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Homan M, Jones NL, Bontems P, Carroll MW, Czinn SJ, Gold BD, Goodman K, Harris PR, Jerris R, Kalach N, Kori M, Megraud F, Rowland M, Tavares M. Updated joint ESPGHAN/NASPGHAN guidelines for management of Helicobacter pylori infection in children and adolescents (2023). J Pediatr Gastroenterol Nutr 2024; 79:758-785. [PMID: 39148213 DOI: 10.1002/jpn3.12314] [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: 09/22/2023] [Revised: 04/25/2024] [Accepted: 05/10/2024] [Indexed: 08/17/2024]
Abstract
BACKGROUND Evolving epidemiological data and increasing antibiotic resistance mandate an update of the European and North American Societies of Pediatric Gastroenterology, Hepatology and Nutrition guidelines. METHODS Certainty of evidence and strength of recommendations were rated by experts according to the Grading of Recommendation Assessment, Development, and Evaluation approach. PICO (patient population, intervention, comparator, and outcome) questions were developed and voted on by the group. Recommendations were formulated using the Evidence to Decision framework. RESULTS The current literature supports many of the previous recommendations and several new recommendations. Invasive testing with strain antimicrobial susceptibility analysis is recommended for the diagnosis and selection of eradication therapy for H. pylori infection. Molecular methods are acceptable for detection of infection and of antibiotic resistance in gastric biopsy specimens. Reliable, noninvasive tests can be used as a screening method for children with history of gastric cancer in a first-degree relative. When investigating causes of chronic immune thrombocytopenic purpura, testing for H. pylori is no longer recommended. When investigating other diseases such as inflammatory bowel disease, celiac disease, or eosinophilic esophagitis, specific diagnostic biopsies for H. pylori infection are not indicated. However, if H. pylori is an incidental finding, treatment may be considered after discussing the risks and benefits. Treatment should be based on antibiotic antimicrobial susceptibility testing and, if unavailable, regimens containing clarithromycin should be avoided. CONCLUSIONS Due to decreasing prevalence of infection, increasing challenges with antibiotic resistance, and emerging evidence regarding complications of infection, clinicians must be aware of these recommended changes to appropriately manage H. pylori infection and its clinical sequelae in children.
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Affiliation(s)
- Matjaž Homan
- Faculty of Medicine, Children's Hospital in Ljubljana, University of Ljubljana, Ljubljana, Slovenia
| | - Nicola L Jones
- Division of Gastroenterology Hepatology and Nutrition, SickKids, University of Toronto, Toronto, Ontario, Canada
| | - Patrick Bontems
- Université Libre de Bruxelles, Hôpital Unversitaire des Enfants Reine Fabiola, Hôpitaux Universitaires de Bruxelles, Brussels, Belgium
| | - Matthew W Carroll
- Division of Gastroenterology and Nutrition, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Steven J Czinn
- University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Benjamin D Gold
- GI Care for Kids, LLC, Children's Center for Digestive Healthcare LLC, Children's Healthcare of Atlanta, Atlanta, Georgia, USA
| | - Karen Goodman
- Faculty of Medicine and Dentistry, Division of Gastroenterology, University of Alberta, Edmonton, Alberta, Canada
| | - Paul R Harris
- Department of Pediatric Gastroenterology and Nutrition, Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - Robert Jerris
- Children's Healthcare of Atlanta, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Nicolas Kalach
- Department of Pediatrics, Saint Vincent de Paul Hospital, Groupement des Hôpitaux de l'Institut Catholique de Lille (GHICL), Catholic University of Lille, Lille, France
| | - Michal Kori
- Pediatric Gastroenterology, Kaplan Medical Center, Rehovot, and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | | | - Marion Rowland
- School of Medicine and Medical Science, University College Dublin, Dublin, Ireland
| | - Marta Tavares
- Unidade de Gastroenterologia, Centro Materno Infantil do Norte, Centro Hospitalar Universitário de Santo António, Porto, Portugal
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Li C, He L, Wang A, Chen S, Fu P, Wang C. Antibiotic resistance and virulence genes in Helicobacter pylori strains isolated from children in Shanghai, China (2019-2022). Int J Med Microbiol 2024; 315:151622. [PMID: 38776570 DOI: 10.1016/j.ijmm.2024.151622] [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: 01/03/2024] [Revised: 05/07/2024] [Accepted: 05/20/2024] [Indexed: 05/25/2024] Open
Abstract
BACKGROUND The increasing prevalence of antibiotic-resistant Helicobacter pylori strains poses a significant threat to children's health. This study investigated antibiotic resistance rates in Helicobacter pylori strains isolated from children in Shanghai and analyzed the presence of virulence genes in these strains. METHODS We obtained 201 Helicobacter pylori strains from pediatric patients with upper gastrointestinal symptoms who underwent gastrointestinal endoscopy between 2019 and 2022. Subsequently, we performed antibiotic susceptibility tests and virulence gene PCR assays on these strains. RESULTS Helicobacter pylori resistance rates of 45.8%, 15.4%, 1.0%, and 2.5% were detected for metronidazole, clarithromycin, amoxicillin, and levofloxacin, respectively. Among all isolates, 64.7% exhibited resistance to at least one antibiotic. Resistance to metronidazole and clarithromycin increased from 2019 to 2022. The predominant vacA gene subtype was vacA s1a/m2. The prevalence of vacA m2 and dupA exhibited an upward trend, while oipA presented a decreasing trend from 2019 to 2022. The prevalence of dupA was significantly higher in gastritis than peptic ulcer disease, and in non-treatment compared to treatment groups. CONCLUSIONS Helicobacter pylori antibiotic resistance remains high in children and has risen in recent years. Therefore, the increasing use of metronidazole and clarithromycin requires increased monitoring in children. No association was observed between antibiotic resistance and virulence gene phenotypes.
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Affiliation(s)
- Chunling Li
- Lab of Microbiology, Department of Clinical Laboratory, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Leiyan He
- Lab of Microbiology, Department of Clinical Laboratory, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Aimin Wang
- Lab of Microbiology, Department of Clinical Laboratory, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Saige Chen
- Lab of Microbiology, Department of Clinical Laboratory, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Pan Fu
- Lab of Microbiology, Department of Clinical Laboratory, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China; Nosocomial Infection Control Department, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Chuanqing Wang
- Lab of Microbiology, Department of Clinical Laboratory, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China; Nosocomial Infection Control Department, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China.
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Sarıkaya B, Çetinkaya RA, Özyiğitoğlu D, Işık SA, Kaplan M, Kırkık D, Görenek L. High antibiotic resistance rates in Helicobacter pylori strains in Turkey over 20 years: implications for gastric disease treatment. Eur J Gastroenterol Hepatol 2024; 36:545-553. [PMID: 38477847 DOI: 10.1097/meg.0000000000002733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
OBJECTIVE Helicobacter pylori (Hp) eradication therapy is crucial for preventing the development of gastritis, peptic ulcers, and gastric cancer. An increase in resistance against antibiotics used in the eradication of Hp is remarkable. This meta-analysis aims to examine the resistance rates of Hp strains isolated in Turkey over the last 20 years against clarithromycin (CLR), metronidazole (MTZ), levofloxacin (LVX), tetracycline (TET), and amoxicillin (AMX) antibiotics. BASIC METHODS Literature search was carried out in electronic databases, by searching articles published in Turkish and English with the keywords ' helicobacter pylori ' or 'Hp' and 'antibiotic resistance' and 'Turkey'. That meta-analysis was carried out using random-effect model. First, the 20-year period data between 2002 and 2021 in Turkey were planned to be analyzed. As a second stage, the period between 2002 and 2011 was classified as Group 1, and the period between 2012 and 2021 as Group 2 for analysis, with the objective of revealing the 10-year temporal variation in antibiotic resistance rates. MAIN RESULTS In gastric biopsy specimens, 34 data from 29 studies were included in the analysis. Between 2002-2021, CLR resistance rate was 30.9% (95% CI: 25.9-36.2) in 2615 Hp strains. Specifically, in Group 1, the CLR resistance rate was 31% in 1912 strains, and in Group 2, it was 30.7% in 703 strains. The MTZ resistance rate was found to be 31.9% (95% CI: 19.8-45.4) in 789 strains, with rates of 21.5% in Group 1 and 46.6% in Group 2. The overall LVX resistance rate was 25.6%, with rates of 26.9% in Group 1 and 24.8% in Group 2. The 20-year TET resistance rate was 0.8%, with 1.50% in Group 1 and 0.2% in Group 2. The overall AMX resistance rate was 2.9%, 3.8% between 2002-2011, and 1.4% between 2012-2021. PRINCIPAL CONCLUSION Hp strains in Turkey exhibit high resistance rates due to frequent use of CLR, MTZ, and LVX antibiotics. However, a significant decrease has been observed in TET and AMX resistance to Hp in the last 10 years. Considering the CLR resistance rate surpasses 20%, we suggest reconsidering the use of conventional triple drug therapy as a first-line treatment. Instead, we recommend bismuth-containing quadruple therapy or sequential therapies (without bismuth) for first-line treatment, given the lower rates of TET and AMX resistance. Regimens containing a combination of AMX, CLR, and MTZ should be given priority in second-line therapy. Finally, in centers offering culture and antibiogram opportunities, regulating the Hp eradication treatment based on the antibiogram results is obviously more appropriate.
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Affiliation(s)
- Burak Sarıkaya
- Department of Infectious Diseases and Clinical Microbiology, Sultan 2. Abdulhamid Han Training and Research Hospital, University of Health Sciences
| | - Riza Aytaç Çetinkaya
- Department of Infectious Diseases and Clinical Microbiology, Sultan 2. Abdulhamid Han Training and Research Hospital, University of Health Sciences
| | - Derya Özyiğitoğlu
- Department of Infectious Diseases and Clinical Microbiology, Sultan 2. Abdulhamid Han Training and Research Hospital, University of Health Sciences
| | - Sinem Akkaya Işık
- Department of Infectious Diseases and Clinical Microbiology, Sultan 2. Abdulhamid Han Training and Research Hospital, University of Health Sciences
| | - Mustafa Kaplan
- Department of Gastroenterology, Sultan 2. Abdulhamid Han Training and Research Hospital, University of Health Sciences, Istanbul
| | - Duygu Kırkık
- Department of Medical Biology, Medicine Faculty, Arel University, Turkey
| | - Levent Görenek
- Department of Infectious Diseases and Clinical Microbiology, Sultan 2. Abdulhamid Han Training and Research Hospital, University of Health Sciences
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Lara Icaza JD, Tapia RL, Triana CTC, Ramírez LCR. Refractoriness to anti-Helicobacter pylori treatment attributed to phenotypic resistance patterns in patients with gastroduodenopathy in Guayaquil-Ecuador. Helicobacter 2024; 29:e13060. [PMID: 38581134 DOI: 10.1111/hel.13060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 01/13/2024] [Accepted: 02/13/2024] [Indexed: 04/08/2024]
Abstract
BACKGROUND Treatment of Helicobacter pylori gastric infection is complex and associated with increased rates of therapeutic failure. This research aimed to characterize the H. pylori infection status, strain resistance to antimicrobial agents, and the predominant lesion pattern in the gastroduodenal mucosa of patients with clinical suspicion of refractoriness to first- and second-line treatment who were diagnosed and treated in a health center in Guayaquil, Ecuador. METHODS A total of 374 patients with upper gastrointestinal symptoms and H. pylori infection were preselected and prescribed one of three triple therapy regimens for primary infection, as judged by the treating physician. Subsequently, 121 patients who returned to the follow-up visit with persistent symptoms after treatment were studied. RESULTS All patients had H. pylori infection. Histopathological examination diagnosed chronic active gastritis in 91.7% of cases; premalignant lesions were observed in 15.8%. The three triple therapy schemes applied showed suboptimal efficacy (between 47.6% and 77.2%), with the best performance corresponding to the scheme consisting of a proton pump inhibitor + amoxicillin + levofloxacin. Bacterial strains showed very high phenotypic resistance to all five antimicrobials tested: clarithromycin, 82.9%; metronidazole, 69.7%; amoxicillin and levofloxacin, almost 50%; tetracycline, 38.2%. Concurrent resistance to clarithromycin-amoxicillin was 43.4%, to tetracycline-metronidazole 30.3%, to amoxicillin-levofloxacin 27.6%, and to clarithromycin-metronidazole 59.2%. CONCLUSIONS In vitro testing revealed resistance to all five antibiotics, indicating that H. pylori exhibited resistance phenotypes to these antibiotics. Consequently, the effectiveness of triple treatments may be compromised, and further studies are needed to assess refractoriness in quadruple and concomitant therapies.
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Affiliation(s)
- Javier David Lara Icaza
- Centro Clínico Quirúrgico Ambulatorio (Hospital del Día) Efrén Jurado López, Guayaquil, Ecuador
- Universidad del Zulia (LUZ), Maracaibo, Venezuela
| | - Rosalina Lara Tapia
- Centro Clínico Quirúrgico Ambulatorio (Hospital del Día) Efrén Jurado López, Guayaquil, Ecuador
| | - Cástula Tania Castro Triana
- Centro Clínico Quirúrgico Ambulatorio (Hospital del Día) Efrén Jurado López, Guayaquil, Ecuador
- Universidad Católica de Santiago de Guayaquil, Guayaquil, Ecuador
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Fischbach W, Bornschein J, Hoffmann JC, Koletzko S, Link A, Macke L, Malfertheiner P, Schütte K, Selgrad DM, Suerbaum S, Schulz C. Update S2k-Guideline Helicobacter pylori and gastroduodenal ulcer disease of the German Society of Gastroenterology, Digestive and Metabolic Diseases (DGVS). ZEITSCHRIFT FUR GASTROENTEROLOGIE 2024; 62:261-321. [PMID: 38364851 DOI: 10.1055/a-2181-2225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Affiliation(s)
| | - Jan Bornschein
- Translational Gastroenterology Unit John, John Radcliffe Hospital Oxford University Hospitals, Oxford, United Kingdom
| | - Jörg C Hoffmann
- Medizinische Klinik I, St. Marien- und St. Annastiftskrankenhaus, Ludwigshafen, Deutschland
| | - Sibylle Koletzko
- Kinderklinik und Kinderpoliklinik im Dr. von Haunerschen Kinderspital, LMU-Klinikum Munich, Munich, Deutschland
- Department of Paediatrics, Gastroenterology and Nutrition, School of Medicine Collegium Medicum University of Warmia and Mazury, 10-719 Olsztyn, Poland
| | - Alexander Link
- Klinik für Gastroenterologie, Hepatologie und Infektiologie, Universitätsklinikum Magdeburg, Magdeburg, Deutschland
| | - Lukas Macke
- Medizinische Klinik und Poliklinik II Campus Großhadern, Universitätsklinikum Munich, Munich, Deutschland
- Deutsches Zentrum für Infektionsforschung, Standort Munich, Munich, Deutschland
| | - Peter Malfertheiner
- Klinik für Gastroenterologie, Hepatologie und Infektiologie, Universitätsklinikum Magdeburg, Magdeburg, Deutschland
- Medizinische Klinik und Poliklinik II Campus Großhadern, Universitätsklinikum Munich, Munich, Deutschland
| | - Kerstin Schütte
- Klinik für Allgemeine Innere Medizin und Gastroenterologie, Niels-Stensen-Kliniken Marienhospital Osnabrück, Osnabrück, Deutschland
| | - Dieter-Michael Selgrad
- Medizinische Klinik Gastroenterologie und Onkologie, Klinikum Fürstenfeldbruck, Fürstenfeldbruck, Deutschland
- Klinik für Innere Medizin 1, Universitätsklinikum Regensburg, Regensburg, Deutschland
| | - Sebastian Suerbaum
- Universität Munich, Max von Pettenkofer-Institut für Hygiene und Medizinische Mikrobiologie, Munich, Deutschland
- Nationales Referenzzentrum Helicobacter pylori, Pettenkoferstr. 9a, 80336 Munich, Deutschland
- Deutsches Zentrum für Infektionsforschung, Standort Munich, Munich, Deutschland
| | - Christian Schulz
- Medizinische Klinik und Poliklinik II Campus Großhadern, Universitätsklinikum Munich, Munich, Deutschland
- Deutsches Zentrum für Infektionsforschung, Standort Munich, Munich, Deutschland
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Alhalabi M, Almokdad R. Efficacy of a 2-week therapy with levofloxacin concomitant versus a levofloxacin sequential regimen for Helicobacter pylori infection in the Syrian population: a study protocol for randomized controlled trial. Trials 2024; 25:55. [PMID: 38225650 PMCID: PMC10789050 DOI: 10.1186/s13063-024-07906-3] [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] [Received: 10/07/2023] [Accepted: 01/02/2024] [Indexed: 01/17/2024] Open
Abstract
BACKGROUND Treating Helicobacter pylori is becoming increasingly difficult with the development of bacterial resistance to many established treatment regimens. As a result, researchers are constantly looking for novel and effective treatments. This trial aims to establish the efficacy of levofloxacin-based sequential treatment regimen and concomitant levofloxacin-based regimen as empirical first-line therapy in the Syrian population. METHOD This is an open-label, prospective, single-center, parallel, active-controlled, superiority, randomized clinical trial. The recruitment will target Helicobacter pylori-positive males and females between the ages of 18 and 65 to evaluate the efficacy of empirical first-line therapy in the Syrian population. We are planning to recruit up to 300 patients which is twice the required sample size. One hundred fifty individuals will be randomly assigned to undergo either a sequential levofloxacin-based treatment regimen or a concomitant levofloxacin-based regimen. High-dose dual therapy (proton-pump inhibitor and amoxicillin) will be the rescue therapy in the event of first-line failure. The first-line eradication rate in both groups is the primary outcome, and one of the secondary outcomes is the overall eradication rate of high-dose dual therapy in the event of first-line treatment protocol failure. Intention-to-treat analysis and per-protocol analysis will be used to evaluate the eradication rates of Helicobacter pylori for first-line treatment protocols. DISCUSSION For the first time in the Syrian population, this randomized controlled trial will provide objective and accurate evidence about the efficacy of a sequential levofloxacin-based treatment regimen. TRIAL REGISTRATION ClinicalTrials.gov NCT06065267 . Registered on October 3, 2023. Prospective registered. Enrollment of the first participant has not started yet.
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Affiliation(s)
- Marouf Alhalabi
- Gastroenterology Department, Damascus Hospital, Almujtahed Street, Damascus, Syria.
| | - Rasha Almokdad
- Gastroenterology Department, Damascus Hospital, Almujtahed Street, Damascus, Syria
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Pathak D, Mazumder A. Potential of Flavonoids as Promising Phytotherapeutic Agents to Combat Multidrug-Resistant Infections. Curr Pharm Biotechnol 2024; 25:1664-1692. [PMID: 38031767 DOI: 10.2174/0113892010271172231108190233] [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: 07/08/2023] [Revised: 09/18/2023] [Accepted: 10/03/2023] [Indexed: 12/01/2023]
Abstract
BACKGROUND Considering the limited number of current effective treatments, Multidrug- Resistant (MDR) illnesses have grown to be a serious concern to public health. It has become necessary to look for new antimicrobial drugs because of the emergence of resistance to numerous kinds of antibiotics. The use of flavonoids is one phytotherapeutic strategy that has been researched as a potential remedy for this issue. Secondary plant compounds called flavonoids have been found to have an antibacterial effect against resistant microorganisms. OBJECTIVE This review seeks to give readers a glimpse into contemporary studies on flavonoids' potential to fight MDR infections. METHODS A systematic search was conducted on electronic databases (PubMed, Scopus, and Google Scholar) using relevant keywords such as flavonoids, MDR infections, antimicrobial activity, and resistance microbes. Studies that investigated the antimicrobial activity of flavonoids against resistant microbes were included in this review. RESULTS Most research found that flavonoids have antibacterial efficacy against resistant microorganisms, and some also showed that they have synergistic benefits with traditional antibiotics. The flavonoids quercetin, kaempferol, apigenin, and luteolin were the most often investigated ones. According to research, flavonoids affect microbial gene expression, inhibit microbial enzymes, and disrupt the integrity of microbial cell membranes. Additionally, a few studies have noted the flavonoids' low toxicity and safety. CONCLUSION For the treatment of infections that are resistant to many drugs, flavonoids constitute a promising class of phytotherapeutic agents. To develop flavonoid-based treatment methods for treating MDR illnesses and assess the potential of flavonoids as adjuvants to conventional antimicrobial drugs, more study is required.
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Affiliation(s)
- Deepika Pathak
- Department of Pharmacy, Noida Institute of Engineering and Technology (Pharmacy Institute), Uttar Pradesh, India
| | - Avijit Mazumder
- Department of Pharmacy, Noida Institute of Engineering and Technology (Pharmacy Institute), Uttar Pradesh, India
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Maria CR, Rodriguez CM, Ines P, Helder V, Mafalda S, Ricardo V, Conceição MM. Bismuth-Based Therapy: The New Therapy for Obese Patients Undergoing Gastric Bypass Surgery? Obes Surg 2024; 34:123-127. [PMID: 37914885 DOI: 10.1007/s11695-023-06549-8] [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: 10/21/2022] [Revised: 03/08/2023] [Accepted: 03/09/2023] [Indexed: 11/03/2023]
Abstract
AIMS Our aim was to assess, in obese patients undergoing Roux-en Y gastric bypass surgery, the bismuth quadruple therapy (BQT) eradication rates at the first-line Helicobacter pylori (Hp) treatment as proposed by the Maastricht V/Florence consensus in areas with high clarithromycin (CLT) resistance rates-10 days proton pump inhibitor bid and three-in-one single capsule bismuth therapy containing bismuth, metronidazole, and tetracycline, marketed as Pylera four times a day. METHODS This is a single-center prospective study over a 3-year period. Endoscopy and Hp assessment by histology was performed at baseline, and posttreatment Hp status was assessed by C13 urea breath test 4-6 weeks after the end of therapy. Data analysis was performed using the IBM® SPSS® Statistics 28.0 (IBM Corp. 2021, Armonk, NY) using mostly nonparametric comparisons (α = 0.05). RESULTS The study cohort consisted of 598 adult obese Hp-positive patients [476, 78.6% female, age 43.2 (± 10.4) years] consecutively scheduled for Hp eradication therapy. Hp was eradicated in 500 patients [83.6.3% (95% CI: 80.4%-86.5%)], and the eradication was independent of gender, age, endoscopic diagnosis, and smoking status (p > 0.05). CONCLUSION Ten days of BQT did achieve Maastricht V/Florence recommended first-line eradication rates (at least 80%) in obese Portuguese patients undergoing Roux-en Y gastric bypass, being by now the most reliable choice for Hp eradication.
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Affiliation(s)
- Cerqueira Rute Maria
- Serviço de Gastrenterologia, Centro Hospitalar Entre Douro E Vouga, R Dr. Cândido Pinho, 4520-271, Santa Maria Feira, Portugal.
| | - Correia Manuel Rodriguez
- Serviço de Gastrenterologia, Centro Hospitalar Entre Douro E Vouga, R Dr. Cândido Pinho, 4520-271, Santa Maria Feira, Portugal
| | - Pita Ines
- Serviço de Gastrenterologia, Centro Hospitalar Entre Douro E Vouga, R Dr. Cândido Pinho, 4520-271, Santa Maria Feira, Portugal
| | - Vilar Helder
- Serviço de Gastrenterologia, Centro Hospitalar Entre Douro E Vouga, R Dr. Cândido Pinho, 4520-271, Santa Maria Feira, Portugal
| | - Sousa Mafalda
- Serviço de Gastrenterologia, Centro Hospitalar Entre Douro E Vouga, R Dr. Cândido Pinho, 4520-271, Santa Maria Feira, Portugal
| | - Veloso Ricardo
- Serviço de Gastrenterologia, Centro Hospitalar Entre Douro E Vouga, R Dr. Cândido Pinho, 4520-271, Santa Maria Feira, Portugal
| | - Manso M Conceição
- Biostastistics, Faculty of Health Sciences, FP-I3ID (Instituto de Investigação, Inovação E Desenvolvimento), University Fernando Pessoa, Portugal & LAQV-REQUIMTE-UP, Porto, Portugal
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Shmuely H, Shvartsman Y, Berdinstein R, Yahav J, Melzer E. The epidemiology of Helicobacter pylori resistance in a university affiliated hospital: a comparison between two time periods-a cross-sectional design. Eur J Med Res 2023; 28:538. [PMID: 38001550 PMCID: PMC10668426 DOI: 10.1186/s40001-023-01500-0] [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: 11/23/2022] [Accepted: 11/02/2023] [Indexed: 11/26/2023] Open
Abstract
PURPOSE During the last few decades, the increased use of various types of antibiotics in the general population caused a significant change in regional Helicobacter pylori (H. pylori) antibiotic resistance. Our aim is to study the changes in H. pylori resistance in patients who had undergone an esophagogastroduodenoscopy (EGD) and susceptibility testing and found positive for H. pylori. The study was conducted in a university affiliated hospital between 2013-2020. METHODS A cross-sectional study was performed on all consecutive patients who had undergone an EGD and tested positive for H. pylori at the Kaplan Medical Center, Israel. The study period was divided into two sub-periods: 2013-2016 and 2017-2020. Data on age, sex, comorbidities, previous treatments, and antimicrobial susceptibility testing for six antimicrobial agents were compared. RESULTS The resistance rates of H. pylori to clarithromycin and dual resistance to clarithromycin and metronidazole were found significantly higher during the late period. Multivariable analysis showed that the later period, older age, and diabetes mellitus were independent predictors for antimicrobial resistance. CONCLUSIONS Our study has shown that there is an increasing resistance of H. pylori to clarithromycin and metronidazole while its susceptibility is unaffected with time to other antibiotics. More recent cross-sectional studies with larger samples are warranted in order to evaluate the changes in the resistance patterns of H. pylori to various antibiotics with time.
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Affiliation(s)
- Haim Shmuely
- Department of Internal Medicine D, and Helicobacter Research Institute, Kaplan Medical Center, Rehovot, Israel.
- Faculty of Medicine, Hebrew University, Jerusalem, Israel.
| | - Yekaterina Shvartsman
- Department of Internal Medicine D, and Helicobacter Research Institute, Kaplan Medical Center, Rehovot, Israel
- Faculty of Medicine, Hebrew University, Jerusalem, Israel
| | - Rita Berdinstein
- Microbiology Laboratory, Kaplan Medical Center, Rehovot, Israel
- Faculty of Medicine, Hebrew University, Jerusalem, Israel
| | - Jacob Yahav
- Faculty of Medicine, Hebrew University, Jerusalem, Israel
| | - Ehud Melzer
- Faculty of Medicine, Hebrew University, Jerusalem, Israel
- Department of Gastroenterology, Kaplan Medical Center, Rehovot, Israel
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Kotilea K, Iliadis E, Nguyen J, Salame A, Mahler T, Miendje Deyi VY, Bontems P. Antibiotic resistance, heteroresistance, and eradication success of Helicobacter pylori infection in children. Helicobacter 2023; 28:e13006. [PMID: 37402147 DOI: 10.1111/hel.13006] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 07/05/2023]
Abstract
BACKGROUND Antibiotic resistance is a well-known factor of Helicobacter pylori eradication failure. Heteroresistance indicates the coexistence of resistant and susceptible strains and might lead to underestimating antimicrobial resistance. This study aims to evaluate the susceptibility profile, the frequency of heteroresistance of H. pylori strains, and their effect on eradication success in a pediatric population. MATERIALS AND METHODS Children aged 2-17 years who underwent an upper gastrointestinal endoscopy from 2011 to 2019 with positive H. pylori status were included. Susceptibility was measured by disk diffusion and E-test. The difference in susceptibility profiles between isolates from the antrum and the corpus was used to detect heteroresistance. For those who received eradication treatment, we evaluated eradication rate and factors affecting treatment success. RESULTS Inclusion criteria were met by 565 children. Strains susceptible to all antibiotics were detected in 64.2%. Primary resistance rates for clarithromycin (CLA), metronidazole (MET), levofloxacin (LEV), tetracyclin (TET), and amoxicillin (AMO) were 11%, 22.9%, 6.9%, 0.4%, and 0% and secondary resistance rates were 20.4%, 29.4%, 9.3%, 0%, and 0%. Heteroresistance was present in untreated children in 2%, 7.1%, 0.7%, 0.7%, and 0% for CLA, MET, LEV, TET, and AMO. First-line eradication rates were 78.5% in intention-to-treat (ITT), 88.3% in full-analysis-set (FAS), and 94.1% in per-protocol (PP). Factors affecting eradication success were the duration of treatment when the triple-tailored treatment was used, the number of daily doses of amoxicillin administered, and the patient's adherence to treatment. CONCLUSIONS This study shows the presence of relatively low primary resistance rates for H. pylori isolates but demonstrates the presence of heteroresistance in our population. Routine biopsies from the antrum and corpus must be considered for susceptibility testing to allow tailored treatments and increase eradication rates. Treatment success is affected by treatment choice, correct dosing of medications, and adherence. All these factors should be considered when evaluating the efficacy of an eradication regimen.
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Affiliation(s)
- Kallirroi Kotilea
- Pediatric Gastroenterology, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles, Brussels, Belgium
| | - Eleni Iliadis
- Pediatric Gastroenterology, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles, Brussels, Belgium
| | - Julie Nguyen
- Pediatric Gastroenterology, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles, Brussels, Belgium
| | - Assad Salame
- Pediatric Gastroenterology, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles, Brussels, Belgium
| | - Tania Mahler
- Pediatric Gastroenterology, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles, Brussels, Belgium
| | - Veronique Yvette Miendje Deyi
- Microbiology Department, Laboratoire Hospitalier Universitaire de Bruxelles (LHUB-ULB), Université Libre de Bruxelles, Brussels, Belgium
| | - Patrick Bontems
- Pediatric Gastroenterology, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles, Brussels, Belgium
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Nguyen J, Kotilea K, Bontems P, Miendje Deyi VY. Helicobacter pylori Infections in Children. Antibiotics (Basel) 2023; 12:1440. [PMID: 37760736 PMCID: PMC10525885 DOI: 10.3390/antibiotics12091440] [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: 06/05/2023] [Revised: 09/06/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
In the context of epidemiology, host response, disease presentation, diagnosis, and treatment management, the manifestation of Helicobacter pylori (H. pylori) infection diverges between children and adults. H. pylori infection stands out as one of the most prevalent bacterial infections globally, and its prevalence in both children and adults is decreasing in many developing countries but some still struggle with a high prevalence of pediatric H. pylori infection and its consequences. The majority of infected children are asymptomatic and pediatric studies do not support the involvement of H. pylori in functional disorders such as recurrent abdominal pain. The pathophysiology of H. pylori infection relies on complex bacterial virulence mechanisms and their interaction with the host immune system and environmental factors. This interaction gives rise to diverse gastritis phenotypes, which subsequently influence the potential development of various gastroduodenal pathologies. In clinical settings, the diagnosis of this infection in childhood requires an upper gastrointestinal endoscopic exam with mucosal biopsy samples for histology and culture, or Polymerase Chain Reaction (PCR) at the very least. When warranted, eradication treatment should be given when good compliance is expected, and there should be systematic use of a treatment adapted to the antimicrobial susceptibility profile. To combat the burgeoning threat of multidrug resistance, vigilant surveillance of resistance patterns and strategic antibiotic management are paramount.
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Affiliation(s)
- Julie Nguyen
- Department of Pediatric Gastroenterology, Hopital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles, 1000 Brussels, Belgium
| | - Kallirroi Kotilea
- Department of Pediatric Gastroenterology, Hopital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles, 1000 Brussels, Belgium
- Belgian Helicobacter and Microbiota Study Group (BHMSG), 1000 Brussels, Belgium
| | - Patrick Bontems
- Department of Pediatric Gastroenterology, Hopital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles, 1000 Brussels, Belgium
- Belgian Helicobacter and Microbiota Study Group (BHMSG), 1000 Brussels, Belgium
| | - Veronique Yvette Miendje Deyi
- Belgian Helicobacter and Microbiota Study Group (BHMSG), 1000 Brussels, Belgium
- Department of Microbiology, Laboratoire Hospitalier Universitaire de Bruxelles-Brussel Universitair Laboratorium (LHUB-ULB), Université Libre de Bruxelles, 1000 Brussels, Belgium
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12
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Temido MJ, Mbanze D, Almeida N, Oliveiros B, Gravito-Soares E, Figueiredo P. Is hybrid therapy more efficient in the eradication of Helicobacter pylori infection? A systematic review and meta-analysis. Ann Clin Microbiol Antimicrob 2023; 22:54. [PMID: 37403171 DOI: 10.1186/s12941-023-00582-2] [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: 11/27/2022] [Accepted: 04/11/2023] [Indexed: 07/06/2023] Open
Abstract
INTRODUCTION Hybrid therapy (HT) is a non-bismuth quadruple therapy created to surpass Helicobacter pylori's (H. pylori) resistance rates to antibiotics. HT has excellent eradication rates, as well as a very good compliance and safety profile. We aim to compare HT with sequential therapy (ST) and concomitant therapy (CT) for the eradication of H. pylori. METHODS This systematic review was conducted following the principles of the PRISMA guidelines. Literature was electronically searched on the CENTRAL library, PubMed, Embase, Scopus, LILACS, and ClinicalTrials.gov. Only randomized controlled trials were included. The primary outcome evaluated was eradication rate of H. pylori. The secondary outcomes evaluated were adverse events and compliance rates. Meta-analyses were performed with Cochrane Review Manager 5.4. The Mantel-Haenszel method was used to estimate the pooled relative risk and 95% confidence interval of the eradication rates between HT and other regimens, as well as the secondary outcomes. RESULTS 10 studies were included, comprising 2993 patients. The mean eradication rates achieved by HT with intention-to-treat (ITT) and per-protocol (PP) analyses were, respectively, 86% (range: 79.2-90.8%) and 91.7% (range: 82.6-96.1%). No statistically significant difference was found in ITT eradication rate between HT and CT (relative risk: 1; 95% CI: 0.96- 1.03) and between HT and ST (relative risk: 1.02; 95% CI: 0.92-1.14). PP analysis revealed similar results. HT was associated with higher compliance rates than CT and slightly lower than ST. As far as adverse events are concerned, this meta-analysis demonstrated a higher occurrence of adverse events on the group of patients treated with CT when compared with HT. HT and ST showed similar results. CONCLUSION HT has similar eradication, compliance and adverse event rates when compared to ST, but a better safety profile than the CT.
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Affiliation(s)
- Maria José Temido
- Gastroenterology Department, Centro Hospitalar e Universitário de Coimbra, Praceta Prof. Mota Pinto, 3004-561, Coimbra, Portugal
| | - Dara Mbanze
- Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Centro Hospitalar e Universitário de Coimbra, Praceta Prof. Mota Pinto, 3004-561, Coimbra, Portugal
| | - Nuno Almeida
- Gastroenterology Department, Centro Hospitalar e Universitário de Coimbra, Praceta Prof. Mota Pinto, 3004-561, Coimbra, Portugal.
- Faculty of Medicine, University of Coimbra, Coimbra, Portugal.
| | | | - Elisa Gravito-Soares
- Gastroenterology Department, Centro Hospitalar e Universitário de Coimbra, Praceta Prof. Mota Pinto, 3004-561, Coimbra, Portugal
- Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Pedro Figueiredo
- Gastroenterology Department, Centro Hospitalar e Universitário de Coimbra, Praceta Prof. Mota Pinto, 3004-561, Coimbra, Portugal
- Faculty of Medicine, University of Coimbra, Coimbra, Portugal
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13
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Rokkas T, Ekmektzoglou K. Advances in the pharmacological and regulatory management of multidrug resistant Helicobacter pylori. Expert Rev Clin Pharmacol 2023; 16:1229-1237. [PMID: 37937850 DOI: 10.1080/17512433.2023.2282061] [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: 06/28/2023] [Accepted: 11/07/2023] [Indexed: 11/09/2023]
Abstract
INTRODUCTION Antibiotic resistance of Helicobacter pylori (H. pylori) hampers the success of eradication and in recent years multidrug resistance (MDR) shows an increase worldwide. AREAS COVERED This review covers current aspects of pharmacological and regulatory management of MDR-resistant H. pylori infection. EXPERT OPINION MDR H. pylori is increasing worldwide and its prevalence varies both between continents and countries. High consumption and misuse of antibiotics, H. pylori treatment failures and bacterial factors such as mutations, efflux pumps and biofilms are among the factors associated with MDR. Important steps for confronting the rise of MDR H. pylori strains should follow the principles of antibiotic stewardship, i.e. eradication regimens should be optimized with regard to all aspects of therapy, including drugs, doses, formulation, frequency of administration, administration in relation to meals and duration of therapy that reliably achieve at least 90% (preferably >95%) cure rates in adherent patients with susceptible infections.
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Affiliation(s)
- Theodore Rokkas
- Gastroenterology Clinic, Henry Dunant Hospital, Athens, Greece
- Medical School, European University of Cyprus, Nicosia, Cyprus
| | - Konstantinos Ekmektzoglou
- Gastroenterology Clinic, Henry Dunant Hospital, Athens, Greece
- Medical School, European University of Cyprus, Nicosia, Cyprus
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14
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Wang Y, Li Y, Gong Y, Dong Y, Sun J, Chen M. Antibiotic resistance characteristics and risk factors analysis of Helicobacter pylori strains isolated from patients in Liaoning Province, an area in North China. PeerJ 2023; 11:e15268. [PMID: 37214095 PMCID: PMC10198150 DOI: 10.7717/peerj.15268] [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: 12/05/2022] [Accepted: 03/29/2023] [Indexed: 05/24/2023] Open
Abstract
Background The prevalence of Helicobacter pylori (H. pylori) keeps rising while the eradication rate continues to decline due to the increasing antibiotic resistance. Regional variations of antimicrobial resistance to H. pylori have been recommended by guidelines in recent years. This study aims to investigate the antibiotic resistance rate of H. pylori and its association with infected subjects' characteristics in Liaoning Province, an area in north China. Methods Gastric tissues from 178 H. pylori positive participants without previous antibiotic use within four weeks were collected for H. pylori culture. Antibiotic susceptibility to furazolidone (AOZ), tetracycline (TC), levofloxacin (LFX), metronidazole (MET), clarithromycin (CLA), and amoxicillin (AMX) were examined with the agar dilution method. Associations between H. pylori resistance and patient characteristics were further analysed. Results No resistance was observed in AOZ or TC. For LFX, MET, CLA, and AMX, the overall resistance rates were 41.10%, 79.14%, 71.78%, and 22.09% respectively. There were significant differences between resistance to CLA and MALToma (P = 0.021), and between resistance to MET and age (P < 0.001). Conclusions The primary resistant rates of LEX, MET, CLA, and AMX were relatively high in Liaoning. Treatment effectiveness improvement could be achieved by prior antimicrobial susceptibility tests before antibiotic prescription.
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Affiliation(s)
- Yanmeng Wang
- Gastroenterology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yiling Li
- Gastroenterology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yuehua Gong
- Key Laboratory of GI Cancer Etiology and Prevention, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yuzhen Dong
- Gastroenterology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Jing Sun
- Gastroenterology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Moye Chen
- Gastroenterology, The First Hospital of China Medical University, Shenyang, Liaoning, China
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Aktualisierte S2k-Leitlinie Helicobacter
pylori und gastroduodenale Ulkuskrankheit der Deutschen Gesellschaft für Gastroenterologie, Verdauungs- und Stoffwechselkrankheiten (DGVS) – Juli 2022 – AWMF-Registernummer: 021–001. ZEITSCHRIFT FUR GASTROENTEROLOGIE 2023; 61:544-606. [PMID: 37146633 DOI: 10.1055/a-1975-0414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
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16
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Correia C, Almeida N, Leal C, Branquinho D, Fernandes A, Gravito-Soares E, Calhau C, Bastos I, Vasconcelos H, Figueiredo P. Single-capsule bismuth-based quadruple therapy as a rescue therapy for Helicobacter pylori eradication. Scand J Gastroenterol 2023; 58:227-231. [PMID: 36189844 DOI: 10.1080/00365521.2022.2119097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
INTRODUCTION Helicobacter pylori (H. pylori) infection is highly prevalent in Portugal and its eradication is formally recommended. However, the indiscriminate use of antimicrobials has led to a drastic rise in antibiotic resistance, with the failure of traditional eradication schemes. A single-capsule bismuth-based quadruple therapy became recently available in Portugal. This study aims to evaluate the efficacy and safety of a bismuth-based quadruple therapy as a second-line or rescue therapy. PATIENTS AND METHODS This was a multicentric study. All consecutive patients that were treated with bismuth-based quadruple therapy, as second-line or salvage treatment between July 2017 and April 2019 were enrolled. Their medical records were reviewed and clinical and laboratorial parameters, as well as data on treatment efficacy and adverse events were retrieved. Patients were also contacted by phone after treatment to confirm compliance, adverse events, and global satisfaction with this specific therapy. RESULTS A total of 151 subjects were included (female-68.9%; mean age-56 ± 13.5 years). Patients were previously submitted to 212 eradication schemes (Median-1; 1-5; IQR:4): 33.5% triple clarithromycin-based, 25% sequential, 7.5% concomitant, 5.2% others, and in 28.8% it was not possible to know the previous eradication scheme(s) followed by the patient. The PPI of choice was esomeprazole (39.7%), followed by omeprazole (27.8%). Compliance was achieved in 93.4% and the overall eradication rate was 90.1% (95% CI: 84.6-94.2). Treatment-related adverse effects were experienced by 63 patients (41.7%; 95% CI: 34-49.7), being mild in 29, moderate in 19, and severe in 15. The main drawbacks of the treatment, from the patient's perspective, were the high price (47%) and the adverse effects (16.6%). Failure to eradicate H. pylori was correlated with the following: previous rifabutin-based scheme (0 vs. 100%; p = 0.010) and a higher number of previous treatment schemes (1.5 ± 0.7 vs. 2.3 ± 1.2; p < 0.001). CONCLUSION In this South-European country a single-capsule bismuth-based quadruple therapy is an excellent option as a second-line or rescue therapy, with acceptable compliance and side effects.
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Affiliation(s)
- Catarina Correia
- Gastroenterology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Nuno Almeida
- Gastroenterology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal.,Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Carina Leal
- Gastroenterology Department, Leiria Hospital Centre, Leiria, Portugal
| | - Diogo Branquinho
- Gastroenterology Department, Baixo Vouga Hospital Centre, Aveiro, Portugal
| | | | - Elisa Gravito-Soares
- Gastroenterology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal.,Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Carlos Calhau
- Gastroenterology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Isabel Bastos
- Gastroenterology Department, Baixo Vouga Hospital Centre, Aveiro, Portugal
| | | | - Pedro Figueiredo
- Gastroenterology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal.,Faculty of Medicine, University of Coimbra, Coimbra, Portugal
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Borka Balas R, Meliț LE, Mărginean CO. Current Worldwide Trends in Pediatric Helicobacter pylori Antimicrobial Resistance. CHILDREN (BASEL, SWITZERLAND) 2023; 10:403. [PMID: 36832532 PMCID: PMC9954810 DOI: 10.3390/children10020403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 02/14/2023] [Accepted: 02/16/2023] [Indexed: 02/22/2023]
Abstract
Helicobacter pylori (H. pylori) has acquired several resistance mechanisms in order to escape the currently used eradication regimens such as mutations that impair the replication, recombination, and transcription of DNA; the antibiotics capability to interact with protein synthesis and ribosomal activity; the adequate redox state of bacterial cells; or the penicillin-binding proteins. The aim of this review was to identify the differences in pediatric H. pylori antimicrobial-resistance trends between continents and countries of the same continent. In Asian pediatric patients, the greatest antimicrobial resistance was found to metronidazole (>50%), probably due to its wide use for parasitic infections. Aside from the increased resistance to metronidazole, the reports from different Asian countries indicated also high resistance rates to clarithromycin, suggesting that ciprofloxacin-based eradication therapy and bismuth-based quadruple therapy might be optimal choices for the eradication of H. pylori in Asian pediatric population. The scarce evidence for America revealed that H. pylori strains display an increased resistance to clarithromycin (up to 79.6%), but not all studies agreed on this statement. Pediatric patients from Africa also presented the greatest resistance rate to metronidazole (91%), but the results in terms of amoxicillin remain contradictory. Nevertheless, the lowest resistance rates in most of the African studies were found for quinolones. Among European children, the most frequent antimicrobial resistance was also noticed for metronidazole and clarithromycin (up to 59% and 45%) but with a predominance for clarithromycin as compared to other continents. The differences in antibiotic use among continents and countries worldwide is clearly responsible for the discrepancies regarding H. pylori antimicrobial-resistance patterns, emphasizing the crucial role of global judicious antibiotic use in order to control the increasing resistance rates worldwide.
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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, Gheorghe Marinescu Street, No. 38, 540136 Târgu Mureș, Romania
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Cortez Nunes F, Teixeira S, Maia RL, Amorim I, Letra Mateus T. Perception and Knowledge of Portuguese Veterinarians about the Zoonotic Transmission of Helicobacter pylori and Helicobacter suis: The Need for One Health Intervention. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:15087. [PMID: 36429805 PMCID: PMC9690467 DOI: 10.3390/ijerph192215087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 11/08/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
Helicobacter species can colonize the gastrointestinal tract of both humans and animals, and are associated with gastrointestinal and extra-gastrointestinal diseases. Some studies indicate that animals, health professionals, and people in close contact with animals might be at higher risk for infection with gastric Helicobacter spp. Considering that veterinarians are professionals at risk for infection with zoonotic gastric Helicobacters and are also seen by many as health communicators concerning zoonoses, the aim of this study was to evaluate the Portuguese veterinarians' perception and knowledge of Helicobacter spp. infection and its zoonotic risk/potential. Therefore, a structured questionnaire composed of 34 dichotomic, multiple-choice, rating scale, matrix, drop-down, and open-ended questions was developed and given to Portuguese veterinarians via an online platform from May 2021 to July 2021, and statistical analysis was used to obtain results. There was a total of 149 respondents, most of them (73.8%) being females. Evidently, Portuguese veterinarians have a limited perception regarding Helicobacter spp. infections. Of the respondents that "have heard of Helicobacter", 17.6% do not know which animal species can be affected by it. Most of the companion animal veterinarians (76.2%) do not consider Helicobacter spp. infection a differential diagnosis when evaluating animals with gastritis. A significant percentage (37.2%) of the respondents that have "heard of H. suis" do not consider it a zoonotic bacterium. There is a need for education and sensitization of veterinarians regarding the potential zoonotic risk of Helicobacter spp. in order to elucidate these professionals to this One Health issue, as the number of reports of non-Helicobacter pylori Helicobacter in livestock, companion, and wild animals is increasing.
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Affiliation(s)
- Francisco Cortez Nunes
- School of Medicine and Biomedical Sciences (ICBAS), University of Porto, 4050-313 Porto, Portugal
- Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135 Porto, Portugal
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), 4200-135 Porto, Portugal
| | - Silvia Teixeira
- School of Medicine and Biomedical Sciences (ICBAS), University of Porto, 4050-313 Porto, Portugal
- Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135 Porto, Portugal
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), 4200-135 Porto, Portugal
| | - Rui Leandro Maia
- UFP Energy, Environment and Health Research Unit (FP-ENAS), Universidade Fernando Pessoa, Praça 9 de Abril, 349, 4249-004 Porto, Portugal
- CITCEM—Centro de Investigação Transdisciplinar «Cultura, Espaço e Memória», Faculdade de Letras da Universidade do Porto, Via Panorâmica s/n, 4150-564 Porto, Portugal
| | - Irina Amorim
- School of Medicine and Biomedical Sciences (ICBAS), University of Porto, 4050-313 Porto, Portugal
- Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135 Porto, Portugal
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), 4200-135 Porto, Portugal
| | - Teresa Letra Mateus
- CISAS—Centre for Research and Development in Agrifood Systems and Sustainability, Escola Superior Agrária, Instituto Politécnico de Viana do Castelo, 4900-347 Viana do Castelo, Portugal
- EpiUnit—Instituto de Saúde Pública da Universidade do Porto, Laboratory for Integrative and Translational Research in Population Health (ITR), Rua das Taipas, nº 135, 4050-091 Porto, Portugal
- Veterinary and Animal Research Centre (CECAV), UTAD, Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS) Quinta de Prados, 5000-801 Vila Real, Portugal
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19
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Alarming antibiotics resistance of Helicobacter pylori from children in Southeast China over 6 years. Sci Rep 2022; 12:17754. [PMID: 36272980 PMCID: PMC9588048 DOI: 10.1038/s41598-022-21661-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 09/29/2022] [Indexed: 01/19/2023] Open
Abstract
The increasing rates of antibiotic resistance in Helicobacter pylori (H. pylori) are a major concern of the decreasing eradication rate. Large-scale and long-period studies on antimicrobial susceptibility of H. pylori in children are limited. This study aimed to describe the temporal changes of antibiotic resistance among children in southeast China. Gastric biopsies obtained from children were cultured for H. pylori from 2015 to 2020. Susceptibility to clarithromycin (CLA), amoxicillin (AML), metronidazole (MTZ), furazolidone (FZD), tetracycline (TET) and levofloxacin (LEV) was tested. Data from 2012 to 2014 reported previously were obtained for comparing the change in temporal trends of antibiotic resistance. A total of 1638 (52.7%) H. pylori strains were isolated from 3111 children recruited. The resistance rates to CLA, MTZ and LEV were 32.8%, 81.7% and 22.8%, respectively. There were 52.9% strains resistant to single resistance, 28.7% to double resistance, and 9.0% to triple resistance. The total resistance rate and resistance rates to CLA, MTZ, LEV, CLA + LEV and CLA + MTZ + LEV increased annually in a linear manner. All resistant patterns except single resistance increased obviously from 2015 to 2017 and 2018 to 2020 compared to that from 2012 to 2014. Double resistance to CLA + MTZ increased significantly with age. The resistance rate to CLA and triple resistance to CLA, MTZ and LEV increased in children with prior H. pylori treatment than that from children without prior treatment. The antibiotic resistance rates of H. pylori were high in a large pediatric population in southeast China from 2015 to 2020. Individual treatment based on susceptibility test is imperative and optimal regimens should be chosen in H. pylori eradication therapy.
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Cortez Nunes F, Letra Mateus T, Taillieu E, Teixeira S, Carolino N, Rema A, De Bruyckere S, Gärtner F, Haesebrouck F, Amorim I. Molecular detection of Helicobacter spp. and Fusobacterium gastrosuis in pigs and wild boars and its association with gastric histopathological alterations. Vet Res 2022; 53:78. [PMID: 36209119 PMCID: PMC9548099 DOI: 10.1186/s13567-022-01101-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 09/06/2022] [Indexed: 06/22/2024] Open
Abstract
Besides Helicobacter pylori, a Gram-negative bacterium that may cause gastric disorders in humans, non-Helicobacter pylori helicobacters (NHPH) may also colonize the stomach of humans and animals. In pigs, H. suis can induce gastritis and may play a role in gastric ulcer disease, possibly in association with Fusobacterium gastrosuis. In the present study, gastric samples from 71 slaughtered pigs and 14 hunted free range wild boars were tested for the presence of DNA of F. gastrosuis and gastric Helicobacter species associated with pigs, dogs cats and humans, using species-specific PCR assays, followed by sequencing of the amplicon. These gastric samples were also histopathologically evaluated. Almost all the pigs presented gastritis (95.8%). Helicobacter spp. were detected in 78.9% and F. gastrosuis in 35.2% of the animals. H. suis was the most frequently identified Helicobacter species (57.7% of the animals), followed by a H. pylori-like species (50.7%) and less often H. salomonis and H. felis (each in 2.8% of the animals). H. suis was most often detected in the glandular (distal) part of the stomach (pars oesophagea 9.9%, oxyntic mucosa 35.2%, antral mucosa 40.8%), while the H. pylori-like species was mainly found in the non-glandular (proximal) part of the stomach (pars oesophagea 39.4%, oxyntic mucosa 14.1%, antral mucosa 4.2%). The great majority of wild boars were also affected with gastritis (71.4%) and Helicobacter spp. and F. gastrosuis were detected in 64.3% and 42.9% of the animals, respectively. H. bizzozeronii and H. salomonis were the most frequently detected Helicobacter species, while a H. pylori-like species and H. suis were only occasionally identified. These findings suggest that these microorganisms can colonize the stomach of both porcine species and may be associated with gastric pathology. This should, however, be confirmed through bacterial isolation. This is the first description of the presence of F. gastrosuis DNA in the stomach of wild boars and a H. pylori-like species in the pars oesophagea of the porcine stomach.
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Affiliation(s)
- Francisco Cortez Nunes
- School of Medicine and Biomedical Sciences (ICBAS), University of Porto, 4050-313, Porto, Portugal.,Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135, Porto, Portugal.,Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), 4200-135, Porto, Portugal
| | - Teresa Letra Mateus
- CISAS-Centre for Research and Development in Agrifood Systems and Sustainability, Escola Superior Agrária, Instituto Politécnico de Viana do Castelo, 4900-347, Viana do Castelo, Portugal.,Laboratory for Integrative and Translational Research in Population Health (ITR), EpiUnit, Instituto de Saúde Pública da Universidade do Porto, Rua das Taipas, no. 135, 4050-091, Porto, Portugal.,Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS) Quinta de Prados, Veterinary and Animal Research Centre (CECAV), UTAD, 5000-801, Vila Real, Portugal
| | - Emily Taillieu
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Sílvia Teixeira
- School of Medicine and Biomedical Sciences (ICBAS), University of Porto, 4050-313, Porto, Portugal.,Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135, Porto, Portugal.,Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), 4200-135, Porto, Portugal
| | - Nuno Carolino
- Department of Veterinary Sciences, Vasco da Gama Research Center (CIVG), Vasco da Gama University School, Coimbra, Portugal.,Centre for Interdisciplinary Research in Animal Health (CIISA), University of Lisboa, Lisbon, Portugal.,National Institute for Agrarian and Veterinarian Research, I.P., Vale de Santarém, Portugal
| | - Alexandra Rema
- School of Medicine and Biomedical Sciences (ICBAS), University of Porto, 4050-313, Porto, Portugal
| | - Sofie De Bruyckere
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Fátima Gärtner
- Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135, Porto, Portugal.,Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), 4200-135, Porto, Portugal
| | - Freddy Haesebrouck
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Irina Amorim
- School of Medicine and Biomedical Sciences (ICBAS), University of Porto, 4050-313, Porto, Portugal. .,Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135, Porto, Portugal. .,Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), 4200-135, Porto, Portugal.
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21
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Mesquita A, Rocha-Castro C, Guimarães D, Costa J, Soutinho J, Taveira-Gomes T. Multicentric Study to Assess Helicobacter pylori Incidence, Patient Reported Adverse Events, Compliance and Effectiveness, in Real-World Setting. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:12847. [PMID: 36232149 PMCID: PMC9566079 DOI: 10.3390/ijerph191912847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/27/2022] [Accepted: 09/30/2022] [Indexed: 06/16/2023]
Abstract
Helicobacter pylori ( H. pylori) plays an important role in chronic gastritis and globally it is estimated to be present in half of the world's population. In Portugal, prevalence reaches 85% and its eradication is recommended using quadruple antibiotic therapy, with or without bismuth. We intended to characterize the prescribed treatments evaluating effectiveness, adverse outcomes and compliance in a real-world setting in a primary care unit. A prospective multicenter observational cohort study was developed in five primary care units of Braga, Portugal. Patients diagnosed with H. pylori infection from August 2021 to January 2022 were included. Data were collected by interview (3 weeks after treatment) and review of medical records. Comparison between two groups of treatment and multivariable analysis was conducted. We estimated 13.4 cases per 1000 adults/year from 185 diagnoses. Therapy with bismuth was the most prescribed (83.8%) with a 96.7% eradication rate. There were no significant differences between treatments. Adverse events were reported in 73.8% of inquiries and female patients were associated with higher reports of nausea (p = 0.03) and metallic taste (p = 0.02). Both eradication schemes were effective and secure. The higher rate of adverse outcomes should be validated but it could influence the debate concerning treating all patients, especially in low gastric cancer-prevalence regions.
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Affiliation(s)
- André Mesquita
- USF Sanus Carandá, ACeS Cávado I-Braga, 4715-402 Braga, Portugal
| | | | - Daniela Guimarães
- USF Dr. Pelaez Carones, ACeS Cávado I-Braga, 4715-402 Braga, Portugal
| | - Joana Costa
- USF Gualtar, ACeS Cávado I-Braga, 4710-078 Braga, Portugal
| | - Joana Soutinho
- USF MaxiSaúde, ACeS Cávado I-Braga, 4700-036 Braga, Portugal
| | - Tiago Taveira-Gomes
- MTG Research and Development Lab, 4200-604 Porto, Portugal
- Department of Community Medicine, Information and Decision in Health, Faculty of Medicine, University of Porto, 4050-313 Porto, Portugal
- Center for Health Technology and Services Research (CINTESIS), 4200-450 Porto, Portugal
- Faculty of Health Sciences, University Fernando Pessoa (FCS-UFP), 4249-004 Porto, Portugal
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22
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Karbalaei M, Keikha M, Talebi Bezmin Abadi A. Prevalence of Primary Multidrug-resistant Helicobacter pylori in Children: A Systematic Review and Meta-analysis. Arch Med Res 2022; 53:634-640. [PMID: 36089418 DOI: 10.1016/j.arcmed.2022.08.010] [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: 05/24/2022] [Revised: 08/16/2022] [Accepted: 08/25/2022] [Indexed: 11/02/2022]
Abstract
BACKGROUND The emergence and global spread of multidrug-resistant Helicobacter pylori (MDR H. pylori) is a major health problem in children, which can increase the risk of serious complications such as gastric cancer. The aim of this study was to determine the prevalence of primary MDR H. pylori in children via a comprehensive systematic literature review and meta-analysis. METHODS All potential studies were collected from international databases like: ISI Web of Science, Embase, PubMed, Google Scholar, and Scopus from 2011-July 24, 2022. Ultimately, primary MDR H. pylori in children was measured as an event rate with corresponding 95% confidence intervals. RESULTS A total of 19 studies met the inclusion criteria. The overall prevalence of primary MDR H. pylori in children was measured at 6.0% (95% CI: 3.1-11.6); There was a significant difference in primary MDR H. pylori resistance rates between Asian populations and Western countries. CONCLUSIONS The global spread of MDR H. pylori strains could significantly limit the options of anti-H. pylori treatment regimens. The frequency of primary MDR H. pylori infection differs between various geographical regions. Thus, drug susceptibility testing and the eradication of H. pylori infection can effectively reduce and control the spread of H. pylori antibiotic resistance throughout the world.
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Affiliation(s)
- Mohsen Karbalaei
- Department of Microbiology and Virology, School of Medicine, Jiroft University of Medical Sciences, Jiroft, Iran
| | - Masoud Keikha
- Department of Microbiology and Virology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amin Talebi Bezmin Abadi
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
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23
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Chtourou L, Moalla M, Mnif B, Smaoui H, Gdoura H, Boudabous M, Mnif L, Amouri A, Hammami A, Tahri N. Prevalence of Helicobacter pylori resistance to clarithromycin in Tunisia. J Med Microbiol 2022; 71. [PMID: 36006691 DOI: 10.1099/jmm.0.001561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Background. Helicobacter pylori (H. pylori) resistance to clarithromycin is increasing worldwide. Data on the prevalence of H. pylori resistance are limited in Tunisia.Gap statement. Given that H. pylori resistance to clarithromycin has not been studied in Tunisia since 2010, there was a need to determinate its prevalence and the principal mutations implicated in this resistance.Aim. The aims were to define the prevalence of H. pylori infection among symptomatic patients and to determinate the level of clarithromycin resistance among these patients and the main mutations conferring this resistance.Methods. We conducted a cross-sectional study from March 2017 to February 2020 in the Hepato-Gastroenterology Department of Hedi Chaker University Hospital in Sfax that included 124 Tunisian patients who underwent gastroduodenal endoscopy with biopsies. Mutations conferring resistance to clarithromycin were detected using the Allplex H. pylori and ClariR PCR Assay.Results. Out of 124 biopsies, 101 (81.5 2 %) were PCR-positive for H. pylori. Mutations conferring resistance to clarithromycin were detected in 30/95 (31.6 %) of patients. The rate of primary resistance was 25.3 % and of secondary resistance 62.5 %. The most frequently detected mutation was A2143G (86, 90%) followed by A2142G (11, 36%). Seven patients had a double mutation A2143G-A2142G. The factors independently associated with resistance to clarithromycin were diabetes, high blood pressure, the presence of a bulbar ulcer on endoscopy and the presence of gastric atrophy on histology.Conclusion. Detection of more than 25 % of strains with clarithromycin resistance mutations makes the H. pylori first-line treatment with clarithromycin questionable in our setting, and a review of empirical treatment of H. pylori is urgently needed.
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Affiliation(s)
- Lassaad Chtourou
- Department of Gastroenterology and Hepatology, Hedi Chaker University Hospital, Sfax, Tunisia.,Sfax Medical School, University of Sfax, Sfax, Tunisia
| | - Manel Moalla
- Department of Gastroenterology and Hepatology, Hedi Chaker University Hospital, Sfax, Tunisia.,Sfax Medical School, University of Sfax, Sfax, Tunisia
| | - Basma Mnif
- Sfax Medical School, University of Sfax, Sfax, Tunisia.,Department of Microbiology, Habib Bourguiba University Hospital, Sfax, Tunisia
| | - Hend Smaoui
- Department of Gastroenterology and Hepatology, Hedi Chaker University Hospital, Sfax, Tunisia.,Sfax Medical School, University of Sfax, Sfax, Tunisia
| | - Hela Gdoura
- Department of Gastroenterology and Hepatology, Hedi Chaker University Hospital, Sfax, Tunisia.,Sfax Medical School, University of Sfax, Sfax, Tunisia
| | - Mona Boudabous
- Department of Gastroenterology and Hepatology, Hedi Chaker University Hospital, Sfax, Tunisia.,Sfax Medical School, University of Sfax, Sfax, Tunisia
| | - Leila Mnif
- Department of Gastroenterology and Hepatology, Hedi Chaker University Hospital, Sfax, Tunisia.,Sfax Medical School, University of Sfax, Sfax, Tunisia
| | - Ali Amouri
- Department of Gastroenterology and Hepatology, Hedi Chaker University Hospital, Sfax, Tunisia.,Sfax Medical School, University of Sfax, Sfax, Tunisia
| | - Adnene Hammami
- Sfax Medical School, University of Sfax, Sfax, Tunisia.,Department of Microbiology, Habib Bourguiba University Hospital, Sfax, Tunisia
| | - Nabil Tahri
- Department of Gastroenterology and Hepatology, Hedi Chaker University Hospital, Sfax, Tunisia.,Sfax Medical School, University of Sfax, Sfax, Tunisia
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24
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Motta-Raymundo A, Rosmaninho P, Santos DF, Ferreira RD, Silva SP, Ferreira C, Sousa AE, Silva SL. Contribution of Helicobacter pylori to the Inflammatory Complications of Common Variable Immunodeficiency. Front Immunol 2022; 13:834137. [PMID: 35711410 PMCID: PMC9193800 DOI: 10.3389/fimmu.2022.834137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 05/02/2022] [Indexed: 11/13/2022] Open
Abstract
Common Variable Immunodeficiency (CVID), the most prevalent symptomatic primary immunodeficiency, is frequently associated with severe inflammatory complications that determine its morbidity and mortality. We hypothesize that Helicobacter pylori (HP), a very common worldwide infection, may contribute to the clinical and immune phenotype of CVID. We stratified 41 CVID patients into HP+ (n=26) and HPneg (n=15) groups, according to previous urease breath test and/or gastric biopsies, and compared their clinical manifestations and immune profile evaluated by flow cytometry. No genetic variants with known potential impact in HP infection were found upon WES/WGS. Gastric complications were significantly more frequent in HP+ patients. Importantly, the six CVID patients with gastric cancer were infected with HP. In contrast, a significantly higher frequency of cytopenias was observed in the HPneg. Moreover, HP+ did not feature higher prevalence of organ auto-immunity, as well as of lung, liver or intestinal inflammatory manifestations. We observed the same B-cell profiles in HP+ and HPneg groups, accompanied by marked CD4 and CD8 T-cell activation, increased IFNγ production, and contraction of naïve compartments. Notably, HP+ patients featured low CD25 despite preserved Foxp3 levels in CD4 T cells. Overall, HP impact in CVID inflammatory complications was mainly restricted to the gastric mucosa, contributing to increased incidence of early onset gastric cancer. Thus, early HP screening and eradication should be performed in all CVID patients irrespective of symptoms.
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Affiliation(s)
- Adriana Motta-Raymundo
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Centro de Imunodeficiências Primárias, Centro Académico de Medicina de Lisboa, Lisboa, Portugal
| | - Pedro Rosmaninho
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Centro de Imunodeficiências Primárias, Centro Académico de Medicina de Lisboa, Lisboa, Portugal
| | - Diana F. Santos
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Centro de Imunodeficiências Primárias, Centro Académico de Medicina de Lisboa, Lisboa, Portugal
| | - Ruben D. Ferreira
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Centro de Imunodeficiências Primárias, Centro Académico de Medicina de Lisboa, Lisboa, Portugal
| | - Sara P. Silva
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Centro de Imunodeficiências Primárias, Centro Académico de Medicina de Lisboa, Lisboa, Portugal
- Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Lisboa, Portugal
| | - Cristina Ferreira
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Centro de Imunodeficiências Primárias, Centro Académico de Medicina de Lisboa, Lisboa, Portugal
- Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Lisboa, Portugal
| | - Ana E. Sousa
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Centro de Imunodeficiências Primárias, Centro Académico de Medicina de Lisboa, Lisboa, Portugal
| | - Susana L. Silva
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Centro de Imunodeficiências Primárias, Centro Académico de Medicina de Lisboa, Lisboa, Portugal
- Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Lisboa, Portugal
- *Correspondence: Susana L. Silva,
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Libânio D, Ortigão R, Pimentel-Nunes P, Dinis-Ribeiro M. Improving the Diagnosis and Treatment of Early Gastric Cancer in the West. GE-PORTUGUESE JOURNAL OF GASTROENTEROLOGY 2021; 29:299-310. [PMID: 36159192 PMCID: PMC9485920 DOI: 10.1159/000520529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 10/02/2021] [Indexed: 11/19/2022]
Abstract
Gastric cancer is the third leading cause of cancer-related death. In Western countries, its lower prevalence and the absence of mass screening programmes contribute to late diagnosis and a slower implementation of minimally invasive treatments. A secondary prevention strategy through endoscopic surveillance of patients at high risk of intestinal-type gastric adenocarcinoma or by screening gastric cancer within colorectal screening programmes is cost-effective in intermediate-risk countries, though the identification of these patients remains challenging. Virtual chromoendoscopy with narrow-band imaging improves the accuracy of endoscopic diagnosis, significantly increasing the sensitivity for intestinal metaplasia while preserving specificity. Endoscopic grading of gastric intestinal metaplasia is feasible, correlates well with histological staging systems and also with gastric neoplasia risk and can be used to stratify risk. Endoscopic submucosal dissection (ESD) in the West achieves efficacy and safety outcomes similar to those reported for Eastern countries, and the long-term disease-specific survival is higher than 95%. A prospective comparative study with gastrectomy confirms its higher safety and its benefits concerning health-related quality of life. However, ESD is associated with a 5% risk of postprocedural bleeding and a 20% risk of non-curative resection. The knowledge of risk factors for adverse events and non-curative resection can improve patient selection. The risk of metachronous lesions after ESD is high (3–5% per year), and endoscopic surveillance is needed. The management of patients with non-curative resection can be optimized using risk scoring systems for lymph node metastasis.
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Affiliation(s)
- Diogo Libânio
- Gastroenterology Department, Portuguese Oncology Institute of Porto, Porto, Portugal
- MEDCIDS − Department of Community Medicine, Health Information and Decision of the Faculty of Medicine of the University of Porto, Porto, Portugal
- * Diogo Libânio,
| | - Raquel Ortigão
- Gastroenterology Department, Portuguese Oncology Institute of Porto, Porto, Portugal
| | - Pedro Pimentel-Nunes
- Gastroenterology Department, Portuguese Oncology Institute of Porto, Porto, Portugal
- MEDCIDS − Department of Community Medicine, Health Information and Decision of the Faculty of Medicine of the University of Porto, Porto, Portugal
| | - Mário Dinis-Ribeiro
- Gastroenterology Department, Portuguese Oncology Institute of Porto, Porto, Portugal
- MEDCIDS − Department of Community Medicine, Health Information and Decision of the Faculty of Medicine of the University of Porto, Porto, Portugal
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26
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Keikha M, Askari P, Ghazvini K, Karbalaei M. Levofloxacin-based therapy as an efficient alternative for eradicating Helicobacter pylori infection in Iran: a systematic review and meta-analysis. J Glob Antimicrob Resist 2021; 29:420-429. [PMID: 34788690 DOI: 10.1016/j.jgar.2021.10.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 10/22/2021] [Accepted: 10/24/2021] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVES Despite excessive resistance of Helicobacter pylori to clarithromycin among Iranian population, unfortunately, clarithromycin-based therapy is still prescribed in Iran. Recent studies have shown high rates of H. pylori eradication in patients treated with levofloxacin. The main purpose of this study was to compare the effect of levofloxacin with clarithromycin on the eradication of H. pylori infection in Iranian population. METHODS A comprehensive meta-analysis was done for the relevant cohort studies and clinical trials to compare the therapeutic effects of levofloxacin with clarithromycin in Iranian population. We pooled the data using odds ratio corresponding to 95% confidence intervals to find the clinical efficacy of levofloxacin versus clarithromycin to treat H. pylori infection. The heterogeneity and publication bias were also measured for the included studies. RESULTS A total of 13 studies were included in the quantitative synthesis. Eradication rate in patients receiving levofloxacin and clarithromycin were 75% and 66.3%, respectively (OR: 1.76; 95% CI: 1.40-2.20). In addition, in the subgroup analysis, it was confirmed that cure rate is relatively higher in levofloxacin-treated cases. However, there is significant heterogeneity as well as publication bias, thus, the results need to be interpreted with caution. CONCLUSIONS We found that the success of levofloxacin treatment was significantly higher than that of clarithromycin. Therefore, it is suggested that clarithromycin-based triple therapy be replaced by levofloxacin-based triple therapy in countries with high resistance rate to clarithromycin such as Iran. Nevertheless, findings of the present study need to be approved with larger investigation on Iranian population.
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Affiliation(s)
- Masoud Keikha
- Antimicrobial Resistance Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Microbiology and Virology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Parvin Askari
- Department of Microbiology, School of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Kiarash Ghazvini
- Antimicrobial Resistance Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Microbiology and Virology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohsen Karbalaei
- Department of Microbiology and Virology, Faculty of Medicine, Jiroft University of Medical Sciences, Jiroft, Iran.
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27
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Gastroprotective effects and metabolomic profiling of Chasteberry fruits against indomethacin-induced gastric injury in rats. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104732] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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28
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Presence of Helicobacter pylori and H. suis DNA in Free-Range Wild Boars. Animals (Basel) 2021; 11:ani11051269. [PMID: 33925029 PMCID: PMC8146769 DOI: 10.3390/ani11051269] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/23/2021] [Accepted: 04/26/2021] [Indexed: 12/17/2022] Open
Abstract
Simple Summary Helicobacter pylori and H. suis are associated with gastric pathologies in humans. To obtain better insights into the potential role of wild boars as reservoirs of these pathogens, gastric samples of 14 animals were tested for the presence of H. pylori and H. suis DNA. Two wild boars were found PCR-positive for H. pylori and one for H. suis. This indicates that these microorganisms may colonize the stomach of wild boars. Abstract Helicobacter pylori (H. pylori) is a Gram-negative bacterium that infects half of the human population worldwide, causing gastric disorders, such as chronic gastritis, gastric or duodenal ulcers, and gastric malignancies. Helicobacter suis (H. suis) is mainly associated with pigs, but can also colonize the stomach of humans, resulting in gastric pathologies. In pigs, H. suis can induce gastritis and seems to play a role in gastric ulcer disease, seriously affecting animal production and welfare. Since close interactions between domestic animals, wildlife, and humans can increase bacterial transmission risk between species, samples of gastric tissue of 14 free range wild boars (Sus scrofa) were evaluated for the presence of H. pylori and H. suis using PCR. Samples from the antral gastric mucosa from two animals were PCR-positive for H. pylori and another one for H. suis. These findings indicate that these microorganisms were able to colonize the stomach of wild boars and raise awareness for their putative intervention in Helicobacter spp. transmission cycle.
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29
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Zhou JJ, Shi X, Zheng SP, Tang D, Cai T, Yao Y, Wang F. Efficacy of bismuth-based quadruple therapy for eradication of Helicobacter pylori infection based on previous antibiotic exposure: A large-scale prospective, single-center clinical trial in China. Helicobacter 2020; 25:e12755. [PMID: 32914914 DOI: 10.1111/hel.12755] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 07/29/2020] [Accepted: 08/06/2020] [Indexed: 01/30/2023]
Abstract
OBJECTIVE This study aims to evaluate the efficacy and safety of three bismuth-based quadruple regimens for eradication of Helicobacter pylori (H pylori) infection in a large number of H pylori-positive patients with or without previous eradication therapy. METHODS Consecutive adult patients with H pylori infection, regardless of previous eradication therapy, were eligible for the present study. Three bismuth-based quadruple regimens were selected according to the past history of antibiotics use: (A) esomeprazole, amoxicillin, clarithromycin, and colloidal bismuth tartrate; (B) esomeprazole, amoxicillin, furazolidone, and colloidal bismuth tartrate; and (C) esomeprazole, doxycycline, furazolidone, and colloidal bismuth tartrate. All patients received a 14-day course of treatment, and 13 C/14 C urea breath test was utilized at four weeks after the completion of treatment to determine the H pylori eradication. Then, the eradication rates were calculated in terms of intention-to-treat (ITT) and per-protocol (PP) analyses. Adverse events (AEs) were recorded during the treatment. RESULTS Overall, 1,226 patients were recruited, and 331, 57, and 838 patients were allocated to receive regimens A, B, and C, respectively. The H pylori eradication rates were 84.0%, 82.5%, and 82.9% (ITT) and 94.6%, 92.2%, and 93.7% (PP), respectively, in regimens A, B, and C. However, there was no significant difference among these three regimens. The incidence of AEs was 4.6% for all patients during the study, that is, 3.3%, 10.5%, and 4.7% for regimens A, B, and C, respectively. All AEs were mild and recovered at the follow-up visit. CONCLUSION All three bismuth-based quadruple regimens based on the previous antibiotic use can achieve satisfactory eradication rates for H pylori infection and are safe.
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Affiliation(s)
- Jing-Jing Zhou
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Non-Resolving Inflammation and Cancer, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Xiao Shi
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Non-Resolving Inflammation and Cancer, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Shao-Peng Zheng
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Non-Resolving Inflammation and Cancer, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Dan Tang
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Non-Resolving Inflammation and Cancer, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Ting Cai
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Non-Resolving Inflammation and Cancer, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Yao Yao
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Non-Resolving Inflammation and Cancer, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Fen Wang
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Non-Resolving Inflammation and Cancer, The Third Xiangya Hospital, Central South University, Changsha, China
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30
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Georgopoulos S, Papastergiou V. An update on current and advancing pharmacotherapy options for the treatment of H. pylori infection. Expert Opin Pharmacother 2020; 22:729-741. [PMID: 33131337 DOI: 10.1080/14656566.2020.1845649] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Introduction: Eradication of Helicobacter pylori (H. pylori) becomes more challenging due to increasing antimicrobial resistance. Consequently, the performance of clarithromycin-containing triple therapies is now declining to unacceptable levels and should be abandoned unless a prior susceptibility test precludes clarithromycin resistance.Areas covered: This review summarizes updated evidence concerning new and advancing pharmacotherapy options for H. pylori eradication.Expert opinion: Due to the declining efficacy of legacy triple therapies, most guidelines recommend bismuth quadruple therapy as the best initial empiric treatment. Concomitant, sequential and hybrid therapies are remarkable bismuth-free quadruple options, provided that dual clarithromycin-metronidazole resistance is low. Levofloxacin-, rifabutin-, furazolidone- and sitafloxacin-containing regimens remain useful, particularly as salvage options. To eradicate H. pylori in line with the rules of antibiotic stewardship, susceptibility-guided treatment appears as the ideal approach. However, the feasibility and cost-effectiveness of universal pre-treatment susceptibility testing warrants further evaluation. Molecular testing methods promise convenient characterization of H. pylori antibiotic susceptibility. High-dose dual therapy (proton-pump-inhibitor plus amoxicillin) and vonoprazan, a more potent acid inhibitor that likely enhances the activity of amoxicillin, are promising alternatives that could decrease misuse of antibiotics. Addition of certain probiotics could somewhat increase the performance of H. pylori eradication regimens, while improving tolerability.
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Affiliation(s)
- Sotirios Georgopoulos
- Department of Gastroenterology, Athens Medical P. Faliron General Hospital, Athens, Greece
| | - Vasilios Papastergiou
- Department of Gastroenterology, "Konstantopoulion-Patision" General Hospital, Athens, Greece
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31
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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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32
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O'Connor A, Liou JM, Gisbert JP, O'Morain C. Review: Treatment of Helicobacter pylori Infection 2019. Helicobacter 2019; 24 Suppl 1:e12640. [PMID: 31486235 DOI: 10.1111/hel.12640] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/08/2019] [Indexed: 02/06/2023]
Abstract
This review summarizes important studies regarding Helicobacter pylori therapy published from May 2018 to May 2019. The main themes that emerge involve studies assessing the efficacy of bismuth-based regimens. While in recent years the efficacy of bismuth-based quadruple therapy as a second-line therapy has been clearly established, there is now substantial evidence that it is the best performing first-line therapy. Antibiotic resistance was again intensely studied this year, and a clear and dramatic increase in resistance is noted for clarithromycin and levofloxacin; most notably, it may not be possible to support these therapies in most regions of the world much longer without testing. The utility of vonoprazan as an alternative to proton-pump inhibitor therapy, especially in resistant and difficult to treat groups, has also been considered in greater detail this year, as well as means of supporting and enhancing adherence to therapy. Several studies showed that the diversity of gut microbiota was significantly altered shortly after H pylori eradication. However, the diversity was restored to pre-treatment state after 2 months in patients treated with triple therapy. More studies are warranted to assess the long-term changes of gut microbiota after H pylori eradication.
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Affiliation(s)
- Anthony O'Connor
- Department Of Gastroenterology, Tallaght University Hospital/Trinity College, Dublin, Ireland
| | - Jyh-Ming Liou
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,Department of Internal Medicine, National Taiwan University College of Medicine, Taipei, Taiwan.,Department of Internal Medicine, National Taiwan University Cancer Center, Taipei, Taiwan
| | - Javier P Gisbert
- Gastroenterology Unit, Instituto de Investigación Sanitaria Princesa (IIS-IP), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Hospital Universitario de La Princesa, Madrid, Spain
| | - Colm O'Morain
- Department Of Gastroenterology, Tallaght University Hospital/Trinity College, Dublin, Ireland
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33
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Boyanova L, Hadzhiyski P, Kandilarov N, Markovska R, Mitov I. Multidrug resistance in Helicobacter pylori: current state and future directions. Expert Rev Clin Pharmacol 2019; 12:909-915. [PMID: 31424296 DOI: 10.1080/17512433.2019.1654858] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Introduction: Helicobacter pylori antibiotic resistance has increased worldwide and multidrug resistance (MDR), which seriously hampers eradication success of the frequent chronic infection, has often been reported. Areas covered: H. pylori MDR rates are discussed, mostly from recent articles published since 2015. Present approaches and future directions to counteract the MDR are outlined. Expert opinion: Alarming presence of triple, quadruple and, in some studies, quintuple and sextuple resistance was detected. Primary MDR rates ranged from <10% in most European countries to >40% in Peru. Post-treatment or overall MDR rates were >23-36% in about half of the studies. MDR prevalence has varied both among and within the countries. Factors linked to the MDR are national antibiotic consumption, antibiotic misuse, treatment failures and bacterial factors such as mutations, efflux pumps, and biofilms. Important directions to counteract the MDR increase can be optimization of present and new eradication regimens, wider use of bismuth-containing regimens, assessment of benefit of vonoprazan, new antibiotics such as newer fluoroquinolones and oxazolidinone analogues, adjuvants involving N-acetylcysteine and probiotics, anti-biofilm approaches using anti-biofilm peptides and rhamnolipid and development of vaccines and non-invasive tests for resistance detection. However, more efforts and studies are required. Strain susceptibility testing is increasingly important.
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Affiliation(s)
- Lyudmila Boyanova
- Department of Medical Microbiology, Medical University of Sofia , Sofia , Bulgaria
| | - Petyo Hadzhiyski
- Specialized Hospital for Active Pediatric Treatment, Medical University of Sofia , Sofia , Bulgaria
| | - Nayden Kandilarov
- Department of General and Hepatobiliary Pancreatic Surgery, Department of Surgery, Medical University , Sofia , Bulgaria
| | - Rumyana Markovska
- Department of Medical Microbiology, Medical University of Sofia , Sofia , Bulgaria
| | - Ivan Mitov
- Department of Medical Microbiology, Medical University of Sofia , Sofia , Bulgaria
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