Changes in gut microbiota after gastric cancer surgery: a prospective longitudinal study

BackgroundThis study was designed to characterize gut microbiota changes of the patients with gastric cancer before and after the gastrectomy during their hospital staying periods.Methods16S ribosomal RNA (rRNA) gene sequencing was used to evaluate differences in gut microbiota among patients with g...

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Main Authors: Yuhua He, Shilin Gao, Lili Jiang, Jie Yang
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-01-01
Series:Frontiers in Oncology
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Online Access:https://www.frontiersin.org/articles/10.3389/fonc.2024.1533816/full
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author Yuhua He
Shilin Gao
Lili Jiang
Jie Yang
author_facet Yuhua He
Shilin Gao
Lili Jiang
Jie Yang
author_sort Yuhua He
collection DOAJ
description BackgroundThis study was designed to characterize gut microbiota changes of the patients with gastric cancer before and after the gastrectomy during their hospital staying periods.Methods16S ribosomal RNA (rRNA) gene sequencing was used to evaluate differences in gut microbiota among patients with gastric cancer before and after the gastrectomy by comparing gut microbiota α diversity, β diversity, and structure composition at different taxonomic levels.ResultsA total of 120 fecal specimens were collected from 60 patients. There was no significant difference in Chao1 index, Shannon index, and Simpson index before and after gastrectomy (all P > 0.05). At the phylum level, the gut microbiota in the gastrectomy group showed less abundance of Bacteroidota, Synergistota, and Verrucomicrobiota but with higher abundance of Campylobacter, Actinobacteria, and Bacillota. At the genus level, the gut microbiota in the gastrectomy group showed less abundance of flora Bacteroides, Faecalibacterium, Blautia, and Lachnospiraceae nk4a136 group but with higher abundance of Campylobacter, Porphyromona, Finegordia, Dialist, Anaerococcus, and Corynebacterium.ConclusionsThere was no significant change in the diversity of intestinal flora before and after surgery. However, significant changes in the structure of intestinal flora before and after surgery were occurred.
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spelling doaj-art-1d62a91aa47a4681a3389e0acef5c4782025-01-22T05:19:24ZengFrontiers Media S.A.Frontiers in Oncology2234-943X2025-01-011410.3389/fonc.2024.15338161533816Changes in gut microbiota after gastric cancer surgery: a prospective longitudinal studyYuhua HeShilin GaoLili JiangJie YangBackgroundThis study was designed to characterize gut microbiota changes of the patients with gastric cancer before and after the gastrectomy during their hospital staying periods.Methods16S ribosomal RNA (rRNA) gene sequencing was used to evaluate differences in gut microbiota among patients with gastric cancer before and after the gastrectomy by comparing gut microbiota α diversity, β diversity, and structure composition at different taxonomic levels.ResultsA total of 120 fecal specimens were collected from 60 patients. There was no significant difference in Chao1 index, Shannon index, and Simpson index before and after gastrectomy (all P > 0.05). At the phylum level, the gut microbiota in the gastrectomy group showed less abundance of Bacteroidota, Synergistota, and Verrucomicrobiota but with higher abundance of Campylobacter, Actinobacteria, and Bacillota. At the genus level, the gut microbiota in the gastrectomy group showed less abundance of flora Bacteroides, Faecalibacterium, Blautia, and Lachnospiraceae nk4a136 group but with higher abundance of Campylobacter, Porphyromona, Finegordia, Dialist, Anaerococcus, and Corynebacterium.ConclusionsThere was no significant change in the diversity of intestinal flora before and after surgery. However, significant changes in the structure of intestinal flora before and after surgery were occurred.https://www.frontiersin.org/articles/10.3389/fonc.2024.1533816/fullgastric cancergut microbiotahigh-throughput sequencingsurgerybacteria
spellingShingle Yuhua He
Shilin Gao
Lili Jiang
Jie Yang
Changes in gut microbiota after gastric cancer surgery: a prospective longitudinal study
Frontiers in Oncology
gastric cancer
gut microbiota
high-throughput sequencing
surgery
bacteria
title Changes in gut microbiota after gastric cancer surgery: a prospective longitudinal study
title_full Changes in gut microbiota after gastric cancer surgery: a prospective longitudinal study
title_fullStr Changes in gut microbiota after gastric cancer surgery: a prospective longitudinal study
title_full_unstemmed Changes in gut microbiota after gastric cancer surgery: a prospective longitudinal study
title_short Changes in gut microbiota after gastric cancer surgery: a prospective longitudinal study
title_sort changes in gut microbiota after gastric cancer surgery a prospective longitudinal study
topic gastric cancer
gut microbiota
high-throughput sequencing
surgery
bacteria
url https://www.frontiersin.org/articles/10.3389/fonc.2024.1533816/full
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AT shilingao changesingutmicrobiotaaftergastriccancersurgeryaprospectivelongitudinalstudy
AT lilijiang changesingutmicrobiotaaftergastriccancersurgeryaprospectivelongitudinalstudy
AT jieyang changesingutmicrobiotaaftergastriccancersurgeryaprospectivelongitudinalstudy