吡格列酮对糖尿病大鼠异氟烷麻醉后认知功能改变的影响
发布时间:2018-08-12 18:21
【摘要】:目的:探讨吡格列酮对糖尿病大鼠异氟烷麻醉后认知功能改变的影响及可能的机制方法:选用雄性Sprague Dawley(SD)8个月龄大鼠52只,,随机分出12只为正常对照组(NC组,n=12)。其余40只大鼠为造模组,均使用一次性腹腔注射50mg/kg链脲佐菌素(STZ)诱导糖尿病模型,72小时后间断3次取尾静脉血测随机血糖≥16.7mmol/l为造模成功,NC组大鼠一次性腹腔注射同等量的枸橼酸钠缓冲液。造模组40只大鼠全部成功,并随机分为糖尿病组(DM组n=20),吡格列酮组(Pio组,n=20)。持续8周灌胃:正常对照组和糖尿病组给予相同体积的生理盐水灌胃,Pio组给予50mg/kg吡格列酮+生理盐水混悬液灌胃。于灌胃第8周后进行Morris水迷宫实验,连续训练5天,每天4次,记录逃避潜伏期的均值,第6天予2%异氟烷吸入麻醉2h,第7天完成一次水迷宫测试,和一次空间探索实验,随后处死大鼠,进行HE染色和免疫组化学染色法观察海马区椎体神经元形态学改变和IL-1β,BAX(促凋亡基因)、BCL-2的表达(抗凋亡基因)。 结果:DM组大鼠在异氟烷麻醉处理后Morris水迷宫试验逃避潜伏期分别较对照组和Pio组明显延长、在原平台象限游泳时间占总游泳时间的百分比下降(p<0.05),NC组和Pio组比较没有显著差异;DM组海马区炎性因子IL-1β、促凋亡基因BAX表达上调,抗凋亡基因BCL-2表达降低及BCL-2/BAX比值下降分别与NC组和Pio组有统计学差异(p<0.05),NC组和Pio组比较没有统计学意义。 结论:异氟烷吸入麻醉和糖尿病的患病可能会增加大鼠早期认知功能改变发生的风险,其机制可能是炎症反应的激活;吡格列酮可能具有一定的抗炎效果,并且有可能是通过该机制间接的起到神经保护作用,减少糖尿病大鼠异氟烷麻醉后认知功能改变的发生。
[Abstract]:Objective: to investigate the effect of pioglitazone on cognitive function changes after isoflurane anesthesia in diabetic rats. Methods: 52 male Sprague Dawley (SD) rats aged 8 months were randomly divided into normal control group (NC group) and normal control group (NC group). The other 40 rats were used as model group. The diabetic model was induced by intraperitoneal injection of 50mg/kg streptozotocin (STZ) for 72 hours. Random blood glucose 鈮
本文编号:2179903
[Abstract]:Objective: to investigate the effect of pioglitazone on cognitive function changes after isoflurane anesthesia in diabetic rats. Methods: 52 male Sprague Dawley (SD) rats aged 8 months were randomly divided into normal control group (NC group) and normal control group (NC group). The other 40 rats were used as model group. The diabetic model was induced by intraperitoneal injection of 50mg/kg streptozotocin (STZ) for 72 hours. Random blood glucose 鈮
本文编号:2179903
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