Mucosal microbial microenvironment in early gastric neoplasia and non‐neoplastic gastric disease. Issue 11 (29th June 2021)

• Record Type: Journal Article
• Authors: Li, Fudong; Zhu, He; Tao, Ke; Xia, Yan; Liu, Mingqing; Wang, Yu; Sun, Yu; Cao, Tingting; Chai, Jiannan; Ni, Fengming; Shi, Bing; Xu, Hong
• Is Part Of: Journal of gastroenterology and hepatology. Volume 36:Issue 11(2021)
• Page Start: 3092
• Page End: 3101
• Publication Date: 2021-06-29
• Subjects: chronic gastritis -- early gastric cancer (EGC) -- fundic gland polyps (FGPs) -- gastric microbiome -- low‐grade intraepithelial neoplasia (LGIN); Gastroenterology -- Periodicals; Digestive organs -- Diseases -- Periodicals; Liver -- Diseases -- Periodicals; Gastroenterology -- Periodicals; Liver Diseases -- Periodicals; 616.33
• DOI: 10.1111/jgh.15565
• Languages: English
• ISSNs: 0815-9319

Abstract

Abstract: Background and Aim: The biological characterization of microbial environment in early gastric cancer (EGC), other than Helicobacter pylori, is limited. This study aimed to explore the microbial microenvironment in chronic gastritis (CG), fundic gland polyps (FGPs), low‐grade intraepithelial neoplasia (LGIN), and EGC. Methods: 16S‐rRNA gene sequencing and bioinformatic analysis were performed on 63 individuals with 252 mucosal biopsies or endoscopic submucosal dissection margin samples from endoscopy. Results: The microbiota in gastric LGIN functions analogously to EGC in terms of functional prediction. Neoplastic lesions showed a significant difference to CG or FGPs in beta diversity of the microbiota. Bacteria genera including Paracoccus, Blautia, Barnesiella, Lactobacillus, Thauera, Collinsella were significantly enriched in gastric neoplastic mucosa (LGIN and EGC) compared with non‐neoplastic tissues (CG and FGPs). While Pseudomonas and Kingella were depleted in neoplastic tissues. FGPs showed a distinctive microbial network system that negatively interacted with Helicobacter . Conclusions: In terms of the mucosal microbial microenvironment, gastric LGIN and EGC showed no significant difference as early neoplastic lesions. We observed a coordinated microbial microenvironment that correlated negatively with Helicobacter .