丰富环境对缺血缺氧脑损伤新生大鼠海马脑源性神经营养因子表达及细胞凋亡的影响

发布时间：2019-07-26 20:19

【摘要】：目的:探讨丰富环境对缺血缺氧脑损伤(HIBD)新生大鼠海马脑源性神经营养因子(BDNF)表达及细胞凋亡的影响。方法:采用随机数字表法将36只7日龄新生大鼠分为假手术组、模型组及丰富环境组,各组又分为术后7d、28d两个亚组(n=6)。采用Rice-Vannucci经典方法建立新生大鼠HIBD模型。模型组及假手术组不予任何干预,丰富环境组予以早期抚触及丰富环境刺激治疗。术后7d、28d采用水迷宫检测方法评估大鼠学习记忆能力,免疫组化法检测大鼠海马CA1区BDNF的表达,TUNEL法检测海马CA1区细胞凋亡。结果:术后7d、28d,与模型组比较,丰富环境组逃避潜伏期均缩短(P0.05),穿越平台次数增多(P0.05),BDNF表达升高(P0.05),TUNEL阳性细胞数降低(P0.05)。结论:丰富环境能改善HIBD新生大鼠学习记忆能力,其机制可能与上调海马区BDNF的表达及抑制细胞凋亡有关。
[Abstract]:Aim: to investigate the effect of rich environment on the expression of brain-derived neurotrophic factor (BDNF) and apoptosis in hippocampus of neonatal (HIBD) rats with ischemic and anoxic brain injury. Methods: 36 7-day-old neonatal rats were randomly divided into three groups: false operation group, model group and rich environment group. Each group was divided into two subgroup groups (n 鈮，

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