出 处:《中华实验外科杂志》2017年第1期158-161,共4页Chinese Journal of Experimental Surgery
基 金:国家自然科学基金面上项目(81471442)
摘 要:目的比较小鼠压力性尿失禁的不同造模方法的效果。方法将140只C57BL/6雌性小鼠随机的分为4组:正常组、阴道扩张组(VD)、卵巢切除组(OV)、阴道扩张+卵巢切除组(VD+OV),正常组65只,其他各组25只。4组作相应处理后记录术后感染率及死亡率,分别测定膀胱容量(MBC)及漏尿点压力(LPPs),并用明胶酶谱检测盆底组织中基质金属蛋白酶(MMP)-2和MMP-9的含量及活性,对比分析上述造模方法。结果正常组、VD组、OV组和VD+OV组MBC分别为(0.101±0.014)、(0.081±0.015)、(0.095±0.010)、(0.071±0.013) ml,腹压漏尿点压(ALPP)分别为(46.420±6.399)、(30.990±5.021)、(44.330±6.465)、(28.920±5.232) cmH2O(1 cmH2O=0.098 kPa),膀胱漏点压(BLPP)分别为(44.180±4.912)、(26.680±6.485)、(41.450±6.474)、(22.120±7.412) cmH2O,VD组的MBC、ALPP和BLPP较正常组显著降低(P值分别为0.000、0.000和0.000),VD+OV组的MBC、ALPP和BLPP较正常组显著降低(P值分别为0.000、0.000和0.000),但VD组和VD+OV组比较差异无统计学意义(P值分别为0.051、0.245和0.062),OV与正常组比较差异无统计学意义(P值分别为0.093、0.238和0.064);各组MMP-2/MMP-9表达灰度值分别为13.930±0.823/9.610±0.771、14.990±0.908/11.100±0.735、13.890±0.707/9.761±0.680、15.470±1.070/11.240±0.750,VD组较正常组显著升高(P值分别为0.003/0.000和0.001/0.000),VD+OV组较正常组显著升高(P值分别为0.000/0.000和0.000/0.000),但VD组和VD+OV组间MMP-2/MMP-9差异无统计学意义(P值分别为0.216/0.604),OV组与正常组比较差异也无统计学意义(P值分别为0.912/0.573)。结论阴道扩张法及阴道扩张结合卵巢切除法均能成功建立压力性尿失禁(SUI)小鼠模型,但阴道扩张法更有效。Objective To compare the 3 kinds of stress urinary incontinence (SUI) mice models. Methods 140 female mice were randomly divided into 4 groups: control group, vaginal distension (VD) group, ovariectomy (OV) group, and VD+ OV group. There were 65 mice in control group, and 25 mice each in the rest three groups. The postoperative infection rate and mortality rate were recorded, and maximum bladder capacity (MBC) and leak point pressures (LPPs) were measured. The contents and activity of matrix metalloproteinase (MMP)-2 and MMP-9 were detected by zymography assay after surgery. The advantages and disadvantages of the three models were comparatively analyzed.Results The MBC/abdominal leak point pressure (ALPP)/bladder leak point pressure (BLPP) in control group, VD group, OV group, and VD+ OV group were respectively (0.101±0.014) ml/(46.420±6.399) cmH2O/(44.180±4.912) cmH2O (1 cmH2O=0.098 kPa); (0.081±0.015) ml/(30.990±5.021) cmH2O /(26.680±6.485) cmH2O; (0.095±0.010) ml/(44.330±6.465) cmH2O /(41.450±6.474) cmH2O and (0.071±0.013) ml/(28.920±5.232) cmH2O /(22.120±7.412) cmH2O, reduced significantly in VD group (P value respectively were 0.000, 0.000 and 0.000) and VD+ OV group (P value respectively were 0.000, 0.000 and 0.000), compared with control group and OV group, but the difference between VD+ OV group and VD group was not notable (P value respectively were 0.051, 0.245 and 0.062), or between OV group and control group (P value respectively were 0.093, 0.238 and 0.064); The expression of MMP-2/MMP-9 in these group were respectively 13.930±0.823/9.610±0.771, 14.990±0.908/11.100±0.735, 13.890±0.707/9.761±0.680, 15.470±1.070/11.240±0.750, increased notably in VD group (P value respectively were 0.003/0.000 and 0.001/0.000) and VD+ OV group (P value respectively were 0.000/0.000 and 0.000/0.000) compared with control grou, but the difference of MMP-2/MMP-9 between the VD+ OV
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