5,7,3′,4′,5′-五甲氧基黄酮--一种从 Murraya paniculata (L.) Jack 提取的黄酮类单体--通过 A2AR/Gephyrin/GABRA2 途径缓解焦虑症

IF 6.1 2区 医学 Q1 CHEMISTRY, MEDICINAL
Wenli Ma, Dayun Sui, Weilun Sun, Ping Yu, Yuangeng Li, Meiqi Guo, Huifeng Wang, Xiaoze Zhang, Xiaofeng Yu, Wenwen Fu, Huali Xu
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引用次数: 0

摘要

5,7,3′,4′,5′-pentamethoxyflavone (PMF)是从一种从墨累雅(Murraya paniculata (L.) Jack)叶片中提取的单体,有镇静和催眠特性的报道。然而,PMF 在焦虑症发展过程中的作用仍不确定。我们利用慢性不可预知的温和刺激(CUMS)建立了一个焦虑模型。昆明小鼠被随机分配到以下几组:对照组、CUMS组、PMF组(50毫克/千克)、PMF组(100毫克/千克)和地西泮组(3毫克/千克)。使用高架加迷宫(EPM)试验和开阔地试验(OFT)评估 PMF 的抗焦虑作用。酶联免疫吸附试验(ELISA)试剂盒用于分析海马血清中皮质酮(CORT)、5-羟色胺(5-HT)、γ-氨基丁酸(GABA)和环磷酸腺苷(cAMP)的水平。研究人员进行了高通量-16S rRNA 测序,以调查其对肠道微生物群组成的影响。随后,对GABA能突触相关蛋白的表达进行了Western印迹检测。PMF有效缓解了CUMS诱导的焦虑样行为。进一步研究发现,PMF治疗可改善下丘脑-垂体-肾上腺(HPA)轴的功能障碍,并提高海马中的5-羟色胺和GABA水平。值得注意的是,PMF能够通过增强肠道微生物群的物种组成和作用于腺苷a2a受体(A2AR)/鹅膏蕈素/γ-氨基丁酸A受体α2(GABRA2)途径来维持GABA能突触的稳定性,这揭示了PMF抗焦虑作用的一种先前未被认识的机制。这些研究结果表明,PMF能增强A2AR的表达,保护GABA能突触的稳定性,并通过调节微生物群的组成来减轻焦虑。因此,它有望成为一种抗焦虑剂。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
5,7,3′,4′,5′‐Pentamethoxyflavone, a Flavonoid Monomer Extracted From Murraya paniculata (L.) Jack, Alleviates Anxiety Through the A2AR/Gephyrin/GABRA2 Pathway
The sedative and hypnotic properties of 5,7,3′,4′,5′‐pentamethoxyflavone (PMF), a monomer extracted from the leaves of Murraya paniculata (L.) Jack, have been reported. However, the role of PMFs in the development of anxiety remains uncertain. An anxiety model was developed using chronic unpredictable mild stimulation (CUMS). Kunming mice were randomly allocated to the following groups: control, CUMS, PMF (50 mg/kg), PMF (100 mg/kg), and diazepam (3 mg/kg). The anxiolytic effects of PMFs were evaluated using elevated plus maze (EPM) test and open field test (OFT). Enzyme‐linked immunosorbent assay (ELISA) kits were used to analyze the serum levels of corticosterone (CORT), 5‐hydroxytryptamine (5‐HT), gamma‐aminobutyric acid (GABA), and cyclic adenosine monophosphate (cAMP) in the hippocampus. High‐throughput‐16S rRNA sequencing was performed to investigate its effect on the composition of the gut microbiota. Subsequently, western blotting was performed to assess the expression of GABAergic synaptic‐associated proteins. PMF effectively mitigated CUMS‐induced anxiety‐like behavior. Further examination revealed that PMF treatment ameliorated dysfunction of the hypothalamic–pituitary–adrenal (HPA) axis and increased 5‐HT and GABA levels in the hippocampus. Notably, the ability of PMF to maintain the stability of GABAergic synapses by enhancing the species composition of the gut microbiota and acting on the adenosine a2a receptor (A2AR)/gephyrin/gamma‐aminobutyric acid A receptor alpha 2 (GABRA2) pathway revealed a previously unrecognized mechanism for the anxiolytic effect of PMF. These findings suggest that PMF enhances the expression of A2AR, preserves GABAergic synaptic stability, and reduces anxiety by modulating the microbiota composition. Thus, it holds promise as an anxiolytic agent.
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来源期刊
Phytotherapy Research
Phytotherapy Research 医学-药学
CiteScore
12.80
自引率
5.60%
发文量
325
审稿时长
2.6 months
期刊介绍: Phytotherapy Research is an internationally recognized pharmacological journal that serves as a trailblazing resource for biochemists, pharmacologists, and toxicologists. We strive to disseminate groundbreaking research on medicinal plants, pushing the boundaries of knowledge and understanding in this field. Our primary focus areas encompass pharmacology, toxicology, and the clinical applications of herbs and natural products in medicine. We actively encourage submissions on the effects of commonly consumed food ingredients and standardized plant extracts. We welcome a range of contributions including original research papers, review articles, and letters. By providing a platform for the latest developments and discoveries in phytotherapy, we aim to support the advancement of scientific knowledge and contribute to the improvement of modern medicine.
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