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Zhu Y, Zeng X, Zhang A, Lu B, Wu M, Liu H, Zhu F, Lin R. Correlation of tongue coating thickness with microinflammatory state and oral microbiome in maintenance hemodialysis patients. J Oral Microbiol 2025; 17:2488054. [PMID: 40330867 PMCID: PMC12054557 DOI: 10.1080/20002297.2025.2488054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2024] [Revised: 12/31/2024] [Accepted: 03/12/2025] [Indexed: 05/08/2025] Open
Abstract
Aim This study investigated the correlation between tongue coating thickness (TCT), micro-inflammatory state (MIS), and oral microbiome in maintenance hemodialysis (MHD) patients. Methods Forty MHD patients (20 thin-tongue coating [BTZ], 20 thick-tongue coating [HTZ]) and 15 healthy controls (DZZ) were enrolled. Blood microinflammatory markers were analyzed in all patients. Saliva samples from 15 HTZ, 15 BTZ, and 15 DZZ underwent 16S rRNA sequencing. Results HTZ patients exhibited higher microinflammatory marker levels than BTZ. Oral microbiome species richness in DZZ surpassed that of the MHD groups, with distinct structural differences, particularly between HTZ and DZZ. HTZ showed higher abundances of Actinobacillus, Peptostreptococcus, and Lachnospiraceae NK4A136 group than BTZ. Correlation analysis revealed a positive correlation between the levels of IL-6 and TNF-α and the abundance of Fusobacterium, but a negative correlation with Streptococcus. Additionally, the TNF-α level positively correlated with Campylobacter. Conclusion Thick tongue coating in MHD patients is associated with elevated microinflammation and altered oral microbiome, suggesting a link between inflammation and microbial dysbiosis.
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Affiliation(s)
- Yanqin Zhu
- Department of Nephrology, Hangzhou TCM Hospital of Zhejiang Chinese Medical University, Hangzhou City, China
| | - Xueyan Zeng
- Department of Nephrology, Sichuan Second Hospital of Traditional Chinese Medicine, Chengdu City, China
| | - Aiping Zhang
- Department of Nephrology, Hangzhou TCM Hospital of Zhejiang Chinese Medical University, Hangzhou City, China
| | - Bin Lu
- Department of Nephrology, Hangzhou TCM Hospital of Zhejiang Chinese Medical University, Hangzhou City, China
| | - Mengqi Wu
- Department of Nephrology, Hangzhou TCM Hospital of Zhejiang Chinese Medical University, Hangzhou City, China
| | - Hong Liu
- Department of Nephrology, Hangzhou TCM Hospital of Zhejiang Chinese Medical University, Hangzhou City, China
| | - Fenggui Zhu
- Department of Nephrology, Hangzhou TCM Hospital of Zhejiang Chinese Medical University, Hangzhou City, China
| | - Riyang Lin
- Department of Nephrology, Hangzhou TCM Hospital of Zhejiang Chinese Medical University, Hangzhou City, China
- Department of Nephrology, Key Laboratory of Kidney Disease Prevention and Control Technology, Hangzhou City, China
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Wan Y, Wu Y, Yang Y, Zhou Q, Li Y, Wang D, Zhang D, Na K, Liu L, He Y, Chen H, Huang M, Cai L, You D, Ma L. Epidemiological status of family-based Helicobacter pylori infection in Yunnan Province, China. BMC Gastroenterol 2025; 25:309. [PMID: 40301812 PMCID: PMC12039176 DOI: 10.1186/s12876-025-03806-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2024] [Accepted: 03/20/2025] [Indexed: 05/01/2025] Open
Abstract
BACKGROUND The status of family-based H. pylori infection in Yunnan Province is unknown. This study is the first family-based epidemiological survey of H. pylori in the province, aiming to provide new insights into the status of family-based H. pylori infections in Yunnan Province as well as in the country as a whole. METHODS Between 2021 and 2023, 1,176 families with 2,947 family members were tested for H. pylori in six cities in Yunnan Province with different geographic locations and economic status, to assess the status of H. pylori infection, and to clarify the related factors and modes of transmission by means of a questionnaire survey. RESULTS In Yunnan Province, the H. pylori infection rate was 31.46% (927/2947) in people and 54.59% (642/1176) in families.On the individual side, living outside of southern Yunnan (e.g., Central OR 1.41, 95% CI 1.10-1.81), having a family member living together for ≥ 1 year (OR 2.43, 95% CI 1.49-3.95), being ≥ 18 years old (e.g., 18-44 years old: OR 3.51, 95% CI 1.98-6.23), and gastrointestinal discomfort within the last 1 year (OR 1.25, 95% CI 1.04-1.50) were independent risk factors for H. pylori infection in the study population in Yunnan Province, whereas an education level of college/university and above (OR 0.62, 95% CI 0.48-0.79), and a gastroscopy within 5 years (OR 0.58, 95% CI 0.46-0.73) were independent protective factors for their H. pylori infection. In terms of family, living outside of southern Yunnan (e.g., Central OR 1.52, 95% CI 1.07-2.18), and having ≥ 3 people living together in the family (e.g., 3-4 people: OR 2.04, 95% CI 1.52-2.72) were independent risk factors for H. pylori infection in study families in Yunnan Province, whereas an annual household income of ≥ 100,000 ( OR 0.68, 95% CI 0.51-0.90), total household living area ≥ 60 m2 (OR 0.62, 95% CI 0.39-0.97), the use of separate meals for intra-household gatherings (OR 0.56, 95% CI 0.38-0.85), and the use of communal spoons and chopsticks (OR 0.38, 95% CI 0.28-0.52) were the independent protective factorse. CONCLUSION The risk factors of Family-Based H. pylori infection in Yunnan province were closely related to demographic characteristics, personal and family living habits. Close contact with infected family members may be the main cause of transmission. Family-based control of H. pylori infection should be regarded in clinical practice.
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Affiliation(s)
- Ying Wan
- Department of Gastroenterology, The First Affiliated Hospital, Yunnan Institute of Digestive Disease, Yunnan Clinical Research Center for Digestive Diseases, Kunming Medical University, 650032, Kunming, China
- Department of Gastroenterology, The First People's Hospital of Kunming, 650051, Kunming, China
| | - Yongmei Wu
- School of Public Health, Kunming Medical University, Yunnan Provincial Key Laboratory of Public Health and Biosafety, 650500, Kunming, China
| | - Yunran Yang
- University of Toronto, M5S 2E4, Toronto, Canada
| | - Qingqing Zhou
- Department of Gastroenterology, The First Affiliated Hospital, Yunnan Institute of Digestive Disease, Yunnan Clinical Research Center for Digestive Diseases, Kunming Medical University, 650032, Kunming, China
| | - Yu Li
- Department of Gastroenterology, The First Affiliated Hospital, Yunnan Institute of Digestive Disease, Yunnan Clinical Research Center for Digestive Diseases, Kunming Medical University, 650032, Kunming, China
| | - Da Wang
- Department of Gastroenterology, The First Affiliated Hospital, Yunnan Institute of Digestive Disease, Yunnan Clinical Research Center for Digestive Diseases, Kunming Medical University, 650032, Kunming, China
| | - Dan Zhang
- Department of Gastroenterology, Dali Prefecture People's Hospital, 671003, Dali, China
| | - Kunpeng Na
- Department of Neurosurgery, The First Affiliated Hospital of Kunming Medical University, 650032, Kunming, China
| | - Lan Liu
- School of Public Health, Kunming Medical University, Yunnan Provincial Key Laboratory of Public Health and Biosafety, 650500, Kunming, China
| | - Yule He
- Department of Gastroenterology, The First Affiliated Hospital, Yunnan Institute of Digestive Disease, Yunnan Clinical Research Center for Digestive Diseases, Kunming Medical University, 650032, Kunming, China
| | - Hang Chen
- Department of Gastroenterology, The First Affiliated Hospital, Yunnan Institute of Digestive Disease, Yunnan Clinical Research Center for Digestive Diseases, Kunming Medical University, 650032, Kunming, China
| | - Minshan Huang
- Department of Gastroenterology, The First Affiliated Hospital, Yunnan Institute of Digestive Disease, Yunnan Clinical Research Center for Digestive Diseases, Kunming Medical University, 650032, Kunming, China
| | - Le Cai
- School of Public Health, Kunming Medical University, Yunnan Provincial Key Laboratory of Public Health and Biosafety, 650500, Kunming, China.
| | - Dingyun You
- School of Public Health, Kunming Medical University, Yunnan Provincial Key Laboratory of Public Health and Biosafety, 650500, Kunming, China.
| | - Lanqing Ma
- Department of Gastroenterology, The First Affiliated Hospital, Yunnan Institute of Digestive Disease, Yunnan Clinical Research Center for Digestive Diseases, Kunming Medical University, 650032, Kunming, China.
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Lin L, Li W, Yan L, Guo X, Zhuang M, Chen F, Ye W. Comparison of gastric microbiota in patients with different gastric lesions in high and low risk areas of gastric cancer. BMC Microbiol 2025; 25:202. [PMID: 40205356 PMCID: PMC11984132 DOI: 10.1186/s12866-025-03926-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2024] [Accepted: 03/24/2025] [Indexed: 04/11/2025] Open
Abstract
BACKGROUND Variation in gastric cancer (GC) incidence across different geographic areas persists, even when there are similar prevalence rates of Helicobacter pylori (H. pylori) infection. An extensive examination of the gastric microbiota in populations from both high- and low-risk regions of GC could help explain the geographical disparities in GC incidence. METHODS This study enrolled a total of 130 patients with superficial gastritis (SG) and precancerous lesions of gastric cancer (PLGC) from a high-risk area for GC and 205 patients from a low-risk area. Gastric microbial profiling was performed using 16 S rRNA gene sequencing to analyze differences in microbial composition between regions and lesion types. RESULTS The study revealed significant differences in gastric microbial profiles between patients from high- and low-risk regions, particularly in PLGC patients. PLGC patients from the low-risk region exhibited higher microbial richness than those from the high-risk area, with marked distinctions in microbial community structure between the two regions. Specific differences in microbial composition were observed at the phylum and genus levels between different regions. Six bacterial genera, including Selenomonas and Peptostreptococcus, were identified as enriched in PLGC patients from the high-risk area. Additionally, there was a noticeable imbalance in the microbiota of the gastric mucosal lining during the progression of gastric lesions. CONCLUSION This comparative analysis highlights the potential impact of the gastric microbiome in the development of GC and suggests that regional differences in microbial profiles may provide clues to the varying incidence rates of GC.
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Affiliation(s)
- Liying Lin
- Department of Gastroenterology and Fujian Institute of Digestive Disease, Fujian Medical University Union Hospital, Fuzhou, 350001, Fujian, China
| | - Wanxin Li
- Department of Epidemiology and Health Statistics & Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, 350000, China
| | - Lingjun Yan
- Department of Neurosurgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, Fujian, China
- Department of Neurosurgery, Binhai Campus of the First Affiliated Hospital, National Regional Medical Center, Fujian Medical University, Fuzhou, 350212, Fujian, China
| | - Xiaoxiong Guo
- Department of Gastroenterology and Fujian Institute of Digestive Disease, Fujian Medical University Union Hospital, Fuzhou, 350001, Fujian, China
| | - Mingkai Zhuang
- Department of Gastroenterology and Fujian Institute of Digestive Disease, Fujian Medical University Union Hospital, Fuzhou, 350001, Fujian, China
| | - Fenglin Chen
- Department of Gastroenterology and Fujian Institute of Digestive Disease, Fujian Medical University Union Hospital, Fuzhou, 350001, Fujian, China.
| | - Weimin Ye
- Department of Epidemiology and Health Statistics & Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, 350000, China.
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, 17177, Sweden.
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Fan Y, Chen X, Shan T, Wang N, Han Q, Ren B, Cheng L. Polymicrobial interactions of Helicobacter pylori and its role in the process of oral diseases. J Oral Microbiol 2025; 17:2469896. [PMID: 40013013 PMCID: PMC11864007 DOI: 10.1080/20002297.2025.2469896] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2024] [Revised: 01/12/2025] [Accepted: 02/14/2025] [Indexed: 02/28/2025] Open
Abstract
Objective Helicobacter pylori (H. pylori) infection affects approximately 50% of the global population. The predominant route of H. pylori transmission is through the oral pathway, making the oral cavity highly significant in its infection. This review focuses on the relationship between H. pylori and oral diseases, the influence of H. pylori infection on the oral microbiota, and the potential mechanisms involving certain oral pathogens. Method To identify relevant studies, we conducted searches in PubMed, Google Scholar using keywords such as "Helicobacter pylori," "oral diseases, " "oral microorganisms, " without any date restrictions. The retrieved publications were subject to a review. Results H. pylori infection is positively correlated with the occurrence of various oral diseases, such as dental caries, periodontitis, and oral lichen planus. H. pylori may affect the oral microbiota through various mechanisms, and there exists an interactive relationship between H. pylori and oral bacteria, including Streptococcus, Porphyromonas gingivalis (P. gingivalis), and Candida albicans (C. albicans). Conclusions H. pylori infection has a close relationship with certain oral diseases. H. pylori modulates oral microflora diversity and structure, while eradication therapy and medications have varying impacts on oral microbiota.
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Affiliation(s)
- Yufei Fan
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xi Chen
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Tiantian Shan
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Nanxi Wang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qi Han
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Pathology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Biao Ren
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Lei Cheng
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Cui S, Liu X, Han F, Zhang L, Bu J, Wu S, Wang J. Helicobacter pylori CagA+ strains modulate colorectal pathology by regulating intestinal flora. BMC Gastroenterol 2025; 25:54. [PMID: 39910460 PMCID: PMC11796129 DOI: 10.1186/s12876-025-03631-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Accepted: 01/20/2025] [Indexed: 02/07/2025] Open
Abstract
AIM This article aims to investigate the role of Helicobacter Pylori (HP) CagA+ strains affected colorectal lesion via gut microbiota. METHOD 6-week C57BL/6J mice were divided into: (a) HP CagA+ group undergoing HP CagA+ strains administration by gavage at 0.2 mL for 10 days; (b) HP CagA- group undergoing HP CagA- strains administration by gavage at 0.2 mL for 10 days; (c) control group intragastrically given 0.2 mL of brian heart infusion (BHI) medium for 10 days. Gastric mucosa was collected for Giemsa staining, and colorectal mucosa was for hematoxylin and eosin (H&E) staining, 16 S ribosomal RNA (rRNA) sequencing and immunohistochemistry for Major Histocompatibility Complex (MHC). Colon tissues and serum from caudal vein was collected for quantification of interleukin (IL)-6, IL-8, IL10 and tumor necrosis factor (TNF-α). RESULTS Mice with HP CagA+ infection developed loss of some resident cells and inflammation infiltration in colorectal mucosa, and increased Giemsa-positive cells in gastric tissue. Also, MHC II-positive cells were increased in colorectal tissue in HP CagA+ strains infection. HP CagA+ infection cause increase of TNF-α, IL-6, IL-8 and IL-10 in the serum. Meanwhile, HP CagA+ stainis evoked gut microbiota dysbiosis which was characterized by altered microbiome distribution, reduction in Front-to-Back (F/B ratio), decreased α-diversity metric (Chao1 and Shannon). In β-diversity, gut microbiota in control and HP CagA+ groups showed the significant distance based on UniFrac distance. Cag group was enriched a higher abundance of Staphylococcus and Corynebacterium, while control subjects were enriched in Marinifilaceae and Odoribacter. CONCLUSION HP CagA+ strains are capable of causing gut microbiota dysbiosis to develop destruction of intestinal barrier, and it may affect the development of colorectal cancer by increasing colonization of Staphylococcus and Corynebacterium.
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Affiliation(s)
- Shasha Cui
- Clinical Laboratory, Binzhou People's Hospital, No.515, Huangheqi Road, Bincheng District, Binzhou, Shandong Province, 256610, P. R. China
| | - Xinqiang Liu
- Department of Oncology, Binzhou People's Hospital, Binzhou, Shandong Province, 256610, P. R. China
| | - Fengxia Han
- Clinical Laboratory, Binzhou People's Hospital, No.515, Huangheqi Road, Bincheng District, Binzhou, Shandong Province, 256610, P. R. China
| | - Lu Zhang
- Department of Oncology, Binzhou People's Hospital, Binzhou, Shandong Province, 256610, P. R. China
| | - Jingjing Bu
- Clinical Laboratory, Binzhou People's Hospital, No.515, Huangheqi Road, Bincheng District, Binzhou, Shandong Province, 256610, P. R. China
| | - Sainan Wu
- Clinical Laboratory, Binzhou People's Hospital, No.515, Huangheqi Road, Bincheng District, Binzhou, Shandong Province, 256610, P. R. China
| | - Jiafen Wang
- Clinical Laboratory, Binzhou People's Hospital, No.515, Huangheqi Road, Bincheng District, Binzhou, Shandong Province, 256610, P. R. China.
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Wang Y, Qiu X, Chu A, Chen J, Wang L, Sun X, Wang B, Yuan Y, Gong Y. Advances in 16S rRNA-Based Microbial Biomarkers for Gastric Cancer Diagnosis and Prognosis. Microb Biotechnol 2025; 18:e70115. [PMID: 39992270 PMCID: PMC11849407 DOI: 10.1111/1751-7915.70115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2024] [Revised: 02/05/2025] [Accepted: 02/10/2025] [Indexed: 02/25/2025] Open
Abstract
Gastric cancer (GC) is a malignant tumour with high morbidity and mortality worldwide, and there is an urgent need for early diagnosis and precision treatment. In recent years, the role of microbiota in the occurrence and development of GC has drawn extensive attention. Particularly, the in-depth study of GC-related microbiota by 16S rRNA sequencing technology has offered valuable tools and new perspectives for exploring the microbial characteristics of GC patients. This review systematically summarises the microbial diversity and composition of GC and non-GC samples based on 16S rRNA data, outlines the progress in identifying GC-related microbial biomarkers, explores the potential mechanisms by which diagnostic microbial biomarkers influence the development of GC, and reflects on the limitations of present studies. By integrating the current evidence, this review intends to offer a new theoretical foundation and further direction for the clinical translation of microbiota research in the diagnosis and treatment of GC.
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Affiliation(s)
- Yingying Wang
- Tumor Etiology and Screening Department of Cancer Institute and General SurgeryThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of Cancer Etiology and Prevention in Liaoning Education DepartmentThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of GI Cancer Etiology and Prevention in Liaoning ProvinceThe First Hospital of China Medical UniversityShenyangChina
| | - Xunan Qiu
- Tumor Etiology and Screening Department of Cancer Institute and General SurgeryThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of Cancer Etiology and Prevention in Liaoning Education DepartmentThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of GI Cancer Etiology and Prevention in Liaoning ProvinceThe First Hospital of China Medical UniversityShenyangChina
| | - Aining Chu
- Tumor Etiology and Screening Department of Cancer Institute and General SurgeryThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of Cancer Etiology and Prevention in Liaoning Education DepartmentThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of GI Cancer Etiology and Prevention in Liaoning ProvinceThe First Hospital of China Medical UniversityShenyangChina
| | - Jijun Chen
- Tumor Etiology and Screening Department of Cancer Institute and General SurgeryThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of Cancer Etiology and Prevention in Liaoning Education DepartmentThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of GI Cancer Etiology and Prevention in Liaoning ProvinceThe First Hospital of China Medical UniversityShenyangChina
| | - Lu Wang
- Tumor Etiology and Screening Department of Cancer Institute and General SurgeryThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of Cancer Etiology and Prevention in Liaoning Education DepartmentThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of GI Cancer Etiology and Prevention in Liaoning ProvinceThe First Hospital of China Medical UniversityShenyangChina
| | - Xiaohu Sun
- Tumor Etiology and Screening Department of Cancer Institute and General SurgeryThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of Cancer Etiology and Prevention in Liaoning Education DepartmentThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of GI Cancer Etiology and Prevention in Liaoning ProvinceThe First Hospital of China Medical UniversityShenyangChina
| | - Bengang Wang
- Tumor Etiology and Screening Department of Cancer Institute and General SurgeryThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of Cancer Etiology and Prevention in Liaoning Education DepartmentThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of GI Cancer Etiology and Prevention in Liaoning ProvinceThe First Hospital of China Medical UniversityShenyangChina
| | - Yuan Yuan
- Tumor Etiology and Screening Department of Cancer Institute and General SurgeryThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of Cancer Etiology and Prevention in Liaoning Education DepartmentThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of GI Cancer Etiology and Prevention in Liaoning ProvinceThe First Hospital of China Medical UniversityShenyangChina
| | - Yuehua Gong
- Tumor Etiology and Screening Department of Cancer Institute and General SurgeryThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of Cancer Etiology and Prevention in Liaoning Education DepartmentThe First Hospital of China Medical UniversityShenyangChina
- Key Laboratory of GI Cancer Etiology and Prevention in Liaoning ProvinceThe First Hospital of China Medical UniversityShenyangChina
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Zhou JK, Zheng Y, Wang YP, Ji R. Prevalence and associated risk factors of Helicobacter pylori infection in community households in Lanzhou city. World J Gastroenterol 2024; 30:5018-5031. [PMID: 39713168 PMCID: PMC11612857 DOI: 10.3748/wjg.v30.i47.5018] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 09/12/2024] [Accepted: 09/23/2024] [Indexed: 11/26/2024] Open
Abstract
BACKGROUND Helicobacter pylori (H. pylori) infection exhibits a familial clustering phenomenon. AIM To investigate the prevalence of H. pylori infection, identify associated factors, and analyze patterns of transmission within families residing in the community. METHODS From July 2021 to September 2021, a total of 191 families (519 people) in two randomly chosen community health service centers in the Chengguan District of Lanzhou in Gansu Province, were recruited to fill out questionnaires and tested for H. pylori infection. Individuals were followed up again from April 2023 and June 2023 to test for H. pylori infection. The relationship between variables and H. pylori infection was analyzed using logistic regression and generalized linear mixed models. RESULTS In 2021, the individual-based H. pylori infection rate was found to be 47.0% (244/519), which decreased to 38.1% (177/464) in 2023. Additionally, the rate of individual-based H. pylori new infection was 22.8% (55/241). The family-based H. pylori infection rate in 2021 was 76.9% (147/191), which decreased to 67.1% (116/173) in 2023, and the rate of family-based H. pylori new infection was 38.6% (17/44). Individual H. pylori infection was positively correlated with age, body mass index (BMI), eating food that was excessively hot, frequent acid reflux, bloating, and halitosis symptoms, and negatively correlated with family size and nut consumption. New individual H. pylori infection was positively correlated with BMI, other types of family structures, drinking purified water, and frequent heartburn symptoms, while negatively correlated with the use of refrigerators and following a regular eating schedule. A larger living area was an independent protective factor for H. pylori infection in households. Frequently consuming excessively hot food and symptoms of halitosis were independent risk factors for H. pylori infection in individuals; frequent consumption of nuts was an independent protective factor for H. pylori infection. Other types of family structure, drinking purified water, and frequent heartburn symptoms were independent risk factors for new individual H. pylori infection; the use of a refrigerator was an independent protective factor for new H. pylori infections. CONCLUSION The household H. pylori infection rate in Lanzhou is relatively high and linked to socio-demographic factors and lifestyles. Eradication efforts and control of related risk factors are recommended in the general population.
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Affiliation(s)
- Ju-Kun Zhou
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of Gastroenterology, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Gansu Province Clinical Research Center for Digestive Diseases, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Ya Zheng
- Department of Gastroenterology, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Gansu Province Clinical Research Center for Digestive Diseases, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Yu-Ping Wang
- Department of Gastroenterology, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Gansu Province Clinical Research Center for Digestive Diseases, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Rui Ji
- Department of Gastroenterology, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Gansu Province Clinical Research Center for Digestive Diseases, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
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Liu HH, Lin TT, Zhang QJ, Zhang L, Fang JY, Hu L. Effect of Helicobacter pylori-related chronic gastritis on gastrointestinal microorganisms and brain neurotransmitters in mice. Front Pharmacol 2024; 15:1472437. [PMID: 39712493 PMCID: PMC11659015 DOI: 10.3389/fphar.2024.1472437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2024] [Accepted: 11/14/2024] [Indexed: 12/24/2024] Open
Abstract
The effects of Helicobacter pylori (Hp)-related chronic gastritis on gastrointestinal microorganisms or brain neurotransmitters are not fully understood. Here, this study selected SPF C57BL/6 mice to set up a Hp-related chronic gastritis experiment group and a blank control group, and used omics to explore the specific effects of Hp-related chronic gastritis on gastrointestinal microorganisms and brain neurotransmitters in mice. The Tyramine (TyrA) content in the female experiment group's brain was considerably reduced compared to the female control group (p < 0.01), and TyrA was strongly correlated with 13 gastrointestinal microorganisms with significant differences, such as Acinetobacter_baumannii (p < 0.05). The His content in the male experiment group's brain was significantly higher than that in the male control group (p < 0.05), and His was strongly correlated with four gastrointestinal microorganisms with significant differences, such as Acinetobacter_baumannii (p < 0.05). The Levodopa (DOPA) content in the female control group's brain was significantly lower than that in the male control group (p < 0.05), and DOPA was strongly correlated with 19 gastrointestinal microorganisms with significant differences, such as Achromobacter_xylosoxidans (p < 0.05). The contents of L-Glutamine (Gln), L-Glutamine (GABA), Noradrenaline hydrochloride (NE), and Adrenaline hydrochloride (E) in the female experiment group's brain were significantly lower than those in the male experiment group (p < 0.05), and Gln, GABA, NE, and E were strongly correlated with 41, 28, 40, and 33 gastrointestinal microorganisms with significant differences (p < 0.05), respectively. These results indicate that Hp-related chronic gastritis could affect gastrointestinal microorganisms and brain neurotransmitters in mice with certain gender differences, and the changes in brain neurotransmitters might be related to the changes in gastrointestinal microorganisms.
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Affiliation(s)
- Hai-Hua Liu
- First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, China
| | - Tang-Tang Lin
- First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, China
| | - Qi-Jia Zhang
- Institute of Gastroenterology, Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Ling Zhang
- The Second Affiliated Hospital of Zunyi Medical University, Zunyi Medical University, Zunyi, China
| | - Jin-Ying Fang
- First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, China
| | - Ling Hu
- Institute of Gastroenterology, Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China
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Xia R, Jiang Z, Zhou Y, Pan L, Wang Y, Ma Y, Fan L, Yuan L, Cheng X. Oral microbiota and gastric cancer: recent highlights and knowledge gaps. J Oral Microbiol 2024; 16:2391640. [PMID: 39161727 PMCID: PMC11332296 DOI: 10.1080/20002297.2024.2391640] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 07/19/2024] [Accepted: 08/08/2024] [Indexed: 08/21/2024] Open
Abstract
Gastric cancer is one of the most common malignant tumors worldwide and has a high mortality rate. However, tests for the early screening and diagnosis of gastric cancer are limited and invasive. Certain oral microorganisms are over-expressed in gastric cancer, but there is heterogeneity among different studies. Notably, each oral ecological niche harbors specific microorganisms. Among them, tongue coating, saliva, and dental plaque are important and unique ecological niches in the oral cavity. The colonization environment in different oral niches may be a source of heterogeneity. In this paper, we systematically discuss the latest developments in the field of the oral microbiota and gastric cancer and elucidate the enrichment of microorganisms in the oral ecological niches of the tongue coatings, saliva, and dental plaque in gastric cancer patients. The various potential mechanisms by which the oral microbiota induces gastric cancer (activation of an excessive inflammatory response; promotion of proliferation, migration, invasion, and metastasis; and secretion of carcinogens, leading to imbalance in gastric microbial communities) are explored. In this paper, we also highlight the applications of the rapeutics targeting the oral microbiota in gastric cancer and suggests future research directions related to the relationship between the oral microbiota and gastric cancer.
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Affiliation(s)
- Ruihong Xia
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Zhengchen Jiang
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
- Zhejiang Key Lab of Prevention, Diagnosis and Therapy of Upper Gastrointestinal Cancer, Zhejiang Cancer Hospital, Hangzhou, China
| | - Ying Zhou
- Department of Pharmacy, Zhejiang Cancer Hospital, Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, China
| | - Libin Pan
- Department of Pharmacy, Zhejiang Cancer Hospital, Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, China
| | - Yanan Wang
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Yubo Ma
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Lili Fan
- Zhejiang Provincial Research Center for Upper Gastrointestinal Tract Cancer, Zhejiang Cancer Hospital, Hangzhou, China
| | - Li Yuan
- Zhejiang Key Lab of Prevention, Diagnosis and Therapy of Upper Gastrointestinal Cancer, Zhejiang Cancer Hospital, Hangzhou, China
- Zhejiang Provincial Research Center for Upper Gastrointestinal Tract Cancer, Zhejiang Cancer Hospital, Hangzhou, China
- Department of Integrated Chinese and Western Medicine, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | - Xiangdong Cheng
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
- Zhejiang Key Lab of Prevention, Diagnosis and Therapy of Upper Gastrointestinal Cancer, Zhejiang Cancer Hospital, Hangzhou, China
- Zhejiang Provincial Research Center for Upper Gastrointestinal Tract Cancer, Zhejiang Cancer Hospital, Hangzhou, China
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Zhang H, Lin Y, Li S, Bi J, Zeng J, Mo C, Xu S, Jia B, Lu Y, Liu C, Liu Z. Effects of bacterial extracellular vesicles derived from oral and gastrointestinal pathogens on systemic diseases. Microbiol Res 2024; 285:127788. [PMID: 38833831 DOI: 10.1016/j.micres.2024.127788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/18/2024] [Accepted: 05/26/2024] [Indexed: 06/06/2024]
Abstract
Oral microbiota and gastrointestinal microbiota, the two largest microbiomes in the human body, are closely correlated and frequently interact through the oral-gut axis. Recent research has focused on the roles of these microbiomes in human health and diseases. Under normal conditions, probiotics and commensal bacteria can positively impact health. However, altered physiological states may induce dysbiosis, increasing the risk of pathogen colonization. Studies suggest that oral and gastrointestinal pathogens contribute not only to localized diseases at their respective colonized sites but also to the progression of systemic diseases. However, the mechanisms by which bacteria at these local sites are involved in systemic diseases remain elusive. In response to this gap, the focus has shifted to bacterial extracellular vesicles (BEVs), which act as mediators of communication between the microbiota and the host. Numerous studies have reported the targeted delivery of bacterial pathogenic substances from the oral cavity and the gastrointestinal tract to distant organs via BEVs. These pathogenic components subsequently elicit specific cellular responses in target organs, thereby mediating the progression of systemic diseases. This review aims to elucidate the extensive microbial communication via the oral-gut axis, summarize the types and biogenesis mechanisms of BEVs, and highlight the translocation pathways of oral and gastrointestinal BEVs in vivo, as well as the impacts of pathogens-derived BEVs on systemic diseases.
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Affiliation(s)
- Han Zhang
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Yunhe Lin
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Siwei Li
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Jiaming Bi
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Jiawei Zeng
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Chuzi Mo
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Shuaimei Xu
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Bo Jia
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Yu Lu
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Chengxia Liu
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Zhongjun Liu
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510515, China.
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Farhad SZ, Karbalaeihasanesfahani A, Dadgar E, Nasiri K, Esfahaniani M, Nabi Afjadi M. The role of periodontitis in cancer development, with a focus on oral cancers. Mol Biol Rep 2024; 51:814. [PMID: 39008163 DOI: 10.1007/s11033-024-09737-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 06/18/2024] [Indexed: 07/16/2024]
Abstract
Periodontitis is a severe gum infection that begins as gingivitis and can lead to gum recession, bone loss, and tooth loss if left untreated. It is primarily caused by bacterial infection, which triggers inflammation and the formation of periodontal pockets. Notably, periodontitis is associated with systemic health issues and has been linked to heart disease, diabetes, respiratory diseases, adverse pregnancy outcomes, and cancers. Accordingly, the presence of chronic inflammation and immune system dysregulation in individuals with periodontitis significantly contributes to the initiation and progression of various cancers, particularly oral cancers. These processes promote genetic mutations, impair DNA repair mechanisms, and create a tumor-supportive environment. Moreover, the bacteria associated with periodontitis produce harmful byproducts and toxins that directly damage the DNA within oral cells, exacerbating cancer development. In addition, chronic inflammation not only stimulates cell proliferation but also inhibits apoptosis, causes DNA damage, and triggers the release of pro-inflammatory cytokines. Collectively, these factors play a crucial role in the progression of cancer in individuals affected by periodontitis. Further, specific viral and bacterial agents, such as hepatitis B and C viruses, human papillomavirus (HPV), Helicobacter pylori (H. pylori), and Porphyromonas gingivalis, contribute to cancer development through distinct mechanisms. Bacterial infections have systemic implications for cancer development, while viral infections provoke immune and inflammatory responses that can lead to genetic mutations. This review will elucidate the link between periodontitis and cancers, particularly oral cancers, exploring their underlying mechanisms to provide insights for future research and treatment advancements.
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Affiliation(s)
- Shirin Zahra Farhad
- Department of Periodontics, Faculty of Dentistry, Isfahan(Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| | | | - Esmaeel Dadgar
- Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Kamyar Nasiri
- Faculty of Dentistry, Islamic Azad University of Medical Sciences, Tehran, Iran
| | - Mahla Esfahaniani
- Faculty of Dentistry, Golestan University of Medical Sciences, Gorgan, Iran.
| | - Mohsen Nabi Afjadi
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran.
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12
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Okawa J, Hori K, Izuno H, Fukuda M, Ujihashi T, Kodama S, Yoshimoto T, Sato R, Ono T. Developing tongue coating status assessment using image recognition with deep learning. J Prosthodont Res 2024; 68:425-431. [PMID: 37766551 DOI: 10.2186/jpr.jpr_d_23_00117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
PURPOSE To build an image recognition network to evaluate tongue coating status. METHODS Two image recognition networks were built: one for tongue detection and another for tongue coating classification. Digital tongue photographs were used to develop both networks; images from 251 (178 women, 74.7±6.6 years) and 144 older adults (83 women, 73.8±7.3 years) who volunteered to participate were used for the tongue detection network and coating classification network, respectively. The learning objective of the tongue detection network is to extract a rectangular region that includes the tongue. You-Only-Look-Once (YOLO) v2 was used as the detection network, and transfer learning was performed using ResNet-50. The accuracy was evaluated by calculating the intersection over the union. For tongue coating classification, the rectangular area including the tongue was divided into a grid of 7×7. Five experienced panelists scored the tongue coating in each area using one of five grades, and the tongue coating index (TCI) was calculated. Transfer learning for tongue coating grades was performed using ResNet-18, and the TCI was calculated. Agreement between the panelists and network for the tongue coating grades in each area and TCI was evaluated using the kappa coefficient and intraclass correlation, respectively. RESULTS The tongue detection network recognized the tongue with a high intersection over union (0.885±0.081). The tongue coating classification network showed high agreement with tongue coating grades and TCI, with a kappa coefficient of 0.826 and an intraclass correlation coefficient of 0.807, respectively. CONCLUSIONS Image recognition enables simple and detailed assessment of tongue coating status.
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Affiliation(s)
- Jumpei Okawa
- Division of Comprehensive Prosthodontics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Kazuhiro Hori
- Division of Comprehensive Prosthodontics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Hiromi Izuno
- Department of Oral Health Sciences, Faculty of Nursing and Health Care, BAIKA Women's University, Ibaraki, Japan
| | - Masayo Fukuda
- Department of Oral Health Science, Faculty of Health Science, Kobe Tokiwa University, Kobe, Japan
| | - Takako Ujihashi
- Division of Comprehensive Prosthodontics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
- Department of Oral Health Science, Faculty of Health Science, Kobe Tokiwa University, Kobe, Japan
| | - Shohei Kodama
- Division of Comprehensive Prosthodontics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Tasuku Yoshimoto
- Division of Comprehensive Prosthodontics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Rikako Sato
- Division of Comprehensive Prosthodontics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Takahiro Ono
- Division of Comprehensive Prosthodontics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
- Department of Geriatric Dentistry, Osaka Dental University, Osaka, Japan
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13
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Mager LF, Krause T, McCoy KD. Interaction of microbiota, mucosal malignancies, and immunotherapy-Mechanistic insights. Mucosal Immunol 2024; 17:402-415. [PMID: 38521413 DOI: 10.1016/j.mucimm.2024.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 03/09/2024] [Accepted: 03/17/2024] [Indexed: 03/25/2024]
Abstract
The microbiome has emerged as a crucial modulator of host-immune interactions and clearly impacts tumor development and therapy efficacy. The microbiome is a double-edged sword in cancer development and therapy as both pro-tumorigenic and anti-tumorigenic bacterial taxa have been identified. The staggering number of association-based studies in various tumor types has led to an enormous amount of data that makes it difficult to identify bacteria that promote tumor development or modulate therapy efficacy from bystander bacteria. Here we aim to comprehensively summarize the current knowledge of microbiome-host immunity interactions and cancer therapy in various mucosal tissues to find commonalities and thus identify potential functionally relevant bacterial taxa. Moreover, we also review recent studies identifying specific bacteria and mechanisms through which the microbiome modulates cancer development and therapy efficacy.
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Affiliation(s)
- Lukas F Mager
- Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Canada; Department of Internal Medicine I, Faculty of Medicine, University of Tübingen, Germany; M3 Research Center for Malignom, Metabolome and Microbiome, Faculty of Medicine University Tübingen, Germany
| | - Tim Krause
- Department of Internal Medicine I, Faculty of Medicine, University of Tübingen, Germany; M3 Research Center for Malignom, Metabolome and Microbiome, Faculty of Medicine University Tübingen, Germany
| | - Kathy D McCoy
- Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Canada.
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14
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Ogaya Y, Kadota T, Hamada M, Nomura R, Nakano K. Characterization of the unique oral microbiome of children harboring Helicobacter pylori in the oral cavity. J Oral Microbiol 2024; 16:2339158. [PMID: 38617439 PMCID: PMC11011227 DOI: 10.1080/20002297.2024.2339158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 04/01/2024] [Indexed: 04/16/2024] Open
Abstract
Objective Helicobacter pylori infection is acquired in childhood via the oral cavity, although its relationship with the characteristics of the oral microbiome has not been elucidated. In this study, we performed comprehensive analysis of the oral microbiome in children and adults with or without H. pylori in the oral cavity. Methods Bacterial DNA was extracted from 41 adult and 21 child saliva specimens, and H. pylori was detected using PCR. 16S rRNA gene amplification was performed for next-generation sequencing. Bioinformatic analyses were conducted using Quantitative Insights into Microbial Ecology 2 (QIIME 2). Results Faith's phylogenetic diversity analysis showed a significant difference between H. pylori-negative adult and child specimens in terms of α-diversity (p < 0.05), while no significant difference was observed between H. pylori-positive adult and child specimens. There was also a significant difference in β-diversity between H. pylori-positive and negative child specimens (p < 0.05). Taxonomic analysis at the genus level revealed that Porphyromonas was the only bacterium that was significantly more abundant in both H. pylori-positive adults and children than in corresponding negative specimens (p < 0.01 and p < 0.05, respectively). Conclusion These results suggest unique oral microbiome characteristics in children with H. pylori infection in the oral cavity.
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Affiliation(s)
- Yuko Ogaya
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Tamami Kadota
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Masakazu Hamada
- Department of Oral & Maxillofacial Oncology and Surgery, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Ryota Nomura
- Department of Pediatric Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kazuhiko Nakano
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Osaka, Japan
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15
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Yang T, Li J, Zhang Y, Deng Z, Cui G, Yuan J, Sun J, Wu X, Hua D, Xiang S, Chen Z. Intracellular presence of Helicobacter pylori antigen and genes within gastric and vaginal Candida. PLoS One 2024; 19:e0298442. [PMID: 38329956 PMCID: PMC10852334 DOI: 10.1371/journal.pone.0298442] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 01/23/2024] [Indexed: 02/10/2024] Open
Abstract
BACKGROUND Helicobacter pylori infections are generally acquired during childhood and affect half of the global population, but its transmission route remains unclear. It is reported that H. pylori can be internalized into Candida, but more evidence is needed for the internalization of H. pylori in human gastrointestinal Candida and vaginal Candida. METHODS Candida was isolated from vaginal discharge and gastric mucosa biopsies. We PCR-amplified and sequenced H. pylori-specific genes from Candida genomic DNA. Using optical and immunofluorescence microscopy, we identified and observed bacteria-like bodies (BLBs) in Candida isolates and subcultures. Intracellular H. pylori antigen were detected by immunofluorescence using Fluorescein isothiocyanate (FITC)-labeled anti-H. pylori IgG antibodies. Urease activity in H. pylori internalized by Candida was detected by inoculating with urea-based Sabouraud dextrose agar, which changed the agar color from yellow to pink, indicating urease activity. RESULTS A total of 59 vaginal Candida and two gastric Candida strains were isolated from vaginal discharge and gastric mucosa. Twenty-three isolates were positive for H. pylori 16S rDNA, 12 were positive for cagA and 21 were positive for ureA. The BLBs could be observed in Candida cells, which were positive for H. pylori 16S rDNA, and were viable determined by the LIVE/DEAD BacLight Bacterial Viability kit. Fluorescein isothiocyanate (FITC)-conjugated antibodies could be reacted specifically with H. pylori antigen inside Candida cells by immunofluorescence. Finally, H. pylori-positive Candida remained positive for H. pylori 16S rDNA even after ten subcultures. Urease activity of H. pylori internalized by Candida was positive. CONCLUSION In the form of BLBs, H. pylori can internalize into gastric Candida and even vaginal Candida, which might have great significance in its transmission and pathogenicity.
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Affiliation(s)
- Tingxiu Yang
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
- Department of Hospital Infection and Management, Guizhou Provincial People’s Hospital, Guiyang, China
- Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education/Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
- Scientific Research Center, School of Basic Medical Science, Guizhou Medical University Guiyang, Guiyang, China
| | - Jia Li
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
- Department of Clinical Laboratory, Jinyang Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Yuanyuan Zhang
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
- Department of Gastroenterology, People’s Hospital of Qiannan Prefecture, Guizhou, China
| | - Zhaohui Deng
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
| | - Guzhen Cui
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
- Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education/Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
| | - Jun Yuan
- Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education/Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
| | - Jianchao Sun
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
| | - Xiaojuan Wu
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
- Scientific Research Center, School of Basic Medical Science, Guizhou Medical University Guiyang, Guiyang, China
| | - Dengxiong Hua
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
| | - Song Xiang
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
| | - Zhenghong Chen
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
- Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education/Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
- Scientific Research Center, School of Basic Medical Science, Guizhou Medical University Guiyang, Guiyang, China
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Xu L, Liu X, Wu Q, Hua ZL, Yang F, Zhang JF. Phylogenetic analysis of pathogenic genes in Helicobacter species. Shijie Huaren Xiaohua Zazhi 2024; 32:58-70. [DOI: 10.11569/wcjd.v32.i1.58] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/01/2023] [Accepted: 01/11/2024] [Indexed: 01/26/2024] Open
Abstract
BACKGROUND Helicobacter bacteria are associated with gastrointestinal diseases, especially Helicobacter pylori (H. pylori). With the isolation of many non-Helicobacter pylori Helicobacters (NHPH) from the liver, intestines, and gallbladder of natural animal reservoirs, NHPH have been potential zoonotic pathogens, but their infection and pathogenic mechanisms are still unclear.
AIM To explore the phylogenetic relationship of Helicobacter species based on their pathogenic genes.
METHODS The present study collected the genomic sequences of 50 strains in genus Helicobacter, including 12 strains of H. pylori and 38 strains of NHPH. Based on 16S rRNA gene and several pathogenic genes (flagella, urease, and virulence factors), MAGA software (Version 11.0) was used to align their sequences and construct phylogenetic trees.
RESULTS The phylogenetic tree of 16S rRNA gene showed that gastric Helicobacter (GH) and enterohepatic Helicobacter species (EHS) were clustered into two large branches, respectively. All of the GH's hosts were mammals, while the hosts of EHS were many wild poultry and mammals. Based on the flagella motility-related genes (flaA, flaB, fliP, fliQ, fliR, fliG, fliM, and fliN), the phylogenetic trees were divided into two major branches (GH and EHS). Similarly, the phylogenetic trees of lipopolysaccharide (LPS) biosynthesis-related genes (lptA, waaC, and waaF) presented two major branches (GH and EHS), too. The urease genes existed in all of the 12 strains of H. pylori, 13 strains of gastric NHPH, and 4 strains of EHS (H. hepaticus, H. muridarum, H. bilis, and H. anseris). However, no significant phylogenetic patterns of GH and EHS were observed in the seven urease genes (ureA, ureB, ureE, ureF, ureG, ureH, and ureI).
CONCLUSION The phylogenetic relationship of Helicobacter species' pathogenic genes is dominated distinctly by the special colonization areas including gastric and enterohepatic niches.
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Affiliation(s)
- Le Xu
- School of Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province, China
| | - Xing Liu
- School of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu Province, China
| | - Qi Wu
- Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Zhao-Lai Hua
- Institute of Tumor Prevention and Control, People's Hospital of Yangzhong City, Zhenjiang 212299, Jiangsu Province, China
| | - Fei Yang
- School of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu Province, China
| | - Jun-Feng Zhang
- School of Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu Province, China
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Wang Y, Li J, Hu H, Wu Y, Chen S, Feng X, Wang T, Wang Y, Wu S, Luo H. Distinct microbiome of tongue coating and gut in type 2 diabetes with yellow tongue coating. Heliyon 2024; 10:e22615. [PMID: 38163136 PMCID: PMC10756968 DOI: 10.1016/j.heliyon.2023.e22615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/08/2023] [Accepted: 11/15/2023] [Indexed: 01/03/2024] Open
Abstract
The gut microbiome plays a critical role in the pathogenesis of type 2 diabetes mellitus (T2DM). However, the inconvenience of obtaining fecal samples hinders the clinical application of gut microbiome analysis. In this study, we hypothesized that tongue coating color is associated with the severity of T2DM. Therefore, we aimed to compare tongue coating, gut microbiomes, and various clinical parameters between patients with T2DM with yellow (YC) and non-yellow tongue coatings (NYC). Tongue coating and gut microbiomes of 27 patients with T2DM (13 with YC and 14 with NYC) were analyzed using 16S rDNA gene sequencing technology. Additionally, we measured glycated hemoglobin (HbA1c), random blood glucose (RBG), fasting blood glucose (FBG), postprandial blood glucose (PBG), insulin (INS), glucagon (GC), body mass index (BMI), and homeostasis model assessment of β-cell function (HOMA-β) levels for each patient. The correlation between tongue coating and the gut microbiomes was also analyzed. Our findings provide evidence that the levels of Lactobacillus spp. are significantly higher in both the tongue coating and the gut microbiomes of patients with YC. Additionally, we observed that elevated INS and GC levels, along with decreased BMI and HOMA-β levels, were indicative of a more severe condition in patients with T2DM with YC. Moreover, our results suggest that the composition of the tongue coating may reflect the presence of Lactobacillus spp. in the gut. These results provide insights regarding the potential relationship between tongue coating color, the gut microbiome, and T2DM.
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Affiliation(s)
- Yao Wang
- School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Jiqing Li
- Department of Endocrinology, Hainan Provincial Hospital of Traditional Chinese Medicine , Haikou, Hainan Province, China
| | - Haiying Hu
- West China Hospital Sichuan University, Chengdu, Sichuan Province, China
| | - Yalan Wu
- School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Song Chen
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Xiangrong Feng
- School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Ting Wang
- Department of Emergency and Critical Care, Hainan Provincial Hospital of Traditional Chinese Medicine, Haikou, Hainan Province, China
| | - Yinrong Wang
- Department of Endocrinology, Hainan Provincial Hospital of Traditional Chinese Medicine , Haikou, Hainan Province, China
| | - Su Wu
- Department of Endocrinology, Hainan Provincial Hospital of Traditional Chinese Medicine , Haikou, Hainan Province, China
| | - Huanhuan Luo
- School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
- State Key Laboratory of Traditional Chinese Medicine Syndrome, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
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18
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Otálora-Otálora BA, López-Rivera JJ, Aristizábal-Guzmán C, Isaza-Ruget MA, Álvarez-Moreno CA. Host Transcriptional Regulatory Genes and Microbiome Networks Crosstalk through Immune Receptors Establishing Normal and Tumor Multiomics Metafirm of the Oral-Gut-Lung Axis. Int J Mol Sci 2023; 24:16638. [PMID: 38068961 PMCID: PMC10706695 DOI: 10.3390/ijms242316638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/13/2023] [Accepted: 11/18/2023] [Indexed: 12/18/2023] Open
Abstract
The microbiome has shown a correlation with the diet and lifestyle of each population in health and disease, the ability to communicate at the cellular level with the host through innate and adaptative immune receptors, and therefore an important role in modulating inflammatory process related to the establishment and progression of cancer. The oral cavity is one of the most important interaction windows between the human body and the environment, allowing the entry of an important number of microorganisms and their passage across the gastrointestinal tract and lungs. In this review, the contribution of the microbiome network to the establishment of systemic diseases like cancer is analyzed through their synergistic interactions and bidirectional crosstalk in the oral-gut-lung axis as well as its communication with the host cells. Moreover, the impact of the characteristic microbiota of each population in the formation of the multiomics molecular metafirm of the oral-gut-lung axis is also analyzed through state-of-the-art sequencing techniques, which allow a global study of the molecular processes involved of the flow of the microbiota environmental signals through cancer-related cells and its relationship with the establishment of the transcription factor network responsible for the control of regulatory processes involved with tumorigenesis.
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Affiliation(s)
| | - Juan Javier López-Rivera
- Grupo de Investigación INPAC, Specialized Laboratory, Clinica Universitaria Colombia, Clínica Colsanitas S.A., Bogotá 111321, Colombia;
| | - Claudia Aristizábal-Guzmán
- Grupo de Investigación INPAC, Unidad de Investigación, Fundación Universitaria Sanitas, Bogotá 110131, Colombia;
| | - Mario Arturo Isaza-Ruget
- Keralty, Sanitas International Organization, Grupo de Investigación INPAC, Fundación Universitaria Sanitas, Bogotá 110131, Colombia;
| | - Carlos Arturo Álvarez-Moreno
- Infectious Diseases Department, Clinica Universitaria Colombia, Clínica Colsanitas S.A., Bogotá 111321, Colombia;
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19
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Wang L, Zhang Z. Diabetes Mellitus and Gastric Cancer: Correlation and Potential Mechanisms. J Diabetes Res 2023; 2023:4388437. [PMID: 38020199 PMCID: PMC10653978 DOI: 10.1155/2023/4388437] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 10/22/2023] [Accepted: 10/27/2023] [Indexed: 12/01/2023] Open
Abstract
This review summarizes the correlation between diabetes mellitus (DM) and gastric cancer (GC) from the perspectives of epidemiology, drug use, and potential mechanisms. The association between DM and GC is inconclusive, and the positive direction of the association reported in most published meta-analyses suggests that DM may be an independent risk factor for GC. Many clinical investigations have shown that people with DM and GC who undergo gastrectomy may have better glycemic control. The potential link between DM and GC may involve the interaction of multiple common risk factors, such as obesity, hyperglycemia and hyperinsulinemia, H. pylori infection, and the use of metformin. Although in vitro and in vivo data support that H. pylori infection status and metformin can influence GC risk in DM patients, there are conflicting results. Patient survival outcomes are influenced by multiple factors, so further research is needed to identify the patients who may benefit.
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Affiliation(s)
- Li Wang
- Department of Emergency, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310052, China
- Zhejiang Provincial Critical Research Center for Emergency Medicine Clinic, Hangzhou 310052, China
- Key Laboratory of Diagnosis and Treatment of Severe Trauma and Burn of Zhejiang Province, Hangzhou 310052, China
| | - Zhe Zhang
- Department of Emergency Medicine, The First People's Hospital of Linping District, 311100, Hangzhou, Zhejiang, China
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20
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Peng R, Zhang Z, Qu Y, Chen W. The impact of Helicobacter pylori eradication with vonoprazan-amoxicillin dual therapy combined with probiotics on oral microbiota: a randomized double-blind placebo-controlled trial. Front Microbiol 2023; 14:1273709. [PMID: 37849923 PMCID: PMC10577438 DOI: 10.3389/fmicb.2023.1273709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 09/11/2023] [Indexed: 10/19/2023] Open
Abstract
Background Helicobacter pylori infection and eradication have been reported to cause dysbiosis of the oral microbiota. Probiotics are increasingly being used to maintain the balance of the oral microbiota. We aimed to investigate the effects of H. pylori infection, H. pylori eradication with vonoprazan-amoxicillin dual therapy, and probiotics supplementation on the oral microbiota. Methods H. pylori positive patients were randomly assigned to a vonoprazan-amoxicillin regimen plus probiotics (BtT group) or the placebo (PT group) for 14 days. H. pylori negative population served as normal controls. Tongue coating samples were collected from 60 H. pylori positive patients at three time points (before H. pylori eradication, after H. pylori eradication, and at confirmation of H. pylori infection cure) and 20 H. pylori negative subjects. 16S rRNA gene sequencing was used to analyze the oral microbiota. Results H. pylori was detected in the oral cavity in positive (34/60), negative (7/20), and eradicated (1/60) subjects using high-throughput sequencing. Compared with normal controls, H. pylori positive patients exhibited higher richness (p = 0.012) and comparable diversity (p = 0.075) of oral microbiota. Beta diversity and KEGG analysis showed oral flora composition and function differences in H. pylori positive and negative subjects. Alpha diversity dramatically decreased after H. pylori eradication and modestly increased with confirmation of H. pylori eradication. Beta diversity and LEfSe analysis revealed distinct structures, and KEGG analysis showed distinct signaling pathways of tongue coating flora at three time points. There was a significant reduction of Firmicutes and Lactobacillus after H. pylori erdication. The PT group and BtT group had identical compositional and functional differences of oral microbiota at three time points. Conclusion No substantial link existed between oral and stomach H. pylori, while removing gastric H. pylori helped eliminate oral H. pylori. H. pylori infection and vonoprazan-amoxicillin dual therapy affected oral microbiota diversity, structure, and function. H. pylori eradication demonstrated a suppressive impact on the proliferation of oral pathogens, specifically Firmicutes and Lactobacillus. Nevertheless, probiotics supplementation did not reduce the oral microbial disturbance caused by H. pylori eradication. Clinical trial registration https://www.chictr.org.cn/, identifiers CHICTR2200060023.
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Affiliation(s)
| | - Zhenyu Zhang
- Department of Gastroenterology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
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21
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Zang H, Wang J, Wang H, Guo J, Li Y, Zhao Y, Song J, Liu F, Liu X, Zhao Y. Metabolic alterations in patients with Helicobacter pylori-related gastritis: The H. pylori-gut microbiota-metabolism axis in progression of the chronic inflammation in the gastric mucosa. Helicobacter 2023:e12984. [PMID: 37186092 DOI: 10.1111/hel.12984] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 02/15/2023] [Accepted: 03/13/2023] [Indexed: 05/17/2023]
Abstract
PURPOSE To characterize the serum metabolism in patients with Helicobacter pylori-positive and H. pylori-negative gastritis. METHODS Clinical data and serum gastric function parameters, PGI (pepsinogen I), PGII, PGR (PGI/II), and G-17 (gastrin-17) of 117 patients with chronic gastritis were collected, including 57 H. pylori positive and 60 H. pylori negative subjects. Twenty cases in each group were randomly selected to collect intestinal mucosa specimens and serum samples. The gut microbiota profiles were generated by 16S rRNA gene sequencing, and the serum metabolites were analyzed by a targeted metabolomics approach based on liquid chromatography-mass spectrometry (LC-MS) technology. RESULTS Altered expression of 20 metabolites, including isovaleric acid, was detected in patients with HPAG. Some taxa of Bacteroides, Fusobacterium, and Prevotella in the gut microbiota showed significant correlations with differentially expressed metabolites between H. pylori positive and H. pylori negative individuals. As a result, an H. pylori-gut microbiota-metabolism (HGM) axis was proposed. CONCLUSION Helicobacter pylori infection may influence the progression of mucosal diseases and the emergence of other complications in the host by altering the gut microbiota, and thus affecting the host serum metabolism.
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Affiliation(s)
- Hongmin Zang
- Hebei University of Chinese Medicine, Shijiazhuang, China
- The Traditional Chinese Medicine Hospital of Shijiazhuang, Shijiazhuang, China
| | - Jin Wang
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Huijie Wang
- The Traditional Chinese Medicine Hospital of Shijiazhuang, Shijiazhuang, China
| | - Jiaxuan Guo
- The Traditional Chinese Medicine Hospital of Shijiazhuang, Shijiazhuang, China
| | - Yuchan Li
- The Traditional Chinese Medicine Hospital of Shijiazhuang, Shijiazhuang, China
| | - Yinuo Zhao
- School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Jinzhong Song
- Hebei University of Chinese Medicine, Shijiazhuang, China
- The Traditional Chinese Medicine Hospital of Shijiazhuang, Shijiazhuang, China
| | - Fengshuang Liu
- Hebei University of Chinese Medicine, Shijiazhuang, China
- Hebei Academy of Traditional Chinese Medicine, Shijiazhuang, China
| | - Xuzhao Liu
- North China University of Science and Technology, Tangshan, China
| | - Yubin Zhao
- Hebei University of Chinese Medicine, Shijiazhuang, China
- North China University of Science and Technology, Tangshan, China
- Shijiazhuang People's Hospital, Shijiazhuang, China
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22
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Chen R, Li Y, Chen X, Chen J, Song J, Yang X, Ye L, Wu Z, Xie P, Zhong Q, Yang R, Wu J. dupA+H. pylori reduces diversity of gastric microbiome and increases risk of erosive gastritis. Front Cell Infect Microbiol 2023; 13:1103909. [PMID: 37009501 PMCID: PMC10063918 DOI: 10.3389/fcimb.2023.1103909] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 03/06/2023] [Indexed: 03/19/2023] Open
Abstract
Helicobacter pylori is believed to induce gastropathy; however, the exact pathogenic molecules involved in this process have not been elucidated. Duodenal ulcer promoting gene A (DupA) is a virulence factor with a controversial role in gastric inflammation and carcinogenesis. To explore and confirm the function of DupA in gastropathy from the perspective of the microbiome, we investigated the microbial characteristics of 48 gastritis patients through 16S rRNA amplicon sequencing. In addition, we isolated 21 H. pylori strains from these patients and confirmed the expression of dupA using PCR and qRT-PCR. Bioinformatics analysis identified diversity loss and compositional changes as the key features of precancerous lesions in the stomach, and H. pylori was a characteristic microbe present in the stomach of the gastritis patients. Co-occurrence analysis revealed that H. pylori infection inhibits growth of other gastric inhabiting microbes, which weakened the degradation of xenobiotics. Further analysis showed that dupA+ H. pylori were absent in precancerous lesions and were more likely to appear in erosive gastritis, whereas dupA− H. pylori was highly abundant in precancerous lesions. The presence of dupA in H. pylori caused less disturbance to the gastric microbiome, maintaining the relatively richness of gastric microbiome. Overall, our findings suggest that high dupA expression in H. pylori is correlated with a high risk of erosive gastritis and a lower level of disturbance to the gastric microbiome, indicating that DupA should be considered a risk factor of erosive gastritis rather than gastric cancer.
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Affiliation(s)
- Ruiyan Chen
- Digestive Endoscopy Center, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Ying Li
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Xiaodong Chen
- Digestive Endoscopy Center, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Jianhui Chen
- Division of Gastrointestinal Surgery Center, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Jie Song
- Digestive Endoscopy Center, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Xiaoqiao Yang
- Digestive Endoscopy Center, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Lifang Ye
- Digestive Endoscopy Center, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Zizhong Wu
- Digestive Endoscopy Center, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Peng Xie
- Digestive Endoscopy Center, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Qiong Zhong
- Department of Gastroenterology, Longnan Hospital of Traditional Chinese Medicine, Longnan, China
| | - Runshi Yang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Jiachuan Wu
- Digestive Endoscopy Center, Guangdong Second Provincial General Hospital, Guangzhou, China
- *Correspondence: Jiachuan Wu,
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23
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Cao X, Yang Y, Zhang Y, Ji R, Zhao X, Zheng W, Yang A. Impact of Helicobacter pylori on the gastric microbiome in patients with chronic gastritis: a systematic review and meta-analysis protocol. BMJ Open 2023; 13:e050476. [PMID: 36927582 PMCID: PMC10030478 DOI: 10.1136/bmjopen-2021-050476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/17/2023] Open
Abstract
INTRODUCTION Chronic gastritis is a common disease worldwide. Studies have consistently shown that chronic gastritis is usually associated with gastric microbial dysbiosis, especially the infection of Helicobacter pylori. However, the interaction between H. pylori and non-H. pylori bacteria in patients with chronic gastritis has not been clearly identified yet. Consequently, we designed a protocol for a systematic review and meta-analysis, which focused on identifying the changes in gastrointestinal microbiota composition between patients with H. pylori-infective and non-infective chronic gastritis. METHOD AND ANALYSIS We will search PubMed, EMBASE and Cochrane Library databases to retrieve observational studies on humans. The eligible studies must include data about the relative abundance of the gastrointestinal microbiome in patients with H. pylori-infective or non-infective chronic gastritis. Only the data of adults aged over 18 years will be analysed. Two researchers will extract the data independently, and Newcastle-Ottawa Scale will be used to assess the risk of bias. Random-effects model will be performed in quantitative analyses. Correlation analysis, bioinformatics analysis and function analysis will be performed. DISCUSSION Currently, numerous studies have revealed the role of H. pylori in chronic gastritis. However, the alterations of non-H. pylori bacteria in patients with chronic gastritis remain an open question. The results of our study might provide new insights into future diagnosis and treatments. ETHICS AND DISSEMINATION This study is based on published documents, unrelated to personal data, so ethical approval is not in need. The results of this study are expected to be published in journals or conference proceedings. PROSPERO REGISTRATION NUMBER CRD42020205260; Pre-results.
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Affiliation(s)
- Xinyuan Cao
- Department of Gastroenterology, Peking Union Medical College Hospital (PUMCH), Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Beijing, China
| | - Yingyun Yang
- Department of Gastroenterology, Peking Union Medical College Hospital (PUMCH), Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Beijing, China
| | - Yizhen Zhang
- Department of Gastroenterology, Peking Union Medical College Hospital (PUMCH), Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Beijing, China
| | - Ruoyu Ji
- Department of Gastroenterology, Peking Union Medical College Hospital (PUMCH), Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Beijing, China
| | - Xinyu Zhao
- Department of Clinical Epidemiology and EBM, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Weiyang Zheng
- Department of Gastroenterology, Peking Union Medical College Hospital (PUMCH), Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Beijing, China
| | - Aiming Yang
- Department of Gastroenterology, Peking Union Medical College Hospital (PUMCH), Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Beijing, China
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24
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Wang Z, Shao SL, Xu XH, Zhao X, Wang MY, Chen A, Cong HY. Helicobacter pylori and gastric microbiota homeostasis: progress and prospects. Future Microbiol 2023; 18:137-157. [PMID: 36688318 DOI: 10.2217/fmb-2022-0102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Helicobacter pylori, a Gram-negative microaerobic bacteria belonging to the phylum Proteobacteria, can colonize in the stomach and duodenum, and cause a series of gastrointestinal diseases such as gastritis, gastric ulcer and even gastric cancer. At present, the high diversity of the microorganisms in the stomach has been confirmed with culture-independent methods; some researchers have also studied the stomach microbiota composition at different stages of H. pylori carcinogenesis. Here, we mainly review the possible role of H. pylori-mediated microbiota changes in the occurrence and development of gastric cancer to provide new ideas for preventing H. pylori infection and regulating microecological imbalance.
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Affiliation(s)
- Zan Wang
- School of Medical Laboratory, Weifang Medical University, Weifang, Shandong, 261053, People's Republic of China
| | - Shu-Li Shao
- Department of Central Lab, Weihai Municipal Hospital. Weihai, Shandong, 264200, People's Republic of China
| | - Xiao-Han Xu
- School of Medical Laboratory, Weifang Medical University, Weifang, Shandong, 261053, People's Republic of China
| | - Xue Zhao
- School of Medical Laboratory, Weifang Medical University, Weifang, Shandong, 261053, People's Republic of China
| | - Ming-Yi Wang
- Department of Central Lab, Weihai Municipal Hospital. Weihai, Shandong, 264200, People's Republic of China
| | - Ai Chen
- School of Medical Laboratory, Weifang Medical University, Weifang, Shandong, 261053, People's Republic of China.,Department of Central Lab, Weihai Municipal Hospital. Weihai, Shandong, 264200, People's Republic of China
| | - Hai-Yan Cong
- School of Medical Laboratory, Weifang Medical University, Weifang, Shandong, 261053, People's Republic of China.,Department of Central Lab, Weihai Municipal Hospital. Weihai, Shandong, 264200, People's Republic of China
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25
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Dewayani A, Afrida Fauzia K, Alfaray RI, Waskito LA, Doohan D, Rejeki PS, Alshawsh MA, Rezkitha YAA, Yamaoka Y, Miftahussurur M. Gastric microbiome changes in relation with Helicobacter pylori resistance. PLoS One 2023; 18:e0284958. [PMID: 37200323 DOI: 10.1371/journal.pone.0284958] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 04/12/2023] [Indexed: 05/20/2023] Open
Abstract
INTRODUCTION Inadequate antimicrobial treatment has led to multidrug-resistant (MDR) bacteria, including Helicobacter pylori (H. pylori), which one of the notable pathogens in the stomach. Antibiotic-induced changes in the microbiota can negatively affect the host. This study aimed to determine the influence of H. pylori resistance on the diversity and abundance of the stomach microbiome. METHODS Bacterial DNA was extracted from biopsy samples of patients presenting dyspepsia symptoms with H. pylori positive from cultures and histology. DNA was amplified from the V3-V4 regions of the 16S rRNA gene. In-vitro E-test was used to detect antibiotic resistance. Microbiome community analysis was conducted through α-diversity, β-diversity, and relative abundance. RESULTS Sixty-nine H. pylori positive samples were eligible after quality filtering. Following resistance status to five antibiotics, samples were classified into 24 sensitive, 24 single resistance, 16 double resistance, 5 triple resistance. Samples were mostly resistant to metronidazole (73.33%; 33/45). Comparation of four groups displayed significantly elevated α-diversity parameters under the multidrug resistance condition (all P <0.05). A notable change was observed in triple-resistant compared to sensitive (P <0.05) and double-resistant (P <0.05) groups. Differences in β-diversity by UniFrac and Jaccard were not significant in terms of the resistance (P = 0.113 and P = 0.275, respectively). In the triple-resistant group, the relative abundance of Helicobacter genera was lower, whereas that of Streptococcus increased. Moreover, the linear discriminant analysis effect size (LEfSe) was associated with the presence of Corynebacterium and Saccharimonadales in the single-resistant group and Pseudomonas and Cloacibacterium in the triple-resistant group. CONCLUSION Our results suggest that the resistant samples showed a higher trend of diversity and evenness than the sensitive samples. The abundance of H. pylori in the triple-resistant samples decreased with increasing cohabitation of pathogenic bacteria, which may support antimicrobial resistance. However, antibiotic susceptibility determined by the E-test may not completely represent the resistance status.
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Affiliation(s)
- Astri Dewayani
- Oita University Faculty of Medicine, Department of Infectious Disease Control, Yufu, Oita, Japan
- Faculty of Medicine, Department of Anatomy, Histology and Pharmacology, Universitas Airlangga, Surabaya, Indonesia
- Institute of Tropical Disease, Helicobacter pylori and Microbiota Study Group, Universitas Airlangga, Surabaya, Indonesia
| | - Kartika Afrida Fauzia
- Institute of Tropical Disease, Helicobacter pylori and Microbiota Study Group, Universitas Airlangga, Surabaya, Indonesia
- Oita University Faculty of Medicine, Department of Environmental and Preventive Medicine, Yufu, Oita, Japan
- Faculty of Medicine, Department of Public Health and Preventive Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Ricky Indra Alfaray
- Institute of Tropical Disease, Helicobacter pylori and Microbiota Study Group, Universitas Airlangga, Surabaya, Indonesia
- Oita University Faculty of Medicine, Department of Environmental and Preventive Medicine, Yufu, Oita, Japan
| | - Langgeng Agung Waskito
- Institute of Tropical Disease, Helicobacter pylori and Microbiota Study Group, Universitas Airlangga, Surabaya, Indonesia
- Faculty of Medicine, Department of Medical Physiology and Biochemistry, Universitas Airlangga, Surabaya, Indonesia
| | - Dalla Doohan
- Faculty of Medicine, Department of Anatomy, Histology and Pharmacology, Universitas Airlangga, Surabaya, Indonesia
- Institute of Tropical Disease, Helicobacter pylori and Microbiota Study Group, Universitas Airlangga, Surabaya, Indonesia
| | - Purwo Sri Rejeki
- Faculty of Medicine, Department of Medical Physiology and Biochemistry, Universitas Airlangga, Surabaya, Indonesia
| | - Mohammed Abdullah Alshawsh
- Faculty of Medicine, Department of Pharmacology, Universiti Malaya, Kuala Lumpur, Malaysia
- Faculty of Medicine, School of Clinical Sciences, Nursing and Health Sciences, Monash University, Clayton, VIC, Australia
| | - Yudith Annisa Ayu Rezkitha
- Institute of Tropical Disease, Helicobacter pylori and Microbiota Study Group, Universitas Airlangga, Surabaya, Indonesia
- Faculty of Medicine, Department of Internal Medicine, University of Muhammadiyah Surabaya, Surabaya, Indonesia
| | - Yoshio Yamaoka
- Oita University Faculty of Medicine, Department of Environmental and Preventive Medicine, Yufu, Oita, Japan
- Department of Medicine, Gastroenterology and Hepatology Section, Baylor College of Medicine, Houston, Texas, United States of America
- Research Center for Global and Local Infectious Diseases, Oita University, Yufu, Oita, Japan
- Faculty of Medicine, Department of Internal Medicine, Division of Gastroentero-Hepatology, Dr. Soetomo Teaching Hospital, Universitas Airlangga, Surabaya, Indonesia
| | - Muhammad Miftahussurur
- Institute of Tropical Disease, Helicobacter pylori and Microbiota Study Group, Universitas Airlangga, Surabaya, Indonesia
- Faculty of Medicine, Department of Internal Medicine, Division of Gastroentero-Hepatology, Dr. Soetomo Teaching Hospital, Universitas Airlangga, Surabaya, Indonesia
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26
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Zhang L, Zhao M, Fu X. Gastric microbiota dysbiosis and Helicobacter pylori infection. Front Microbiol 2023; 14:1153269. [PMID: 37065152 PMCID: PMC10098173 DOI: 10.3389/fmicb.2023.1153269] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 03/14/2023] [Indexed: 04/18/2023] Open
Abstract
Helicobacter pylori (H. pylori) infection is one of the most common causes of gastric disease. The persistent increase in antibiotic resistance worldwide has made H. pylori eradication challenging for clinicians. The stomach is unsterile and characterized by a unique niche. Communication among microorganisms in the stomach results in diverse microbial fitness, population dynamics, and functional capacities, which may be positive, negative, or neutral. Here, we review gastric microecology, its imbalance, and gastric diseases. Moreover, we summarize the relationship between H. pylori and gastric microecology, including non-H. pylori bacteria, fungi, and viruses and the possibility of facilitating H. pylori eradication by gastric microecology modulation, including probiotics, prebiotics, postbiotics, synbiotics, and microbiota transplantation.
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Affiliation(s)
- Ling Zhang
- Department of Gastroenterology, Clinical Medical College, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, China
| | - Ming Zhao
- Department of Gastroenterology, Clinical Medical College, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, China
| | - Xiangsheng Fu
- Department of Gastroenterology, Clinical Medical College, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, China
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Hua Z, Shen R, Lu B, Li M, Zhou P, Wu J, Dong W, Zhou Q, Zhang J. Weifuchun alters tongue flora and decreases serum trefoil factor I levels in gastric intestinal metaplasia: A CONSORT-compliant article. Medicine (Baltimore) 2022; 101:e31407. [PMID: 36397419 PMCID: PMC9666156 DOI: 10.1097/md.0000000000031407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 09/29/2022] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE To explore the molecular mechanisms of Weifuchun in the treatment of gastric intestinal metaplasia (GIM), we designed a preclinical pilot study to examine potential markers of disease progression based on alterations in the tongue flora. METHODS Total 27 patients with GIM were treated with Weifuchun for 4 weeks and 26 volunteers as controls. Tongue coating bacteria were profiled using 16S rDNA high-throughput sequencing. Serum pepsinogen I and II levels were detected using the latex immunoturbidimetric assay. The levels of serum trefoil factor I was detected by ELISA. Microplate-based quantification was used to detect serum total bile acid (TBA). RESULTS After treatment, the relative abundance of 4 dominant tongue coating genera (Granulicatella, Gemella, Lachnoanaerobaculum, and Neisseria) increased significantly wheras Alloprevotella, [Eubacterium] nodatum group, Prevotell, and Ruminococcaceae UCG-014 decreased (P < .05). The results showed that Alloprevotella and 3 rare tongue coating genera (Lautropia, Treponema 2, and Aliihoeflea) might be potential markers or target flora for the treatment of GIM. Kyoto encyclopedia of genes and genomes (KEGG) function prediction analysis showed that Weifuchun may regulate bile secretion and folate biosynthesis in patients with GIM. The level of serum trefoil factor I decreased significantly in response to Weifuchun treatment, which was consistent with the decrease in folate biosynthesis predicted by KEGG. CONCLUSION Weifuchun may restore the balance of tongue flora by decreasing the levels of serum trefoil factor I, thereby providing a new way to measuring the underlying effectiveness and potential mechanisms of action of this traditional Chinese medicinal compound in the treatment of GIM.
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Affiliation(s)
- Zhaolai Hua
- Institute of Tumor Prevention and Control, People’s Hospital of Yangzhong City, Yangzhong, China
- Guangxi Key Laboratory of Rare and Endangered Animal Ecology, Guangxi Normal University, Guilin, China
| | - Rui Shen
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medical, Nanjing, China
| | - Bin Lu
- Department of Oncology, People’s Hospital of Yangzhong City, Yangzhong, China
| | - Meifeng Li
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medical, Nanjing, China
| | - Ping Zhou
- Institute of Tumor Prevention and Control, People’s Hospital of Yangzhong City, Yangzhong, China
| | - Juan Wu
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medical, Nanjing, China
| | - Wei Dong
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medical, Nanjing, China
| | - Qihai Zhou
- Guangxi Key Laboratory of Rare and Endangered Animal Ecology, Guangxi Normal University, Guilin, China
| | - Junfeng Zhang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medical, Nanjing, China
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Zhang L, Chen X, Ren B, Zhou X, Cheng L. Helicobacter pylori in the Oral Cavity: Current Evidence and Potential Survival Strategies. Int J Mol Sci 2022; 23:ijms232113646. [PMID: 36362445 PMCID: PMC9657019 DOI: 10.3390/ijms232113646] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/03/2022] [Accepted: 11/05/2022] [Indexed: 11/11/2022] Open
Abstract
Helicobacter pylori (H. pylori) is transmitted primarily through the oral–oral route and fecal–oral route. The oral cavity had therefore been hypothesized as an extragastric reservoir of H. pylori, owing to the presence of H. pylori DNA and particular antigens in distinct niches of the oral cavity. This bacterium in the oral cavity may contribute to the progression of periodontitis and is associated with a variety of oral diseases, gastric eradication failure, and reinfection. However, the conditions in the oral cavity do not appear to be ideal for H. pylori survival, and little is known about its biological function in the oral cavity. It is critical to clarify the survival strategies of H. pylori to better comprehend the role and function of this bacterium in the oral cavity. In this review, we attempt to analyze the evidence indicating the existence of living oral H. pylori, as well as potential survival strategies, including the formation of a favorable microenvironment, the interaction between H. pylori and oral microorganisms, and the transition to a non-growing state. Further research on oral H. pylori is necessary to develop improved therapies for the prevention and treatment of H. pylori infection.
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Affiliation(s)
- Lin Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu 610041, China
| | - Xi Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu 610041, China
| | - Biao Ren
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Xuedong Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu 610041, China
| | - Lei Cheng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu 610041, China
- Correspondence:
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Hu Y, Xu X, Ouyang YB, He C, Li NS, Xie C, Peng C, Zhu ZH, Xie Y, Shu X, Lu NH, Zhu Y. Analysis of oral microbiota alterations induced by Helicobacter pylori infection and vonoprazan-amoxicillin dual therapy for Helicobacter pylori eradication. Helicobacter 2022; 27:e12923. [PMID: 36036087 DOI: 10.1111/hel.12923] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/22/2022] [Accepted: 07/27/2022] [Indexed: 12/09/2022]
Abstract
BACKGROUND The oral cavity is considered a potential reservoir of Helicobacter pylori (H. pylori), and the imbalance of oral microbiota directly reflects the health of the host. We aimed to explore the relationship among oral microbiota, H. pylori infection, and vonoprazan-amoxicillin (VA) dual therapy for H. pylori eradication. METHODS Helicobacter pylori-positive patients were randomized into low- or high-dose VA dual therapy (i.e., amoxicillin 1 g b.i.d. or t.i.d. and vonoprazan 20 mg b.i.d) for 7 or 10 days. H. pylori-negative patients served as normal controls. Saliva samples were collected from 41 H. pylori-positive patients and 13 H. pylori-negative patients. The oral microbiota was analyzed by 16S rRNA gene sequencing, followed by bioinformatics analysis. RESULTS Helicobacter pylori-positive patients had higher richness and diversity and better evenness of oral microbiota than normal controls. Beta diversity analysis estimated by Bray-Curtis or weighted UniFrac showed distinct clustering between H. pylori-positive patients and normal controls. The number of bacterial interactions was reduced in H. pylori-positive patients compared with that in negative patients. Forty-one patients evaluated before and after successful H. pylori eradication were divided into low (L-VA) and high dose (H-VA) amoxicillin dose groups. The alpha and beta diversity of the oral microbiota between L-VA and H-VA patients exhibited no differences at the three time points (before eradication, after eradication, and at confirmation of H. pylori infection cure). CONCLUSION Helicobacter pylori infection could alter the diversity, composition, and bacterial interactions of the oral microbiota. Both L-VA and H-VA dual therapy showed minimal influence on the oral microbiota.
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Affiliation(s)
- Yi Hu
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Xin Xu
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Yao-Bin Ouyang
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Cong He
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Nian-Shuang Li
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Chuan Xie
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Chao Peng
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Zhen-Hua Zhu
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Yong Xie
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Xu Shu
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Nong-Hua Lu
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Yin Zhu
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China
- JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
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Wang S, Zhang M, Yu L, Tian F, Lu W, Wang G, Chen W, Wang J, Zhai Q. Evaluation of the Potential Protective Effects of Lactobacillus Strains against Helicobacter pylori Infection: A Randomized, Double-Blinded, Placebo-Controlled Trial. THE CANADIAN JOURNAL OF INFECTIOUS DISEASES & MEDICAL MICROBIOLOGY = JOURNAL CANADIEN DES MALADIES INFECTIEUSES ET DE LA MICROBIOLOGIE MEDICALE 2022; 2022:6432750. [PMID: 36193094 PMCID: PMC9525740 DOI: 10.1155/2022/6432750] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 08/23/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND The beneficial effects of probiotic supplementation standard antibiotic therapies for Helicobacter pylori infection have been verified, but the ability of probiotic monotherapy to eradicate H. pylori remains unclear. AIM To evaluate the accuracy and efficacy of specific Lactobacillus strains against H. pylori infection. METHODS Seventy-eight patients with H. pylori infection were treated with strain L. crispatus G14-5M (L. crispatus CCFM1118) or L. helveticus M2-09-R02-S146 (L. helveticus CCFM1121) or L. plantarum CCFM8610 at a dose of 2 g twice daily for one month. 14C-urea breath test, the gastrointestinal symptom rating scale, serum pepsinogen concentrations, and serum cytokine concentrations of patients were measured at baseline and end-of-trial to analyze the effect of the Lactobacillus strains in eradicating H. pylori infection and reducing gastrointestinal discomfort in patients. In addition, the composition and abundance of the intestinal microbiota of patients were also measured at end-of-trial. RESULTS The 14C-urea breath test value of the three Lactobacillus treatment groups had decreased significantly, and the eradication rate of H. pylori had increased by the end of the trial. In particular, the eradication rate in the G14-5M treatment group was significantly higher than the placebo group (70.59% vs. 15.38%, P=0.0039), indicating that one-month administration of the G14-5M regimen was sufficient to eradicate H. pylori infection. The ingestion of Lactobacillus strains also ameliorated the gastrointestinal symptom rating scale scores, and the serum interleukin-8 concentrations of H. pylori-infected patients appeared to modulate the gut microbiota of patients. However, none of the Lactobacillus strains had a significant effect on general blood physiological characteristics, serum tumor necrosis factor α concentrations, or serum pepsinogen concentrations in the patients. CONCLUSION Three Lactobacillus strains significantly alleviate the gastrointestinal discomfort and the gastric inflammatory response of H. pylori-infected patients. The activity of probiotics in eradicating H. pyloriinfection may be species/strain specific.
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Affiliation(s)
- Shumin Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Meiyi Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Leilei Yu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Fengwei Tian
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wenwei Lu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Gang Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wei Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Jialin Wang
- Department of Emergency, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Qixiao Zhai
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
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Gut Microbiota Dysbiosis in the Development and Progression of Gastric Cancer. JOURNAL OF ONCOLOGY 2022; 2022:9971619. [PMID: 36072968 PMCID: PMC9441395 DOI: 10.1155/2022/9971619] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 07/29/2022] [Indexed: 12/12/2022]
Abstract
Objectives This study aims to explore gut microbiota dysbiosis in the histological stages of gastric cancer (GC). Methods Feces samples and clinical characteristics were collected from patients with different stages of GC, including 15 superficial gastritis (SG), 13 atrophic gastritis (AG), 8 gastric mucosal atypical hyperplasia (GMAH), and 15 advanced GC cases. The diversity and composition of gut microbiota among the four groups were determined by sequencing the V4 region of bacterial 16S rRNA genes. Results Reduced gut microbial alpha diversity and altered dissimilarity of the microbial community structure were found among the four groups. In addition, 18 species, 6 species, 6 species, and 16 species of bacteria were enriched in the SG, AG, GMAH, and GC groups, respectively, using the linear discriminant analysis (LDA) effect size (LEfSe) analyses. Besides, we found that two new genera, Scardovia and Halomonas, are associated with GC and the metabolic pathways of Genetic information processing and Circulatory System were more abundant in the GC group compared with noncancer groups. Conclusions We identified differences in microbial compositional changes across stages of GC. Six genera and two metabolic pathways were more abundant in the GC group than noncancer groups, suggesting that these findings may contribute to the therapy strategies in GC in the near feature.
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Chen X, Wang N, Wang J, Liao B, Cheng L, Ren B. The interactions between oral-gut axis microbiota and Helicobacter pylori. Front Cell Infect Microbiol 2022; 12:914418. [PMID: 35992177 PMCID: PMC9381925 DOI: 10.3389/fcimb.2022.914418] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 07/14/2022] [Indexed: 11/13/2022] Open
Abstract
In the human body, each microbial habitat exhibits a different microbial population pattern, and these distinctive microflorae are highly related to the development of diseases. The microbial interactions from host different niches are becoming crucial regulators to shape the microbiota and their physiological or pathological functions. The oral cavity and gut are the most complex and interdependent microbial habitats. Helicobacter pylori is one of the most important pathogens from digestive tract, especially the stomach, due to its direct relationships with many gastric diseases including gastric cancer. H. pylori infections can destroy the normal gastric environment and make the stomach a livable channel to enhance the microbial interactions between oral cavity and gut, thus reshaping the oral and gut microbiomes. H. pylori can be also detected in the oral and gut, while the interaction between the oral-gut axis microbiota and H. pylori plays a major role in H. pylori’s colonization, infection, and pathogenicity. Both the infection and eradication of H. pylori and its interaction with oral-gut axis microbiota can alter the balance of the microecology of the oral-gut axis, which can affect the occurrence and progress of related diseases. The shift of oral-gut axis microbiota and their interactions with H. pylori maybe potential targets for H. pylori infectious diagnosis and treatment.
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Affiliation(s)
- Xi Chen
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China School of Stomatology, Sichuan University, Chengdu, China
- Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Nanxi Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China School of Stomatology, Sichuan University, Chengdu, China
| | - Jiannan Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China School of Stomatology, Sichuan University, Chengdu, China
| | - Binyou Liao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China School of Stomatology, Sichuan University, Chengdu, China
| | - Lei Cheng
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China School of Stomatology, Sichuan University, Chengdu, China
- Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- *Correspondence: Lei Cheng, ; Biao Ren,
| | - Biao Ren
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China School of Stomatology, Sichuan University, Chengdu, China
- *Correspondence: Lei Cheng, ; Biao Ren,
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WANG J, WANG H, XIAO Y, GUO J, ZHAO Y. Microecology-turbidity toxin theory: correlation between helicobacter pylori infection and manifestation of tongue and gastroscopy. J TRADIT CHIN MED 2022; 42:458-462. [PMID: 35610017 PMCID: PMC9924764 DOI: 10.19852/j.cnki.jtcm.20210612.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Accepted: 03/23/2021] [Indexed: 04/16/2023]
Abstract
OBJECTIVE To clarify the relationship between helicobacter pylori (Hp) infection, tongue manifestation and gastroscopic manifestation, and explore the mechanism of action of "oral-gastric microecology" in the occurrence and development of stomach-related diseases. MEDHODS A total of 1100 patients were divided into Hp positive group and Hp negative group according to 13C breath test results. The tongue manifestation materials from patients were collected to make tongue printing slides for morphological observation of exfoliative cells from tongue coating, and electronic gastroscopy was performed on the patients and the data was analyzed. RESULTS Hp infection rate was about 45.95%; and the greasy coating was mostly observed in Hp positive group (63.14%, 0.05). The total tongue coating distribution was as follows: yellow greasy coating (56.66%, 0.05) > yellow coating > white coating > white greasy coating. The gastric mucosal roughness and mucosal hematoplastic plaques in the two groups were more common in the Hp positive group ( 0.05). There was a significant difference in the granular subgroup and in the rough mucosal group (< 0.05). CONCLUSIONS Hp infection is more commonly observed in yellow greasy coating, and this can be used as a reference for Traditional Chinese Medicine in determining whether it is Hp infection or not. Mucosal granule roughness, hyperemia, and oral Hp showed association with Hp infection in the stomach and interacted with micro-ecological environment that is composed of the oral cavity.
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Affiliation(s)
- Jin WANG
- 1 Department of Integrated Chinese and Western Medicine, Hebei University of Chinese Medicine, Shijiazhuang 050000, China
| | - Huijie WANG
- 2 the Traditional Chinese Medicine Hospital of Shijiazhuang Affiliated to Hebei University of Chinese Medicine, Shijiazhuang 050000, China
| | - Ying XIAO
- 3 Department of Bioengineering, School of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050000, China
| | - Jiaxuan GUO
- 2 the Traditional Chinese Medicine Hospital of Shijiazhuang Affiliated to Hebei University of Chinese Medicine, Shijiazhuang 050000, China
| | - Yubin ZHAO
- 1 Department of Integrated Chinese and Western Medicine, Hebei University of Chinese Medicine, Shijiazhuang 050000, China
- 2 the Traditional Chinese Medicine Hospital of Shijiazhuang Affiliated to Hebei University of Chinese Medicine, Shijiazhuang 050000, China
- 4 Shijiazhuang People's Hospital, Shijiazhuang 050000, China
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Alkhaldi NK, Alghamdi WK, Alharbi MH, Almutairi AS, Alghamdi FT. The Association Between Oral Helicobacter pylori and Gastric Complications: A Comprehensive Review. Cureus 2022; 14:e24703. [PMID: 35663643 PMCID: PMC9162906 DOI: 10.7759/cureus.24703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2022] [Indexed: 12/13/2022] Open
Abstract
Helicobacter pylori (H. pylori) is linked to chronic gastritis, duodenal or gastric ulcers, and gastric cancer (GC). Because the oral cavity is the first component of the gastrointestinal tract (GIT) and the entrance point for H. pylori, it has been proposed as a possible reservoir of H. pylori. As a result, a putative oral-oral transmission pathway of H. pylori poses the possibility of whether personal contact, such as kissing or sharing a meal, might trigger H. pylori transmission. As a result, several investigations have been done on this issue using various approaches for detecting H. pylori in oral and stomach samples. Furthermore, the relationship between H. pylori and gastrointestinal disorders has yet to be studied. The evidence for the association between H. pylori and gastric diseases and their complications is still a controversial subject due to the existing literature in this review. The goal of this comprehensive review was to collect all available published articles and critically evaluate existing investigations looking into the relationship between oral H. pylori contamination and the danger of gastric complications. Few studies indicated an association between H. pylori and gastric diseases. Furthermore, more longitudinal randomized clinical studies to further investigate the association between H. pylori and gastric diseases are warranted.
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Affiliation(s)
- Njoud K Alkhaldi
- General Medicine and Surgery, College of Medicine, Princess Nourah bint Abdulrahman University, Riyadh, SAU
| | - Waad K Alghamdi
- General Medicine and Surgery, College of Medicine, Princess Nourah bint Abdulrahman University, Riyadh, SAU
| | - Maryam H Alharbi
- General Medicine and Surgery, College of Medicine, Princess Nourah bint Abdulrahman University, Riyadh, SAU
| | - Albandri S Almutairi
- General Medicine and Surgery, College of Medicine, Princess Nourah bint Abdulrahman University, Riyadh, SAU
| | - Faisal T Alghamdi
- Department of Oral Biology, Faculty of Dentistry, King Abdulaziz University, Jeddah, SAU
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Park SH, Shin NR, Yang M, Bose S, Kwon O, Nam DH, Lee JH, Song EJ, Nam YD, Kim H. A Clinical Study on the Relationship Among Insomnia, Tongue Diagnosis, and Oral Microbiome. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2022; 50:773-797. [PMID: 35380093 DOI: 10.1142/s0192415x2250032x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Currently, there is a lack of adequate methods to assess insomnia objectively. This study addresses the usefulness of tongue features and oral microbial profile as a potential diagnostic biomarker of insomnia. One hundred insomniac patients and 20 healthy control subjects were selected. Their demographic and clinical characteristics, as well as the tongue diagnostic indices and oral microbial profile, were examined. Compared to the control group, insomniac patients showed a higher abnormal low-frequency/high-frequency (LF/HF) ratio. In tongue diagnosis, the indices related to lightness of tongue body and tongue coating were higher in the insomniac group vs. the control group. Furthermore, linear discriminant analysis (LDA) of oral microbial population revealed that the relative abundances of Clostridia, Veillonella, Bacillus and Lachnospiraceae were significantly higher in the insomniac patients than the control group. Additionally, the tongue features of the insomniac group exhibited that the non-coating group had a poor sleep condition compared to the thick-coating group, although the difference was insignificant. On the other hand, the oral microbial communities of the insomniac patients revealed greater alpha and beta diversities in the non-coating group vs. the thick-coating group. The alpha and beta diversities were higher in orotype1 than orotype2. Collectively, this study highlighted that the lightness of tongue body and tongue coating as well as oral microbial profiles of SR1, Actinobacteria, Clostridia and Lachnospiraceae_unclassified could be considered potential biomarkers of insomnia.
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Affiliation(s)
- Seo-Hyun Park
- Department of Rehabilitation Medicine of Korean Medicine, Dongguk University Goyang, Republic of Korea
| | - Na Rae Shin
- Department of Rehabilitation Medicine of Korean Medicine, Dongguk University Goyang, Republic of Korea
| | - Meng Yang
- Department of Rehabilitation Medicine of Korean Medicine, Dongguk University Goyang, Republic of Korea
| | - Shambhunath Bose
- Department of Life Science, Sri Sathya Sai University for Human Excellence Navanihal, Okali Post, Kamalapur, Kalaburagi, Karnataka 585313, India
| | - Ojin Kwon
- Division of Clinical Medicine, Korea Institute of Oriental Medicine, Republic of Korea
| | - Dong-Hyun Nam
- Department of Biofunctional Medicine and Diagnosis, College of Korean Medicine Sangji University, Wonju 26382, Republic of Korea
| | - Jun-Hwan Lee
- Division of Clinical Medicine, Korea Institute of Oriental Medicine, Republic of Korea
| | - Eun-Ji Song
- Research Group of Healthcare, Korea Food Research Institute, Wanju-gun 55365, Republic of Korea
- Department of Food Biotechnology, Korea University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Young-Do Nam
- Research Group of Healthcare, Korea Food Research Institute, Wanju-gun 55365, Republic of Korea
- Department of Food Biotechnology, Korea University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Hojun Kim
- Department of Rehabilitation Medicine of Korean Medicine, Dongguk University Goyang, Republic of Korea
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Guo Y, Xu C, Gong R, Hu T, Zhang X, Xie X, Chi J, Li H, Xia X, Liu X. Exosomal CagA from Helicobacter pylori aggravates intestinal epithelium barrier dysfunction in chronic colitis by facilitating Claudin-2 expression. Gut Pathog 2022; 14:13. [PMID: 35331316 PMCID: PMC8944046 DOI: 10.1186/s13099-022-00486-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 03/10/2022] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The chronic infection with Helicobacter pylori (H. pylori), especially cytotoxin-associated gene A-positive (CagA+) strains, has been associated with various extragastric disorders. Evaluating the potential impacts of virulence factor CagA on intestine may provide a better understanding of H. pylori pathogenesis such as colitis. The intestinal mucosal barrier is essential for maintaining its integrity and functions. However, how persistent CagA+ H. pylori colonization influences barrier disruption and thereby affects chronic colitis is not fully understood. RESULTS Chronic colitis models of CagA+ H. pylori-colonized mice treated with 2% Dextran sulphate sodium (DSS) were established to assess the disease activity and pertinent expression of tight junction proteins closely related to mucosal integrity. The aggravating effect of CagA+ H. pylori infection on DSS-induced chronic colitis was confirmed in mouse models. In addition, augmented Claudin-2 expression was detected in CagA+ H. pylori infection conditions and selected for mechanistic analysis. Next, GES-1 human gastric epithelial cells were cultured with CagA+ H. pylori or a recombinant CagA protein, and exosomes isolated from conditioned media were then identified. We assessed the Claudin-2 levels after exposure to CagA+ exosomes, CagA- exosomes, and IFN-γ incubation, revealing that CagA+ H. pylori compromised the colonic mucosal barrier and facilitated IFN-γ-induced intestinal epithelial destruction through CagA-containing exosome-mediated mechanisms. Specifically, CagA upregulated Claudin-2 expression at the transcriptional level via a CDX2-dependent mechanism to slow the restoration of wounded mucosa in colitis in vitro. CONCLUSIONS These data suggest that exosomes containing CagA facilitate CDX2-dependent Claudin-2 maintenance. The exosome-dependent mechanisms of CagA+ H. pylori infection are indispensable for damaging the mucosal barrier integrity in chronic colitis, which may provide a new idea for inflammatory bowel disease (IBD) treatment.
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Affiliation(s)
- Yinjie Guo
- Department of Gastroenterology, Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Changsha, 410013, China.,Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Canxia Xu
- Department of Gastroenterology, Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Changsha, 410013, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Changsha, 410013, China
| | - Renjie Gong
- Department of Gastroenterology, Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Changsha, 410013, China
| | - Tingzi Hu
- Department of Gastroenterology, Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Changsha, 410013, China
| | - Xue Zhang
- Department of Gastroenterology, Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Changsha, 410013, China
| | - Xiaoran Xie
- Department of Gastroenterology, Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Changsha, 410013, China
| | - Jingshu Chi
- Department of Gastroenterology, Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Changsha, 410013, China
| | - Huan Li
- Department of Gastroenterology, Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Changsha, 410013, China
| | - Xiujuan Xia
- Department of Gastroenterology, Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Changsha, 410013, China.
| | - Xiaoming Liu
- Department of Gastroenterology, Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Changsha, 410013, China. .,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Changsha, 410013, China.
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Cui J, Hou S, Liu B, Yang M, Wei L, Du S, Li S. Species composition and overall diversity are significantly correlated between the tongue coating and gastric fluid microbiomes in gastritis patients. BMC Med Genomics 2022; 15:60. [PMID: 35300688 PMCID: PMC8932003 DOI: 10.1186/s12920-022-01209-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 03/01/2022] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND In traditional Chinese medicine, it is believed that the "tongue coating is produced by fumigation of stomach gas", and that tongue coating can reflect the health status of humans, especially stomach health. Therefore, studying the relationship between the microbiome of the tongue coating and the gastric fluid is of great significance for understanding the biological basis of tongue diagnosis. METHODS This paper detected the microbiomes of the tongue coating and the gastric fluid in 35 gastritis patients using metagenomic sequencing technology, systematically constructed the microbial atlas of tongue coating and gastric juice, and first described the similar characteristics between the two sites. RESULTS There was a significant correlation between tongue coating and gastric juice in terms of microbial species composition and overall diversity. In terms of species composition, it was found that the two sites were dominated by five phyla, namely, Actinobacteria, Bacteroidetes, Firmicutes, Fusobacteria and Proteobacteria, and that most of the gastric microbial species could be detected from the patient's own tongue coating. In terms of overall diversity, a significant correlation was found between the alpha diversity of the tongue coating microbiome and the gastric juice microbiome. Furthermore, in terms of abundance, 4 classes, 2 orders, 4 families, 18 genera and 46 species were found to significantly correlate between the tongue coating and the gastric fluid. CONCLUSIONS The results provide microbiome-based scientific evidence for tongue diagnosis, and offer a new perspective for understanding the biological basis of tongue diagnosis.
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Affiliation(s)
- Jiaxing Cui
- Institute of TCM-X, MOE Key Laboratory of Bioinformatics / Bioinformatics Division, BNRist / Department of Automation, Tsinghua University, Beijing, 100084, China.,China Industrial Control Systems Cyber Emergency Response Team, Beijing, 100040, China
| | - Siyu Hou
- Institute of TCM-X, MOE Key Laboratory of Bioinformatics / Bioinformatics Division, BNRist / Department of Automation, Tsinghua University, Beijing, 100084, China
| | - Bing Liu
- Beijing Lotus BioMedical Technology Co., Ltd., Beijing, 102206, China
| | - Mingran Yang
- Institute of TCM-X, MOE Key Laboratory of Bioinformatics / Bioinformatics Division, BNRist / Department of Automation, Tsinghua University, Beijing, 100084, China
| | - Lai Wei
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, 510060, China
| | - Shiyu Du
- China-Japan Friendship Hospital, Beijing, 100029, China.
| | - Shao Li
- Institute of TCM-X, MOE Key Laboratory of Bioinformatics / Bioinformatics Division, BNRist / Department of Automation, Tsinghua University, Beijing, 100084, China. .,School of Life Sciences and Center for Synthetic and Systems Biology, Tsinghua University, Beijing, 100084, China.
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White B, Winte M, DeSipio J, Phadtare S. Clinical Factors Implicated in Antibiotic Resistance in Helicobacter pylori Patients. Microorganisms 2022; 10:322. [PMID: 35208776 PMCID: PMC8876575 DOI: 10.3390/microorganisms10020322] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 01/25/2022] [Accepted: 01/28/2022] [Indexed: 02/01/2023] Open
Abstract
Helicobacter pylori is a common gastric pathogen associated with multiple clinical syndromes, including cancer. Eradication rates of H. pylori remain suboptimal despite the progress made in the past few decades in improving treatment strategies. The low eradication rates are mainly driven by antibiotic resistance of H. pylori. Non-invasive molecular testing to identify patients with antibiotic-resistant H. pylori represents a promising therapeutic avenue, however this technology currently remains limited by availability, costs, and lack of robust validation. Moreover, there is insufficient evidence to demonstrate that resistance-testing-based treatment approaches are superior to appropriately designed empiric strategies. Consensus guidelines recommend use of proven locally effective regimens; however, eradication data are inconsistently generated in several regions of the world. In this review, we describe several clinical factors associated with increased rates of antibiotic resistant H. pylori, including history of previous antibiotic exposure, increasing age, female gender, ethnicity/race, extent of alcohol use, and non-ulcer dyspepsia. Assessment of these factors may aid the clinician in choosing the most appropriate empiric treatment strategy for each patient. Future study should aim to identify locally effective therapies and further explore the clinical factors associated with antibiotic resistance.
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Affiliation(s)
- Brian White
- Department of Biomedical Sciences, Cooper Medical School of Rowan University, Camden, NJ 08103, USA; (B.W.); (J.D.)
| | - Maria Winte
- Department of Internal Medicine, Thomas Jefferson University Hospital, Philadelphia, PA 19107, USA;
| | - Joshua DeSipio
- Department of Biomedical Sciences, Cooper Medical School of Rowan University, Camden, NJ 08103, USA; (B.W.); (J.D.)
- Department of Gastroenterology, Cooper University Hospital, Camden, NJ 08103, USA
| | - Sangita Phadtare
- Department of Biomedical Sciences, Cooper Medical School of Rowan University, Camden, NJ 08103, USA; (B.W.); (J.D.)
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Yang H, Wei B, Hu B. Chronic inflammation and long-lasting changes in the gastric mucosa after Helicobacter pylori infection involved in gastric cancer. Inflamm Res 2021; 70:1015-1026. [PMID: 34549319 DOI: 10.1007/s00011-021-01501-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 07/13/2021] [Accepted: 09/09/2021] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE Helicobacter pylori (H. pylori) infects approximately half of the world's population, as one of the most common chronic infections. H. pylori infection has been widely recognized as a major risk factor for gastric cancer (GC). METHODS Eradication treatment is considered to abolish the inflammatory response and prevent progression to GC. However, only 1-3% of H. pylori-infected patients develop GC, whereas GC can occur even after eradicating H. pylori. In addition, the incidence of GC following H. pylori infection is significantly higher compared to the gross incidence induced by all causes, although eradicating H. pylori reduces the risk of developing GC. RESULTS Therefore, it is reasonable to hypothesize that H. pylori infection results in changes that persist even after its eradication. Several of these changes may not be reversible within a short time, including the status of inflammation, the dysfunction of immunity and apoptosis, mitochondrial changes, aging and gastric dysbacteriosis. CONCLUSION The present review article aimed to discuss these potential long-lasting changes induced by H. pylori infection that may follow the eradication of H. pylori and contribute to the development of GC.
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Affiliation(s)
- Hang Yang
- Department of Gastroenterology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, People's Republic of China
| | - Bin Wei
- Department of Gastroenterology, The First Hospital of Xi'an City, Xi'an, 710002, Shanxi, People's Republic of China
| | - Bing Hu
- Department of Gastroenterology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, People's Republic of China.
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Yuan Z, Xiao S, Li S, Suo B, Wang Y, Meng L, Liu Z, Yin Z, Xue Y, Zhou L. The impact of Helicobacter pylori infection, eradication therapy, and probiotics intervention on gastric microbiota in young adults. Helicobacter 2021; 26:e12848. [PMID: 34448282 DOI: 10.1111/hel.12848] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 07/31/2021] [Accepted: 08/18/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND The impact of probiotics on non-Helicobacter pylori gastric microbiota and its role in microbial restoration after eradication were relatively unknown. We aimed to explore the effect of H. pylori eradication and probiotic intervention on gastric microbiota in young adults. METHODS Fifty-six H. pylori-negative and 95 H. pylori-positive subjects aged 19-30 were included in this study. H. pylori-infected individuals were randomly assigned to quadruple therapy, probiotics supplemented quadruple therapy, or probiotics monotherapy group. Gastric mucosa and gastric juice samples were collected before and 2 months after treatment for 16SrRNA gene sequencing. RESULTS The gastric microbial community structure and composition differed from H. pylori-negative subjects 2 months after successful H. pylori eradication. The α diversity of gastric mucosal microbiota significantly increased and was higher than H. pylori-negative subjects, while the α diversity of gastric juice microbiota decreased and was lower than the H. pylori-negative. After probiotics supplemented eradication treatment, Bifidobacterium was enriched in gastric mucosa, Lactobacillus was enriched in gastric juice, potentially pathogenic bacteria such as Fusobacterium and Campylobacter decreased, and the microbial diversity was closer to that of H. pylori-negative subjects compared to quadruple therapy group. Probiotics monotherapy significantly altered the diversity, community structure, and composition of gastric microbiota but showed no advantage in H. pylori inhibition and upregulating beneficial bacteria such as Bifidobacterium and Lactobacillus and related metabolism pathways. Certain potentially pathogenic bacteria such as Fusobacterium increased after probiotic monotherapy. CONCLUSION H. pylori eradication significantly disrupted gastric microbiota in young adults and could not be restored in a short time. Probiotics supplementation partially helped restore the gastric dysbiosis caused by eradication therapy, but it might be unnecessary for H. pylori-infected young adults to take probiotics alone.
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Affiliation(s)
- Ziying Yuan
- Department of Gastroenterology, Peking University Third Hospital, Beijing, China.,Beijing Key Laboratory of Helicobacter pylori Infection and Upper Gastrointestinal Diseases, Peking University Third Hospital, Beijing, China
| | - Shiyu Xiao
- Department of Gastroenterology, Peking University Third Hospital, Beijing, China.,Beijing Key Laboratory of Helicobacter pylori Infection and Upper Gastrointestinal Diseases, Peking University Third Hospital, Beijing, China
| | - Sizhu Li
- Department of Gastroenterology, Peking University Third Hospital, Beijing, China.,Beijing Key Laboratory of Helicobacter pylori Infection and Upper Gastrointestinal Diseases, Peking University Third Hospital, Beijing, China
| | - Baojun Suo
- Department of Gastroenterology, Peking University Third Hospital, Beijing, China.,Beijing Key Laboratory of Helicobacter pylori Infection and Upper Gastrointestinal Diseases, Peking University Third Hospital, Beijing, China
| | - Ye Wang
- Department of Gastroenterology, Peking University Third Hospital, Beijing, China.,Beijing Key Laboratory of Helicobacter pylori Infection and Upper Gastrointestinal Diseases, Peking University Third Hospital, Beijing, China
| | - Lingmei Meng
- Department of Gastroenterology, Peking University Third Hospital, Beijing, China.,Beijing Key Laboratory of Helicobacter pylori Infection and Upper Gastrointestinal Diseases, Peking University Third Hospital, Beijing, China
| | - Zuojing Liu
- Department of Gastroenterology, Peking University Third Hospital, Beijing, China.,Beijing Key Laboratory of Helicobacter pylori Infection and Upper Gastrointestinal Diseases, Peking University Third Hospital, Beijing, China
| | - Zhihao Yin
- Department of Gastroenterology, Peking University Third Hospital, Beijing, China.,Beijing Key Laboratory of Helicobacter pylori Infection and Upper Gastrointestinal Diseases, Peking University Third Hospital, Beijing, China
| | - Yan Xue
- Department of Gastroenterology, Peking University Third Hospital, Beijing, China.,Beijing Key Laboratory of Helicobacter pylori Infection and Upper Gastrointestinal Diseases, Peking University Third Hospital, Beijing, China
| | - Liya Zhou
- Department of Gastroenterology, Peking University Third Hospital, Beijing, China.,Beijing Key Laboratory of Helicobacter pylori Infection and Upper Gastrointestinal Diseases, Peking University Third Hospital, Beijing, China
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Ali Mohammed MM, Al Kawas S, Al-Qadhi G. Tongue-coating microbiome as a cancer predictor: A scoping review. Arch Oral Biol 2021; 132:105271. [PMID: 34610507 DOI: 10.1016/j.archoralbio.2021.105271] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/16/2021] [Accepted: 09/19/2021] [Indexed: 01/10/2023]
Abstract
OBJECTIVE The tongue microbiome has emerged as a non-invasive diagnostic and tracking prognostic tool in the detection of diseases mainly cancer. This scoping review aimed to identify the association between tongue microbiome and pre-cancer or cancer lesions. DESIGN A comprehensive electronic database search including PubMed, Web of Science, and Scopus was undertaken up to March 2021, without language or date restrictions. This review was conducted following the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) guideline. All observational studies that compared microbial community on the dorsal surface of the tongue between cancer or precancerous cases and healthy controls using NGS techniques were included. RESULTS Of 274 records identified, nine studies were eligible to be included. Despite the inconsistent observations in terms of diversity and richness, most studies reported alteration in bacterial communities between pre-cancer or cancer cases and control groups. The bacterial profile among cases was so far correlated at the phylum level with a noticeable diverse degree at the genus level. The majority of included studies reported a higher abundance of certain kinds of microorganisms as compared to healthy participants including Firmicutes, Fusobacteria and Actinobacteria at phyla level as well as Streptococcus, Actinomyces, Leptotrichia, Campylobacter, and Fusobacterium at the genus level. CONCLUSION The alteration of the tongue microbial community has been associated with several diseases mainly cancer. So, the tongue microbiome may serve as a promising diagnostic tool or as a long-term monitor in precancerous or cancer cases.
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Affiliation(s)
- Marwan Mansoor Ali Mohammed
- Department of Oral and Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, United Arab Emirates.
| | - Sausan Al Kawas
- Department of Oral and Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, United Arab Emirates.
| | - Gamilah Al-Qadhi
- Department of Basic Dental Sciences, Faculty of Dentistry, University of Science and Technology, Yemen.
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Abstract
Little is known about the influence of gastric microbiota on host metabolism, even though the stomach plays an important role in the production of hormones involved in body weight regulation and glucose homeostasis. Proton pump inhibitors (PPIs) and Helicobacter pylori alter gut microbiota, but their impact on gastric microbiota in patients with obesity and the influence of these factors on the metabolic response to bariatric surgery is not fully understood. Forty-one subjects with morbid obesity who underwent sleeve gastrectomy were included in this study. The H. pylori group was established by the detection of H. pylori using a sequencing-based method (n = 16). Individuals in whom H. pylori was not detected were classified according to PPI treatment. Gastric biopsy specimens were obtained during surgery and were analyzed by a high-throughput-sequencing method. Patients were evaluated at baseline and 3, 6, and 12 months after surgery. β-Diversity measures were able to cluster patients according to their gastric mucosa-associated microbiota composition. H. pylori and PPI treatment are presented as two important factors for gastric mucosa-associated microbiota. H. pylori reduced diversity, while PPIs altered β-diversity. Both factors induced changes in the gastric mucosa-associated microbiota composition and its predicted functions. PPI users showed lower percentages of change in the body mass index (BMI) in the short term after surgery, while the H. pylori group showed higher glucose levels and lower percentages of reduction in body weight/BMI 1 year after surgery. PPIs and H. pylori colonization could modify the gastric mucosa-associated microbiota, altering its diversity, composition, and predicted functionality. These factors may have a role in the metabolic evolution of patients undergoing bariatric surgery. IMPORTANCE The gut microbiota has been shown to have an impact on host metabolism. In the stomach, factors like proton pump inhibitor treatment and Helicobacter pylori haven been suggested to alter gut microbiota; however, the influence of these factors on the metabolic response to bariatric surgery has not been fully studied. In this study, we highlight the impact of these factors on the gastric microbiota composition. Moreover, proton pump inhibitor treatment and the presence of Helicobacter pylori could have an influence on bariatric surgery outcomes, mainly on body weight loss and glucose homeostasis. Deciphering the relationship between gastric hormones and gastric microbiota and their contributions to bariatric surgery outcomes paves the way to develop gut manipulation strategies to improve the metabolic success of bariatric surgery.
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Wen J, Lau HCH, Peppelenbosch M, Yu J. Gastric Microbiota beyond H. pylori: An Emerging Critical Character in Gastric Carcinogenesis. Biomedicines 2021; 9:1680. [PMID: 34829909 PMCID: PMC8615612 DOI: 10.3390/biomedicines9111680] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 12/27/2022] Open
Abstract
Gastric cancer (GC) is one of the global leading causes of cancer death. The association between Helicobacter pylori, which is a predominant risk factor for GC, with GC development has been well-studied. Recently, accumulating evidence has demonstrated the presence of a large population of microorganisms other than H. pylori in the human stomach. Existing sequencing studies have revealed microbial compositional and functional alterations in patients with GC and highlighted a progressive shift in the gastric microbiota in gastric carcinogenesis with marked enrichments of oral or intestinal commensals. Moreover, using a combination of gastric bacterial signatures, GC patients could be significantly distinguished from patients with gastritis. These findings, therefore, emphasize the importance of a collective microbial community in gastric carcinogenesis. Here, we provide an overview of non-H. pylori gastric microbes in gastric carcinogenesis. The molecular mechanisms of gastric microbes-related carcinogenesis and potential clinical applications of gastric microbiota as biomarkers of GC are also explored.
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Affiliation(s)
- Jun Wen
- State Key Laboratory of Digestive Disease, Department of Medicine and Therapeutics, Institute of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong; (J.W.); (H.C.-H.L.)
| | - Harry Cheuk-Hay Lau
- State Key Laboratory of Digestive Disease, Department of Medicine and Therapeutics, Institute of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong; (J.W.); (H.C.-H.L.)
| | - Maikel Peppelenbosch
- Department of Gastroenterology and Hepatology, Erasmus University Medical Center Rotterdam, Postbus 2040, 3000 CA Rotterdam, The Netherlands;
| | - Jun Yu
- State Key Laboratory of Digestive Disease, Department of Medicine and Therapeutics, Institute of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong; (J.W.); (H.C.-H.L.)
- Institute of Digestive Disease, Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
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Liang T, Liu F, Liu L, Zhang Z, Dong W, Bai S, Ma L, Kang L. Effects of Helicobacter pylori Infection on the Oral Microbiota of Reflux Esophagitis Patients. Front Cell Infect Microbiol 2021; 11:732613. [PMID: 34604113 PMCID: PMC8482873 DOI: 10.3389/fcimb.2021.732613] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 08/11/2021] [Indexed: 12/12/2022] Open
Abstract
The human oral microbiota plays a vital role in maintaining metabolic homeostasis. To explore the relationship between Helicobacter pylori (Hp) and reflux esophagitis, we collected 86 saliva samples from reflux esophagitis patients (RE group) and 106 saliva samples from healthy people (C group) for a high-throughput sequencing comparison. No difference in alpha diversity was detected between the RE and the C groups, but beta diversity of the RE group was higher than the C group. Bacteroidetes was more abundant in the RE group, whereas Firmicutes was more abundant in the C group. The linear discriminant analysis effect size analysis demonstrated that the biomarkers of the RE group were Prevotella, Veillonella, Leptotrichia, and Actinomyces, and the biomarkers of the C group were Lautropia, Gemella, Rothia, and Streptococcus. The oral microbial network structure of the C group was more complex than that of the RE group. Second, to explore the effect of Hp on the oral microbiota of RE patients, we performed the 14C-urea breath test on 45 of the 86 RE patients. We compared the oral microbiota of 33 Hp-infected reflux esophagitis patients (REHpp group) and 12 non-Hp-infected reflux esophagitis patients (REHpn group). No difference in alpha diversity was observed between the REHpn and REHpp groups, and beta diversity of the REHpp group was significantly lower than that of the REHpn group. The biomarkers in the REHpp group were Veillonella, Haemophilus, Selenomonas, Megasphaera, Oribacterium, Butyrivibrio, and Campylobacter; and the biomarker in the REHpn group was Stomatobaculum. Megasphaera was positively correlated with Veillonella in the microbial network of the REHpp group. The main finding of this study is that RE disturbs the human oral microbiota, such as increased beta diversity. Hp infection may inhibit this disorderly trend.
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Affiliation(s)
- Tian Liang
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research on High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, China.,Key Laboratory of High Altitude Environment and Genes Related to Diseases of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, China
| | - Fang Liu
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research on High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, China.,Key Laboratory of High Altitude Environment and Genes Related to Diseases of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, China
| | - Lijun Liu
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research on High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, China.,Key Laboratory of High Altitude Environment and Genes Related to Diseases of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, China
| | - Zhiying Zhang
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research on High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, China.,Key Laboratory of High Altitude Environment and Genes Related to Diseases of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, China
| | - Wenxue Dong
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research on High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, China.,Key Laboratory of High Altitude Environment and Genes Related to Diseases of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, China
| | - Su Bai
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research on High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, China.,Key Laboratory of High Altitude Environment and Genes Related to Diseases of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, China
| | - Lifeng Ma
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research on High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, China.,Key Laboratory of High Altitude Environment and Genes Related to Diseases of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, China
| | - Longli Kang
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research on High Altitude Disease of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, China.,Key Laboratory of High Altitude Environment and Genes Related to Diseases of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, China
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Li Y, Cui J, Liu Y, Chen K, Huang L, Liu Y. Oral, Tongue-Coating Microbiota, and Metabolic Disorders: A Novel Area of Interactive Research. Front Cardiovasc Med 2021; 8:730203. [PMID: 34490384 PMCID: PMC8417575 DOI: 10.3389/fcvm.2021.730203] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 07/21/2021] [Indexed: 12/17/2022] Open
Abstract
Interactions between colonizing microbiota and the host have been fully confirmed, among which the tongue-coating microbiota have a moderate rate of renewal and disease sensitivity and are easily obtained, making them an ideal research subject. Oral microbiota disorders are related to diabetes, obesity, cardiovascular disease, cancer, and other systemic diseases. As an important part of the oral cavity, tongue-coating microbiota can promote gastritis and digestive system tumors, affecting the occurrence and development of multiple chronic diseases. Common risk factors include diet, age, and immune status, among others. Metabolic regulatory mechanisms may be similar between the tongue and gut microbiota. Tongue-coating microbiota can be transferred to the respiratory or digestive tract and create a new balance with local microorganisms, together with the host epithelial cells forming a biological barrier. This barrier is involved in the production and circulation of nitric oxide (NO) and the function of taste receptors, forming the oral-gut-brain axis (similar to the gut-brain axis). At present, the disease model and mechanism of tongue-coating microbiota affecting metabolism have not been widely studied, but they have tremendous potential.
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Affiliation(s)
- Yiwen Li
- National Clinical Research Center for Traditional Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jing Cui
- National Clinical Research Center for Traditional Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yanfei Liu
- The Second Department of Geriatrics, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Keji Chen
- National Clinical Research Center for Traditional Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Luqi Huang
- China Academy of Chinese Medical Sciences, Beijing, China
| | - Yue Liu
- National Clinical Research Center for Traditional Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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White B, Sterrett JD, Grigoryan Z, Lally L, Heinze JD, Alikhan H, Lowry CA, Perez LJ, DeSipio J, Phadtare S. Characterization of gut microbiome and metabolome in Helicobacter pylori patients in an underprivileged community in the United States. World J Gastroenterol 2021; 27:5575-5594. [PMID: 34588753 PMCID: PMC8433610 DOI: 10.3748/wjg.v27.i33.5575] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 07/02/2021] [Accepted: 08/13/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Helicobacter pylori (H. pylori), a bacterium that infects approximately half of the world's population, is associated with various gastrointestinal diseases, including peptic ulcers, non-ulcer dyspepsia, gastric adenocarcinoma, and gastric lymphoma. As the burden of antibiotic resistance increases, the need for new adjunct therapies designed to facilitate H. pylori eradication and reduce negative distal outcomes associated with infection has become more pressing. Characterization of the interactions between H. pylori, the fecal microbiome, and fecal fatty acid metabolism, as well as the mechanisms underlying these interactions, may offer new therapeutic approaches. AIM To characterize the gut microbiome and metabolome in H. pylori patients in a socioeconomically challenged and underprivileged inner-city community. METHODS Stool samples from 19 H. pylori patients and 16 control subjects were analyzed. 16S rRNA gene sequencing was performed on normalized pooled amplicons using the Illumina MiSeq System using a MiSeq reagent kit v2. Alpha and beta diversity analyses were performed in QIIME 2. Non-targeted fatty acid analysis of the samples was carried out using gas chromatography-mass spectrometry, which measures the total content of 30 fatty acids in stool after conversion into their corresponding fatty acid methyl esters. Multi-dimensional scaling (MDS) was performed on Bray-Curtis distance matrices created from both the metabolomics and microbiome datasets and a Procrustes test was performed on the metabolomics and microbiome MDS coordinates. RESULTS Fecal microbiome analysis showed that alpha diversity was lowest in H. pylori patients over 40 years of age compared to control subjects of similar age group. Beta diversity analysis of the samples revealed significant differences in microbial community structure between H. pylori patients and control subjects across all ages. Thirty-eight and six taxa had lower and higher relative abundance in H. pylori patients, respectively. Taxa that were enriched in H. pylori patients included Atopobium, Gemellaceae, Micrococcaceae, Gemellales and Rothia (R. mucilaginosa). Notably, relative abundance of the phylum Verrucomicrobia was decreased in H. pylori patients compared to control subjects. Procrustes analysis showed a significant relationship between the microbiome and metabolome datasets. Stool samples from H. pylori patients showed increases in several fatty acids including the polyunsaturated fatty acids (PUFAs) 22:4n6, 22:5n3, 20:3n6 and 22:2n6, while decreases were noted in other fatty acids including the PUFA 18:3n6. The pattern of changes in fatty acid concentration correlated to the Bacteroidetes:Firmicutes ratio determined by 16S rRNA gene analysis. CONCLUSION This exploratory study demonstrates H. pylori-associated changes to the fecal microbiome and fecal fatty acid metabolism. Such changes may have implications for improving eradication rates and minimizing associated negative distal outcomes.
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Affiliation(s)
- Brian White
- Department of Biomedical Sciences, Cooper Medical School of Rowan University, Camden, NJ 08103, United States
| | - John D Sterrett
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, United States
| | - Zoya Grigoryan
- Department of Internal Medicine, Lenox Hill Hospital, NYC, NY 10075, United States
| | - Lauren Lally
- Department of Internal Medicine, Thomas Jefferson University Hospital, Philadelphia, PA 19107, United States
| | - Jared D Heinze
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, United States
| | - Hyder Alikhan
- Department of Biological Sciences, Rowan University, Glassboro, NJ 08028, United States
| | - Christopher A Lowry
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, United States
| | - Lark J Perez
- Department of Chemistry and Biochemistry, Rowan University, Glassboro, NJ 08028, United States
| | - Joshua DeSipio
- Department of Gastroenterology, Cooper University Hospital, Camden, NJ 08103, United States
| | - Sangita Phadtare
- Department of Biomedical Sciences, Cooper Medical School of Rowan University, Camden, NJ 08103, United States
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Hao Y, Zhang R, Morris R, Cheng F, Zhu Z, Xu Y, Wang Y. Metabolome and microbiome alterations in tongue coating of gastric precancerous lesion patients. Expert Rev Gastroenterol Hepatol 2021; 15:949-963. [PMID: 33252275 DOI: 10.1080/17474124.2021.1850259] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Objective: This paper seeks to provide mechanistic insight into the pathological transition through the analysis of metabolites and microorganisms in the tongue coating of gastric precancerous lesions (GPL) patients.Methods: GC-TOF-MS and UHPLC-QE-MS metabolomics, combined with 16S rRNA microbiome techniques, were performed to explore the changes in metabolites and microorganisms in the tongue coating of GPL patients.Results: When compared with 15 controls, 133 metabolites were found to be differentially expressed in 60 GPL cases, of which could be divided into ten categories. Among them, most of the differentially expressed metabolites identified were lipids or lipid-like molecules. These metabolites were implicated in 6 metabolic pathways including glycine, serine and threonine metabolism, arginine and proline metabolism, sphingolipid metabolism, valine, leucine and isoleucine degradation, arachidonic acid metabolism, and tyrosine metabolism. The relative abundances of Alloprevotella, Solobacterium, Rothia, Eikenella, and Aggregatibacter in the GPL group increased significantly relative to the controls and were associated with lipids and lipid-like molecules, organic nitrogen compounds, organic oxygen compounds, phenylpropanoids and polyketides, and organoheterocyclic compounds, respectively.Conclusions: Compared with healthy people, the changes of tongue coating metabolites in GPL patients were mainly characterized by alterations in lipid metabolism and were associated with localized changes in the microbiome.
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Affiliation(s)
- Yiming Hao
- Shanghai Key Laboratory of Health Identification and Assessment/Laboratory of TCM Four Diagnostic Information, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Renling Zhang
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Robert Morris
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA
| | - Feng Cheng
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA
| | - Zhujing Zhu
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yifeng Xu
- Shanghai Key Laboratory of Health Identification and Assessment/Laboratory of TCM Four Diagnostic Information, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yiqin Wang
- Shanghai Key Laboratory of Health Identification and Assessment/Laboratory of TCM Four Diagnostic Information, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Casu C, Mosaico G, Natoli V, Scarano A, Lorusso F, Inchingolo F. Microbiota of the Tongue and Systemic Connections: The Examination of the Tongue as an Integrated Approach in Oral Medicine. HYGIENE 2021; 1:56-68. [DOI: 10.3390/hygiene1020006] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2025]
Abstract
The tongue is able to quickly reflect the state of health or disease of the human body. Tongue inspection is an important diagnostic approach. It is a unique method that allows to explore the pathogenesis of diseases based on the guiding principles of the holistic concept that involves the observation of changes in the lining of the tongue in order to understand the physiological functions and pathological changes of the body. It is a potential method of screening and early detection of cancer. However, the subjective inspection of the tongue has a low reliability index, and therefore computerized systems of acquisition of diagnostic bioinformation have been developed to analyze the lining of the tongue. Next-generation sequencing technology is used to determine the V2–V4 hypervariable regions of 16S rRNA to study the microbiota. A lot of neoplasms are identified only at an advanced phase, while in the early stages, many subjects remain in an asymptomatic form. On the contrary, the early diagnosis is able to increase the prognosis of cancer and improve the survival rates of subjects. Evidently, it is necessary to develop new strategies in oral medicine for the early diagnosis of diseases, and the diagnosis of the tongue as a minimally invasive method is certainly one of them.
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Affiliation(s)
- Cinzia Casu
- Department of Surgical Sciences, Oral Biotechnology Laboratory (OBL), University of Cagliari, 09126 Cagliari, Italy
| | | | - Valentino Natoli
- DDS, Private Dental Practice, 72015 Fasano, Italy
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy
| | - Antonio Scarano
- Department of Innovative Technologies in Medicine and Dentistry, University of Chieti-Pescara, 66100 Chieti, Italy
| | - Felice Lorusso
- Department of Innovative Technologies in Medicine and Dentistry, University of Chieti-Pescara, 66100 Chieti, Italy
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Moghadam MT, Chegini Z, Norouzi A, Dousari AS, Shariati A. Three-Decade Failure to the Eradication of Refractory Helicobacter pylori Infection and Recent Efforts to Eradicate the Infection. Curr Pharm Biotechnol 2021; 22:945-959. [PMID: 32767919 DOI: 10.2174/1389201021666200807110849] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 06/30/2020] [Accepted: 07/04/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Helicobacter pylori causes dangerous and deadly diseases such as gastric cancer and duodenal ulcers. Eradication and treatment of this bacterium are very important due to the deadly diseases caused by H. pylori and the high cost of treatment for countries. METHODS Thus, we present a complete list of the most important causes of failure in the treatment and eradication of H. pylori, and address new therapeutic methods that may be effective in controlling this bacterium in the future. RESULTS Many efforts have been made to control and eradicate this bacterium over the years, but no success has been achieved since its eradication is a complex process affected by the bacterial properties and host factors. Previous studies have shown that various factors are involved in the failure to eradicate H. pylori, such as new genotypes of the bacterium with higher pathogenicity, inappropriate patient cooperation, mutations, biofilm formation and dormant forms that cause antibiotic resistance, acidic stomach pH, high bacterial load, smoking, immunosuppressive features and intracellular occurrence of H. pylori. On the other hand, recent studies reported that the use of probiotics, nanoparticles, antimicrobial peptides, natural product and vaccines can be helpful in the treatment and eradication of H. pylori infections. CONCLUSION Eradication of H. pylori is crucial for the treatment of important diseases such as gastric cancer. Therefore, it seems that identifying the failure causes of treating this bacterium can be helpful in controlling the infections. Besides, further studies on new therapeutic strategies may help eradicate H. pylori in the future.
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Affiliation(s)
- Majid T Moghadam
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Zahra Chegini
- Student Research Committee, Iran University of Medical Sciences, Tehran, Iran
| | - Amin Norouzi
- Department of Microbiology and Virology, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | | | - Aref Shariati
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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50
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Gantuya B, Serag HBE, Saruuljavkhlan B, Azzaya D, Matsumoto T, Uchida T, Oyuntsetseg K, Oyunbileg N, Davaadorj D, Yamaoka Y. Advantage of 16S rRNA amplicon sequencing in Helicobacter pylori diagnosis. Helicobacter 2021; 26:e12790. [PMID: 33596345 PMCID: PMC8122063 DOI: 10.1111/hel.12790] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 01/26/2021] [Accepted: 01/26/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND 16S rRNA amplicon sequencing is an accurate method of detecting microbial infection without culture. It is unclear if sequencing has additional benefits over routine diagnostic methods for Helicobacter pylori testing. METHODS We enrolled Mongolian volunteers with dyspepsia. Using routine diagnostic methods, positive H. pylori was defined as positive results on histology/immunohistochemistry, culture, rapid urease test, or serology; negative H. pylori was defined by negative results from all these tests. We performed 16S rRNA sequencing on gastric biopsy specimens and calculated cutoffs for operational taxonomic units (OTUs) and relative abundance (RA) to define positive results using ROC curves. RESULTS We examined 161 individuals with a mean age of 43.6 years, and 64.6% were women. Using routine diagnostic methods, 122 (75.8%) participants were H. pylori positive, the sensitivity and specificity for 16S rRNA sequencing were 94.3% and 82.1% or 93.4% and 82.1% when cutoff values were set to 1113 (OTU number) or 4.4% RA, respectively (both p < .001). When combining the validated values, the concordance rate was high (91.1%); however, 16S rRNA sequencing had additional positive yield in 9 cases (5.6%) compared with routine diagnostic methods, and much greater additional positive yield compared to histopathology/IHC, culture, RUT, serology separately with 12 (7.4%), 37 (23.0%) and 43 (26.7%). CONCLUSION 16S rRNA amplicon sequencing detects potentially important proportion of H. pylori-positive cases that test negative with routine diagnostic methods. The quantitative number of H. pylori can help to understand how it can be changing by diseases and RA give opportunity to understand how H. pylori communicate with other microbiota.
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Affiliation(s)
- Boldbaatar Gantuya
- Department of Gastroenterology, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia,Endoscopy Unit, Mongolia—Japan teaching hospital, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
| | - Hashem B. El Serag
- Department of Medicine, Gastroenterology and Hepatology Section, Baylor College of Medicine, Houston, Texas 77030, USA
| | | | - Dashdorj Azzaya
- Department of Environmental and Preventive Medicine, Oita University of Medicine, Yufu, Japan
| | - Takashi Matsumoto
- Department of Environmental and Preventive Medicine, Oita University of Medicine, Yufu, Japan
| | - Tomohisa Uchida
- Department of Molecular Pathology, Oita University of Medicine, Yufu, Japan
| | - Khasag Oyuntsetseg
- Department of Gastroenterology, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia,Endoscopy Unit, Mongolia—Japan teaching hospital, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
| | - Nyamdorj Oyunbileg
- Department of Gastroenterology, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
| | - Duger Davaadorj
- Department of Gastroenterology, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia,Endoscopy Unit, Mongolia—Japan teaching hospital, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
| | - Yoshio Yamaoka
- Department of Medicine, Gastroenterology and Hepatology Section, Baylor College of Medicine, Houston, Texas 77030, USA,Department of Environmental and Preventive Medicine, Oita University of Medicine, Yufu, Japan
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