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"DA受体功能"
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甘氨酸对大鼠视皮层神经元突触后NR2A-及NR2B—NMDA受体功能的调制作用
旨在探讨甘氨酸对大鼠视皮层神经元突触后不同亚型NMDA受体功能的调制作用。采用脑片标本的全细胞膜片钳技术,记录大鼠视皮层Ⅱ/Ⅲ层锥体神经元的微小兴奋性突触后电流(mEPSC);灌流不同浓度甘氨酸和D-丝氨酸后,观察其对突触后NMDA受体电流的影响,之后使用NR2A—NMDAR和NR2B-NMDAR拮抗剂,观察其对突触后NMDA受体电流(NMDAR-mEPSC)的影响。结果表明:甘氨酸和D-丝氨酸均能增强mEPSC的NMDA受体成分,并呈现一定的浓度依赖性;
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