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| 年龄相关的纹状体和大脑皮层在缺血缺氧后的再生反应 |
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| Age-dependent regenerative responses in the striatum and cortex after hypoxia-ischemia |
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| Zhu C., Qiu L., Wang X., Xu F., Nilsson M., Cooper-Kuhn C., Kuhn H.G., Blomgren K. 2009/5/29 18:38:56 |
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Journal of Cerebral Blood Flow and Metabolism, 2009, Volume 29, Issue 2
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| Regenerative responses after hypoxia-ischemia (HI) were investigated in the immature (P9) and juvenile (P21) mouse striatum and cortex by postischemic 5-bromo-2-deoxyuridine labeling and phenotyping of labeled cells 4 weeks later. HI stimulated the formation of new cells in striatum and cortex in immature, growing brains (P9), but when brain growth was finished (P21) proliferation could be stimulated only in striatum, not in cortex. However, the relative increase was higher in P21 (460%) than P9 striatum (50%), though starting from a lower level at P21. Starting from this lower level, HI-induced proliferation in P21 striatum reached the same level as in P9 striatum, but not higher. Phenotyping revealed that low levels of neurogenesis were still present in nonischemic P9 cortex and striatum, but only in striatum at P21. Ischemia-induced neurogenesis was found only in P9 striatum. Ischemia-induced gliogenesis occurred in P9 and P21 striatum as well as P9 cortex, but not in P21 cortex. Hence, the regenerative response was stronger in striatum than cortex, and stronger in P9 than P21 cortex. The biggest ischemia-induced change was the 49-fold increase in P21 striatal microglia, and this was accompanied by increased inflammation, as judged by the size and numbers of CCL2- and interleukin-18-positive cells. © 2009 ISCBFM All rights reserved. |
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| Correspondence Address: Zhu, C.; Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Box 432, SE 405 30 Gothenburg, Sweden; email: changlian.zhu@neuro.gu.se |
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 疾病资源中心
摘自：《西氏内科学》，第23版
患者女性，21岁，因干咳、间歇性气促2个月到急诊科就诊。开始症状为上呼吸道感染引起的鼻塞、流涕和咳嗽。医生检查后开了抗生素。服药后鼻部症状缓解，但仍有轻微干咳和呼吸困难。其他症状包括疲劳和焦虑。否认发热、体重减轻、胸痛、端坐呼吸、气喘、鼻后滴漏、胃灼热以及神经系统症状。
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