1
|
Smith SM, Boyle B, Buckley M, Costigan C, Doyle M, Farrell R, Ismail MS, Kevans D, Nugent S, O’Connor A, O’Morain C, Parihar V, Ryan C, McNamara D. The second Irish Helicobacter pylori Working Group consensus for the diagnosis and treatment of Helicobacter pylori infection in adult patients in Ireland. Eur J Gastroenterol Hepatol 2024; 36:1000-1009. [PMID: 38829956 PMCID: PMC11198963 DOI: 10.1097/meg.0000000000002796] [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: 01/25/2024] [Accepted: 05/08/2024] [Indexed: 06/05/2024]
Abstract
BACKGROUND There has been an increase in resistance to many of the antimicrobials used to treat Helicobacter pylori ( H. pylori ) nationally and internationally. Primary clarithromycin resistance and dual clarithromycin and metronidazole resistance are high in Ireland. These trends call for an evaluation of best-practice management strategies. OBJECTIVE The objective of this study was to revise the recommendations for the management of H. pylori infection in adult patients in the Irish healthcare setting. METHODS The Irish H. pylori working group (IHPWG) was established in 2016 and reconvened in 2023 to evaluate the most up-to-date literature on H. pylori diagnosis, eradication rates and antimicrobial resistance. The 'GRADE' approach was then used to rate the quality of available evidence and grade the resulting recommendations. RESULTS The Irish H. pylori working group agreed on 14 consensus statements. Key recommendations include (1) routine antimicrobial susceptibility testing to guide therapy is no longer recommended other than for clarithromycin susceptibility testing for first-line treatment (statements 6 and 9), (2) clarithromycin triple therapy should only be prescribed as first-line therapy in cases where clarithromycin susceptibility has been confirmed (statement 9), (3) bismuth quadruple therapy (proton pump inhibitor, bismuth, metronidazole, tetracycline) is the recommended first-line therapy if clarithromycin resistance is unknown or confirmed (statement 10), (4) bismuth quadruple therapy with a proton pump inhibitor, levofloxacin and amoxicillin is the recommended second-line treatment (statement 11) and (5) rifabutin amoxicillin triple therapy is the recommend rescue therapy (statement 12). CONCLUSION These recommendations are intended to provide the most relevant current best-practice guidelines for the management of H. pylori infection in adults in Ireland.
Collapse
Affiliation(s)
| | - Breida Boyle
- Department of Clinical Microbiology, St. James’s Hospital, Dublin
| | - Martin Buckley
- Department of Gastroenterology, Mercy University Hospital, Cork
| | - Conor Costigan
- School of Medicine, Trinity College Dublin
- Department of Gastroenterology, Tallaght University Hospital, Dublin
| | - Maeve Doyle
- Department of Microbiology, University Hospital Waterford, Waterford
| | - Richard Farrell
- Department of Gastroenterology, Connolly Hospital, RCSI, Dublin
| | | | - David Kevans
- School of Medicine, Trinity College Dublin
- Department of Gastroenterology, St. James’s Hospital, Dublin
| | - Sean Nugent
- Department of Gastroenterology, Whitfield Clinic, Waterford
| | - Anthony O’Connor
- School of Medicine, Trinity College Dublin
- Department of Gastroenterology, Tallaght University Hospital, Dublin
| | | | - Vikrant Parihar
- Department of Gastroenterology, Letterkenny University Hospital
| | - Cristín Ryan
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin, Ireland
| | - Deirdre McNamara
- School of Medicine, Trinity College Dublin
- Department of Gastroenterology, Tallaght University Hospital, Dublin
| |
Collapse
|
2
|
Rosu OM, Gimiga N, Popescu R, Ioniuc I, Rusu CD, Clipa T, Florea DM, Pleșca DA, Nemtoi A, Tataranu E, Stefanescu G, Diaconescu S. Pattern of Primary Resistance of Helicobacter pylori to Clarithromycin among Pediatric Patients from North-Eastern Romania. CHILDREN (BASEL, SWITZERLAND) 2023; 10:1752. [PMID: 38002843 PMCID: PMC10670121 DOI: 10.3390/children10111752] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/24/2023] [Accepted: 10/26/2023] [Indexed: 11/26/2023]
Abstract
BACKGROUND Helicobacter pylori antibiotic resistance has increased worldwide and affects the effectiveness of current therapies. The recommended first-line empiric treatment should be tailored to the local clarithromycin resistance rate. This study aimed to determine the pediatric patient profile and rate of clarithromycin resistance for patients diagnosed with Helicobacter pylori by gastric biopsy. METHODS We studied 84 positive gastric samples for Helicobacter pylori. Positive results were confirmed by a rapid urease test and histopathological examination, with the type of gastritis established according to the Sydney System. Gastric biopsy samples were stored in RNA saver. Clarithromycin resistance was determined by a real-time polymerase chain reaction-based molecular assay after RNA-DNA extraction. RESULTS Of the 84 biopsy samples analyzed, 35 (41.6%) were resistant to clarithromycin. Clarithromycin resistance was found mainly in girls (80%) with a mean age of 15 years (range 6-17 years). The history of prior exposure to clarithromycin was 91.6%. The concordance between the histopathological examination and the PCR test was 100%. CONCLUSIONS One in 2.4 children infected with Helicobacter pylori had a strain resistant to clarithromycin. This resistant strain may be a reason for treatment failure in Romanian children, yet this is uninvestigated. The high rate of bacterial resistance to this antibiotic among children indicates the need for susceptibility testing before therapy.
Collapse
Affiliation(s)
- Oana-Maria Rosu
- Doctoral School, “George Emil Palade” University of Medicine, Pharmacy, Science, and Technology of Targu Mures, 38 Gheorghe Marinescu Str., 540139 Targu Mures, Romania
| | - Nicoleta Gimiga
- Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 16 Universitatii Str., 700115 Iasi, Romania
| | - Roxana Popescu
- Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 16 Universitatii Str., 700115 Iasi, Romania
| | - Ileana Ioniuc
- Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 16 Universitatii Str., 700115 Iasi, Romania
| | - Carmen Daniela Rusu
- Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 16 Universitatii Str., 700115 Iasi, Romania
| | - Tatiana Clipa
- Medical Genetics Department, “Cuza Voda” Clinical Hospital of Obstetrics and Gynecology, 34 Cuza Voda Str., 700038 Iasi, Romania
| | - Diana-Maria Florea
- Medical Genetics Department, “Cuza Voda” Clinical Hospital of Obstetrics and Gynecology, 34 Cuza Voda Str., 700038 Iasi, Romania
| | - Doina-Anca Pleșca
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 21 Dionisie Lupu Str., 020021 Bucharest, Romania
| | - Alexandru Nemtoi
- Faculty of Medicine and Biological Sciences, “Stefan cel Mare” University of Suceava, 13 Universitatii Str., 720229 Suceava, Romania
| | - Elena Tataranu
- Faculty of Medicine and Biological Sciences, “Stefan cel Mare” University of Suceava, 13 Universitatii Str., 720229 Suceava, Romania
| | - Gabriela Stefanescu
- Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 16 Universitatii Str., 700115 Iasi, Romania
| | - Smaranda Diaconescu
- Faculty of Medicine, “Titu Maiorescu” University of Medicine, 67A Gheorghe Petrascu Str., 031592 Bucharest, Romania
| |
Collapse
|
3
|
Syam AF, Miftahussurur M, Makmun D, Abdullah M, Rani AA, Siregar GA, Simadibrata M, Zubir N, Dewa Nyoman Wibawa I, Purnomo HD, Manan C, Djojoningrat D, Fauzi A, Renaldi K, Maulahela H, Utari AP, Pribadi RR, Muzellina VN, Nursyirwan SA, Idrus MF, Ruswhandi R, Sugihartono T, Bestari MB, Bayupurnama P, Pramana TY, Wibowo BP, Bakry AF, Akil F, Parewangi AML, Widita H, Mariadi IK, Murti IS, Yusuf AI, Arles A, Yusuf F, Waleleng BJ, Abimanyu A, Mulyadi Y, Lucida MI, Rezkhita YAA, Alfaray RI, Yamaoka Y. Management of dyspepsia and Helicobacter pylori infection: the 2022 Indonesian Consensus Report. Gut Pathog 2023; 15:25. [PMID: 37217981 DOI: 10.1186/s13099-023-00551-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 05/02/2023] [Indexed: 05/24/2023] Open
Abstract
Dyspepsia still becomes a major challenge in upper gastrointestinal disease in Indonesia. This disease often correlated with Helicobacter pylori infection. However, the prevalence of this bacterium is generally low in Indonesia. Therefore, several considerations should be taken into consideration during the management of dyspepsia and H. pylori infection. "Management of dyspepsia and H. pylori infection in Indonesia: The Indonesian consensus report" comprises information gathered from 22 gastroenterology centers across Indonesia. The experts gathered to evolve a consensus, that consists of the statements, grades of recommendations, evidence levels, and rationales for the dyspepsia and H. pylori infection management for daily clinical practice. The report explains several aspects from the updated epidemiology information to comprehensive management therapy. After the experts worked together on all statements in the recommendations, the results are presented with the final agreement as a consensus to help clinicians in understanding, diagnosing, and treating dyspepsia and H. pylori infection patients in daily clinical practice in Indonesia.
Collapse
Affiliation(s)
- Ari Fahrial Syam
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine-Cipto Mangunkusumo Teaching Hospital, University of Indonesia, Jakarta, Indonesia.
| | - Muhammad Miftahussurur
- Division of Gastroentero-Hepatology, Department of Internal Medicine, Faculty of Medicine-Dr. Soetomo Teaching Hospital, Universitas Airlangga, Surabaya, Indonesia.
- Helicobacter Pylori and Microbiota Study Group, Institute of Tropical Disease, Universitas Airlangga, Surabaya, Indonesia.
| | - Dadang Makmun
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine-Cipto Mangunkusumo Teaching Hospital, University of Indonesia, Jakarta, Indonesia
| | - Murdani Abdullah
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine-Cipto Mangunkusumo Teaching Hospital, University of Indonesia, Jakarta, Indonesia
| | - Abdul Aziz Rani
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine-Cipto Mangunkusumo Teaching Hospital, University of Indonesia, Jakarta, Indonesia
| | - Gontar Alamsyah Siregar
- Division of Gastroenterohepatology, Department of Internal Medicine, Adam Malik General Hospital/Faculty of Medicine, Sumatra Utara University, Medan, Indonesia
| | - Marcellus Simadibrata
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine-Cipto Mangunkusumo Teaching Hospital, University of Indonesia, Jakarta, Indonesia
| | - Nasrul Zubir
- Division of Gastroenterohepatology, Department of Internal Medicine, M. Djamil General Hospital/Faculty of Medicine, Andalas University, Padang, Indonesia
| | - I Dewa Nyoman Wibawa
- Division of Gastroenterohepatology, Department of Internal Medicine, Udayana University/Sanglah General Hospital, Bali, Denpasar, Indonesia
| | - Hery Djagat Purnomo
- Division of Gastroenterohepatology, Department of Internal Medicine, Kariadi General Hospital/Faculty of Medicine, Diponegoro University, Semarang, Indonesia
| | - Chudahman Manan
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine-Cipto Mangunkusumo Teaching Hospital, University of Indonesia, Jakarta, Indonesia
| | - Dharmika Djojoningrat
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine-Cipto Mangunkusumo Teaching Hospital, University of Indonesia, Jakarta, Indonesia
| | - Achmad Fauzi
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine-Cipto Mangunkusumo Teaching Hospital, University of Indonesia, Jakarta, Indonesia
| | - Kaka Renaldi
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine-Cipto Mangunkusumo Teaching Hospital, University of Indonesia, Jakarta, Indonesia
| | - Hasan Maulahela
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine-Cipto Mangunkusumo Teaching Hospital, University of Indonesia, Jakarta, Indonesia
| | - Amanda Pitarini Utari
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine-Cipto Mangunkusumo Teaching Hospital, University of Indonesia, Jakarta, Indonesia
| | - Rabbinu Rangga Pribadi
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine-Cipto Mangunkusumo Teaching Hospital, University of Indonesia, Jakarta, Indonesia
| | - Virly Nanda Muzellina
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine-Cipto Mangunkusumo Teaching Hospital, University of Indonesia, Jakarta, Indonesia
| | - Saskia Aziza Nursyirwan
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine-Cipto Mangunkusumo Teaching Hospital, University of Indonesia, Jakarta, Indonesia
| | - Muhammad Firhat Idrus
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine-Cipto Mangunkusumo Teaching Hospital, University of Indonesia, Jakarta, Indonesia
| | - Ruswhandi Ruswhandi
- Department of Internal Medicine, Gatot Subroto Army Central Hospital, Jakarta, Indonesia
| | - Titong Sugihartono
- Division of Gastroentero-Hepatology, Department of Internal Medicine, Faculty of Medicine-Dr. Soetomo Teaching Hospital, Universitas Airlangga, Surabaya, Indonesia
| | - Muhammad Begawan Bestari
- Division of Gastroenterohepatology, Department of Internal Medicine, Hasan Sadikin General Hospital/Faculty of Medicine, Padjadjaran University, Bandung, Indonesia
| | - Putut Bayupurnama
- Division of Gastroenterohepatology, Department of Internal Medicine, Sardjito General Hospital/Faculty of Medicine, Public Health and Nursing, Gadjah Mada University, Yogyakarta, Indonesia
| | - Triyanta Yuli Pramana
- Division of Gastroenterohepatology, Department of Internal Medicine, Moewardi General Hospital/Faculty of Medicine, Sebelas Maret University, Surakarta, Indonesia
| | - Bogi Pratomo Wibowo
- Division of Gastroenterohepatology, Department of Internal Medicine, Saiful Anwar General Hospital/Faculty of Medicine, Brawijaya University, Malang, Indonesia
| | - Achmad Fuad Bakry
- Division of Gastroenterohepatology, Department of Internal Medicine, Moch. Hoesin General Hospital/Faculty of Medicine, Sriwijaya University, Palembang, Indonesia
| | - Fardah Akil
- Division of Gastroenterohepatology, Department of Internal Medicine, Wahidin Sudirohusodo General Hospital/Faculty of Medicine, Hasanuddin University, Makassar, Indonesia
| | - Andi Muhammad Luthfi Parewangi
- Division of Gastroenterohepatology, Department of Internal Medicine, Wahidin Sudirohusodo General Hospital/Faculty of Medicine, Hasanuddin University, Makassar, Indonesia
| | - Haris Widita
- Department of Internal Medicine, West Nusa Tenggara General Hospital, Mataram, Indonesia
| | - I Ketut Mariadi
- Division of Gastroenterohepatology, Department of Internal Medicine, Udayana University/Sanglah General Hospital, Bali, Denpasar, Indonesia
| | - Ignatia Sinta Murti
- Department of Internal Medicine, Abdul Wahab Sjahranie General Hospital/Faculty of Medicine, Mulawarman University, Samarinda, Indonesia
| | - Ali Imron Yusuf
- Department of Internal Medicine, Abdoel Moeloek General Hospital/Faculty of Medicine, Lampung University, Lampung, Indonesia
| | - Arles Arles
- Department of Internal Medicine, Awal Bros Pekanbaru Hospital, Pekanbaru, Indonesia
| | - Fauzi Yusuf
- Division of Gastroenterohepatology, Department of Internal Medicine, Zainoel Abidin General Hospital/Faculty of Medicine, Syiah Kuala University, Banda Aceh, Indonesia
| | - Bradley Jimmy Waleleng
- Division of Gastroenterohepatology, Department of Internal Medicine, Prof. R. D. Kandou General Hospital/Faculty of Medicine, Sam Ratulangi University, Manado, Indonesia
| | - Abimanyu Abimanyu
- Department of Internal Medicine, Ulin Banjarmasin General Hospital, Faculty of Medicine, Lambung Mangkurat University, Banjarmasin, Indonesia
| | - Yustar Mulyadi
- Department of Internal Medicine, Soedarso General Hospital, Pontianak, Indonesia
| | - Maria Inge Lucida
- Institute of Tropical Disease, Universitas Airlangga, Surabaya, Indonesia
| | - Yudith Annisa Ayu Rezkhita
- Helicobacter Pylori and Microbiota Study Group, Institute of Tropical Disease, Universitas Airlangga, Surabaya, Indonesia
- Department of Internal Medicine, Faculty of Medicine, Universitas Muhammadiyah Surabaya, Surabaya, Indonesia
| | - Ricky Indra Alfaray
- Helicobacter Pylori and Microbiota Study Group, Institute of Tropical Disease, Universitas Airlangga, Surabaya, Indonesia
- Department of Environmental and Preventive Medicine, Faculty of Medicine, Oita University, Oita, Japan
| | - Yoshio Yamaoka
- Department of Environmental and Preventive Medicine, Faculty of Medicine, Oita University, Oita, Japan
- The Research Center for GLOBAL and LOCAL Infectious Diseases (RCGLID), Oita University, Oita, Japan
- Department of Medicine, Gastroenterology and Hepatology Section, Baylor College of Medicine, Houston, USA
| |
Collapse
|
4
|
Liu H, Wang J, Hu X, Tang X, Zhang C. A rapid and high-throughput Helicobacter pylori RPA-CRISPR/Cas12a-based nucleic acid detection system. Clin Chim Acta 2023; 540:117201. [PMID: 36572137 DOI: 10.1016/j.cca.2022.12.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 11/30/2022] [Accepted: 12/13/2022] [Indexed: 12/25/2022]
Abstract
BACKGROUND Helicobacter pylori lives in the human stomach and causes gastric cancer and other gastric diseases. The development of molecular technology has facilitated low-cost, rapid, and high-throughput detection of H. pylori. MATERIALS AND METHODS The combination of isothermal recombinase polymerase amplification (RPA) and CRISPR-Cas12a was used for early diagnosis and monitoring of H. pylori in clinical settings. The UreB genes from 242 H. pylori strains were subjected to cluster analysis, and we designed corresponding RPA primers and screened 2 sets of CRISPR-derived RNAs (crRNAs) for accurate H. pylori recognition. We then performed specificity and sensitivity validation of seven strains using this RPA-CRISPR/Cas12a method. In addition, the cut-off values of this RPA-CRISPR/Cas12a method based on fluorescence values (i.e., RPA-CRISPR/Cas12a-FT) were determined by comparison with quantitative PCR (qPCR), and further experiments comparing different methods were performed using clinical samples. RESULTS We developed a rapid detection system based on the combination of RPA and CRISPR-Cas12a, which was applied to the early diagnosis and monitoring of H. pylori in clinical settings. The RPA-CRISPR/Cas12a system was used to detect the UreB gene. We found that the limit of detection (LOD) for the CRISPR/Cas12a method based on the lateral flow dipstick result (i.e., CRISPR/Cas12a-LFD) was 100 copies, the cut-off value was 1.4; and for CRISPR/Cas12a-FT the LOD was 50 copies. This system was used to assess clinical samples and showed high reproducibility with proof-of-concept sensitivity, and the whole detection process was completed within 40 min. CONCLUSION As a diagnostic method that can detect the UreB gene of H. pylori in gastric tissue samples rapidly, sensitively, visually, and in a high throughput manner, our method provides a new diagnostic option for clinicians. This system is ideal for hospitals or testing sites with limited medical resources.
Collapse
Affiliation(s)
- Hua Liu
- Fundamental Research Center, Shanghai YangZhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), School of Life Sciences and Technology, Tongji University, Shanghai 201619, China
| | - Jinbin Wang
- Institute of Biotechnology Research, Shanghai Academy of Agricultural Sciences, Key Laboratory of Agricultural Genetics and Breeding, Shanghai 201106, China
| | - Xiuwen Hu
- Institute of Biotechnology Research, Shanghai Academy of Agricultural Sciences, Key Laboratory of Agricultural Genetics and Breeding, Shanghai 201106, China
| | - Xueming Tang
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Chao Zhang
- Fundamental Research Center, Shanghai YangZhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), School of Life Sciences and Technology, Tongji University, Shanghai 201619, China.
| |
Collapse
|
5
|
Usefulness of Molecular Methods for Helicobacter pylori Detection in Pediatric Patients and Their Correlation with Histopathological Sydney Classification. Int J Mol Sci 2022; 24:ijms24010179. [PMID: 36613620 PMCID: PMC9820059 DOI: 10.3390/ijms24010179] [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: 10/23/2022] [Revised: 12/14/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022] Open
Abstract
Helicobacter pylori infections, as one of the most prevalent among humans, are generally acquired during childhood, and are one of the main causes of chronic gastritis and peptic ulcer disease. A bacterial culture from a gastric biopsy is the gold standard and is the only method that has 100% specificity. However, its sensitivity varies, depending on experience of the laboratory staff, applied culture media, specimen transport conditions, biopsy site, and quality of the sample. The same factors compromise all invasive methods and a culture-based H. pylori infection diagnostic, as well as a recent intake of antibiotics, bismuth-containing compounds, and proton pump inhibitors. Molecular methods have been used for clinical microbiology investigation since the beginning of the 21st century. However, their usefulness for H. pylori infections diagnosis remains unclear, especially in pediatric patients. The aim of the study was to assess the incidence of H. pylori infections in a group of 104 pediatric patients and to compare the results of the PCR test with the corresponding histopathological investigation effects. Among the biopsy samples collected from 104 children, 44 (42.3%) were positive in PCR, while 43 (41.3%) and 39 (37.5%) presented histologically-confirmed signs of inflammation and H. pylori colonization, respectively. Moreover, the mean grades of the parameters of the histopathological examination were higher in the group of PCR-positive samples. The compatibility of both research methods was confirmed, emphasizing the usefulness of molecular methods for detecting H. pylori infections in pediatric patients. Considering that the PCR-based method gives reliable results and is less time-consuming and costly, it is worth discussing this method as a new standard in the diagnosis of H. pylori infections, at least among pediatric patients, for which culture-based diagnostics is not sufficient or histopathological examination is negative, while inflammation signs are observed macroscopically.
Collapse
|
6
|
Ansari S, Yamaoka Y. Helicobacter pylori Infection, Its Laboratory Diagnosis, and Antimicrobial Resistance: a Perspective of Clinical Relevance. Clin Microbiol Rev 2022; 35:e0025821. [PMID: 35404105 PMCID: PMC9491184 DOI: 10.1128/cmr.00258-21] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Despite the recent decrease in overall prevalence of Helicobacter pylori infection, morbidity and mortality rates associated with gastric cancer remain high. The antimicrobial resistance developments and treatment failure are fueling the global burden of H. pylori-associated gastric complications. Accurate diagnosis remains the opening move for treatment and eradication of infections caused by microorganisms. Although several reports have been published on diagnostic approaches for H. pylori infection, most lack the data regarding diagnosis from a clinical perspective. Therefore, we provide an intensive, comprehensive, and updated description of the currently available diagnostic methods that can help clinicians, infection diagnosis professionals, and H. pylori researchers working on infection epidemiology to broaden their understanding and to select appropriate diagnostic methods. We also emphasize appropriate diagnostic approaches based on clinical settings (either clinical diagnosis or mass screening), patient factors (either age or other predisposing factors), and clinical factors (either upper gastrointestinal bleeding or partial gastrectomy) and appropriate methods to be considered for evaluating eradication efficacy. Furthermore, to cope with the increasing trend of antimicrobial resistance, a better understanding of its emergence and current diagnostic approaches for resistance detection remain inevitable.
Collapse
Affiliation(s)
- Shamshul Ansari
- Department of Environmental and Preventive Medicine, Oita University Faculty of Medicine, Yufu City, Oita, Japan
| | - Yoshio Yamaoka
- Department of Environmental and Preventive Medicine, Oita University Faculty of Medicine, Yufu City, Oita, Japan
- Department of Medicine, Gastroenterology and Hepatology Section, Baylor College of Medicine, Houston, Texas, USA
- Institute of Tropical Disease, Universitas Airlangga, Surabaya, Indonesia
| |
Collapse
|
7
|
Is Molecular Analysis Mandatory for Better Post-surgical Outcome in Sleeve Gastrectomy Specimens with Asymptomatic Helicobacter pylori Colonization? A Study from Pakistan. Jundishapur J Microbiol 2022. [DOI: 10.5812/jjm-122528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background: Helicobacter pylori colonizes gastric tissue in obese patients and mostly remains undetected clinically, as histological and molecular analysis is seldom ordered in such cases. Objectives: This study aimed to detect the frequency of H. pylori using different techniques in sleeve gastrectomy specimens of obese patients with minimal or no symptoms suggestive of gastritis. Methods: This longitudinal study was carried out at Farooq Hospital Westwood Lahore, Morbid Anatomy and Histopathology Department and Resource Laboratory at the University of Health Sciences, Lahore, Pakistan, from February 2021 to September 2021. This study selected 80 cases who underwent sleeve gastrectomy within six months. Helicobacter pylori was detected by rapid urease test (RUT), modified Giemsa staining, and polymerase chain reaction (PCR) techniques. Results: Most patients (83.7%) were clinically asymptomatic, while 10% had mild and 6.3% had moderate to severe gastritis symptoms. Of the asymptomatic patients, 56.7% of biopsies showed chronic gastritis. Rapid urease test and modified Giemsa staining showed positive evidence for H. pylori in 47.3% of cases, whereas an additional 13.2% of biopsies that were negative on conventional methods showed the amplification of H. pylori DNA by PCR. Patients were discharged with proton-pump inhibitors therapy (40 mg/day) that showed no adverse post-surgical event over a follow-up of six months. Conclusions: Persistent obesity and other socioeconomic factors may lead to colonizing asymptomatic H. pylori infection. More sensitive techniques for detecting H. pylori may be employed in resource-constrained settings for better patient outcomes and to minimize the complications after sleeve gastrectomy.
Collapse
|
8
|
Vagarali MA, Metgud SC, Bannur H, Dodamani SS. A Cross-Sectional Study on Molecular Detection of Helicobacter pylori cytotoxin-associated gene A and 16SrRNA Gene from Gastric Biopsy Specimens. J Glob Infect Dis 2021; 13:120-125. [PMID: 34703151 PMCID: PMC8491809 DOI: 10.4103/jgid.jgid_60_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 08/10/2020] [Accepted: 09/19/2020] [Indexed: 11/04/2022] Open
Abstract
Introduction: The aim of the study is relative proportion of cytotoxin-associated gene A (cagA) virulence marker in Helicobacter pylori isolates and gastric biopsy samples by polymerase chain reaction (PCR). Methods: This cross-sectional study was conducted at a tertiary care hospital setting. Gastric biopsy tissues from 200 patients, suffering from upper gastrointestinal tract disorders, were examined for H. pylori infection using methods, such as hematoxylin and eosin (H and E) staining, 16S rRNA (Ribosomal ribonucleic acid), and cagA gene PCR. Chi-square and kappa statistics were used to find the association and agreement between the tests, respectively; P ≤ 0.05 was considered statistically significant. Screening tests' accuracy was calculated in terms of sensitivity and specificity along with positive and negative predictive values. Results: Out of 200 patients, H. pylori was detected in 14.5%, 48.5%, and 31% patients by H and E staining, 16S rRNA, and cagA PCR, respectively. Sensitivity and specificity of cagA PCR as compared to H and E staining were 89.6% and 78.9%, respectively. Conclusions: CagA detection directly from biopsy specimen by PCR can potentially and rapidly determine the patient's status, especially when at a higher risk of peptic ulcer.
Collapse
Affiliation(s)
| | - Sharada C Metgud
- Department of Microbiology, JNMC, KAHER, Belagavi, Karnataka, India
| | - Hema Bannur
- Department of Pathology, JNMC, KAHER, Belagavi, Karnataka, India
| | - Suneel S Dodamani
- Dr. Prabhakar Kore Basic Science Research Centre, Belagavi, Karnataka, India
| |
Collapse
|
9
|
Akeel M, Elhafey A, Shehata A, Elmakki E, Aboshouk T, Ageely H, Mahfouz MS. Efficacy of immunohistochemical staining in detecting <em>Helicobacter pylori</em> in Saudi patients with minimal and atypical infection. Eur J Histochem 2021; 65. [PMID: 34284564 PMCID: PMC8314390 DOI: 10.4081/ejh.2021.3222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 05/05/2021] [Indexed: 12/21/2022] Open
Abstract
Gastric Helicobacter pylori infection is diagnosed based on histopathological evaluation of gastric mucosal biopsies, urease test, urea breath test, H. pylori culturing, or direct detection using polymerase chain reaction (PCR). This study aimed to evaluate the efficacy of immunohistochemical (IHC) staining in detecting H. pylori in gastric biopsies from patients with chronic gastritis and minimal or atypical infection. Gastric biopsies from 50 patients with chronic gastritis were subjected to routine haematoxylin and eosin (H-E), modified Giemsa, and IHC staining. The results of staining were compared with those of quantitative real-time PCR (qRT-PCR). The qRT-PCR analysis identified 32 (64%) H. pylori-positive cases, whereas IHC, H-E, and modified Giemsa staining identified 29 (58%), 27 (54%), and 21 (42%) positive cases. The sensitivity of IHC staining (87.50%) was higher than that of H-E (59.38%) and modified Giemsa (43.75%) staining. The specificity of H-E, modified Giemsa, and IHC staining was 55.56%, 61.11%, and 94.44%, respectively. IHC staining exhibited the highest diagnostic accuracy (90%), followed by H-E (58%) and modified Giemsa (50%) staining. Active gastritis, intestinal metaplasia, and lymphoid follicles were detected in 32 (64%), 4 (8%), and 22 (44%) cases, respectively, and all of these cases were H. pylori positive. In contrast to routine H-E and modified Giemsa staining, IHC allows for the accurate H. pylori detection in cases with minimal or atypical infection. Moreover, IHC can be an alternative diagnostic method to qRT-PCR for detection of H. pylori in such cases.
Collapse
Affiliation(s)
- Mohammed Akeel
- Department of Anatomy, Faculty of Medicine, Jazan University.
| | - Ahmed Elhafey
- Department of Pathology, Faculty of Medicine, Jazan University.
| | - Atef Shehata
- Department of Microbiology and Immunology, Faculty of Medicine, Jazan University.
| | - Erwa Elmakki
- Department of Internal Medicine, Faculty of Medicine, Jazan University.
| | - Thanaa Aboshouk
- Department of Biochemistry, Faculty of Medicine, Jazan University.
| | - Hussein Ageely
- Department of Internal Medicine, Faculty of Medicine, Jazan University.
| | | |
Collapse
|
10
|
Diagnosis of Helicobacter pylori Infection in a Routine Testing Workflow: Effect of Bacterial Load and Virulence Factors. J Clin Med 2021; 10:jcm10132755. [PMID: 34201588 PMCID: PMC8268826 DOI: 10.3390/jcm10132755] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/14/2021] [Accepted: 06/18/2021] [Indexed: 02/07/2023] Open
Abstract
Reliable diagnostic methods are mandatory for effective management of Helicobacter pylori infection. Histology and culture are the most common invasive methods in current practice, even if molecular methods are gaining in importance. The performance of these conventional methods varies significantly. We conducted a retrospective study of 1540 adults and 504 children with gastric biopsies taken during endoscopy to assess the impact of bacterial load and the cagA virulence factor on the performance of H. pylori infection testing. The association between virulence and histology findings was also investigated. With 23S rRNA qPCR confirmed by glmM amplification as the gold standard, culture and histology had lower sensitivity, 74.4% and 73.3%, respectively. However, their sensitivity was enhanced (>90%) in biopsies with high bacterial load (qPCR Ct < 30). Positive cagA status of the strain was associated with high bacterial load (94.9%), thus resulting in more frequent positive culture (94.3%) and H. pylori histology detection (91.7%) and more severe lesions on histology (p < 0.001). Conversely, the cagA status of the strains was negative in 110/119 (92.4%) of biopsies with low bacterial load (qPCR Ct < 30), 82/90 (91.1%) with negative H. pylori histology detection and 119/131 (90%) with negative culture findings (p < 0.001). This study highlights the low sensitivity of conventional culture and histology that may lead to false negative diagnosis if used alone. H. pylori quantification associated with cagA genotyping in routine workflow are essential for a sensitive and reliable diagnosis, to identify patients at high risk and to manage eradication therapies.
Collapse
|
11
|
Szőke A, Mocan S, Negovan A. Helicobacter pylori infection over bile reflux: No influence on the severity of endoscopic or premalignant gastric lesion development. Exp Ther Med 2021; 22:766. [PMID: 34055065 PMCID: PMC8145345 DOI: 10.3892/etm.2021.10198] [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: 03/12/2021] [Accepted: 04/12/2021] [Indexed: 01/01/2023] Open
Abstract
Helicobacter (H.) pylori infection and duodenogastric reflux (DGR) are both linked to endoscopic and premalignant gastric lesion development, but it is still unclear whether they are independent or have a causal relationship. This study investigated the histologic gastric changes in patients with primary DGR and H. pylori infection, as well as their endoscopic findings, symptoms, drug consumption, and social behavior in comparison with patients presenting only DGR. The study included 560 patients with primary DGR on endoscopy divided into two groups, according to the presence/absence of H. pylori infection on biopsy (utilizing usual stainings and immunohistochemical methods). There was no significant difference in terms of age and sex, nor in the frequency of diabetes or esophagitis between the studied groups. Epigastric pain was associated with H. pylori-positive biopsies in multivariate logistic regression analysis (P=0.005). Although without statistical significance, severe endoscopic lesions and premalignant gastric lesions were more frequent in the H. pylori group (45.1 vs. 28.4% and 37.4 vs. 32.3%, respectively). In patients with DGR, the final multivariate model revealed a positive association between smoking and immunohistochemically confirmed H. pylori infection (P=0.02, OR=1.88, 95% confidence intervals (CI)=1.10 to 3.21), but a negative effect of proton pump inhibitor consumption (P<0.001, OR=0.50, 95% CI=0.35 to 0.73). In conclusion, in patients with H. pylori infection and DGR, epigastric pain was the main reason for the endoscopic investigation. H. pylori infection over DGR did not influence the severity of endoscopic or premalignant gastric lesion development. Furthermore, smoking is directly related to immunohistochemically assessed active H. pylori infection in patients with bile reflux.
Collapse
Affiliation(s)
- Andreea Szőke
- Department of Pathology, Mureș County Clinical Hospital, 540061 Târgu Mureș, Romania
| | - Simona Mocan
- Department of Pathology, Emergency County Hospital, 540136 Târgu Mureș, Romania
| | - Anca Negovan
- Department of Clinical Science-Internal Medicine, 'George Emil Palade' University of Medicine, Pharmacy, Science, and Technology, 540139 Târgu Mureș, Romania
| |
Collapse
|
12
|
Dore MP, Pes GM. What Is New in Helicobacter pylori Diagnosis. An Overview. J Clin Med 2021; 10:jcm10102091. [PMID: 34068062 PMCID: PMC8152493 DOI: 10.3390/jcm10102091] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/05/2021] [Accepted: 05/11/2021] [Indexed: 12/12/2022] Open
Abstract
Helicobacter pylori infection remains one of the most prevalent infections worldwide, especially in low-resource countries, and the major risk factor for peptic ulcer and gastric cancer. The “test-and-treat” strategy is recommended by several guidelines and consensus. The choice of testing method is based on patient age, presence of alarm signs and/or symptoms, use of non-steroidal anti-inflammatory drugs, as well as local availability, test reliability, and cost. Culture is the gold standard to detect H. pylori and, possibly, to perform susceptibility testing, however, it requires upper endoscopy and dedicated labs. Recent advances in molecular biology have provided new strategies in detecting infection and antimicrobial resistance without invasive tests. In this review we attempt to offer a comprehensive panorama on the new diagnostic tools and their potential use in clinical settings, in order to accomplish specific recommendations.
Collapse
Affiliation(s)
- Maria Pina Dore
- Dipartimento di Scienze Mediche, Chirurgiche e Sperimentali, University of Sassari, 07100 Sassari, Italy;
- Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
- Correspondence: ; Tel.: +39-079-229-886
| | - Giovanni Mario Pes
- Dipartimento di Scienze Mediche, Chirurgiche e Sperimentali, University of Sassari, 07100 Sassari, Italy;
| |
Collapse
|
13
|
Šeligová B, Lukáč Ľ, Bábelová M, Vávrová S, Sulo P. Diagnostic reliability of nested PCR depends on the primer design and threshold abundance of Helicobacter pylori in biopsy, stool, and saliva samples. Helicobacter 2020; 25:e12680. [PMID: 32057175 DOI: 10.1111/hel.12680] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 12/23/2019] [Accepted: 01/25/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND The aim of this work was to find a reliable nested PCR for the detection of Helicobacter pylori in biopsy, stool, and saliva specimens. MATERIALS AND METHODS Novel nested PCR was elaborated and validated on 81 clinical biopsy, stool, and saliva samples from the same individual and compared to available H pylori assays: histology, rapid urease test (RUT), stool antigen test (SAT), 13 C-urea breath test (UBT). RESULTS The efficiency and selectivity of 17 published nested polymerase chain reactions (PCR) available for Helicobacter pylori detection were re-evaluated. Most of them had serious limitations and mistakes in primer design. Hence, we elaborated a nested PCR for the unambiguous identification of H pylori in biopsy, stool, and saliva, using primers targeted to variable regions of the 16S ribosomal RNA (rRNA) gene. Moreover, we determined the detection limit by adding a known number of cells. This number was as low as 0.5 cells in a PCR vial, but due to the DNA isolation procedures, it required 1-5 × 103 cells/g or ml of specimen. The sensitivity for nested PCR from stomach biopsies was on the same scale as 13 C-UBT (93.8%), but it was much lower in amplifications from stool (31.3%). Sequencing of all obtained PCR products exclusively confirmed H pylori-specific DNA sequences. CONCLUSIONS Elaborated nested PCR assay can serve as an auxiliary method for controversial samples (patients with bleeding or taking proton-pump inhibitor) in laboratories with basic equipment. The sensitivity and specificity for the amplification from gastric biopsies was almost like 13 C-UBT. Despite the good sensitivity, the threshold occurrence and the ability to survive in the oral cavity aside from and independent of the stomach is the reason why H pylori DNA cannot be reliably detected in saliva, stool, and some biopsy samples.
Collapse
Affiliation(s)
- Barbora Šeligová
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia
| | - Ľudovít Lukáč
- First Department of Internal Medicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Michaela Bábelová
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia
| | - Silvia Vávrová
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia
| | - Pavol Sulo
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia
| |
Collapse
|
14
|
Makristathis A, Hirschl AM, Mégraud F, Bessède E. Review: Diagnosis of Helicobacter pylori infection. Helicobacter 2019; 24 Suppl 1:e12641. [PMID: 31486244 DOI: 10.1111/hel.12641] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Endoscopic imaging of the stomach is improving. In addition to narrow band imaging, other methods, for example, blue light imaging and linked color imaging, are now available and can be combined with artificial intelligence systems to obtain information on the gastric mucosa and detect early gastric cancer. Immunohistochemistry is only recommended as an ancillary stain in case of chronic active gastritis without Helicobacter pylori detection by standard staining, and recommendations to exclude false negative H. pylori results have been made. Molecular methods using real-time PCR, droplet digital PCR, or amplification refractory mutation system PCR have shown a high accuracy, both for detecting H. pylori and for clarithromycin susceptibility testing, and can now be used in clinical practice for targeted therapy. The most reliable non-invasive test remains the 13 C-urea breath test. Large data sets show that DOB values are higher in women and that the cut-off for positivity could be decreased to 2.74 DOB. Stool antigen tests using monoclonal antibodies are widely used and may be a good alternative to UBT, particularly in countries with a high prevalence of H. pylori infection. Attempts to improve serology by looking at specific immunodominant antigens to distinguish current and past infection have been made. The interest of Gastropanel® which also tests pepsinogen levels was confirmed.
Collapse
Affiliation(s)
- Athanasios Makristathis
- Division for Clinical Microbiology, Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Alexander M Hirschl
- Division for Clinical Microbiology, Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Francis Mégraud
- French National Reference Center for Campylobacters and Helicobacters, Bacteriology Laboratory, CHU Pellegrin, Bordeaux, France.,INSERM, UMR1053, BaRITOn, University of Bordeaux, Bordeaux, France
| | - Emilie Bessède
- French National Reference Center for Campylobacters and Helicobacters, Bacteriology Laboratory, CHU Pellegrin, Bordeaux, France.,INSERM, UMR1053, BaRITOn, University of Bordeaux, Bordeaux, France
| |
Collapse
|
15
|
Horiuchi S, Nakano R, Nakano A, Hishiya N, Uno K, Suzuki Y, Tanouchi A, Kakuta N, Masui T, Jojima N, Yano H. Development of a loop-mediated isothermal amplification assay for rapid Helicobacter pylori detection. J Microbiol Methods 2019; 163:105653. [PMID: 31199937 DOI: 10.1016/j.mimet.2019.105653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 06/10/2019] [Accepted: 06/10/2019] [Indexed: 02/07/2023]
Abstract
Infection with cagA-positive Helicobacter pylori is associated with gastric cancer. Molecular techniques are vital for accurate H. pylori diagnosis. We developed a loop-mediated isothermal amplification (LAMP) for detecting the H. pylori cagA gene and evaluated its use for clinical diagnosis. A LAMP primer set was designed to recognize the homologous regions of cagA gene sequences of 6 H. pylori strains. LAMP sensitivity was evaluated with serial dilutions of H. pylori ATCC 43504 and fecal specimens; specificity was evaluated with H. pylori ATCC 49396 and CIP 104086. The LAMP sensitivity for H. pylori specimens was 10-1 cfu/tube (reaction time, 37 min), which was 10-fold more sensitive than polymerase chain reaction. LAMP was also highly sensitive and rapid for fecal specimens. It detected cagA gene from ATCC 49396 and CIP 104086. The findings suggest LAMP can be used for diagnosing and screening of H. pylori infections to decrease gastric cancer incidence.
Collapse
Affiliation(s)
- Saori Horiuchi
- Department of Microbiology and Infectious Diseases, Nara Medical University, 840 Shijo-Cho, Kashihara, Nara 634-8521, Japan; Department of Public Health Nursing, Nara Medical University, 840 Shijo-Cho, Kashihara, Nara 634-8521, Japan.
| | - Ryuichi Nakano
- Department of Microbiology and Infectious Diseases, Nara Medical University, 840 Shijo-Cho, Kashihara, Nara 634-8521, Japan
| | - Akiyo Nakano
- Department of Microbiology and Infectious Diseases, Nara Medical University, 840 Shijo-Cho, Kashihara, Nara 634-8521, Japan
| | - Naokuni Hishiya
- Department of Microbiology and Infectious Diseases, Nara Medical University, 840 Shijo-Cho, Kashihara, Nara 634-8521, Japan; Department of Infectious Diseases, Minami-Nara General Medical Center, 8-1 Fukugami, Yoshino-gun, Oyodo, Nara 638-8551, Japan
| | - Kenji Uno
- Department of Infectious Diseases, Minami-Nara General Medical Center, 8-1 Fukugami, Yoshino-gun, Oyodo, Nara 638-8551, Japan
| | - Yuki Suzuki
- Department of Microbiology and Infectious Diseases, Nara Medical University, 840 Shijo-Cho, Kashihara, Nara 634-8521, Japan
| | - Ayako Tanouchi
- Department of Microbiology and Infectious Diseases, Nara Medical University, 840 Shijo-Cho, Kashihara, Nara 634-8521, Japan
| | - Naoki Kakuta
- Department of Microbiology and Infectious Diseases, Nara Medical University, 840 Shijo-Cho, Kashihara, Nara 634-8521, Japan
| | - Takashi Masui
- Department of otolaryngology - Head and Neck Surgery, Nara Medical University, 840 Shijo-Cho, Kashihara, Nara 634-8521, Japan
| | - Noriko Jojima
- Department of Public Health Nursing, Nara Medical University, 840 Shijo-Cho, Kashihara, Nara 634-8521, Japan
| | - Hisakazu Yano
- Department of Microbiology and Infectious Diseases, Nara Medical University, 840 Shijo-Cho, Kashihara, Nara 634-8521, Japan
| |
Collapse
|
16
|
Helicobacter pylori infection in children: an overview of diagnostic methods. Eur J Clin Microbiol Infect Dis 2019; 38:1035-1045. [PMID: 30734129 DOI: 10.1007/s10096-019-03502-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 01/31/2019] [Indexed: 12/14/2022]
Abstract
Children differ from adults regarding Helicobacter pylori (H. pylori) infection in many terms. H. pylori infection represents a key factor in the pathogenesis of duodenal ulcer and chronic gastritis in children. H. pylori infection causes some extraintestinal diseases as well as gastrointestinal diseases. Although, among these illnesses in children, symptoms like recurrent abdominal pain are not specific. Moreover, the role of the pathogen in the growth faltering, iron deficiency anemia, and asthma still remains controversial. A reliable method to detect H. pylori infection is a crucial issue, sand is still a matter of active debate. The tests applied for H. pylori diagnosis are grouped as either invasive or non-invasive methods. Invasive methods consist of endoscopic evaluation, the rapid urease test (RUT), histology, and bacterial culture. Non-invasive tests include the urea breath test (UBT), stool antigen test (SAT), serology, and molecular diagnostic approaches. Use of endoscopy is a pre-requisite for all invasive methods and poses difficulties in children as it is a difficult procedure and requires patient's cooperation. For this reason, the non-invasive tests have been commonly used in children, although their accuracy is not very reliable in some cases. Invasive tests may be opted to confirm the diagnosis as and when needed. This review presents the diagnostic tests used to detect H. pylori infection in children.
Collapse
|