当前位置:首页>郑州>IF:5.1 郑州大学重磅发现!16SrRNA + 代谢组学揭秘大蒜素治痛风新机制,肠道菌群 + 丁酸调控肠道 - 关节轴,横扫炎症与高尿酸!

IF:5.1 郑州大学重磅发现!16SrRNA + 代谢组学揭秘大蒜素治痛风新机制,肠道菌群 + 丁酸调控肠道 - 关节轴,横扫炎症与高尿酸!

  • 2026-03-31 10:34:47
IF:5.1 郑州大学重磅发现!16SrRNA + 代谢组学揭秘大蒜素治痛风新机制,肠道菌群 + 丁酸调控肠道 - 关节轴,横扫炎症与高尿酸!

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痛风是因嘌呤代谢紊乱或尿酸排泄障碍致单钠尿酸盐沉积的关节病,与高尿酸血症直接相关。全球患病人数持续增长,患者超千万,且呈年轻化、沿海高于内陆、城市高于农村的特点。其易引发关节破坏、肾损伤,还常合并肥胖、糖尿病等代谢综合征,因饮食结构改变等因素,已成为沉重的公共卫生负担。

9月,该研究发表于《Drug Design, Development and Therapy》,通过构建 GA 大鼠模型,结合 16S rRNA 测序、代谢组学等技术,探究大蒜素的治疗作用及机制。结果表明,大蒜素可重塑肠道菌群(升高乳杆菌属),增加丁酸生成,通过抑制 XOD 活性、氧化应激及 NLRP3 inflammasome 激活,改善 GA 症状及肾关节功能,证实其通过肠道 - 关节轴发挥治疗作用。

文献分享   

中文标题:大蒜素通过调节肠关节轴、降低XOD活性、抑制氧化应激和抑制NLRP3炎症小体激活,从而缓解痛风性关节炎

发表:Drug Design, Development and Therapy

发表时间:2025年9月

影响因子:5.1

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研究背景   

痛风性关节炎(GA)与高尿酸血症及尿酸盐结晶沉积密切相关,发病率逐年上升,但现有药物存在疗效有限、副作用等问题。大蒜活性成分大蒜素具抗氧化、抗炎等特性,且肠道 - 关节轴与 GA 发病相关,需探究大蒜素通过调控该轴治疗 GA 的机制。

研究方法   

构建 GA 大鼠模型,分为对照组、模型组、大蒜素高低剂量组等;采用 16S rRNA 测序分析肠道菌群变化,非靶向代谢组学检测代谢物;通过粪便微生物移植(FMT)验证肠道菌群的介导作用;分离培养成纤维样滑膜细胞(FLS),结合流式细胞术、Western blot 等检测氧化应激及 NLRP3 inflammasome 相关指标。

    研究结果   

    1

    大蒜素改善 GA 大鼠病理状态,保护肾关节功能

    大蒜素可显著降低 GA 大鼠关节肿胀度及皮肤温度,改善自发活动能力(图 1B、表 1-3),降低血清尿酸及黄嘌呤氧化酶(XOD)活性(图 1F-H)。肾功指标显示,大蒜素可降低血清尿素氮、肌酐水平,改善肾组织病理损伤(图 2A-E);关节组织 HE 染色显示其减少炎性细胞浸润及滑膜增生(图 3G),减少关节液中尿酸结晶沉积(图 3F)。

        2

        大蒜素抑制 GA 大鼠氧化应激及 NLRP3 inflammasome 激活

        模型组滑膜组织 ROS、MDA 水平升高,SOD、GSH 降低,大蒜素治疗可逆转该变化(图 4A-E)。Western blot 及 ELISA 证实,大蒜素显著下调 NLRP3、ASC、Caspase-1 及 IL-1β 等炎症因子表达,抑制 NLRP3 inflammasome 激活(图 4F-J)。

          3

          大蒜素重塑 GA 大鼠肠道菌群及代谢物谱

          16S rRNA 测序显示,大蒜素显著提高肠道菌群 α 多样性,增加乳杆菌属丰度,降低拟杆菌门等丰度(图 5C-N)。代谢组学分析发现,大蒜素可升高短链脂肪酸(尤其是丁酸)水平(图 6J-M),且丁酸是核心差异代谢物。

          4

          肠道菌群及丁酸介导大蒜素的治疗作用

          FMT 实验证实,移植大蒜素处理组的粪便菌群可改善 GA 大鼠症状,降低氧化应激及炎症反应(图 7)。体外实验显示,丁酸可抑制 MSU 刺激的 FLS 中 ROS 生成及 NLRP3 inflammasome 激活(图 8E-K),明确丁酸是大蒜素调控肠道 - 关节轴的关键代谢物。

            文章小结   

            本研究证实,大蒜素通过调控肠道 - 关节轴治疗 GA。其可重塑肠道菌群(增加乳杆菌属),升高丁酸水平,进而抑制 XOD 活性、氧化应激及 NLRP3 inflammasome 激活,改善关节及肾脏损伤,为 GA 治疗提供了安全有效的天然药物及新机制。

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            1. CONNECT:[ UseTime:0.000725s ] mysql:host=127.0.0.1;port=3306;dbname=i460;charset=utf8mb4
            2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000840s ]
            3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000318s ]
            4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000281s ]
            5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000526s ]
            6. SELECT * FROM `set` [ RunTime:0.000196s ]
            7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000541s ]
            8. SELECT * FROM `article` WHERE `id` = 482667 LIMIT 1 [ RunTime:0.001636s ]
            9. UPDATE `article` SET `lasttime` = 1777064725 WHERE `id` = 482667 [ RunTime:0.001924s ]
            10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000305s ]
            11. SELECT * FROM `article` WHERE `id` < 482667 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000459s ]
            12. SELECT * FROM `article` WHERE `id` > 482667 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000399s ]
            13. SELECT * FROM `article` WHERE `id` < 482667 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000669s ]
            14. SELECT * FROM `article` WHERE `id` < 482667 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000820s ]
            15. SELECT * FROM `article` WHERE `id` < 482667 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002319s ]
            0.087207s