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von Muhlenbrock C, Cordova A, Nuñez P, Pacheco N, Herrera K, Quera R. Eradication rate and adherence with high-dose amoxicillin and proton pump inhibitor as first-line treatment for Helicobacter pylori infection: Experience from University Hospital in Chile. Helicobacter 2024; 29:e13052. [PMID: 38332683 DOI: 10.1111/hel.13052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 01/09/2024] [Accepted: 01/22/2024] [Indexed: 02/10/2024]
Abstract
INTRODUCTION In Chile, more than 70% of adults are infected by Helicobacter pylori. Clarithromycin should not be used in any regimen if there is >15% resistance to this antibiotic, being greater than 26% in our population. In this scenario, the effectiveness of triple therapy (proton pump inhibitor [PPI], clarithromycin, amoxicillin) was only 63.8%. AIM To evaluate the eradication rate and safety of dual therapy (esomeprazole and amoxicillin) in high doses, through a prospective, observational, and descriptive study. METHODS Patients with a positive urease test obtained in an upper digestive endoscopy were included. Any other previous H. pylori eradication regimen were excluded. All patients were treated with esomeprazole 40 mg three times a day and amoxicillin 750 mg four times a day for 14 days. The eradication rate of the dual therapy was evaluated with the H. pylori stool antigen test (the Pylori-Strip® test used) 6 weeks after completing the eradication treatment and with at least 14 days without PPI, being a negative result, confirmation of the effectiveness of this regimen. RESULTS Of 122 patients, 106 had a negative H. pylori antigen in stool; The intention-to-treat and per protocol analysis, the eradication rates were 91.8% [95% CI: 87%-97%] and 94% [95% CI: 90%-98%], respectively. Four patients discontinued treatment due to adverse effects. Smoking and adherence to treatment were associated with eradication rate. CONCLUSIONS In this cohort of patients with H. pylori infection, high-dose dual therapy has a high eradication rate and good adherence, raising the possibility that it could be used as first-line therapy in our country. Studies with a larger number of patients should confirm these results.
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Affiliation(s)
- Christian von Muhlenbrock
- Digestive Diseases Center, Clínica Universidad de los Andes, Universidad de los Andes, Santiago, Chile
- Gastroenterology Section, Hospital Clínico Universidad de Chile, Santiago, Chile
| | - Andrea Cordova
- Digestive Diseases Center, Clínica Universidad de los Andes, Universidad de los Andes, Santiago, Chile
| | - Paulina Nuñez
- Digestive Diseases Center, Clínica Universidad de los Andes, Universidad de los Andes, Santiago, Chile
- Gastroenterology Section, Hospital San Juan de Dios, Facultad Medicina Universidad de Chile Sede Occidente, Santiago, Chile
| | - Nicole Pacheco
- Digestive Diseases Center, Clínica Universidad de los Andes, Universidad de los Andes, Santiago, Chile
| | - Karin Herrera
- Digestive Diseases Center, Clínica Universidad de los Andes, Universidad de los Andes, Santiago, Chile
- Nutrition and Food Sciences Ph.D. Program, University of Granada, Granada, Spain
| | - Rodrigo Quera
- Digestive Diseases Center, Clínica Universidad de los Andes, Universidad de los Andes, Santiago, Chile
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Macedo Silva V, Lima Capela T, Freitas M, Boal Carvalho P, Magalhães J, Cotter J. A "new" option in Helicobacter pylori eradication: High-dose amoxicillin dual therapy outperforms bismuth quadruple therapy in a high dual resistance setting. Helicobacter 2023; 28:e12962. [PMID: 36828647 DOI: 10.1111/hel.12962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 02/12/2023] [Accepted: 02/15/2023] [Indexed: 02/26/2023]
Abstract
BACKGROUND Currently, bismuth quadruple therapy (BQT) is indicated as a first-line treatment for Helicobacter pylori eradication in areas with high dual metronidazole and clarithromycin resistance, with its use being limited by its low tolerability and significant cost. A novel regimen with high-dose amoxicillin dual therapy (HDADT) has emerged as an alternative. The aim of this study was to compare the results of these two treatments on HP eradication. MATERIALS AND METHODS Prospective randomized study including 100 consecutive patients undergoing H. pylori eradication. Each patient was randomized (in a 1:1 ratio) to one group of treatment: BQT (bismuth 140 mg + metronidazole 125 mg + tetracycline 125 mg, four times a day, for 10 days) or HDADT (amoxicillin 1000 mg alternating with amoxicillin 500 mg, four times a day, for 14 days), both associated with esomeprazole 40 mg twice a day. The primary aim was to compare treatments' efficacies. Secondary aims were to assess symptoms persistence and tolerability. RESULTS A total of 100 patients were included, 54% women, with a mean age of 55 ± 14 years. From these, five were lost to follow-up. Effective eradication proven by negative stool antigen test was significantly higher in patients randomized to HDADT when compared to BQT for both intention-to-treat (ITT) (96.2% vs. 81.4%; p = .022) and per-protocol (PP) (95.9% vs. 81%; p = .025) analysis. These differences were even more pronounced when only considering second line treatment (100% vs. 62.5%; p = .028). Side effects did not differ significantly between BQT and HDADT groups for both ITT (7.0% vs. 2.0%; p = .254) and PP (4.8% vs. 0%; p = .210) analysis. CONCLUSIONS When compared to BQT, treatment with HDADT presented higher and near 100% efficacy in eradicating H. pylori, without differences in reported side effects or compliance. This treatment represents an important alternative for populations with increasing incidences of resistance to the currently recommended antibiotic regimens.
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Affiliation(s)
- Vítor Macedo Silva
- Gastroenterology Department, Hospital da Senhora da Oliveira, Guimarães, Portugal.,Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga, Portugal
| | - Tiago Lima Capela
- Gastroenterology Department, Hospital da Senhora da Oliveira, Guimarães, Portugal.,Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga, Portugal
| | - Marta Freitas
- Gastroenterology Department, Hospital da Senhora da Oliveira, Guimarães, Portugal.,Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga, Portugal
| | - Pedro Boal Carvalho
- Gastroenterology Department, Hospital da Senhora da Oliveira, Guimarães, Portugal.,Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga, Portugal
| | - Joana Magalhães
- Gastroenterology Department, Hospital da Senhora da Oliveira, Guimarães, Portugal.,Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga, Portugal
| | - José Cotter
- Gastroenterology Department, Hospital da Senhora da Oliveira, Guimarães, Portugal.,Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga, Portugal
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