脊髓损伤后膀胱氮能神经变化的动物实验研究  

AN ANIMAL EXPERIMENTAL STUDY OF NITRERGIC INNERVATION IN URINARY BLADDER AFTER SPINAL CORD INJURY

作　　者：黄昭明[1] 李静[1] 郑少斌[2] 

机构地区：[1]解放军第458医院 [2]广州第一军医大学南方医院

出　　处：《解放军医学杂志》2001年第10期743-744,共2页Medical Journal of Chinese People's Liberation Army

摘　　要：为观察脊髓损伤模型动物及膀胱内灌注辣椒素后膀胱氮能神经 (NO)的变化 ,将SD大鼠和豚鼠随机分为正常组、假损伤组及脊髓损伤模型组 ,横断第 8～ 9胸髓制作动物模型 ,取部分模型大鼠进行膀胱内辣椒素灌注。所有动物膀胱分为基底部、体部及顶部 ,分别进行ncNOS免疫组化检测。结果显示 ,豚鼠模型组膀胱基底部NOS阳性神经有显著性增加 ,大鼠模型组与正常组比较无显著性差异 ,而辣椒素灌注膀胱后NOS阳性神经分布出现了显著增加 (P <0 0 5 )。提示NO在脊髓损伤后膀胱功能的调节中起重要作用 。This study was undertaken to examine ncNOS IR in bladder after spinal cord injury (SCI). In the meantime, we determine rats bladder ncNOS IR following intravesical instillation of capsaicin after SCI. Adult Sprague Dawley rats and guinea pigs were randomly divided into normal group, sham injury group, spinal cord injury group (4～5weeks after T 8～9 transection). A dose of 1mmol/L intravesical capsaicin was instilled in a part of SCI rats. Bladders of all animals were divided into three tissue pieces: bladder base, bladder body and bladder dome,in which the distribution of ncNOS IR was examined. Spinal transection induced a significant ncNOS IR increase in guinea pig bladder base. In rats, the quantity of ncNOS IR did not differ between the two groups. Instillation of intravesical capsaicin can cause significant up regulation of rat bladder ncNOS IR after SCI. The increase of ncNOS IR in SCI animals bladder indicates that NO may play an important role in the regulation of micturition reflex after SCI. In SCI rats, ncNOS IR can significantly be up regulated by intravesical capsaicin instillation, suggesting that NO may act as a factor in the action of capsaicin.

关 键 词：脊髓损伤 逼尿肌 氮能神经 动物实验 膀胱功能 

分 类 号：R651.2[医药卫生—外科学] R694.5[医药卫生—临床医学]