雄性大鼠膀胱出口梗阻致膀胱重构的模型比较研究
发布时间:2018-12-20 15:58
【摘要】:目的:通过采用耻骨后途径膀胱颈部分结扎和会阴途径球部尿道部分结扎两种方法,建立雄性大鼠膀胱出口部分梗阻(Paritial bladder outlet obstraction,pBOO)模型,并对所建模型进行鉴定和比较,为pBOO后膀胱重构(Bladder remodeling)的深入研究提供一种成活率高,复制性和稳定性较好的动物模型。方法:80只健康雄性Wistar大鼠随机分为三组:Ⅰ组为假手术组(对照组),20只;Ⅱ组为耻骨后途径膀胱颈部分结扎组,30只;Ⅲ组为会阴途径球部尿道部分结扎组,30只。依据梗阻时间分别将Ⅰ组、Ⅱ组、Ⅲ组大鼠随机分为2周组和4周组,于术后2周和4周对大鼠行尿动力学检测后,完整切取膀胱测其重量,将精囊腺组织和部分膀胱行10%福尔马林液固定,H-E染色,观察组织学变化。结果:Ⅱ组和Ⅲ组成活率分别为73.3%和80.0%,二者无统计学意义;Ⅰ组、Ⅱ组、Ⅲ组建模手术时间分别为(9.75±2.29)、(17.33±3.54)、(10.77±9.44)min,Ⅱ组与Ⅰ组和Ⅲ组比较差异均有统计学意义(P0.05);Ⅰ组、Ⅱ组、Ⅲ组的2周组和4周组逼尿肌漏尿点压(Detrusor leak point pressure,DLPP)分别为(26.31±2.32)、(27.34±3.93)、(24.68±2.39)mmHg和(26..42±2.41)、(34.23±3.01)、(32.63±3.20) mmHg,Ⅱ组与Ⅲ组的:2周组比较差异有统计学意义(P0.05),Ⅰ组的4周组显著低于Ⅱ组和Ⅲ组的4周组(P0.01),Ⅱ组和Ⅲ组的2周组和4周组比较差异均有统计学意义(P0.01);Ⅰ组、Ⅱ组、Ⅲ组的2周组和4周组膀胱湿重分别为(0.1486±0.0200)、(0.1881±0.0490)、(0.1797±0.0286)g和(0.1478±0.0236)、(0.2567±0.0476)、(0.2453±0.0378)g,Ⅰ组和Ⅱ组在2周时间点上的膀胱湿重有统计学差异(P0.05),Ⅰ组和Ⅱ组、Ⅲ组在4周时间点上的膀胱湿重差异有统计学意义(P0.01),Ⅱ组和Ⅲ组分别在2周和4周不同时间点上的膀胱湿重有统计学显著性差异(P0.01)。梗阻2周后膀胱组织结构尚未发生明显变化,4周后逼尿肌细胞增生、肥大,逼尿肌层变厚,平滑肌细胞之间及肌束之间胶原纤维增生。精囊腺H-E染色可见耻骨后途经无明显扩张,而会阴途径腺腔明显扩张。结论:耻骨后途径膀胱颈部分结扎和会阴途径球部尿道部分结扎两种方法都能成功建立雄性大鼠pBOO模型,与耻骨后途径相比,会阴途径成活率高,并发症少且容易控制,手术操作时间短,复制性和稳定性好。
[Abstract]:Objective: to establish a male model of bladder outlet partial obstruction (Paritial bladder outlet obstraction,pBOO) by partial ligation of bladder neck via retropubic approach and partial ligation of urethra via perineal approach, and to identify and compare the model. It provides an animal model with high survival rate, good replicability and stability for the further study of bladder remodeling (Bladder remodeling) after pBOO. Methods: 80 healthy male Wistar rats were randomly divided into three groups: group 鈪,
本文编号:2388212
[Abstract]:Objective: to establish a male model of bladder outlet partial obstruction (Paritial bladder outlet obstraction,pBOO) by partial ligation of bladder neck via retropubic approach and partial ligation of urethra via perineal approach, and to identify and compare the model. It provides an animal model with high survival rate, good replicability and stability for the further study of bladder remodeling (Bladder remodeling) after pBOO. Methods: 80 healthy male Wistar rats were randomly divided into three groups: group 鈪,
本文编号:2388212
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