Changes in gastric mucosal microbiota in gastric carcinogenesis: a systematic review protocol
Introduction The human stomach is a complex and diverse microbial ecosystem. Consecutive alternations of gastric microbiota occur in gastric carcinogenesis, while the changing pattern during this process remains controversial across studies. We aim to identify the changes in the diversity and compos...
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| Format: | Article |
| Language: | English |
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BMJ Publishing Group
2021-03-01
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| Series: | BMJ Open |
| Online Access: | https://bmjopen.bmj.com/content/11/3/e045810.full |
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| author | Xinyu Zhao Ruoyu Ji Xinyuan Cao Yizhen Zhang Yingyun Yang |
| author_facet | Xinyu Zhao Ruoyu Ji Xinyuan Cao Yizhen Zhang Yingyun Yang |
| author_sort | Xinyu Zhao |
| collection | DOAJ |
| description | Introduction The human stomach is a complex and diverse microbial ecosystem. Consecutive alternations of gastric microbiota occur in gastric carcinogenesis, while the changing pattern during this process remains controversial across studies. We aim to identify the changes in the diversity and composition of gastric mucosal microbiota in gastric tumorigenesis.Methods and analysis We will search through PubMed, EMBASE and Cochrane databases, as well as conference proceedings and references of review articles for observational articles reporting either the relative abundance of bacteria at the phylum or genus level or at least one of the alpha diversity indexes respectively and clearly in both gastric cancer and non-cancer groups. Selection of studies and data extraction will be performed independently by two researchers. Disagreements will be resolved through discussion. Risk of bias will be assessed using the modified Newcastle-Ottawa Scale. Quantitative analyses will be performed using a random effects model, where the effect measurement will be expressed as the MD.Ethics and dissemination Ethical approval for this systematic review is not required, as the study is based exclusively on published documents and will not include any individual data. Findings of this study are expected to be disseminated through peer-reviewed journals or conference proceedings.PROSPERO registration number CRD42020206973. |
| format | Article |
| id | doaj-art-685a75b88c2d4c9b8b08eef4c8993e3c |
| institution | Kabale University |
| issn | 2044-6055 |
| language | English |
| publishDate | 2021-03-01 |
| publisher | BMJ Publishing Group |
| record_format | Article |
| series | BMJ Open |
| spelling | doaj-art-685a75b88c2d4c9b8b08eef4c8993e3c2024-11-17T19:10:09ZengBMJ Publishing GroupBMJ Open2044-60552021-03-0111310.1136/bmjopen-2020-045810Changes in gastric mucosal microbiota in gastric carcinogenesis: a systematic review protocolXinyu Zhao0Ruoyu Ji1Xinyuan Cao2Yizhen Zhang3Yingyun Yang42 Clinical Center for Metabolic Associated Fatty Liver Disease, Capital Medical University, Beijing, ChinaDepartment of Gastroenterology, Peking Union Medical College Hospital (PUMCH), Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Beijing, ChinaDepartment of Gastroenterology, Peking Union Medical College Hospital (PUMCH), Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Beijing, ChinaDepartment of Gastroenterology, Peking Union Medical College Hospital (PUMCH), Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Beijing, ChinaDepartment of Gastroenterology, Peking Union Medical College Hospital (PUMCH), Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Beijing, ChinaIntroduction The human stomach is a complex and diverse microbial ecosystem. Consecutive alternations of gastric microbiota occur in gastric carcinogenesis, while the changing pattern during this process remains controversial across studies. We aim to identify the changes in the diversity and composition of gastric mucosal microbiota in gastric tumorigenesis.Methods and analysis We will search through PubMed, EMBASE and Cochrane databases, as well as conference proceedings and references of review articles for observational articles reporting either the relative abundance of bacteria at the phylum or genus level or at least one of the alpha diversity indexes respectively and clearly in both gastric cancer and non-cancer groups. Selection of studies and data extraction will be performed independently by two researchers. Disagreements will be resolved through discussion. Risk of bias will be assessed using the modified Newcastle-Ottawa Scale. Quantitative analyses will be performed using a random effects model, where the effect measurement will be expressed as the MD.Ethics and dissemination Ethical approval for this systematic review is not required, as the study is based exclusively on published documents and will not include any individual data. Findings of this study are expected to be disseminated through peer-reviewed journals or conference proceedings.PROSPERO registration number CRD42020206973.https://bmjopen.bmj.com/content/11/3/e045810.full |
| spellingShingle | Xinyu Zhao Ruoyu Ji Xinyuan Cao Yizhen Zhang Yingyun Yang Changes in gastric mucosal microbiota in gastric carcinogenesis: a systematic review protocol BMJ Open |
| title | Changes in gastric mucosal microbiota in gastric carcinogenesis: a systematic review protocol |
| title_full | Changes in gastric mucosal microbiota in gastric carcinogenesis: a systematic review protocol |
| title_fullStr | Changes in gastric mucosal microbiota in gastric carcinogenesis: a systematic review protocol |
| title_full_unstemmed | Changes in gastric mucosal microbiota in gastric carcinogenesis: a systematic review protocol |
| title_short | Changes in gastric mucosal microbiota in gastric carcinogenesis: a systematic review protocol |
| title_sort | changes in gastric mucosal microbiota in gastric carcinogenesis a systematic review protocol |
| url | https://bmjopen.bmj.com/content/11/3/e045810.full |
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