Sex Differences in Colonic Mucosal Microbiome of Irritable Bowel Syndrome Patients Compared to Healthy Controls

Swapna Mahurkar-Joshi, Simer Shera, Jennifer Labus, Tien S Dong, Jonathan P Jacobs, Lin Chang
{"title":"Sex Differences in Colonic Mucosal Microbiome of Irritable Bowel Syndrome Patients Compared to Healthy Controls","authors":"Swapna Mahurkar-Joshi, Simer Shera, Jennifer Labus, Tien S Dong, Jonathan P Jacobs, Lin Chang","doi":"10.1101/2024.07.31.24311317","DOIUrl":null,"url":null,"abstract":"Background: Irritable bowel syndrome (IBS) is a female-predominant disorder of brain-gut\ninteractions. Our previous study on colonic mucosal microbiota demonstrated significant differences between IBS bowel habit subtypes and showed that gut microbiota is associated with abdominal pain in IBS patients. However, there is no consensus on sex-related differences in mucosal microbiota in IBS compared to healthy controls (HC). We aimed to identify sex-related differences in the mucosal microbes associated with IBS. Methods: Sigmoid mucosal biopsies were obtained from 97 Rome+ IBS patients and 54 healthy controls (HC). Mucosal microbiome was characterized using 16S rRNA sequencing and analyzed and general linear models were used to test group differences between IBS diagnosis and sex. Sex-specific relationships between mucosal microbiome and IBS symptoms were assessed using sparse partial least squares (sPLS) regression. Results: Beta diversity was significantly different between men and women overall (p=.03) but not within IBS or HC. IBS women showed lower abundance of Catenibacterium and Ruminoclstridium_9 and increased abundance of Bacteroides, Escherichia/Shigella, Lachnoclostridium and Ruminococcaceae compared to men with IBS (p<0.05). However, healthy women had a lower abundance of six distinct genera compared to healthy men. In women, higher IBS symptoms were associated with an increased abundance of bacteria including prevotella_9, and paraprevotella, however, in men, IBS symptoms were associated with increased abundances of genera such as Dialister. Interestingly, increased abundance of Desulfovibrio was associated with higher symptoms in women but lower symptoms in men. Conclusion: There are distinct sex-related differences in the mucosal microbiome between IBS and healthy participants supporting the importance of studying sex-specific mechanisms in IBS pathophysiology.","PeriodicalId":501258,"journal":{"name":"medRxiv - Gastroenterology","volume":"20 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"medRxiv - Gastroenterology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1101/2024.07.31.24311317","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

Background: Irritable bowel syndrome (IBS) is a female-predominant disorder of brain-gut interactions. Our previous study on colonic mucosal microbiota demonstrated significant differences between IBS bowel habit subtypes and showed that gut microbiota is associated with abdominal pain in IBS patients. However, there is no consensus on sex-related differences in mucosal microbiota in IBS compared to healthy controls (HC). We aimed to identify sex-related differences in the mucosal microbes associated with IBS. Methods: Sigmoid mucosal biopsies were obtained from 97 Rome+ IBS patients and 54 healthy controls (HC). Mucosal microbiome was characterized using 16S rRNA sequencing and analyzed and general linear models were used to test group differences between IBS diagnosis and sex. Sex-specific relationships between mucosal microbiome and IBS symptoms were assessed using sparse partial least squares (sPLS) regression. Results: Beta diversity was significantly different between men and women overall (p=.03) but not within IBS or HC. IBS women showed lower abundance of Catenibacterium and Ruminoclstridium_9 and increased abundance of Bacteroides, Escherichia/Shigella, Lachnoclostridium and Ruminococcaceae compared to men with IBS (p<0.05). However, healthy women had a lower abundance of six distinct genera compared to healthy men. In women, higher IBS symptoms were associated with an increased abundance of bacteria including prevotella_9, and paraprevotella, however, in men, IBS symptoms were associated with increased abundances of genera such as Dialister. Interestingly, increased abundance of Desulfovibrio was associated with higher symptoms in women but lower symptoms in men. Conclusion: There are distinct sex-related differences in the mucosal microbiome between IBS and healthy participants supporting the importance of studying sex-specific mechanisms in IBS pathophysiology.
与健康对照组相比,肠易激综合征患者结肠黏膜微生物组的性别差异
背景:肠易激综合征(IBS肠易激综合征(IBS)是一种以女性为主的脑肠互动障碍。我们之前对结肠粘膜微生物群的研究表明,肠易激综合征排便习惯亚型之间存在显著差异,并显示肠道微生物群与肠易激综合征患者的腹痛有关。然而,与健康对照组(HC)相比,IBS 患者粘膜微生物群的性别差异尚未达成共识。我们旨在确定与肠易激综合征相关的粘膜微生物的性别差异。研究方法从 97 名罗马+ IBS 患者和 54 名健康对照组 (HC) 中获取乙状结肠粘膜活检组织。使用 16S rRNA 测序对黏膜微生物组进行特征描述和分析,并使用一般线性模型检验肠易激综合征诊断与性别之间的群体差异。使用稀疏偏最小二乘法(sPLS)回归评估了粘膜微生物组与 IBS 症状之间的性别特异性关系。结果显示男性和女性的贝塔多样性总体上有明显差异(p=.03),但在 IBS 或 HC 中没有差异。与患有肠易激综合征的男性相比,患有肠易激综合征的女性的卡氏杆菌和反刍梭菌_9的丰度较低,而乳酸杆菌、埃希氏/志贺氏菌、拉氏梭菌和反刍球菌科的丰度较高(p<0.05)。然而,与健康男性相比,健康女性的六个不同菌属的丰度较低。在女性中,肠易激综合征症状的加重与包括prevotella_9和paraprevotella在内的细菌丰度增加有关,而在男性中,肠易激综合征症状的加重与Dialister等菌属的丰度增加有关。有趣的是,脱硫弧菌数量的增加与女性症状的加重有关,但与男性症状的减轻有关。结论肠易激综合征患者和健康患者的粘膜微生物组存在明显的性别差异,这证明了研究肠易激综合征病理生理学中性别特异性机制的重要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信