目的:采用常壓間歇性低氧(intermittent hypoxia,IH)大鼠的動(dòng)物模型,觀察間歇性常壓低氧預(yù)處理的促血管生成作用。方法:成年雄性Wistar大鼠25只,體重210~215 g,隨機(jī)分為2大組:對(duì)照組(C組,n=5)和間歇性低氧預(yù)處理組(IH組,n=20)。IH組動(dòng)物進(jìn)行間歇性低氧預(yù)處理(4 h/d,間歇缺氧1 d者為IH1組,7 d者為IH2組,14 d者為IH3組,28 d者為IH4組),按計(jì)劃完成實(shí)驗(yàn)后測(cè)定心肌血管內(nèi)皮生長因子(VEGF) 蛋白表達(dá)及毛細(xì)血管密度。結(jié)果:間歇性低氧預(yù)處理大鼠心肌VEGF蛋白表達(dá)增加,心肌毛細(xì)血管密度增高。結(jié)論:間歇性低氧預(yù)處理能促進(jìn)大鼠心肌內(nèi)的血管生成,其機(jī)制可能與心肌VEGF表達(dá)增高有關(guān)。
引用本文: 張文勇,王璋,李秋,趙思勤,聶曉莉,胡詠梅. 間歇性低氧預(yù)處理對(duì)大鼠心肌促血管生成作用的實(shí)驗(yàn)研究. 華西醫(yī)學(xué), 2008, 23(1): 108-109. doi: 復(fù)制
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