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Ibrahim ME. Epidemiology, pathogenicity, risk factors, and management of Helicobacter pylori infection in Saudi Arabia. BIOMOLECULES & BIOMEDICINE 2024; 24:440-453. [PMID: 37787623 PMCID: PMC11088898 DOI: 10.17305/bb.2023.9575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/22/2023] [Accepted: 10/02/2023] [Indexed: 10/04/2023]
Abstract
Helicobacter pylori (H. pylori) is a gastric microbial pathogen that infects approximately half of the global population. This bacterium significantly contributes to various gastroduodenal diseases, including chronic active gastritis, peptic ulcerations, and malignant transformations. This review focuses on epidemiology, pathogenicity, virulence genes, risk factors, and management of H. pylori infection, specifically within the context of Saudi Arabia. The results presented here are grounded in studies conducted in Saudi Arabia, contrasting with mere bibliographic reviews of findings from other countries. H. pylori infection has been observed in Saudi Arabia, with substantial differences in the prevalence, ranging between 10-96% among various studied populations. Several risk factors for H. pylori infection have been identified, encompassing socioeconomic status, medical history, personal hygiene, and behavioral practices. Among the virulence genes harbored by H. pylori, cytotoxin-associated gene A (cagA) and vacuolating cytotoxin (vacA) are most common, with their presence correlating with the pathogenicity and clinical manifestations of the associated diseases. A range of invasive and non-invasive diagnostic assays have been utilized to identify H. pylori infection, with their employment being influenced by factors like availability, cost, patient age, gastric symptoms, and the specifics of clinical information sought. While detection methods like the H. pylori stool antigen test and the urea breath test offer more accuracy and speed, culturing remains indispensable for determining the antimicrobial susceptibility profile. The emergence of resistant strains across varying regional settings poses a significant challenge to treatment endeavors, necessitating an assessment of local antimicrobial resistance rates prior to formulating treatment strategies. The findings of this review highlight the importance of continuous implementation of screening, control, and prevention of H. pylori infection to combat the spreading infection and other related complications.
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Affiliation(s)
- Mutasim E Ibrahim
- Department of Basic Medical Sciences, College of Medicine, University of Bisha, Bisha, Saudi Arabia
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2
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Wu H, Zhou Y, Huang Y. Accuracy of gastric nodule combined with rapid urease test prediction in diagnosing Helicobacter pylori infection in children. Eur J Clin Microbiol Infect Dis 2024; 43:481-487. [PMID: 38182925 DOI: 10.1007/s10096-023-04711-9] [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: 10/10/2023] [Accepted: 11/09/2023] [Indexed: 01/07/2024]
Abstract
BACKGROUND The diagnosis of Helicobacter pylori (H. pylori) infection in children remains challenging with the lack of a rapid, cost-effective, and highly accurate diagnostic method. Consequently, this study aimed to investigate the accuracy of the combination of gastric nodule and rapid urease test (RUT) as a diagnostic method for H. pylori infection in children. METHODS The study included participants who underwent a thorough examination, including gastroscopy, a 13C breath test, RUT, and pathological methylene blue staining, with the gold standard for diagnosing of H. pylori infection being a positive result from both pathological methylene blue staining and 13C breath test. The sensitivity, specificity, positive and negative predictive values, and accuracy of the diagnostic methods were calculated. RESULTS The accuracy of the different tests for H. pylori infection was evaluated in 2202 participants. A total of 730 (33.2%) children were diagnosed with H. pylori infection (pathological methylene blue staining and 13C breath test, both positive). Gastric nodule had a sensitivity of 87.1% and a specificity of 93.1%, whereas combining gastric nodule and RUT in parallel had the higher accuracy of 95.4%. The accuracy of gastric nodule diagnosis was higher in younger age groups and increased after excluding patients with a history of anti-H. pylori treatment. CONCLUSIONS The findings of this study suggest that gastric nodules, particularly when combined with RUT, can be a valuable predictor of H. pylori infection in children, offering a simple and feasible alternative to other invasive methods.
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Affiliation(s)
- Hailin Wu
- Children's Hospital of Fudan University, No. 399 Wanyuan Road, Minhang District, Shanghai, 201102, China
| | - Ying Zhou
- Children's Hospital of Fudan University, No. 399 Wanyuan Road, Minhang District, Shanghai, 201102, China.
| | - Ying Huang
- Children's Hospital of Fudan University, No. 399 Wanyuan Road, Minhang District, Shanghai, 201102, China.
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Helicobacter pylori Infection: Current Status and Future Prospects on Diagnostic, Therapeutic and Control Challenges. Antibiotics (Basel) 2023; 12:antibiotics12020191. [PMID: 36830102 PMCID: PMC9952126 DOI: 10.3390/antibiotics12020191] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/26/2022] [Accepted: 01/06/2023] [Indexed: 01/20/2023] Open
Abstract
Helicobacter pylori (H. pylori) infection, which affects approximately half of the world's population, remains a serious public health problem. As H. pylori infection leads to a number of gastric pathologies, including inflammation, gastroduodenal ulcers, and malignancies, early detection and treatment are crucial to preventing the spread of the infection. Multiple extragastric complications, such as iron deficiency anaemia, immune thrombocytopenic purpura, vitamin B12 deficiency, diabetes mellitus, cardiovascular diseases, and certain neurological disorders, have also been linked to H. pylori infection. An awareness of H. pylori and associated health hazards is necessary to minimize or even eradicate the infection. Therefore, there is an urgent need to raise the standards for the currently employed diagnostic, eradication, alternative treatment strategies. In addition, a brief overview of traditional and cutting-edge approaches that have proven effective in identifying and managing H. pylori is needed. Based on the test and laboratory equipment available and patient clinical characteristics, the optimal diagnostic approach requires weighing several factors. The pathophysiology and pathogenic mechanisms of H. pylori should also be studied, focusing more on the infection-causing virulence factors of this bacterium. Accordingly, this review aims to demonstrate the various diagnostic, pathophysiological, therapeutic, and eradication tactics available for H. pylori, emphasizing both their advantages and disadvantages. Invasive methods (such as quick urease testing, biopsy, or culture) or noninvasive methods (such as breath tests, stool investigations, or serological tests) can be used. We also present the most recent worldwide recommendations along with scientific evidence for treating H. pylori. In addition to the current antibiotic regimens, alternative therapies may also be considered. It is imperative to eradicate the infections caused by H. pylori as soon as possible to prevent problems and the development of stomach cancer. In conclusion, significant advances have been made in identifying and treating H. pylori. To improve eradication rates, peptide mass fingerprinting can be used as a diagnostic tool, and vaccines can also eliminate the infection.
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Abdulrahman AT, Ismail SI, Hussain SS, Ahmed NJ, Hassan AN. Detection of Helicobacter Pylori’s Virulence Gene (UreA) and its Influence on the Result of Rapid Urease Test (RUT). AL-MUSTANSIRIYAH JOURNAL OF SCIENCE 2022. [DOI: 10.23851/mjs.v33i4.1152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
UreA is an important virulence factor of Helicobacter pylori that, along with UreB and UreC, produces urease. Urease enzyme helps the bacterium to colonize the human stomach through metabolizing urea in order to neutralize the gastric environment. The current study aimed to detect the prevalence of the H. pylori’s ureA virulence factor gene, and to investigate the influence of this gene on the result of the rapid urease test (RUT). Eighty stomach biopsy samples were isolated from participants who were suspected to be infected with H. pylori in Erbil city. Participants were 36 males and 44 females, aged between 18 and 67 years. The results showed that 42 (52.5%) of the participants were positive for H. pylori when tested by RUT, while 59 (73.8%) of the patients showed positive H. pylori infection when tested by polymerase chain reaction (PCR) targeting the 16S rRNA gene. The results of the PCR test based on the ureA gene revealed that 42 (52.5%) of the samples were positive. The important finding of this research is the presence of 100% compatibility between positive samples of RUT and ureA genes. It can be concluded from this study that a person may be infected with H. pylori, but the RUT test fails to detect the infection if the bacteria lack the ureA gene, indicating a direct impact of this gene on the result of RUT, which is a defect of RUT.
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Bhandari T, Laghu U, Ratna P, Shrestha R. Helicobacter Pylori Infection among Patients Attending the Gastroenterology Department in Tertiary Care Hospital, Kathmandu, Nepal. Int J Microbiol 2022; 2022:1508473. [PMID: 36406905 PMCID: PMC9671715 DOI: 10.1155/2022/1508473] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/13/2022] [Accepted: 10/17/2022] [Indexed: 07/27/2023] Open
Abstract
Helicobacter pylori is one of the most pathogenic organisms that cause gastritis, peptic ulcer, gastric adenocarcinoma, and mucosa-associated lymphoid tissue (MALT) lymphoma in humans. The main aim of this study was to determine the H. pylori infection among patients undergoing upper GI endoscopy and to compare the efficacy of the diagnostic method of H. pylori infection including invasive tests (biopsy-based tests like the rapid urease test (RUT), direct smear, and culture) and the noninvasive test (HpSA). A total of 100 stool samples and 200 gastric biopsy specimens were collected (2 samples from each patient) from June to November 2019. Stool samples were processed for the detection of an H. pylori stool antigen (HpSA) by a kit method. One biopsy specimen was processed for the RUT, and another was transported to the laboratory in an Eppendorf tube containing normal saline for preparation of the smear and culture. Out of 100 participants, 26% were found to be H. pylori positive by the RUT, 11% by the direct smear, 6% by the culture, and 17% by the stool antigen test. The prevalence of H. pylori infection was found to be 14%, considering at least two of the three biopsy-based tests that gave positive results. H. pylori infection was found to be higher in the age group of 46-55 years. The overall prevalence of H. pylori infection was higher in gastric ulcer cases, followed by erosive pangastritis and gastroduodenitis. Tea drinking habits and the frequency of meal consumption more than twice a day were found to be significantly associated with H. pylori infection (P < 0.05). Hence, the RUT was found to be more efficient than the direct smear and the culture method for finding H. pylori in the biopsy sample. However, none of these methods can be considered to be the gold standard alone. Thus, the RUT combined with other tests is preferable for the detection of H. pylori.
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Affiliation(s)
- Tulasi Bhandari
- Department of Microbiology, St. Xavier's College, Tribhuvan University, Kathmandu, Nepal
| | - Ujjwal Laghu
- Grande International Hospital, Dhapasi, Kathmandu, Nepal
| | - Prem Ratna
- Grande International Hospital, Dhapasi, Kathmandu, Nepal
| | - Rajani Shrestha
- Department of Microbiology, St. Xavier's College, Tribhuvan University, Kathmandu, Nepal
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Elnosh M, Altayb H, Hamedelnil Y, Elshareef W, Abugrain A, Osman E, Albasha A, Abdelhamid A, Moglad E, AbdAlla A, Ismail A. Comparison of invasive histological and molecular methods in the diagnosis of Helicobacter pylori from gastric biopsies of Sudanese patients: a cross-sectional study. F1000Res 2022; 11:113. [PMID: 35811791 PMCID: PMC9214269 DOI: 10.12688/f1000research.75873.2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/06/2022] [Indexed: 11/20/2022] Open
Abstract
Background: The continuous rise in the number of patients suffering from Helicobacter pylori is probably due to the changes in modern life. Nowadays, patients suffering from gastrointestinal problems are diagnosed through invasive and non-invasive techniques. The choice of a diagnostic test is influenced by factors such as the tests' sensitivity and specificity, the clinical conditions, and the cost-effectiveness of the testing strategy. This study aimed to compare molecular detection methods of H. pylori by polymerase chain reaction (PCR) targeting the 16S rRNA, ureA and glmM genes with an invasive histopathological technique. Methods: 290 gastric biopsies were collected using gastrointestinal endoscopy from patients with gastritis symptoms in different hospitals in Khartoum state. Two gastric biopsies were collected from each patient for PCR and histopathology. Results: A total of 103 (35.5%) samples were positive by histopathological examination, 88 (30.3%) by 16S rRNA, 39 (13.4%) by glmM gene, and 56 (19.3%) by ureA gene. The highest sensitivity was observed in 16S rRNA (46.6%), followed by glmM (24.3%) and ureA (23.3%). While the best specificity was observed in glmM gene (92.5%), followed by ureA (82.3%) and 16S rRNA (78.6%). Conclusion: PCR test targeting the 16S rRNA gene exhibited the best results for molecular detection of H. pylori compared to other genes.
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Affiliation(s)
- Maram Elnosh
- Microbiology, College of Medical Laboratory Science, Sudan University of Science and Technology, Khartoum, State, 11111, Sudan
| | - Hisham Altayb
- Biochemistry, Faculty of Sciences, King Abdulaziz University, Jeddah, State, 21452, Saudi Arabia
| | - Yousif Hamedelnil
- Microbiology, College of Medical Laboratory Science, Sudan University of Science and Technology, Khartoum, State, 11111, Sudan
| | - Wafa Elshareef
- Histopathology, The National Public Health Laboratory, Khartoum, State, 11111, Sudan
| | - Aliaa Abugrain
- Histopathology, College of Medical Laboratory Science, Sudan University of Science and Technology, Khartoum, State, 11111, Sudan
| | - Esraa Osman
- Microbiology, College of Medical Laboratory Science, Sudan University of Science and Technology, Khartoum, State, 11111, Sudan
| | - Aalaa Albasha
- Microbiology, College of Medical Laboratory Science, Sudan University of Science and Technology, Khartoum, State, 11111, Sudan
| | - Abdelhamid Abdelhamid
- Microbiology, College of Medical Laboratory Science, Sudan University of Science and Technology, Khartoum, State, 11111, Sudan
| | - Ehssan Moglad
- Pharmaceutics, College of Pharmacy, Prince Sattam bin Abdulaziz University, Alkharj, State, 11942, Saudi Arabia
| | - Ahmed AbdAlla
- Parasitology and Medical Entomology, College of Medical Laboratory Science, Sudan University of Science and Technology, Khartoum, State, 11111, Sudan
| | - Ahmed Ismail
- Microbiology, College of Medical Laboratory Science, Sudan University of Science and Technology, Khartoum, State, 11111, Sudan
- Public Health Department, Ministry of Public Health, Doha, State, 122104, Qatar
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Elnosh M, Altayb H, Hamedelnil Y, Elshareef W, Abugrain A, Osman E, Albasha A, Abdelhamid A, Moglad E, AbdAlla A, Ismail A. Comparison of invasive histological and molecular methods in the diagnosis of Helicobacter pylori from gastric biopsies of Sudanese patients: a cross-sectional study. F1000Res 2022; 11:113. [PMID: 35811791 PMCID: PMC9214269 DOI: 10.12688/f1000research.75873.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/06/2022] [Indexed: 02/25/2024] Open
Abstract
Background: The continuous rise in the number of patients suffering from Helicobacter pylori is probably due to the changes in modern life. Nowadays, patients suffering from gastrointestinal problems are diagnosed through invasive and non-invasive techniques. The choice of a diagnostic test is influenced by factors such as the tests' sensitivity and specificity, the clinical conditions, and the cost-effectiveness of the testing strategy. This study aimed to compare molecular detection methods of H. pylori by polymerase chain reaction (PCR) targeting the 16S rRNA, ureA and glmM genes with an invasive histopathological technique. Methods: 290 gastric biopsies were collected using gastrointestinal endoscopy from patients with gastritis symptoms in different hospitals in Khartoum state. Two gastric biopsies were collected from each patient for PCR and histopathology. Results: A total of 103 (35.5%) samples were positive by histopathological examination, 88 (30.3%) by 16S rRNA, 39 (13.4%) by glmM gene, and 56 (19.3%) by ureA gene. The highest sensitivity was observed in 16S rRNA (46.6%), followed by glmM (24.3%) and ureA (23.3%). While the best specificity was observed in glmM gene (92.5%), followed by ureA (82.3%) and 16S rRNA (78.6%). Conclusion: PCR test targeting the 16S rRNA gene exhibited the best results for molecular detection of H. pylori compared to other genes.
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Affiliation(s)
- Maram Elnosh
- Microbiology, College of Medical Laboratory Science, Sudan University of Science and Technology, Khartoum, State, 11111, Sudan
| | - Hisham Altayb
- Biochemistry, Faculty of Sciences, King Abdulaziz University, Jeddah, State, 21452, Saudi Arabia
| | - Yousif Hamedelnil
- Microbiology, College of Medical Laboratory Science, Sudan University of Science and Technology, Khartoum, State, 11111, Sudan
| | - Wafa Elshareef
- Histopathology, The National Public Health Laboratory, Khartoum, State, 11111, Sudan
| | - Aliaa Abugrain
- Histopathology, College of Medical Laboratory Science, Sudan University of Science and Technology, Khartoum, State, 11111, Sudan
| | - Esraa Osman
- Microbiology, College of Medical Laboratory Science, Sudan University of Science and Technology, Khartoum, State, 11111, Sudan
| | - Aalaa Albasha
- Microbiology, College of Medical Laboratory Science, Sudan University of Science and Technology, Khartoum, State, 11111, Sudan
| | - Abdelhamid Abdelhamid
- Microbiology, College of Medical Laboratory Science, Sudan University of Science and Technology, Khartoum, State, 11111, Sudan
| | - Ehssan Moglad
- Pharmaceutics, College of Pharmacy, Prince Sattam bin Abdulaziz University, Alkharj, State, 11942, Saudi Arabia
| | - Ahmed AbdAlla
- Parasitology and Medical Entomology, College of Medical Laboratory Science, Sudan University of Science and Technology, Khartoum, State, 11111, Sudan
| | - Ahmed Ismail
- Microbiology, College of Medical Laboratory Science, Sudan University of Science and Technology, Khartoum, State, 11111, Sudan
- Public Health Department, Ministry of Public Health, Doha, State, 122104, Qatar
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Management of Helicobacter pylori infection in the pediatric age. An Pediatr (Barc) 2021; 95:383.e1-383.e9. [PMID: 34642127 DOI: 10.1016/j.anpede.2021.05.004] [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: 03/23/2021] [Accepted: 05/21/2021] [Indexed: 11/22/2022] Open
Abstract
The management of Helicobacter pylori infection in children is a consistent problem in clinical practice. Over the years, many questions have been raised regarding symptoms associated with the infection, the diagnostic methods and type of treatment. What is most controversial is determining the criteria that enable us to initiate and carry out the study in children. In the last 10 years, pediatricians have followed the joint ESPGHAN/NASPGHAN guidelines published in 2011 and updated in 2017 in the management of H. pylori in children. This document aims to unify the study indication criteria as well as the diagnosis and treatment recommendations for H. pylori infection in children and adolescents, so they can be used in both Primary and Hospital care.
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Meliț LE, Mărginean CO, Săsăran MO, Mocan S, Ghiga DV, Bogliş A, Duicu C. Innate immunity – the hallmark of Helicobacter pylori infection in pediatric chronic gastritis. World J Clin Cases 2021; 9:6686-6697. [PMID: 34447815 PMCID: PMC8362532 DOI: 10.12998/wjcc.v9.i23.6686] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 06/14/2021] [Accepted: 07/05/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Innate immunity was found to be associated with both persistence of Helicobacter pylori (H. pylori) infection and increased risk of gastric cancer.
AIM To identify the risk factors associated with H. pylori infection and to establish the role of TLR9 rs352140 in suppressing or promoting inflammation related to this infection in children.
METHODS We performed a study of 155 children with digestive symptoms, who were divided into two groups according to the histopathological exam: Group 1 – 48 children with H. pylori-induced chronic gastritis, and Group 2 – control group.
RESULTS Rural area and poor living conditions were significantly associated with H. pylori chronic gastritis (P = 0.0042/P < 0.0001). Both positive immunoglobulin A anti H. pylori and the rapid urease test were significantly associated with H. pylori infection (P < 0.0001). Significantly higher values of leukocytes and neutrophils within the peripheral blood were found in children with H. pylori chronic gastritis (P = 0.111/P = 0.284). We found a significant positive correlation between the variant TT genotype of TLR9 rs352140 polymorphism and both leucocytes and neutrophils (P = 0.0225/P = 0.0292).
CONCLUSION Variant TT genotype carriers of the TLR9 rs352140 gene polymorphism might have a more severe degree of inflammation.
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Affiliation(s)
- Lorena Elena Meliț
- Department of Pediatrics I, “George Emil Palade” University of Medicine, Pharmacy, Sciences and Technology Târgu Mureș, Târgu Mureș 540136, Romania
| | - Cristina Oana Mărginean
- Department of Pediatrics I, “George Emil Palade” University of Medicine, Pharmacy, Sciences and Technology Târgu Mureș, Târgu Mureș 540136, Romania
| | - Maria Oana Săsăran
- Department of Pediatrics III, “George Emil Palade” University of Medicine, Pharmacy, Sciences and Technology Târgu Mureș, Târgu Mureș 540136, Romania
| | - Simona Mocan
- Department of Pathology, Emergency County Hospital Târgu Mureș, Târgu Mureș 540139, Romania
| | - Dana Valentina Ghiga
- Scientific Medical Research Methodology, “George Emil Palade” University of Medicine, Pharmacy, Sciences and Technology Târgu Mureș, Târgu Mureș 540136, Romania
| | - Alina Bogliş
- Department of Genetics, Center for Advanced Medical and Pharmaceutical Research, “George Emil Palade” University of Medicine, Pharmacy, Sciences and Technology Târgu Mureș, Târgu Mureș 540136, Romania
| | - Carmen Duicu
- Department of Pediatrics I, “George Emil Palade” University of Medicine, Pharmacy, Sciences and Technology Târgu Mureș, Târgu Mureș 540136, Romania
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Galicia Poblet G, Alarcón Cavero T, Alonso Pérez N, Borrell Martínez B, Botija Arcos G, Cilleruelo Pascual ML, González Martín LM, Hernández Hernández A, Martínez Escribano B, Ortola Castells X, Rizo Pascual J, Urruzuno Tellería P, Vegas Álvarez AM. [Management of Helicobacter pylori infection in the pediatric age]. An Pediatr (Barc) 2021; 95:S1695-4033(21)00202-2. [PMID: 34183279 DOI: 10.1016/j.anpedi.2021.05.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/17/2021] [Accepted: 05/21/2021] [Indexed: 12/12/2022] Open
Abstract
The management of Helicobacter pylori infection in children is a consistent problem in clinical practice. Over the years, many questions have been raised regarding symptoms associated with the infection, the diagnostic methods and type of treatment. What is most controversial is determining the criteria that enable us to initiate and carry out the study in children. In the last 10 years, pediatricians have followed the joint ESPGHAN/NASPGHAN guidelines published in 2011 and updated in 2017 in the management of H.pylori in children. This document aims to unify the study indication criteria as well as the diagnosis and treatment recommendations for H.pylori infection in children and adolescents, so they can be used in both Primary and Hospital care.
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Affiliation(s)
- Gonzalo Galicia Poblet
- Servicio de Pediatría, Hospital Universitario de Guadalajara. Sociedad Española de Gastroenterología, Hepatología y Nutrición Pediátrica (SEGHNP), Guadalajara, España.
| | - Teresa Alarcón Cavero
- Servicio de Microbiología, Hospital Universitario La Princesa. Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica (SEIMC), Madrid, España
| | - Natalia Alonso Pérez
- Servicio de Pediatría, Hospital Universitario Infanta Cristina. Sociedad Española de Gastroenterología, Hepatología y Nutrición Pediátrica (SEGHNP), Parla, Madrid, España
| | - Belén Borrell Martínez
- Servicio de Pediatría, Hospital Universitario Severo Ochoa. Sociedad Española de Gastroenterología, Hepatología y Nutrición Pediátrica (SEGHNP), Leganés, Madrid, España
| | - Gonzalo Botija Arcos
- Servicio de Pediatría, Hospital Universitario Fundación de Alcorcón. Sociedad Española de Gastroenterología, Hepatología y Nutrición Pediátrica (SEGHNP), Alcorcón, Madrid, España
| | - Maria Luz Cilleruelo Pascual
- Servicio de Pediatría, Hospital Universitario Puerta de Hierro. Sociedad Española de Gastroenterología, Hepatología y Nutrición Pediátrica (SEGHNP), Madrid, España
| | - Leticia María González Martín
- Pediatría de Atención Primaria, Centro de Salud Segovia II. Sociedad Española de Pediatría de Atención Primaria (AEPap), Segovia, España
| | - Anselmo Hernández Hernández
- Pediatría de Atención Primaria, Centro de Salud de Tacoronte. Sociedad Española de Pediatría Extrahospitalaria y Atención Primaria (SEPEAP), Tacoronte, Santa Cruz de Tenerife, España
| | - Beatriz Martínez Escribano
- Servicio de Pediatría, Hospital Universitario de Fuenlabrada. Sociedad Española de Gastroenterología, Hepatología y Nutrición Pediátrica (SEGHNP), Fuenlabrada, Madrid, España
| | - Xenia Ortola Castells
- Servicio de Gastroenterología, Fundació Hospital de Nens de Barcelona. Pediatría de Atención Primaria, Equipo de Pediatría Padre Claret. Sociedad Española de Gastroenterología, Hepatología y Nutrición Pediátrica (SEGHNP), Barcelona, España
| | - Jana Rizo Pascual
- Servicio de Pediatría, Hospital Universitario Infanta Sofía. Sociedad Española de Gastroenterología, Hepatología y Nutrición Pediátrica (SEGHNP), San Sebastián de los Reyes, Madrid, España
| | - Pedro Urruzuno Tellería
- Unidad de Gastroenterología, Hepatología y Nutrición Pediátrica, Hospital Universitario 12 de Octubre. Sociedad Española de Gastroenterología, Hepatología y Nutrición Pediátrica (SEGHNP), Madrid, España
| | - Ana María Vegas Álvarez
- Servicio de Pediatría, Hospital Universitario Río Hortega. Sociedad Española de Gastroenterología, Hepatología y Nutrición Pediátrica (SEGHNP), Valladolid, España
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Suárez-Jaramillo A, Baldeón ME, Prado B, Fornasini M, Cohen H, Flores N, Salvador I, Cargua O, Realpe J, Cárdenas PA. Duodenal microbiome in patients with or without Helicobacter pylori infection. Helicobacter 2020; 25:e12753. [PMID: 32896972 DOI: 10.1111/hel.12753] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/06/2020] [Accepted: 07/25/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Intestinal microbiota are recognized as an organ with important physiological functions whose alterations have been associated with common diseases including inflammatory intestinal conditions, malnutrition, type-2 diabetes, and cardiovascular diseases. The composition and function of the microbiota in the distal part of the intestine has been mainly described, while there is limited information on the small intestine microbiota. The objective of the present study was to describe the duodenal microbiome in individuals with dyspepsia in the presence or absence of Helicobacter pylori gastric infection. MATERIALS AND METHODS Thirty-eight biopsies from the proximal duodenum of uninfected and 37 from H pylori-infected individuals were analyzed. Microbiota composition was assessed by PCR amplification and sequencing of 16S rRNA and ITS genes; sequences were analyzed with QIIME2. RESULTS AND CONCLUSIONS At the phyla level, Proteobacteria, Bacteroidetes, Firmicutes, Actinobacteria, and Fusobacteria were predominant in the mucosal associated duodenal microbiota (MAM); at the genera level, we observed the predominance of Ralstonia, Streptococcus, Pseudomonas, Haemophilus, Herbaspirillum, Neisseria, and Veillonella. Microbiota α-diversity was higher in H pylori-infected individuals than in non-infected ones. In terms of β-diversity metrics, there was a statistically significant difference between groups. Also, relative abundance of Haemophilus, Neisseria, Prevotella pallens, Prevotella 7, and Streptococcus was greater in H pylori-infected patients. In infected patients, several types of H pylori were present in duodenal MAM. Finally, the majority of duodenal samples had fungi sequences; the most common taxa observed were Recurvomyces followed by Ascomycota and Basidiomycota.
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Affiliation(s)
| | - Manuel E Baldeón
- Facultad de Ciencias de la Salud Eugenio Espejo, Centro de Investigación Biomédica, Universidad Tecnológica Equinoccial, Quito, Ecuador
| | - Belén Prado
- Instituto de Microbiología, COCIBA, Universidad San Francisco de Quito, Quito, Ecuador
| | - Marco Fornasini
- Facultad de Ciencias de la Salud Eugenio Espejo, Centro de Investigación Biomédica, Universidad Tecnológica Equinoccial, Quito, Ecuador
| | - Henry Cohen
- Facultad de Medicina, Universidad de la República Uruguay, Montevideo, Uruguay
| | - Nancy Flores
- Facultad de Ciencias de la Salud Eugenio Espejo, Centro de Investigación Biomédica, Universidad Tecnológica Equinoccial, Quito, Ecuador
| | - Iván Salvador
- Facultad de Ciencias de la Salud Eugenio Espejo, Centro de Investigación Biomédica, Universidad Tecnológica Equinoccial, Quito, Ecuador
| | - Oswaldo Cargua
- Facultad de Ciencias de la Salud Eugenio Espejo, Centro de Investigación Biomédica, Universidad Tecnológica Equinoccial, Quito, Ecuador
| | - José Realpe
- Facultad de Ciencias de la Salud Eugenio Espejo, Centro de Investigación Biomédica, Universidad Tecnológica Equinoccial, Quito, Ecuador
| | - Paul A Cárdenas
- Instituto de Microbiología, COCIBA, Universidad San Francisco de Quito, Quito, Ecuador
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Abstract
Helicobacter pylori infection in children and adolescents differs in comparison to adults with respect to epidemiology, host responses, and disease manifestations. Furthermore, treatment options are limited in this population and antibiotic resistance rates continue to increase. Therefore, ongoing research is vital to understand disease pathogenesis and provide optimal management of children with infection. This review summarizes relevant publications from April 2019 to March 2020. Similar to adults, recent studies show a decreasing prevalence of infection in the pediatric population. Studies of pathogenesis investigated serum immune responses and the potential inverse association of infection and allergy. Several studies investigated the effect of H pylori and related inflammation on the gut microbiome. The recommendation of endoscopy-based testing to identify the cause of symptoms and not just H pylori, reserving noninvasive UBT or stool antigen tests for post-eradication follow-up, was supported by the current literature.
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Affiliation(s)
- Ji-Hyun Seo
- Department of Pediatrics, Gyeongsang National Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju, Korea
| | - Kristen Bortolin
- Department of Paediatrics, Division of Gastroenterology Hepatology and Nutrition, University of Toronto, SickKids, Toronto, Canada
| | - Nicola L Jones
- Departments of Paediatrics and Physiology, Division of Gastroenterology Hepatology and Nutrition, Cell Biology Program, SickKids Research Institute, University of Toronto, SickKids, Toronto, Canada
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13
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Mišak Z, Hojsak I, Homan M. Review: Helicobacter pylori in pediatrics. Helicobacter 2019; 24 Suppl 1:e12639. [PMID: 31486243 DOI: 10.1111/hel.12639] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 06/25/2019] [Indexed: 12/15/2022]
Abstract
Despite a decrease in the prevalence of Helicobacter pylori infection, it still poses a significant health burden worldwide. This review summarizes important pediatric studies on H pylori published from April 2018 to March 2019. Epidemiologic studies have reported different prevalences in different parts of the world and have mainly confirmed traditional risk factors. Several studies on pathophysiology attempted to identify risk markers in childhood for gastric cancer development later in life. One of the most interesting studies evaluated the relationship between eosinophilic esophagitis and H pylori infection; however, an inverse relationship was not confirmed. The high resistance of H pylori and, consequently, low eradication rates, is still a major concern and susceptibility testing before treatment has again been highlighted. Potassium-competitive acid blockers are promising new acid-suppressant drugs but their role in H pylori eradication schemes is still to be determined.
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Affiliation(s)
- Zrinjka Mišak
- Referral Center for Pediatric Gastroenterology and Nutrition, Children's Hospital Zagreb, Zagreb, Croatia.,University of Zagreb School of Medicine, Zagreb, Croatia
| | - Iva Hojsak
- Referral Center for Pediatric Gastroenterology and Nutrition, Children's Hospital Zagreb, Zagreb, Croatia.,University of Zagreb School of Medicine, Zagreb, Croatia.,School of Medicine, University J. J. Strossmayer, Osijek, Croatia
| | - Matjaž Homan
- Department of Gastroenterology, Hepatology, and Nutrition, Faculty of Medicine, University Children's Hospital, University of Ljubljana, Ljubljana, Slovenia
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