Med Sci Monit:针灸治疗抑郁的机制

2017-10-31 MedSci MedSci原创

重度抑郁障碍(MDD)是一种世界范围内反复发生的精神疾病。既往的研究已经证明谷氨酸能神经递质系统是抗抑郁治疗的靶点,因为它参与生理条件下的突触可塑性和认知功能,且在病理条件下具有潜在的神经兴奋毒性。胶质细胞谷氨酸转运体EAAT2存在于90%的谷氨酸能神经传递中。因此,来自广州中医药大学第二附属医院针灸科的研究人员探讨了慢性轻度应激抑郁模型 (chronic mild unpredictable s

重度抑郁障碍(MDD)是一种世界范围内反复发生的精神疾病。既往的研究已经证明谷氨酸能神经递质系统是抗抑郁治疗的靶点,因为它参与生理条件下的突触可塑性和认知功能,且在病理条件下具有潜在的神经兴奋毒性。胶质细胞谷氨酸转运体EAAT2存在于90%的谷氨酸能神经传递中。因此,来自广州中医药大学第二附属医院针灸科的研究人员探讨了慢性轻度应激抑郁模型 (chronic mild unpredictable stress,CUMS) 中针灸对抑郁行为和EAAT2的影响。

研究人员将56只雄性SD大鼠随机分成正常组、模型组、针刺组和药物组。大鼠模型组、针刺组、和利鲁唑组中大鼠暴露于慢性轻度不可预见性应激21天。之后,针刺组采用电针针刺合谷穴和太冲穴连续5天/周,共4周;利鲁唑组大鼠接受利鲁唑(赛诺菲,j20140092)4mg/kg,口服,4周。

研究发现,大鼠接受针刺和利鲁唑治疗后,在糖水偏好测试中的蔗糖消耗量明显增加,并新奇抑制摄食实验中表现出食物摄取量升高和延迟时间缩短。抑郁行为的改善与阳性细胞、蛋白的增多,以及胶质细胞谷氨酸转运体EAAT2的mRNA在海马和前额叶的表达的增加都是一致的。

本研究结果表明,在慢性轻度应激抑郁模型大鼠中,针灸和利鲁唑均能提高蔗糖的消耗,减轻延迟和增加食物摄取。在应激大鼠食物摄入量。然而,与利鲁唑相比,针灸后达到抗抑郁效果较晚,因为它可能需要通过多次刺激才能促进EAAT2的表达。增强海马和前额叶胶质细胞谷氨酸转运体EAAT2或是一个针灸抗抑郁的潜在机制。

原始出处:

Luo D, Ma R,et al.Mechanism Underlying Acupuncture-Ameliorated Depressive Behaviors by Enhancing Glial Glutamate Transporter in Chronic Unpredictable Mild Stress (CUMS) Rats.Med Sci Monit. 2017 Jun 23;23:3080-3087.

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