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Abstract
ストレスが恒温動物の深部体温に及ぼす影響に関して概説した.拘束ストレスをはじめ,多くの心理的,身体的ストレスは動物の深部体温を一過性に上昇させる.このストレス性体温上昇反応は感染,炎症によって生じる発熱反応と異なり,発熱物質である炎症性サイトカインやプロスタグランディンE_2非依存性の機序によって生じる.コミュニケーションボックスにより,連日,心理的ストレスを負荷したラットでは,非ストレスラットに比べ,昼夜ともに体温が高くなる.その一方で,強い拘束ストレスを受けたラットの体温は低下する.これらの動物実験の成果をもとに,心因性発熱,慢性ストレス状況で生じる原因不明の微熱の機序について考察した.
The author reviewed the effects of stress on core body temperature (Tc) in homeotherms. Numerous types of acute stress were shown to induce transient increases in Tc in rats and mice. The mechanisms of stress-induced hyperthermia differ from that of fever, where proinflammatory cytokines and prostaglandin E_2 play crucial roles. In rats that were repeatedly exposed to psychological stress such as communication box stress for weeks, Tc increased to levels higher than that of non-stressed rats in both light and dark phases. In contrast, strong immobilization stress decreased Tc. Based on findings in animal studies, the author discussed the mechanisms of psychogenic fever and anti-pyretic drugs-resistant low-grade fever that developed under stressful conditions in humans.
Journal
- Japanese Journal of Psychosomatic Medicine [List of Volumes]
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Japanese Journal of Psychosomatic Medicine 48(7), 631-636, 2008-07-01 [Table of Contents]
Japanese Society of Psychosomatic Medicine