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Ilia S, Monica V, Daniel S. Mean nocturnal baseline impedance and endoscopic mucosal impedance measurements in patients with eosinophilic esophagitis: a new tool for follow up and management? Updates Surg 2023; 75:389-393. [PMID: 35840790 PMCID: PMC9852170 DOI: 10.1007/s13304-022-01331-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 07/05/2022] [Indexed: 01/24/2023]
Abstract
Eosinophilic esophagitis (EoE) is the second most common cause of chronic esophageal inflammation after GERD, with increasing incidence and prevalence across all age groups. Since current diagnosis and follow up of EoE require endoscopy with biopsies, there is an increased interest in non or less invasive tests for its diagnosis and follow up. Baseline mucosal impedance measurement allows evaluation of mucosal barrier properties and is widely accepted as an adjunct method in GERD diagnosis. As EoE is associated with increased mucosal permeability, the use of baseline impedance to evaluate mucosal integrity has been investigated in several studies. It was found that baseline mucosal impedance, measured either during 24 h reflux monitoring or during endoscopy, was significantly lower in all parts of the esophagus in EoE patients. Impedance measurement correlated with eosinophil counts on biopsies, offering a tool to monitor treatment response. Additionally, baseline impedance patterns differed between those responding to proton pump inhibitor (PPI) treatment and those resistant to PPI, potentially allowing to tailor future treatment to the individual patient. In summary, baseline impedance measurement offers a potential tool for diagnosis and follow up in EoE. Its exact place in EoE treatment is yet to be determined and requires further future studies.
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Affiliation(s)
- Sergeev Ilia
- Barts and the London School of Medicine and Dentistry, Wingate Institute of Neurogastroenterology, Queen Mary University of London, London, UK
| | - Velosa Monica
- Barts and the London School of Medicine and Dentistry, Wingate Institute of Neurogastroenterology, Queen Mary University of London, London, UK
| | - Sifrim Daniel
- Barts and the London School of Medicine and Dentistry, Wingate Institute of Neurogastroenterology, Queen Mary University of London, London, UK
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Abstract
BACKGROUND AND AIMS Eosinophilic esophagitis (EoE) is a chronic inflammatory disorder that requires repeat endoscopic evaluation(s) to assess response to treatment. This results in high health care costs and a procedural burden in affected children. Noninvasive alternate modalities to reassess disease activity have not been established. Low baseline impedance measured by multichannel pH impedance (pH-MII) is seen in adults with EoE, in keeping with poor mucosal integrity. We aimed to investigate the relationship between esophageal eosinophilia (or severity of eosinophilic infiltration) and baseline impedance in children with EoE. METHODS We retrospectively identified 15 children diagnosed with EoE at our institution who had undergone pH-MII within 30 days of 3-level esophageal biopsy. This group were not concurrently prescribed proton pump inhibitors and had negligible reflux parameters on pH-MII. Average impedance baseline was calculated upper, mid, and lower esophageal segments via baseline impedance automated analysis (RIAA) and mean nocturnal baseline impedance (MNBI) methods. Eosinophil count data for upper, mid, and lower esophageal segments in the EoE group was collated. RESULTS A significantly lower baseline impedance was seen across the esophageal length in children with EoE, compared with 30 controls who had no differences in age or reflux burden on nonparametric testing. A relationship between baseline impedance and eosinophil number at corresponding esophageal segments was not established. CONCLUSIONS Baseline impedance may be an important, less invasive adjunct in clinical practice to monitor treatment response in children with EoE. Larger prospective cohort studies should delineate optimally predictive baseline impedance thresholds for active and inactive disease.
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Rosado-Arias Y, Toro-Monjaraz EM, Cervantes-Bustamante R, Zarate-Mondragon F, Cadena-Leon J, Ignorosa-Arellano K, Loredo-Mayer A, Ramírez-Mayans J. Low Mean Nocturnal Baseline Impedance is Associated With a Pathological Acid Exposure Time in Children. J Pediatr Gastroenterol Nutr 2022; 74:215-220. [PMID: 34694265 DOI: 10.1097/mpg.0000000000003331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
BACKGROUND The baseline impedance (BI) and the mean nocturnal baseline impedance (MNBI) serve as markers of mucosal integrity in patients with pathologic acid exposure time (AET). This work aims to investigate the association between the BI and MNBI with the AET in children. METHODOLOGY A retrospective study was performed in children ≤18 years old with suspicion of gastroesophageal reflux disease who underwent both endoscopy and pH-impedance monitoring (pH-MII). Esophagitis was graded according to the Los Angeles classification. The pathological AET was determined depending on the age (≥5% in patients >1 year and ≥10% in those ages ≤1 year). For the BI, 60 s measurements were taken every 4 h, and for the MNBI, 3 10 min measurements were taken between 1.00 and 3:00 am; then, they were averaged. The means of BI and MNBI were compared with each other, with the AET, and other variables. RESULTS Sixty-eight patients were included, 25% of patients presented pathological AET. The mean of the MNBI was higher than BI in channels 6 (2195 vs 1997 Ω, P = 0.011) and 5 (2393 vs 2228 Ω, P = 0.013). BI and MNBI at channel 6 were lower in patients with pathological AET than in those with normal AET (1573 vs 2138 Ω, P = 0.007) and (1592 vs 2396 Ω, P = 0.004), respectively. CONCLUSIONS Children with pathological AET had lower impedance values than those with normal AET. BI and MNBI measurements should be part of the routine MII-pH assessment in children.
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Affiliation(s)
- Yolainis Rosado-Arias
- Departement of Gastroenterology and Nutrition Department, at Instituto Nacional de Pediatria, Mexico, Mexico
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Advances in the diagnosis of GERD. ROMANIAN JOURNAL OF INTERNAL MEDICINE = REVUE ROUMAINE DE MÉDECINE INTERNE 2021; 59:3-9. [PMID: 33010143 DOI: 10.2478/rjim-2020-0027] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Indexed: 12/22/2022]
Abstract
Gastroesophageal reflux disease (GERD) is considered one of the most frequent chronic gastrointestinal diseases globally with high costs due to treatment and investigations.First line therapy is with proton pump inhibitors, those who do not respond to initial treatment usually require further investigations such as upper gastrointestinal endoscopy or ambulatory 24-hours esophageal pH monitoring. The total time of exposure to acid and the DeMeester score represent the most useful parameters associated with conventional pH-metry, because they can identify gastroesophageal reflux disease.Although pH-metry is considered the gold standard for the evaluation of gastroesophageal reflux disease, new impedance-based parameters have been introduced in recent years with the role of increasing the accuracy of diagnosing gastroesophageal reflux disease and characterizing the type of reflux. The development of multichannel intraluminal pH-impedance has improved the ability to detect and quantify gastroesophageal reflux. New parameters such as post-reflux swallowing peristaltic wave (PSPW) index and the mean nocturnal basal impedance (MNBI) have recently been introduced to assess GERD phenotypes more accurately. This review evaluates current GERD diagnotic tools while also taking a brief look at newer diagnostic parameters like PSPW and MNBI.
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Saracco M, Savarino V, Bodini G, Saracco GM, Pellicano R. Gastroesophageal reflux disease: key messages for clinicians. Minerva Gastroenterol (Torino) 2020; 67:390-403. [PMID: 33103406 DOI: 10.23736/s2724-5985.20.02783-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Gastroesophageal reflux disease (GERD) is a chronic common disorder for which patients often refer to specialists. In the last decades, numerous studies helped to clarify the pathophysiology and the natural history of this disease. Currently, in the clinical setting, GERD is defined by the presence of symptoms that, when endoscopic investigation is required, permit to distinguish between cases with or without associated esophageal mucosal injuries. These conditions are called erosive reflux disease and non-erosive reflux disease (NERD), respectively. The latter is the most common manifestation of GERD. Symptoms are defined typical, as heartburn and regurgitation, and atypical (also called extra-esophageal), as coughing and/or wheezing, hoarseness, sore throat, otitis media, and dental manifestations. In this context, it is crucial for clinicians to investigate the presence of features of suspected malignancy, as unexplained weight loss, anemia, dysphagia, persistent vomiting, familiar history of cancer, long history of GERD, and beginning of GERD symptoms after the age of 50 years. The presence of these risk factors should induce to perform an endoscopic examination. Particular attention should be given to functional conditions that can mimic GERD, such as functional heartburn and hypersensitive esophagus as well as, more rarely, eosinophilic esophagitis. The former ones have different pathophysiology and this explains the frequent non-response to proton pump inhibitor drugs. This narrative review provides to clinicians a useful and practical overview of the state-of-the-art on advancements in the knowledge of GERD.
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Affiliation(s)
| | | | - Giorgia Bodini
- Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Giorgio M Saracco
- Department of Medical Sciences, University of Turin, Turin, Italy.,Unit of Gastroenterology, Molinette Hospital, Turin, Italy
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Sifrim D, Roman S, Savarino E, Bor S, Bredenoord AJ, Castell D, Cicala M, de Bortoli N, Frazzoni M, Gonlachanvit S, Iwakiri K, Kawamura O, Krarup A, Lee YY, Soon Ngiu C, Ndebia E, Patcharatraku T, Pauwels A, Pérez de la Serna J, Ramos R, Remes-Troche JM, Ribolsi M, Sammon A, Simren M, Tack J, Tutuian R, Valdovinos M, Xiao Y, Zerbib F, Gyawali CP. Normal values and regional differences in oesophageal impedance-pH metrics: a consensus analysis of impedance-pH studies from around the world. Gut 2020; 70:gutjnl-2020-322627. [PMID: 33037054 DOI: 10.1136/gutjnl-2020-322627] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/17/2020] [Accepted: 09/21/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Limitations of existing impedance-pH thresholds include small sample size of normative studies, inclusion of artefactual pH drops and incorrect identification of impedance reflux events. We aimed to obtain new impedance-pH thresholds from expert consensus analysis of tracings from a large number of healthy subjects. DESIGN Of 541 studies performed worldwide using two different systems (Diversatek, USA, and Laborie, Netherlands), 150 tracings with oesophageal diagnoses, behavioural disorders and study-related artefacts were excluded. The remainder studies were subject to two reviewer consensus analysis, in-person or through video conference, consisting of editing meals and pH drops, identification of impedance reflux and postreflux swallow-induced peristaltic wave (PSPW) using strict pre-established criteria and measurement of distal mean nocturnal baseline impedance (MNBI). RESULTS Consensus analysis was performed in 391 tracings (age 32.7 years, range 18-71, 54.2% female). Normative thresholds were significantly different between Diversatek and Laborie (total acid exposure time: 2.8% and 5%; reflux episodes: 55 and 78; MNBI at 3 cm: 1400 and 1500 ohms, at 5 cm: 1400 and 1800 ohms). Males had higher acid exposure, more reflux episodes and lower MNBI. Significant regional differences were identified, including higher PSPW scores in Western countries, and higher MNBI in Asia using Diversatek, and higher acid exposure in the Netherlands, higher MNBI in Asia and South Africa, and lower MNBI in Turkey using Laborie. CONCLUSION Normal impedance-pH monitoring thresholds have regional and system-related differences. Clinical interpretation needs to use normal thresholds valid for the system used and world region, following careful editing of the tracings.
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Affiliation(s)
- Daniel Sifrim
- Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Sabine Roman
- Digestive Physiology, Hopital E Herriot, Hospices Civils de Lyon, Université de Lyon, Lyon, France
| | - Edoardo Savarino
- Gastroenterology Unit, Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy
| | - Serhat Bor
- Ege University School of Medicine, Izmir, Turkey
| | - Albert J Bredenoord
- Department of Gastroenterology & Hepatology, Academic Medical Centre, Amsterdam, The Netherlands
| | - Donald Castell
- Medical University of South Carolina, Charleston, South Carolina, USA
| | - Michele Cicala
- Digestive Disease, Universita Campus Bio Medico, Roma, Italy
| | | | - Marzio Frazzoni
- Digestive Pathophysiology Unit, Baggiovara Hospital, Modena, Italy
| | - Sutep Gonlachanvit
- Department of Medicine, Chlalongkorn University, Bangkok, Thailand
- King Chulalongkorn Memorial Hospital, Thai Red Cross, Bangkok, Thailand
| | - Katsuhiko Iwakiri
- Department of Gaastroenterology, Nippon Medical School Chiba Hokusoh Hospital, Chiba, Japan
| | | | - Anne Krarup
- Section of Gastroenterology and Hepatology, Department of Medicine and Department of Neurogastroenterology Research, The North Danish Regional Hospital, Hjørring, Denmark
| | - Yeong Yeh Lee
- School of Medical Sciences, Universiti Sains Malaysia, Kota Bharu, Malaysia
- St George and Sutherland Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Chai Soon Ngiu
- Cardiac Vascular Sentral Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Eugene Ndebia
- Division of Medical Physiology, Walter Sisulu University, Mthatha, South Africa
| | - Tanisa Patcharatraku
- Gastropenterology, Center of Excellence in Neurogastroenterology and Motility, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Ans Pauwels
- Translational Research Center for Gastrointestinal Disorders, Katholieke Universiteit Leuven, Leuven, Belgium
| | - Julio Pérez de la Serna
- Immunology and Gastroenterology Departments, Instituto de Investigacion Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Rosa Ramos
- Hospital de Alta Complejidad El Cruce, Buenos Aires, Argentina
| | | | - Mentore Ribolsi
- Digestive Disease, Universita Campus Bio Medico, Roma, Italy
| | - Alastair Sammon
- Division of Medical Physiology, Walter Sisulu University, Mthatha, South Africa
| | - Magnus Simren
- Department of Internal Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Jan Tack
- Clinical and Experimental Medicine, University of Leuven, Leuven, Belgium
| | - Radu Tutuian
- University Clinics for Visceral Surgery and Medcine, Bern University Hospital, Bern, Switzerland
| | - Miguel Valdovinos
- Experimental Surgery, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Yinglian Xiao
- Department of Gastroenterology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Frank Zerbib
- Department of Gastroenterology, Bordeaux University Hospital, Bordeaux, France
| | - C Prakash Gyawali
- Division of Gastroenterology, Washington University School of Medicine, St. Louis, Missouri, USA
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Savarino E, Frazzoni M, Marabotto E, Zentilin P, Iovino P, Costantini M, Tolone S, Battaglia E, Cicala M, Usai-Satta P, de Bortoli N, Penagini R, Savarino V. A SIGE-SINGEM-AIGO technical review on the clinical use of esophageal reflux monitoring. Dig Liver Dis 2020; 52:966-980. [PMID: 32513632 DOI: 10.1016/j.dld.2020.04.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 04/28/2020] [Indexed: 02/07/2023]
Abstract
Patients with esophageal symptoms potentially associated with gastroesophageal reflux disease such as heartburn, regurgitation, chest pain, or cough represent one of the most frequent reasons for referral to gastroenterological evaluation. The utility of esophageal reflux monitoring in clinical practice is: (1) to accurately define reflux burden, (2) to segregate patients according to reflux monitoring results as true GERD, reflux hypersensitivity and functional heartburn, and (3) to establish a treatment plan. With this in mind, in the last decade, investigations and technical advances, with the introduction of impedance-pH monitoring and wireless pH capsule, have enhanced our understanding and management of GERD. The following recommendations were discussed and approved after a comprehensive review of the medical literature pertaining to reflux testing techniques and their recent application. This review created under the auspices of the Società Italiana di Gastroenterologia ed Endoscopia Digestiva (SIGE), Società Italiana di Neuro-Gastro-Enterologia e Motilità (SINGEM) and Associazione Italiana Gastroenterologi ed Endoscopisti Digestivi Ospedalieri (AIGO) is intended to help clinicians in applying reflux studies in the most fruitful manner within the context of their patients with esophageal symptoms.
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Affiliation(s)
- Edoardo Savarino
- Gastrointestinal Unit, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy.
| | - Marzio Frazzoni
- Digestive Pathophysiology Unit, Baggiovara Hospital, Modena, Italy
| | - Elisa Marabotto
- Gastrointestinal Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Patrizia Zentilin
- Gastrointestinal Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Paola Iovino
- Gastroenterology Unit, University of Salerno, Salerno, Italy
| | - Mario Costantini
- Clinica Chirurgica III, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | | | - Edda Battaglia
- Gastroenterology and Endoscopy Unit, Cardinal Massaja Hospital, Asti, Italy
| | - Michele Cicala
- Unit of Digestive Diseases, Campus Bio Medico University, Rome, Italy
| | | | - Nicola de Bortoli
- Gastrointestinal Unit-Department of Translational Sciences and New Technologies in Medicine and Surgery, University of Pisa, 56124 Pisa, Italy
| | - Roberto Penagini
- Gastroenterology and Endoscopy Unit - Department of Pathophysiology and Transplantation, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico - University of Milan, Milan, Italy; Department of Pathophysiology and Transplantation, University of Milan, Italy
| | - Vincenzo Savarino
- Gastrointestinal Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy
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Wu PI, Sloan JA, Kuribayashi S, Gregersen H. Impedance in the evaluation of the esophagus. Ann N Y Acad Sci 2020; 1481:139-153. [PMID: 32557676 DOI: 10.1111/nyas.14408] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/09/2020] [Accepted: 05/14/2020] [Indexed: 12/16/2022]
Abstract
The aim of this paper is to review esophageal electrical impedance technologies and to discuss the use of these technologies for physiological measurements, diagnostics, and therapy of esophageal disease. In order to develop a better understanding of the pathophysiology of and improve the diagnosis of esophageal disorders, such as gastroesophageal reflux disease (GERD) and achalasia, several new diagnostic tests, including intraluminal impedance, esophageal mucosal impedance, and the functional luminal imaging probe, have been developed. These technologies have proven valuable for assessment of the esophagus in recent years. They provide information on esophageal flow properties, mucosal integrity, lumen shape, and distensibility in esophageal disorders, in particular for GERD and achalasia. Despite their promise and novel clinical studies, the potential of these technologies has been far from realized. New multidisciplinary approaches will contribute to our understanding and interpretation of esophageal impedance data and disease mechanisms.
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Affiliation(s)
- Peter I Wu
- Department of Gastroenterology and Hepatology, St George Hospital, University of New South Wales, Sydney, New South Wales, Australia
| | - Joshua A Sloan
- Division of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Shiko Kuribayashi
- Department of Gastroenterology and Hepatology, Gunma University Hospital, Maebashi, Japan
| | - Hans Gregersen
- GIOME, Department of Surgery, The Chinese University of Hong Kong, Hong Kong, China
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Role of Reflux in the Pathogenesis of Eosinophilic Esophagitis: Comprehensive Appraisal With Off- and On PPI Impedance-pH Monitoring. Am J Gastroenterol 2019; 114:1606-1613. [PMID: 31449157 DOI: 10.14309/ajg.0000000000000379] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Role of reflux and mechanisms of response to proton pump inhibitor (PPI) therapy in eosinophilic esophagitis (EoE) have not yet been fully elucidated. Comprehensive assessment by impedance-pH monitoring could clarify these issues. METHODS Prospective multicenter study comparing EoE patients with healthy controls and gastroesophageal reflux disease cases. Patients with EoE were evaluated off- and on PPI; responsiveness was assessed by histology. Impedance-pH appraisal included chemical clearance, assessed with the postreflux swallow-induced peristaltic wave (PSPW) index, and mucosal integrity measured with mean nocturnal baseline impedance (MNBI). RESULTS Sixty consecutive patients with EoE were compared with 60 age- and sex-matched healthy controls and 60 subjects with gastroesophageal reflux disease. The number of total refluxes was higher, while the PSPW index was lower in patients with EoE than in healthy controls. Off PPI, a lower MNBI gradient between the mid and distal esophagus distinguished 20 patients with PPI-refractory EoE from 40 patients with PPI-responsive EoE and was a predictor of PPI failure. On PPI, a lower PSPW index was the sole reflux parameter distinguishing PPI-refractory from PPI-responsive EoE; all reflux parameters improved in PPI-responsive patients, whereas the PSPW index was not modified in PPI-refractory cases and was independently associated with PPI-responsiveness. MNBI in the distal and mid esophagus improved much more in PPI-responsive than in PPI-refractory EoE. DISCUSSION Reflux plays a role in the pathogenesis of EoE, more relevant in PPI-responsive cases. Low impedance gradient between the mid and distal esophagus may be useful to predict PPI refractoriness. PPIs mainly act by improving chemical clearance, i.e., by an antireflux action supporting long-term prescription in PPI-responsive EoE.
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Comparison of mucosal impedance measurements throughout the esophagus and mucosal eosinophil counts in endoscopic biopsy specimens in eosinophilic esophagitis. Gastrointest Endosc 2019; 89:693-700.e1. [PMID: 30145316 DOI: 10.1016/j.gie.2018.08.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 08/17/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS Assessing eosinophilic esophagitis (EoE) activity from limited esophageal mucosal biopsy samples has been questioned. Here our aim was to compare mucosal impedance (MI) throughout the esophagus and eosinophil counts in endoscopic biopsy samples in EoE. METHODS We compared 20-site MI using a balloon catheter in the esophagus and eosinophils per high-power field (eos/HPF) in esophageal mucosal biopsy samples. Data are summarized as median (interquartile range) comparing control subjects and EoE using Mann-Whitney rank sum test and between endoscopic reference score and MI (minimal and average) using rank Spearman correlation. RESULTS Ten adult control patients (ages 38-70) and 23 EoE patients (ages 21-80, 18 active) were studied. The mean (range) pan-esophageal MI in control subjects was significantly higher (6435 ohms [4546-7301]) compared with EoE patients (2004 ohms [1437-2546], P < .001). In control patients 172 of 180 (95.6%) individual impedance measurements (18 per patient) were normal when compared with 126 of 432 (29.2%) measurements in EoE. No EoE patient had uniformly normal MI. MI varied widely, with 19 of 23 patients having values above and below 2300 ohms (normal) regardless of EoE activity. Correlation of maximim eos/HPF with minimum and average MI per patient was r = -.243, P = .072 and r = -.358, P = .086, respectively. Of 5 patients with inactive EoE, 3 had >50% abnormal MI segments. Correlation coefficients of the endoscopic reference score with minimum and average MI were r = -.154, P = .47 and r = -.27, P = .20, respectively. The procedure was <5 minutes without adverse events. CONCLUSIONS MI is lower in the esophagus of EoE patients compared with control subjects with poor correlation between peak esophageal eosinophil counts, EoE activity, and MI. Segmental esophageal MI provides a unique marker of esophageal dysfunction in EoE. (Clinical trial registration number: NCT02995395.).
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Arias Á, Lucendo AJ. Molecular basis and cellular mechanisms of eosinophilic esophagitis for the clinical practice. Expert Rev Gastroenterol Hepatol 2019; 13:99-117. [PMID: 30791784 DOI: 10.1080/17474124.2019.1546120] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Eosinophilic esophagitis (EoE) is a chronic, allergen-driven inflammatory esophageal disease characterized by predominantly eosinophilic inflammation leading to esophageal dysfunction. Recent efforts to understand EoE have increased our knowledge of the disease. Areas covered: Multiple cells, molecules, and genes interplay with early life environmental factors in the pathophysiology of EoE to converge in the esophageal epithelium at the center of disease pathogenesis. Epithelial cells constitute a mayor cytokine source for TSLP and Calpain-14; an impaired epithelial barrier function allowing penetration of food and microbiota-derived antigens is involved in triggering and maintaining inflammation. Eosinophil and mast cell-derived products, including TGFβ, together with IL-1β and TNFα, promote epithelial mesenchymal transition in EoE, contributing to tissue remodeling by synthetizing and depositing extracellular matrix in subepithelial layers. This article aims to provide a state-of-the-art update on the pathophysiology of EoE applied to clinical practice, and latest research and developments with potential interest to improve the diagnosis and treatment of patients with EoE are revised. Expert commentary: Preliminary approaches have provided promising results toward incorporating minimally invasive methods for patient diagnosis and monitoring in clinical practice. Early diagnosis and optimized therapies will allow for personalized medicine in EoE.
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Affiliation(s)
- Ángel Arias
- a Research Unit , Hospital General La Mancha Centro , Alcázar de San Juan , Spain.,b Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd) , Madrid , Spain
| | - Alfredo J Lucendo
- b Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd) , Madrid , Spain.,c Department of Gastroenterology , Hospital General de Tomelloso , Ciudad Real , Spain
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TGF-β1 alters esophageal epithelial barrier function by attenuation of claudin-7 in eosinophilic esophagitis. Mucosal Immunol 2018; 11:415-426. [PMID: 28832026 PMCID: PMC5825237 DOI: 10.1038/mi.2017.72] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 07/12/2017] [Indexed: 02/04/2023]
Abstract
Barrier dysfunction has been implicated in the pathophysiology of eosinophilic esophagitis (EoE). Transforming growth factor-β1 (TGF-β1), a potent pleiotropic molecule, is increased in EoE; however, no study has evaluated its influence on esophageal epithelial barrier. We hypothesized that TGF-β1 regulates barrier dysfunction in EoE. We aimed to determine the role of TGF-β1 in the epithelial barrier in models of EoE. To examine the impact of TGF-β1 on esophageal barrier, immortalized human esophageal epithelial (EPC2-hTERT) cells were exposed to TGF-β1 during the three-dimensional air-liquid interface (3D-ALI) model in vitro. TGF-β1 exposure diminished EPC2-hTERT barrier function as measured by transepithelial electrical resistance (TEER) and 3 kDa Fluorescein isothiocyanate dextran paracellular flux (FITC Flux), and hematoxylin and eosin (H&E) assessment revealed prominent cellular separation. In analysis of epithelial barrier molecules, TGF-β1 led to the specific reduction in expression of the tight-junction molecule, claudin-7 (CLDN7), and this was prevented by TGF-β-receptor I inhibitor. Short hairpin ribonucleic acid (shRNA)-mediated CLDN7 knockdown diminished epithelial barrier function, whereas CLDN7 overexpression resulted in protection from TGF-β1-mediated barrier dysfunction. In pediatric EoE biopsies CLDN7 expression was decreased and altered localization was observed with immunofluorescence analysis, and the TGF-β1 downstream transcription factor, phosphorylated SMAD2/3 (pSMAD2/3), was increased. Our data suggest that TGF-β1 participates in esophageal epithelial barrier dysfunction through CLDN7 dysregulation.
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Lee K, Furuta GT, Nguyen N. Eosinophilic Esophagitis Is an Underlying Cause for Gastrointestinal Concerns in Children. Front Pediatr 2018; 6:113. [PMID: 29780792 PMCID: PMC5946022 DOI: 10.3389/fped.2018.00113] [Citation(s) in RCA: 6] [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: 02/09/2018] [Accepted: 04/05/2018] [Indexed: 12/19/2022] Open
Abstract
Eosinophilic esophagitis (EoE) is a chronic immune antigen-mediated disorder characterized by symptoms of esophageal dysfunction in combination with dense esophageal eosinophilia. The clinical presentation of EoE can vary depending on children's age and their ability to report symptoms, therefore a high index of suspicion for EoE is required because children and teenagers may develop coping strategies around eating. The development of symptoms measurement tools in EoE assists in not only assessing symptoms, but also coping strategies children may have developed. While the diagnosis of EoE requires endoscopic evaluation with histologic assessment of esophageal mucosal biopsy samples, several emerging methods to assess and survey the esophageal mucosa have been developed. Advances in the field to better understand the natural history, clinical and molecular features of phenotypes in EoE will be important in considering novel therapeutic options and assessing outcomes.
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Affiliation(s)
- Kunsong Lee
- Gastrointestinal Eosinophilic Diseases Program, Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, United States.,Department of Pediatrics, Dankook University College of Medicine, Cheonan, South Korea
| | - Glenn T Furuta
- Gastrointestinal Eosinophilic Diseases Program, Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, United States.,Section of Pediatric Gastroenterology, Hepatology and Nutrition, Digestive Health Institute, Children's Hospital Colorado, Aurora, CO, United States
| | - Nathalie Nguyen
- Gastrointestinal Eosinophilic Diseases Program, Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, United States.,Section of Pediatric Gastroenterology, Hepatology and Nutrition, Digestive Health Institute, Children's Hospital Colorado, Aurora, CO, United States
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14
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Straumann A, Katzka DA. Diagnosis and Treatment of Eosinophilic Esophagitis. Gastroenterology 2018; 154:346-359. [PMID: 28756235 DOI: 10.1053/j.gastro.2017.05.066] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 05/16/2017] [Accepted: 05/19/2017] [Indexed: 12/12/2022]
Abstract
Eosinophilic esophagitis (EoE) is a new disease. It is caused by a T-helper type 2 cell response to food antigens in contact with the esophageal mucosa. Although no single feature defines EoE, a constellation of compatible demographic, clinical, endoscopic, and histologic findings establish the diagnosis. Children present with symptoms and endoscopic patterns characteristic of inflammation, whereas adolescents and adults have manifestations of fibrosis and gross esophageal strictures. Clinical and endoscopic scoring systems have helped to standardize diagnosis. There is controversy in EoE research over the optimal endpoint for treatment. Although the most common endpoint is a reduced number of eosinophils in biopsies, changes in symptoms and endoscopic features are becoming important targets of therapy. We should improve our understanding of EoE progression and the need for maintenance therapy, and continue development of diagnostic tools that avoid endoscopy and biopsy analyses to more easily monitor disease activity.
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Affiliation(s)
- Alex Straumann
- Swiss EoE Clinic, Praxis Römerhof, Olten, Switzerland; Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - David A Katzka
- Swiss EoE Clinic, Praxis Römerhof, Olten, Switzerland; Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota.
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15
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Clayton F, Peterson K. Eosinophilic Esophagitis: Pathophysiology and Definition. Gastrointest Endosc Clin N Am 2018; 28:1-14. [PMID: 29129294 DOI: 10.1016/j.giec.2017.07.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Eosinophilic esophagitis is an adaptive immune response to patient-specific antigens, mostly foods. Eosinophilic esophagitis is not solely IgE-mediated and is likely characterized by Th2 lymphocytes with an impaired esophageal barrier function. The key cytokines and chemokines are thymic stromal lymphopoeitin, interleukin-13, CCL26/eotaxin-3, and transforming growth factor-β, all involved in eosinophil recruitment and remodeling. Chronic food dysphagia and food impactions, the feared late complications, are related in part to dense subepithelial fibrosis, likely induced by interleukin-13 and transforming growth factor-β.
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Affiliation(s)
- Frederic Clayton
- Department of Pathology, The University of Utah, Huntsman Cancer Hospital, 1950 Circle of Hope, Room N3100, Salt Lake City, UT 84112, USA
| | - Kathryn Peterson
- Division of Gastroenterology, The University of Utah, 30 North 1900 East SOM 4R118, Salt Lake City, UT 84132, USA.
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16
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Roman S, Gyawali CP, Savarino E, Yadlapati R, Zerbib F, Wu J, Vela M, Tutuian R, Tatum R, Sifrim D, Keller J, Fox M, Pandolfino JE, Bredenoord AJ. Ambulatory reflux monitoring for diagnosis of gastro-esophageal reflux disease: Update of the Porto consensus and recommendations from an international consensus group. Neurogastroenterol Motil 2017; 29:1-15. [PMID: 28370768 DOI: 10.1111/nmo.13067] [Citation(s) in RCA: 204] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 02/20/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND An international group of experts evaluated and revised recommendations for ambulatory reflux monitoring for the diagnosis of gastro-esophageal reflux disease (GERD). METHODS Literature search was focused on indications and technical recommendations for GERD testing and phenotypes definitions. Statements were proposed and discussed during several structured meetings. KEY RESULTS Reflux testing should be performed after cessation of acid suppressive medication in patients with a low likelihood of GERD. In this setting, testing can be either catheter-based or wireless pH-monitoring or pH-impedance monitoring. In patients with a high probability of GERD (esophagitis grade C and D, histology proven Barrett's mucosa >1 cm, peptic stricture, previous positive pH monitoring) and persistent symptoms, pH-impedance monitoring should be performed on treatment. Recommendations are provided for data acquisition and analysis. Esophageal acid exposure is considered as pathological if acid exposure time (AET) is greater than 6% on pH testing. Number of reflux episodes and baseline impedance are exploratory metrics that may complement AET. Positive symptom reflux association is defined as symptom index (SI) >50% or symptom association probability (SAP) >95%. A positive symptom-reflux association in the absence of pathological AET defines hypersensitivity to reflux. CONCLUSIONS AND INFERENCES The consensus group determined that grade C or D esophagitis, peptic stricture, histology proven Barrett's mucosa >1 cm, and esophageal acid exposure greater >6% are sufficient to define pathological GERD. Further testing should be considered when none of these criteria are fulfilled.
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Affiliation(s)
- S Roman
- Digestive Physiology, Hospices Civils de Lyon and Lyon I University, Inserm U1032, LabTAU, Lyon, France
| | - C P Gyawali
- Division of Gastroenterology, Washington University School of Medicine, St. Louis, MO, USA
| | - E Savarino
- Division of Gastroenterology, Department of Surgical, Oncological and Gastroenterological Sciences, Padua, Italy
| | - R Yadlapati
- Division of Gastroenterology, Department of Medicine, Northwestern University, Chicago, IL, USA
| | - F Zerbib
- Department of Gastroenterology, Bordeaux University Hospital, and Université de Bordeaux, Bordeaux, France
| | - J Wu
- Institute of Digestive Disease, The Chinese University of Hong Kong, Hong Kong, China
| | - M Vela
- Division of Gastroenterology and Hepatology, Mayo Clinic, Scottsdale, AZ, USA
| | - R Tutuian
- Division of Gastroenterology, University Clinics for Visceral Surgery and Medicine, Bern University Hospital, Bern, Switzerland
| | - R Tatum
- Department of Surgery, University of Washington, Seattle, WA, USA
| | - D Sifrim
- Center for Digestive Diseases, Bart's and the London School and Dentistry, London, UK
| | - J Keller
- Department of Internal Medicine, Israelitic Hospital, University of Hamburg, Hamburg, Germany
| | - M Fox
- Department of Gastroenterology, Abdominal Center, St. Claraspital, Basel, Switzerland
| | - J E Pandolfino
- Division of Gastroenterology, Department of Medicine, Northwestern University, Chicago, IL, USA
| | - A J Bredenoord
- Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands
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17
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Abstract
Over the past decades eosinophilic esophagitis (EoE) has been increasingly diagnosed, and significant progress has been made in our understanding of its pathophysiology. As EoE cannot be cured yet, treatment goals are suppression of disease activity and symptoms as well as the prevention of progression to a more severe disease phenotype. Disease-modifying treatment options can be divided into dietary therapy and immunosuppressive medications, of which topical steroids have been most investigated, yet are still prescribed off-label. In this review, we will summarize recent advances in our understanding of EoE and discuss the mechanisms of action of current treatment options, with emphasis on the role of the esophageal epithelial barrier and the effects of proton-pump inhibitors in the management of patients with EoE.
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18
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Abstract
PURPOSE OF REVIEW The costs to society and accuracy of screening for esophageal cancer and other esophageal diseases with standard endoscopy are formidable. As a result, the applicability of endoscopy as a general screening tool has been challenged. RECENT FINDINGS To maintain accuracy but reduce the price of endoscopy on society, multiple adjunct or replacement technologies are being developed that are less expensive and more easily applied. These devices include image-enhancing techniques that more reliably identify dysplasia and cancer reducing the need for extensive biopsy sampling during standard endoscopy. They also include ambulatory forms for procuring esophageal imaging including smaller endoscopes and capsule endoscopy. Finally, some of the newer methods either obtain samples of esophageal tissue through bedside maneuvers not requiring endoscopy or retrieve information about mucosal inflammation and function without the need to procure esophageal tissue. There is an exciting future for esophageal diagnosis with tools that will save cost and/or provide greater accuracy and safety for some of the most common esophageal disorders.
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Affiliation(s)
- David A Katzka
- Division of Gastroenterology and Hepatology, Mayo Clinic, 200 First Ave., S.W., Rochester, MN, 55905, USA.
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19
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Marietta EV, Geno DM, Smyrk TC, Becker A, Alexander JA, Camilleri M, Murray JA, Katzka DA. Presence of intraepithelial food antigen in patients with active eosinophilic oesophagitis. Aliment Pharmacol Ther 2017; 45:427-433. [PMID: 27878833 PMCID: PMC6944330 DOI: 10.1111/apt.13877] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 10/29/2016] [Accepted: 11/03/2016] [Indexed: 12/12/2022]
Abstract
BACKGROUND Although eosinophilic oesophagitis (EoE) is putatively mediated by an abnormal response to food antigen, the oesophagus is considered relatively impermeable to large molecules. AIM To assess whether food antigens penetrate the oesophageal mucosa in patients with EoE. METHODS Anti-gliadin staining was performed in three groups: active EoE, inactive EoE and EoE patients on a low or gluten free diet. To appraise the specificity of our results, we also performed gliadin staining on six patients without oesophageal disease who were consuming gluten. The groups with EoE on gluten also underwent endoscopic infusion with gluten containing soy sauce and repeat biopsies during the endoscopy. We measured eosinophil density, dilated intercellular spaces (on a 0-4+ scale) and gliadin in oesophageal mucosa by immunofluorescence. RESULTS Patients with active EoE had significantly greater epithelial density of anti-gliadin staining when compared to inactive EoE (P < 0.0065) and gluten-free patients (P < 0.0008) at baseline and after soy infusion. Gliadin was not detected in non-EoE control patients. The distribution of gliadin was both cytoplasmic and nuclear. There was good correlation of dilated intercellular spaces grade and total gliadin staining intensity (r = 0.577, P = 0.0077). Acute oesophageal perfusion of a commercial gliadin-rich soy sauce did not lead to an increase in gliadin staining in active or inactive EoE. CONCLUSION These findings suggest, although do not prove, that antigen penetration in active eosinophilic oesophagitis might be facilitated by impairment of epithelial integrity.
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Affiliation(s)
- E V Marietta
- Departments of Medicine/Gastroenterology and Pathology, Mayo Clinic, Rochester, MN, USA
| | - D M Geno
- Departments of Medicine/Gastroenterology and Pathology, Mayo Clinic, Rochester, MN, USA
| | - T C Smyrk
- Departments of Medicine/Gastroenterology and Pathology, Mayo Clinic, Rochester, MN, USA
| | - A Becker
- Departments of Medicine/Gastroenterology and Pathology, Mayo Clinic, Rochester, MN, USA
| | - J A Alexander
- Departments of Medicine/Gastroenterology and Pathology, Mayo Clinic, Rochester, MN, USA
| | - M Camilleri
- Departments of Medicine/Gastroenterology and Pathology, Mayo Clinic, Rochester, MN, USA
| | - J A Murray
- Departments of Medicine/Gastroenterology and Pathology, Mayo Clinic, Rochester, MN, USA
| | - D A Katzka
- Departments of Medicine/Gastroenterology and Pathology, Mayo Clinic, Rochester, MN, USA
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20
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Singendonk MMJ, Benninga MA, van Wijk MP. Reflux monitoring in children. Neurogastroenterol Motil 2016; 28:1452-9. [PMID: 27682990 DOI: 10.1111/nmo.12922] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 07/18/2016] [Indexed: 12/23/2022]
Abstract
Recently, multichannel intraluminal impedance (MII) monitoring was added to the repertoire of tests to evaluate the (patho)physiology of gastroesophageal reflux (GER) in children. Its advantage above the sole monitoring of the esophageal pH lies in the ability of the detection of both acid and nonacid GER and to discern between liquid and gas GER. Currently, combined 24 h pH-MII monitoring is recommended for evaluation of gastro-esophageal reflux disease (GERD) and its relation to symptoms in infants and children, despite the lack of reference values in these age groups. There is new evidence in the current issue of this Journal supporting the role of pH-MII monitoring for the evaluation of children presenting with gastrointestinal symptoms suggestive of GERD and the prediction of the presence of reflux esophagitis. However, several issues should be taken into account when performing pH-MII clinically.
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Affiliation(s)
- M M J Singendonk
- Department of Pediatric Gastroenterology and Nutrition, Emma Children's Hospital AMC, Amsterdam, The Netherlands.
| | - M A Benninga
- Department of Pediatric Gastroenterology and Nutrition, Emma Children's Hospital AMC, Amsterdam, The Netherlands
| | - M P van Wijk
- Department of Pediatric Gastroenterology and Nutrition, Emma Children's Hospital AMC, Amsterdam, The Netherlands.,Department of Pediatric Gastroenterology, VU University Medical Centre, Amsterdam, The Netherlands
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21
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Savarino EV, Tolone S, Bartolo O, de Cassan C, Caccaro R, Galeazzi F, Nicoletti L, Salvador R, Martinato M, Costantini M, Savarino V. The GerdQ questionnaire and high resolution manometry support the hypothesis that proton pump inhibitor-responsive oesophageal eosinophilia is a GERD-related phenomenon. Aliment Pharmacol Ther 2016; 44:522-30. [PMID: 27373195 DOI: 10.1111/apt.13718] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 01/22/2016] [Accepted: 06/15/2016] [Indexed: 12/15/2022]
Abstract
BACKGROUND Little is known about the relationship between proton pump inhibitor-responsive oesophageal eosinophilia (PPI-REE), eosinophilic esophagitis (EoE) and gastro-oesophageal reflux disease (GERD). AIM To compare high resolution manometry features and symptom profiles of patients with EoE, PPI-REE and GERD. METHODS Consecutive patients diagnosed with EoE or PPI-REE according to international criteria (presence of at least one typical symptom of oesophageal dysfunction; at least 15 eosinophils per high-power field at mid/proximal oesophagus, persistence or resolution of eosinophils after an 8-week PPI trial), and a group of patients with proven GERD and oesophageal eosinophilia, prospectively completed the GerdQ questionnaire and underwent high resolution manometry. RESULTS Thirty-five patients with EoE, 17 with PPI-REE and 27 with GERD were enrolled. When compared to GERD, both EoE and PPI-REE had higher rates of dysphagia (15% vs. 94% vs. 88%, P < 0.0001), patients with EoE reported heartburn and regurgitation less frequently (26% vs. 85%, and 17% vs. 74%, respectively; P < 0.001 for each and had lower GerdQ score [1 (0-6) vs. 8 (6-12), P < 0.001] than GERD patients. There was no significant difference comparing PPI-REE and GERD patients. Patients with PPI-REE had a higher prevalence of erosive oesophagitis than patients with EoE (35% vs. 9%, P = 0.04), which was similar to that of GERD (48%, P = 0.54). Patients with EoE had a lower frequency of high resolution manometry features associated with GERD than patients with PPI-REE. There was no significant difference between PPI-REE and GERD patients. CONCLUSION GERD, as assessed by GerdQ and high resolution manometry is common in patients with PPI-REE, which may share similar pathogenic mechanisms.
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Affiliation(s)
- E V Savarino
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - S Tolone
- Division of General and Bariatric Surgery, Department of Surgery, Second University of Naples, Naples, Italy
| | - O Bartolo
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - C de Cassan
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - R Caccaro
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - F Galeazzi
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - L Nicoletti
- U.O. Clinica Chirurgica 3, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - R Salvador
- U.O. Clinica Chirurgica 3, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - M Martinato
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - M Costantini
- U.O. Clinica Chirurgica 3, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - V Savarino
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
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22
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Moawad FJ, Cheng E, Schoepfer A, Al-Haddad S, Bellizzi AM, Dawson H, El-Zimaity H, Guindi M, Penagini R, Safrooneva E, Chehade M. Eosinophilic esophagitis: current perspectives from diagnosis to management. Ann N Y Acad Sci 2016; 1380:204-217. [DOI: 10.1111/nyas.13164] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 06/01/2016] [Accepted: 06/03/2016] [Indexed: 02/06/2023]
Affiliation(s)
- Fouad J. Moawad
- Gastroenterology Service, Department of Medicine; Walter Reed National Military Medical Center; Bethesda Maryland
| | - Edaire Cheng
- Pediatric Gastroenterology, Hepatology & Nutrition Division; University of Texas Southwestern Medical Center; Dallas Texas
| | - Alain Schoepfer
- Division of Gastroenterology and Hepatology; Centre Hospitalier Universitaire; Vaudois/CHUV Lausanne Switzerland
| | - Sahar Al-Haddad
- Department of Laboratory Medicine; St. Michael's Hospital; Hamilton Ontario Canada
| | - Andrew M. Bellizzi
- Department of Pathology; University of Iowa Hospitals and Clinics, University of Iowa Carver College of Medicine; Iowa City Iowa
| | - Heather Dawson
- Institute of Pathology; University of Bern; Bern Switzerland
| | | | - Maha Guindi
- Department of Pathology and Laboratory Medicine; Cedars-Sinai Medical Center; Los Angeles California
| | - Roberto Penagini
- Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, and Department of Pathophysiology and Transplantation; Università degli Studi; Milan Italy
| | - Ekaterina Safrooneva
- Institute of Social and Preventive Medicine; University of Bern; Bern Switzerland
| | - Mirna Chehade
- Department of Pediatrics and Medicine, Mount Sinai Center for Eosinophilic Disorders; Icahn School of Medicine at Mount Sinai; New York New York
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23
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Molina-Infante J, Prados-Manzano R, Gonzalez-Cordero PL. The role of proton pump inhibitor therapy in the management of eosinophilic esophagitis. Expert Rev Clin Immunol 2016; 12:945-52. [PMID: 27097787 DOI: 10.1080/1744666x.2016.1178574] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Eosinophilic esophagitis (EoE) is a chronic esophageal disease characterized by a Th2 inflammatory response triggered by food/environmental allergens. Solid data confirm that up to half of patients with suspected EoE achieve complete remission on proton pump inhibitors (PPI) therapy. This disease phenotype is currently labelled as PPI-responsive esophageal eosinophilia (PPI-REE). Albeit initially believed to represent gastro-esophageal reflux disease (GERD), evolving evidence has underscored that PPI-REE and EoE show a significant overlap regarding clinic, endoscopic, histologic, Th2 immune-mediated inflammation and gene expression features. Moreover, PPI therapy can effectively reverse Th2 inflammation and the EoE transcriptome expression in PPI-REE patients. Therefore, EoE and PPI-REE likely represent a common allergic disorder, where PPI therapy should be considered a short- and long-term therapeutic asset, along with diet and topical steroids.
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Affiliation(s)
- Javier Molina-Infante
- a Department of Gastroenterology , Hospital San Pedro de Alcantara , Caceres , Spain
| | - Raul Prados-Manzano
- a Department of Gastroenterology , Hospital San Pedro de Alcantara , Caceres , Spain
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24
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Goyal A, Cheng E. Recent discoveries and emerging therapeutics in eosinophilic esophagitis. World J Gastrointest Pharmacol Ther 2016; 7:21-32. [PMID: 26855809 PMCID: PMC4734951 DOI: 10.4292/wjgpt.v7.i1.21] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Revised: 10/13/2015] [Accepted: 12/11/2015] [Indexed: 02/06/2023] Open
Abstract
Eosinophilic esophagitis (EoE) is an allergy-mediated disease culminating in severe eosinophilic inflammation and dysfunction of the esophagus. This chronic disorder of the esophagus causes significant morbidity, poor quality of life, and complications involving fibrosis and esophageal remodeling. Overlapping features between EoE and gastroesophageal reflux disease (GERD) pose great challenges to differentiating the two conditions, although the two disorders are not mutually exclusive. Recent findings suggest that the confounding condition proton pump inhibitor - responsive esophageal eosinophilia (PPI-REE) is likely a subset of EoE. Since PPIs have therapeutic properties that can benefit EoE, PPIs should be considered as a therapeutic option for EoE rather than a diagnostic screen to differentiate GERD, PPI-REE, and EoE. Other current treatments include dietary therapy, corticosteroids, and dilation. Immunomodulators and biologic agents might have therapeutic value, and larger trials are needed to assess efficacy and safety. Understanding the pathophysiology of EoE is critical to the development of novel therapeutics.
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25
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Martinucci I, Savarino EV, Pandolfino JE, Russo S, Bellini M, Tolone S, Tutuian R, Roman S, Furnari M, Frazzoni M, Macchia L, Savarino V, Marchi S, de Bortoli N. Vigor of peristalsis during multiple rapid swallows is inversely correlated with acid exposure time in patients with NERD. Neurogastroenterol Motil 2016; 28:243-50. [PMID: 26661383 DOI: 10.1111/nmo.12719] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 10/06/2015] [Indexed: 12/18/2022]
Abstract
BACKGROUND Multiple rapid swallowing (MRS) during high-resolution manometry (HRM) is increasingly utilized as provocative test to assess esophageal peristaltic reserve. The aim of this study was to evaluate the correlation between MRS response and impedance and pH (MII-pH) parameters in endoscopy negative heartburn (ENH) patients. METHODS We enrolled consecutive ENH patients, who underwent HRM and MII-pH study, with a selected MII-pH profile: abnormal MII-pH (pH+/MII+); normal MII-pH (pH-/MII-). HRM was performed with 10 wet swallows (WS) and one MRS. Mean distal contractile integral (DCI) during WS and MRS were calculated. MII-pH parameters including acid exposure time (AET), reflux events, baseline impedance levels (BI) and the efficacy of chemical clearance evaluated with the postreflux swallow-induced peristaltic wave (PSPW) index were measured. KEY RESULTS We analyzed 103 patients: 49 MII+/pH+ (27 male), and 54 MII-/pH- (19 male). Mean age was similar between the two groups. As expected, mean AET and number of refluxes were higher in pH+/MII+ (p < 0.05). HRM was normal in all selected patients. Mean DCI-WS was similar between two groups (p = n.s.). Mean DCI-MRS- was higher in MII-/pH- vs MII+/pH+ (p < 0.05). The increase in DCI-MRS was inversely correlated with AET (-0.699; p < 0.001) and directly correlated with BI values (0.631; p < 0.001) and PSPW index (0.626; p < 0.001). CONCLUSIONS & INFERENCES Following MRS, patients with abnormal impedance-pH test showed suboptimal contraction response as compared with those with normal impedance-pH test. Moreover, MRS response was inversely correlated with AET and directly correlated with BI values and PSPW index.
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Affiliation(s)
- I Martinucci
- Division of Gastroenterology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - E V Savarino
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - J E Pandolfino
- Gastroenterology Unit, Department of Internal Medicine, Northwest University, Chicago, IL, USA
| | - S Russo
- Division of Gastroenterology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - M Bellini
- Division of Gastroenterology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - S Tolone
- Division of Surgery, Department of Surgery, Second University of Naples, Naples, Italy
| | - R Tutuian
- Gastroenterology Unit, University Hospital of Bern, Bern, Switzerland
| | - S Roman
- Digestive Physiology, Hospices Civil de Lyon and Lyon I University, Lyon, France
| | - M Furnari
- Division of Gastroenterology, Department of Internal Medicine (DIMI), University of Genoa, Genoa, Italy
| | - M Frazzoni
- Gastroenterology Digestive Pathophysiology Unit, Baggiovara Hospital, Modena, Italy
| | - L Macchia
- Gastroenterology Unit, University Hospital of Bern, Bern, Switzerland
| | - V Savarino
- Division of Gastroenterology, Department of Internal Medicine (DIMI), University of Genoa, Genoa, Italy
| | - S Marchi
- Division of Gastroenterology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - N de Bortoli
- Division of Gastroenterology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
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Soresi S, Zeriouh M, Sabashnikov A, Mc Dermott G, Weymann A, Wippermann J, Wahlers T, Reed A, Carby M, Simon AR, Popov AF. GORD symptoms in lung transplantation: how efficient is the reflux symptom index questionnaire compared to the esophageal impedance test? Clin Transplant 2015; 30:44-51. [PMID: 26457390 DOI: 10.1111/ctr.12656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/07/2015] [Indexed: 11/30/2022]
Abstract
OBJECTIVE As Gastroesophageal reflux disease (GORD) affects long-term survival in lung transplant recipients, the aim of this observational prospective study was to analyze the efficacy of The Reflux Symptom Index Questionnaire (RSI) compared to the esophageal impedance test. METHODS Both esophageal impedance studies and RSI questionnaire were routinely performed in all patients who had completed rehabilitation following lung transplantation from June 2013 till March 2014. RSI generates a score of between zero and forty-five, taking into account any symptoms within four wk of the questionnaire. Our analysis considered RSI score cut-offs of 10 and 13 indicating significance of reflux. RESULTS Out of 84 patients, 50 (59.5%) had evidence of GORD detected by impedance studies, whereas only 33 (39.2%) and 22 (26.2%) had RSI >10 and 13, respectively. An elevated RSI was not found to be associated with positive impedance studies using a score of either 10 or 13 (p = 0.127 and p = 0.142, respectively); 32.1% (n = 27) and 40.5% (n = 34) were found to have negative RSI and positive impedance test using 10 or 13 as cut-off, respectively. CONCLUSION RSI Score is an unreliable predictor of GORD among lung transplant recipients. The authors therefore recommend the routine use of impedance testing in post-transplant patients.
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Affiliation(s)
- Simona Soresi
- Department of Lung Failure and Transplant Medicine, Royal Brompton & Harefield NHS Foundation Trust, Harefield, UK
| | - Mohamed Zeriouh
- Department of Cardiothoracic Transplantation and Mechanical Circulatory Support, Royal Brompton & Harefield NHS Foundation Trust, Harefield Hospital, Harefield, UK.,Department of Cardiothoracic Surgery, University Hospital Cologne, Cologne, Germany
| | - Anton Sabashnikov
- Department of Cardiothoracic Transplantation and Mechanical Circulatory Support, Royal Brompton & Harefield NHS Foundation Trust, Harefield Hospital, Harefield, UK.,Department of Cardiothoracic Surgery, University Hospital Cologne, Cologne, Germany
| | - Grainne Mc Dermott
- Department of Lung Failure and Transplant Medicine, Royal Brompton & Harefield NHS Foundation Trust, Harefield, UK
| | - Alexander Weymann
- Department of Cardiothoracic Transplantation and Mechanical Circulatory Support, Royal Brompton & Harefield NHS Foundation Trust, Harefield Hospital, Harefield, UK
| | - Jens Wippermann
- Department of Cardiothoracic Surgery, University Hospital Cologne, Cologne, Germany
| | - Thorsten Wahlers
- Department of Cardiothoracic Surgery, University Hospital Cologne, Cologne, Germany
| | - Anna Reed
- Department of Lung Failure and Transplant Medicine, Royal Brompton & Harefield NHS Foundation Trust, Harefield, UK
| | - Martin Carby
- Department of Lung Failure and Transplant Medicine, Royal Brompton & Harefield NHS Foundation Trust, Harefield, UK
| | - Andre R Simon
- Department of Cardiothoracic Transplantation and Mechanical Circulatory Support, Royal Brompton & Harefield NHS Foundation Trust, Harefield Hospital, Harefield, UK
| | - Aron-Frederik Popov
- Department of Cardiothoracic Transplantation and Mechanical Circulatory Support, Royal Brompton & Harefield NHS Foundation Trust, Harefield Hospital, Harefield, UK
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Molina-Infante J, van Rhijn BD. Interactions between gastro-oesophageal reflux disease and eosinophilic oesophagitis. Best Pract Res Clin Gastroenterol 2015; 29:749-758. [PMID: 26552774 DOI: 10.1016/j.bpg.2015.06.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 06/10/2015] [Accepted: 06/18/2015] [Indexed: 01/31/2023]
Abstract
Gastro-oesophageal reflux disease (GORD) is the most common oesophageal disorder, whereas eosinophilic oesophagitis (EoE) is an emerging disease unresponsive to PPI therapy. Updated guidelines in 2011 described proton pump inhibitor-responsive esophageal eosinophilia (PPI-REE), a novel phenotype in EoE patients who were responsive to PPIs. This article aims to update the complex interplay between GORD, EoE and PPIs. Oesophageal mucosal integrity is diffusely impaired in EoE and PPI-REE patients. PPI-REE might occur with either normal or pathological pH monitoring. The genetic hallmark of EoE is overlapped in PPI-REE, but not in GORD. PPIs can partially restore epithelial integrity and reverse allergic inflammation gene expression in PPI-REE. Acid hypersensitivity in EoE patients may explain symptomatic but not histological response on PPIs. Unsolved issues with PPI-REE are whether oesophageal barrier impairment is the cause or the effect of oesophageal eosinophilia and whether PPIs primarily targets barrier integrity or oesophageal inflammation.
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Affiliation(s)
| | - Bram D van Rhijn
- Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands
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Histological Response to Fluticasone Propionate in Patients With Eosinophilic Esophagitis Is Associated With Improved Functional Esophageal Mucosal Integrity. Am J Gastroenterol 2015; 110:1289-97. [PMID: 26303134 DOI: 10.1038/ajg.2015.247] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Accepted: 07/02/2015] [Indexed: 12/11/2022]
Abstract
OBJECTIVES The esophageal mucosal integrity is impaired in patients with eosinophilic esophagitis (EoE). We aimed to evaluate the effect of fluticasone propionate on inflammation and functional and structural markers of esophageal mucosal barrier integrity in adult patients with EoE. METHODS In this prospective study, we included 15 EoE patients (median age (IQR), 43 (30-45) years). Patients underwent upper endoscopy before and after an 8-week course of swallowed fluticasone propionate 500 μg BID. Several parameters of esophageal mucosal barrier integrity were evaluated: esophageal electrical tissue impedance in vivo during endoscopy, transepithelial electrical resistance (TER) and transepithelial molecule flux in Ussing chambers using esophageal biopsy specimens, and intercellular spaces as a structural marker of permeability using electron microscopy. Esophageal eosinophils and mast cells were counted, and expression of inflammatory cytokines and barrier integrity proteins was investigated using qPCR. Esophageal symptoms and signs were also assessed. RESULTS Peak eosinophil and mast cell counts decreased significantly after fluticasone propionate treatment. The esophageal mucosal integrity increased substantially during treatment, as shown by increased extracellular impedance and TER (both P<0.01) and decreased transepithelial molecule flux in Ussing chambers (P<0.05). Whereas expression of genes encoding for inflammatory cytokines (IL5, IL13, eotaxin-3, periostin, TSLP) decreased after treatment, expression of genes encoding for barrier integrity proteins (filaggrin and desmoglein-1) increased. CONCLUSIONS Fluticasone propionate treatment decreases eosinophilic inflammation and improves the esophageal mucosal barrier integrity in adult EoE patients. Improvement of the mucosal barrier integrity correlates with normalization of expression of desmoglein-1 and filaggrin marker genes.
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PPI-responsive esophageal eosinophilia cannot be distinguished from eosinophilic esophagitis by endoscopic signs. Eur J Gastroenterol Hepatol 2015; 27:506-11. [PMID: 25822858 DOI: 10.1097/meg.0000000000000331] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Eosinophilic esophagitis (EoE) is a chronic antigen-mediated disease histologically characterized by eosinophil-predominant inflammation. One-third of patients respond to proton pump inhibitor (PPI) treatment; this group is identified as having PPI-responsive esophageal eosinophilia (PPI-REE). If we could predict the response to PPIs on the basis of endoscopic signs, futile treatment efforts and additional endoscopies to assess treatment response can be prevented. OBJECTIVE To determine whether endoscopic signs can distinguish PPI-REE from EoE. METHODS Endoscopic images of 30 EoE and 30 PPI-REE patients were included. Baseline characteristics were compared between groups. Complete clinical remission after a PPI trial for at least 8 weeks was classified as PPI-REE. Per patient, at least three depersonalized images were incorporated into a slideshow. These images were scored by two experienced endoscopists according to a validated classification system. RESULTS Characteristics were highly comparable between EoE and PPI-REE patients. Endoscopic signs were similar and did not enable differentiation between EoE and PPI-REE [presence of: rings (P=0.893), white exudates (P=0.209), furrows (P=0.371), edema (P=0.554), crepe paper esophagus (P=1.000), and strictures (P=0.071)]. CONCLUSION Endoscopic signs at baseline endoscopy cannot distinguish EoE from PPI-REE before a PPI trial; the demographic and clinical characteristics in both groups are similar. Endoscopic features do not enable differentiation between PPI-REE and EoE.
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30
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Cheng E. Translating new developments in eosinophilic esophagitis pathogenesis into clinical practice. ACTA ACUST UNITED AC 2015; 13:30-46. [PMID: 25598233 DOI: 10.1007/s11938-014-0041-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OPINION STATEMENT New developments in eosinophilic esophagitis (EoE) pathogenesis are shaping our current therapeutic and management strategies. EoE is a chronic allergic inflammatory disease with progression to fibrostenotic disease. The disease warrants early diagnosis and long-term maintenance therapy. The diagnosis of EoE should be based on the concept of an allergy-mediated disease with esophageal dysfunction and esophageal eosinophilia. Recent findings suggest that proton pump inhibitor (PPI)-responsive esophageal eosinophilia (PPI-REE) is likely a continuum of EoE or a similar T-helper 2 (Th2)-mediated allergic process. PPIs have therapeutic properties that can benefit both gastroesophageal reflux disease (GERD) and EoE. Therefore, PPIs should be considered not a diagnostic tool but, rather, a therapeutic option for EoE. If patients are PPI nonresponsive, then dietary therapy or steroid therapy should be considered. Dilation can be reserved as adjuvant therapy for severe fibrostenotic lesions.
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Affiliation(s)
- Edaire Cheng
- Esophageal Diseases Center, Pediatric Gastroenterology, Department of Pediatrics, Children's Medical Center and the University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA,
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31
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van Rhijn BD, Weijenborg PW, Verheij J, van den Bergh Weerman MA, Verseijden C, van den Wijngaard RMJGJ, de Jonge WJ, Smout AJPM, Bredenoord AJ. Proton pump inhibitors partially restore mucosal integrity in patients with proton pump inhibitor-responsive esophageal eosinophilia but not eosinophilic esophagitis. Clin Gastroenterol Hepatol 2014; 12:1815-23.e2. [PMID: 24657840 DOI: 10.1016/j.cgh.2014.02.037] [Citation(s) in RCA: 144] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 02/23/2014] [Accepted: 02/24/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Histologic analysis is used to distinguish patients with proton pump inhibitor-responsive eosinophilia (PPI-REE) from those with eosinophilic esophagitis (EoE). It is not clear whether these entities have different etiologies. Exposure to acid reflux can impair the integrity of the esophageal mucosal. We proposed that patients with EoE and PPI-REE might have reflux-induced esophageal mucosal damage that promotes transepithelial flux of allergens. We therefore assessed the integrity of the esophageal mucosal in these patients at baseline and after PPI. METHODS We performed a prospective study of 16 patients with suspected EoE and 11 controls. Patients had dysphagia, endoscopic signs of EoE, and esophageal eosinophilia (>15 eosinophils/high-power field [eos/hpf]). All subjects underwent endoscopy at baseline; endoscopy was performed again on patients after 8 weeks of treatment with high-dose esomeprazole. After PPI treatment, patients were diagnosed with EoE (>10 eos/hpf; n = 8) or PPI-REE (≤10 eos/hpf; n = 8). We evaluated the structure (intercellular spaces) and function (electrical tissue impedance, transepithelial electrical resistance, transepithelial molecule flux) of the esophageal mucosal barrier. RESULTS Compared with controls, electrical tissue impedance and transepithelial electrical resistance were reduced in patients with EoE (P < .001 and P < .001, respectively) and PPI-REE (P = .01 and P = .06, respectively), enabling transepithelial small-molecule flux. PPI therapy partially restored these changes in integrity and inflammation in patients with PPI-REE, but not in those with EoE. CONCLUSIONS The integrity of the esophageal mucosa is impaired in patients with EoE and PPI-REE, allowing transepithelial transport of small molecules. PPI therapy partially restores mucosal integrity in patients with PPI-REE, but not in those with EoE. Acid reflux might contribute to transepithelial allergen flux in patients with PPI-REE. Trialregister.nl number: NTR3480.
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Affiliation(s)
- Bram D van Rhijn
- Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands; Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, Amsterdam, The Netherlands.
| | - Pim W Weijenborg
- Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands; Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, Amsterdam, The Netherlands
| | - Joanne Verheij
- Department of Pathology, Academic Medical Center, Amsterdam, The Netherlands
| | | | - Caroline Verseijden
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, Amsterdam, The Netherlands
| | - René M J G J van den Wijngaard
- Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands; Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, Amsterdam, The Netherlands
| | - Wouter J de Jonge
- Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands; Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, Amsterdam, The Netherlands
| | - Andreas J P M Smout
- Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands
| | - Albert J Bredenoord
- Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands
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