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糖尿病大鼠膀胱组织中NGF、P75的表达及意义 被引量:3

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摘要 成年雌性Sprague-Dawley(SD)大鼠35只,随机分成2组,正常对照组15只,糖尿病模型组20只。应用链脲佐菌素诱导。注射STZ72小时后测尾静脉血葡萄浓度。BG≥16.7mmol/L为模型成功。造模成功8周后进行实验,实验前1天测定代谢笼24小时尿量。实验切取完整膀胱和称量膀胱湿重。苏木素-伊红后,光镜下观察糖尿病大鼠膀胱逼尿肌的形态学变化。采用免疫组织化学方法检测膀胱逼尿肌细胞中NGF及P75的表达情况。结果体重较正常对照组增长缓慢,为(248.05±15.52g)vs(322.80±15.92g);24小时尿量模型组大于正常对照组,为(88.31±7.22ml)vs(20.93±2.90ml);膀胱湿重测定重于正常对照组,为(171.15±6.08mg)vs(135.53±5.33mg)。HE染色后光镜下观察逼尿肌结构表现,正常对照组:移形上皮细胞排列整齐,固有膜完整,逼尿肌细胞大小形态均一,肌纤维排列有序,神经元细胞排列整齐。糖尿病模型组:移形上皮细胞排列紊乱,固有膜充血水肿,粘膜下层有明显的嗜酸细胞浸润,逼尿肌肌细胞肥大,形态多样,肌束排列紊乱松散,神经元细胞排列紊乱松散,细胞水肿。免疫组化结果显示:正常对照组大鼠膀胱壁NGF主要分布在逼尿肌细胞浆内,阳性表达率为86.67%,而糖尿病模型组大鼠膀胱壁NGF也主要分布在逼尿肌细胞浆内,阳性表达率为35%,两组间有显著差异。同样,p75在膀胱壁黏膜下、固有膜和逼尿肌细胞内均有分布,和正常组相比,糖尿病组表达明显减少,差异具有统计学意义。结论NGF及其受体p75在STZ诱导的Ⅰ型糖尿病大鼠的膀胱逼尿肌细胞内表达均明显减少,NGF、P75在DC的发生发展中发挥了重要作用。
出处 《实用糖尿病杂志》 2011年第4期45-47,共3页 Journal of Practical Diabetology
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同被引文献33

  • 1李焱燚,王永刚,刘学源.β-七叶皂苷钠的研究进展[J].神经病学与神经康复学杂志,2009,6(2):147-150. 被引量:31
  • 2王东文,双卫兵,高宏飞,张炜芳,吴博威.糖尿病大鼠逼尿肌线粒体琥珀酸脱氢酶及其超微结构的改变[J].中华实验外科杂志,2005,22(11):1362-1363. 被引量:13
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