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IF9.7!恭喜南京医科大学顾爱华团队用五张图成功拿下双一区!

  • 2026-05-09 13:44:19
IF9.7!恭喜南京医科大学顾爱华团队用五张图成功拿下双一区!

研究核心亮点

1

农药 - 菌群 - 高血压三角关联

首次在人群中系统证实血清农药暴露与高血压风险显著相关,明确农药暴露通过改变肠道菌群结构、影响代谢与炎症通路,参与高血压发生发展。

2

菌群介导与交互放大风险

发现肠道菌群在农药致高血压中起关键介导作用,高农药暴露联合特定菌丰度升高,可使高血压风险大幅上升,揭示菌群 - 环境交互机制。

3

多组学 + 机器学习精准预测

结合宏基因组、孟德尔随机化与机器学习构建预测模型,AUC 达 0.897,为高血压环境风险筛查与早期预警提供高效可行工具。

引言

📣高血压患病率持续攀升,环境与菌群因素备受关注。

📣农药可扰乱肠道微生态并影响代谢炎症,而菌群失衡直接参与血压调控。

📣本研究旨在揭示农药暴露、肠道菌群与高血压的关联及介导机制,为高血压防控提供新靶点与策略。

📣一起来深度拆解这项研究的核心思路与逻辑!

本文研究创新性较强,结构严谨。关注生信解析!你的下一篇高分论文,说不定就从这里启航!

研究结果

研究背景

高血压是全球高发慢性病,环境化学物暴露是重要诱因。农药广泛使用带来持续暴露风险,同时肠道菌群紊乱与高血压密切相关。但农药、肠道菌群与高血压三者的关联及交互机制在人群中尚不明确,缺乏大样本实证与因果证据,亟需开展整合研究填补空白。

研究方法

纳入 218 名江苏成人,检测血清农药浓度与粪便宏基因组,构建环境风险评分;采用多因素回归、中介分析、孟德尔随机化验证因果;用 Lasso 筛选特征,训练 13 种机器学习模型,以 AUC 等指标评估预测效能。

研究结果

01.基线特征与农药暴露:

本研究纳入 218 名受试者,169 人提供粪便样本用于菌群分析。研究人群平均年龄 62 岁,高血压患病率超八成,患者多伴随 BMI 偏高、蔬果摄入少及多项代谢指标异常。血清中检出 47 种高频农药,14 种与高血压风险上升相关,团队据此构建环境风险评分,证实农药复合暴露会显著增加高血压患病可能。

图1.农药暴露与高血压及肠道微生物群组成的关联分析。

02.农药暴露与肠道微生物群的关联:

研究按农药暴露水平将人群分为两组,高暴露组的农药含量明显更高。通过菌群网络与 PERMANOVA 分析发现,农药暴露和高血压状态会显著改变肠道菌群结构。其中苯达松对菌群影响最大,高暴露组特定细菌丰度明显改变,提示农药暴露是干扰肠道微生态的重要因素。

03.高血压中肠道微生物群组成和网络的改变:

研究发现,高血压患者的肠道菌群结构与正常人存在明显差异,虽然整体丰富度变化不大,但群落结构发生了显著分离。菌群的主要分布特征与血压、BMI 等临床指标密切相关。

具体表现为,有益菌(如产短链脂肪酸菌)减少,而潜在促炎菌增多。菌群网络分析显示,健康人的菌群关联紧密、网络庞大,而高血压患者的菌群网络处于 “破碎” 状态,模块分散,提示微生态稳定性下降。

图2.高血压患者与健康对照组微生物相互作用组的比较。

04.肠道微生物群与农药暴露对高血压风险的相互作用:

研究探索了农药暴露、肠道菌群和高血压三者间的相互作用。通过逻辑回归发现,一种名为长链杆菌的细菌会显著影响农药相关的高血压风险。

分层分析显示,当这种细菌含量较高时,农药暴露评分(ERS)导致高血压的风险急剧升高,风险值超过 9 倍。这表明该菌群可能像“放大器”一样,让个体对农药危害更敏感,共同推动了高血压的发生。

图3.ERS与肠道微生物群对高血压风险的交互作用。

05.肠道微生物群介导农药暴露与高血压之间的关联:

本研究通过线性回归发现,农药暴露评分越高,肠道菌群改变越明显,有益菌普遍减少,部分有害菌增多。功能分析显示高血压组多条代谢与炎症通路显著上调。双向中介分析证实,肠道菌群在农药致高血压中起重要介导作用,多种梭菌与特定菌种是关键介导节点。

图4.肠道微生物组在环境暴露与高血压关联中的功能整合。

06.机器学习模型的开发与解释:

本研究基于农药暴露、肠道菌群与临床指标,用 13 种机器学习模型预测高血压。经 Lasso 筛选 32 个关键特征,神经网络模型效果最优,AUC 达 0.897,预测可靠且临床实用性强。SHAP 分析显示,特定菌群、BMI 和总胆红素是判断高血压风险的最重要指标。

图5.基于SHapley加法解释(SHAP)的全局和局部模型解释。

文章小结

本研究证实血清中苯达松等多种农药暴露会升高高血压风险,构建的环境风险评分可有效评估复合暴露危害。农药暴露会改变肠道菌群结构与功能,特定菌属在其中起关键介导与交互放大作用。孟德尔随机化提示部分菌群与高血压存在因果关联,基于农药与菌群特征的机器学习模型可高效预测高血压风险,为防控提供新依据。

玩转数据分析,复刻高分科研思路?生信解析,医学 SCI 全流程服务,等你来约!

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  1. CONNECT:[ UseTime:0.000958s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001656s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000746s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000681s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001357s ]
  6. SELECT * FROM `set` [ RunTime:0.000629s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001498s ]
  8. SELECT * FROM `article` WHERE `id` = 541853 LIMIT 1 [ RunTime:0.001081s ]
  9. UPDATE `article` SET `lasttime` = 1779335108 WHERE `id` = 541853 [ RunTime:0.001491s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000590s ]
  11. SELECT * FROM `article` WHERE `id` < 541853 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001081s ]
  12. SELECT * FROM `article` WHERE `id` > 541853 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000908s ]
  13. SELECT * FROM `article` WHERE `id` < 541853 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001720s ]
  14. SELECT * FROM `article` WHERE `id` < 541853 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002193s ]
  15. SELECT * FROM `article` WHERE `id` < 541853 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002634s ]
0.187135s