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外源性干细胞因子对逼尿肌活动低下大鼠Cajal间质细胞数及逼尿肌收缩力的影响

Journal of third military medical university(2016)

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Abstract
目的 探讨干细胞因子(stem cell factor,scF)对活动低下逼尿肌中Cajal间质细胞(interstitial cells of Cajal,ICCs)数及逼尿肌收缩力的影响.方法 将SD大鼠分为3组:对照组、逼尿肌活动低下(detrusor underactive,DU)组以及DU+ SCF组.采用ELISA检测血清SCF水平,免疫荧光组织化学法检测ICCs细胞数目,RT-PCR以及Western blot检测c-kit以及SCF的组织水平表达;体外肌条实验检测逼尿肌收缩能力.结果 活动低下逼尿肌组织中ICCs数显著减少(P<0.05),SCF及c-kit表达显著降低(P<0.05),逼尿肌收缩频率及收缩幅度显著下降(P<0.05);外源性SCF可以显著增加活动低下逼尿肌组织中ICCs数(P<0.05),增加SCF及c-kit的表达(P<0.05),显著提升逼尿肌收缩幅度和收缩频率(P<0.05).结论 外源性SCF可以影响活动低下逼尿肌组织中ICCs数,进而改变逼尿肌收缩能力.
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Key words
bladder dysfunction,detrusor underaction,stem cell factor,interstitial cells of Cajal,bladder outlet obstruction
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