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間歇性低壓低氧後細胞的變化

The Cellular Changes in Intermittent Hypobaric Hypoxia

摘要


持續性缺氧誘導全身和局部反應會改善組織氧氣運送,特別是腦。這些改善的反應就是增加血液血紅素的濃度;除此之外,另一適應反應就是增加腦中微血管的密度,以改善腦中組織氧濃度。實際上,在疾病上持續的缺氧疾病有:先天氧化代謝的衰竭或後天的疾病(如慢性呼吸性衰竭和慢性心臟疾病)。曾有學者提出腦部供應的不良是間接造成老年的癡呆症和老化腦組織的改變。於我們第本篇的研究上,我們誘導大鼠間歇性低壓低氧的方式爲:壓力380 TORR的環境下,此高度爲大多數大白鼠所能適應存活的最大高度,在此環境下飼養至少1,2,4週年以後,才用來開始進行實驗。我們發現大鼠腦切片利用Tunnel分析方法在低壓低氧處理後l週於大腦皮質發現細胞凋零的現象而在下視丘及海馬回則無細胞凋零的現象。

並列摘要


The brains of male Wistar rats subjected to a hypobaric chamber (at a level of 280 Torr or 5,500 m high altitude) for 15 h/day for 1, 2, or 4 weeks and control animals housed under sea-level conditions were neuropathologically studied. We used tunnel assay to test whether the cellular changes has apoptosis or not. The intermittent hypobaric hypoxia caused apoptosis in cerebral cortex at 1 week. In addition, there was no apoptosis in, hypothalamus, and hippocampus. These findings indicate that apoptosis in cerebral cortex may play a role in the neuropathological alterations induced by intermittent hypobaric hypoxia.

被引用紀錄


楊宗熙(2007)。顯示Unicode字形之研究〔碩士論文,元智大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0009-3009200604032300

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