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Garg V, Narang P, Taneja R. Antacids revisited: review on contemporary facts and relevance for self-management. J Int Med Res 2022; 50:3000605221086457. [PMID: 35343261 PMCID: PMC8966100 DOI: 10.1177/03000605221086457] [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] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Heartburn and acid regurgitation are the typical symptoms of gastroesophageal reflux. Despite the availability of several treatment options, antacids remain the mainstay treatment for gastroesophageal reflux-related symptoms based on their efficacy, safety, and over-the-counter availability. Antacids are generally recommended for adults and children at least 12 years old, and the FDA recommends antacids as the first-line treatment for heartburn in pregnancy. This narrative review summarizes the mechanism, features, and limitations related to different antacid ingredients and techniques available to study the acid neutralization and buffering capacity of antacid formulations. Using supporting clinical evidence for different antacid ingredients, it also discusses the importance of antacids as OTC medicines and first-line therapies for heartburn, particularly in the era of the COVID-19 pandemic, in which reliance on self-care has increased. The review will also assist pharmacists and other healthcare professionals in helping individuals with heartburn to make informed self-care decisions and educating them to ensure that antacids are used in an optimal, safe, and effective manner.
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Affiliation(s)
- Vandana Garg
- Medical Innovation Director, GSK Consumer Healthcare Pte Ltd., Singapore
| | - Prashant Narang
- Medical Affairs Director, GSK Consumer Healthcare Pte Ltd., Gurugram (Haryana), India
| | - Ritu Taneja
- Senior Director, Innovation and Localization Lead, GSK Consumer Healthcare Pte Ltd., Singapore
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2
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The Role of Microbiota in the Pathogenesis of Esophageal Adenocarcinoma. BIOLOGY 2021; 10:biology10080697. [PMID: 34439930 PMCID: PMC8389269 DOI: 10.3390/biology10080697] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/05/2021] [Accepted: 07/12/2021] [Indexed: 12/20/2022]
Abstract
Simple Summary Esophageal adenocarcinoma has a poor 5-year survival rate and is among the highest mortality cancers. Changes in the esophageal microbiome have been associated with cancer pathogenesis; however, the molecular mechanism remains obscure. This review article critically analyzes the molecular mechanisms through which microbiota may mediate the development and progression of esophageal adenocarcinoma and its precursors-gastroesophageal reflux disease and Barrett’s esophagus. It summarizes changes in esophageal microbiome composition in normal and pathologic states and subsequently discusses the role of altered microbiota in disease progression. The potential role of esophageal microbiota in protecting against the development of esophageal adenocarcinoma is also discussed. By doing so, this article highlights specific directions for future research developing microbiome-mediated therapeutics for esophageal adenocarcinoma. Abstract Esophageal adenocarcinoma (EAC) is associated with poor overall five-year survival. The incidence of esophageal cancer is on the rise, especially in Western societies, and the pathophysiologic mechanisms by which EAC develops are of extreme interest. Several studies have proposed that the esophageal microbiome may play an important role in the pathophysiology of EAC, as well as its precursors—gastroesophageal reflux disease (GERD) and Barrett’s esophagus (BE). Gastrointestinal microbiomes altered by inflammatory states have been shown to mediate tumorigenesis directly and are now being considered as novel targets for both cancer treatment and prevention. Elucidating molecular mechanisms through which the esophageal microbiome potentiates the development of GERD, BE, and EAC will provide a foundation on which new therapeutic targets can be developed. This review summarizes current findings that elucidate the molecular mechanisms by which microbiota promote the pathogenesis of GERD, BE, and EAC, revealing potential directions for additional research on the microbiome-mediated pathophysiology of EAC.
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FalcÃo AM, Nasi A, Szachnowicz SÉ, Santa-Cruz F, Seguro FCBC, Sena BF, Duarte A, Sallum RA, Cecconello I. Does the nissen fundoplication procedure improve esophageal dysmotility in patients with barrett's esophagus? Rev Col Bras Cir 2020; 47:e20202637. [PMID: 33263652 DOI: 10.1590/0100-6991e-20202637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 07/20/2020] [Indexed: 01/10/2023] Open
Abstract
OBJECTIVE to evaluate esophageal dysmotility (ED) and the extent of Barrett's esophagus (BE) before and after laparoscopic Nissen fundoplication (LNF) in patients previously diagnosed with BE and ED. METHODS twenty-two patients with BE diagnosed by upper gastrointestinal (GI) endoscopy with biopsies and ED diagnosed by conventional esophageal manometry (CEM) were submitted to a LNF, and followed up with clinical evaluations, upper GI endoscopy with biopsies and CEM, for a minimum of 12 months after the surgical procedure. RESULTS : sixteen patients were male (72.7%) and six were females (27.3%). The mean age was 55.14 (± 15.52) years old. and the mean postoperative follow-up was 26.2 months. The upper GI endoscopy showed that the mean length of BE was 4.09 cm preoperatively and 3.91cm postoperatively (p=0.042). The evaluation of esophageal dysmotility through conventional manometry showed that: the preoperative median of the lower esophageal sphincter resting pressure (LESRP) was 9.15 mmHg and 13.2 mmHg postoperatively (p=0.006). The preoperative median of the esophageal contraction amplitude was 47.85 mmHg, and 57.50 mmHg postoperatively (p=0.408). Preoperative evaluation of esophageal peristalsis showed that 13.6% of the sample presented diffuse esophageal spasm and 9.1% ineffective esophageal motility. In the postoperative, 4.5% of patients had diffuse esophageal spasm, 13.6% of aperistalsis and 22.7% of ineffective motor activity (p=0.133). CONCLUSION LNF decreased the BE extension, increased the LES resting pressure, and increased the amplitude of the distal esophageal contraction; however, it was unable to improve ED.
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Affiliation(s)
- Angela M FalcÃo
- - Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, São Paulo - SP - Brasil.,- Universidade Federal de Pernambuco, Faculdade de Medicina, Departamento de Cirurgia, Recife - PE - Brasil
| | - Ary Nasi
- - Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, São Paulo - SP - Brasil
| | - SÉrgio Szachnowicz
- - Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, São Paulo - SP - Brasil
| | - Fernando Santa-Cruz
- - Universidade Federal de Pernambuco, Faculdade de Medicina, Recife - PE - Brasil
| | - Francisco C B C Seguro
- - Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, São Paulo - SP - Brasil
| | - Brena F Sena
- - Departamento de Epidemiologia, Escola de Saúde Pública T.H. Chan de Harvard, Boston - MA - EUA
| | - AndrÉ Duarte
- - Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, São Paulo - SP - Brasil
| | - Rubens A Sallum
- - Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, São Paulo - SP - Brasil
| | - Ivan Cecconello
- - Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, São Paulo - SP - Brasil
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Wang L, Tan JJ, Wu T, Zhang R, Wu JN, Zeng FF, Liu YL, Han XY, Li YF, Li XP. Association between Laryngeal Pepsin Levels and the Presence of Vocal Fold Polyps. Otolaryngol Head Neck Surg 2016; 156:144-151. [PMID: 28045635 DOI: 10.1177/0194599816676471] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Objective To determine whether pepsin, the main component of refluxed gastric contents, is significantly associated with vocal fold polyps and to evaluate the diagnostic value of pepsin in vocal fold polyps’ tissues. Study Design Cross-sectional study. Setting Nanfang Hospital of Southern Medical University. Subjects and Methods The study included 32 patients with vocal fold polyps and 16 healthy controls between 2011 and 2012. Reflux symptom index and reflux finding score assessments, 24-hour combined multichannel intraluminal impedance and pH monitoring, and biopsy of the vocal fold polyp tissues or posterior laryngeal mucosa (healthy controls) for immunohistochemical pepsin staining were performed. Results The expression of pepsin was significantly higher in patients with vocal fold polyps than in controls (28/32, 75% vs 5/16, 31.25%; P < .001). The pepsin levels were significantly positively correlated with upright position pharyngeal acid reflux and esophageal reflux parameters adjusted by age. Based on pepsin staining data, the sensitivity and negative predictive values of 24-hour pH monitoring, the reflux symptom index, and the reflux finding score were 70% to 84.62%, whereas their specificity and positive predictive values were relatively low (20%-31.58%). Conclusion Pepsin reflux may be a risk factor for vocal fold polyps formation. In addition, pepsin immunohistochemical analysis of polyp biopsy samples appears to be a more sensitive and effective test for diagnosing laryngopharyngeal reflux than the reflux symptom index, the reflux finding score, and 24-hour pH monitoring in a clinical setting.
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Affiliation(s)
- Lu Wang
- Department of Otolaryngology–Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jia-Jie Tan
- Department of Otolaryngology–Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ting Wu
- Department of Otolaryngology–Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Rui Zhang
- Department of Otolaryngology–Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jia-Nuan Wu
- Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Fang-Fang Zeng
- Department of Otolaryngology–Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - You-Li Liu
- Department of Otolaryngology–Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiao-Yan Han
- Department of Otolaryngology–Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yan-Fei Li
- Department of Otolaryngology–Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiang-Ping Li
- Department of Otolaryngology–Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Savarino E, Martinucci I, Furnari M, Romana C, Pellegatta G, Moscatelli A, Bodini G, Marabotto E, Savarino V, de Bortoli N, Blandizzi C. Vonoprazan for treatment of gastroesophageal reflux: pharmacodynamic and pharmacokinetic considerations. Expert Opin Drug Metab Toxicol 2016; 12:1333-1341. [PMID: 27428571 DOI: 10.1080/17425255.2016.1214714] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Edoardo Savarino
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - Irene Martinucci
- Division of Gastroenterology, Department of Internal Medicine, University of Pisa, Pisa, Italy
| | - Manuele Furnari
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Chiara Romana
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Gaia Pellegatta
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Alessandro Moscatelli
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Giorgia Bodini
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Elisa Marabotto
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Vincenzo Savarino
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Nicola de Bortoli
- Division of Gastroenterology, Department of Internal Medicine, University of Pisa, Pisa, Italy
| | - Corrado Blandizzi
- Division of Pharmacology and Chemotherapy, University of Pisa, Pisa, Italy
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Martinucci I, de Bortoli N, Russo S, Bertani L, Furnari M, Mokrowiecka A, Malecka-Panas E, Savarino V, Savarino E, Marchi S. Barrett’s esophagus in 2016: From pathophysiology to treatment. World J Gastrointest Pharmacol Ther 2016; 7:190-206. [PMID: 27158534 PMCID: PMC4848241 DOI: 10.4292/wjgpt.v7.i2.190] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 11/05/2015] [Accepted: 03/18/2016] [Indexed: 02/06/2023] Open
Abstract
Esophageal complications caused by gastroesophageal reflux disease (GERD) include reflux esophagitis and Barrett’s esophagus (BE). BE is a premalignant condition with an increased risk of developing esophageal adenocarcinoma (EAC). The carcinogenic sequence may progress through several steps, from normal esophageal mucosa through BE to EAC. A recent advent of functional esophageal testing (particularly multichannel intraluminal impedance and pH monitoring) has helped to improve our knowledge about GERD pathophysiology, including its complications. Those findings (when properly confirmed) might help to predict BE neoplastic progression. Over the last few decades, the incidence of EAC has continued to rise in Western populations. However, only a minority of BE patients develop EAC, opening the debate regarding the cost-effectiveness of current screening/surveillance strategies. Thus, major efforts in clinical and research practice are focused on new methods for optimal risk assessment that can stratify BE patients at low or high risk of developing EAC, which should improve the cost effectiveness of screening/surveillance programs and consequently significantly affect health-care costs. Furthermore, the area of BE therapeutic management is rapidly evolving. Endoscopic eradication therapies have been shown to be effective, and new therapeutic options for BE and EAC have emerged. The aim of the present review article is to highlight the status of screening/surveillance programs and the current progress of BE therapy. Moreover, we discuss the recent introduction of novel esophageal pathophysiological exams that have improved the knowledge of the mechanisms linking GERD to BE.
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Ganz RA, Edmundowicz SA, Taiganides PA, Lipham JC, Smith CD, DeVault KR, Horgan S, Jacobsen G, Luketich JD, Smith CC, Schlack-Haerer SC, Kothari SN, Dunst CM, Watson TJ, Peters J, Oelschlager BK, Perry KA, Melvin S, Bemelman WA, Smout AJPM, Dunn D. Long-term Outcomes of Patients Receiving a Magnetic Sphincter Augmentation Device for Gastroesophageal Reflux. Clin Gastroenterol Hepatol 2016; 14:671-7. [PMID: 26044316 DOI: 10.1016/j.cgh.2015.05.028] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 05/09/2015] [Accepted: 05/11/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS Based on results from year 2 of a 5-year trial, in 2012 the US Food and Drug Administration approved the use of a magnetic device to augment lower esophageal sphincter function in patients with gastroesophageal reflux disease (GERD). We report the final results of 5 years of follow-up evaluation of patients who received this device. METHODS We performed a prospective study of the safety and efficacy of a magnetic device in 100 adults with GERD for 6 months or more, who were partially responsive to daily proton pump inhibitors (PPIs) and had evidence of pathologic esophageal acid exposure, at 14 centers in the United States and The Netherlands. The magnetic device was placed using standard laparoscopic tools and techniques. Eighty-five subjects were followed up for 5 years to evaluate quality of life, reflux control, use of PPIs, and side effects. The GERD-health-related quality of life (GERD-HRQL) questionnaire was administered at baseline to patients on and off PPIs, and after placement of the device; patients served as their own controls. A partial response to PPIs was defined as a GERD-HRQL score of 10 or less on PPIs and a score of 15 or higher off PPIs, or a 6-point or more improvement when scores on vs off PPI were compared. RESULTS Over the follow-up period, no device erosions, migrations, or malfunctions occurred. At baseline, the median GERD-HRQL scores were 27 in patients not taking PPIs and 11 in patients on PPIs; 5 years after device placement this score decreased to 4. All patients used PPIs at baseline; this value decreased to 15.3% at 5 years. Moderate or severe regurgitation occurred in 57% of subjects at baseline, but only 1.2% at 5 years. All patients reported the ability to belch and vomit if needed. Bothersome dysphagia was present in 5% at baseline and in 6% at 5 years. Bothersome gas-bloat was present in 52% at baseline and decreased to 8.3% at 5 years. CONCLUSIONS Augmentation of the lower esophageal sphincter with a magnetic device provides significant and sustained control of reflux, with minimal side effects or complications. No new safety risks emerged over a 5-year follow-up period. These findings validate the long-term safety and efficacy of the magnetic sphincter augmentation device for patients with GERD. ClinicalTrials.gov no: NCT00776997.
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Affiliation(s)
| | - Steven A Edmundowicz
- Division of Gastroenterology, Washington University School of Medicine, St. Louis, Missouri
| | | | - John C Lipham
- Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - C Daniel Smith
- Department of Surgery, Mayo Clinic, Jacksonville, Florida
| | - Kenneth R DeVault
- Department of Gastroenterology and Hepatology, Mayo Clinic, Jacksonville, Florida
| | - Santiago Horgan
- Department of Surgery, University of California at San Diego, San Diego, California
| | - Garth Jacobsen
- Department of Surgery, University of California at San Diego, San Diego, California
| | - James D Luketich
- Division of Thoracic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania
| | | | | | - Shanu N Kothari
- Department of Surgery, Gundersen Health System, LaCrosse, Wisconsin
| | - Christy M Dunst
- Gastrointestinal and Minimally Invasive Surgery Division, The Oregon Clinic, Portland, Oregon
| | - Thomas J Watson
- Department of Surgery, University of Rochester School of Medicine and Dentistry, Rochester, New York
| | | | | | - Kyle A Perry
- Department of Surgery, The Ohio State University, Columbus, Ohio
| | - Scott Melvin
- Department of Surgery, The Ohio State University, Columbus, Ohio
| | - Willem A Bemelman
- Department of Surgery, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - André J P M Smout
- Division of Gastroenterology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Dan Dunn
- Division of Surgery, Abbott-Northwestern Hospital, Minneapolis, Minnesota
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de Bortoli N, Martinucci I, Bertani L, Russo S, Franchi R, Furnari M, Tolone S, Bodini G, Bolognesi V, Bellini M, Savarino V, Marchi S, Savarino EV. Esophageal testing: What we have so far. World J Gastrointest Pathophysiol 2016; 7:72-85. [PMID: 26909230 PMCID: PMC4753191 DOI: 10.4291/wjgp.v7.i1.72] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Revised: 12/02/2015] [Accepted: 01/04/2016] [Indexed: 02/06/2023] Open
Abstract
Gastroesophageal reflux disease (GERD) is a common disorder of the gastrointestinal tract. In the last few decades, new technologies have evolved and have been applied to the functional study of the esophagus, allowing for the improvement of our knowledge of the pathophysiology of GERD. High-resolution manometry (HRM) permits greater understanding of the function of the esophagogastric junction and the risks associated with hiatal hernia. Moreover, HRM has been found to be more reproducible and sensitive than conventional water-perfused manometry to detect the presence of transient lower esophageal sphincter relaxation. Esophageal 24-h pH-metry with or without combined impedance is usually performed in patients with negative endoscopy and reflux symptoms who have a poor response to anti-reflux medical therapy to assess esophageal acid exposure and symptom-reflux correlations. In particular, esophageal 24-h impedance and pH monitoring can detect acid and non-acid reflux events. EndoFLIP is a recent technique poorly applied in clinical practice, although it provides a large amount of information about the esophagogastric junction. In the coming years, laryngopharyngeal symptoms could be evaluated with up and coming non-invasive or minimally invasive techniques, such as pepsin detection in saliva or pharyngeal pH-metry. Future studies are required of these techniques to evaluate their diagnostic accuracy and usefulness, although the available data are promising.
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de Bortoli N, Martinucci I, Savarino E, Franchi R, Bertani L, Russo S, Ceccarelli L, Costa F, Bellini M, Blandizzi C, Savarino V, Marchi S. Lower pH values of weakly acidic refluxes as determinants of heartburn perception in gastroesophageal reflux disease patients with normal esophageal acid exposure. Dis Esophagus 2016; 29:3-9. [PMID: 25212408 DOI: 10.1111/dote.12284] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Multichannel impedance pH monitoring has shown that weakly acidic refluxes are able to generate heartburn. However, data on the role of different pH values, ranging between 4 and 7, in the generation of them are lacking. The aim of this study was to evaluate whether different pH values of weakly acidic refluxes play a differential role in provoking reflux symptoms in endoscopy-negative patients with physiological esophageal acid exposure time and positive symptom index and symptom association probability for weakly acidic refluxes. One hundred and forty-three consecutive patients with gastroesophageal reflux disease, nonresponders to proton pump inhibitors (PPIs), were allowed a washout from PPIs before undergoing: upper endoscopy, esophageal manometry, and multichannel impedance pH monitoring. In patients with both symptom index and symptom association probability positive for weakly acidic reflux, each weakly acidic reflux was evaluated considering exact pH value, extension, physical characteristics, and correlation with heartburn. Forty-five patients with normal acid exposure time and positive symptom association probability for weakly acidic reflux were identified. The number of refluxes not heartburn related was higher than those heartburn related. In all distal and proximal liquid refluxes, as well as in distal mixed refluxes, the mean pH value of reflux events associated with heartburn was significantly lower than that not associated. This condition was not confirmed for proximal mixed refluxes. Overall, a low pH of weakly acidic reflux represents a determinant factor in provoking heartburn. This observation contributes to better understand the pathophysiology of symptoms generated by weakly acidic refluxes, paving the way toward the search for different therapeutic approaches to this peculiar condition of esophageal hypersensitivity.
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Affiliation(s)
- N de Bortoli
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - I Martinucci
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - E Savarino
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - R Franchi
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - L Bertani
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - S Russo
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - L Ceccarelli
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - F Costa
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - M Bellini
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - C Blandizzi
- Division of Pharmacology and Chemotherapy, Department of Internal Medicine, University of Pisa, Pisa, Italy
| | - V Savarino
- Division of Gastroenterology, Department of Internal Medicine DIMI, University of Genova, Genoa, Italy
| | - S Marchi
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
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10
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de Bortoli N, Martinucci I, Savarino EV, Frazzoni M, Tutuian R, Tolone S, Piaggi P, Furnari M, Russo S, Bertani L, Macchia L, Savarino V, Marchi S. Manually calculated oesophageal bolus clearance time increases in parallel with reflux severity at impedance-pH monitoring. Dig Liver Dis 2015; 47:1027-32. [PMID: 26362613 DOI: 10.1016/j.dld.2015.08.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 08/05/2015] [Accepted: 08/15/2015] [Indexed: 12/11/2022]
Abstract
BACKGROUND Oesophageal clearance has been scarcely studied. AIMS Oesophageal clearance in endoscopy-negative heartburn was assessed to detect differences in bolus clearance time among patients sub-grouped according to impedance-pH findings. METHODS In 118 consecutive endoscopy-negative heartburn patients impedance-pH monitoring was performed off-therapy. Acid exposure time, number of refluxes, baseline impedance, post-reflux swallow-induced peristaltic wave index and both automated and manual bolus clearance time were calculated. Patients were sub-grouped into pH/impedance positive (abnormal acid exposure and/or number of refluxes) and pH/impedance negative (normal acid exposure and number of refluxes), the former further subdivided on the basis of abnormal/normal acid exposure time (pH+/-) and abnormal/normal number of refluxes (impedance+/-). RESULTS Poor correlation (r=0.35) between automated and manual bolus clearance time was found. Manual bolus clearance time progressively decreased from pH+/impedance+ (42.6s), pH+/impedance- (27.1s), pH-/impedance+ (17.8s) to pH-/impedance- (10.8s). There was an inverse correlation between manual bolus clearance time and both baseline impedance and post-reflux swallow-induced peristaltic wave index, and a direct correlation between manual bolus clearance and acid exposure time. A manual bolus clearance time value of 14.8s had an accuracy of 93% to differentiate pH/impedance positive from pH/impedance negative patients. CONCLUSIONS When manually measured, bolus clearance time reflects reflux severity, confirming the pathophysiological relevance of oesophageal clearance in reflux disease.
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Affiliation(s)
- Nicola de Bortoli
- Division of Gastroenterology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy.
| | - Irene Martinucci
- Division of Gastroenterology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Edoardo V Savarino
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - Marzio Frazzoni
- Digestive Pathophysiology Unit, Baggiovara Hospital, Modena, Italy
| | - Radu Tutuian
- Gastroenterology Unit, University Hospital of Bern, Switzerland
| | - Salvatore Tolone
- Division of Surgery, Department of Surgery, Second University of Naples, Naples, Italy
| | - Paolo Piaggi
- Obesity Research Center, Department of Clinical and Experimental Medicine, University of Pisa, Italy
| | - Manuele Furnari
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Salvatore Russo
- Division of Gastroenterology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Lorenzo Bertani
- Division of Gastroenterology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Lorenzo Macchia
- Gastroenterology Unit, University Hospital of Bern, Switzerland
| | - Vincenzo Savarino
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Santino Marchi
- Division of Gastroenterology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
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Boeckxstaens G, El-Serag HB, Smout AJPM, Kahrilas PJ. Republished: symptomatic reflux disease: the present, the past and the future. Postgrad Med J 2015; 91:46-54. [PMID: 25583739 PMCID: PMC4316838 DOI: 10.1136/postgradmedj-2013-306393rep] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The worldwide incidence of GORD and its complications is increasing along with the exponentially increasing problem of obesity. Of particular concern is the relationship between central adiposity and GORD complications, including oesophageal adenocarcinoma. Driven by progressive insight into the epidemiology and pathophysiology of GORD, the earlier belief that increased gastroesophageal reflux mainly results from one dominant mechanism has been replaced by acceptance that GORD is multifactorial. Instigating factors, such as obesity, age, genetics, pregnancy and trauma may all contribute to mechanical impairment of the oesophagogastric junction resulting in pathological reflux and accompanying syndromes. Progression of the disease by exacerbating and perpetuating factors such as obesity, neuromuscular dysfunction and oesophageal fibrosis ultimately lead to development of an overt hiatal hernia. The latter is now accepted as a central player, impacting on most mechanisms underlying gastroesophageal reflux (low sphincter pressure, transient lower oesophageal sphincter relaxation, oesophageal clearance and acid pocket position), explaining its association with more severe disease and mucosal damage. Since the introduction of proton pump inhibitors (PPI), clinical management of GORD has markedly changed, shifting the therapeutic challenge from mucosal healing to reduction of PPI-resistant symptoms. In parallel, it became clear that reflux symptoms may result from weakly acidic or non-acid reflux, insight that has triggered the search for new compounds or minimally invasive procedures to reduce all types of reflux. In summary, our view on GORD has evolved enormously compared to that of the past, and without doubt will impact on how to deal with GORD in the future.
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Affiliation(s)
- Guy Boeckxstaens
- Department of Gastroenterology, Translational Research Center for Gastrointestinal Disorders (TARGID), University Hospital Leuven, KU Leuven, Leuven, Belgium
| | - Hashem B El-Serag
- Section of Gastroenterology and Hepatology, Baylor College of Medicine, Houston, Texas, USA
| | - André J P M Smout
- Department of Gastroenterology and Hepatology, Academic Medical Centre, Amsterdam, The Netherlands
| | - Peter J Kahrilas
- Division of Gastroenterology and Hepatology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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12
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Cook MB, Corley DA, Murray LJ, Liao LM, Kamangar F, Ye W, Gammon MD, Risch HA, Casson AG, Freedman ND, Chow WH, Wu AH, Bernstein L, Nyrén O, Pandeya N, Whiteman DC, Vaughan TL. Gastroesophageal reflux in relation to adenocarcinomas of the esophagus: a pooled analysis from the Barrett's and Esophageal Adenocarcinoma Consortium (BEACON). PLoS One 2014; 9:e103508. [PMID: 25075959 PMCID: PMC4116205 DOI: 10.1371/journal.pone.0103508] [Citation(s) in RCA: 111] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 06/30/2014] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Previous studies have evidenced an association between gastroesophageal reflux and esophageal adenocarcinoma (EA). It is unknown to what extent these associations vary by population, age, sex, body mass index, and cigarette smoking, or whether duration and frequency of symptoms interact in predicting risk. The Barrett's and Esophageal Adenocarcinoma Consortium (BEACON) allowed an in-depth assessment of these issues. METHODS Detailed information on heartburn and regurgitation symptoms and covariates were available from five BEACON case-control studies of EA and esophagogastric junction adenocarcinoma (EGJA). We conducted single-study multivariable logistic regressions followed by random-effects meta-analysis. Stratified analyses, meta-regressions, and sensitivity analyses were also conducted. RESULTS Five studies provided 1,128 EA cases, 1,229 EGJA cases, and 4,057 controls for analysis. All summary estimates indicated positive, significant associations between heartburn/regurgitation symptoms and EA. Increasing heartburn duration was associated with increasing EA risk; odds ratios were 2.80, 3.85, and 6.24 for symptom durations of <10 years, 10 to <20 years, and ≥20 years. Associations with EGJA were slighter weaker, but still statistically significant for those with the highest exposure. Both frequency and duration of heartburn/regurgitation symptoms were independently associated with higher risk. We observed similar strengths of associations when stratified by age, sex, cigarette smoking, and body mass index. CONCLUSIONS This analysis indicates that the association between heartburn/regurgitation symptoms and EA is strong, increases with increased duration and/or frequency, and is consistent across major risk factors. Weaker associations for EGJA suggest that this cancer site has a dissimilar pathogenesis or represents a mixed population of patients.
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Affiliation(s)
- Michael B. Cook
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, Maryland, United States of America
- * E-mail:
| | - Douglas A. Corley
- Division of Research and Oakland Medical Center, Kaiser Permanente, Northern California, Oakland, California, United States of America
| | - Liam J. Murray
- Centre for Public Health, Queen’s University, Belfast, Northern Ireland
| | - Linda M. Liao
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, Maryland, United States of America
| | - Farin Kamangar
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, Maryland, United States of America
- Department of Public Health Analysis, School of Community Health and Policy, Morgan State University, Baltimore, Maryland, United States of America
| | - Weimin Ye
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Marilie D. Gammon
- Department of Epidemiology, University of North Carolina School of Public Health, Chapel Hill, North Carolina, United States of America
| | - Harvey A. Risch
- Yale University School of Medicine, Department of Epidemiology and Public Health, New Haven, Connecticut, United States of America
| | - Alan G. Casson
- Department of Surgery, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Neal D. Freedman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, Maryland, United States of America
| | - Wong-Ho Chow
- The University of Texas MD Anderson Cancer Center, Department of Epidemiology, Houston, Texas, United States of America
| | - Anna H. Wu
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California/Norris Comprehensive Cancer Center, Los Angeles, California, United States of America
| | - Leslie Bernstein
- Department of Population Sciences, Beckman Research Institute and City of Hope Comprehensive Cancer Center, Duarte, California, United States of America
| | - Olof Nyrén
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Nirmala Pandeya
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | | | - Thomas L. Vaughan
- Program in Epidemiology, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
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Abstract
The worldwide incidence of GORD and its complications is increasing along with the exponentially increasing problem of obesity. Of particular concern is the relationship between central adiposity and GORD complications, including oesophageal adenocarcinoma. Driven by progressive insight into the epidemiology and pathophysiology of GORD, the earlier belief that increased gastroesophageal reflux mainly results from one dominant mechanism has been replaced by acceptance that GORD is multifactorial. Instigating factors, such as obesity, age, genetics, pregnancy and trauma may all contribute to mechanical impairment of the oesophagogastric junction resulting in pathological reflux and accompanying syndromes. Progression of the disease by exacerbating and perpetuating factors such as obesity, neuromuscular dysfunction and oesophageal fibrosis ultimately lead to development of an overt hiatal hernia. The latter is now accepted as a central player, impacting on most mechanisms underlying gastroesophageal reflux (low sphincter pressure, transient lower oesophageal sphincter relaxation, oesophageal clearance and acid pocket position), explaining its association with more severe disease and mucosal damage. Since the introduction of proton pump inhibitors (PPI), clinical management of GORD has markedly changed, shifting the therapeutic challenge from mucosal healing to reduction of PPI-resistant symptoms. In parallel, it became clear that reflux symptoms may result from weakly acidic or non-acid reflux, insight that has triggered the search for new compounds or minimally invasive procedures to reduce all types of reflux. In summary, our view on GORD has evolved enormously compared to that of the past, and without doubt will impact on how to deal with GORD in the future.
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Affiliation(s)
- Guy Boeckxstaens
- Department of Gastroenterology, Translational Research Center for Gastrointestinal Disorders (TARGID), University Hospital Leuven, KU Leuven, Leuven, Belgium
| | - Hashem B El-Serag
- Section of Gastroenterology and Hepatology, Baylor College of Medicine, Houston, Texas, USA
| | - André J P M Smout
- Department of Gastroenterology and Hepatology, Academic Medical Centre, Amsterdam, The Netherlands
| | - Peter J Kahrilas
- Division of Gastroenterology and Hepatology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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Martinucci I, de Bortoli N, Savarino E, Piaggi P, Bellini M, Antonelli A, Savarino V, Frazzoni M, Marchi S. Esophageal baseline impedance levels in patients with pathophysiological characteristics of functional heartburn. Neurogastroenterol Motil 2014; 26:546-55. [PMID: 24433456 DOI: 10.1111/nmo.12299] [Citation(s) in RCA: 155] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Accepted: 12/06/2013] [Indexed: 12/12/2022]
Abstract
BACKGROUND Recently, it has been suggested that low esophageal basal impedance may reflect impaired mucosal integrity and increased acid sensitivity. We aimed to compare baseline impedance levels in patients with heartburn and pathophysiological characteristics related to functional heartburn (FH) divided into two groups on the basis of symptom relief after proton pump inhibitors (PPIs). METHODS Patients with heartburn and negative endoscopy were treated with esomeprazole or pantoprazole 40 mg daily for 8 weeks. According to MII-pH (off therapy) analysis, patients with normal acid exposure time (AET), normal reflux number, and lack of association between symptoms and refluxes were selected; of whom 30 patients with a symptom relief higher than 50% after PPIs composed Group A, and 30 patients, matched for sex and age, without symptom relief composed Group B. A group of 20 healthy volunteers (HVs) was enrolled. For each patient and HV, we evaluated the baseline impedance levels at channel 3, during the overnight rest, at three different times. KEY RESULTS Group A (vs Group B) showed an increase in the following parameters: mean AET (1.4 ± 0.8% vs 0.5 ± 0.6%), mean reflux number (30.4 ± 8.7 vs 24 ± 6.9), proximal reflux number (11.1 ± 5.2 vs 8.2 ± 3.6), acid reflux number (17.9 ± 6.1 vs 10.7 ± 6.9). Baseline impedance levels were lower in Group A than in Group B and in HVs (p < 0.001). CONCLUSIONS & INFERENCES Evaluating baseline impedance levels in patients with heartburn and normal AET could achieve a better understanding of pathophysiology in reflux disease patients, and could improve the distinction between FH and hypersensitive esophagus.
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Affiliation(s)
- I Martinucci
- Division of Gastroenterology, University of Pisa, Pisa, Italy
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15
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Abstract
Gastroesophageal reflux disease, especially when refractory to standard therapy, remains a significant clinical problem. Although symptom pathogenesis in erosive reflux disease is relatively easy to understand, it is less clear how exposure of the macroscopically normal mucosa in nonerosive reflux disease (NERD) is able to cause heartburn. Over recent years it has become apparent that there may be microscopic and functional defects in the esophageal epithelial barrier in NERD, a so-called impairment of esophageal mucosal integrity. This can be expressed in morphologic or in functional terms. Morphologically the epithelium in NERD displays dilated intercellular spaces, which may represent a failed epithelial barrier, probably due to disruption of cell apical junctional complexes. Functionally, the mucosa in NERD displays more permeability to ions and small molecules than that of control subjects. Both morphologic and functional changes can be induced by exposure to refluxate-like solutions in vitro and in vivo. This article summarizes the evidence for impairment of esophageal mucosal integrity, and discusses its possible role in disease pathogenesis.
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16
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Estores D, Velanovich V. Barrett esophagus: epidemiology, pathogenesis, diagnosis, and management. Curr Probl Surg 2013; 50:192-226. [PMID: 23601575 DOI: 10.1067/j.cpsurg.2013.01.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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17
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Weijenborg PW, Cremonini F, Smout AJPM, Bredenoord AJ. Response to letter ‘It is time to plan clinical trials on true NERD patients’. Neurogastroenterol Motil 2012; 24:887-887. [DOI: 10.1111/j.1365-2982.2012.01967.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
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18
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Winberg H, Lindblad M, Lagergren J, Dahlstrand H. Risk factors and chemoprevention in Barrett's esophagus--an update. Scand J Gastroenterol 2012; 47:397-406. [PMID: 22428928 DOI: 10.3109/00365521.2012.667145] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Barrett's esophagus (BO) is a precursor of esophageal adenocarcinoma (OAC), a cancer with a poor prognosis and an increasing incidence. Hence there is an interest in mapping causal factors underlying BO and finding strategies to reduce the risk of dysplasia progression in patients with BO. Here we review current knowledge on established as well as less risk factors for the development of BO. Additionally, we summarize today's status on the use of chemoprevention aiming to reduce the risk of cancer progression in BO patients. METHODS We searched Medline and the Cochrane Library using the MeSH terms "Barrett's esophagus" and "Barrett esophagus," both alone and combined with the terms "risk factor," "aetiology," "diet," or "prevention." Focus was on original contributions, systematic reviews, and meta-analyses. RESULTS Established risk factors for the development of BO include gastro-esophageal reflux, obesity, male gender, Caucasian ethnicity, and increasing age. Smoking might increase the risk of BO, while aspirin/NSAIDs, Helicobacter pylori infection, and specific "healthy" dietary factors may lower the risk. The potential value of using chemoprevention with proton pump inhibitors, aspirin/NSAIDs, or statins is still uncertain. CONCLUSIONS There is today a substantial knowledge of risk factors of BO. Certain diet may be protective of BO, albeit yet to be proven. The efficiency of chemoprevention in BO is currently addressed further in randomized clinical trials.
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Affiliation(s)
- Hanna Winberg
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Upper Gastrointestinal Research (UGIR), Stockholm, Sweden
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Trinick R, Johnston N, Dalzell AM, McNamara PS. Reflux aspiration in children with neurodisability--a significant problem, but can we measure it? J Pediatr Surg 2012; 47:291-8. [PMID: 22325378 DOI: 10.1016/j.jpedsurg.2011.11.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Accepted: 11/10/2011] [Indexed: 02/07/2023]
Abstract
Recurrent respiratory problems are common in children with severe neurodisability, and respiratory deterioration is a leading cause of premature death in this group. Although the etiology is multifactorial, recurrent pulmonary aspiration is thought to play a significant role. Gastroesophageal reflux is known to be common, as is oral-motor discoordination. Differentiating direct aspiration of food and saliva and gastric reflux aspiration is difficult and presents a challenge in managing patients and assessing their suitability for surgical antireflux procedures. This is particularly the case when children present with predominantly respiratory symptoms, where there may be direct aspiration, reflux aspiration, neither, or both. A clinical biomarker to identify and quantify reflux aspiration would therefore be useful in surgical assessment and may also be applicable as an outcome measure for clinical trials of antireflux surgery. In this review, we discuss the evidence base behind existing and potentially novel biomarkers of aspiration in bronchoalveolar lavage fluid. We highlight the limitations of the lipid-laden macrophage index, particularly with regard to its specificity and interrater/intrarater reliability. We discuss the laboratory methods available to measure promising new biomarkers (pepsin and bile acids) and highlight their potential advantages and disadvantages. Finally, to understand how aspiration causes clinical signs and symptoms in our patients, we need to study the effect of aspirated substances on the lung, and here we review the available in vivo and in vitro literature.
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Affiliation(s)
- Ruth Trinick
- Department of Women's and Children's Health, Institute of Translational Medicine, University of Liverpool, Liverpool, UK
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Pauwels A, Blondeau K, Mertens V, Farre R, Verbeke K, Dupont LJ, Sifrim D. Gastric emptying and different types of reflux in adult patients with cystic fibrosis. Aliment Pharmacol Ther 2011; 34:799-807. [PMID: 21793864 DOI: 10.1111/j.1365-2036.2011.04786.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Increased gastro-oesophageal reflux (GER) is common in patients with cystic fibrosis (CF). Previous studies showed delayed gastric emptying (GE) and a high prevalence of bile acids in saliva suggesting duodenogastro-oesophageal reflux (DGER). AIM To assess different types of reflux (acid, weakly acidic and bile) and their relationship with rate of GE in adult CF patients. METHODS Gastric emptying was assessed in 33 CF patients using breath tests, reflux was monitored in 42 patients using impedance-pH-metry and 14 CF patients underwent combined impedance-pH-Bilitec monitoring. RESULTS Delayed GE was found in 33%, increased GER (predominantly acid) in 67% and pathological DGER in 35% of the CF patients. There was a significant correlation between oesophageal bile and acid exposure (P < 0.0001, r = 0.85). Patients with increased DGER had a higher proximal extent of reflux compared to those without DGER [17 (9-35) vs. 5 (1-12), P = 0.04]. There was no correlation between GE and reflux parameters, however, in a subgroup of 10 patients studied by impedance-pH-Bilitec and GE, there was a strong correlation between GE rate and bile exposure (P = 0.005, r = 0.83). CONCLUSIONS Delayed gastric emptying is present in 1/3 of patients with cystic fibrosis. There is a subgroup of these patients with both delayed gastric emptying and increased acidic duodenogastro-oesophageal reflux with high proximal extent and risk of aspiration. Controlled studies should be performed to evaluate the effect of prokinetics or antireflux surgery on the clinical cystic fibrosis evolution in these patients.
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Affiliation(s)
- A Pauwels
- Translational Research Center for Gastrointestinal Disorders, University of Leuven, Leuven, Belgium
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Fornari F, Blondeau K, Mertens V, Tack J, Sifrim D. Nocturnal gastroesophageal reflux revisited by impedance-pH monitoring. J Neurogastroenterol Motil 2011; 17:148-57. [PMID: 21602991 PMCID: PMC3093006 DOI: 10.5056/jnm.2011.17.2.148] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2010] [Revised: 01/05/2011] [Accepted: 01/13/2011] [Indexed: 12/11/2022] Open
Abstract
Background/Aims Impedance-pH monitoring allows detailed characterization of gastroesophageal reflux and esophageal activity associated with reflux. We assessed the characteristics of nocturnal reflux and esophageal activity preceding and following reflux. Methods Impedance-pH tracings from 11 healthy subjects and 76 patients with gastroesophageal reflux disease off acid-suppressive therapy were analyzed. Characteristics of nocturnal supine reflux, time distribution and esophageal activity seen on impedance at 2 minute intervals preceding and following reflux were described. Results Patients had more nocturnal reflux events than healthy subjects (8 [4-12] vs 2 [1-5], P = 0.002), with lower proportion of weakly acidic reflux (57% [35-78] vs 80% [60-100], P = 0.044). Nocturnal reflux was mainly liquid (80%) and reached the proximal esophagus more often in patients (6% vs 0%, P = 0.047). Acid reflux predominated in the first 2 hours (66%) and weakly acidic reflux in the last 3 hours (70%) of the night. Most nocturnal reflux was preceded by aboral flows and cleared by short lasting volume clearance. In patients, prolonged chemical clearance was associated with less esophageal activity. Conclusions Nocturnal weakly acidic reflux is as common as acid reflux in patients with gastroesophageal reflux disease, and predominates later in the night. Impedance-pH can predict prolonged chemical clearance after nocturnal acid reflux.
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Affiliation(s)
- Fernando Fornari
- Center for Gastroenterological Research, Catholic University of Leuven, Belgium.
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