoharu Hayashi, Motoharu Hayashi Department of Cellular and Molecular Biology, Primate Research Institute of Kyoto University, Kyoto, JapanSearch for more papers by this authorToshio Ishikawa, Toshio Ishikawa Division of Psychosomatic Research, National Institute of Mental Health, National Center of Neurology and Psychiatry, Ichikawa City, Chiba, JapanSearch for more papers by this authorYukihiro Ago, Yukihiro Ago Division of Psychosomatic Research, National Institute of Mental Health, National Center of Neurology and Psychiatry, Ichikawa City, Chiba, JapanSearch for more papers by this author Kazumasa Kimura, Corresponding Author Kazumasa Kimura Toukatsu Clinic, Matsudo, JapanToukatsu Clinic, 4–136 Shinmatsudo, Matsudo City, Chiba, 270 JapanSearch for more papers by this authorKeiko Shimizu, Keiko Shimizu Department of Cellular and Molecular Biology, Primate Research Institute of Kyoto University, Kyoto, JapanSearch for more papers by this authorMotoharu Hayashi, Motoharu Hayashi Department of Cellular and Molecular Biology, Primate Research Institute of Kyoto University, Kyoto, JapanSearch for more papers by this authorToshio Ishikawa, Toshio Ishikawa Division of Psychosomatic Research, National Institute of Mental Health, National Center of Neurology and Psychiatry, Ichikawa City, Chiba, JapanSearch for more papers by this authorYukihiro Ago, Yukihiro Ago Division of Psychosomatic Research, National Institute of Mental Health, National Center of Neurology and Psychiatry, Ichikawa City, Chiba, JapanSearch for more papers by this author First published: 22 March 2000 https://doi.org/10.1002/(SICI)1098-2345(200004)50:4 3.0.CO;2-NCitations: 9AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract Male rhesus monkeys unfamiliar with each other were paired in a cage, and blood samples were collected before and a few hours after pair formation. Adrenocorticotrophic hormone (ACTH) and cortisol levels in each blood sample were measured. Dominant–subordinate status was ascertained through two rank tests, the food competition test and the agonistic behavior test, which were performed immediately after pair formation. As a result, the dominance relationship was determined in seven pairs formed from five animals, and the differences in ACTH and cortisol values between the dominant and subordinate animal in these pairs were compared statistically. The day after the first encounter, a second encounter was conducted in randomly selected pairs of monkeys. In the first encounters, higher levels of both ACTH and cortisol were detected in dominant animals in comparison to subordinate animals. Changing the animal's partner altered the stress responses whenever the animal's dominant–subordinate status changed. The elevated levels of ACTH and cortisol in dominant animals disappeared on the day after the first encounter. In dominant animals, the pituitary–adrenocortical stress response reacts sharply to situational demands, whereas subordinate animals have a weaker response. This acute stress response is different from a chronic stress response. When the subordinate animal cannot escape, its hypothalamic–pituitary–adrenocortical axis appears to be suppressed. Am. J. Primatol. 50:247–256, 2000. © 2000 Wiley-Liss, Inc. Citing Literature Volume50, Issue4April 2000Pages 247-256 RelatedInformation
Referência(s)