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Xu X, Zhuang P. A Meta-analysis of PPIs Plus Alginate Versus PPIs Alone for the Treatment of GERD. J Voice 2024:S0892-1997(24)00032-8. [PMID: 38493017 DOI: 10.1016/j.jvoice.2024.02.011] [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: 11/07/2023] [Revised: 02/08/2024] [Accepted: 02/12/2024] [Indexed: 03/18/2024]
Abstract
OBJECTIVE To systematically evaluate the clinical efficacy and safety of proton-pump inhibitors (PPIs) combined with alginate versus PPIs alone in the treatment of gastroesophageal reflux disease (GERD). METHODS Randomised Controlled Trials (RCTs) of PPIs combined with alginate and PPIs alone for the treatment of GERD in PubMed, Embase, and The Cochrane Library were searched and screened, and the risk assessment of bias and statistical analysis were performed using Rev Man 5.4 software. RESULTS A total of four RCTs (608 patients) were included. Before and after treatment, the change of heartburn score in the experimental group increased compared with the control group, but the difference was not statistically significant [Standard Mean Difference (SMD)= -0.29, 95%CI (-0.78, 0.19), P > 0.05]; The change of HRDQ heartburn score increased, but the difference was not statistically significant [SMD= -0.40, 95%CI (-1.04, 0.24), P > 0.05]; The number of days without heartburn during the 28-day treatment period increased, but the difference was not statistically significant [OR= 1.16, 95%CI (0.37, 3.61), P > 0.05]; The amount of reflux score increased, but the difference was not statistically significant [SMD= -0.30, 95%CI (-0.71, 0.11), P > 0.05]; The amount of change in HRDQ regurgitation score increased, but the difference was not statistically significant [SMD= -0.05,95%CI (- 1.57,0.17), P > 0.05]; There was no statistically significant difference in adverse events with treatment [OR= 0.93, 95%CI (0.58, 1.47), P > 0.05]. CONCLUSION In the treatment of GERD, the efficacy of PPIs combined with alginate is improved compared with PPIs alone, but there is no significant difference, and alginate does not increase the occurrence of adverse events in PPIs treatment. In the future, more subdivisions of GERD subtypes and more high-quality studies are needed to further improve the treatment strategy of GERD-related diseases.
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Affiliation(s)
- Xinyue Xu
- Xiamen University, Xiamen, Fujian, China; Zhongshan Hospital Xiamen University, Xiamen, Fujian, China
| | - Peiyun Zhuang
- Xiamen University, Xiamen, Fujian, China; Zhongshan Hospital Xiamen University, Xiamen, Fujian, China.
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Hungin AP, Yadlapati R, Anastasiou F, Bredenoord AJ, El Serag H, Fracasso P, Mendive JM, Savarino EV, Sifrim D, Udrescu M, Kahrilas PJ. Management advice for patients with reflux-like symptoms: an evidence-based consensus. Eur J Gastroenterol Hepatol 2024; 36:13-25. [PMID: 38006602 PMCID: PMC10695341 DOI: 10.1097/meg.0000000000002682] [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: 08/23/2023] [Accepted: 10/11/2023] [Indexed: 11/27/2023]
Abstract
Patients with reflux-like symptoms (heartburn and regurgitation) are often not well advised on implementing individualised strategies to help control their symptoms using dietary changes, lifestyle modifications, behavioural changes or fast-acting rescue therapies. One reason for this may be the lack of emphasis in management guidelines owing to 'low-quality' evidence and a paucity of interventional studies. Thus, a panel of 11 gastroenterologists and primary care doctors used the Delphi method to develop consolidated advice for patients based on expert consensus. A steering committee selected topics for literature searches using the PubMed database, and a modified Delphi process including two online meetings and two rounds of voting was conducted to generate consensus statements based on prespecified criteria (67% voting 'strongly agree' or 'agree with minor reservation'). After expert discussion and two rounds of voting, 21 consensus statements were generated, and assigned strength of evidence and Grades of Recommendation, Assessment, Development, and Evaluation (GRADE) rating. Eleven statements achieved the strongest (100%) agreement: five are related to diet and include identification and avoidance of dietary triggers, limiting alcohol, coffee and carbonated beverages, and advising patients troubled by postprandial symptoms not to overeat; the remaining six statements concern advice around smoking cessation, weight loss, raising the head-of-the-bed, avoiding recumbency after meals, stress reduction and alginate use. The aim of developing the consensus statements is that they may serve as a foundation for tools and advice that can routinely help patients with reflux-like symptoms better understand the causes of their symptoms and manage their individual risk factors and triggers.
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Affiliation(s)
- A. Pali Hungin
- Professor Emeritus, Population Health Sciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Rena Yadlapati
- Division of Gastroenterology, University of California San Diego, La Jolla, California, USA
| | - Foteini Anastasiou
- 4th Local Primary Care Team, Municipality Practice and Academic Practice of Heraklion; University of Crete, Crete, Greece
| | - Albert J. Bredenoord
- Department of Gastroenterology, Amsterdam University Medical Centers, Amsterdam, the Netherlands
| | - Hashem El Serag
- Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Pierluigi Fracasso
- Department of Gastroenterology and Digestive Endoscopy, Ospedale Sandro Pertini, Local Health Agency Roma 2, Rome, Italy
| | - Juan M Mendive
- La Mina Primary Care Academic Centre, Catalan Health Institute, University of Barcelona, Spain
| | - Edoardo V. Savarino
- Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - Daniel Sifrim
- Wingate Institute of Neurogastroenterology, Queen Mary University of London, London, UK
| | | | - Peter J Kahrilas
- Division of Gastroenterology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
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Traserra S, Cuerda H, Vallejo A, Segarra S, Sabata R, Jimenez M. Gastroprotective Effects of Oral Glycosaminoglycans with Sodium Alginate in an Indomethacin-Induced Gastric Injury Model in Rats. Vet Sci 2023; 10:667. [PMID: 38133218 PMCID: PMC10747959 DOI: 10.3390/vetsci10120667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/10/2023] [Accepted: 11/14/2023] [Indexed: 12/23/2023] Open
Abstract
The gastrointestinal (GI) mucosal barrier is often exposed to inflammatory and erosive insults, resulting in gastric lesions. Glycosaminoglycans (GAGs), such as hyaluronic acid (HA), chondroitin sulfate (CS), and N-acetylglucosamine (NAG) have shown potential beneficial effects as GI protectants. This study aimed to evaluate the gastroprotective effects of oral GAGs in rats with indomethacin-induced GI lesions. Forty-five Sprague-Dawley rats (8-9 weeks-old, 228 ± 7 g) were included in the study, divided into five study groups, and given, administered orally, either sucralfate (positive control group; PC), NAG (G group), sodium alginate plus HA and CS (AHC group), sodium alginate plus HA, CS, and NAG (AHCG group), or no treatment (negative control group; NC). Animals were administered 12.5 mg/kg indomethacin orally 15 min after receiving the assigned treatment. After 4 h, stomach samples were obtained and used to perform a macroscopic evaluation of gastric lesions and to allow histological assessment of the gastric wall (via H/E staining) and mucous (via PAS staining). The AHCG group showed significant gastroprotective improvements compared to the NC group, and a similar efficacy to the PC group. This combination of sodium alginate with GAGs might, therefore, become a safe and effective alternative to prescription drugs for gastric lesions, such as sucralfate, and have potential usefulness in companion animals.
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Affiliation(s)
- Sara Traserra
- Department of Cell Biology Physiology and Immunology, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain; (S.T.); (H.C.); (A.V.)
| | - Héctor Cuerda
- Department of Cell Biology Physiology and Immunology, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain; (S.T.); (H.C.); (A.V.)
| | - Adriana Vallejo
- Department of Cell Biology Physiology and Immunology, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain; (S.T.); (H.C.); (A.V.)
| | - Sergi Segarra
- R&D Bioiberica S.A.U., 08950 Esplugues de Llobregat, Spain; (S.S.); (R.S.)
| | - Roger Sabata
- R&D Bioiberica S.A.U., 08950 Esplugues de Llobregat, Spain; (S.S.); (R.S.)
| | - Marcel Jimenez
- Department of Cell Biology Physiology and Immunology, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain; (S.T.); (H.C.); (A.V.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, 28029 Madrid, Spain
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Gross M, Neuschwander D, Steffens L, Thomsen J, Röschmann-Doose K. Multicentre prospective study to evaluate effectiveness and safety of gel-forming and hyaluronic-acid containing chewable tablets as add-on treatment in patients with gastroesophageal reflux disease (GERD) symptoms and unsatisfying proton pump inhibitor therapy. BMC Gastroenterol 2023; 23:304. [PMID: 37674104 PMCID: PMC10483795 DOI: 10.1186/s12876-023-02946-6] [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: 11/07/2022] [Accepted: 09/04/2023] [Indexed: 09/08/2023] Open
Abstract
BACKGROUND Gastroesophageal reflux disease (GERD) is a common disease which in the majority of patients is treated with proton pump inhibitors (PPI). However, up to 45% of the patients remain symptomatic on a standard dose of PPI. This study investigated the effectiveness and safety of an add-on therapy with the gel-forming chewable tablet Sobrade® in patients unsatisfied with PPI treatment. The bioadhesive gel covers the oesophagus and thereby protects the mucosa from reflux events. METHODS 47 patients with symptomatic GERD despite PPI treatment participated in this study. The gel-forming tablets were taken up to four times daily after meals and prior to bedtime. Severity and frequency of GERD symptoms were evaluated during two onsite visits prior and following 14 days of treatment and used to calculate the GERD score of the Reflux Disease Questionnaire. Furthermore, patients recorded symptoms as well as onset and duration of symptoms relief daily in their electronic dairies. Effectiveness of treatment was analysed using non-parametric paired Wilcoxon test. In addition, anchor-based minimal important differences (MID) were assessed. RESULTS Treatment resulted in significant reduction of GERD symptoms. Severity and frequency of 8 of the 9 assessed symptoms improved significantly during the treatment phase whereby most pronounced improvement was observed for heartburn. In agreement, all three subscales of the GERD score improved significantly. MID results suggest that patients considered a mean improvement of symptoms > 30% of initial severity as beneficial. Self-assessments by patients revealed first significant improvements of symptoms like heartburn and regurgitation from day 5 of treatment onwards. 49% of patients reported relief of symptoms within 15 min which lasted on average for 3.5 h. During the study no treatment emergent adverse events were reported and in 98% of all cases tolerability of the product was rated as very good or good. CONCLUSIONS This study revealed a pronounced improvement of the symptoms after add-on treatment with the gel-forming medical device. The very good safety and tolerability profile indicate an advantageous risk-benefit ratio. TRIAL REGISTRATION This non-interventional study was prospectively positively evaluated by the responsible ethic-committees.
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Affiliation(s)
- Manfred Gross
- Department of Internal Medicine, Internistisches Klinikum München Süd, 81379, Gastroenterology, München, Germany
| | | | - Lisa Steffens
- G. Pohl-Boskamp GmbH & Co. KG, 25551, Hohenlockstedt, Germany
| | - Jörn Thomsen
- G. Pohl-Boskamp GmbH & Co. KG, 25551, Hohenlockstedt, Germany.
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5
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S2k-Leitlinie Gastroösophageale Refluxkrankheit und eosinophile Ösophagitis der Deutschen Gesellschaft für Gastroenterologie, Verdauungs- und Stoffwechselkrankheiten (DGVS) – März 2023 – AWMF-Registernummer: 021–013. ZEITSCHRIFT FUR GASTROENTEROLOGIE 2023; 61:862-933. [PMID: 37494073 DOI: 10.1055/a-2060-1069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
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6
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Barberio B, Visaggi P, Savarino E, de Bortoli N, Black CJ, Ford AC. Comparison of acid-lowering drugs for endoscopy negative reflux disease: Systematic review and network Meta-Analysis. Neurogastroenterol Motil 2023; 35:e14469. [PMID: 36153790 PMCID: PMC10078414 DOI: 10.1111/nmo.14469] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/29/2022] [Accepted: 09/12/2022] [Indexed: 12/31/2022]
Abstract
BACKGROUND The comparative efficacy and safety of medical therapies for gastro-esophageal reflux symptoms in endoscopy-negative reflux disease is unclear. We conducted a network meta-analysis to evaluate efficacy and safety of proton pump inhibitors (PPIs), histamine-2-receptor antagonists, potassium-competitive acid blockers (PCABs), and alginates in patients with endoscopy-negative reflux disease. METHODS We searched MEDLINE, EMBASE, EMBASE Classic, and the Cochrane central register of controlled trials from inception to February 1, 2022. We included randomized controlled trials (RCTs) comparing efficacy of all drugs versus each other, or versus a placebo, in adults with endoscopy-negative reflux disease. Results were reported as pooled relative risks with 95% confidence intervals to summarize effect of each comparison tested, with treatments ranked according to P-score. KEY RESULTS We identified 23 RCTs containing 10,735 subjects with endoscopy-negative reflux disease. Based on failure to achieve complete relief of symptoms between ≥2 and <4 weeks, omeprazole 20 mg o.d. (P-score 0.94) ranked first, with esomeprazole 20 mg o.d. or 40 mg o.d. ranked second and third. In achieving adequate relief, only rabeprazole 10 mg o.d. was significantly more efficacious than placebo. For failure to achieve complete relief at ≥4 weeks, dexlansoprazole 30 mg o.d. (P-score 0.95) ranked first, with 30 ml alginate q.i.d. combined with omeprazole 20 mg o.d., and 30 ml alginate t.i.d. second and third. In terms of failure to achieve adequate relief at ≥4 weeks, dexlansoprazole 60 mg o.d. ranked first (P-score 0.90), with dexlansoprazole 30 mg o.d. and rabeprazole 20 mg o.d. second and third. All drugs were safe and well-tolerated. CONCLUSIONS & INFERENCES Our results confirm superiority of PPIs compared with most other drugs in treating endoscopy-negative reflux disease. Future RCTs should aim to better classify patients with endoscopy-negative reflux disease, and to establish the role of alginates and PCABs in achieving symptom relief in both the short- and long-term.
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Affiliation(s)
- Brigida Barberio
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - Pierfrancesco Visaggi
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Edoardo Savarino
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - Nicola de Bortoli
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Christopher J Black
- Leeds Gastroenterology Institute, St. James's University Hospital, Leeds, UK.,Leeds Institute of Medical Research at St. James's, University of Leeds, Leeds, UK
| | - Alexander C Ford
- Leeds Gastroenterology Institute, St. James's University Hospital, Leeds, UK.,Leeds Institute of Medical Research at St. James's, University of Leeds, Leeds, UK
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7
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Snyder DL, Katzka DA. Complex Gastroesophageal Reflux Disease. GASTRO HEP ADVANCES 2022; 1:420-430. [PMID: 39131678 PMCID: PMC11307939 DOI: 10.1016/j.gastha.2022.02.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 02/15/2022] [Indexed: 08/13/2024]
Abstract
Gastroesophageal reflux disease (GERD) is the most prevalent gastrointestinal disorder posing diagnostic and therapeutic challenges. Diagnosis should be objectively defined with endoscopy and pH testing, while novel metrics may augment diagnosis for inconclusive GERD cases, including the postreflux swallow-induced peristaltic wave index and esophageal mucosal impedance. Conditions that overlap with or mimic GERD should be considered such as achalasia, rumination, and eosinophilic esophagitis. Genetic testing for proton pump inhibitor metabolism is an option for precision therapy in complex persistent GERD. Proton pump inhibitor refractory GERD may require medical, surgical, or endoscopic therapies. The presence of GERD should be objectively evaluated in achalasia patients treated with peroral endoscopic myotomy, and further studies are needed to determine timing of this evaluation. Patients with scleroderma are at a high risk for GERD owing to abnormal esophageal motility and should be managed with aggressive medical therapy and lifestyle changes given the high prevalence of esophagitis and Barrett's esophagus in this population. Further studies are needed to understand the complex mechanisms of GERD in idiopathic pulmonary fibrosis and lung transplantation.
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Maneerattanaporn M, Pittayanon R, Patcharatrakul T, Bunchorntavakul C, Sirinthornpanya S, Pitisuttithum P, Sudcharoen A, Kaosombatwattana U, Tangvoraphongchai K, Chaikomin R, Harinwan K, Techathuvanan K, Jandee S, Kijdamrongthum P, Tangaroonsanti A, Rattanakovit K, Chirapongsathorn S, Gonlachanvit S, Surangsrirat S, Werawatganon D, Chunlertrith K, Mahachai V, Leelakusolvong S, Piyanirun W. Thailand guideline 2020 for medical management of gastroesophageal reflux disease. J Gastroenterol Hepatol 2022; 37:632-643. [PMID: 34907597 PMCID: PMC9303339 DOI: 10.1111/jgh.15758] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 11/18/2021] [Accepted: 12/01/2021] [Indexed: 12/13/2022]
Abstract
Gastroesophageal reflux disease (GERD) is one of the most prevalent and bothersome functional gastrointestinal disorders worldwide, including in Thailand. After a decade of the first Thailand GERD guideline, physician and gastroenterologist encountered substantially increase of patients with GERD. Many of them are complicated case and refractory to standard treatment. Concurrently, the evolution of clinical characteristics as well as the progression of investigations and treatment have developed and changed tremendously. As a member of Association of Southeast Asian Nations, which are developing countries, we considered that the counterbalance between advancement and sufficient economy is essential in taking care of patients with GERD. We gather physicians from university hospitals, as well as internist and general practitioners who served in rural area, to make a consensus in this updated version of GERD guideline focusing in medical management of GERD. This clinical practice guideline was constructed adhering with standard procedure. We categorized the guideline in to four parts including definition, investigation, treatment, and long-term follow up. We anticipate that this guideline would improve physicians' proficiency and help direct readers to choose investigations and treatments in patients with GERD wisely. Moreover, we wish that this guideline would be applicable in countries with limited resources as well.
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Affiliation(s)
- Monthira Maneerattanaporn
- Division of Gastroenterology, Department of Internal MedicineSiriraj Hospital, Mahidol UniversityBangkokThailand
| | - Rapat Pittayanon
- Department of Medicine, Faculty of MedicineChulalongkorn UniversityBangkokThailand
| | | | | | | | | | - Asawin Sudcharoen
- Department of Medicine, Faculty of MedicineThe HRH Princess MahaChakri Sirindhorn Medical CenterOngkharakThailand
| | - Uayporn Kaosombatwattana
- Division of Gastroenterology, Department of Internal MedicineSiriraj Hospital, Mahidol UniversityBangkokThailand
| | | | - Reawika Chaikomin
- Division of Gastroenterology, Department of Internal MedicineSiriraj Hospital, Mahidol UniversityBangkokThailand
| | - Kamin Harinwan
- Division of Gastroenterology and Hepatology, Department of MedicinePhramongkutklao HospitalBangkokThailand
| | - Karjpong Techathuvanan
- Department of Medicine, Faculty of Medicine, Vajira HospitalNavamindradhiraj UniversityBangkokThailand
| | - Sawangpong Jandee
- Department of Medicine, Faculty of MedicinePrince of Songkla UniversityHat YaiThailand
| | | | | | | | - Sakkarin Chirapongsathorn
- Division of Gastroenterology and Hepatology, Department of MedicinePhramongkutklao HospitalBangkokThailand
| | - Sutep Gonlachanvit
- Department of Medicine, Faculty of MedicineChulalongkorn UniversityBangkokThailand
| | - Surapol Surangsrirat
- Division of Gastroenterology and Hepatology, Department of MedicinePhramongkutklao HospitalBangkokThailand
| | | | | | - Varocha Mahachai
- Department of Medicine, Faculty of MedicineChulalongkorn UniversityBangkokThailand,GI and Liver CenterBangkok HospitalBangkokThailand
| | - Somchai Leelakusolvong
- Division of Gastroenterology, Department of Internal MedicineSiriraj Hospital, Mahidol UniversityBangkokThailand
| | - Wanich Piyanirun
- Division of Gastroenterology and Hepatology, Department of MedicinePhramongkutklao HospitalBangkokThailand
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Al-Marhabi A, Hashem A, Zuberi BF, Onyekwere C, Lodhi I, Mounir M, Alkhowaiter S, Al Awadhi S, Naidoo VG, Hamada Y. The views of African and Middle Eastern Gastroenterologists on the management of mild-to-moderate, non-erosive gastro-esophageal reflux disease (GERD). Expert Rev Gastroenterol Hepatol 2022; 16:217-233. [PMID: 35184616 DOI: 10.1080/17474124.2022.2043744] [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: 11/04/2022]
Abstract
INTRODUCTION Gastro-esophageal reflux disease (GERD) is a common gastrointestinal disorder that occurs when backflow of the gastric contents into the esophagus results in troublesome symptoms. Though GERD has been extensively studied in Western populations, literature on the management of GERD in patients in Africa and Middle East (AME) is scarce. AREAS COVERED In this review, we provide an overview of the management of mild-to-moderate GERD in AME. Here we focus on the efficacy and safety of currently available treatments for GERD to help physicians and community pharmacists appropriately manage patients with mild-to-moderate GERD in the primary healthcare setting, detailing specific situations and patient scenarios that are relevant to the region, including management of GERD during Ramadan and post-bariatric surgery. EXPERT OPINION Under-appreciation of the burden of GERD in the region has resulted in a lack of consensus on management. Barriers that currently prevent the adoption of treatment guidelines in the primary healthcare setting may include lack of availability of local guidelines and referral systems, a paucity of region-specific research, and dogmatic adherence to traditional practice. By increasing awareness, strengthening knowledge, and by more effective utilization of resources, physicians and pharmacists could optimize GERD management strategies to better support patients.
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Affiliation(s)
- Ahmed Al-Marhabi
- Department of Internal Medicine, College of Medicine, Imam AbdulRahman Bin Faisal University, Khobar, Kingdom of Saudi Arabia
| | - Ahmed Hashem
- Endemic Medicine Department, Cairo University, Egypt.,Department of Medicine & Gastroenterology, Saudi German Hospital Jeddah, Jeddah, Kingdom of Saudi Arabia
| | - Bader Faiyaz Zuberi
- Department of Medicine & Gastroenterology, Dow University of Health Sciences, Karachi, Pakistan
| | - Charles Onyekwere
- Department of Medicine, Lagos State University College of Medicine, Lagos, Nigeria
| | - Imran Lodhi
- Global Medical Sciences, Reckitt Healthcare, London, UK
| | - Mohamed Mounir
- Regional Medical Affairs, Reckitt Benckiser (Arabia) FZE, Dubai, United Arab Emirates
| | - Saad Alkhowaiter
- Gastroenterology, King Saud University, King Khalid University Hospital, Riyadh, Kingdom of Saudi Arabia
| | - Sameer Al Awadhi
- Digestive Diseases Unit, Rashid Hospital, Dubai, United Arab Emirates
| | - Vasudevan G Naidoo
- Department of Gastroenterology, Inkosi Albert Luthuli Central Hospital, Durban, South Africa.,Department of Gastroenterology, University of KwaZulu-Natal, Durban, South Africa
| | - Yasser Hamada
- Endemic Medicine Department, Cairo University, Egypt
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10
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Evidence-based clinical practice guidelines for gastroesophageal reflux disease 2021. J Gastroenterol 2022; 57:267-285. [PMID: 35226174 PMCID: PMC8938399 DOI: 10.1007/s00535-022-01861-z] [Citation(s) in RCA: 86] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 02/03/2022] [Indexed: 02/06/2023]
Abstract
In Japan, with the increasing prevalence of gastroesophageal reflux disease (GERD) and growing public interest, the Japanese Society of Gastroenterology issued Evidence-based Clinical Practice Guidelines for GERD (1st edition) in 2009 and a revised 2nd edition in 2015. A number of studies on GERD were subsequently conducted in Japan and abroad, and vonoprazan, a potassium-competitive acid blocker (P-CAB), became available for the first time in Japan in February 2015. The revised 3rd edition (Japanese edition), which incorporates new findings and information, was published in April 2021. These guidelines are summarized herein, particularly sections related to the treatment of GERD. The important clinical issues addressed in the present revision are (i) the introduction of treatment algorithms that classify GERD into reflux esophagitis and non-erosive reflux disease, (ii) the clarification of treatment algorithms based on to the severity of reflux esophagitis, and (iii) the positioning of vonoprazan in the treatment for GERD. The present guidelines propose vonoprazan as the initial/maintenance treatment for severe reflux esophagitis. They also recommend vonoprazan or PPI as an initial treatment for mild reflux esophagitis and recommended PPI and proposed vonoprazan as maintenance treatment. These updated guidelines offer the best clinical strategies for GERD patients in Japan and hope that they will be of global use for the diagnosis and treatment for GERD.
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11
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Nam SY, Lee SW, Jeon SW, Kwon YH. Effect of Sodium Alginate on Gastrointestinal Symptoms after Esophagogastroduodenoscopy with Biopsy: Randomized Controlled Trial. Gut Liver 2021; 16:37-43. [PMID: 34373362 PMCID: PMC8761922 DOI: 10.5009/gnl20298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 02/07/2021] [Accepted: 02/24/2021] [Indexed: 11/04/2022] Open
Abstract
Background/Aims After esophagogastroduodenoscopy (EGD) with biopsy, some patients experience gastrointestinal symptoms. This study investigated the effect of sodium alginate on biopsy-related gastrointestinal symptoms. Methods In this open-label, randomized, controlled trial, patients undergoing EGD with biopsy were randomly assigned to a treatment or control group. In the treatment group, sodium alginate was orally administered for 3 days after EGD. Patients completed questionnaires about their gastrointestinal symptoms at baseline (past week), the day after returning home, and after another 3 days. Gastrointestinal symptoms, including abdominal pain, epigastric pain/soreness, heartburn, acid reflux, nausea/vomiting, borborygmus, abdominal distension, and belching, were rated using an upper gastrointestinal symptom rating scale (GSRS). Results A total of 210 persons (138 men) who underwent EGD with biopsy were enrolled and allocated to the treatment (n=104) or control (n=106) group. At baseline, the demographic factors and GSRS scores were not different between the control and treatment groups. The epigastric pain/soreness score increased in the control group after endoscopic biopsy (+0.056), whereas the score was decreased in the treatment group (-0.067) (p=0.042). In the treatment group, the scores for acid regurgitation and epigastric soreness decreased during follow-up from those at baseline (p<0.05), whereas there were no significant reductions in the control group. The scores for belching and borborygmus decreased during follow-up only in the treatment group. Abdominal bloating decreased in both the control and treatment groups. Conclusions Sodium alginate reduced epigastric pain/soreness after EGD with biopsy. Therefore, the prescription of sodium alginate should be considered after endoscopic biopsy.
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Affiliation(s)
- Su Youn Nam
- Department of Internal Medicine, School of Medicine, Kyungpook National University and Kyungpook National University Hospital, Daegu, Korea
| | - Sang Won Lee
- Department of Internal Medicine, School of Medicine, Kyungpook National University and Kyungpook National University Hospital, Daegu, Korea
| | - Seong Woo Jeon
- Department of Internal Medicine, School of Medicine, Kyungpook National University and Kyungpook National University Hospital, Daegu, Korea
| | - Yong Hwan Kwon
- Department of Internal Medicine, School of Medicine, Kyungpook National University and Kyungpook National University Hospital, Daegu, Korea
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12
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Ruiz de León San Juan A, Pérez de la Serna Bueno J, Sevilla Mantilla MC, Esteban López-Jamar JM, Sánchez Pernaute A. Gastro-esophageal reflux disease: limits of medical treatment and surgical indications. REVISTA ESPANOLA DE ENFERMEDADES DIGESTIVAS 2021; 113:356-363. [PMID: 33393330 DOI: 10.17235/reed.2020.7648/2020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Proton-pump inhibitors (PPI) have long been considered as the ideal treatment for gastroesophageal reflux disease (GERD), and their limitations and side effects have revealed a need for new therapeutic approaches. At present, the therapeutic gains achieved are relatively small or limited to groups of patients with specific characteristics. This article updates the contributions, indications, and limitations of pharmacological, endoscopic, and surgical treatment.
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13
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Goh K, Lee Y, Leelakusolvong S, Makmun D, Maneerattanaporn M, Quach DT, Raja Ali RA, Sollano JD, Tran VH, Wong RK. Consensus statements and recommendations on the management of mild-to-moderate gastroesophageal reflux disease in the Southeast Asian region. JGH Open 2021; 5:855-863. [PMID: 34386592 PMCID: PMC8341192 DOI: 10.1002/jgh3.12602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/11/2021] [Accepted: 06/14/2021] [Indexed: 02/05/2023]
Abstract
This paper reports the proceedings from the first consensus meeting on the management of mild-to-moderate gastroesophageal reflux disease (GERD) in the Southeast Asian (SEA) region. Seventeen statements were drawn up by a steering committee that focused on epidemiology, mechanism of action, diagnostic investigations, and treatment. Voting on the recommendations used the Delphi method with two rounds of voting among the 10 panel members. The consensus panel agreed that GERD is mostly a mild disease in the SEA region with predominantly non-erosive reflux disease (NERD). Complicated GERD and Barrett's esophagus are infrequently seen. The panel recommended endoscopy in patients with alarm or refractory symptoms but cautioned that the incidence of gastric cancer is higher in SEA. pH and impedance measurements were not recommended for routine assessment. The acid pocket is recognized as an important pathogenic factor in GERD. Lifestyle measures such as weight reduction, avoidance of smoking, reduction of alcohol intake, and elevation of the head of the bed were recommended but strict avoidance of specific foods or drinks was not. Alginates was recommended as the first-line treatment for patients with mild-to-moderate GERD while recognizing that proton-pump inhibitors (PPIs) remained the mainstay of treatment of GERD. The use of alginates was also recommended as adjunctive therapy when GERD symptoms were only partially responsive to PPIs.
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Affiliation(s)
- Khean‐Lee Goh
- Department of MedicineUniversity of MalayaKuala LumpurMalaysia
| | - Yeong‐Yeh Lee
- Department of Medicine, School of Medical SciencesUniversiti Sains MalaysiaKota BharuMalaysia
| | - Somchai Leelakusolvong
- Division of Gastroenterology, Faculty of Medicine, Siriraj HospitalMahidol UniversityBangkokThailand
| | - Dadang Makmun
- Division of Gastroenterology, Department of Internal MedicineFaculty of Medicine Universitas Indonesia/Cipto Mangunkusumo National General HospitalJakartaIndonesia
| | - Monthira Maneerattanaporn
- Division of Gastroenterology, Faculty of Medicine, Siriraj HospitalMahidol UniversityBangkokThailand
| | - Duc Trong Quach
- Department of Internal MedicineUniversity of Medicine and PharmacyHo Chi Minh CityVietnam
| | - Raja Affendi Raja Ali
- Gastroenterology Unit, Department of Medicine and Gut Research Group, Faculty of MedicineUniversiti Kebangsaan MalaysiaBangiMalaysia
| | - Jose D Sollano
- Department of GastroenterologyUniversity of Santo TomasManilaPhilippines
| | - Van Huy Tran
- Department of Gastroenterology, Hue University of Medicine and PharmacyHue UniversityHue CityVietnam
| | - Reuben Kong‐Min Wong
- Department of Medicine, Faculty of MedicineNational University of SingaporeSingapore
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14
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O'Connor-Reina C, Garcia JMI, Baptista P, Garcia-Iriarte MT, Alba CC, Perona M, Borrmann PF, Alcala LR, Plaza G. Non-acid reflux and sleep apnea: the importance of drug induced sleep endoscopy. J Otolaryngol Head Neck Surg 2021; 50:42. [PMID: 34193270 PMCID: PMC8247236 DOI: 10.1186/s40463-021-00526-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 06/15/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND We present the first case of a patient with obstructive sleep apnea syndrome (OSA), where drug induced sleep endoscopy was helpful to suspect a non-acid reflux disease and showed an improvement in a swollen epiglottis after treatment. Patient ameliorated significantly his disease only with medical therapy. CASE PRESENTATION A 54-year-old man without significant anatomical findings with obstructive sleep apnea syndrome and non-acid gastroesophageal reflux disease (GERD) disease whose Apnea- hypopnea index (AHI) was significantly reduced with the intake of 500 mg of sodium alginate twice a day for 6 months. Conventional digestive tests such as esophagoscopy and simple- and double-channel 24-h pH-metry suggested mild GERD. Conventional proton-pump inhibitor treatment with pantoprazole (40 mg daily) was started without any improvement in his sleep. Multichannel intraluminal 24-h impedanciometry indicated the presence of severe pathological GER of gaseous origin. The patient's AHI decreased from 25.3 at baseline to 8 after treatment with sodium alginate. A drug-induced sleep endoscopy study showed the changes before and after this treatment and was helpful for the diagnosis. CONCLUSIONS Thus, medical treatment can be a therapeutic option in some patients with OSA. Multichannel 24-h impedanciometry should be performed when nonacid GERD is suspected.
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Affiliation(s)
- Carlos O'Connor-Reina
- Otorhinolaryngology Department, Hospital Quiron Salud Marbella, Marbella, Spain. .,Otorhinolaryngology Department, Hospital Quiron Salud Campo de Gibraltar, Cádiz, Spain.
| | - Jose Maria Ignacio Garcia
- Pulmonology Department, Hospital Quiron Salud Marbella, Marbella, Spain.,Pulmonology Department, Hospital Quiron Salud Campo de Gibraltar, Cádiz, Spain
| | - Peter Baptista
- Otorhinolaryngology Department, Clinica Universitaria de Navarra, Pamplona, Spain
| | | | | | - Monica Perona
- Digestive Department, Hospital Quironsalud Marbella, Marbella, Spain
| | - Paz Francisca Borrmann
- Phonoaudiology Unit. Otorhinolaryngology Department Hospital Universitario Italiano Buenos Aires, Buenos Aires, Argentina
| | | | - Guillermo Plaza
- Otorhinolaryngology Department, Hospital Universitario de Fuenlabrada & Hospital Sanitas la Zarzuela. Universidad Rey Juan Carlos, Madrid, Spain
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15
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Savarino V, Marabotto E, Zentilin P, Demarzo MG, de Bortoli N, Savarino E. Pharmacological Management of Gastro-Esophageal Reflux Disease: An Update of the State-of-the-Art. Drug Des Devel Ther 2021; 15:1609-1621. [PMID: 33907381 PMCID: PMC8064680 DOI: 10.2147/dddt.s306371] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 04/06/2021] [Indexed: 12/12/2022] Open
Abstract
Gastro-esophageal reflux disease (GERD) is a highly prevalent, chronic disorder, whose knowledge remains limited and the management of these patients changes continuously. This review provides a summary of the most recent advancements in the pathogenesis of this disease and the new drugs introduced into the market to overcome some of the unmet needs of traditional therapies. Nowadays, the most fruitful diagnostic examinations are 24-hour impedance-pH monitoring, which allows us to separate true NERD from esophageal functional disorders and high-resolution manometry, which helps to exclude the existence of motility disorders sharing the same symptoms of GERD. Proton pump inhibitors (PPIs) remain the first-choice therapy in the treatment of GERD, but a consistent proportion of these patients continue to experience symptoms despite their intake. These cases pertain mainly to the subpopulation with non-erosive reflux disease (NERD) and represent very challenging clinical situations, because it is mandatory to understand the reasons for PPI failure. The management of these difficult patients requires necessarily to test them and avoid the use of empiric treatments that are often unsuccessful, costly and potentially dangerous. Recently, several new drugs have been used to increase the defensive properties of this mucosa with promising results in randomized clinical trials.
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Affiliation(s)
- Vincenzo Savarino
- Department of Internal Medicine (DIMI), University of Genoa, Genoa, Italy
| | - Elisa Marabotto
- Department of Internal Medicine (DIMI), University of Genoa, Genoa, Italy
| | - Patrizia Zentilin
- Department of Internal Medicine (DIMI), University of Genoa, Genoa, Italy
| | | | - Nicola de Bortoli
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Edoardo Savarino
- Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy
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16
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Labenz J. [Conservative Therapy of Reflux Disease and its Limits]. Zentralbl Chir 2021; 146:176-187. [PMID: 33598907 DOI: 10.1055/a-1309-2368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Gastrooesophageal reflux disease (GORD) is common. Proton pump inhibitors (PPI) are regarded as first line therapy for all clinical manifestations. However, their efficacy is inadequate for at least 30% of patients and they are occasionally poorly tolerated. Moreover, some patients would prefer an alternative therapy. Alginate cause mechanical reflux inhibition by forming a gelatinous layer in the so-called acid pocket, an acid reservoir that forms on the surface of the chyme in the gastric corpus immediately after food intake. They may be used an alternative to treat the symptoms of uncomplicated GORD and as an add-on to PPIs if these do not improve symptoms adequately. If the reflux symptoms persist or if reflux oesophagitis does not heal, differentiated diagnostic testing must be performed, using endoscopy and functional analysis. Extraoesophageal manifestations of GORD include cough, compulsive clearing of the throat, problems with the voice and globus sensation. These often do not respond to antireflux therapy. Recent data indicate that these are complex hypersensitivity syndromes and that reflux is only one of several possible triggers.
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Affiliation(s)
- Joachim Labenz
- Innere Medizin, Diakonie Klinikum, Jung-Stilling-Krankenhaus Siegen, Deutschland
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17
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Bor S, Kalkan İH, Çelebi A, Dinçer D, Akyüz F, Dettmar P, Özen H. Alginates: From the ocean to gastroesophageal reflux disease treatment. TURKISH JOURNAL OF GASTROENTEROLOGY 2020; 30:109-136. [PMID: 31624050 DOI: 10.5152/tjg.2019.19677] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Serhat Bor
- Division of Gastroenterology, Department of Internal Medicine, Ege University School of Medicine, Ege Reflux Study Group, İzmir, Turkey
| | - İsmail Hakkı Kalkan
- Department of Gastroenterology, TOBB University of Economics and Technology School of Medicine, Turkey
| | - Altay Çelebi
- Division of Gastroenterology, Kocaeli University School of Medicine, Kocaeli, Turkey
| | - Dinç Dinçer
- Division of Gastroenterology, Department of Internal Medicine, Akdeniz University School of Medicine, Antalya, Turkey
| | - Filiz Akyüz
- Division of Gastroenterology, Department of Internal Medicine İstanbul School of Medicine, Istanbul University, İstanbul, Turkey
| | - Peter Dettmar
- RD Biomed Limited, Castle Hill Hospital, Cottingham, UK
| | - Hasan Özen
- Department of Pediatrics, Hacettepe University School of Medicine, Ankara, Turkey
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18
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Chapelle N, Ben Ghezala I, Barkun A, Bardou M. The pharmacotherapeutic management of gastroesophageal reflux disease (GERD). Expert Opin Pharmacother 2020; 22:219-227. [PMID: 32893683 DOI: 10.1080/14656566.2020.1817385] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Gastroesophageal reflux disease (GERD) is a very common worldwide condition, affecting about 15-20% of the whole population, and representing a major burden for health-care systems. Because of its frequency, health physicians - family doctors as well as specialists - should be aware of the different pharmacotherapeutic approaches in managing GERD, according to disease severity. AREAS COVERED Authors summarize the pharmacological management of GERD in adults, present the different pharmaceutical classes, and review the evidence on efficacy for each treatment according to the most common clinical scenarios: non-erosive gastroesophageal reflux disease (NERD), erosive esophagitis (EE), and proton-pump inhibitor (PPI) refractory GERD. They also provide an overview of treatments under development. EXPERT OPINION To date, PPIs remain the most effective treatment option for both NERD and EE. However, Potassium-Competitive Acid blockers (PCAB) may be considered, with at least similar efficacy in Asian populations. Preliminary data suggest that PCABs could be superior to classic PPIs in patients with severe EE, and may also be of particular interest in the management of PPI-refractory GERD patients. Their definitive role in GERD management, however, still remains to be determined based on properly designed and conducted randomized clinical trials.
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Affiliation(s)
- Nicolas Chapelle
- Institut des Maladies de l'Appareil Digestif, Service de Gastroentérologie, Oncologie Digestive et Assistance Nutritionnelle , Nantes, France
| | - Ines Ben Ghezala
- Centre d'Investigations Cliniques CIC1432, CHU de Dijon , Dijon, France
| | - Alan Barkun
- Gastroenterology Department, McGill University , Montreal, Canada
| | - Marc Bardou
- Centre d'Investigations Cliniques CIC1432, CHU de Dijon , Dijon, France.,Gastroenterology Department, CHU de Dijon , Dijon, France
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19
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Spechler SJ. Evaluation and Treatment of Patients with Persistent Reflux Symptoms Despite Proton Pump Inhibitor Treatment. Gastroenterol Clin North Am 2020; 49:437-450. [PMID: 32718563 DOI: 10.1016/j.gtc.2020.04.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Despite the exceptional efficacy of proton pump inhibitors (PPIs) in healing reflux esophagitis complicating gastroesophageal reflux disease (GERD), up to 40% of patients who take PPIs for GERD complain of persistent GERD symptoms. There is no clear consensus on the type, dosing, and duration of PPI therapy required to establish a diagnosis of PPI-refractory GERD symptoms, but most authorities do not consider patients "PPI-refractory" unless they have been on double-dose PPIs. This article discusses the mechanisms that might underlie heartburn that does not respond PPIs and an approach to the management of patients with PPI-refractory GERD symptoms.
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Affiliation(s)
- Stuart Jon Spechler
- Division of Gastroenterology, Center for Esophageal Diseases, Baylor University Medical Center, Center for Esophageal Research, Baylor Scott & White Research Institute, 3500 Gaston Avenue, 2 Hoblitzelle, Suite 250, Dallas, TX 75246, USA.
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20
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Scarpignato C, Sloan JA, Wang DH, Hunt RH. Gastrointestinal pharmacology: practical tips for the esophagologist. Ann N Y Acad Sci 2020; 1481:90-107. [PMID: 32822080 DOI: 10.1111/nyas.14447] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/19/2020] [Accepted: 07/05/2020] [Indexed: 12/22/2022]
Abstract
Gastroesophageal reflux disease (GERD) is primarily a motor disorder, and its pathogenesis is multifactorial. As a consequence, treatment should be able to address the underlying pathophysiology. Proton pump inhibitors (PPIs) are the mainstay of medical therapy for GERD, but these drugs only provide the control of symptoms and lesions without curing the disease. However, continuous acid suppression with PPIs is recommended for patients with Barrett's esophagus because of their potential chemopreventive effects. In addition to the antisecretory activity, these compounds display several pharmacological properties, often overlooked in clinical practice. PPIs can indeed affect gastric motility, exert a mucosal protective effect, and an antioxidant, anti-inflammatory, and antineoplastic activity, also protecting cancer cells from developing chemo- or radiotherapeutic resistance. Even in the third millennium, current pharmacologic approaches to address GERD are limited. Reflux inhibitors represent a promise unfulfilled, effective and safe prokinetics are lacking, and antidepressants, despite being effective in selected patients, give rise to adverse events in a large proportion of them. While waiting for new drug classes (like potassium-competitive acid blockers), reassessing old drugs (namely alginate-containing formulations), and paving the new avenue of esophageal mucosal protection are, at the present time, the only reliable alternatives to acid suppression.
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Affiliation(s)
- Carmelo Scarpignato
- Department of Health Sciences, United Campus of Malta, Msida, Malta.,Faculty of Medicine, Chinese University of Hong Kong, ShaTin, Hong Kong
| | - Joshua A Sloan
- Division of Gastroenterology and Hepatology, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - David H Wang
- Division of Hematology and Oncology, UT Southwestern Medical Center and VA North Texas Health Care System, Dallas, Texas
| | - Richard H Hunt
- Division of Gastroenterology, Department of Medicine, Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Ontario, Canada
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21
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Boarino V, Raguzzi I, Marocchi M, Merighi A. Symptomatic response to GERDOFF® in patients with gastro-esophageal reflux disease and poor response to alginates: an exploratory, post-market, open-label study. TURKISH JOURNAL OF GASTROENTEROLOGY 2020; 31:466-473. [PMID: 32721918 DOI: 10.5152/tjg.2020.19327] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND/AIMS A novel medical device based on hyaluronic acid, chondroitin sulphate plus aluminum hydroxide (GERDOFF®, melt-in-mouth tablets) showed efficacy in reducing GER-related symptoms. This exploratory, open-label study evaluated symptomatic effects of a 14-day treatment with GERDOFF® in GERD patients. MATERIALS AND METHODS GERD Impact Scale (GIS) questionnaire was filled at baseline visit, after 7 and 14 days of treatment; patients' Global Satisfaction was evaluated at the final visit. Primary endpoint was the reduction of heartburn episodes per week; secondary endpoints were GERD-related symptoms, patients' satisfaction, and safety. RESULTS Forty patients were included, 22 were on stable therapy with proton pump inhibitor (PPI). Compared to baseline, the days with heartburn episodes and the GIS score progressively decreased during the first (p<0.0001) and the second week of treatment (p<0.0001). Heartburn episodes per week (p<0.0001) and the GIS score (p<0.0001) decreased in the first and the last 7 days of 14-day treatment and did not differ between patients on and off PPI. The treatment was safe and well-tolerated, and it was rated as very good (46.2%) or good (43.6%) on the satisfaction questionnaire. CONCLUSION GERDOFF® could effectively treat GER symptoms in patients not responding to PPI or alginate-based formulation. ISRCTN_15143752.
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Affiliation(s)
- Valentina Boarino
- Department of Gastroenterology and Digestive Endoscopy, University of Modena, Modena, Italy
| | - Ivana Raguzzi
- Department of Gastroenterology and Digestive Endoscopy, Hospital of Cernusco sul Naviglio, Milan, Italy
| | - Margherita Marocchi
- Department of Gastroenterology and Digestive Endoscopy, University of Modena, Modena, Italy
| | - Alberto Merighi
- Department of Gastroenterology and Digestive Endoscopy, University of Modena, Modena, Italy
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22
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Patrick PS, Bear JC, Fitzke HE, Zaw-Thin M, Parkin IP, Lythgoe MF, Kalber TL, Stuckey DJ. Radio-metal cross-linking of alginate hydrogels for non-invasive in vivo imaging. Biomaterials 2020; 243:119930. [PMID: 32171101 PMCID: PMC7103761 DOI: 10.1016/j.biomaterials.2020.119930] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 02/26/2020] [Accepted: 02/28/2020] [Indexed: 12/30/2022]
Abstract
Alginate hydrogels are cross-linked polymers with high water content, tuneable chemical and material properties, and a range of biomedical applications including drug delivery, tissue engineering, and cell therapy. However, their similarity to soft tissue often renders them undetectable within the body using conventional bio-medical imaging techniques. This leaves much unknown about their behaviour in vivo, posing a challenge to therapy development and validation. To address this, we report a novel, fast, and simple method of incorporating the nuclear imaging radio-metal 111In into the structure of alginate hydrogels by utilising its previously-undescribed capacity as an ionic cross-linking agent. This enabled non-invasive in vivo nuclear imaging of hydrogel delivery and retention across the whole body, over time, and across a range of model therapies including: nasal and oral drug delivery, stem cell transplantation, and cardiac tissue engineering. This information will facilitate the development of novel therapeutic hydrogel formulations, encompassing alginate, across disease categories.
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Affiliation(s)
- P Stephen Patrick
- Centre for Advanced Biomedical Imaging, Division of Medicine, University College London, London, WC1E 6DD, UK.
| | - Joseph C Bear
- School of Life Science, Pharmacy & Chemistry, Kingston University, Penrhyn Road, Kingston upon Thames, KT1 2EE, UK
| | - Heather E Fitzke
- Centre for Advanced Biomedical Imaging, Division of Medicine, University College London, London, WC1E 6DD, UK
| | - May Zaw-Thin
- Centre for Advanced Biomedical Imaging, Division of Medicine, University College London, London, WC1E 6DD, UK
| | - Ivan P Parkin
- Materials Chemistry Centre, Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Mark F Lythgoe
- Centre for Advanced Biomedical Imaging, Division of Medicine, University College London, London, WC1E 6DD, UK
| | - Tammy L Kalber
- Centre for Advanced Biomedical Imaging, Division of Medicine, University College London, London, WC1E 6DD, UK
| | - Daniel J Stuckey
- Centre for Advanced Biomedical Imaging, Division of Medicine, University College London, London, WC1E 6DD, UK.
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23
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Savarino V, Marabotto E, Zentilin P, Furnari M, Bodini G, De Maria C, Tolone S, De Bortoli N, Frazzoni M, Savarino E. Pathophysiology, diagnosis, and pharmacological treatment of gastro-esophageal reflux disease. Expert Rev Clin Pharmacol 2020; 13:437-449. [PMID: 32253948 DOI: 10.1080/17512433.2020.1752664] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Gastro-esophageal reflux disease (GERD) is a highly prevalent, chronic, relapsing disorder, whose knowledge has increased in last years thanks to the advent of new sophisticated techniques, such as 24-h impedance-pH monitoring and high-resolution manometry, for the study of esophageal functions. AREAS COVERED This review provides an overview of our advancements in understanding the complex pathophysiology, improving the diagnosis and defining the modern pharmacological therapeutic approach to GERD. EXPERT OPINION The growing clinical application of impedance-pH testing has allowed us to know the diversity of patients with non-erosive reflux disease (NERD), who nowadays represent about 70% of the whole population with reflux symptoms. We have realized that NERD has to be considered as an umbrella term covering various subgroups with different pathophysiologies. The development of new impedance metrics, in particular mean nocturnal baseline impedance, seems to be promising in the improvement of the diagnostic process of this disease. There are no particularly innovative features in the pharmacological therapy of GERD, unless the interest toward drugs is able to increase the defense properties of esophageal mucosa and/or its protection. These compounds can be of help in combination with proton pump inhibitors in NERD patients with partial response to antisecretory drugs alone.
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Affiliation(s)
| | - Elisa Marabotto
- Department of Internal Medicine, University of Genoa , Genoa, Italy
| | | | - Manuele Furnari
- Department of Internal Medicine, University of Genoa , Genoa, Italy
| | - Giorgia Bodini
- Department of Internal Medicine, University of Genoa , Genoa, Italy
| | | | - Salvatore Tolone
- Department of Surgery, University of Campania "Luigi Vanvitelli" , Naples, Italy
| | - Nicola De Bortoli
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa , Pisa, Italy
| | - Marzio Frazzoni
- Department of Gastroenterology, Gastroenterology Digestive Pathophysiology Unit, Baggiovara Hospital , Modena, Italy
| | - Edoardo Savarino
- Department of Surgery, Oncology and Gastroenterology, University of Padua , Padua, Italy
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24
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Spechler SJ. Refractory Gastroesophageal Reflux Disease and Functional Heartburn. Gastrointest Endosc Clin N Am 2020; 30:343-359. [PMID: 32146950 DOI: 10.1016/j.giec.2019.12.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This report discusses the potential mechanisms that might underlie refractory GERD and functional heartburn, and how to distinguish among those mechanisms using a systematic evaluation that includes careful medical history, endoscopy with esophageal biopsy, esophageal manometry, and esophageal multichannel intraluminal impedance-pH monitoring. The report provides an approach to patient management that depends on the underlying mechanism identified by this systematic evaluation.
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Affiliation(s)
- Stuart Jon Spechler
- Division of Gastroenterology, Center for Esophageal Diseases, Baylor University Medical Center at Dallas, The Center for Esophageal Research, Baylor Scott & White Research Institute, 3500 Gaston Avenue, 2 Hoblitzelle, Suite 250, Dallas, TX 75246, USA.
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25
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Kim JH, Lee YC, Kim EH, Park JC, Shin SK, Lee SK, Jung DH, Park JJ, Youn YH, Park H. The Clinical Efficacy of a Pure Alginate Formulation (Lamina G) for Controlling Symptoms in Individuals with Reflux Symptoms: A Randomized Clinical Study. Gut Liver 2019; 13:642-648. [PMID: 30970442 PMCID: PMC6860038 DOI: 10.5009/gnl18378] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 11/24/2018] [Accepted: 12/08/2018] [Indexed: 12/13/2022] Open
Abstract
Background/Aims Bicarbonate-containing alginate formulations are reported to be effective for controlling reflux symptoms. However, the efficacy of Lamina G alginate without gas production has not been reported. The aim is to evaluate the efficacy of a non-bicarbonate alginate in individuals with reflux symptoms without reflux esophagitis. Methods Participants who had experienced heartburn or regurgitation for 7 consecutive days were randomized to one of the following treatment groups: proton pump inhibitors (PPI) plus alginate (combination) or PPI plus placebo (PPI only). In addition, as a reference group, patients received placebo plus alginate (alginate only). The primary endpoint compared the percentage of patients with complete resolution of symptoms for the final 7 days of the treatment. Secondary endpoints compared changes in symptom score, symptom-free days during the treatment period, the Reflux Disease Questionnaire, Patient Assessment of Upper Gastrointestinal Disorders (PAGI)-Quality of Life and PAGI-Symptoms Severity Index scores, the investigator’s assessment of symptoms, and incidence of adverse events. Results Complete resolution of heartburn or regurgitation was not significantly different between the combination and PPI only groups (58.7% vs 57.5%, p=0.903). The secondary endpoints were not significantly different between the two groups. Complete resolution of heartburn or regurgitation, did not differ between the alginate only reference group and the PPI only group (75.0% vs 57.5%, p=0.146). Conclusions The addition of non-bicarbonate alginate to PPI was no more effective than PPI alone in controlling reflux symptoms.
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Affiliation(s)
- Jie-Hyun Kim
- Department of Internal Medicine, Gangnam Severance Hospital, Seoul, Korea.,Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Yong Chan Lee
- Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea.,Department of Internal Medicine, Severance Hospital, Seoul, Korea
| | - Eun Hye Kim
- Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea.,Department of Internal Medicine, Severance Hospital, Seoul, Korea
| | - Jun Chul Park
- Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea.,Department of Internal Medicine, Severance Hospital, Seoul, Korea
| | - Sung Kwan Shin
- Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea.,Department of Internal Medicine, Severance Hospital, Seoul, Korea
| | - Sang Kil Lee
- Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea.,Department of Internal Medicine, Severance Hospital, Seoul, Korea
| | - Da Hyun Jung
- Department of Internal Medicine, Gangnam Severance Hospital, Seoul, Korea.,Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Jun Park
- Department of Internal Medicine, Gangnam Severance Hospital, Seoul, Korea.,Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Young Hoon Youn
- Department of Internal Medicine, Gangnam Severance Hospital, Seoul, Korea.,Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Hyojin Park
- Department of Internal Medicine, Gangnam Severance Hospital, Seoul, Korea.,Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
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26
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Park CH, Lee SK. [Gastroesophageal Reflux Disease]. THE KOREAN JOURNAL OF GASTROENTEROLOGY 2019; 73:70-76. [PMID: 30845382 DOI: 10.4166/kjg.2019.73.2.70] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 01/24/2019] [Accepted: 02/07/2019] [Indexed: 12/13/2022]
Abstract
Gastroesophageal reflux disease (GERD) is a condition that develops when reflux of stomach contents causes troublesome symptoms and/or complications. The prevalence of GERD is increasing worldwide and in Asia-Pacific. The latest Korean guidelines for GERD were published in 2012, and several international guidelines and consensus statements for the management of GERD have also been recently published. Here, we review these guidelines and consensus statements in order to provide a better understanding of the diagnosis and treatment of GERD.
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Affiliation(s)
- Chan Hyuk Park
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Sang Kil Lee
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
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27
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MacFarlane B. Management of gastroesophageal reflux disease in adults: a pharmacist's perspective. INTEGRATED PHARMACY RESEARCH AND PRACTICE 2018; 7:41-52. [PMID: 29892570 PMCID: PMC5993040 DOI: 10.2147/iprp.s142932] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Gastroesophageal reflux disease (GERD) is a common gastrointestinal diagnosis, a leading reason for endoscopy and cause of potentially serious complications, resulting in significant individual and system-wide health burden. Approximately one quarter of people living in western countries have experienced GERD, and the prevalence appears to be on the rise. Risk factors for GERD include hiatus hernia, obesity, high-fat diet, tobacco smoking, alcohol consumption, pregnancy, genetics, and some medications. The cardinal symptoms of GERD are troublesome heartburn and regurgitation. GERD is identified by taking a patient-centered history and if necessary can be classified by endoscopic investigation. The role of the pharmacist in the management of GERD is to confirm the diagnosis by history taking, confirm there are no alarming signs or symptoms that require referral to a doctor, and recommendation of short-term therapy to control symptoms. Effective pharmacological treatments for GERD include antacids, alginate, histamine H2 receptor antagonists, and proton pump inhibitors. This narrative review includes a comparison of the efficacy and safety of these treatments and pertinent information to help pharmacists advise patients with GERD on their appropriate use.
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Affiliation(s)
- Brett MacFarlane
- Australian College of Pharmacy, Canberra, ACT, Australia.,Faculty of Health, Queensland University of Technology, Brisbane, QLD, Australia
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28
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Mermelstein J, Chait Mermelstein A, Chait MM. Proton pump inhibitor-refractory gastroesophageal reflux disease: challenges and solutions. Clin Exp Gastroenterol 2018; 11:119-134. [PMID: 29606884 PMCID: PMC5868737 DOI: 10.2147/ceg.s121056] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
A significant percentage of patients with gastroesophageal reflux disease (GERD) will not respond to proton pump inhibitor (PPI) therapy. The causes of PPI-refractory GERD are numerous and diverse, and include adherence, persistent acid, functional disorders, nonacid reflux, and PPI bioavailability. The evaluation should start with a symptom assessment and may progress to imaging, endoscopy, and monitoring of esophageal pH, impedance, and bilirubin. There are a variety of pharmacologic and procedural interventions that should be selected based on the underlying mechanism of PPI failure. Pharmacologic treatments can include antacids, prokinetics, alginates, bile acid binders, reflux inhibitors, and antidepressants. Procedural options include laparoscopic fundoplication and LINX as well as endoscopic procedures, such as transoral incisionless fundoplication and Stretta. Several alternative and complementary treatments of possible benefit also exist.
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Affiliation(s)
- Joseph Mermelstein
- Gasteroenterology and Nutrition Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Alanna Chait Mermelstein
- Department of Psychiatry and Behavioral Sciences, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Maxwell M Chait
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, NY, USA
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29
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Gyawali CP, Fass R. Management of Gastroesophageal Reflux Disease. Gastroenterology 2018; 154:302-318. [PMID: 28827081 DOI: 10.1053/j.gastro.2017.07.049] [Citation(s) in RCA: 170] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 07/29/2017] [Accepted: 07/31/2017] [Indexed: 02/06/2023]
Abstract
Management of gastroesophageal reflux disease (GERD) commonly starts with an empiric trial of proton pump inhibitor (PPI) therapy and complementary lifestyle measures, for patients without alarm symptoms. Optimization of therapy (improving compliance and timing of PPI doses), or increasing PPI dosage to twice daily in select circumstances, can reduce persistent symptoms. Patients with continued symptoms can be evaluated with endoscopy and tests of esophageal physiology, to better determine their disease phenotype and optimize treatment. Laparoscopic fundoplication, magnetic sphincter augmentation, and endoscopic therapies can benefit patients with well-characterized GERD. Patients with functional diseases that overlap with or mimic GERD can also be treated with neuromodulators (primarily antidepressants), or psychological interventions (psychotherapy, hypnotherapy, cognitive and behavioral therapy). Future approaches to treatment of GERD include potassium-competitive acid blockers, reflux-reducing agents, bile acid binders, injection of inert substances into the esophagogastric junction, and electrical stimulation of the lower esophageal sphincter.
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Affiliation(s)
- C Prakash Gyawali
- Division of Gastroenterology, Washington University School of Medicine, St. Louis, Missouri
| | - Ronnie Fass
- Division of Gastroenterology and Hepatology, Esophageal and Swallowing Center, Case Western Reserve University, MetroHealth Medical Center, Cleveland, Ohio.
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30
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Kung YM, Hsu WH, Wu MC, Wang JW, Liu CJ, Su YC, Kuo CH, Kuo FC, Wu DC, Wang YK. Recent Advances in the Pharmacological Management of Gastroesophageal Reflux Disease. Dig Dis Sci 2017; 62:3298-3316. [PMID: 29110162 DOI: 10.1007/s10620-017-4830-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 10/25/2017] [Indexed: 12/15/2022]
Abstract
The management of proton pump inhibitor-refractory GERD (rGERD) is a challenge in clinical practice. Since up to one-third of patients with typical GERD symptoms (heartburn and/or acid regurgitation) are not satisfied with proton pump inhibitor (PPI) therapy, new drug development targeting different pathophysiologies of GERD is imperative. At present, no other drugs serve as a more potent acid suppression agent than PPIs. As an add-on therapy, histamine type-2 receptor antagonists, alginates, prokinetics and transient lower esophageal sphincter relaxation inhibitors have some impact on the subgroups of rGERD, but greater effectiveness and fewer adverse effects for widespread use are required. Visceral hypersensitivity also contributes to the perception of GERD symptoms, and neuromodulators including antidepressants play a role in this category. Esophageal pH-impedance monitoring helps to distinguish functional heartburn from true GERD, and psychologic medication and cognitive behavior therapy are further therapy options instead of PPIs.
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Affiliation(s)
- Yu-Min Kung
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Department of Internal Medicine, Kaohsiung Municipal Hsiao-Kang Hospital, 100 Tz-You 1st road, Kaohsiung, 807, Taiwan
| | - Wen-Hung Hsu
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Faculty of Medicine, Department of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Meng-Chieh Wu
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Department of Internal Medicine, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan
| | - Jiunn-Wei Wang
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Department of Internal Medicine, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan
| | - Chung-Jung Liu
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Yu-Chung Su
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Faculty of Medicine, Department of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chao-Hung Kuo
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Faculty of Medicine, Department of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Fu-Chen Kuo
- School of Medicine, College of Medicine, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
| | - Deng-Chyang Wu
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Faculty of Medicine, Department of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Internal Medicine, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan
| | - Yao-Kuang Wang
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan. .,Department of Internal Medicine, Kaohsiung Municipal Hsiao-Kang Hospital, 100 Tz-You 1st road, Kaohsiung, 807, Taiwan.
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31
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Xuan C, Peng Z, Wang J, Lei W, Xia K, Wu Z, Xiao W, Wang D. Biomass derived nitrogen doped carbon with porous architecture as efficient electrode materials for supercapacitors. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2017.09.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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32
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Savarino E, Zentilin P, Marabotto E, Pellegatta G, Coppo C, Brunacci M, Dulbecco P, Savarino V. Drugs for improving esophageal mucosa defense: where are we now and where are we going? Ann Gastroenterol 2017; 30:585-591. [PMID: 29118552 PMCID: PMC5670277 DOI: 10.20524/aog.2017.0187] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 07/24/2017] [Indexed: 12/12/2022] Open
Abstract
In the past, the attention of physiologists and doctors has been mainly focused on the key role of acid in the pathogenesis of gastroesophageal reflux disease (GERD), but increasing evidence that 20-40% of reflux patients respond not at all or only partially to proton pump inhibitors (PPIs) has underlined the concept that factors other than acid are implicated in its development and the elicitation of symptoms. Among these, impaired mucosal integrity, particularly in most patients with non-erosive reflux disease, has recently been reincluded and the reinforcement of defensive mechanisms and/or its protection has been reappointed as a renewed therapeutic target for the management of GERD patients. In this review we will summarize the existing knowledge of the old and novel compounds able to produce this therapeutic effect, including sucralfate, alginate-based drugs, and a new medical device consisting of hyaluronic acid and chondroitin sulfate dispersed in a bioadhesive carrier, together with the potential indications for their use. It is to be stressed, however, that, although these compounds may represent a real alternative to PPI therapy in GERD, the combination of mucosal protection with acid suppression may help manage many cases with a partial or unsatisfactory response to PPIs alone.
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Affiliation(s)
- Edoardo Savarino
- Gastrointestinal Unit, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua (Edoardo Savarino), Italy
| | - Patrizia Zentilin
- Gastrointestinal Unit, Department of Internal Medicine and Medical Specialties, University of Genoa, Genoa (Patrizia Zentillin, Elisa Marabotto, Gaia Pellegatta, Claudia Coppo, Matteo Brunacci, Pietro Dulbecco, Vincenzo Savarino), Italy
| | - Elisa Marabotto
- Gastrointestinal Unit, Department of Internal Medicine and Medical Specialties, University of Genoa, Genoa (Patrizia Zentillin, Elisa Marabotto, Gaia Pellegatta, Claudia Coppo, Matteo Brunacci, Pietro Dulbecco, Vincenzo Savarino), Italy
| | - Gaia Pellegatta
- Gastrointestinal Unit, Department of Internal Medicine and Medical Specialties, University of Genoa, Genoa (Patrizia Zentillin, Elisa Marabotto, Gaia Pellegatta, Claudia Coppo, Matteo Brunacci, Pietro Dulbecco, Vincenzo Savarino), Italy
| | - Claudia Coppo
- Gastrointestinal Unit, Department of Internal Medicine and Medical Specialties, University of Genoa, Genoa (Patrizia Zentillin, Elisa Marabotto, Gaia Pellegatta, Claudia Coppo, Matteo Brunacci, Pietro Dulbecco, Vincenzo Savarino), Italy
| | - Matteo Brunacci
- Gastrointestinal Unit, Department of Internal Medicine and Medical Specialties, University of Genoa, Genoa (Patrizia Zentillin, Elisa Marabotto, Gaia Pellegatta, Claudia Coppo, Matteo Brunacci, Pietro Dulbecco, Vincenzo Savarino), Italy
| | - Pietro Dulbecco
- Gastrointestinal Unit, Department of Internal Medicine and Medical Specialties, University of Genoa, Genoa (Patrizia Zentillin, Elisa Marabotto, Gaia Pellegatta, Claudia Coppo, Matteo Brunacci, Pietro Dulbecco, Vincenzo Savarino), Italy
| | - Vincenzo Savarino
- Gastrointestinal Unit, Department of Internal Medicine and Medical Specialties, University of Genoa, Genoa (Patrizia Zentillin, Elisa Marabotto, Gaia Pellegatta, Claudia Coppo, Matteo Brunacci, Pietro Dulbecco, Vincenzo Savarino), Italy
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33
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Savarino E, Zentilin P, Marabotto E, Bodini G, Della Coletta M, Frazzoni M, de Bortoli N, Martinucci I, Tolone S, Pellegatta G, Savarino V. A review of pharmacotherapy for treating gastroesophageal reflux disease (GERD). Expert Opin Pharmacother 2017; 18:1333-1343. [PMID: 28754071 DOI: 10.1080/14656566.2017.1361407] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Medical therapy of gastroesophageal reflux disease (GERD) is based on the use of proton pump inhibitors (PPIs) as first choice treatment. Despite their effectiveness, about 20-30% of patients report an inadequate response and alternative drugs are required. Areas covered: This review provides an overview of current pharmacotherapy for treating GERD by showing the results of PPIs, reflux inhibitors, antidepressants and mucosa protective medications. Expert opinion: Medical therapy of GERD does not definitely cure the disease, because even PPIs are not able to change the key factors responsible for it. However, they remain the mainstay of medical treatment, allowing us to alleviate symptoms, heal esophagitis and prevent complications in the majority of cases. Nevertheless, many patients do not respond, because acid does not play any pathogenetic role. Prokinetics and reflux inhibitors have the potential to control motor abnormalities, but the results of clinical trials are inconsistent. Antidepressant drugs are effective in specific subgroups of NERD patients with visceral hypersensitivity, but larger, controlled clinical studies are necessary. Protective drugs or medical devices have been recently adopted to reinforce mucosal resistance and preliminary trials have confirmed their efficacy either combined with or as add-on medication to PPIs in refractory patients.
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Affiliation(s)
- Edoardo Savarino
- a Gastrointestinal Unit, Department of Surgery, Oncology and Gastroenterology , University of Padua , Padua , Italy
| | - Patrizia Zentilin
- b Gastrointestinal Unit, Department of Internal Medicine and Medical Specialties , University of Genoa , Genoa , Italy
| | - Elisa Marabotto
- b Gastrointestinal Unit, Department of Internal Medicine and Medical Specialties , University of Genoa , Genoa , Italy
| | - Giorgia Bodini
- b Gastrointestinal Unit, Department of Internal Medicine and Medical Specialties , University of Genoa , Genoa , Italy
| | - Marco Della Coletta
- a Gastrointestinal Unit, Department of Surgery, Oncology and Gastroenterology , University of Padua , Padua , Italy
| | - Marzio Frazzoni
- c Digestive Pathophysiology Unit , Baggiovara Hospital , Modena , Italy
| | - Nicola de Bortoli
- d Department of Translational Research and New Technology in Medicine and Surgery , University of Pisa , Pisa , Italy
| | - Irene Martinucci
- d Department of Translational Research and New Technology in Medicine and Surgery , University of Pisa , Pisa , Italy
| | - Salvatore Tolone
- e General and Bariatric Surgery Unit, Department of Surgery , Second University of Napoli , Napoli , Italy
| | - Gaia Pellegatta
- b Gastrointestinal Unit, Department of Internal Medicine and Medical Specialties , University of Genoa , Genoa , Italy
| | - Vincenzo Savarino
- b Gastrointestinal Unit, Department of Internal Medicine and Medical Specialties , University of Genoa , Genoa , Italy
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34
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Coyle C, Crawford G, Wilkinson J, Thomas SJ, Bytzer P. Randomised clinical trial: addition of alginate-antacid (Gaviscon Double Action) to proton pump inhibitor therapy in patients with breakthrough symptoms. Aliment Pharmacol Ther 2017; 45:1524-1533. [PMID: 28464343 DOI: 10.1111/apt.14064] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 02/09/2017] [Accepted: 03/06/2017] [Indexed: 12/16/2022]
Abstract
BACKGROUND Symptomatic breakthrough in proton pump inhibitor (PPI)-treated gastro-oesophageal reflux disease (GERD) patients is a common problem with a range of underlying causes. The nonsystemic, raft-forming action of alginates may help resolve symptoms. AIM To assess alginate-antacid (Gaviscon Double Action, RB, Slough, UK) as add-on therapy to once-daily PPI for suppression of breakthrough reflux symptoms. METHODS In two randomised, double-blind studies (exploratory, n=52; confirmatory, n=262), patients taking standard-dose PPI who had breakthrough symptoms, assessed by Heartburn Reflux Dyspepsia Questionnaire (HRDQ), were randomised to add-on Gaviscon or placebo (20 mL after meals and bedtime). The exploratory study endpoint was change in HRDQ score during treatment vs run-in. The confirmatory study endpoint was "response" defined as ≥3 days reduction in the number of "bad" days (HRDQ [heartburn/regurgitation] >0.70) during treatment vs run-in. RESULTS In the exploratory study, significantly greater reductions in HRDQ scores (heartburn/regurgitation) were observed in the Gaviscon vs placebo (least squares mean difference [95% CI] -2.10 [-3.71 to -0.48]; P=.012). Post hoc "responder" analysis of the exploratory study also revealed significantly more Gaviscon patients (75%) achieved ≥3 days reduction in "bad" days vs placebo patients (36%), P=.005. In the confirmatory study, symptomatic improvement was observed with add-on Gaviscon (51%) but there was no significant difference in response vs placebo (48%) (OR (95% CI) 1.15 (0.69-1.91), P=.5939). CONCLUSIONS Adding Gaviscon to PPI reduced breakthrough GERD symptoms but a nearly equal response was observed for placebo. Response to intervention may vary according to whether symptoms are functional in origin.
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Affiliation(s)
| | | | | | | | - P Bytzer
- Zealand University Hospital, University of Copenhagen, Copenhagen, Denmark
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35
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Leiman DA, Riff BP, Morgan S, Metz DC, Falk GW, French B, Umscheid CA, Lewis J. Alginate therapy is effective treatment for GERD symptoms: a systematic review and meta-analysis. Dis Esophagus 2017; 30:1-9. [PMID: 28375448 PMCID: PMC6036656 DOI: 10.1093/dote/dow020] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 11/15/2016] [Indexed: 12/11/2022]
Abstract
In patients with gastroesophageal reflux disease (GERD) and erosive esophagitis, treatment with proton pump inhibitors (PPIs) is highly effective. However, in some patients, especially those with nonerosive reflux disease or atypical GERD symptoms, acid-suppressive therapy with PPIs is not as successful. Alginates are medications that work through an alternative mechanism by displacing the postprandial gastric acid pocket. This study performed a systematic review and meta-analysis to examine the benefit of alginate-containing compounds in the treatment of patients with symptoms of GERD. PubMed/MEDLINE, Embase, and the Cochrane library electronic databases were searched through October 2015 for randomized controlled trials comparing alginate-containing compounds to placebo, antacids, histamine-2 receptor antagonists (H2RAs), or PPIs for the treatment of GERD symptoms. Additional studies were identified through a bibliography review. Non-English studies and those with pediatric patients were excluded. Meta-analyses were performed using random-effect models to calculate odds ratios (OR). Heterogeneity between studies was estimated using the I2 statistic. Analyses were stratified by type of comparator. The search strategy yielded 665 studies and 15 (2.3%) met inclusion criteria. Fourteen were included in the meta-analysis (N = 2095 subjects). Alginate-based therapies increased the odds of resolution of GERD symptoms when compared to placebo or antacids (OR: 4.42; 95% CI 2.45-7.97) with a moderate degree of heterogeneity between studies (I2 = 71%, P = .001). Compared to PPIs or H2RAs, alginates appear less effective but the pooled estimate was not statistically significant (OR: 0.58; 95% CI 0.27-1.22). Alginates are more effective than placebo or antacids for treating GERD symptoms.
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Affiliation(s)
- D. A. Leiman
- Division of Gastroenterology, Duke University School of Medicine, Durham, North Carolina
| | - B. P. Riff
- Division of Gastroenterology, Icahn School of Medicine at Mt. Sinai, New York, New York, USA
| | | | | | | | - B. French
- Center for Evidence-based Practice,Department of Biostatistics and Epidemiology,Leonard Davis Institute of Health Economics,Center for Clinical Epidemiology and Biostatistics
| | - C. A. Umscheid
- Center for Evidence-based Practice,Department of Biostatistics and Epidemiology,Leonard Davis Institute of Health Economics,Center for Clinical Epidemiology and Biostatistics,Division of General Internal Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - J. D. Lewis
- Division of Gastroenterology,Department of Biostatistics and Epidemiology,Leonard Davis Institute of Health Economics,Center for Clinical Epidemiology and Biostatistics
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36
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Savarino V, Pace F, Scarpignato C. Randomised clinical trial: mucosal protection combined with acid suppression in the treatment of non-erosive reflux disease - efficacy of Esoxx, a hyaluronic acid-chondroitin sulphate based bioadhesive formulation. Aliment Pharmacol Ther 2017; 45:631-642. [PMID: 28116754 PMCID: PMC5347926 DOI: 10.1111/apt.13914] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 10/04/2016] [Accepted: 12/04/2016] [Indexed: 12/12/2022]
Abstract
BACKGROUND Several studies have shown that patients with non-erosive reflux disease (NERD) are less responsive to proton pump inhibitors (PPIs) than those with erosive disease as they belong to different subgroups, in whom factors other than acid can trigger symptoms. AIM To evaluate whether combined therapy (mucosal protection plus acid suppression) would improve symptom relief compared to PPI treatment alone. METHODS In a multicenter, randomised, double-blind trial, 154 patients with NERD were randomised to receive Esoxx (Alfa Wassermann, Bologna, Italy), a hyaluronic acid-chondroitin sulphate based bioadhesive formulation, or placebo, in addition to acid suppression with standard dose PPIs for 2 weeks. Symptoms (heartburn, acid regurgitation, retrosternal pain and acid taste in the mouth) and health-related quality of life (HRQL) were evaluated before and after treatment. The primary endpoint was the proportion of patients with at least a 3-point reduction in the total symptom score. RESULTS At the end of treatment, the primary endpoint was reached by 52.6% of patients taking Esoxx compared to 32.1% of those given placebo (P < 0.01). The same was true also for HRQL, evaluated by means of the Short Form-36 questionnaire, which improved with both treatments, but some items were significantly better after Esoxx plus PPI therapy. CONCLUSION The synergistic effect of Essox with PPI treatment suggests that mucosal protection added to acid suppression could improve symptoms and HRQL in NERD patients.
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Affiliation(s)
- V. Savarino
- Gastroenterology & Digestive Endoscopy UnitDepartment of Internal MedicineUniversity of GenoaGenovaItaly
| | - F. Pace
- Division of Gastroenterology & Digestive EndoscopyBolognini Teaching HospitalMilanoItaly
| | - C. Scarpignato
- Clinical Pharmacology & Digestive Pathophysiology UnitDepartment of Clinical & Experimental MedicineUniversity of ParmaParmaItaly
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Leiman DA, Riff BP, Morgan S, Metz DC, Falk GW, French B, Umscheid CA, Lewis JD. Alginate therapy is effective treatment for gastroesophageal reflux disease symptoms: a systematic review and meta-analysis. Dis Esophagus 2017; 30:1-8. [PMID: 27671545 DOI: 10.1111/dote.12535] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In patients with gastroesophageal reflux disease (GERD) and erosive esophagitis, treatment with proton pump inhibitors (PPIs) is highly effective. However, in some patients, especially those with non-erosive reflux disease or atypical GERD symptoms, acid suppressive therapy with PPIs is not as successful. Alginates are medications that work through an alternative mechanism by displacing the post-prandial gastric acid pocket. We performed a systematic review and meta-analysis to examine the benefit of alginate-containing compounds in the treatment of patients with symptoms of GERD.PubMed/MEDLINE, Embase and the Cochrane library electronic databases were searched through October 2015 for randomized controlled trials comparing alginate-containing compounds to placebo, antacids, histamine-2 receptor antagonists (H2RAs) or PPIs for the treatment of GERD symptoms. Additional studies were identified through bibliography review. Non-English studies and those with pediatric patients were excluded. Meta-analyses were performed using random-effects models to calculate odds ratios (OR). Heterogeneity between studies was estimated using the I2 statistic. Analyses were stratified by type of comparator. The search strategy yielded 665 studies and 15 (2.3%) met inclusion criteria. Fourteen were included in the meta-analysis (N = 2095 subjects). Alginate-based therapies increased the odds of resolution of GERD symptoms when compared to placebo or antacids (OR: 4.42; 95% CI 2.45-7.97) with a moderate degree of heterogeneity between studies (I2 = 71%, P = .001). Compared to PPIs or H2RAs, alginates appear less effective but the pooled estimate was not statistically significant (OR: 0.58; 95% CI 0.27-1.22). Alginates are more effective than placebo or antacids for treating GERD symptoms.
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Affiliation(s)
- D A Leiman
- Division of Gastroenterology, Duke University School of Medicine, Durham, North Carolina, USA
| | - B P Riff
- Division of Gastroenterology, Icahn School of Medicine at Mt. Sinai, New York, New York, USA
| | - S Morgan
- Center for Evidence-based Practice, niversity of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - D C Metz
- Division of Gastroenterology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - G W Falk
- Division of Gastroenterology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - B French
- Center for Evidence-based Practice, niversity of Pennsylvania Perelman School of Medicine, Philadelphia, PA.,Department of Biostatistics and Epidemiology, niversity of Pennsylvania Perelman School of Medicine, Philadelphia, PA.,Leonard Davis Institute of Health Economics, niversity of Pennsylvania Perelman School of Medicine, Philadelphia, PA.,Center for Clinical Epidemiology and Biostatistics, niversity of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - C A Umscheid
- Center for Evidence-based Practice, niversity of Pennsylvania Perelman School of Medicine, Philadelphia, PA.,Department of Biostatistics and Epidemiology, niversity of Pennsylvania Perelman School of Medicine, Philadelphia, PA.,Leonard Davis Institute of Health Economics, niversity of Pennsylvania Perelman School of Medicine, Philadelphia, PA.,Center for Clinical Epidemiology and Biostatistics, niversity of Pennsylvania Perelman School of Medicine, Philadelphia, PA.,Division of General Internal Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - J D Lewis
- Division of Gastroenterology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA.,Department of Biostatistics and Epidemiology, niversity of Pennsylvania Perelman School of Medicine, Philadelphia, PA.,Leonard Davis Institute of Health Economics, niversity of Pennsylvania Perelman School of Medicine, Philadelphia, PA.,Center for Clinical Epidemiology and Biostatistics, niversity of Pennsylvania Perelman School of Medicine, Philadelphia, PA
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Efficacy and Safety of a Natural Remedy for the Treatment of Gastroesophageal Reflux: A Double-Blinded Randomized-Controlled Study. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 2016:2581461. [PMID: 27818697 PMCID: PMC5080480 DOI: 10.1155/2016/2581461] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 09/22/2016] [Indexed: 12/16/2022]
Abstract
Gastroesophageal reflux (GER) is a common, chronic, relapsing symptom. Often people self-diagnose and self-treat it even though health-related quality of life is significantly impaired. In the lack of a valid alternative approach, current treatments focus on suppression of gastric acid secretion by the use of proton pump inhibitors (PPIs), but people with GER have a significantly lower response rate to therapy. We designed a randomized double-blinded controlled clinical study to evaluate the efficacy and the safety of a formulation based on sodium alginate/bicarbonate in combination with extracts obtained from Opuntia ficus-indica and Olea europaea associated with polyphenols (Mucosave®; verum), on GER-related symptoms. Male/female 118 (intention to treat) subjects with moderate GER and having at least 2 to 6 days of GER episodes/week were treated with verum (6 g/day) or placebo for two months. The questionnaires Gastroesophageal Reflux Disease-Health-Related Quality of Life (GERD-HRQoL) and Gastroesophageal Reflux Disease Symptom Assessment Scale (GSAS) were self-administered by participants before the treatment and at the end of the treatment. Verum produced statistically significant reduction of GERD-HRQoL and GSAS scores, −56.5% and −59.1%, respectively, in comparison to placebo. Heartburn and acid regurgitation episodes for week were significantly reduced by verum (p < 0.01). Results indicate that Mucosave formulation provides an effective and well-tolerated treatment for reducing the frequency and intensity of symptoms associated with gastroesophageal reflux.
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Fock KM, Talley N, Goh KL, Sugano K, Katelaris P, Holtmann G, Pandolfino JE, Sharma P, Ang TL, Hongo M, Wu J, Chen M, Choi MG, Law NM, Sheu BS, Zhang J, Ho KY, Sollano J, Rani AA, Kositchaiwat C, Bhatia S. Asia-Pacific consensus on the management of gastro-oesophageal reflux disease: an update focusing on refractory reflux disease and Barrett's oesophagus. Gut 2016; 65:1402-15. [PMID: 27261337 DOI: 10.1136/gutjnl-2016-311715] [Citation(s) in RCA: 130] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 05/15/2016] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Since the publication of the Asia-Pacific consensus on gastro-oesophageal reflux disease in 2008, there has been further scientific advancement in this field. This updated consensus focuses on proton pump inhibitor-refractory reflux disease and Barrett's oesophagus. METHODS A steering committee identified three areas to address: (1) burden of disease and diagnosis of reflux disease; (2) proton pump inhibitor-refractory reflux disease; (3) Barrett's oesophagus. Three working groups formulated draft statements with supporting evidence. Discussions were done via email before a final face-to-face discussion. We used a Delphi consensus process, with a 70% agreement threshold, using Grading of Recommendations Assessment, Development and Evaluation (GRADE) criteria to categorise the quality of evidence and strength of recommendations. RESULTS A total of 32 statements were proposed and 31 were accepted by consensus. A rise in the prevalence rates of gastro-oesophageal reflux disease in Asia was noted, with the majority being non-erosive reflux disease. Overweight and obesity contributed to the rise. Proton pump inhibitor-refractory reflux disease was recognised to be common. A distinction was made between refractory symptoms and refractory reflux disease, with clarification of the roles of endoscopy and functional testing summarised in two algorithms. The definition of Barrett's oesophagus was revised such that a minimum length of 1 cm was required and the presence of intestinal metaplasia no longer necessary. We recommended the use of standardised endoscopic reporting and advocated endoscopic therapy for confirmed dysplasia and early cancer. CONCLUSIONS These guidelines standardise the management of patients with refractory gastro-oesophageal reflux disease and Barrett's oesophagus in the Asia-Pacific region.
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Affiliation(s)
- Kwong Ming Fock
- Department of Gastroenterology and Hepatology, Changi General Hospital, Singapore, Singapore
| | - Nicholas Talley
- Faculty of Health and Medicine, University of Newcastle, Callaghan, New South Wales, Australia
| | - Khean Lee Goh
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Kentaro Sugano
- Department of Medicine, Jichi Medical University, Tochigi, Japan
| | - Peter Katelaris
- Gastroenterology Department, Concord Hospital, University of Sydney, Sydney, New South Wales, Australia
| | - Gerald Holtmann
- Faculty of Medicine and Biomedical Sciences, The University of Queensland, Brisbane, Queensland, Australia
| | - John E Pandolfino
- Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Prateek Sharma
- University of Kansas and VA Medical Center, Kansas City, Kansas, USA
| | - Tiing Leong Ang
- Department of Gastroenterology and Hepatology, Changi General Hospital, Singapore, Singapore
| | - Michio Hongo
- Department of Comprehensive Medicine, Tohoku University, Sendai, Japan
| | - Justin Wu
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Shatin, China
| | - Minhu Chen
- Division of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Myung-Gyu Choi
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Ngai Moh Law
- Department of Gastroenterology and Hepatology, Changi General Hospital, Singapore, Singapore
| | - Bor-Shyang Sheu
- Department of Internal Medicine, National Cheng Kung University Hospital, Medical College, National Cheng Kung University, Tainan, Taiwan
| | - Jun Zhang
- The Second Affiliated Hospital, Xian Jiaotong University, Xian, China
| | - Khek Yu Ho
- Division of Gastroenterology and Hepatology, National University Hospital, Singapore, Singapore
| | - Jose Sollano
- Department of Medicine, University of Sano Tomas, Manila, Philippines
| | - Abdul Aziz Rani
- Faculty of Medicine, University of Indonesia, Jakarta, Indonesia
| | - Chomsri Kositchaiwat
- Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Shobna Bhatia
- Department of Gastroenterology, Seth GS Medical College and King Edward Memorial Hospital, Mumbai, India
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Reimer C, Lødrup AB, Smith G, Wilkinson J, Bytzer P. Randomised clinical trial: alginate (Gaviscon Advance) vs. placebo as add-on therapy in reflux patients with inadequate response to a once daily proton pump inhibitor. Aliment Pharmacol Ther 2016; 43:899-909. [PMID: 26909885 DOI: 10.1111/apt.13567] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Revised: 12/29/2015] [Accepted: 02/01/2016] [Indexed: 12/11/2022]
Abstract
BACKGROUND Many reflux patients remain symptomatic on a standard dose of proton pump inhibitor (PPI). Alginates decrease the number of reflux events by forming a raft on top of the stomach content and thus offer a supplemental mechanism of action to acid suppression. AIM To assess the efficacy of an alginate (Gaviscon Advance, Reckitt Benckiser, Slough, UK) on reflux symptoms in patients with persistent symptoms despite once daily PPI. METHODS This was a multicentre, randomised, placebo-controlled, 7-day double-blind trial preceded by a 7-day run-in period. Reflux symptoms were assessed using the Heartburn Reflux Dyspepsia Questionnaire (HRDQ). Based on symptom score during run-in, eligible patients were randomised to Gaviscon Advance 10 mL four times a day or placebo in addition to a once daily PPI. The primary endpoint was change in HRDQ score post-treatment compared to baseline. RESULTS One hundred and thirty-six patients were randomised. Change in HRDQ reflux score was significantly greater for Gaviscon Advance (mean: -5.0, s.d.: 4.7) than for placebo (mean: -3.5, s.d.: 5.5) with an LS mean difference of 1.6 [95% CI -3.1 to -0.1], P = 0.03. A decrease in the mean (s.d.) number of nights with symptoms was observed from 3.6 (2.8) to 3.0 (3.0) in the placebo group and from 3.9 (2.8) to 2.2 (2.7) for the Gaviscon Advance group. This reduction was significantly greater in the Gaviscon Advance group than in the placebo group [LS mean difference = -0.9, 95% CI (-1.6 to -0.2), P < 0.01]. CONCLUSION In patients with residual reflux symptoms despite PPI treatment, adding an alginate offers additional decrease in the burden of reflux symptoms (EudraCT/IND Number: 2011-005486-21).
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Affiliation(s)
- C Reimer
- Department of Gastroenterology, Hvidovre Hospital, Hvidovre, Denmark
| | - A B Lødrup
- Department of Gastroenterology, Køge Hospital, Køge, Denmark.,Department of Clinical Medicine, Copenhagen University, Copenhagen, Denmark
| | - G Smith
- Reckitt Benckiser Brands, Slough, UK
| | | | - P Bytzer
- Department of Gastroenterology, Køge Hospital, Køge, Denmark.,Department of Clinical Medicine, Copenhagen University, Copenhagen, Denmark
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41
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Abstract
Gastroesophageal reflux disease is one of the commonest chronic conditions in the western world and its prevalence is increasing worldwide. The discovery of the acid pocket explained the paradox of acid reflux occurring more frequently in the postprandial period despite intragastric acidity being low due to the buffering effect of the meal. The acid pocket was first described in 2001 when it was detected as an area of low pH immediately distal to the cardia using dual pH electrode pull-through studies 15 minutes after a meal. It was hypothesized that there was a local pocket of acid close to the gastroesophageal junction that escapes the buffering effect of the meal, and that this is the source of postprandial acidic reflux. The presence of the acid pocket has been confirmed in other studies using different techniques including high-resolution pHmetry, Bravo capsule, magnetic resonance imaging, and scintigraphy. This review aims to describe what we know about the acid pocket including its length, volume, fluid constituents, and its relationship to the lower esophageal sphincter and squamocolumnar junction. We will discuss the possible mechanisms that lead to the formation of the acid pocket and examine what differences exist in patients who suffer from acid reflux. Treatments for reflux disease that affect the acid pocket will also be discussed.
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42
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Sun J, Yang C, Zhao H, Zheng P, Wilkinson J, Ng B, Yuan Y. Randomised clinical trial: the clinical efficacy and safety of an alginate-antacid (Gaviscon Double Action) versus placebo, for decreasing upper gastrointestinal symptoms in symptomatic gastroesophageal reflux disease (GERD) in China. Aliment Pharmacol Ther 2015; 42:845-54. [PMID: 26228097 PMCID: PMC5042071 DOI: 10.1111/apt.13334] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 06/26/2015] [Accepted: 07/06/2015] [Indexed: 12/16/2022]
Abstract
BACKGROUND There is a paucity of large-scale studies evaluating the clinical benefit of the Gaviscon Double Action (DA) alginate-antacid formulation for treating gastroesophageal reflux disease (GERD) symptoms. AIM Randomised double-blind placebo-controlled parallel-group study to evaluate efficacy and safety of Gaviscon DA in reducing heartburn, regurgitation and dyspepsia symptoms in individuals with mild-to-moderate GERD in China. METHODS Participants with symptomatic GERD (n = 1107) were randomised to receive Gaviscon DA or placebo (two tablets four times daily) for seven consecutive days. The primary endpoint compared the change in Reflux Disease Questionnaire (RDQ) score for the GERD (heartburn + regurgitation) dimension between Gaviscon DA and placebo. Secondary endpoints compared the change in RDQ scores for individual heartburn, regurgitation and dyspepsia dimensions, overall treatment evaluation (OTE) scores and incidence of adverse events (AEs). RESULTS Mean RDQ GERD scores: 2.51 for Gaviscon DA and 2.50 for placebo at baseline; 1.25 for Gaviscon DA and 1.46 for placebo post treatment. Gaviscon DA was statistically superior to placebo in reducing GERD and dyspepsia RDQ scores [least-squares mean (LSM) difference: GERD -0.21, P < 0.0001; dyspepsia -0.18, P = 0.0004], despite a substantial placebo response. The Gaviscon DA group reported more favourable overall treatment responses than the placebo group across all OTE categories (P < 0.0001). Superior relief of GERD symptoms was observed both in those with non-erosive and those with erosive reflux disease (LSM difference -0.14 [P = 0.038] and -0.29 [P < 0.0001] respectively). Incidence of AEs was similar in both groups. CONCLUSION Gaviscon DA tablets provide effective and safe reduction in acid reflux and dyspepsia symptoms in Chinese individuals with mild-to-moderate GERD. ClinicalTrials.gov: NCT01869491.
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Affiliation(s)
- J. Sun
- Ruijin HospitalShanghai Jiaotong University School of MedicineShanghaiChina
| | - C. Yang
- Shanghai Tongji HospitalShanghaiChina
| | - H. Zhao
- China‐Japan Friendship HospitalBeijingChina
| | | | | | - B. Ng
- Reckitt BenckiserSloughUK
| | - Y. Yuan
- Ruijin HospitalShanghai Jiaotong University School of MedicineShanghaiChina
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Sheu BS, Chiu CT, Lee YC, Chang CY, Wu DC, Liou JM, Wu MS, Chang WL, Wu CY, Lin JT. Consensus of gastroesophageal reflux disease in Taiwan with endoscopy-based approach covered by National Health Insurance. ADVANCES IN DIGESTIVE MEDICINE 2015. [DOI: 10.1016/j.aidm.2015.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Hao J, Hao C, Zhang L, Liu X, Zhou X, Dun Y, Li H, Li G, Zhao X, An Y, Liu J, Yu G. OM2, a Novel Oligomannuronate-Chromium(III) Complex, Promotes Mitochondrial Biogenesis and Lipid Metabolism in 3T3-L1 Adipocytes via the AMPK-PGC1α Pathway. PLoS One 2015; 10:e0131930. [PMID: 26176781 PMCID: PMC4503612 DOI: 10.1371/journal.pone.0131930] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 06/08/2015] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND In our previous studies, we prepared novel oligomannuronate-chromium(III) complexes (OM2, OM4) from marine alginate, and found that these compounds sensitize insulin action better than oligomannuronate(OM), chromium, and metformin in C2C12 skeletal muscle cells. In the present study, we studied their effects on mitochondrial biogenesis, lipid metabolism, and the underlying molecular mechanisms in differentiated 3T3-L1 adipocytes. METHODOLOGY/PRINCIPAL FINDINGS We firstly used the pGL3-PGC1α and pGL3-ATGL promoter plasmids to compare their effects on PGC1α and ATGL transcription activities. Then mitochondrial biogenesis was quantified by transmission electron microscopy and MitoTracker staining. Mitochondrial oxygen consumption and fatty acid oxidation were measured by an oxygen biosensor system and ³H-labelled water scintillation. The mitochondrial DNA and mRNA involved in mitochondrial biogenesis and lipid oxidation were evaluated by real-time PCR. AMPK together with other protein expression levels were measured by western blotting. The inhibitor compound C and siRNA of PGC1α were used to inhibit the OM2-induced AMPK-PGC1α signaling pathway. And we found that OM2 stimulated AMPK-PGC1α pathway in the 3T3-L1 adipocytes, which were correlated with induced mitochondrial biogenesis, improved mitochondrial function, and reduced lipid accumulation by enhanced fatty acid β-oxidation and augmented ATGL protein expression. CONCLUSIONS/SIGNIFICANCE Our data indicated that the marine oligosaccharide-derived OM2 might represent a novel class of molecules that could be useful for type 2 diabetes prevention and treatment by up-regulating AMPK-PGC1α signaling pathway.
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Affiliation(s)
- Jiejie Hao
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao, 266003, China
| | - Cui Hao
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao, 266003, China
| | - Lijuan Zhang
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao, 266003, China
| | - Xin Liu
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao, 266003, China
| | - Xiaolin Zhou
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao, 266003, China
| | - Yunlou Dun
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao, 266003, China
| | - Haihua Li
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao, 266003, China
| | - Guangsheng Li
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao, 266003, China
| | - Xiaoliang Zhao
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao, 266003, China
| | - Yuanyuan An
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao, 266003, China
| | - Jiankang Liu
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Guangli Yu
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao, 266003, China
- * E-mail:
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45
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Avdeev VG. Alginates in therapy for gastroesophageal reflux disease. TERAPEVT ARKH 2015; 87:118-121. [DOI: 10.17116/terarkh2015875118-121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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46
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Avdeev VG. [Some issues of the diagnosis and treatment of gastroesophageal reflux disease]. TERAPEVT ARKH 2015. [PMID: 28635804 DOI: 10.17116/terarkh20158710120-124] [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: 11/17/2022]
Abstract
The clinical inefficacy of proton pump inhibitors (PPIs) is very frequently encountered in nonerosive gastroesophageal reflux disease (NERD) in particular. Postprandial acid pocket, weak-acid or alkaline reflux, etc. are one of the causes of resistance to antisecretory drugs. Alginates serve as a good alternative to PPIs in treating NERD and gastroesophageal reflux in children and pregnant women. The alginate test may help diagnose NERD.
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Affiliation(s)
- V G Avdeev
- Department of Internal Medicine, Faculty of Fundamental Medicine, M.V. Lomonosov Moscow State University, Moscow, Russia
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47
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Lødrup A, Reimer C, Bytzer P. Use of antacids, alginates and proton pump inhibitors: a survey of the general Danish population using an internet panel. Scand J Gastroenterol 2014; 49:1044-50. [PMID: 24874283 DOI: 10.3109/00365521.2014.923504] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Both over-the-counter medicine, such as antacids or alginates, and proton pump inhibitors (PPI) are used for treating acid-related disorders. We sought to describe what characterizes users of these different medicines, including long-term PPI users within the general population. METHOD A cross-sectional survey was conducted in an internet panel representative of the Danish adult population in 2012. Data queried included antacid/alginate and PPI use, reason for therapy, co-medication, and presence of upper gastrointestinal symptoms. Long-term PPI use was defined as using PPI ≥1/3 of the last year (∼120 days). Risk of long-term PPI use was estimated by logistic regression. RESULTS A total of 18,223 people received the questionnaire, of which 52% (9390) responded. Antacid/alginate use was reported by 23%; 16% reported use of only antacid/alginate. PPI use was reported by 13.6%; 6.2% were defined as long-term PPI users. Antacid/alginate users were younger, used less co-medication, had most often started on therapy because of reflux symptoms, and had less often ongoing symptoms. Risk of long-term PPI use appeared to be increased in male gender, by renewing PPI prescription by phone/e-mail, using co-medication, and having started on PPI for several reasons. Combination of antacid/alginate and PPI was reported by approximately 50% of those on therapy with weekly or daily symptoms. CONCLUSION 23% of Danish adults were using antacids or alginates and 14% were using PPI, of which one-half were on long-term therapy. Prescription renewal by phone or e-mail and use of other prescription medication were associated with long-term PPI use, indicating a behavioral pattern, in which unnecessary PPI therapy may be maintained.
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Affiliation(s)
- Anders Lødrup
- Department of Medicine, Køge Hospital , Koege , Denmark
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Yamamoto A, Itoh T, Nasu R, Nishida R. Sodium alginate ameliorates indomethacin-induced gastrointestinal mucosal injury via inhibiting translocation in rats. World J Gastroenterol 2014; 20:2641-2652. [PMID: 24627600 PMCID: PMC3949273 DOI: 10.3748/wjg.v20.i10.2641] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 11/20/2013] [Accepted: 01/02/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effects of sodium alginate (AL-Na) on indomethacin-induced small intestinal lesions in rats.
METHODS: Gastric injury was assessed by measuring ulcerated legions 4 h after indomethacin (25 mg/kg) administration. Small intestinal injury was assessed by measuring ulcerated legions 24 h after indomethacin (10 mg/kg) administration. AL-Na and rebamipide were orally administered. Myeloperoxidase activity in the stomach and intestine were measured. Microvascular permeability, superoxide dismutase content, glutathione peroxidase activity, catalase activity, red blood cell count, white blood cell count, mucin content and enterobacterial count in the small intestine were measured.
RESULTS: AL-Na significantly reduced indomethacin-induced ulcer size and myeloperoxidase activity in the stomach and small intestine. AL-Na prevented increases in microvascular permeability, superoxide dismutase content, glutathione peroxidase activity and catalase activity in small intestinal injury induced by indomethacin. AL-Na also prevented decreases in red blood cells and white blood cells in small intestinal injury induced by indomethacin. Moreover, AL-Na suppressed mucin depletion by indomethacin and inhibited infiltration of enterobacteria into the small intestine.
CONCLUSION: These results indicate that AL-Na ameliorates non-steroidal anti-inflammatory drug-induced small intestinal enteritis via bacterial translocation.
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Puesta al día en el reflujo gastroesofágico. GASTROENTEROLOGIA Y HEPATOLOGIA 2014; 37:73-82. [DOI: 10.1016/j.gastrohep.2013.11.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 11/17/2013] [Accepted: 11/18/2013] [Indexed: 02/08/2023]
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An alginate-antacid formulation localizes to the acid pocket to reduce acid reflux in patients with gastroesophageal reflux disease. Clin Gastroenterol Hepatol 2013; 11:1585-91; quiz e90. [PMID: 23669304 DOI: 10.1016/j.cgh.2013.04.046] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 04/24/2013] [Accepted: 04/25/2013] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Alginate rafts (polysaccharide polymers that precipitate into a low-density viscous gel when they contact gastric acid) have been reported to form at the acid pocket, an unbuffered pool of acid that floats on top of ingested food and causes postprandial acid reflux. We studied the location of an alginate formulation in relation to the acid pocket and the corresponding effects on reflux parameters and acid pocket positioning in patients with gastroesophageal reflux disease (GERD). METHODS We randomly assigned patients with symptomatic GERD and large hiatal hernias to groups who were given either (111)In-labeled alginate-antacid (n = 8, Gaviscon Double Action Liquid) or antacid (n = 8, Antagel) after a standard meal. The relative positions of labeled alginate and acid pocket were analyzed for 2 hours by using scintigraphy; reflux episodes were detected by using high-resolution manometry and pH-impedance monitoring. RESULTS The alginate-antacid label localized to the acid pocket. The number of acid reflux episodes was significantly reduced in patients receiving alginate-antacid (3.5; range, 0-6.5; P = .03) compared with those receiving antacid (15; range, 5-20), whereas time to acid reflux was significantly increased in patients receiving alginate-antacid (63 minutes; range, 23-92) vs those receiving antacid (14 minutes; range, 9-23; P = .01). The acid pocket was located below the diaphragm in 71% of patients given alginate-antacid vs 21% of those given antacid (P = .08). There was an inverse correlation between a subdiaphragm position of the acid pocket and acid reflux (r = -0.76, P < .001). CONCLUSIONS In a study of 16 patients with GERD, we observed that the alginate-antacid raft localizes to the postprandial acid pocket and displaces it below the diaphragm to reduce postprandial acid reflux. These findings indicate the importance of the acid pocket in GERD pathogenesis and establish alginate-antacid as an appropriate therapy for postprandial acid reflux.
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