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Lewis D, Jimenez L, Mansour MH, Horton S, Wong WWL. A Systematic Review of Cost-Effectiveness Studies on Gastric Cancer Screening. Cancers (Basel) 2024; 16:2353. [PMID: 39001415 PMCID: PMC11240801 DOI: 10.3390/cancers16132353] [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: 05/17/2024] [Revised: 06/14/2024] [Accepted: 06/21/2024] [Indexed: 07/16/2024] Open
Abstract
Gastric cancer (GC) poses notable economic and health burdens in settings where the incidence of disease is prevalent. Some countries have established early screening and treatment programs to address these challenges. The objectives of this systematic review were to summarize the cost-effectiveness of gastric cancer screening presented in the literature and to identify the critical factors that influence the cost-effectiveness of screening. This systematic review followed the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. Economic evaluation studies of gastric cancer screening were reviewed from SCOPUS and PubMed. The Consolidated Health Economic Evaluation Reporting Standards 2022 (CHEERS 2022) was used to assess the quality of reporting presented in the selected articles. Only primary economic evaluation studies addressing the cost-effectiveness, cost-utility, and cost-benefit of gastric cancer screening were selected. Two reviewers scrutinized the selected articles (title, abstract, and full text) to determine suitability for the systematic review based on inclusion and exclusion criteria. Authors' consensus was relied on where disagreements arose. The main outcome measures of concern in the systematic review were cost, effectiveness (as measured by either quality-adjusted life years (QALY) or life-years saved (LYS)), and incremental cost-effectiveness ratio (ICER) of screening versus either no screening or an alternative screening method. Thirty-one studies were selected for the final review. These studies investigated the cost-effectiveness of GC screening based on either primary, secondary, or a combination of primary and secondary interventions. The main primary intervention was Helicobacter pylori (Hp) screening with eradication, while the main secondary intervention was endoscopic screening. Cost-effectiveness was evaluated against no screening or screening using an alternative method in both observational and model-based studies. Screening was mainly cost-effective in Asian countries or their diasporas where the prevalence of GC was high. GC screening was generally not cost-effective among Western countries. GC screening can be cost-effective, but cost-effectiveness is dependent on context-specific factors, including geographical location, the prevalence of GC in the local population, and the screening tool adopted. However, there is benefit in targeting high-risk population groups in Asian countries and their diaspora for GC screening.
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Affiliation(s)
- Diedron Lewis
- School of Pharmacy, University of Waterloo, Waterloo, ON N2G 1C5, Canada
| | - Laura Jimenez
- Department of Community Health and Epidemiology, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Manel Haj Mansour
- Department of Haematology and Oncology, Aga Khan University Hospital, Nairobi P.O. Box 30270-00100, Kenya
| | - Susan Horton
- School of Public Health Sciences, University of Waterloo, Waterloo, ON N2L 3G5, Canada
| | - William W L Wong
- School of Pharmacy, University of Waterloo, Waterloo, ON N2G 1C5, Canada
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Sharma R. Burden of Stomach Cancer Incidence, Mortality, Disability-Adjusted Life Years, and Risk Factors in 204 Countries, 1990-2019: An Examination of Global Burden of Disease 2019. J Gastrointest Cancer 2024; 55:787-799. [PMID: 38265570 DOI: 10.1007/s12029-023-01005-3] [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] [Accepted: 12/20/2023] [Indexed: 01/25/2024]
Abstract
BACKGROUND Stomach cancer is a global health problem and is one of the leading causes of cancer deaths worldwide. This study investigates the spatial and temporal patterns of stomach cancer burden in 204 countries in the last three decades. DATA AND METHODS The estimates of stomach cancer burden and its risk factors were obtained from the Global Burden of Disease (GBD) 2019 study, covering the years 1990 to 2019, across 204 countries within 21 world regions. GBD employs the cause-of-death ensemble modeling framework to calculate disease-specific mortality estimates. Estimated average percent change (EAPC) of absolute counts (incidence, mortality, and disability-adjusted life years (DALYs)) and age-standardized rates (age-standardized incidence rate (ASIR), age-standardized mortality rate (ASMR), and age-standardized DALYs rate (ASDALR)) was calculated in the regions to illustrate the relative changes between 1990 and 2019. Joinpoint regression was used to analyze global trends of stomach cancer burden in the last three decades. RESULTS Incidence of stomach cancer globally increased from 883,396 cases in 1990 to 1.3 million cases in 2019 and number of deaths due to stomach cancer rose from 788,317 in 1990 to 957,185 in 2019. Between 1990 and 2019, the global ASIR decreased from 22.4 per 100,000 to 15.6 per 100,000, the ASMR decreased from 20.5 per 100,000 to 11.9 per 100,000 and the ASDALR declined from 493.4 per 100,000 to 290.6 per 100,000. Trend analysis using joinpoint regression revealed the slowest rise in incident cases and largest decline in ASIR between 2004 and 2016. In 2019, East Asia had the highest number of incident cases, totaling 626,489, followed by high-income Asia-Pacific (128,168) and South Asia (99,399). The ASIR was the highest in East Asia (30.2/100,000) followed by high-income Asia-Pacific (28.2/100,000) and Andean Latin America (22.4/100,000), while high-income North America had the lowest ASIR at 6.1/100,000. In terms of absolute counts, the top three countries in 2019 were China, India, and Japan together accounting for 61.5% of global incident cases, 58.6% of deaths, and DALYs. Mongolia had the highest ASIR (43.7 per 100,000), followed by Bolivia (34.0 per 100,000) and China (30.6 per 100,000) in 2019, while the lowest ASIR was 3.3 per 100,000 in Malawi. Globally, for both sexes combined, 7.8% of stomach cancer DALYs were associated with a diet high in sodium and 17.2% were linked to smoking. Among males, 24.0% of stomach cancer DALYs were attributable to smoking, compared to only 4.3% in females in 2019. CONCLUSION Significant progress has been made globally in the fight against stomach cancer, with the ASIR decreasing by 30.3% and the ASMR by 41.2% between 1990 and 2019. To further reduce the burden of stomach cancer, it is essential to address factors such as Helicobacter pylori prevalence, obesity, and smoking. Additionally, improvements in early detection, socioeconomic development (including better public sanitation, hygiene, and drinking water), and dietary habits are imperative.
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Affiliation(s)
- Rajesh Sharma
- Humanities and Social Sciences, National Institute of Technology Kurukshetra, Kurukshetra, Haryana, India.
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Kayamba V, Munshi H, Hankolwe MN, Kaluba Kavimba C, Chongwe G, Knaze V, Park JY, Kelly P. Nationwide survey of Helicobacter pylori seropositivity and gastric atrophy in Zambia. Helicobacter 2024; 29:e13096. [PMID: 38790093 DOI: 10.1111/hel.13096] [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] [Received: 03/01/2024] [Revised: 05/09/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024]
Abstract
BACKGROUND Helicobacter pylori (H. pylori) is a common bacterial infection which predominately drives upper gastrointestinal pathology. We carried out a nationwide serological survey in response to the deficiency of robust African data on H. pylori prevalence, age of acquisition, socio-geographic determinants, and impact on gastric physiology. MATERIALS AND METHODS This was a cross-sectional study of archival plasma samples collected during the Zambia Population-based HIV impact Assessment (ZAMPHIA) 2016 survey. ZAMPHIA used a two-stage door-to-door stratified cluster sample approach to collect samples from adults and children from age 0 to 59 years (n = 24,266). We randomly retrieved one fifth of these samples from each of Zambia's 10 provinces and used ELISA to test for H. pylori IgG antibodies, pepsinogen 1 and 2 and gastrin-17. A pepsinogen 1:2 ratio of <3 was used to define gastric atrophy. RESULTS The analysis of 4050 plasma samples (30% <16 years, 53% females) revealed an overall H. pylori seroprevalence of 79%. By the age of 10 years, more than 75% of the children had H. pylori. Urban residence was associated with increased odds (OR 1.8, 95% CI 1.5-2.2, p < 0.001) and HIV infection was associated with reduced odds (OR 0.7, 95% CI 0.5-0.9, p = 0.02) of H. pylori seropositivity. Gastric atrophy was detected in 6% of H. pylori seropositive adults below 45 years of age and 9% in those between 45 and 59 years. CONCLUSIONS We have confirmed a high prevalence of H. pylori seropositivity in Zambia, predominantly in urban settings. The prevalence of gastric atrophy is broadly consistent with other populations around the globe, but our sample did not include adults over 60 years.
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Affiliation(s)
- Violet Kayamba
- Tropical Gastroenterology and Nutrition Group, Lusaka, Zambia
- University of Zambia School of Medicine, Lusaka, Zambia
| | - Husna Munshi
- Tropical Gastroenterology and Nutrition Group, Lusaka, Zambia
| | | | | | | | - Viktoria Knaze
- Early Detection, Prevention, and Infections Branch, International Agency for Research on Cancer (IARC/WHO), Lyon, France
| | - Jin Young Park
- Early Detection, Prevention, and Infections Branch, International Agency for Research on Cancer (IARC/WHO), Lyon, France
| | - Paul Kelly
- Tropical Gastroenterology and Nutrition Group, Lusaka, Zambia
- University of Zambia School of Medicine, Lusaka, Zambia
- Blizard Institute, Barts & The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
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Shirani M, Pakzad R, Haddadi MH, Akrami S, Asadi A, Kazemian H, Moradi M, Kaviar VH, Zomorodi AR, Khoshnood S, Shafieian M, Tavasolian R, Heidary M, Saki M. The global prevalence of gastric cancer in Helicobacter pylori-infected individuals: a systematic review and meta-analysis. BMC Infect Dis 2023; 23:543. [PMID: 37598157 PMCID: PMC10439572 DOI: 10.1186/s12879-023-08504-5] [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: 11/30/2022] [Accepted: 07/31/2023] [Indexed: 08/21/2023] Open
Abstract
BACKGROUND Helicobacter pylori is a gastrointestinal pathogen that infects around half of the world's population. H. pylori infection is the most severe known risk factor for gastric cancer (GC), which is the second highest cause of cancer-related deaths globally. We conducted a systematic review and meta-analysis to assess the global prevalence of GC in H. pylori-infected individuals. METHODS We performed a systematic search of the PubMed, Web of Science, and Embase databases for studies of the prevalence of GC in H. pylori-infected individuals published from 1 January 2011 to 20 April 2021. Metaprop package were used to calculate the pooled prevalence with 95% confidence interval. Random-effects model was applied to estimate the pooled prevalence. We also quantified it with the I2 index. Based on the Higgins classification approach, I2 values above 0.7 were determined as high heterogeneity. RESULTS Among 17,438 reports screened, we assessed 1053 full-text articles for eligibility; 149 were included in the final analysis, comprising data from 32 countries. The highest and lowest prevalence was observed in America (pooled prevalence: 18.06%; 95% CI: 16.48 - 19.63; I2: 98.84%) and Africa (pooled prevalence: 9.52%; 95% CI: 5.92 - 13.12; I2: 88.39%). Among individual countries, Japan had the highest pooled prevalence of GC in H. pylori positive patients (Prevalence: 90.90%:95% CI: 83.61-95.14), whereas Sweden had the lowest prevalence (Prevalence: 0.07%; 95% CI: 0.06-0.09). The highest and lowest prevalence was observed in prospective case series (pooled prevalence: 23.13%; 95% CI: 20.41 - 25.85; I2: 97.70%) and retrospective cohort (pooled prevalence: 1.17%; 95% CI: 0.55 - 1.78; I 2: 0.10%). CONCLUSIONS H. pylori infection in GC patients varied between regions in this systematic review and meta-analysis. We observed that large amounts of GCs in developed countries are associated with H. pylori. Using these data, regional initiatives can be taken to prevent and eradicate H. pylori worldwide, thus reducing its complications.
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Affiliation(s)
- Maryam Shirani
- Toxicology Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Reza Pakzad
- Department of Epidemiology, Faculty of Health, Ilam University Medical Sciences, Ilam, Iran
- Student Research Committee, Ilam University of Medical Sciences, Ilam, Iran
| | | | - Sousan Akrami
- Students' Scientific Research Center (SSRC), Tehran University of Medical Sciences, Tehran, Iran
- Department of Microbiology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Arezoo Asadi
- Endocrine Research Center, Institute of Endocrinology and Metabolism, Iran University of Medical Sciences, Tehran, Iran
| | - Hossein Kazemian
- Clinical Microbiology Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Melika Moradi
- Department of Microbiology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Vahab Hassan Kaviar
- Department of Medical Microbiology, Faculty of Medicine, Ilam University of Medical Science, Ilam, Iran
| | - Abolfazl Rafati Zomorodi
- Department of Bacteriology and Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Saeed Khoshnood
- Student Research Committee, Ilam University of Medical Sciences, Ilam, Iran
- Clinical Microbiology Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Mahnaz Shafieian
- Department of Midwifery, Faculty of Nursing and Midwifery, Ilam University of Medical Sciences, Ilam, Iran
| | - Ronia Tavasolian
- Department of Medicine, Faculty of Nutrition Science, University of Cheste, Chester, UK
| | - Mohsen Heidary
- Department of Laboratory Sciences, School of Paramedical Sciences, Sabzevar University of Medical Sciences, Sabzevar, Iran.
- Cellular and Molecular Research Center, Sabzevar University of Medical Sciences, Sabzevar, Iran.
| | - Morteza Saki
- Department of Microbiology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
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Osinowo AO, Olajide TO, Balogun OS, Makanjuola A, Adesanya AA, Atoyebi OA. Clinicopathological Features and Treatment Outcome of Patients with Gastric Cancer in Lagos: Is the Outlook Getting Better? JOURNAL OF THE WEST AFRICAN COLLEGE OF SURGEONS 2023; 13:67-73. [PMID: 36923819 PMCID: PMC10010595 DOI: 10.4103/jwas.jwas_219_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 10/28/2022] [Indexed: 03/18/2023]
Abstract
Background Gastric cancer (GC) is an important cause of morbidity and mortality in Nigeria. Significant advances in the management of GC in South-West Nigeria occurred in the last three decades. Patients and Methods This was a retrospective comparative study of patients with GC that presented at our tertiary hospital in the last three decades. Information on clinicopathological features and treatment outcome were analysed. Data of two consecutive periods; 1991-2004 (Group I) and 2005-2018 (Group II) were compared. Results Ninety-one patients were studied; Group I (47 patients), Group II (44 patients). The mean age was 56.4 ± 12.7 years and male-to-female ratio was 1.8 to 1.0. The predominant symptoms were epigastric pain in 81(89.0%) (43 vs. 38) and weight loss in 63(69.2%) (32 vs. 31), whereas the signs were epigastric tenderness in 44(46.1%) (24 vs. 20) and epigastric mass in 42(46.1%) (26 vs. 16). The overall mean duration of symptom was 12.3 ± 16.9 months. Barium meal diagnosed GC in 29(61.7%) patients in Group I vs. 4(9.1%) patients in Group II. Conversely, endoscopy diagnosed GC in 23(48.9%) patients in Group I vs. 37(84.1%) patients in Group II. Operations undertaken included palliative subtotal gastrectomy 26(28.6%), potentially curative subtotal gastrectomy 15(16.5%) and non-resectional surgeries in 27(29.7%) patients. The overall incidence of major post-operative complications was 33%. Thirty-nine (42.8%) of the studied patients were lost to follow up. The median postoperative survival for Groups I and II patients was 22 weeks and 58 weeks, P = 0.012, respectively. Conclusion The outcome of management of patients with GC at our tertiary hospital has improved modestly in the past three decades. Patients are still presenting late with very advanced disease.
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Affiliation(s)
- Adedapo Olumide Osinowo
- Department of Surgery, General Surgery Unit, College of Medicine, University of Lagos and Lagos University Teaching Hospital, Idi-Araba, Lagos, Nigeria
| | - Thomas Olagboyega Olajide
- Department of Surgery, College of Medicine, University of Lagos and Lagos University Teaching Hospital, Idi-Araba, Lagos, Nigeria
| | - Olanrewaju Samuel Balogun
- Department of Surgery, College of Medicine, University of Lagos and Lagos University Teaching Hospital, Idi-Araba, Lagos, Nigeria
| | - Ayomide Makanjuola
- Department of Surgery, Lagos University Teaching Hospital, Idi-Araba, Lagos, Nigeria
| | - Adedoyin Adekunle Adesanya
- Department of Surgery, General Surgery Unit, College of Medicine, University of Lagos and Lagos University Teaching Hospital, Idi-Araba, Lagos, Nigeria
| | - Oluwole A. Atoyebi
- Department of Surgery, General Surgery Unit, College of Medicine, University of Lagos and Lagos University Teaching Hospital, Idi-Araba, Lagos, Nigeria
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Setshedi M, Watermeyer G. The impact of Helicobacter pylori and intestinal helminth infections on gastric adenocarcinoma and inflammatory bowel disease in Sub-Saharan Africa. Front Med (Lausanne) 2022; 9:1013779. [PMID: 36569142 PMCID: PMC9780450 DOI: 10.3389/fmed.2022.1013779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 11/28/2022] [Indexed: 12/13/2022] Open
Abstract
Gastric adenocarcinoma (GCA) is the 5th leading cancer globally with an estimated 1.1 million cases reported in 2020. Ninety percent of non-cardia GCAs are attributable to Helicobacter pylori (H. pylori), the most prevalent bacterial infection globally. Rates of H. pylori infection are highest in Sub-Saharan Africa (SSA), yet surprisingly low numbers of GCAs are reported in the region. A similar phenomenon is seen with the inflammatory bowel diseases (IBD), Crohn's disease, and ulcerative colitis. These disorders have risen dramatically over the past century in high income countries across the globe, with sharp increases noted more recently in newly industrialized regions. In contrast IBD is rare in most regions in SSA. For both diseases this may reflect under-reporting or limited access to diagnostic modalities, but an alternative explanation is the high burden of infection with gastrointestinal parasites endemic to SSA which may attenuate the risk of developing GCA and IBD. In this mini review we discuss the complex interplay between these microorganisms, GCA, and IBD, as well as a possible protective role of H. pylori and the development of IBD.
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Kumari P, Machhan P, Sharma B, Sharma R, Bodh V, Kumar R. Dyspepsia with alarm symptoms in patients aged less than 60 years: Is upper gastrointestinal endoscopy justified in Indian scenario? Indian J Gastroenterol 2022; 41:430-439. [PMID: 36308702 DOI: 10.1007/s12664-022-01275-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 06/26/2022] [Indexed: 02/04/2023]
Abstract
BACKGROUND Newer American College of Gastroenterology (ACG) and Canadian Association of Gastroenterology (CAG) guidelines do not suggest endoscopy to investigate alarm features for dyspepsia patients under the age of 60 to exclude upper gastrointestinal (GI) neoplasia. The validity of this recommendation has not been evaluated in our population. So, this study was conducted to assess the utility of upper GI endoscopy to investigate alarm features in dyspepsia patients less than 60 years of age to exclude upper GI neoplasia. METHODS This prospective observational study evaluated consecutive patients of dyspepsia between 18 and 60 years of age, with at least one or more of the alarm symptoms (unintentional weight loss; loss of appetite; GI bleeding; anemia; recurrent or persistent vomiting; dysphagia with predominant epigastric pain; and family history of upper GI cancer) with upper GI endoscopy to exclude any organic lesion and malignancy. RESULTS Of total 294 patients evaluated with endoscopy, 34.7% (n=102) had normal endoscopy (functional dyspepsia [FD]) while 65.3% (n=192) had abnormal endoscopic findings (organic dyspepsia [OD]). Of 192 patients with OD, 146 patients (49.6% of the total study population) had benign abnormality (benign OD) while 46 patients (15.6% of the total study population) had malignancy of the upper GI tract (malignant OD). CONCLUSION The investigation of alarm features in dyspepsia patients less than 60 years of age with upper GI endoscopy leads to detection of organic lesion (65.3%) including malignancy (15.6%) in a significant percentage of patients.
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Affiliation(s)
- Priya Kumari
- Department of Medicine, Indira Gandhi Medical College and Hospital, Shimla, 171 001, India
| | - Prem Machhan
- Department of Medicine, Indira Gandhi Medical College and Hospital, Shimla, 171 001, India
| | - Brij Sharma
- Department of Gastroenterology, Indira Gandhi Medical College and Hospital, Shimla, 171 001, India
| | - Rajesh Sharma
- Department of Gastroenterology, Indira Gandhi Medical College and Hospital, Shimla, 171 001, India
| | - Vishal Bodh
- Department of Gastroenterology, Indira Gandhi Medical College and Hospital, Shimla, 171 001, India.
| | - Rajesh Kumar
- Department of Gastroenterology, Indira Gandhi Medical College and Hospital, Shimla, 171 001, India
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Ray AK, Luis PB, Mishra SK, Barry DP, Asim M, Pandey A, Chaturvedi M, Gupta J, Gupta S, Mahant S, Das R, Kumar P, Shalimar, Wilson KT, Schneider C, Chaturvedi R. Curcumin Oxidation Is Required for Inhibition of Helicobacter pylori Growth, Translocation and Phosphorylation of Cag A. Front Cell Infect Microbiol 2021; 11:765842. [PMID: 35004346 PMCID: PMC8740292 DOI: 10.3389/fcimb.2021.765842] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 12/02/2021] [Indexed: 01/22/2023] Open
Abstract
Curcumin is a potential natural remedy for preventing Helicobacter pylori-associated gastric inflammation and cancer. Here, we analyzed the effect of a phospholipid formulation of curcumin on H. pylori growth, translocation and phosphorylation of the virulence factor CagA and host protein kinase Src in vitro and in an in vivo mouse model of H. pylori infection. Growth of H. pylori was inhibited dose-dependently by curcumin in vitro. H. pylori was unable to metabolically reduce curcumin, whereas two enterobacteria, E. coli and Citrobacter rodentium, which efficiently reduced curcumin to the tetra- and hexahydro metabolites, evaded growth inhibition. Oxidative metabolism of curcumin was required for the growth inhibition of H. pylori and the translocation and phosphorylation of CagA and cSrc, since acetal- and diacetal-curcumin that do not undergo oxidative transformation were ineffective. Curcumin attenuated mRNA expression of the H. pylori virulence genes cagE and cagF in a dose-dependent manner and inhibited translocation and phosphorylation of CagA in gastric epithelial cells. H. pylori strains isolated from dietary curcumin-treated mice showed attenuated ability to induce cSrc phosphorylation and the mRNA expression of the gene encoding for IL-8, suggesting long-lasting effects of curcumin on the virulence of H. pylori. Our work provides mechanistic evidence that encourages testing of curcumin as a dietary approach to inhibit the virulence of CagA.
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Affiliation(s)
- Ashwini Kumar Ray
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
- Department of Microbiology, Saheed Rajguru College of Applied Sciences for Women, University of Delhi, New Delhi, India
- Department of Environmental Studies, University of Delhi, New Delhi, India
| | - Paula B. Luis
- Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University School of Medicine, Nashville, TN, United States
| | | | - Daniel P. Barry
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Mohammad Asim
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Achyut Pandey
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Maya Chaturvedi
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Jyoti Gupta
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Shilpi Gupta
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Shweta Mahant
- Centre for Medical Biotechnology, Amity Institute of Biotechnology, Amity University, Noida, India
| | - Rajashree Das
- Centre for Medical Biotechnology, Amity Institute of Biotechnology, Amity University, Noida, India
| | - Pramod Kumar
- Department of Chemistry, Sri Aurobindo College, University of Delhi, New Delhi, India
| | - Shalimar
- Department of Gastroenterology and Human Nutrition Unit, All India Institute of Medical Sciences, New Delhi, India
| | - Keith T. Wilson
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, United States
- Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, United States
| | - Claus Schneider
- Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Rupesh Chaturvedi
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
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Advances in the Aetiology & Endoscopic Detection and Management of Early Gastric Cancer. Cancers (Basel) 2021; 13:cancers13246242. [PMID: 34944861 PMCID: PMC8699285 DOI: 10.3390/cancers13246242] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/06/2021] [Accepted: 12/10/2021] [Indexed: 12/24/2022] Open
Abstract
Simple Summary Gastric adenocarcinoma has remained a highly lethal disease. Awareness and recognition of preneoplastic conditions (including gastric atrophy and intestinal metaplasia) using high-resolution white-light endoscopy as well as chromoendoscopy is therefore essential. Helicobacter pylori, a class I carcinogen, remains the main contributor to the development of sporadic distal gastric neoplasia. Management of early gastric neoplasia with endoscopic resections should be in line with standard indications. A multidisciplinary approach to any case of an early gastric neoplasia is imperative. Hereditary forms of gastric cancer require a tailored approach and individua-lized surveillance. Abstract The mortality rates of gastric carcinoma remain high, despite the progress in research and development in disease mechanisms and treatment. Therefore, recognition of gastric precancerous lesions and early neoplasia is crucial. Two subtypes of sporadic gastric cancer have been recognized: cardia subtype and non-cardia (distal) subtype, the latter being more frequent and largely associated with infection of Helicobacter pylori, a class I carcinogen. Helicobacter pylori initiates the widely accepted Correa cascade, describing a stepwise progression through precursor lesions from chronic inflammation to gastric atrophy, gastric intestinal metaplasia and neoplasia. Our knowledge on He-licobacter pylori is still limited, and multiple questions in the context of its contribution to the pathogenesis of gastric neoplasia are yet to be answered. Awareness and recognition of gastric atrophy and intestinal metaplasia on high-definition white-light endoscopy, image-enhanced endoscopy and magnification endoscopy, in combination with histology from the biopsies taken accurately according to the protocol, are crucial to guiding the management. Standard indications for endoscopic resections (endoscopic mucosal resection and endoscopic submucosal dissection) of gastric dysplasia and intestinal type of gastric carcinoma have been recommended by multiple societies. Endoscopic evaluation and surveillance should be offered to individuals with an inherited predisposition to gastric carcinoma.
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Helicobacter pylori-Induced Inflammation: Possible Factors Modulating the Risk of Gastric Cancer. Pathogens 2021; 10:pathogens10091099. [PMID: 34578132 PMCID: PMC8467880 DOI: 10.3390/pathogens10091099] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/21/2021] [Accepted: 08/25/2021] [Indexed: 02/07/2023] Open
Abstract
Chronic inflammation and long-term tissue injury are related to many malignancies, including gastric cancer (GC). Helicobacter pylori (H. pylori), classified as a class I carcinogen, induces chronic superficial gastritis followed by gastric carcinogenesis. Despite a high prevalence of H. pylori infection, only about 1–3% of people infected with this bacterium develop GC worldwide. Furthermore, the development of chronic gastritis in some, but not all, H. pylori-infected subjects remains unexplained. These conflicting findings indicate that clinical outcomes of aggressive inflammation (atrophic gastritis) to gastric carcinogenesis are influenced by several other factors (in addition to H. pylori infection), such as gut microbiota, co-existence of intestinal helminths, dietary habits, and host genetic factors. This review has five goals: (1) to assess our current understanding of the process of H. pylori-triggered inflammation and gastric precursor lesions; (2) to present a hypothesis on risk modulation by the gut microbiota and infestation with intestinal helminths; (3) to identify the dietary behavior of the people at risk of GC; (4) to check the inflammation-related genetic polymorphisms and role of exosomes together with other factors as initiators of precancerous lesions and gastric carcinoma; and (5) finally, to conclude and suggest a new direction for future research.
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Smith SI, Ajayi A, Jolaiya T, Onyekwere C, Setshedi M, Schulz C, Otegbayo JA, Ndip R, Dieye Y, Alboraie M, Ally R, Gunturu R, Hyasinta J, Ugiagbe R, Ndububa D, Arigbabu A. Helicobacter pylori Infection in Africa: Update of the Current Situation and Challenges. Dig Dis 2021; 40:535-544. [PMID: 34380131 DOI: 10.1159/000518959] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 08/09/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND The burden of Helicobacter pylori infection (HPI) in Africa remains high with varying levels of prevalence among children and adults reported in different regions of the continent. Persistent and uneradicated HPI could result in gastric cancer, although less severe pathological outcomes have been reported among Africans - the so-called "African enigma." SUMMARY Analysis of endoscopic findings of the upper gastrointestinal tract demonstrates similarities with that of patients from the West. Thus, it could be asserted that the true picture of HPI in Africa is yet to be unveiled due to several challenges including inadequate health-care system, lack of treatment guidelines and standardized protocol for diagnosis, and lack of data. This review explores the prevalence, diagnosis, treatment, and health-care system in Africa as it relates to HPI, thus providing an update and highlighting the need for an African HPI guideline. KEY MESSAGES There is high prevalence of Helicobacter pylori infection (HPI) in Africa with an increasing burden of antibiotic resistance. Various methods including invasive and noninvasive methods are deployed in the diagnosis of HPI in Africa. There is a need for consensus on diagnosis and treatment of HPI in Africa.
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Affiliation(s)
- Stella Ifeanyi Smith
- Department of Molecular Biology and Biotechnology, Nigerian Institute of Medical Research, Lagos, Nigeria.,Department of Microbiology, Mountain Top University, Ogun, Nigeria
| | - Abraham Ajayi
- Department of Molecular Biology and Biotechnology, Nigerian Institute of Medical Research, Lagos, Nigeria
| | | | - Charles Onyekwere
- Department of Medicine, Lagos State University Teaching Hospital, Ikeja, Nigeria
| | - Mashiko Setshedi
- Division of Gastroenterology, Departments of Medicine, University of Cape Town, Cape Town, South Africa
| | - Christian Schulz
- Department of Medicine 2, LMU Hospital, Ludwig-Maximillians-University, Munich, Germany
| | | | - Roland Ndip
- Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon
| | - Yakhya Dieye
- Department of Microbiology, Institut Pasteur, Dakar, Senegal
| | - Mohamed Alboraie
- Department of Internal Medicine, Al-Azhar University, Cairo, Egypt
| | - Reidwaan Ally
- Department of Gastroenterology, Chris Hani Baragwanath Academic Hospital, Johannesburg, South Africa
| | - Revathi Gunturu
- Department of Pathology, Aga Khan University Hospital Nairobi, Nairobi, Kenya
| | - Jaka Hyasinta
- Department of Internal Medicine, Catholic University of Health and Allied Sciences, Mwanza, Tanzania
| | - Rose Ugiagbe
- Department of Medicine, University of Benin Teaching Hospital, Benin, Nigeria
| | - Dennis Ndububa
- Department of Medicine, Obafemi Awolowo University Teaching Hospitals Complex, Ile-Ife, Nigeria
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Singh SP, Ahuja V, Ghoshal UC, Makharia G, Dutta U, Zargar SA, Venkataraman J, Dutta AK, Mukhopadhyay AK, Singh A, Thapa BR, Vaiphei K, Sathiyasekaran M, Sahu MK, Rout N, Abraham P, Dalai PC, Rathi P, Sinha SK, Bhatia S, Patra S, Ghoshal U, Poddar U, Mouli VP, Kate V. Management of Helicobacter pylori infection: The Bhubaneswar Consensus Report of the Indian Society of Gastroenterology. Indian J Gastroenterol 2021; 40:420-444. [PMID: 34219211 DOI: 10.1007/s12664-021-01186-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 04/20/2021] [Indexed: 02/04/2023]
Abstract
The Indian Society of Gastroenterology (ISG) felt the need to organize a consensus on Helicobacter pylori (H. pylori) infection and to update the current management of H. pylori infection; hence, ISG constituted the ISG's Task Force on Helicobacter pylori. The Task Force on H. pylori undertook an exercise to produce consensus statements on H. pylori infection. Twenty-five experts from different parts of India, including gastroenterologists, pathologists, surgeons, epidemiologists, pediatricians, and microbiologists participated in the meeting. The participants were allocated to one of following sections for the meeting: Epidemiology of H. pylori infection in India and H. pylori associated conditions; diagnosis; treatment and retreatment; H. pylori and gastric cancer, and H. pylori prevention/public health. Each group reviewed all published literature on H. pylori infection with special reference to the Indian scenario and prepared appropriate statements on different aspects for voting and consensus development. This consensus, which was produced through a modified Delphi process including two rounds of face-to-face meetings, reflects our current understanding and recommendations for the diagnosis and management of H. pylori infection. These consensus should serve as a reference for not only guiding treatment of H. pylori infection but also to guide future research on the subject.
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Affiliation(s)
- Shivaram Prasad Singh
- Department of Gastroenterology, Srirama Chandra Bhanja Medical College and Hospital, Cuttack, 753 007, India.
| | - Vineet Ahuja
- Department of Gastroenterology and Human Nutrition, All India Institute of Medical Sciences, New Delhi, 110 029, India
| | - Uday C Ghoshal
- Department of Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Raebareli Road, Lucknow, 226 014, India
| | - Govind Makharia
- Department of Gastroenterology and Human Nutrition, All India Institute of Medical Sciences, New Delhi, 110 029, India
| | - Usha Dutta
- Department of Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160 012, India
| | - Showkat Ali Zargar
- Department of Gastroenterology, Sher-I-Kashmir Institute of Medical Sciences, Soura, Srinagar, 190 011, India
| | - Jayanthi Venkataraman
- Department of Hepatology, Sri Ramachandra Medical Centre, No. 1 Ramachandra Nagar, Porur, Chennai, 600 116, India
| | - Amit Kumar Dutta
- Department of Gastrointestinal Sciences, Christian Medical College and Hospital, Vellore, 632 004, India
| | - Asish K Mukhopadhyay
- Division of Bacteriology, National Institute of Cholera and Enteric Diseases, Kolkata, 700 010, India
| | - Ayaskanta Singh
- Department of Gastroenterology, IMS and Sum Hospital, Bhubaneswar, 756 001, India
| | - Babu Ram Thapa
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Superspeciality of Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160 012, India
| | - Kim Vaiphei
- Department of Histopathology, Postgraduate Institute of Medical Education and Research, Sector 12, Chandigarh, 160 012, India
| | - Malathi Sathiyasekaran
- Department of Pediatric Gastroenterology, Kanchi Kamakoti Childs Trust Hospital, Chennai, 600 034, India
| | - Manoj K Sahu
- Department of Gastroenterology, IMS and Sum Hospital, Bhubaneswar, 756 001, India
| | - Niranjan Rout
- Department of Pathology, Acharya Harihar Post Graduate Institute of Cancer, Manglabag, Cuttack, 753 007, India
| | - Philip Abraham
- P D Hinduja Hospital and Medical Research Centre, Veer Savarkar Marg, Cadel Road, Mahim, Mumbai, 400 016, India
| | - Prakash Chandra Dalai
- Gastro and Kidney Care Hospital, IRC Village, Nayapalli, Bhubaneswar, 751 015, India
| | - Pravin Rathi
- Department of Gastroenterology, Topiwala National Medical College and B Y L Nair Charitable Hospital, Dr Anandrao Laxman Nair Marg, Mumbai, 400 008, India
| | - Saroj K Sinha
- Department of Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160 012, India
| | - Shobna Bhatia
- Department of Gastroenterology and Hepatobiliary Sciences, Sir HN Reliance Foundation Hospital and Research Centre, Raja Rammohan Roy Road, Prarthana Samaj, Girgaon, Mumbai, 400 004, India
| | - Susama Patra
- Department of Pathology, All India Institute of Medical Sciences, Patrapada, Bhubaneswar, 751 019, India
| | - Ujjala Ghoshal
- Department of Microbiology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Raebareli Road, Lucknow, 226 014, India
| | - Ujjal Poddar
- Department of Pediatric Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, 226 014, India
| | | | - Vikram Kate
- Department of Surgery, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, 605 006, India
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Holmes L, Rios J, Berice B, Benson J, Bafford N, Parson K, Halloran D. Predictive Effect of Helicobacter pylori in Gastric Carcinoma Development: Systematic Review and Quantitative Evidence Synthesis. MEDICINES (BASEL, SWITZERLAND) 2021; 8:medicines8010001. [PMID: 33466356 PMCID: PMC7824775 DOI: 10.3390/medicines8010001] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/31/2020] [Accepted: 12/31/2020] [Indexed: 12/11/2022]
Abstract
Helicobacter pylori (H. pylori) is a bacterial pathogen implicated in gastritis, gastric ulceration, and gastric carcinoma. This study aimed to synthesize literature in providing evidence on the causative role of H. pylori in gastric carcinoma development. This study is based on assessing public literature using an applied meta-analysis, namely, quantitative evidence synthesis (QES). The analytic procedure uses DerSimonian-Laird, including assessing heterogeneity. The QES also utilizes meta-regression and the environmental effect associated with H. pylori in gastric cancer development. Eighteen studies are included in the QES. There is increased prevalence of H. pylori exposure among the cases. The heterogeneity between the CES and individual effect sizes is also significant. Despite controlling for the confoundings, there is increased exposure to H. pylori among the gastric cancer cases, regardless of the differences in the geographic location. H. pylori in this synthesized literature illustrates the contributory role of this microbe in gastric carcinoma. Additionally, regardless of geographic locale, namely, South Korea or Spain, H. pylori is implicated in gastric cancer development.
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Affiliation(s)
- Laurens Holmes
- Nemours Healthcare System for Children, Wilmington, DE 19803, USA; (J.R.); (B.B.); (J.B.); (N.B.); (K.P.); (D.H.)
- Department of Biological Sciences, University of Delaware, Newark, DE 19716, USA
- Correspondence: ; Tel.: +1-(302)-298-7741
| | - Jasmine Rios
- Nemours Healthcare System for Children, Wilmington, DE 19803, USA; (J.R.); (B.B.); (J.B.); (N.B.); (K.P.); (D.H.)
- History of Science and Medicine Department, Yale University, New Haven, CT 06511, USA
| | - Betyna Berice
- Nemours Healthcare System for Children, Wilmington, DE 19803, USA; (J.R.); (B.B.); (J.B.); (N.B.); (K.P.); (D.H.)
- Master of Public Health, Dr. Kiran C. Patel College of Osteopathic Medicine, Nova Southeastern University, Davie, FL 33328, USA
| | - Jacqueline Benson
- Nemours Healthcare System for Children, Wilmington, DE 19803, USA; (J.R.); (B.B.); (J.B.); (N.B.); (K.P.); (D.H.)
- Master of Public Health Program, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Nastocia Bafford
- Nemours Healthcare System for Children, Wilmington, DE 19803, USA; (J.R.); (B.B.); (J.B.); (N.B.); (K.P.); (D.H.)
| | - Kadedrah Parson
- Nemours Healthcare System for Children, Wilmington, DE 19803, USA; (J.R.); (B.B.); (J.B.); (N.B.); (K.P.); (D.H.)
| | - Daniel Halloran
- Nemours Healthcare System for Children, Wilmington, DE 19803, USA; (J.R.); (B.B.); (J.B.); (N.B.); (K.P.); (D.H.)
- Department of Biological Sciences, University of Delaware, Newark, DE 19716, USA
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Mwangi C, Njoroge S, Tshibangu-Kabamba E, Moloo Z, Rajula A, Devani S, Matsumoto T, Nyerere K, Kariuki S, Revathi G, Yamaoka Y. Whole Genome Sequencing Reveals Virulence Potentials of Helicobacter pylori Strain KE21 Isolated from a Kenyan Patient with Gastric Signet Ring Cell Carcinoma. Toxins (Basel) 2020; 12:E556. [PMID: 32872465 PMCID: PMC7551074 DOI: 10.3390/toxins12090556] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 08/26/2020] [Accepted: 08/27/2020] [Indexed: 12/24/2022] Open
Abstract
Helicobacter pylori (H.pylori) infection is etiologically associated with severe diseases including gastric cancer; but its pathogenicity is deeply shaped by the exceptional genomic diversification and geographic variation of the species. The clinical relevance of strains colonizing Africa is still debated. This study aimed to explore genomic features and virulence potentials of H. pylori KE21, a typical African strain isolated from a native Kenyan patient diagnosed with a gastric cancer. A high-quality circular genome assembly of 1,648,327 bp (1590 genes) obtained as a hybrid of Illumina Miseq short reads and Oxford Nanopore MinION long reads, clustered within hpAfrica1 population. This genome revealed a virulome and a mobilome encoding more than hundred features potentiating a successful colonization, persistent infection, and enhanced disease pathogenesis. Furthermore, through an experimental infection of gastric epithelial cell lines, strain KE21 showed the ability to promote interleukin-8 production and to induce cellular alterations resulting from the injection of a functional CagA oncogene protein into the cells. This study shows that strain KE21 is potentially virulent and can trigger oncogenic pathways in gastric epithelial cells. Expended genomic and clinical explorations are required to evaluate the epidemiological importance of H. pylori infection and its putative complications in the study population.
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Affiliation(s)
- Catherine Mwangi
- Department of Medical Microbiology, Jomo Kenyatta University of Agriculture and Technology, Nairobi P.O. Box 62000-00200, Kenya; (C.M.); (S.N.); (K.N.)
- Department of Medical Microbiology and Parasitology, Kenyatta University, Nairobi P.O. Box 43844-00100, Kenya
| | - Stephen Njoroge
- Department of Medical Microbiology, Jomo Kenyatta University of Agriculture and Technology, Nairobi P.O. Box 62000-00200, Kenya; (C.M.); (S.N.); (K.N.)
- Department of Medical Microbiology, Technical University of Kenya, Nairobi P.O. Box 52428, Kenya
| | - Evariste Tshibangu-Kabamba
- Department of Environmental and Preventive Medicine, Faculty of Medicine, Oita University, Oita 879-5593, Japan; (E.T.-K.); (T.M.)
| | - Zahir Moloo
- Department of Pathology and Laboratory Medicine, Aga Khan Hospital University, Nairobi P.O. Box 37002-00100, Kenya; (Z.M.); (G.R.)
| | - Allan Rajula
- Gastroenterology section, Aga Khan Hospital University, Nairobi P.O. Box 37002-00100, Kenya; (A.R.); (S.D.)
| | - Smita Devani
- Gastroenterology section, Aga Khan Hospital University, Nairobi P.O. Box 37002-00100, Kenya; (A.R.); (S.D.)
| | - Takashi Matsumoto
- Department of Environmental and Preventive Medicine, Faculty of Medicine, Oita University, Oita 879-5593, Japan; (E.T.-K.); (T.M.)
| | - Kimang’a Nyerere
- Department of Medical Microbiology, Jomo Kenyatta University of Agriculture and Technology, Nairobi P.O. Box 62000-00200, Kenya; (C.M.); (S.N.); (K.N.)
| | - Samuel Kariuki
- Kenya Medical Research Institute, Nairobi P.O. Box 20778-00202, Kenya;
| | - Gunturu Revathi
- Department of Pathology and Laboratory Medicine, Aga Khan Hospital University, Nairobi P.O. Box 37002-00100, Kenya; (Z.M.); (G.R.)
| | - Yoshio Yamaoka
- Department of Environmental and Preventive Medicine, Faculty of Medicine, Oita University, Oita 879-5593, Japan; (E.T.-K.); (T.M.)
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Genome Sequences of Three Colombian Helicobacter pylori Strains Isolated from Tolimense Patients. Microbiol Resour Announc 2020; 9:9/18/e00117-20. [PMID: 32354968 PMCID: PMC7193923 DOI: 10.1128/mra.00117-20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We present the complete genome sequences of three Helicobacter pylori strains isolated from patients who resided in Tolima Department, Colombia, diagnosed with chronic gastritis. The genomes present an average length of 1.6 Mbp and 1,546 genes and correspond to different H. pylori subpopulations. We present the complete genome sequences of three Helicobacter pylori strains isolated from patients who resided in Tolima Department, Colombia, diagnosed with chronic gastritis. The genomes present an average length of 1.6 Mbp and 1,546 genes and correspond to different H. pylori subpopulations.
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Hussain Z, El-Omar E, Lee YY. Dual infective burden of Helicobacter pylori and intestinal parasites: Good or bad news for the host? Indian J Gastroenterol 2020; 39:111-116. [PMID: 32372188 DOI: 10.1007/s12664-020-01045-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Zahid Hussain
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Emad El-Omar
- Microbiome Research Centre, St George and Sutherland Clinical School, University of New South Wales, Sydney, Australia
| | - Yeong Yeh Lee
- Microbiome Research Centre, St George and Sutherland Clinical School, University of New South Wales, Sydney, Australia. .,School of Medical Sciences, Universiti Sains Malaysia, Kota Bharu, Malaysia.
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Helicobacter pylori Infection, Virulence Genes' Distribution and Accompanying Clinical Outcomes: The West Africa Situation. BIOMED RESEARCH INTERNATIONAL 2019; 2019:7312908. [PMID: 31886245 PMCID: PMC6925786 DOI: 10.1155/2019/7312908] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 07/18/2019] [Accepted: 08/20/2019] [Indexed: 12/11/2022]
Abstract
Data on Helicobacter pylori (H. pylori) infection and virulence factors in countries across West Africa are scattered. This systematic review seeks to present an update on the status of H. pylori infection focusing on prevalence rate, distribution of virulent genes, and their link to clinical outcomes across countries in the western part of Africa. This information is expected to broaden the knowledge base of clinicians and researchers regarding H. pylori infection and associated virulence factors in West African countries. Search Method. A comprehensive search of the scientific literature in PubMed and ScienceDirect was conducted using the search terms including “Helicobacter pylori infection in West Africa”. Databases were sourced from January 1988 to December 2018. Results. Data on the incidence of H. pylori infection and related pathological factors were found for some countries, whereas others had no information on it. Smoking, alcohol, exposure to high levels of carcinogens and diet were reported to be involved in the pathogenesis of gastroduodenal diseases and gastric cancer. Besides the environmental factors and genetic characteristics, there are important characteristics of H. pylori such as the ability to infect, replicate, and persist in a host that have been associated with the pathogenesis of various gastroduodenal diseases. Concluding Remarks. This systematic search has provided information so far available on H. pylori virulence factors and clinical outcomes in West Africa. Accordingly, this piece has identified gaps in the body of knowledge highlighting the need for more studies to clarify the role of H. pylori virulence factors and associated clinical outcomes in the burden of this bacterial infection in West Africa, as data from these countries do not give the needed direct relation.
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Eslami M, Yousefi B, Kokhaei P, Arabkari V, Ghasemian A. Current information on the association of Helicobacter pylori with autophagy and gastric cancer. J Cell Physiol 2019; 234:14800-14811. [PMID: 30784066 DOI: 10.1002/jcp.28279] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 11/23/2018] [Accepted: 11/30/2018] [Indexed: 01/24/2023]
Abstract
Helicobacter pylori (H. pylori) is a Gram-negative bacterium and causative agent of gastric cancer. H. pylori induce defective autophagy or inhibit it by means of CagA and vacuolating cytotoxin A (VacA) toxins leading to the gastric cancer induction. Impaired or defective autophagy leads to the accumulation of cytotoxic materials, such as ROS and P62 that lead to increased mutations in the DNA, genome instability, and risk of cancer formation. H. pylori CagA may inhibit autophagy through the c-Met-PI3k/Akt-mTOR signaling pathway. However, VacA induces autophagy by some signaling pathways. In the gastric epithelial cells, VacA is a necessary and sufficient factor for the creation of autophagy. While CagA is a negative regulator of this phenomenon, the elimination of this gene from H. pylori has increased autophagy and the production of inflammatory cytokines is reduced. In gastrointestinal cancers, some of the microRNAs (miRNAs) act as tumor suppressors and some other are oncogenes by regulating various genes expression. H. pylori can also modify autophagy through a mechanism that includes the function of miRNAs. In autophagy, oncogenic miRNAs inhibit activation of some tumor suppressor signaling pathways (e.g., ULK1 complex, Beclin-1 function, and Atg4 messaging), whereas tumor suppressor miRNAs can block the activation of oncogenic signaling pathways. For instance, Beclin-1 is negatively regulated by miRNA-376b (oncogenic miRNA) and miRNA-30a (tumor suppressor miRNA). Similarly, Atg4 by miRNA-376b (oncogenic miRNA) and miRNA-101 (tumor suppressor miRNA). So, this apparent paradox can be explained as that both Beclin-1 and Atg4 play different roles in a particular cell or tissue.
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Affiliation(s)
- Majid Eslami
- Department of Bacteriology and Virology, Semnan University of Medical Sciences, Semnan, Iran
| | - Bahman Yousefi
- Department of Immunology, Semnan University of Medical Sciences, Semnan, Iran
| | - Parviz Kokhaei
- Cancer Research Center, Semnan University of Medical Sciences, Semnan, Iran
- Immune and Gene Therapy Lab, Cancer Centre Karolinska, Karolinska University Hospital, Stockholm, Sweden
| | - Vahid Arabkari
- Discipline of Pathology, Lambe Institute for Translational Research, Clinical Science Institute, School of Medicine, National University of Ireland, Galway, Ireland
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Smith S, Fowora M, Pellicano R. Infections with Helicobacter pylori and challenges encountered in Africa. World J Gastroenterol 2019; 25:3183-3195. [PMID: 31333310 PMCID: PMC6626727 DOI: 10.3748/wjg.v25.i25.3183] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 05/02/2019] [Accepted: 06/01/2019] [Indexed: 02/06/2023] Open
Abstract
Helicobacter pylori (H. pylori) is the causative agent of gastritis, peptic ulcer disease, mucosa associated lymphoid tissue lymphoma and gastric cancer (GC). While this bacterium infects 50% of the world’s population, in Africa its prevalence reach as high as 80% as the infection is acquired during childhood. Risk factors for H. pylori acquisition have been reported to be mainly due to overcrowding, to have infected siblings or parent and to unsafe water sources. Despite this high H. pylori prevalence there still does not exist an African guideline, equivalent to the Maastricht V/Florence Consensus Report of the European Helicobacter and Microbiota Study Group for the management of this infection. In this continent, although there is a paucity of epidemiologic data, a contrast between the high prevalence of H. pylori infection and the low incidence of GC has been reported. This phenomenon is the so-called “African Enigma” and it has been hypothesized that it could be explained by environmental, dietary and genetic factors. A heterogeneity of data both on diagnosis and on therapy have been published. In this context, it is evident that in several African countries the increasing rate of bacterial resistance, mainly to metronidazole and clarithromycin, requires continental guidelines to recommend the appropriate management of H. pylori. The aim of this manuscript is to review current literature on H. pylori infection in Africa, in terms of prevalence, risk factors, impact on human health, treatment and challenges encountered so as to proffer possible solutions to reduce H. pylori transmission in this continent.
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Affiliation(s)
- Stella Smith
- Department of Molecular Biology and Biotechnology, Nigerian Institute of Medical Research, Lagos PMB 2013, Nigeria
| | - Muinah Fowora
- Department of Molecular Biology and Biotechnology, Nigerian Institute of Medical Research, Lagos PMB 2013, Nigeria
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20
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Genetic diversity of Streptococcus mutans serotype c isolated from white spot and cavitated caries lesions from schoolchildren. Arch Oral Biol 2019; 100:33-41. [PMID: 30776704 DOI: 10.1016/j.archoralbio.2019.02.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 02/06/2019] [Accepted: 02/07/2019] [Indexed: 01/25/2023]
Abstract
OBJECTIVE To determine the genetic diversity of Streptococcus mutans (S. mutans) serotype c isolated from white spot and cavitated caries lesions of schoolchildren. METHODS S. mutans isolates were obtained and identify by Polymerase Chain Reaction (PCR) from 28 schoolchildren. A total of 92 S. mutans isolates, identified as serotype c by PCR, were analyzed by pulsed field gel electrophoresis after digestion of genomic DNA with SmaI enzyme. 62 isolates were obtained from white spot and cavitated caries lesions of schoolchildren that presented both lesions simultaneously and 30 isolates were from saliva and biofilm samples of schoolchildren without dental caries. Cluster analyses were performed using the Dice coefficient of the BioNumerics software version 6.0. RESULTS It was possible to determine the serotype in 190 isolates out of 255 isolates identified as S. mutans. Serotype c was the most frequent (n = 139), followed by serotype f (n = 31) and serotype e (n = 20). After analyzing the dendograms of the 92 serotype c isolates, this study identified three strains present in both types of lesions, two strains specific to the type of lesion: one strain from the white spot lesion and one strain from the cavitated caries lesion, and five strains specific to children with caries versus four strains for children without caries. CONCLUSION S. mutans serotype c genetic variability is similar in terms of the number of strains present according to the caries status and type of lesion.
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Kayali S, Manfredi M, Gaiani F, Bianchi L, Bizzarri B, Leandro G, Di Mario F, De' Angelis GL. Helicobacter pylori, transmission routes and recurrence of infection: state of the art. ACTA BIO-MEDICA : ATENEI PARMENSIS 2018; 89:72-76. [PMID: 30561421 PMCID: PMC6502203 DOI: 10.23750/abm.v89i8-s.7947] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Indexed: 02/07/2023]
Abstract
Helicobacter pylori (H. pylori) infection is one of the most common infection in humans, affecting more than half of the population. The prevalence of the infection varies widely in rural developing areas (more than 80%) compared to urban developed ones (less than 40%), as a consequence of different socioeconomic and hygienic conditions. H. pylori infection is usually acquired during childhood; infected people usually remain asymptomatic, but about 30% of individuals may develop mild to severe upper gastrointestinal diseases such as gastritis, peptic ulcer, gastric cancer or MALT lymphoma. The transmission route is not clear yet; the person-to-person transmission, especially within the same family appears to be prevalent, but also environmental contamination is possible. The eradication without a specific therapeutic regimen is very unlikely and the reinfection rate after an effective eradication therapy is quite rare. The reinfection rate will increase if there are family members affected.
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Affiliation(s)
- Stefano Kayali
- Gastroenterology and Endoscopy Unit, Department of Medicine and Surgery, University of Parma, Parma, Italy.
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Tavera G, Morgan DR, Williams SM. Tipping the Scale Toward Gastric Disease: A Host-Pathogen Genomic Mismatch? CURRENT GENETIC MEDICINE REPORTS 2018; 6:199-207. [PMID: 30775159 PMCID: PMC6373874 DOI: 10.1007/s40142-018-0153-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
PURPOSE OF REVIEW Chronic infection with Helicobacter pylori infection is necessary but not sufficient to initiate development of intestinal-type gastric adenocarcinoma. It is not clear what additional factors tip the scale from commensal bacteria towards a pathogen that facilitates development of gastric cancer. Genetic variants in both the pathogen and host have been implicated, but neither alone explains a substantial portion of disease risk. RECENT FINDINGS In this review, we consider studies that address the important role of human and bacterial genetics, ancestry and their interactions in determining gastric disease risk. We observe gaps in the current literature that should guide future work to confirm the hypothesis of the interacting roles of host and bacterial genetics that will be necessary to translate these findings into clinically relevant information. SUMMARY We summarize genetic risk factors for gastric disease in both H. pylori and human hosts. However, genetic variation of one or the other organism in isolation insufficiently explains gastric disease risk. The most promising models of gastric disease risk simultaneously consider the genetic variation of both the H. pylori and human host, under a co-evolution model.
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Affiliation(s)
- Gloria Tavera
- Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, OH, USA
| | - Douglas R Morgan
- Vanderbilt Ingram Cancer Center, Nashville, Tennessee
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Scott M Williams
- Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, OH, USA
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Helicobacter pylori Infection and Its Risk Factors: A Prospective Cross-Sectional Study in Resource-Limited Settings of Northwest Ethiopia. THE CANADIAN JOURNAL OF INFECTIOUS DISEASES & MEDICAL MICROBIOLOGY = JOURNAL CANADIEN DES MALADIES INFECTIEUSES ET DE LA MICROBIOLOGIE MEDICALE 2018; 2018:9463710. [PMID: 30420905 PMCID: PMC6211158 DOI: 10.1155/2018/9463710] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 09/19/2018] [Indexed: 12/13/2022]
Abstract
Background Helicobacter pylori (H. pylori) is implicated for the causation of gastrointestinal tract infections including gastric cancer. Although the infection is prevalent globally, the impact is immense in countries with poor environmental and socioeconomic status including Ethiopia. Epidemiological study on the magnitude of H. pylori and possible risk factors has priceless implication. Therefore, in this study, we determined the prevalence and risk factors of H. pylori infection in the resource-limited area of northwest Ethiopia. Methods A prospective cross-sectional study was conducted on northwest Ethiopia among 201 systematically selected dyspeptic patients. Data were collected using a structured and pretested questionnaire, and stool and serum samples were collected and analyzed by SD BIOLINE H. pylori Ag and dBest H. pylori Disk tests, respectively. Chi-square test was performed to see association between variables, and binary and multinomial regression tests were performed to identify potential risk factors. P values <0.05 were taken statistically significant. Result Prevalence of H. pylori was found to be 71.1% (143/201) and 37.3% (75/201) using the dBest H. pylori Test Disk and SD BIOLINE H. pylori Ag test, respectively. H. pylori seropositivity, using dBest H. pylori Disk tests, is significantly associated in age groups <10 years (P=0.044) and married patients (P=0.016). In those patients with H. pylori (a positive result with either the Ab or Ag test), drinking water from well sources had 2.23 times risk of getting H. pylori infection (P=0.017), and drinking coffee (1.51 (0.79–2.96, P=0.025)) and chat chewing (1.78 (1.02–3.46, P=0.008) are the common risk factors. Conclusion The present study discovered considerable magnitude of H. pylori among the dyspeptic patients in the study area. H. pylori infection is frequent in individuals drinking water from well sources, and thus, poor sanitation and unhygienic water supply are contributing factors. Policies aiming at improving the socioeconomic status will reduce potential sources of infection, transmission, and ultimately the prevalence and incidence of H. pylori.
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Companioni O, Bonet C, García N, Ramírez-Lázaro MJ, Lario S, Mendoza J, Adrados MM, Poves E, Espinosa L, Pozo-Kreilinger JJ, Ortega L, Bujanda L, Cosme A, Ferrández A, Muñoz G, Cuatrecasas M, Elizalde I, Andreu V, Paules MJ, Madrigal B, Barrio J, Berdasco M, Calvet X, Sanz-Anquela JM, Gisbert JP, González CA, Sala N. Genetic variation analysis in a follow-up study of gastric cancer precursor lesions confirms the association of MUC2
variants with the evolution of the lesions and identifies a significant association with NFKB1
and CD14. Int J Cancer 2018; 143:2777-2786. [PMID: 30171605 DOI: 10.1002/ijc.31839] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 07/03/2018] [Accepted: 07/11/2018] [Indexed: 01/05/2023]
Affiliation(s)
- Osmel Companioni
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Program; Catalan Institute of Oncology (ICO)-IDIBELL; Barcelona Spain
| | - Catalina Bonet
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Program; Catalan Institute of Oncology (ICO)-IDIBELL; Barcelona Spain
| | - Nadia García
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Program; Catalan Institute of Oncology (ICO)-IDIBELL; Barcelona Spain
- Translational Research Laboratory; Catalan Institute of Oncology (ICO)-IDIBELL; Barcelona Spain
| | - María José Ramírez-Lázaro
- Departament of Medicine, Digestive Diseases Service; Institut Universitari Parc Taulí, Sabadell, and Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD); Spain
| | - Sergio Lario
- Departament of Medicine, Digestive Diseases Service; Institut Universitari Parc Taulí, Sabadell, and Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD); Spain
| | - Jorge Mendoza
- Department of Gastroenterology; Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa (IIS-IP) and CIBEREHD; Madrid Spain
| | - Mª Magdalena Adrados
- Department of Pathology; Hospital Universitario de la Princesa, IIS-IP; Madrid, Spain
| | - Elvira Poves
- Department of Gastroenterology; Hospital Universitario Príncipe de Asturias; Alcalá de Henares Spain
| | - Laura Espinosa
- Department of Gastroenterology; Hospital Universitario Príncipe de Asturias; Alcalá de Henares Spain
| | | | - Luís Ortega
- Department of Pathology; Hospital Clínico San Carlos; Madrid Spain
| | - Luis Bujanda
- Department of Pathology and Hospital Donostia/Instituto Biodonostia; Universidad del País Vasco (UPV/EHU), and CIBEREHD; San Sebastián Spain
| | - Angel Cosme
- Department of Gastroenterology; Hospital Donostia/Instituto Biodonostia, Universidad del País Vasco (UPV/EHU), and CIBEREHD; San Sebastián Spain
| | - Angel Ferrández
- Department of Gastroenterology and Hospital Clínico Universitario Lozano Blesa Zaragoza, and CIBEREHD; Spain
| | - Guillermo Muñoz
- Department of Pathology; Hospital Clínico Universitario Lozano Blesa, Zaragoza, and CIBEREHD; Spain
| | - Miriam Cuatrecasas
- Department of Pathology; Hospital Clínic de Barcelona, IDIBAPS and CIBEREHD, and Universitat de Barcelona; Spain
| | - Ignasi Elizalde
- Department of Gastroenterology; Hospital Clínic de Barcelona, IDIBAPS and CIBEREHD; Spain
| | - Victoria Andreu
- Department of Gastroenterology; Hospital de Viladecans; Spain
| | - Mª José Paules
- Department of Pathology; Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat; Spain
| | - Beatriz Madrigal
- Department of Pathology; Hospital Universitario Río Hortega; Valladolid Spain
| | - Jesús Barrio
- Department of Gastroenterology; Hospital Universitario Río Hortega; Valladolid Spain
| | - María Berdasco
- Cancer Epigenetics and Biology Program, IDIBELL; Barcelona Spain
| | - Xavier Calvet
- Departament of Medicine, Digestive Diseases Service; Institut Universitari Parc Taulí, Sabadell, and Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD); Spain
| | - José Miguel Sanz-Anquela
- Department of Pathology; Hospital “Principe de Asturias” and University of Alcalá; Alcalá de Henares Spain
| | - Javier P. Gisbert
- Department of Gastroenterology; Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa (IIS-IP) and CIBEREHD; Madrid Spain
| | - Carlos A. González
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Program; Catalan Institute of Oncology (ICO)-IDIBELL; Barcelona Spain
| | - Núria Sala
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Program; Catalan Institute of Oncology (ICO)-IDIBELL; Barcelona Spain
- Translational Research Laboratory; Catalan Institute of Oncology (ICO)-IDIBELL; Barcelona Spain
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The burden of cancers and their variations across the states of India: the Global Burden of Disease Study 1990-2016. Lancet Oncol 2018; 19:1289-1306. [PMID: 30219626 PMCID: PMC6167407 DOI: 10.1016/s1470-2045(18)30447-9] [Citation(s) in RCA: 213] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 06/08/2018] [Accepted: 06/11/2018] [Indexed: 01/08/2023]
Abstract
Background Previous efforts to report estimates of cancer incidence and mortality in India and its different parts include the National Cancer Registry Programme Reports, Sample Registration System cause of death findings, Cancer Incidence in Five Continents Series, and GLOBOCAN. We present a comprehensive picture of the patterns and time trends of the burden of total cancer and specific cancer types in each state of India estimated as part of the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2016 because such a systematic compilation is not readily available. Methods We used all accessible data from multiple sources, including 42 population-based cancer registries and the nationwide Sample Registration System of India, to estimate the incidence of 28 types of cancer in every state of India from 1990 to 2016 and the deaths and disability-adjusted life-years (DALYs) caused by them, as part of GBD 2016. We present incidence, DALYs, and death rates for all cancers together, and the trends of all types of cancers, highlighting the heterogeneity in the burden of specific types of cancers across the states of India. We also present the contribution of major risk factors to cancer DALYs in India. Findings 8·3% (95% uncertainty interval [UI] 7·9–8·6) of the total deaths and 5·0% (4·6–5·5) of the total DALYs in India in 2016 were due to cancer, which was double the contribution of cancer in 1990. However, the age-standardised incidence rate of cancer did not change substantially during this period. The age-standardised cancer DALY rate had a 2·6 times variation across the states of India in 2016. The ten cancers responsible for the highest proportion of cancer DALYs in India in 2016 were stomach (9·0% of the total cancer DALYs), breast (8·2%), lung (7·5%), lip and oral cavity (7·2%), pharynx other than nasopharynx (6·8%), colon and rectum (5·8%), leukaemia (5·2%), cervical (5·2%), oesophageal (4·3%), and brain and nervous system (3·5%) cancer. Among these cancers, the age-standardised incidence rate of breast cancer increased significantly by 40·7% (95% UI 7·0–85·6) from 1990 to 2016, whereas it decreased for stomach (39·7%; 34·3–44·0), lip and oral cavity (6·4%; 0·4–18·6), cervical (39·7%; 26·5–57·3), and oesophageal cancer (31·2%; 27·9–34·9), and leukaemia (16·1%; 4·3–24·2). We found substantial inter-state heterogeneity in the age-standardised incidence rate of the different types of cancers in 2016, with a 3·3 times to 11·6 times variation for the four most frequent cancers (lip and oral, breast, lung, and stomach). Tobacco use was the leading risk factor for cancers in India to which the highest proportion (10·9%) of cancer DALYs could be attributed in 2016. Interpretation The substantial heterogeneity in the state-level incidence rate and health loss trends of the different types of cancer in India over this 26-year period should be taken into account to strengthen infrastructure and human resources for cancer prevention and control at both the national and state levels. These efforts should focus on the ten cancers contributing the highest DALYs in India, including cancers of the stomach, lung, pharynx other than nasopharynx, colon and rectum, leukaemia, oesophageal, and brain and nervous system, in addition to breast, lip and oral cavity, and cervical cancer, which are currently the focus of screening and early detection programmes. Funding Bill & Melinda Gates Foundation; and Indian Council of Medical Research, Department of Health Research, Ministry of Health and Family Welfare, Government of India.
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Guessoum M, Guechi Z, Adnane M. First-time serological and molecular detection of Helicobacter pylori in milk from Algerian local-breed cows. Vet World 2018; 11:1326-1330. [PMID: 30410241 PMCID: PMC6200577 DOI: 10.14202/vetworld.2018.1326-1330] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 08/13/2018] [Indexed: 12/26/2022] Open
Abstract
AIM The present study was conducted to detect and identify Helicobacter pylori within local cow breeds in the central region of Algeria. MATERIALS AND METHODS Two hundred (n=200) cows from three provinces of the central region of Algeria were studied, between January 2016 and September 2017. Each cow was subject to stool, milk, and blood sampling. Milk and fecal samples were used to detect and identify H. pylori using bacteriology culture method. Blood and milk samples were used to detect H. pylori immunoglobulin G (IgG) antibody using enzyme-linked immunosorbent assay. Polymerase chain reaction was used to confirm the abundance of H. pylori in milk by detecting glmM gene. RESULTS Out of 200 sera and 200 milk samples, 12% (24) and 4% (8/200) were positive for the H. pylori IgG antibody. glmM gene was detected in the milk of 13% of cows and was confirmed in all cows presenting IgG in milk. CONCLUSION From the present study, we concluded that the glmM gene is an important marker for detecting H. pylori in milk. Moreover, Algerian local-breed cows are a source of H. pylori and could be responsible for serious zoonosis.
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Affiliation(s)
- Meryem Guessoum
- Department of Pre-Clinical Medicine, High National Veterinary School, BP161 El-Harrach, Algiers, Algeria
| | - Zehor Guechi
- Department of Microbiology, Central Laboratory of Clinical Biology, University Hospital Center of Nafisa Hamoud (Parnet), Hussein Dey, Algiers, Algeria
| | - Mounir Adnane
- Department of Clinical Medicine, Institute of Veterinary Sciences, Tiaret, Algeria
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Pereira V, Abraham P, Nallapeta S, Shetty A. Gastric bacterial Flora in patients Harbouring Helicobacter pylori with or without chronic dyspepsia: analysis with matrix-assisted laser desorption ionization time-of-flight mass spectroscopy. BMC Gastroenterol 2018; 18:20. [PMID: 29373960 PMCID: PMC5787260 DOI: 10.1186/s12876-018-0744-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 01/14/2018] [Indexed: 02/06/2023] Open
Abstract
Background The gastric microbiota has recently been implicated in the causation of organic/structural gastroduodenal diseases (gastric and duodenal ulcers, gastric cancer) in patients with Helicobacter pylori (H. pylori) infection. We aimed to ascertain, in patients harbouring H. pylori, the role of the gastric microbiota in the causation of symptoms (chronic dyspepsia) in the absence of organic disease. Methods Seventy-four gastric biopsy samples obtained at endoscopy from patients with (n = 21) or without (n = 53) chronic dyspepsia, and that tested positive by the bedside rapid urease test for H. pylori infection, were cultured for detection of H. pylori and non-H. pylori organisms. The cultured organisms were identified by matrix-assisted laser desorption ionization time-of-flight mass spectroscopy (MALDI-TOF MS). Results A total of 106 non-H. pylori isolates were obtained from 74 patients’ samples. This included 33 isolates (median 2, range 1–2 per patient) from dyspeptic and 73 (median 2, range 1–2 per patient) from non-dyspeptic patients. These were identified from the Bruker Biotyper 2 database as Staphylococcus spp., Streptococcus spp., Lactobacillus spp., Micrococcus spp., Enterococcus spp., Pseudomonas spp., Escherichia spp., Klebsiella spp. and Bacillus spp., Staphylococcus and Lactobacillus were identified significantly more commonly in dyspeptics and Streptococcus, Pseudomonas, Escherichia coli and Klebsiella pneumoniae in non-dyspeptics. All identified organisms belonged to the phyla Firmicutes and Proteobacteria. Conclusions There is a qualitative difference in the gastric microbial spectrum between patients harbouring H. pylori with and without chronic dyspepsia. Whether these organisms have an independent role in the development or prevention of dyspepsia or act in concurrence with H. pylori needs study.
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Affiliation(s)
- Verima Pereira
- Division of Gastroenterology, P D Hinduja Hospital, V S Marg, Mahim, Mumbai, 400016, India
| | - Philip Abraham
- Division of Gastroenterology, P D Hinduja Hospital, V S Marg, Mahim, Mumbai, 400016, India.
| | | | - Anjali Shetty
- Division of Microbiology, P D Hinduja Hospital, Mumbai, India
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Mommersteeg MC, Yu J, Peppelenbosch MP, Fuhler GM. Genetic host factors in Helicobacter pylori-induced carcinogenesis: Emerging new paradigms. Biochim Biophys Acta Rev Cancer 2017; 1869:42-52. [PMID: 29154808 DOI: 10.1016/j.bbcan.2017.11.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 11/13/2017] [Accepted: 11/13/2017] [Indexed: 02/09/2023]
Abstract
Helicobacter Pylori is a gram negative rod shaped microaerophilic bacterium that colonizes the stomach of approximately half the world's population. Infection with c may cause chronic gastritis which via a quite well described process known as Correas cascade can progress through sequential development of atrophic gastritis, intestinal metaplasia and dysplasia to gastric cancer. H. pylori is currently the only bacterium that is classified as a class 1 carcinogen by the WHO, although the exact mechanisms by which this bacterium contributes to gastric carcinogenesis are still poorly understood. Only a minority of H. pylori-infected patients will eventually develop gastric cancer, suggesting that host factors may be important in determining the outcome of H. pylori infection. This is supported by a growing body of evidence suggesting that the host genetic background contributes to risk of H. pylori infection and gastric carcinogenesis. In particular single nucleotide polymorphisms in genes that influence bacterial handling via pattern recognition receptors appear to be involved, further strengthening the link between host risk factors, H. pylori incidence and cancer. Many of these genes influence cellular pathways leading to inflammatory signaling, inflammasome formation and autophagy. In this review we summarize known carcinogenic effects of H. pylori, and discuss recent findings that implicate host genetic pattern recognition pathways in the development of gastric cancer and their relation with H. pylori.
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Affiliation(s)
- Michiel C Mommersteeg
- Department of Gastroenterology and Hepatology, Erasmus MC University Medical center Rotterdam, Office NA-619, PO Box 2040, 3000 CA Rotterdam, The Netherlands.
| | - Jun Yu
- Department of Medicine and Therapeutics, Institute of Digestive Disease, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences and CUHK-Shenzhen Research Institute, Rm 707A, 7/F., Li Ka Shing Medical Science Building, The Chinese University of Hong Kong, Hong Kong.
| | - Maikel P Peppelenbosch
- Department of Gastroenterology and Hepatology, Erasmus MC University Medical center Rotterdam, Office NA-619, PO Box 2040, 3000 CA Rotterdam, The Netherlands.
| | - Gwenny M Fuhler
- Department of Gastroenterology and Hepatology, Erasmus MC University Medical center Rotterdam, Office NA-619, PO Box 2040, 3000 CA Rotterdam, The Netherlands.
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周 林, 赵 阳, 张 伟. 幽门螺杆菌根除治疗在胃癌预防中的现状及前景. Shijie Huaren Xiaohua Zazhi 2017; 25:1327-1337. [DOI: 10.11569/wcjd.v25.i15.1327] [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] [Indexed: 02/06/2023] Open
Abstract
幽门螺杆菌(Helicobacter pylori, H. pylori)与胃癌(gastric cancer, GC)发生发展密切相关, 根除H. pylori可降低GC发生率. 经济学分析表明, 在高危人群中根除治疗H. pylori作为预防GC的策略是成本效益较好的. 即使在GC低风险人群中, H. pylori筛查和治疗也能使上消化道其他非恶性疾病获益. 然而, 广泛开展H. pylori根除治疗可能带来其他问题, 包括抗生素耐药增加和与H. pylori负相关疾病(如胃食管反流病、Barrett食管、哮喘和肥胖等)的患病率升高. 本文将结合近年最新研究, 就上述问题展开论述, 进一步提出H. pylori根除治疗预防GC所面临的挑战以及将来可能的进展方向.
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Abstract
Helicobacter pylori is an important human pathogen, associated with a substantial burden from both malignant and non-malignant diseases. The bacterium is classed as a human carcinogen, being strongly linked with gastric cancer, the third most common cause of cancer death worldwide and is also associated with common conditions such as dyspepsia and peptic ulcer. Eradication of H. pylori reduces the incidence of gastric cancer and peptic ulcer, as well as the prevalence and costs of managing dyspepsia. Economic analyses suggest that eradication of H. pylori as a means of controlling gastric cancer is cost-effective in high-risk populations. Even in populations at low risk of gastric cancer, there might be other benefits arising from screening and treatment, owing to the effects on non-malignant upper gastrointestinal diseases. However, public health authorities have been slow to consider the benefits of population-based screening and treatment as a means of reducing the morbidity and mortality associated with the infection. There are also concerns about widespread use of eradication therapy, including antimicrobial resistance and a rise in the prevalence of diseases that are negatively associated with H. pylori, such as GERD, Barrett oesophagus, asthma and obesity. This Review summarizes these issues.
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Kumar S, Kumari N, Mittal RD, Ghoshal UC. Pepsinogen-II 100 bp ins/del gene polymorphism and its elevated circulating levels are associated with gastric cancer, particularly with Helicobacter pylori infection and intestinal metaplasia. Gastric Cancer 2016; 19:808-16. [PMID: 26486507 DOI: 10.1007/s10120-015-0550-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 09/22/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND Polymorphism in the gene of pepsinogen-II (PG-II) and its serum level are effective biomarkers for terminal differentiation of gastric mucosa into gastritis, intestinal metaplasia (IM), and gastric cancer (GC) in relationship to Helicobacter pylori infection. METHODS Genotyping of the PG-II 100 bp insertion/deletion (ins/del) polymorphism was performed in patients with GC (n = 192) and age- and gender-matched H. pylori-associated dyspepsia (n = 180) and healthy subjects (HS, n = 240) by PCR. IgG anti-H. pylori (in all subjects) and serum PG-II levels were estimated in 145 patients each with GC and dyspepsia and in 65 healthy controls (HC) using ELISA (Biohit Oyj, Finland). RESULTS Five alleles were amplified by PCR: allele 5 (510 bp), allele 4 (480 bp), allele 3 (450 bp), allele 2 (400 bp), and allele 1 (shorter allele, 310 bp). Allele 1 carriage was infrequent, and serum PG-II level was higher among patients with GC than in HC [OR 0.43 (95 % CI, 0.29-0.85), p < 0.001 and mean ± SD; 17.53 ± 12.60 vs. 12.77 ± 7.53 µg/l, p = 0.005, respectively], particularly in the presence of H. pylori [OR 0.42 (0.25-0.71), p = 0.001 and 18.78 ± 12.63 vs. 13.97 ± 8.14, p = 0.034]. However, allele 1 carriage and PG-II levels were comparable among patients with GC and dyspepsia. Patients with IM also carried allele 1 infrequently and had higher levels of PG-II than those without [OR 0.5 (0.29-0.85), p = 0.011 and 20.07 ± 14.22 vs. 16.61 ± 12.08, p = 0.048]. CONCLUSIONS Carriage of the shorter allele of the PG-II 100 bp ins/del polymorphism and elevated levels of PG-II are associated with GC, particularly with H. pylori infection and IM.
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Affiliation(s)
- Sushil Kumar
- Department of Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, 226014, India
| | - Niraj Kumari
- Department of Pathology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, 226014, India
| | - Rama D Mittal
- Department of Urology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, 226014, India
| | - Uday C Ghoshal
- Department of Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, 226014, India.
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Oliveros-Bastidas A, Calcagno-Pissarelli MP, Naya M, Ávila-Núñez JL, Alonso-Amelot ME. Human gastric cancer, Helicobacter pylori and bracken carcinogens: A connecting hypothesis. Med Hypotheses 2016; 88:91-9. [DOI: 10.1016/j.mehy.2015.11.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Revised: 09/29/2015] [Accepted: 11/08/2015] [Indexed: 12/12/2022]
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Kumar S, Kumari N, Mittal RD, Mohindra S, Ghoshal UC. Association between pro-(IL-8) and anti-inflammatory (IL-10) cytokine variants and their serum levels and H. pylori-related gastric carcinogenesis in northern India. Meta Gene 2015. [PMID: 26380815 DOI: 10.1016/j.mgeme.2015.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2023] Open
Abstract
BACKGROUND Interleukin (IL)-8 -251 T/A and IL-10 (-1082 G/A and -819/592 C/T) polymorphisms and their expression may influence gastritis, atrophy, intestinal metaplasia (IM) and gastric cancer (GC) following H. pylori infection. METHODS Genotyping of these genes was performed (ASO-PCR) in 200, 182 and 250 with GC, functional dyspepsia (FD) and healthy controls (HC), respectively. Anti-H. pylori IgG-antibody was tested in all and serums IL-8 and IL-10 were measured randomly in 60 subjects of each group by ELISA. RESULTS Pro-(IL-8)-251 AA and anti-inflammatory (IL-10)-819 TT genotypes were commoner among GC than HC (p = 0.023, OR 1.86 [1.09-3.2] and p = 0.020, OR 2.0 [1.11-3.5]) but comparable with FD. IL-8 AA and IL-10-819 T allele carriage was also commoner in H. pylori-infected GC than HC (p = 0.011, OR 2.47 [1.23-5.0], and p = 0.018, OR 2.3 (1.16-4.59). IL-10-1082 G/A genotype and haplotypes (ACC, GCC, ATA and GTA) were comparable in all groups. Circulating levels of IL-8 and IL-10 were higher among GC than HC but comparable to FD (IL-8; 57.64 [6.44-319.46] vs. 54.35 [4.24-318.96] and 26.33 [4.67-304.54] pg/ml, p < 0.001 and IL-10; 15.47 [1.01-270.87] vs. 12.28 [0.96-64.88] and 3.79 [1.24-56.65], p < 0.001 for GC vs. HC). IL-8/IL-10 ratio was lower among GC than HC but higher than FD (3.7 [0.18-38.41] vs. 6.59 [0.98-130.2], p < 0.001 and 4.22 [0.15-61.4], p < 0.01). Circulating levels of IL-8, IL-10 and IL-8/lL-10 ratios were different among H. pylori-infected and non-infected GC than HC (p < 0.001, p < 0.001 and p < 0.01). CONCLUSIONS Pro-(IL-8)-251 T/A and anti-inflammatory (IL-10)-819 C/T gene polymorphisms and their circulating levels may play a role in H. pylori-associated gastric carcinogenesis in northern India.
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Key Words
- ARMS-PCR, Amplification refractory mutation system-polymerase chain reaction
- EDTA, Ethylene diamine tetra acetic acid
- EIU, Enzyme immune unit
- ELISA, Enzyme linked immune-sorbent assay
- FD, Functional dyspepsia
- Functional dyspepsia
- GC, Gastric cancer
- Gastric cancer
- Genetic polymorphism
- H. pylori, Helicobacter pylori
- HC, Healthy control
- Helicobacter pylori
- IL, Interleukin
- IM, Intestinal metaplasia
- Interleukin
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Affiliation(s)
- Sushil Kumar
- Department of Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Niraj Kumari
- Department of Pathology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Rama Devi Mittal
- Department of Urology and Renal Transplantation, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Samir Mohindra
- Department of Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Uday C Ghoshal
- Department of Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
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Incidence of Gastric Cancer in Marrakech and Casablanca, Morocco. J Cancer Epidemiol 2015; 2015:704569. [PMID: 26576155 PMCID: PMC4631898 DOI: 10.1155/2015/704569] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 09/22/2015] [Accepted: 09/28/2015] [Indexed: 01/26/2023] Open
Abstract
Gastric cancer is the fifth most common cancer globally with over 70% of new cases occurring in developing countries. In Morocco, oncologists in Marrakech suspected higher frequency of gastric cancer compared to Casablanca, a city 150 kilometers away. This study calculated age-specific, sex-specific, and total incidence rates of gastric cancer in Marrakech and was compared to the Casablanca population-based cancer registry. Using medical records from Center Hospital University Mohammad VI and reports from 4 main private pathology laboratories in Marrakech, we identified 774 patients for the period 2008–2012. Comparison of rates showed higher age-specific incidence in Marrakech in nearly all age groups for both genders. A higher total incidence in Marrakech than in Casablanca was found with rates of 5.50 and 3.23 per 100,000, respectively. Incidence was significantly higher among males in Marrakech than males in Casablanca (7.19 and 3.91 per 100,000, resp.) and females in Marrakech compared to females in Casablanca (3.87 and 2.58 per 100,000, resp.). Future studies should address possible underestimation of gastric cancer in Marrakech, estimate incidence in other regions of Morocco, and investigate possible risk factors to explain the difference in rates.
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Kumar S, Kumari N, Mittal RD, Mohindra S, Ghoshal UC. Association between pro-(IL-8) and anti-inflammatory (IL-10) cytokine variants and their serum levels and H. pylori-related gastric carcinogenesis in northern India. Meta Gene 2015; 6:9-16. [PMID: 26380815 PMCID: PMC4556814 DOI: 10.1016/j.mgene.2015.07.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 06/22/2015] [Accepted: 07/19/2015] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Interleukin (IL)-8 -251 T/A and IL-10 (-1082 G/A and -819/592 C/T) polymorphisms and their expression may influence gastritis, atrophy, intestinal metaplasia (IM) and gastric cancer (GC) following H. pylori infection. METHODS Genotyping of these genes was performed (ASO-PCR) in 200, 182 and 250 with GC, functional dyspepsia (FD) and healthy controls (HC), respectively. Anti-H. pylori IgG-antibody was tested in all and serums IL-8 and IL-10 were measured randomly in 60 subjects of each group by ELISA. RESULTS Pro-(IL-8)-251 AA and anti-inflammatory (IL-10)-819 TT genotypes were commoner among GC than HC (p = 0.023, OR 1.86 [1.09-3.2] and p = 0.020, OR 2.0 [1.11-3.5]) but comparable with FD. IL-8 AA and IL-10-819 T allele carriage was also commoner in H. pylori-infected GC than HC (p = 0.011, OR 2.47 [1.23-5.0], and p = 0.018, OR 2.3 (1.16-4.59). IL-10-1082 G/A genotype and haplotypes (ACC, GCC, ATA and GTA) were comparable in all groups. Circulating levels of IL-8 and IL-10 were higher among GC than HC but comparable to FD (IL-8; 57.64 [6.44-319.46] vs. 54.35 [4.24-318.96] and 26.33 [4.67-304.54] pg/ml, p < 0.001 and IL-10; 15.47 [1.01-270.87] vs. 12.28 [0.96-64.88] and 3.79 [1.24-56.65], p < 0.001 for GC vs. HC). IL-8/IL-10 ratio was lower among GC than HC but higher than FD (3.7 [0.18-38.41] vs. 6.59 [0.98-130.2], p < 0.001 and 4.22 [0.15-61.4], p < 0.01). Circulating levels of IL-8, IL-10 and IL-8/lL-10 ratios were different among H. pylori-infected and non-infected GC than HC (p < 0.001, p < 0.001 and p < 0.01). CONCLUSIONS Pro-(IL-8)-251 T/A and anti-inflammatory (IL-10)-819 C/T gene polymorphisms and their circulating levels may play a role in H. pylori-associated gastric carcinogenesis in northern India.
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Key Words
- ARMS-PCR, Amplification refractory mutation system-polymerase chain reaction
- EDTA, Ethylene diamine tetra acetic acid
- EIU, Enzyme immune unit
- ELISA, Enzyme linked immune-sorbent assay
- FD, Functional dyspepsia
- Functional dyspepsia
- GC, Gastric cancer
- Gastric cancer
- Genetic polymorphism
- H. pylori, Helicobacter pylori
- HC, Healthy control
- Helicobacter pylori
- IL, Interleukin
- IM, Intestinal metaplasia
- Interleukin
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Affiliation(s)
- Sushil Kumar
- Department of Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Niraj Kumari
- Department of Pathology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Rama Devi Mittal
- Department of Urology and Renal Transplantation, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Samir Mohindra
- Department of Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
| | - Uday C Ghoshal
- Department of Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow 226014, India
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Ghosh P, Bodhankar SL. Association of smoking, alcohol and NSAIDs use with expression of cag A and cag T genes of Helicobacter pylori in salivary samples of asymptomatic subjects. Asian Pac J Trop Biomed 2015; 2:479-84. [PMID: 23569954 DOI: 10.1016/s2221-1691(12)60080-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Revised: 11/15/2011] [Accepted: 12/10/2011] [Indexed: 01/05/2023] Open
Abstract
OBJECTIVE To determine the association of smoking, alcohol and nonsteroidal anti-inflammatory drugs (NSAIDs) use with presence and virulence of Helicobacter pylori (H. pylori) infection in a representative sample of a random adult population of asymptomatic subjects. METHODS Non virulent 16S rRNA and virulent cag A and T genes from salivary samples of 854 asymptomatic subjects were determined using polymerase chain reaction. The presence and absence of virulent and non virulent infection was statistically compared with consumption of smoking, alcohol and NSAIDs. RESULTS The prevalence of infection in male and female subjects was found to be 69.25% and 66.90%, respectively. The prevalence of infection in the population of asymptomatic subjects with respect to consumption of alcohol was as follows: current (31.22%), former (52.20%) and never (43.58%). The prevalence of infection in the population of asymptomatic subjects with respect to smoking of cigarettes was as follows: current (88.80%), former (57.14%) and never (33.33%). The prevalence of infection in the subject population consuming NSAIDs and not consuming NSAIDs frequently was found to be 82.75% and 21.16%, respectively. Virulence in male and female subjects was found to be 60.00% and 50.00%, respectively. The presence of virulent infection in the population of asymptomatic subjects with respect to consumption of alcohol was as follows: current (28.57%), former (40.15%) and never (50.00%). The prevalence of virulent infection in the population of asymptomatic subjects with respect to smoking of cigarettes was as follows: current (79.32%), former (75.00%) and never (50.00%). The prevalence of virulent infection in the subject population consuming NSAIDs and not consuming NSAIDs frequently was found to be 88.23% and 66.66%, respectively. CONCLUSIONS It can be concluded that smoking and NSAIDs consumption are aggravating factors for virulence of H. pylori and alcohol can inhibit H. pylori infection in asymptomatic subjects.
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Affiliation(s)
- Pinaki Ghosh
- Department of Pharmacology, Poona College of Pharmacy, Bharati Vidyapeeth Deemed University, Pune, Maharashtra, 411038, India
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Wang Y, Huang LH, Xu CX, Xiao J, Zhou L, Cao D, Liu XM, Qi Y. Connexin 32 and 43 promoter methylation in Helicobacter pylori-associated gastric tumorigenesis. World J Gastroenterol 2014; 20:11770-9. [PMID: 25206281 PMCID: PMC4155367 DOI: 10.3748/wjg.v20.i33.11770] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 03/11/2014] [Accepted: 03/19/2014] [Indexed: 02/06/2023] Open
Abstract
AIM To explore the mechanism of abnormal Connexin (Cx) 32 and Cx43 expression in the gastric mucosa after Helicobacter pylori (H. pylori) infection. METHODS Biopsy specimens of gastric mucosa in different gastric carcinogenesis stages with H. pylori infection, that is, non-atrophic gastritis (NAG; n = 24), chronic atrophic gastritis (CAG; n = 25), intestinal metaplasia (IM; n = 28), dysplasia (DYS; n = 24), and gastric cancer (GC; n = 30), as well as specimens of normal gastric mucosa without H. pylori infection (NGM; n = 25), were confirmed by endoscopy and pathological examination. Cx32 and Cx43 mRNA expression was detected by real-time polymerase chain reaction (PCR). Cx32 and Cx43 promoter CpG island methylation status was determined by methylation-specific PCR (MSP), bisulfite PCR sequencing (BSP) and MassArray methods. RESULTS The relative mRNA expression levels in the gastric mucosa of patients with NGM, NAG, CAG, IM, DYS and GC were 0.146 ± 0.011, 0.133 ± 0.026, 0.107 ± 0.035, 0.039 ± 0.032, 0.037 ± 0.01 and 0.03 ± 0.011 for Cx32; and 0.667 ± 0.057, 0.644 ± 0.051, 0.624 ± 0.049, 0.555 ± 0.067, 0.536 ± 0.058 and 0.245 ± 0.121 for Cx43, respectively, which were gradually decreasing and significantly different (GC vs NGM: P < 0.001 for Cx32, P < 0.001 for Cx43). The promoter methylation levels in the gastric mucosa from NGM to GC stages by MSP were 38.8% ± 9.0%, 43.1% ± 9.4%, 56.5% ± 3.1%, 64.4% ± 9.7%, 72.5% ± 4.2% and 79.6% ± 6.8% for Cx32; and 49.0% ± 3.9%, 58.1% ± 5.0%, 66.5% ± 7.9%, 74.0% ± 8.8%, 78.3% ± 3.6% and 88.7% ± 6.2% for Cx43, respectively, which were gradually increasing and significantly different (P = 0.039, P = 0.019). The promoter methylation levels by BSP and MassArray exhibited similar trends. Cx32 and Cx43 mRNA expression was negatively correlated with promoter methylation status and gastric carcinogenesis stages (P < 0.001, P = 0.016). CONCLUSION Cx32 and Cx43 mRNA expression decreased gradually during H. pylori infection-associated gastric carcinogenesis, and it is associated with hypermethylation of these genes' promoter.
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Human and Helicobacter pylori coevolution shapes the risk of gastric disease. Proc Natl Acad Sci U S A 2014; 111:1455-60. [PMID: 24474772 DOI: 10.1073/pnas.1318093111] [Citation(s) in RCA: 167] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Helicobacter pylori is the principal cause of gastric cancer, the second leading cause of cancer mortality worldwide. However, H. pylori prevalence generally does not predict cancer incidence. To determine whether coevolution between host and pathogen influences disease risk, we examined the association between the severity of gastric lesions and patterns of genomic variation in matched human and H. pylori samples. Patients were recruited from two geographically distinct Colombian populations with significantly different incidences of gastric cancer, but virtually identical prevalence of H. pylori infection. All H. pylori isolates contained the genetic signatures of multiple ancestries, with an ancestral African cluster predominating in a low-risk, coastal population and a European cluster in a high-risk, mountain population. The human ancestry of the biopsied individuals also varied with geography, with mostly African ancestry in the coastal region (58%), and mostly Amerindian ancestry in the mountain region (67%). The interaction between the host and pathogen ancestries completely accounted for the difference in the severity of gastric lesions in the two regions of Colombia. In particular, African H. pylori ancestry was relatively benign in humans of African ancestry but was deleterious in individuals with substantial Amerindian ancestry. Thus, coevolution likely modulated disease risk, and the disruption of coevolved human and H. pylori genomes can explain the high incidence of gastric disease in the mountain population.
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Vedham V, Divi RL, Starks VL, Verma M. Multiple infections and cancer: implications in epidemiology. Technol Cancer Res Treat 2013; 13:177-94. [PMID: 23919392 DOI: 10.7785/tcrt.2012.500366] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Approximately 18% of the global cancer burden has been attributed to infectious agents, with estimates ranging from 7% in developed countries to about 22% in developing countries. Chronic infections caused by the hepatitis B and C viruses, human papilloma viruses (HPV), and Helicobacter pylori (H. pylori) are reported to be responsible for approximately 15% of all human cancers. Interestingly, although many of the infectious agents that have been associated with cancer--such as HPV, Epstein-Barr virus (EBV), and H. pylori--are highly prevalent in the world, most infected individuals do not develop cancer but remain lifelong carriers. Malignancies associated with infectious agents may result from prolonged latency as a result of chronic infections. Pathogenic infections are necessary but are not sufficient for cancer initiation or progression. Cancer initiation may require additional cofactors, including secondary infections. Therefore, in patients with chronic infection with one agent, secondary co-infection with another agent may serve as an important co-factor that may cause cancer initiation and progression. Additionally, opportunistic co-infections could significantly inhibit response to cancer treatment and increase cancer mortality. Co-infections are relatively common in areas with a high prevalence of infectious agents, especially in developing countries. These co-infections can cause an imbalance in the host immune system by affecting persistence of and susceptibility to malignant infections. Several articles have been published that focus on infectious agents and cancer. In this article, we discuss the role of infectious agents in malignancies, highlight the role of multiple/co-infections in cancer etiology, and review implications for cancer epidemiology.
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Affiliation(s)
- Vidya Vedham
- Methods and Technologies Branch, Epidemiology and Genomics Research Program, Division of Cancer Control and Population Sciences, National Cancer Institute, National Institutes of Health (NIH), 6130 Executive Boulevard, Suite 5100, Bethesda, MD 20892-7324, USA.
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Association of microsomal epoxide hydrolase exon 3 Tyr113His and exon 4 His139Arg polymorphisms with gastric cancer in India. Indian J Gastroenterol 2013; 32:246-52. [PMID: 23580125 DOI: 10.1007/s12664-013-0332-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Accepted: 02/17/2013] [Indexed: 02/04/2023]
Abstract
BACKGROUND Microsomal epoxide hydrolase, an important phase II xenobiotic enzyme, exhibits polymorphisms at exon 3 (Tyr113His [T/C]) and exon 4 (His139Arg [A/G]), which modulate enzyme activity; this may affect susceptibility to cancers. We studied association between these polymorphisms and gastric cancer (GC). METHODS In a prospective study, 77 patients with GC, 50 with peptic ulcer, and 160 healthy controls (HC) were genotyped for exon 3 (PCR-RFLP followed by sequencing) and exon 4 (PCR-RFLP). Helicobacter pylori was considered to be present if two of three tests (histology, rapid urease test, and IgG antibody) were positive. RESULTS Tyr113His and His139Arg genotypes and haplotypes were comparable among groups. 113His carriers were commoner among H. pylori-negative patients with GC than HC (p-value = 0.019, odds ratio (OR) = 2.5, 95 % confidence interval (CI) = 1.2-5.4). Haplotype combination of exons 3 and 4 113Tyr-139Arg (TA) were associated with higher and reduced risk in patients with GC than HC in presence and absence of H. pylori (25 % vs. 11 %; p-value = 0.033, OR = 2.61, 95 % CI = 1.08-6.3 and 11.6 % vs. 28.7 %; p-value = 0.004, OR = 0.33, 95 % CI = 0.15-0.7, respectively). CONCLUSIONS Though 113Tyr-139Arg was associated with GC in presence of H. pylori, in its absence, it appeared to be protective. Exon 3, 113His, however, was associated with GC even in absence of H. pylori infection.
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Arismendi-Morillo G, Hernández I, Mengual E, Abreu N, Molero N, Fuenmayor A, Romero G, Lizarzábal M. [Gastric cancer risk estimate in patients with chronic gastritis associated with Helicobacter pylori infection in a clinical setting]. REVISTA DE GASTROENTEROLOGÍA DE MÉXICO 2013; 78:135-43. [PMID: 23538133 DOI: 10.1016/j.rgmx.2013.01.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 01/14/2013] [Accepted: 01/21/2013] [Indexed: 12/13/2022]
Abstract
BACKGROUND/AIM Severity of chronic gastritis associated with Helicobacter pylori infection (CGAHpI) could play a role in evaluating the potential risk to develop gastric cancer. Our aim was to estimate the risk for gastric cancer in a clinical setting, according to histopathologic criteria, by applying the gastric cancer risk index (GCRI) METHODS: Histopathologic study of the gastric biopsies (corpus-antrum) from consecutive adult patients that underwent gastroesophageal duodenoscopy was carried out, and the GCRI was applied in patients presenting with CGAHpI. RESULTS One hundred eleven patients (77% female) with a mean age of 38.6±13.1 years were included. Active Helicobacter pylori infection (aHpi) was diagnosed in 77 cases (69.40%). In 45% of the cases with aHpi, pangastritis (23%) or corpus-predominant gastritis (22%) was diagnosed. Nine cases were diagnosed with intestinal metaplasia (8%), 7 of which (77.70%) were in the aHpi group. Twenty one percent of the patients with aHpi had a GCRI of 2 (18.10%) or 3 (2.50%) points (high risk index), while 79.10% accumulated a GCRI of 0 or 1 points (low risk index). Of the patients with no aHpi, none of them had 3 points (p=0.001). Of the 18 patients that accumulated 2 or 3 points, 6 (33.30%) presented with intestinal metaplasia (all with pangastritis and corpus-predominant gastritis), of which 4 cases (66.60%) had aHpi. CONCLUSIONS The estimated gastric cancer risk in patients with CGAHpI in the clinical setting studied was relatively low and 5% of the patients had a histopathologic phenotype associated with an elevated risk for developing gastric cancer.
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Affiliation(s)
- G Arismendi-Morillo
- Laboratorio de Investigaciones Gastrointestinales, Instituto de Investigaciones Biológicas, Maracaibo, Venezuela.
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Laroiya I, Pankaja SS, Mittal S, Kate V. A study of Helicobacter pylori infection, dietary pattern and habits in patients with gastric cancer in South India. ASIAN PACIFIC JOURNAL OF TROPICAL DISEASE 2012. [DOI: 10.1016/s2222-1808(12)60006-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Agréus L, Kuipers EJ, Kupcinskas L, Malfertheiner P, Di Mario F, Leja M, Mahachai V, Yaron N, Van Oijen M, Perez GP, Rugge M, Ronkainen J, Salaspuro M, Sipponen P, Sugano K, Sung J. Rationale in diagnosis and screening of atrophic gastritis with stomach-specific plasma biomarkers. Scand J Gastroenterol 2012; 47:136-47. [PMID: 22242613 PMCID: PMC3279132 DOI: 10.3109/00365521.2011.645501] [Citation(s) in RCA: 103] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2011] [Revised: 11/22/2011] [Accepted: 11/22/2011] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIMS Atrophic gastritis (AG) results most often from Helicobacter pylori (H. pylori) infection. AG is the most important single risk condition for gastric cancer that often leads to an acid-free or hypochlorhydric stomach. In the present paper, we suggest a rationale for noninvasive screening of AG with stomach-specific biomarkers. METHODS The paper summarizes a set of data on application of the biomarkers and describes how the test results could be interpreted in practice. RESULTS In AG of the gastric corpus and fundus, the plasma levels of pepsinogen I and/or the pepsinogen I/pepsinogen II ratio are always low. The fasting level of gastrin-17 is high in AG limited to the corpus and fundus, but low or non-elevated if the AG occurs in both antrum and corpus. A low fasting level of G-17 is a sign of antral AG or indicates high intragastric acidity. Differentiation between antral AG and high intragastric acidity can be done by assaying the plasma G-17 before and after protein stimulation, or before and after administration of the proton pump inhibitors (PPI). Amidated G-17 will rise if the antral mucosa is normal in structure. H. pylori antibodies are a reliable indicator of helicobacter infection, even in patients with AG and hypochlorhydria. CONCLUSIONS Stomach-specific biomarkers provide information about the stomach health and about the function of stomach mucosa and are a noninvasive tool for diagnosis and screening of AG and acid-free stomach.
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Affiliation(s)
- Lars Agréus
- Karolinska Institute, Center for Family and Community Medicine, Stockholm, Sweden
| | - Ernst J Kuipers
- Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Limas Kupcinskas
- Institute for Digestive Research, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Peter Malfertheiner
- University, Department of Gastroenterology, Hepatology and Infectious Diseases, Magdeburg, Germany
| | - Francesco Di Mario
- Department of Clinical Sciences, University of Parma, Section of Gastroenterology, Parma, Italy
| | - Marcis Leja
- Riga East University Hospital, Digestive Diseases Centre, Riga, Latvia
| | - Varocha Mahachai
- Department of Medicine, Division of Gastroenterology, Chulalongkorn University, Thailand
| | - Niv Yaron
- Department of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel
| | - Martijn Van Oijen
- Dept. Gastroenterology and Hepatology, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | - Massimo Rugge
- Department of Pathology, University of Padova, Padova, Italy
| | | | - Mikko Salaspuro
- University of Helsinki, Research Unit on Acetaldehyde and Cancer, Helsinki, Finland
| | | | - Kentaro Sugano
- Department of Internal Medicine, Division of Gastroenterology, Jichi Medical University, Tochigi, Japan
| | - Joseph Sung
- Institute of Digestive Disease, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
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Rogers AB. Gastric Helicobacter spp. in animal models: pathogenesis and modulation by extragastric coinfections. Methods Mol Biol 2012; 921:175-188. [PMID: 23015504 DOI: 10.1007/978-1-62703-005-2_21] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Animal models are used to study complex host, microbial, and environmental influences associated with gastric Helicobacter infection. Evidence that gastric helicobacters are pathogenic in animals first came from ferrets. Felids, nonhuman primates, and many other species also harbor stomach helicobacters. Today, mice are preferred by most researchers for scientific investigation because of cost-efficiencies, rapid reproduction, choice of laboratory reagents, and availability of genetically engineered models. Infection with Helicobacter felis or H. pylori Sydney strain-1 in appropriate mouse strains produces disease with remarkable similarities to H. pylori in humans. Due to recent advances in genetic engineering, in vivo imaging, and system-wide genomics and proteomics, these models will become even more widespread in the future. Recently, it has been shown that extragastric infections can dramatically affect the severity of disease induced by gastric Helicobacter spp. through heterologous immunity. These models provide proof-of-principle for the "African enigma" wherein gastric cancer is underrepresented in low-lying tropical countries with concurrently high H. pylori and internal parasite prevalence. Helicobacter gastritis and carcinogenesis in mouse models may be augmented or ameliorated by other infectious agents depending on the character of the invoked immune response. Knowledge gained from the Human Microbiome Project and other investigations is certain to shed new light on the influence of extragastric bacterial, viral, fungal, and parasitic coinfections on H. pylori-associated peptic ulcer disease and gastric adenocarcinoma.
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Affiliation(s)
- Arlin B Rogers
- Lineberger Comprehensive Cancer Center and Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC, USA.
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Gosavi TP, Ghosh P, Kandhare AD, Kumar VS, Adil M, Rajmane AR, Bodhankar SL. Therapeutic effect of H. pylori nosode, a homeopathic preparation in healing of chronic H. pylori infected ulcers in laboratory animals. ASIAN PACIFIC JOURNAL OF TROPICAL DISEASE 2012. [DOI: 10.1016/s2222-1808(12)60230-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Correa P, Piazuelo MB. Helicobacter pylori Infection and Gastric Adenocarcinoma. US GASTROENTEROLOGY & HEPATOLOGY REVIEW 2011; 7:59-64. [PMID: 21857882 PMCID: PMC3158605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Gastric adenocarcinoma is the second leading cause of cancer-related mortality worldwide. Infection with Helicobacter pylori is the strongest recognized risk factor for gastric adenocarcinoma. This bacterial species colonizes the stomach of more than half of the world's population; however, only a very small proportion of infected subjects develop adenocarcinoma. H. pylori causes a chronic gastritis that may last decades, and a multistep precancerous process is recognized for the most frequent histologic type of gastric adenocarcinoma: the intestinal type. The severity and long-term outcome of this infection is modulated by an increasing list of bacterial, host, and environmental factors, which interplay in a complex manner. Identification of individuals at high risk for gastric cancer that may enter a surveillance program and intervention during the precancerous process is the most suitable strategy for decreasing mortality due to this malignancy.
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Affiliation(s)
- Pelayo Correa
- Anne Potter Wilson Professor of Medicine, Vanderbilt University School of Medicine, Nashville
| | - M Blanca Piazuelo
- Research Instructor, Division of Gastroenterology, Department of Medicine, Vanderbilt University School of Medicine, Nashville
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