期刊简介
本学报是以反映首都医科大学各院、系、所及10任所附属、教学医院的科研成果为主的高级综合性学术期刊。季刊，国内外公开发行。主要栏目有论著、经验介绍、技术·方法、综述等。
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首页>首都医科大学学报杂志
- 杂志名称：首都医科大学学报杂志
- 主管单位：北京市教育委员会
- 主办单位：首都医科大学
- 国际刊号：1006-7795
- 国内刊号：11-3662/R
- 出版周期：双月刊
期刊荣誉：全国优秀科技期刊三等奖（第二届）期刊收录：维普收录(中), 万方收录(中), 上海图书馆馆藏, 知网收录(中), CA 化学文摘(美), 国家图书馆馆藏, 统计源核心期刊(中国科技论文核心期刊)
缺氧预适应过程中的小鼠脑一氧化氮下调
吕国蔚；刘宏雁
关键词：缺氧预适应, 鼠脑, 一氧化氮, hypoxic preconditioning, nitric oxide, oxygen consumption, animal model, brain stem
摘要：Downregulation of nitric oxide in the brain of mice during their hypoxic preconditioning.J Appl Physiol 91:1193～1198,2001.An animal model of hypoxic preconditioning was produced in mice by repeated exposure to autohypoxic condition.The animals' tolerance times to hypoxia were 1.7,1.8,2.1 and 2.3 times longer in runs 2,3,4 and 5,respectively,than that in run 1,and their oxygen consumption and heart and respiration rates were progressively and significantly slowed down during the repetitive exposure to hypoxia.L-arginine concentration,nitric oxide (NO) synthase-positive cells,NO synthase activity,and NO content in the whole brain and the subregions telencephalon,diencephalons,and brain stem were significantly increased during the first exposure and were,instead of continuing to increase,significantly decreased in run 4 after the second and third exposure.Tolerance times under the hypoxic condition were significantly shortened and prolonged when preadministration of L-arginine and its analog,respectively,was made.These results indicate that NO in the brain is downregulated under condition of hypoxic preconditioning and negatively involved in increased tolerance to hypoxia.
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