机构地区:[1]青岛大学附属烟台毓璜顶医院中西医结合科,烟台264000 [2]青岛大学医学院临床医学院中西医结合科,烟台266003 [3]滨州医学院附属烟台光华医院急诊科,烟台264003 [4]滨州医学院中西医结合科,烟台264003
出 处:《中华行为医学与脑科学杂志》2017年第7期582-588,共7页Chinese Journal of Behavioral Medicine and Brain Science
基 金:基金项目:国家自然科学基金项目(81571283);山东省自然科学基金项目(ZR2016HL21);山东省中医药科技发展计划项目(2015-420);山东省医药科技发展计划项目(2014WS0248)
摘 要:目的探讨醒智益脑颗粒对急性一氧化碳(c0)中毒大鼠脑组织Nogo及OMgp蛋白表达的调节作用。方法120只sD大鼠按随机数字表法分为正常对照组、CO中毒组和醒智益脑颗粒治疗组,每组40只。中毒组和治疗组大鼠均用动物氧舱法建立急性CO中毒模型并给予高压氧治疗,治疗组大鼠在此基础上给予醒智益脑颗粒灌胃治疗。各组大鼠分别在染毒后1d、1周、1月及2月应用Morris水迷宫实验和穿梭箱实验进行神经行为学评分,应用免疫组化及Westernblot法观察大鼠脑组织轴突生长抑制蛋白(neuriteoutgrowthinhibitor,Nogo)及少突胶质细胞髓鞘糖蛋白(oligoden—drocyte—myelinglycoprotein,OMgp)表达的变化。结果与正常对照组大鼠[(11.6±8.4)s、(41.8±4.4)%、(16.1±2.3)S及(1.2±0.2)S]相比,CO中毒后1d大鼠逃避潜伏期明显延长[(14.1±6.1)s],T1/T总显著降低[(23.6±2.4)%],逃避时间[(26.3±3.8)s]与主动逃避潜伏时间[(2.3±0.3)s]明显延长,CO中毒引起的该认知功能减退在中毒后期(1周至2月)更为明显(P〈0.05);与CO组相比,醒智益脑颗粒治疗后期(〉1周)大鼠逃避潜伏期明显缩短[从(3.5±0.6)S至(3.1±0.5)s],T。/T。逐渐升高[从(29.7±3.2)%至(36.7±3.2)%],逃避时间[从(39.7±5.4)S至(18.1±2.0)S]与主动逃避潜伏时间[从(4.3±0.4)s至(2.1±0.2)s]明显缩短(P〈0.05)。CO中毒后大鼠脑组织中Nogo及OMgp蛋白表达逐渐增加,增高的Nogo蛋白及OMgp蛋白在大鼠CO中毒后1月仍可观察到;醒智益脑颗粒能明显改善大鼠的认知功能,降低Nogo蛋白表达水平,与中毒组相比差异有统计学意义(P〈0.05),而治疗组大鼠脑组织中OMgp表达水平较中毒组略为减少,差异无统计学意义(P〉O.05)。结论CO中毒后脑损伤及脑组织脱髓Objective To investigate the effect of Xing-Zhi-Yi-Nao (XZYN) particles on the expressions of Nogo and OMgp proteins in brain of rats after acute carbon monoxide (CO) poisoning. Methods A total of 120 Sprague-Dawley rats were randomly divided into normal group, CO poisoning group and XZYN particles treatment group (40 rats in each group). The rats in CO poisoning group and treatment group of a- cute CO poisoning were established by using an animal chamber, and then received hyperbaric oxygen thera- py. Meanwhile,rats in treatment group were further given additional XZYN particles twice a day by gavage. At 1 day, 1 week, 1 month and 2 months after CO poisoning,the neurobebavioral score of rats was evaluated by a Morris water maze test and a shuttle box test, and the expressions of neurite outgrowth inhibitor (Nogo) and oligodendrocyte-myelin glycoprotein (OMgp) were investigated in rat brain tissue by immunohistochem- istry staining and western blotting assay,respectively. Results Compared with those in normal control group ( (11.6±8.4) s, (41.8±4.4)%, (16.1±2.3) s,and (1.2±0.2) s) ,the escape latency in CO group was signifi- cantly prolonged ( ( 14.1±6.1 ) s), and the T1/T total was obviously decreased (23.6±2.4) %, the escape time ((26.3±3.8)s) ,the active escape latency ((2.3±0.3)s) were notably extended at 1 d (P〈0.05). The cognitive dysfunction caused by CO poisoning was more obvious in the later stage of poisoning (from 1 week to 2 months, P〈 0.05 ). Compared with those in CO group, the escape latency was significantly shortened ( from (3.5±0.6) s to (3.1±0.5) s) ,the T1/T total was gradually increased ( from (29.7±3.2) % to ( 36.7± 3.2) % ), the escape time (from (39.7± 5.4)s to ( 18.1 ±2.0)s ) and the active escape latency were obviously decreased (from (4.3~0.4)s to (2.1±0.2)s) in the later stage (〉 1 week) in Xing-Zhi-Yi-Nao treatment group (P〈O.05).Th
关 键 词:一氧化碳中毒 醒智益脑颗粒 认知功能障碍 轴突生长抑制蛋白 少突胶质细胞髓鞘糖蛋白
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