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重组腺相关病毒神经肽Y基因转染对海人酸致痫大鼠癫痫发作及海马苔藓纤维出芽的影响 被引量:1

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摘要 目的探讨重组腺相关病毒神经肽Y(rAAV2/1-NPY-EGFP)基因转染对癫痫发作和海马苔藓纤维出芽的影响。方法清洁级健康Wistar大鼠30只,体重250~270 g,随机分成NPY实验组(n=12),阳性对照组(n=12)和空白对照组(n=6)。实验组:脑室注射10μl的rAAV2/1-NPY-EGFP,滴度为5×1011μg/ml;阳性对照组在脑室内注射等量的生理盐水。以上两组10 min后分别在海马CA3区注射海人酸(KA);空白对照组依次分别在脑室和CA3区注射等量的生理盐水。并分别于注射后2、4 w观察大鼠的癫痫发作情况,视频脑电(EEG)癫痫波的频率和波幅,Timm染色观察海马CA3区苔藓纤维出芽。结果 NPY实验组大鼠随观察时间的延长,发作程度逐渐减轻,与阳性对照组大鼠相比,于4 w时,脑电图癫痫波放电频率减少(P<0.05),波幅降低(P<0.05)。NPY实验组苔藓纤维出芽分级明显低于对照组。空白对照组没有癫痫发作,CA3区苔藓纤维出芽没有明显变化。结论 rAAV2/1-NPY-EGFP基因转染可以降低海马CA3区苔藓纤维出芽程度,有效抑制癫痫发作,为NPY基因治疗临床难治性癫痫提供了有力试验支持。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2013年第1期107-109,共3页 Chinese Journal of Gerontology
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