通络醒脑泡腾片抗痴呆的尿液代谢组学研究

Anti-dementia effect of Tongluo Xingnao effervescent tablet based on urinary metabonomics

通络醒脑泡腾片(TLXNET)是源自古方芎归汤加减而来的专利处方,具有改善认知功能的作用,然而关于它对Aβ25-35海马注射痴呆模型大鼠的尿液代谢产物影响及抗痴呆作用并不明确。该实验以Aβ25-35海马注射痴呆大鼠模型为研究对象,采用代谢组学技术研究空白大鼠、Aβ25-35海马注射痴呆模型大鼠和通络醒脑泡腾片干预大鼠尿液中代谢物组时量的轨迹变化和对应关系,确定其特征性代谢标志物,并基于此标志物的代谢轨迹变化阐明通络醒脑泡腾片的抗痴呆作用。实验结果初步确定了吲哚-5,6-醌、4-羟基苯基丙酮酸(4-HPPA)、皮质醇和3-硫代乳酸等4个特征性代谢标志物,它们主要参与体内多巴胺神经系统、糖皮质激素及能量代谢途径,且通络醒脑泡腾片对4个内源性生物标记物代谢轨迹的扰动具有明显的回调作用。该实验表明Aβ25-35海马注射痴呆大鼠模型有明确的尿液代谢特征性内源性生物标志物,通络醒脑泡腾片可以通过回调其代谢轨迹的扰动而达到抗痴呆的作用。

Tongluo Xingnao effervescent tablet （TLXNET） is a patented prescription, which comes from modified Xionggui decoc- tion and can improve cognitive function. However, its effect on the urine metabolites and anti-dementia mechanism in the dementia model rats induced by hippocampal injection with Aβ25-35 remains unclear. The experiment focused on the changes in trajectory and in- ter-relationship among the urinary metabolite of rats in the blank group, Aβ25-35 hippocampal injection dementia model group and the TLXNET intervention group, in order to determine theirs characteristic metabolic markers and explain the anti-dementia effect of TLX- NET base on the change of metabolic trajectory of these bio-markers. According to the experimental results, 5,6-indolequinone, 4-hydroxyphenyl pyruvic acid （4-HPPA）, cortisol and 3-thiosulfate lactic were preliminarily identified as the characteristic metabolic markers. They mainly participate in dopamine system, glueoeortieoids and energy metabolic pathways. TLXNET can apparently down- regulate the disturbances of metabolic trajectory of the four bio-markers. The experiment indicates that the dementia model induced by injecting Aβ25-3 into hippocampus has its characteristic endogenous metabolic markers in urine, and ELXNET can ameliorate dementia by down-regulating the disturbances of metabolic trajectory.