姜黄素抗抑郁作用及其机理研究

目的研究姜黄素在抗抑郁方面的作用及其作用机理。方法通过小鼠抑郁模型和小鼠获得性绝望模型观察姜黄素对小鼠抑郁的改善作用;按单胺假说理论观察姜黄素在单胺加强、抑制单胺类递质重摄取与单胺氧化酶抑制方面的作用。结果姜黄素50mg·kg-1以上剂量能显著性改善由利血平、丁苯那嗪引起的小鼠抑郁体征,提示姜黄素有明显的抗抑郁作用。机理研究表明姜黄素没有直接的单胺加强作用;对单胺类递质去甲肾上腺素(NE)、5-羟色胺(5-HT)、多巴胺(DA)重摄取抑制作用不明显;对盐酸色胺引起的大鼠前肢痉挛行为有明显增强作用。结论姜黄素表现为抑制单胺氧化酶(MAO),增强单胺类递质作用而发挥抗抑郁作用。

Antidepression Action of Curcumin and Its Mechanism

Objective To study the antidepression action of curcumin and to explore its mechanism. Methods Mouse reserpine-induced depression model and mouse tetrabenazine-induced acquired despair model were used to observe the effect of curcumin on relieving depression. According to the hypothesis of monoamine, the effect of curcumin on activating monoamine, and inhibiting reuptake of monoamine neurotransmitters and monoamine oxidase inhibitor (MAOI) were observed. Results Curcumin in the dose of 50 mg/kg and more can relieve melancholic symptoms in mice induced by reserpine and tetrabenazine. Curcumin had no direct activation on monoamine either had no obvious inhibition on reuptake of monoamine neurotransmitters of noradrenalin, 5-hydroxytriptamine and dopamine . However, Curcumin had an obvious effect on improving rat forelimb spasm induced by tryptamine hydrochloride. Conclusion Curcumin acts like a kind of monoamine oxidase inhibitor, which exerts antidepression action by inhibiting monoamine oxidase activity and increasing the concentration of monoamine neurotransmitter in brain.