GC-MS代谢组学分析逍遥散干预抑郁模型大鼠盲肠代谢物组的变化规律

目的采用GC-MS代谢组学方法分析逍遥散干预抑郁模型大鼠盲肠组织代谢物组的变化规律。方法采用慢性温和不可预知应激(CUMS)程序对大鼠进行造模,以逍遥散及盐酸氟西汀(氟西汀)为干预药物,采用GC-MS方法分析大鼠盲肠组织代谢物组及其变化规律。化合物的结构通过NIST 05数据库检索及对照品指认确定,将数据预处理后导入SIMCA-P 13.0软件进行多元统计分析。结果 CUMS抑郁大鼠模型复制成功,代谢组学研究结果表明氟西汀及逍遥散干预后大鼠盲肠组织中丙氨酸、丝氨酸、谷氨酸等减少,氟西汀组棕榈酸、硬脂酸升高,且与模型组比较具有显著性差异(P0.05、0.01)。结论逍遥散干预后CUMS大鼠盲肠组织的代谢物组发生明显变化,该研究可为逍遥散抗抑郁作用机制研究提供依据。     

蜘蛛香环烯醚萜部位干预CUMS致抑郁小鼠脑组织的1H-NMR代谢组学分析

目的:利用代谢组学技术分析慢性温和不可预知应激(CUMS)抑郁模型小鼠脑组织样本,寻找与抑郁相关的差异代谢物,探讨蜘蛛香环烯醚萜部位(IEFV)可能的抗抑郁作用机制。方法:42只昆明小鼠随机分为6组,包括正常组,模型组,氟西汀组(2.5 mg·kg-1),IEFV低、中、高剂量组(给药剂量分别为5.73,11.47,22.94 mg·kg-1)。采用CUMS对小鼠造模,以IEFV及阳性药(氟西汀)为干预药物,用行为指标和生化指标进行药效学评价。采用核磁共振氢谱(1H-NMR)代谢组学技术分析IEFV对CUMS抑郁模型小鼠脑组织中内源性物质的影响,结合多变量统计分析方法来确认差异代谢物,并对差异代谢物参与的代谢通路进行富集。结果:造模后,小鼠的不动时间大幅度提高、蔗糖偏好率明显下降,兴奋性神经递质5-羟色胺和去甲肾上腺素显著下降,表明造模成功。给予IEFV和氟西汀后,小鼠不动时间、蔗糖偏好率和兴奋性神经递质向正常水平回调,提示给药后抑郁状态得到了一定程度的缓解。脑组织中内源性代谢物主成分分析(PCA)结果显示,模型组可与正常组明显分开,同时IEFV低、中、高剂量组和氟西汀组均显示有偏离模型组向正常组靠拢的趋势,与行为学结果一致。模型组与正常组进行正交偏最小二乘法-判别分析(OPLS-DA)得到了16个变化显著的差异代谢物,包括12个水溶性差异代谢物和4个脂溶性差异代谢物。通过MetPA数据库分析得到7条潜在靶标代谢通路,包括三羧酸循环(TCA),牛磺酸和亚牛磺酸的代谢,丙氨酸、天冬氨酸和谷氨酸代谢等。IEFV高剂量组可显著回调11种差异代谢物。结论:IEFV可能主要通过影响能量代谢,氨基酸代谢和神经递质水平发挥抗抑郁作用,可为IEFV抗抑郁作用机制的深入研究提供参考依据。     

文拉法辛和氟西汀抗抑郁作用机制和药效特点的代谢组学研究

目的 采用代谢组学技术比较并评价文拉法辛和氟西汀两种药物的抗抑郁药效及作用机制。方法 采用两种药物对慢性不可预知应激（CUMS）动物模型进行干预,观察大鼠的行为学变化;同时采集尿液,进行GC-MS代谢组学分析,并寻找生物标志物。结果 行为学数据显示,与模型组相比,文拉法辛和氟西汀组在行为学指标上均有显著性差异（P<0.05）,显示出抗抑郁作用。代谢组学分析结果显示,散点图中文拉法辛距离正常对照组较近,其抗抑郁效果较优,通过正常对照与模型组的载荷图寻找出了CUMS抑郁模型的15个潜在生物标志物,文拉法辛所能回调的标志物较氟西汀多。结论 两种药物都有明显的抗抑郁效果,且文拉法辛效果较优;运用代谢组学技术分析了两种药物对抑郁症有关标志物的回归调节作用并对其机制进行了初步比较研究,为药物药效的评价提供了新思路和新方法。     

基于~1H-NMR代谢组学复方柴归方干预抑郁模型大鼠血清代谢物规律分析

目的采用~1H-NMR代谢组学方法分析复方柴归方干预抑郁模型大鼠血清代谢物组的变化规律。方法采用慢性温和不可预知应激(CUMS)程序对大鼠进行造模,以复方柴归方及阳性药(文拉法辛)为干预药物,采用核磁共振方法对大鼠血清进行分析,数据预处理后导入SIMCA-P 14.1软件进行多元统计分析,从小分子代谢物角度对复方柴归方的抗抑郁药效进行验证,并寻找出潜在的疾病生物标志物和药物疗效标志物。结果 CUMS抑郁大鼠模型复制成功,代谢组学结果表明与模型组相比,CUMS抑郁大鼠经阳性药和复方柴归方干预后血清中异亮氨酸、氧化三甲胺和肌酸水平升高,N-乙酰糖蛋白、胆碱和葡萄糖水平降低,差异显著(P0.05、0.01)。结论复方柴归方干预后CUMS模型大鼠血清差异代谢物水平明显回调,该研究可为复方柴归方抗抑郁作用机制研究提供参考依据。     

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??OBJECTIVE To explore the mechanism of venlafaxine, paroxetine and St. John's wort extract by comparing the changes of endogenous metabolites profile in rat serum. METHODS These three drugs were employed to intervene in rats exposed to the chronic unpredictable mild stress (CUMS). Serum samples from all of rats were collected for a ¹H-NMR metabolomics analysis to find the differences of metabolic profile. RESULTS The resulting metabolic profiles demonstrated that these three antidepressants have an obvious difference effect on the endogenous metabolites in serum of the CUMS rats. It was also shown that the differential metabolites could be reversed in different degree. Six metabolites could be callback by venlafaxine while 4 metabolites by paroxetine and five metabolites by St. John's wort extract, in which lactate, choline, N-acetyl glycoprotein could be regulated to normal by all these three drugs. CONCLUSION The different drugs have difference regulation on the type and level of the endogenous metabolites, but also have similarities, which can provide a reference for the better understanding of the mechanism of antidepressant drugs.     

Xiaoyao San,a Chinese herbal formula,ameliorates depression-like behavior in mice through the AdipoR1/AMPK/ACC pathway in hypothalamus

Objective:Depression and metabolic disorders have overlapping psychosocial and pathophysiological causes.Current research is focused on the possible role of adiponectin in regulating common biological mechanisms,Xiaoyao San(XYS),a classic Chinese medicine compound,has been widely used in the treatment of depression and can alleviate metabolic disorders such as lipid or glucose metabolism disorders.However,the ability of XYS to ameliorate depression-like behavior as well as metabolic dysfunction ...     

基于代谢组学方法的姜黄素抗抑郁作用生物标志物初步筛查

该文运用代谢组学的技术手段寻找与姜黄素干预抑郁模型大鼠相关的潜在标志物,从而探究姜黄素用于抗抑郁的作用机制。选取健康雄性SD大鼠随机分成4组,采用慢性不可预知温和应激(CUMS)刺激造模,造模2周后灌胃姜黄素(200mg·kg~(-1))、文拉法辛(40 mg·kg~(-1))、空白组和模型组同时灌等体积的1%CMCNa生理盐水,每天1次,连续2周。采集大鼠血清并采用LC/MS-IT-TOF方法对各组血清代谢差异进行表征,利用多元统计分析方法筛选出可能的潜在生物标志物并分析其可能的代谢通路。在分别给予姜黄素和文拉法辛后,CUMS模型组大鼠的抑郁各项指标均有显著性改善(P0.05),但姜黄素和文拉法辛组之间则无明显差异;通过PCA和PLS-DA分析,经姜黄素或文拉法辛干预后,CUMS模型组大鼠体内的小分子代谢物水平体现出恢复正常的趋势,而且姜黄素组尤为明显;通过代谢组学技术手段,从中筛选得到11个与姜黄素抗抑郁功效相关的生物标志物,同时涉及到7条代谢通路。研究表明姜黄素具有确切的抗抑郁作用,其在宏观和微观层面均有体现,可与阳性药物文拉法辛相比;姜黄素在体内可能是通过影响甘油磷脂代谢、亚油酸代谢、戊糖和葡萄糖醛酸酯互变及醚脂类代谢等发挥抗抑郁功效,今后还需进一步探索。     

基于代谢组学技术的宁神灵抗抑郁作用机制研究＊

目的 采用代谢组学技术研究宁神灵抗抑郁的作用机制，确定抑郁症的生物标记物及宁神灵药效作用的关键通路。方法 参考Banasr的CUMS模型建立方法制备抑郁症大鼠模型。采用超高效液相-高分辨串联质谱（AB TripleTOF 5600⁺LC/MS/MS）系统分析抑郁症大鼠尿液代谢物含量及组成的变化，聚焦抑郁症核心生物标记物及关键代谢酶，并评价宁神灵抗抑郁的作用机制。结果 通过模式识别分析发现，抑郁症大鼠代谢发生显著差异代谢，其代谢轮廓在健康状态区域发生显著偏移。对影响代谢分布的生物标记物分析发现，主要涉及苯丙氨酸、酪氨酸、赖氨酸、甘氨酸、谷氨酰胺、组氨酸脯氨酸、泛酸、二羟基丙酮磷酸盐、3-羟基丁酸、肌酐、腺苷。其主要涉及氨基酰基-tRNA生物合成、氮代谢、硫胺素代谢、苯丙氨酸、酪氨酸和色氨酸生物合成等，给予宁神灵后其含量呈回调趋势。结论 宁神灵对抑郁症有很好的治疗作用，宁神灵可能通过氨基酸代谢、糖酵解、TCA循环和ATP生物合成过程中调节发挥抗抑郁的治疗作用。     

基于肝脏代谢组学的当归“活血解郁”作用机制研究

目的 研究当归Angelicae Sinensis Radix“解郁”功效与“活血”功效的相关性及机制。方法 采用慢性不可预见性温和应激（chronic unpredicted mild stress，CUMS）结合孤养复制大鼠抑郁模型，以行为学指标及血流变指标评价当归对CUMS大鼠抑郁样症状及血液黏度的调节作用，进行主成分分析和相关性分析量化抗抑郁指标和血流变指标间的相关性。应用¹H-NMR代谢组学技术检测CUMS大鼠肝脏中内源性代谢物的变化，指认相关差异代谢物并构建代谢通路。结果 造模4周后，大鼠体质量、糖水偏爱率、旷场实验穿越格数、直立次数均显著降低（P<0.01），高、中、低切变率下的全血黏度均显著升高（P<0.01）。给予当归干预后，大鼠的行为学指标和血流变指标均有不同程度的改善。相关性分析结果显示，行为学综合指标与血流变综合指标呈显著负相关。代谢组学结果显示，在筛选得到的19个潜在生物标志物中，当归能显著回调异亮氨酸、缬氨酸、乳酸、丙氨酸、柠檬酸等8种差异代谢物，涉及缬氨酸、亮氨酸和异亮氨酸合成，乙醛酸和二羧酸代谢及甘油脂代谢等5条代谢通路。结论 当归的“解郁”功效与其“活血”功效存在显著相关性，其机制可能与调节氨基酸代谢、碳水化合物代谢、脂质代谢等代谢途径有关。     

代谢组学研究复方柴归方超临界CO2提取物抗抑郁作用及其机制

采用小鼠悬尾试验（TST）、强迫游泳试验（FST）以及大鼠慢性温和不可预知应激（CUMS）模型评价复方柴归方超临界CO₂提取物（FFCGF）的抗抑郁作用;采用核磁共振代谢组学的方法,结合多元统计分析技术探讨FFCGF的抗抑郁作用机制。大鼠进行为期28 d的CUMS程序造模,药物干预28 d,与CUMS造模同时进行,造模过程中观察大鼠体重、糖水偏爱、穿越格数和直立次数的变化,造模结束后收集大鼠尿液,应用¹H-NMR技术结合多元统计分析方法分析大鼠尿液内源性代谢产物的变化规律,寻找潜在的生物标志物。结果显示FFCGF能明显减少小鼠悬尾试验和强迫游泳试验的不动时间,改善CUMS模型大鼠的体重、糖水偏爱、穿越格数和直立次数,说明FFCGF具有明确的抗抑郁作用。代谢组学结果显示空白组和模型组能明显区分,CUMS模型大鼠尿液中甘氨酸和丙酮酸含量显著升高,醋酸、琥珀酸、2-氧化戊二酸和柠檬酸含量显著降低（P < 0.05,0.01）,FFCGF能够明显调节CUMS程序引起的6种生物标志物的含量变化,使其恢复正常。FFCGF可能通过调节能量代谢、脂质代谢和氨基酸代谢发挥抗抑郁作用。     

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??OBJECTIVE To investigate the anti-depressant effect of schisandrin A in rats with depression caused by chronic unpredictable mild stress(CUMS)as well as the relevant mechanism. METHODS The depression-like rat model using CUMS was established. Rats were randomly divided into control, CUMS model, CUMS+fluoxetine (10 mg??kg^-1)and CUMS + schisandrin A (25, 50, 100 mg??kg^-1)groups. Drugs or vehicle were administrated after stress procedures for 21 d. Open-field test (OFT), sucrose preference tests (SPT)and forced swim test (FST)were used to evaluate the anti-depressant effects of schisandrin A. The reactive oxygen species (ROS)and prostaglandin E₂ (PGE₂) level as well as superoxide dismutase (SOD) and catalase (CAT)activities in hippocampus were determined by ELISA methods. IL-1??, TNF-??, and IL-10 expression were measured by real time qPCR and Western blot analysis. RESULTS Behavioral test indicated that crossing score and rearing score in OFT and sucrose preference index in SPT of model group were significantly lower than control group (P<0.01), while immobility time in FST was significantly increased (P<0.01). Compared with those in control group, the ROS and PGE₂ level increased significantly (P<0.01), SOD and CAT activities decreased significantly (P< 0.01),the mRNA and protein level of IL-1??, TNF-??, and IL-10 were increased significantly (P<0.05 or P<0.01)in rats of CUMS. CONCLUSION Schisandrin A and fluoxetine could ameliorate those changes induced by CUMS. Schisandrin A could improve the depression-like behaviors of rats induced by CUMS, of which the mechanism might involve the antioxidant and anti-inflammatory effects.     

逍遥散对CUMS大鼠海马CA1区PI3K/AKT信号通路的调节作用研究

目的：本研究旨在探讨逍遥散通过调节PI3K/AKT信号通路进而改善由谷氨酸引起的兴奋性损伤的机制。 方法：100只雄性SD大鼠随机分为正常组、模型组、逍遥散组和氟西汀组,利用CUMS方法造模成为抑郁模型大鼠,上述组别分别予以双蒸水、双蒸水、逍遥散药液、氟西汀溶液连续灌胃3周,后进行行为学观察及相关指标检测。采用旷场试验(OFT)和蔗糖偏好试验(SPT)评价逍遥散的抗抑郁作用;ELISA法测定海马组织中5-HT、NE水平;比色法检测各组大鼠海马CA1区谷氨酸水平; RT-qPCR检测海马CA1区NR2B、PI3K的mRNA水平;western blot检测海马CA1区NR2B、PI3K、P-AKT、Akt的蛋白表达。 结果：逍遥散的体内干预可显著提高抑郁大鼠海马组织中的5-HT、NE水平、降低海马CA1区谷氨酸水平、增加了海马CA1区NR2B、PI3K及P-AKT/AKT比值,显著改善了大鼠的抑郁症状。 结论:逍遥散可显著改善经慢性应激刺激后大鼠的抑郁样行为,其机制可能与降低谷氨酸兴奋性毒性,从而提高PI3K/Akt信号通路活性有关。     

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??OBJECTIVE To investigate the anti-depressant effect of icariin (Ica)in rats with depression caused by chronic unpredictable mild stress (CUMS) as well as the relevant mechanism. METHODS The depression-like rat model with chronic unpredicted mild stress was established. Rats were randomly divided into normal control, CUMS model, CUMS+Fluoxetine (10 mg??kg^-1) and CUMS + Ica(10, 20, 40 mg??kg^-1) groups. Drugs or vehicle were administrated after stress procedures for 21 d. Open-field test (OFT), sucrose preference tests (SPT)and forced swim test (FST) were used to evaluate the anti-depressant effects of Ica. The concentrations of the monoamine neurotransmitters including noradrenaline (NA), dopamine (DA), and 5-hydroxytryptamine (5-HT)in prefrontal cortex, hippocampus, and striatum were measured by HPLC-ECD. RESULTS Behavioral test indicated that crossing score and rearing score in OFT and sucrose preference index in SPT of model group were significantly lower than normal control group(P<0.01), while immobility time in FST was significantly increased (P<0.01). Compared with those in normal control group, the neurotransmitters including NA, DA and 5-HT were significantly decreased (P<0.01) in prefrontal cortex, hippocampus, and striatum in rats of CUMS. Ica and fluoxetine reversed those changes induced by CUMS. CONCLUSION Ica improves the depression-like behaviors of rats induced by CUMS, of which the mechanism might be increasing the contents of monoamine neurotransmitters including NA, DA and 5-HT.     

逍遥散及其功效拆方对CUMS抑郁模型大鼠行为学的影响

目的: 探讨逍遥散及其功效拆方水煎液对慢性不可预见性轻度应激(CUMS)抑郁模型大鼠行为活动和学习记忆能力的影响,初步揭示方中体现不同治法的功效药组的作用特点。 方法: 采用慢性不可预知温和应激+孤养方法制备CUMS大鼠抑郁模型,观察逍遥散(30 g·kg^-1)、疏肝药(即柴胡+薄荷,5.25 g·kg^-1)、养血药(即当归+白芍,9 g·kg^-1)、疏肝药+健脾药(即柴胡+薄荷+白术+茯苓+生姜+炙甘草,21 g·kg^-1)、养血药+健脾药(即当归+白芍+白术+茯苓+生姜+炙甘草,24.75 g·kg^-1)、阿米替林(10 mg·kg^-1)连续ig给药4周,观察对模型大鼠体重、糖水偏爱程度、自主活动和Morris水迷宫指标的影响,并设空白和模型对照组。 结果: 与模型组比较,逍遥散组、疏肝药组、养血药组、疏肝药+健脾药组、养血药+健脾药组均能显著提高模型大鼠的体重增长度、糖水偏爱百分比及自主活动量,缩短Morris水迷宫测试中定位航行的潜伏期,增加空间搜索时目标象限运动百分比与有效区域进入次数。各药物组之间比较,逍遥散组、疏肝药组、疏肝药+健脾药组的改善作用优于养血药组和养血药+健脾药组,其中疏肝药组在连续给药2周时,其对模型动物行为学的改善作用甚至优于逍遥散全方与疏肝药+健脾药组。 结论: 逍遥散对CUMS抑郁模型大鼠表现出良好的抗抑郁作用。在其功效拆方中,柴胡+薄荷药组所代表的疏肝治法是体现逍遥散抗抑郁效应的主要治法,当归+白芍药组所代表的养血治法则发挥重要的辅助作用。     

Metabonomic Study of Genkwa Flos–induced Hepatotoxicity and Effect of Herb‐Processing Procedure on Toxicity

A urinary metabonomic approach based on ultraperformance liquid chromatography coupled with mass spectrometry (UPLC‐MS) was developed to study the metabolic disturbances caused by the administration of Genkwa Flos (GF) to rats. Potential biomarkers of GF‐induced toxic effects were screened out and identified, and the underlying toxicological mechanism as well as the detoxification of vinegar‐processing procedure on this herb was discussed. Urine samples were analyzed by the established UPLC‐MS method. With the help of serum biochemistry and histopathology results, metabolic disturbances induced by the exposure to GF and the detoxification of processing procedure were confirmed. The differences in the metabolic profiles of healthy and treated rats were clearly discriminated with the principal component analysis of the chromatographic data. Eight significantly changed metabolites were identified and interpreted as biomarkers for the hepatotoxicity and detoxification of processing procedure. This study indicated that a UPLC‐MS‐based metabonomic analysis of urine samples could be considered as a promising tool to predict the hepatotoxicity induced by the GF and the detoxification of traditional vinegar‐processing procedure on this herb. Copyright © 2012 John Wiley & Sons, Ltd.     

Metabolomics study of biochemical changes in the serum and articular synovium tissue of moxibustion in rats with collagen-induced arthritis: 艾灸对胶原诱导性关节炎大鼠血清和关节滑膜组织生化改变的代谢组学研究

ObjectiveTo demonstrate the rheumatoid arthritis (RA) mechanisms by determining the biochemical changes. To investigate the therapeutic mechanism of moxibustion in RA-model rats using a gas chromatography-mass spectrometry (GC–MS) metabolomics approach.MethodsA total of 24 rats were divided into three groups as follows: normal control group, model group and moxibustion group. Rats in model group and moxibustion group were set up collagen-induced arthritis (CIA) model. Rats in moxibustion group were treated by moxibustion. After 3 weeks of intervention, right ankle joint, serum and articular synovium samples were collected. Right ankle joint samples were used for histopathological evaluation between 3 groups to get the pathological changes of tissues and cells. Serum and articular synovium samples were used to analyze the changed metabolites of moxibustion on RA rats by the GC–MS based metabolomics.ResultsTreatment of moxibustion not only significantly increased the weight of CIA rats, reduced the swelling of hind paw, arthritic scores, IL-1β, TNF-α but also improved histopathological evaluation in right ankle joint samples. Sixteen significantly altered metabolites were found in RA rats as potential biomarkers of arthritis. Thirteen metabolites, significantly adjusted by moxibustion to help relieve arthritis, were selected out as biomarkers of antiarthritic mechanism of moxibustion, which were mainly involved in phenylalanine, tyrosine and tryptophan biosynthesis, glycine, serine and threonine metabolism, phenylalanine metabolism, alanine, aspartate and glutamate metabolism, glyoxylate and dicarboxylate metabolism and aminoacyl-tRNA biosynthesis.ConclusionsWe have indicated moxibustion treatment is able to resist inflammation in CIA rats effectively. Using GC–MS metabolomics technique, we detect novel metabolites in the moxibustion antiarthritic process, which may aid in advanced understanding of arthritis and therapeutic mechanism of moxibustion.     

开心解郁汤对抑郁症模型大鼠脑皮质5-HT水平和海马与大脑皮层5-HTA亚型受体 mRNA表达的影响

目的:观察具有培元开郁作用的“开心解郁汤”对大鼠脑皮质中5-羟色胺(5-HT)水平和海马及大脑皮层5-HT1A受体和5 -HT2A受体mRNA表达以及行为学能力的影响.方法:SD大鼠随机分为正常对照组、抑郁症组、抑郁症+中药组、抑郁症+西药组,采用慢性不可预见性温和应激方法(CUMS)造成抑郁症大鼠模型.造模同时开始给药,中药组给予开心解郁汤(按生药量计,22 g·kg-1,西药组给予盐酸氟西汀2.4 mg·kg-1,其余各组给同体积生理盐水,每日1次,连续ig给药22 d.分别于实验前、抑郁1,8,15,22 d记录大鼠体重;并观察大鼠行为学变化.于22 d后分取脑皮质,应用高效液相色谱技术分析脑皮质中5 -HT水平变化;于22 d后分取脑皮质和海马区,采用实时荧光定量PCR技术,测定大鼠海马及脑皮质中5-HT1A和5-HT2A受体mRNA水平改变.结果:与正常对照组相比,抑郁造模各组体重增长明显减慢,体重增加数和糖水消耗量均下降,旷场实验测定水平活动和垂直活动次数均下降(P＜0.01,P＜0.05),给与中药干预后,大鼠体重增长有所增快,与抑郁模型组比较有显著差异.糖水消耗量、水平活动和垂直活动次数均较模型组明显增加(P＜0.01,P＜0.05);同时抑郁造模后5-HT总体水平呈现下降,给予中药和西药治疗后5-HT水平有显著升高(P＜0.05).模型组大鼠海马组织中5-HT1AR mRNA水平下降,而5-HT2AR mRNA水平升高,中药及西药治疗后均可不同程度地降低;而在脑皮质中5-HT1AR和5-HT2AR mRNA水平的改变则呈现相反的变化.结论:CUMS可引起大鼠行为学改变并致体重减轻和行为学改变,造成大鼠抑郁模型.开心解郁汤可以降低海马中5-HT1A受体mRNA和脑皮质中5-HT2A受体mRNA水平,同时升高海马中5-HT2A受体mRNA和脑皮质中5-HT1A受体mRNA水平,而部分实现其对抑郁症的治疗作用.     

基于粪便代谢组学技术的逍遥散抗抑郁作用机制研究

目的应用核磁共振氢谱(1H-NMR)代谢组学技术研究慢性温和不可预知应激(CUMS)抑郁大鼠粪便中内源性代谢物及代谢通路的变化,并评价逍遥散的改善作用,探讨其抗抑郁作用机制。方法使用CUMS造模程序建立抑郁模型,采用1H-NMR技术结合多变量统计分析方法,研究CUMS抑郁大鼠粪便代谢物谱的变化、鉴定相关代谢标志物并构建代谢通路。结果在抑郁大鼠粪便样本中共筛选10种与抑郁相关的潜在生物标志物。与对照组比较,模型组天冬酰胺、天冬氨酸、乳酸和丙酸水平显著升高(P0.05、0.01),而苯丙氨酸、酪氨酸、谷氨酸、谷氨酰胺、丙氨酸和脯氨酸水平显著降低(P0.05、0.01)。与模型组相比,逍遥散能显著升高苯丙氨酸、酪氨酸、谷氨酸、谷氨酰胺和脯氨酸的水平,能显著降低天冬酰胺、乳酸和丙酸的水平。与对照组比较,CUMS抑郁大鼠粪便中6条代谢通路发生了显著变化:包括(1)氨基酰t RNA生物合成,(2)丙氨酸、天冬氨酸和谷氨酸代谢,(3)精氨酸和脯氨酸代谢,(4)谷氨酸和谷氨酰胺代谢,(5)苯丙氨酸代谢以及(6)丙酮酸代谢。而逍遥散可显著回调(2)、(3)、(4)、(5)和(6)条代谢通路。结论逍遥散可能通过调控氨基酸代谢、糖代谢和肠道微生物的代谢等途径发挥抗抑郁作用。