脊髓 GAT-1在大鼠背根节慢性压迫神经病理性疼痛中的作用  

Role of Spinal GAT-1 in Neuropathic Pain Caused by Chronic Compression of Dorsal Root Gan-glion in Rats

在线阅读下载全文

作  者:龚琴[1] 彭健泓[1] 廖荣宗[1] 胡兴国[2] 曾因明[3] 

机构地区:[1]广东省佛山市中医院麻醉科,广东佛山528000 [2]湖南省桃源县人民医院麻醉科,湖南桃源415700 [3]徐州医学院江苏省麻醉医学研究所,江苏徐州,221004

出  处:《医学临床研究》2013年第11期2114-2117,共4页Journal of Clinical Research

基  金:广东省佛山市科技局基金资助课胚(A201108002)

摘  要:[目的]探讨脊髓γ-氨基丁酸转运体-1(GAT-1)在大鼠慢性背根神经节压迫(CCD)神经病理性疼痛中的作用。[方法]选择雄性SD大鼠72只,随机分为假手术组(A组,n=24)、CCD组(B组,n =24)、鞘内NO-711+CCD组( C组,n =24),三组再按不同时段分为6个亚组( n =4),分别于给药前(T0)、给药后1 h (T1)、4 h(T2)、8 h(T3)、16 h(T4)、24 h(T5)时间点处死大鼠取脊髓腰段进行GAT-1蛋白Western Blot实验。[结果]与假手术组相比,B组T0、T1、T2、T3、T4、T5时间点的GAT-1蛋白含量明显增加( P <0.01),鞘内注射生理盐水后,B组的GAT-1蛋白含量无明显改变( P >0.05);与B组和T0相比,鞘内注射20μg NO-711后T1、T2、T3,C组的GAT-1蛋白含量显著降低( P <0.01),鞘内给药后T4,GAT-1蛋白含量逐渐回升,与B组同一时间点比GAT-1蛋白含量仍明显降低( P <0.05),至给药后 T5 GAT-1蛋白含量回升到正常水平( P >0.05)。[结论]CCD模型大鼠脊髓 GAT-1蛋白表达水平上调,GAT 抑制剂 NO-711能明显抑制CCD模型大鼠脊髓GA T-1蛋白表达水平的上调,但是不能抑制GA T-1蛋白基础表达水平。大鼠脊髓背角GA T-1蛋白表达水平的改变与大鼠CCD神经病理性疼痛的机制可能密切相关。[Objective] To explore the role of gamma-aminobutyric acid tranporter-1(GAT-1) in neuro-pathic pain caused by chronic compression of dorsal root ganglion(CCD) in rats .[Methods]A total of 72 male SD rats were randomly divided into sham group(group A ,n=24) ,CCD group(group B ,n=24) and intrathe-cal NO-711+CCD group(group C ,n =24) .According to different time ,three groups were divided into six sub-groups( n=4) .All rats were sacrificed before administration (T0 ) ,1h(T1 ) ,4h(T2 ) ,8h(T3 ) ,16h(T4 ) and 24h(T5 ) after administration .Lumbar spinal cord of rats was collected for Western Blot test of GAT-1 protein .[Results] Compared with sham group ,GAT-1 protein in group B at T0 ,T1 ,T2 ,T3 ,T4 and T5 were obviously increased( P<0 .01) .After intrathecal injection of normal saline ,GAT-1 protein in group B had no obvious change( P>0 .05) .Compared with group B and T0 ,GAT-1 protein in group C at T1 ,T2 and T3 after intrathecal injection with 20 μg NO-711 were markedly decreased ( P <0 .01) .GAT-1 protein was gradually increased at T4 after intrathecal administration .Compared with group B ,GAT-1 protein in group C was still obviously decreased at the same time point( P <0 .05) .GAT-1 protein returned to the normal level until T5 after administration( P>0 .05) .[Conclusion] The expression levels of GAT-1 protein in rat model with CCD are increased .GAT inhibitor NO-711 can obviously inhibit the up-regulation of GAT-1 protein in spine cord of rat model with CCD ,but not inhibit the basic expression level of GAT-1 .The change of GAT-1 protein of spi-nal dorsal horn in rats may be closely correlated with the mechanism of nruropathic pain in rats with CCD .

关 键 词:疼痛 脊髓 大鼠 

分 类 号:R411.1[医药卫生—临床医学]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象