中脑导水管周围灰质腹外侧部星形胶质细胞对糖尿病神经病理性疼痛及痛相关负性情绪的调控作用

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目的探索中脑导水管周围灰质腹外侧部(vlPAG)星形胶质细胞活化在糖尿病神经病理性疼痛(DNP)及痛相关负性情绪发生、发展及维持过程中的具体作用及特征。方法使用链脲佐菌素(STZ)诱导SD大鼠Ⅰ型糖尿病,复制DNP模型;免疫荧光法观察、Sholl分析评价vlPAG星形胶质细胞在DNP进展过程中的形态和数量变化;采用化学遗传学技术定点定量向vlPAG注射携有星形胶质细胞特异性启动子gfaABC1D及修饰后的人毒蕈碱受体(hM3Dq或hM4Di)基因片段的腺相关病毒;待病毒稳定转染表达后,利用受体的外源性配体
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