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Calabrese F, Pasta A, Bodini G, Furnari M, Zentilin P, Giannini EG, Maniero D, Della Casa D, Cataudella G, Frazzoni M, Penagini R, Elena A, de Bortoli N, Visaggi P, Savarino V, Savarino E, Marabotto E. Applying Lyon consensus criteria in the work-up of patients with extra-oesophageal symptoms - A multicentre retrospective study. Aliment Pharmacol Ther 2024; 59:1134-1143. [PMID: 38445690 DOI: 10.1111/apt.17934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 02/18/2024] [Accepted: 02/21/2024] [Indexed: 03/07/2024]
Abstract
BACKGROUND The diagnosis of gastro-oesophageal reflux disease (GERD) based on otolaryngologist's assessment of laryngoscopic findings remains contentious in terms of sensitivity and specificity. AIMS To evaluate GERD prevalence, applying Lyon 2.0 Consensus criteria, in patients with extra-oesophageal symptoms undergoing laryngoscopic examination and impedance-pH monitoring. METHODS In this retrospective assessment, we included 470 patients with extra-oesophageal symptoms, either isolated or combined with typical symptoms, who had been referred to six tertiary Italian Gastroenterology Units between January and December 2020. Of these, 274 underwent 24-h impedance-pH monitoring and laryngoscopy off PPI therapy. GERD diagnosis followed Lyon Consensus 2.0 criteria, incorporating mean nocturnal baseline impedance when pH-impedance monitoring was inconclusive. RESULTS Laryngoscopic examination revealed pathological findings (predominantly posterior laryngitis) in 71.2% (195/274). GERD was diagnosed in 29.2% (80/274) via impedance-pH monitoring. The prevalence of GERD in patients with positive or negative laryngoscopy was similar (32.3% vs. 21.5%, p = 0.075). No significant difference in proximal reflux occurrences was noted between positive and negative laryngoscopy groups (33.3% vs. 24.1%, p = 0.133). Laryngoscopy demonstrated sensitivity and specificity of 78.8% and 32.0%, respectively, with a positive predictive value (PPV) of 32.3% and negative predictive value (NPV) of 28.4%. In contrast, a threshold of four concurrent laryngoscopic signs, identified in only eight patients, demonstrated a PPV of 93.8% and a NPV of 73.6% (sensitivity 25.4%, specificity 99.2%). CONCLUSION This study underscores the limited diagnostic accuracy of laryngoscopy, emphasising the necessity of impedance-pH monitoring for confirming GERD diagnoses using Lyon 2.0 criteria in patients with suspected extra-oesophageal symptoms.
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Affiliation(s)
- Francesco Calabrese
- Gastroenterology Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy
- IRCCS Policlinico San Martino, Genoa, Italy
| | - Andrea Pasta
- Gastroenterology Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Giorgia Bodini
- Gastroenterology Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy
- IRCCS Policlinico San Martino, Genoa, Italy
| | - Manuele Furnari
- Gastroenterology Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy
- IRCCS Policlinico San Martino, Genoa, Italy
| | - Patrizia Zentilin
- Gastroenterology Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy
- IRCCS Policlinico San Martino, Genoa, Italy
| | - Edoardo G Giannini
- Gastroenterology Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy
- IRCCS Policlinico San Martino, Genoa, Italy
| | - Daria Maniero
- Gastroenterology Unit, Azienda Ospedale Università di Padova, Padua, Italy
| | - Domenico Della Casa
- Department of Surgical-Surgery Endoscopy, Spedali Civili, University of Brescia, Brescia, Italy
| | | | - Marzio Frazzoni
- Digestive Pathophysiology Unit, Baggiovara Hospital, Modena, Italy
| | - Roberto Penagini
- Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi, Milan, Italy
| | - Arsiè Elena
- Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi, Milan, Italy
| | - Nicola de Bortoli
- Gastrointestinal Unit-Department of Translational Sciences and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Pierfrancesco Visaggi
- Gastrointestinal Unit-Department of Translational Sciences and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Vincenzo Savarino
- Gastroenterology Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Edoardo Savarino
- Gastroenterology Unit, Azienda Ospedale Università di Padova, Padua, Italy
| | - Elisa Marabotto
- Gastroenterology Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy
- IRCCS Policlinico San Martino, Genoa, Italy
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2
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Olmos JA, Pandolfino JE, Piskorz MM, Zamora N, Valdovinos Díaz MA, Remes Troche JM, Guzmán M, Hani A, Valdovinos García LR, Pitanga Lukashok H, Domingues G, Vesco E, Rivas MM, Ovalle LFP, Cisternas D, Vela MF. Latin American consensus on diagnosis of gastroesophageal reflux disease. Neurogastroenterol Motil 2024; 36:e14735. [PMID: 38225792 DOI: 10.1111/nmo.14735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 12/05/2023] [Accepted: 12/18/2023] [Indexed: 01/17/2024]
Abstract
BACKGROUND Diagnosing gastroesophageal reflux disease (GERD) can be challenging given varying symptom presentations, and complex multifactorial pathophysiology. The gold standard for GERD diagnosis is esophageal acid exposure time (AET) measured by pH-metry. A variety of additional diagnostic tools are available. The goal of this consensus was to assess the individual merits of GERD diagnostic tools based on current evidence, and provide consensus recommendations following discussion and voting by experts. METHODS This consensus was developed by 15 experts from nine countries, based on a systematic search of the literature, using GRADE (grading of recommendations, assessment, development and evaluation) methodology to assess the quality and strength of the evidence, and provide recommendations regarding the diagnostic utility of different GERD diagnosis tools, using AET as the reference standard. KEY RESULTS A proton pump inhibitor (PPI) trial is appropriate for patients with heartburn and no alarm symptoms, but nor for patients with regurgitation, chest pain, or extraesophageal presentations. Severe erosive esophagitis and abnormal reflux monitoring off PPI are clearly indicative of GERD. Esophagram, esophageal biopsies, laryngoscopy, and pharyngeal pH monitoring are not recommended to diagnose GERD. Patients with PPI-refractory symptoms and normal endoscopy require reflux monitoring by pH or pH-impedance to confirm or exclude GERD, and identify treatment failure mechanisms. GERD confounders need to be considered in some patients, pH-impedance can identify supragrastric belching, impedance-manometry can diagnose rumination. CONCLUSIONS Erosive esophagitis on endoscopy and abnormal pH or pH-impedance monitoring are the most appropriate methods to establish a diagnosis of GERD. Other tools may add useful complementary information.
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Affiliation(s)
- Jorge A Olmos
- Neurogastroenterology Sector, Hospital de Clinicas Jose de San Martin, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - John E Pandolfino
- Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - María M Piskorz
- Neurogastroenterology Sector, Hospital de Clinicas Jose de San Martin, Universidad de Buenos Aires, Buenos Aires, Argentina
| | | | - Miguel A Valdovinos Díaz
- UNAM, Ciudad de Mexico, Mexico
- Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - José M Remes Troche
- Institute of Medical Biological Research, Universidad Veracruzana, Veracruz, Mexico
| | - Mauricio Guzmán
- Neurogastroenterology Unit, Gastroenterology Service, Hospital San Martín de La Plata, Buenos Aires, Argentina
| | - Albis Hani
- Hospital San Ignacio-Pontificia Universidad Javeriana, Bogotá, Colombia
| | | | - Hannah Pitanga Lukashok
- Digestive Motility Service, Instituto Ecuatoriano de Enfermedades Digestivas-IECED, Guayaquil, Ecuador
| | | | - Eduardo Vesco
- Neuromotility Unit, Clínica Angloamericana, Lima, Peru
- Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Mariel Mejia Rivas
- Internal Medicine, Gastroenterology and Digestive Endoscopy Service, Hospital Vivian Pellas, Managua, Nicaragua
| | - Luis F Pineda Ovalle
- Neurogastroenterology and Motility Service Motility Instituto Gut Médica, Bogotá, Colombia
| | - Daniel Cisternas
- Clínica Alemana de Santiago, School of Medicine, Universidad del Desarrollo, Clínica Alemana, Vitacura, Chile
| | - Marcelo F Vela
- Division of Gastroenterology and Hepatology, Mayo Clinic, Scottsdale, Arizona, USA
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Lee YJ, Noh JK, Woo SR, Kang SW, Eun YG, Lee GJ. Determination of pepsin in human saliva using pepsin-susceptible peptide reporter and colorimetric dipstick assay: a prospective, cross-sectional study. Mikrochim Acta 2024; 191:117. [PMID: 38294558 DOI: 10.1007/s00604-024-06192-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Accepted: 01/01/2024] [Indexed: 02/01/2024]
Abstract
A simple and effective pepsin detection assay is reported based on a pepsin-susceptible peptide (PSP) reporter degradation strategy. PSP, which can be specifically cleaved by pepsin, was modified with fluorescein isothiocyanate (FITC) and biotin at the N- and C-terminals to be used as a reporter for colorimetric detection of dipsticks. A universal lateral flow dipstick consisting of a streptavidin test line for biotin binding and a sample pad immobilized with a gold-labeled polyclonal (rabbit) anti-FITC antibody was used to verify PSP-based pepsin detection. When the PSP reporter reacts with pepsin in a tube, it cleaves into two fragments, and the cleaved fragments do not display any color on the test line. Therefore, the higher the concentration of pepsin is, the greater is the decrease in test line intensity (IT-line) and the higher is the control line intensity (IC-line). First, the PSP cleavage and dipstick assay conditions for pepsin detection was optimized. The ratio of color intensity (IT-line/IC-line) of PSP-based dipstick assay showed a linear relationship with log concentration of pepsin ranging between 4 and 500 ng/mL (R2 = 0.98, n = 6), with a limit of detection of 1.4 ng/mL. It also exhibited high specificity and good reproducibility. Finally, pepsin levels were quantified in saliva samples from healthy controls (n = 34) and patients with laryngopharyngeal reflux (LPR, n = 61). Salivary pepsin levels were higher in patients with LPR than in healthy controls. The salivary pepsin levels correlated with those measured using a conventional enzyme-linked immunosorbent assay kit. Therefore, this PSP-based dipstick assay is a convenient tool for assessing salivary pepsin levels.
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Affiliation(s)
- Young Ju Lee
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Joo Kyung Noh
- Department of Biomedical Science and Technology, Graduate School, Kyung Hee University, Seoul, 02447, Republic of Korea
- Department of Otolaryngology-Head and Neck Surgery, Kyung Hee University School of Medicine, Kyung Hee University Medical Center, Seoul, 02447, Republic of Korea
| | - Seon Rang Woo
- Department of Otolaryngology-Head and Neck Surgery, Kyung Hee University School of Medicine, Kyung Hee University Medical Center, Seoul, 02447, Republic of Korea
| | - Sung-Woong Kang
- Department of Medical Engineering, Kyung Hee University Graduate School, Seoul, 02447, Republic of Korea
| | - Young-Gyu Eun
- Department of Otolaryngology-Head and Neck Surgery, Kyung Hee University School of Medicine, Kyung Hee University Medical Center, Seoul, 02447, Republic of Korea
| | - Gi-Ja Lee
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea.
- Department of Medical Engineering, Kyung Hee University Graduate School, Seoul, 02447, Republic of Korea.
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Javorská Z, Zeleník K, Lukáčová K, Taimrová R, Vrtková A, Hránková V, Lubojacký J, Formánek M, Tedla M. Mulberry Posterior Inferior Nasal Turbinate Is Associated with a Lower Pharyngeal pH Environment. Laryngoscope 2024; 134:62-68. [PMID: 37246719 DOI: 10.1002/lary.30766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/24/2023] [Accepted: 05/13/2023] [Indexed: 05/30/2023]
Abstract
OBJECTIVES Mulberry-like changes of the posterior inferior nasal turbinate (MPINT) can lead to nasal obstruction. Extraesophageal reflux (EER) characterized by lower pH causes mucosal inflammation and therefore can contribute to sinonasal pathologies. No prior studies have objectively examined the possible association between acidic pH and MPINT formation. Therefore, this study is aimed to investigate the 24-h pharyngeal pH value in patients with MPINT. STUDY DESIGN Prospective case-control multi-center study. METHODS Fifty-five patients with chronic EER symptoms were included in the study. They filled in questionnaires aimed at reflux and sinonasal symptoms (RSI®, SNOT-22) and underwent video endoscopy evaluating the laryngeal findings (RFS®) and the presence or absence of the MPINT. And, 24-h oropharyngeal pH monitoring was used to detect the acidic pH environment in the pharynx. RESULTS Out of the 55 analyzed patients, 38 had the MPINT (group 1), and in 17 patients, the MPINT was absent (group 2). Based on the pathological RYAN Score, in 29 (52.7%) patients, severe acidic pH drops were detected. In group 1, the acidic pH drops were diagnosed significantly more often (68.4%) compared with those in group 2 (p = 0.001). Moreover, in group 1, a significantly higher median total percentage of time spent below pH 5.5 (p = 0.005), as well as a higher median number of events lasting more than 5 min (p = 0.006), and higher median total number of events with pH drops (p = 0.017) were observed. CONCLUSION In this study, the MPINT was significantly more often present in patients with acidic pH events detected by 24-h oropharyngeal pH monitoring. Acidic pH in the pharynx might lead to MPINT formation. LEVEL OF EVIDENCE 3 Laryngoscope, 134:62-68, 2024.
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Affiliation(s)
- Zuzana Javorská
- Department of Otolaryngology, Head and Neck Surgery, Comenius University, University Hospital, Bratislava, Slovakia
| | - Karol Zeleník
- Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital Ostrava, Ostrava, Czech Republic
- Department of Craniofacial Surgery, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
| | - Kristína Lukáčová
- Department of Otolaryngology, Head and Neck Surgery, Comenius University, University Hospital, Bratislava, Slovakia
| | | | - Adéla Vrtková
- Department of Applied Mathematics, Faculty of Electrical Engineering and Computer Science, VSB-Technical University of Ostrava, Ostrava, Czech Republic
- Department of Deputy Director for Science, Research and Education, University Hospital Ostrava, Ostrava, Czech Republic
| | - Viktória Hránková
- Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital Ostrava, Ostrava, Czech Republic
- Department of Craniofacial Surgery, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
| | - Jakub Lubojacký
- Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital Ostrava, Ostrava, Czech Republic
- Department of Craniofacial Surgery, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
| | - Martin Formánek
- Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital Ostrava, Ostrava, Czech Republic
- Department of Craniofacial Surgery, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
| | - Miroslav Tedla
- Department of Otolaryngology, Head and Neck Surgery, Comenius University, University Hospital, Bratislava, Slovakia
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Yun JM, Kim KW, Kim S, So YK. Salivary pepsin as an independent predictor of treatment response for laryngopharyngeal reflux: prospective cohort study with multivariate analysis. Sci Rep 2023; 13:22893. [PMID: 38129481 PMCID: PMC10739976 DOI: 10.1038/s41598-023-50014-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023] Open
Abstract
To analyze the predictive value of salivary pepsin for treatment outcomes in laryngopharyngeal reflux (LPR) using multivariate analysis that includes various associated factors. This prospective cohort study was conducted between August 2020 and August 2022. Patients with LPR who had symptoms lasting more than 1 month and a reflux symptom index (RSI) of 14 or higher were enrolled. The participants received a 2-month regimen of proton pump inhibitors (PPIs) treatment and lifestyle modification. Salivary pepsin was checked using fasting saliva before treatment. Salivary pepsin was detected more frequently in the good treatment response group (61.1%), compared to 14.3% in the poor response group. Similarly, patients with higher compliance to lifestyle modifications (> 90%) had a higher chance of a good response (91.7%) compared to those with lower compliance, who had a 53.8% chance of a good response. Other clinical factors have no significant association with treatment response. In multivariate analysis, both pretreatment salivary pepsin and higher compliance with lifestyle modification were found to be independent factors for treatment response (OR 14.457, CI 1.075 ~ 194.37 for both). This study found that positive salivary pepsin and strict lifestyle modification are independent predictors of treatment outcomes in LPR.
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Affiliation(s)
- Ji Min Yun
- Department of Otorhinolaryngology-Head and Neck Surgery, Ilsan Paik Hospital, Inje University College of Medicine, 170 Juhwa-ro, Ilsanseo-gu, Goyang-si, Gyeonggi-do, 10380, Republic of Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Ki Won Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Ilsan Paik Hospital, Inje University College of Medicine, 170 Juhwa-ro, Ilsanseo-gu, Goyang-si, Gyeonggi-do, 10380, Republic of Korea
| | - Suji Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Ilsan Paik Hospital, Inje University College of Medicine, 170 Juhwa-ro, Ilsanseo-gu, Goyang-si, Gyeonggi-do, 10380, Republic of Korea
| | - Yoon Kyoung So
- Department of Otorhinolaryngology-Head and Neck Surgery, Ilsan Paik Hospital, Inje University College of Medicine, 170 Juhwa-ro, Ilsanseo-gu, Goyang-si, Gyeonggi-do, 10380, Republic of Korea.
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Rao YF, Wang J, Cheng DN, Xu Y, Ren X, Yang W, Liu G, Xu W, Yan XH, Song Y, Zheng YB, An P, Zhong DL, He ZP, Ren JJ, Zhao Y. The Controversy of Pepsinogen A/Pepsin A in Detecting Extra-Gastroesophageal Reflux. J Voice 2023; 37:748-756. [PMID: 34090740 DOI: 10.1016/j.jvoice.2021.04.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/31/2021] [Accepted: 04/20/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND Pepsinogen A (PGA)/pepsin A is often used as a diagnostic marker of extra-gastroesophageal reflux. We aimed to explore whether its positivity in upper aerodigestive tract (UADT) was specific enough to diagnose reflux. METHODS PGA/pepsin A protein levels were examined in 10 types of tissues and 10 types of body fluid by immunological staining, western blot or Elisa, using three different commercially available brands simultaneously. Liquid chromatography-tandem mass spectrometry parallel reaction monitoring (LC-MS/MS PRM) served as a gold reference for the detection of PGA/pepsin A proteins. PGA gene expression was analyzed by reverse transcriptase sequencing methods for tissue samples. Specifically, 24 hour pH monitoring technique was conducted for patients who donated saliva samples. RESULTS Eight out of ten types of human tissue samples (stomach, esophagus, lung, kidney, colon, parotid gland, nasal turbinate and nasal polyps) were confirmed positive for PGA/pepsin A gene and protein by genetic and PRM technique, respectively. Two out of ten types of body fluid samples (gastric fluid, urine) were confirmed positive for PGA/pepsin A protein by PRM technique. The consistence rates of PGA/pepsin A positivity among three commercial antibody brands and Elisa kit were poor, and Elisa results of salivary did not match with 24-hour pH monitoring. CONCLUSIONS Multiple tissues and body fluid could be detected baseline expression levels of PGA/pepsin A gene and protein. However, those commercially available PGA/pepsin A antibodies achieved poor sensitivity and specificity, therefore, relying on the detection of PGA/pepsin A in UADT by single antibodies to diagnose extra-gastroesophageal reflux without a specific positive cut-off value is unreliable.
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Affiliation(s)
- Yu-Fang Rao
- Department of Oto-Rhino-Laryngology, and West China Biomedical Big Data Center, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
| | - Jing Wang
- Department of Oto-Rhino-Laryngology, and West China Biomedical Big Data Center, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
| | - Dan-Ni Cheng
- Department of Oto-Rhino-Laryngology, and West China Biomedical Big Data Center, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
| | - Yang Xu
- Department of Oto-Rhino-Laryngology, and West China Biomedical Big Data Center, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
| | - Xue Ren
- Institute of statistics and management, Shanghai University of Finance and Economics, Shanghai, China
| | - Wen Yang
- Department of Oto-Rhino-Laryngology, and West China Biomedical Big Data Center, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
| | - Geoffrey Liu
- Princess Margaret Cancer Centre and University Health Network, University of Toronto, Toronto, ON, Canada.; Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Wei Xu
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada; Department of Biostatistics, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Xiao-Hong Yan
- Department of Oto-Rhino-Laryngology, and West China Biomedical Big Data Center, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
| | - Yao Song
- Institute of statistics and management, Shanghai University of Finance and Economics, Shanghai, China
| | - Yong-Bo Zheng
- Department of Oto-Rhino-Laryngology, and West China Biomedical Big Data Center, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
| | - Ping An
- Department of Oto-Rhino-Laryngology, and West China Biomedical Big Data Center, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
| | - Da-Lin Zhong
- Department of Oto-Rhino-Laryngology, and West China Biomedical Big Data Center, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
| | - Zhao-Ping He
- Department of Biomedical Research, Nemours/Alfred I.duPont Hospital for Children, Wilmington, Delaware, USA
| | - Jian-Jun Ren
- Department of Oto-Rhino-Laryngology, and West China Biomedical Big Data Center, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China.; Princess Margaret Cancer Centre and University Health Network, University of Toronto, Toronto, ON, Canada..
| | - Yu Zhao
- Department of Oto-Rhino-Laryngology, and West China Biomedical Big Data Center, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China..
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Kouki S, Viitanen SJ, Koho N, Laurila HP, Lilja‐Maula L, Holopainen S, Neuvonen M, Niemi M, Fastrès A, Clercx C, Rajamäki MM. Extraesophageal reflux and reflux aspiration in dogs with respiratory diseases and in healthy dogs. Vet Med (Auckl) 2023; 37:268-276. [PMID: 36655626 PMCID: PMC9889628 DOI: 10.1111/jvim.16622] [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: 05/20/2022] [Accepted: 12/15/2022] [Indexed: 01/20/2023]
Abstract
BACKGROUND Salivary bile acids are used to diagnose extraesophageal reflux (EER) and to evaluate the risk of reflux aspiration that is associated with respiratory diseases in dogs. OBJECTIVES To study total bile acid (TBA) concentrations in saliva and in bronchoalveolar lavage fluid (BALF) to investigate EER and reflux aspiration in dogs with respiratory diseases and in healthy dogs. ANIMALS Thirty-one West Highland White Terriers (WHWTs) with idiopathic pulmonary fibrosis (IPF), 12 dogs with inflammatory airway disease (IAD), 6 dogs with recurrent pneumonia (RP), 26 brachycephalic dogs (BD), 27 healthy WHWTs (HW), 52 healthy dogs (HD). All privately-owned dogs. METHODS Saliva and BALF were collected from dogs in each group. RESULTS Salivary TBA concentrations were higher in IPF (median 0.1692 μM, interquartile range [IQR] 0.1115-0.2925 μM, Cohen's d 3.4, 95% confidence interval [CI] 2.2-4.0, P < .001) and BD (0.0256 μM, IQR 0.0086-0.0417 μM, d 0.5, CI -0.1 to 1.1, P = .003) compared to HD (0 μM, IQR not quantifiable [n.q.]-0.0131 μM). Bronchoalveolar lavage fluid TBA concentrations were higher in IPF (0.0117 μM, IQR 0.0048-0.0361 μM, d 0.5, CI 0-1.1, P < .001) compared to HD (0 μM, IQR n.q.-0.0074 μM). CONCLUSION AND CLINICAL IMPORTANCE Extraesophageal reflux and reflux aspiration occur in healthy dogs and those with respiratory diseases.
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Affiliation(s)
- Sirkku Kouki
- Department of Equine and Small Animal Medicine, Faculty of Veterinary MedicineUniversity of HelsinkiHelsinkiFinland
| | - Sanna J. Viitanen
- Department of Equine and Small Animal Medicine, Faculty of Veterinary MedicineUniversity of HelsinkiHelsinkiFinland
| | - Ninna Koho
- Department of Equine and Small Animal Medicine, Faculty of Veterinary MedicineUniversity of HelsinkiHelsinkiFinland
| | - Henna P. Laurila
- Department of Equine and Small Animal Medicine, Faculty of Veterinary MedicineUniversity of HelsinkiHelsinkiFinland
| | - Liisa Lilja‐Maula
- Department of Equine and Small Animal Medicine, Faculty of Veterinary MedicineUniversity of HelsinkiHelsinkiFinland
| | - Saila Holopainen
- Department of Equine and Small Animal Medicine, Faculty of Veterinary MedicineUniversity of HelsinkiHelsinkiFinland
| | - Mikko Neuvonen
- Department of Clinical Pharmacology, Faculty of MedicineUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
| | - Mikko Niemi
- Department of Clinical Pharmacology, Faculty of MedicineUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
| | - Aline Fastrès
- Department of Clinical Sciences, Faculty of Veterinary MedicineUniversity of LiègeLiègeBelgium
| | - Cécile Clercx
- Department of Clinical Sciences, Faculty of Veterinary MedicineUniversity of LiègeLiègeBelgium
| | - Minna M. Rajamäki
- Department of Equine and Small Animal Medicine, Faculty of Veterinary MedicineUniversity of HelsinkiHelsinkiFinland
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Johnston N, Samuels TL, Goetz CJ, Arnold LA, Smith BC, Seabloom D, Wuertz B, Ondrey F, Wiedmann TS, Vuksanovic N, Silvaggi NR, MacKinnon AC, Miller J, Bock J, Blumin JH. Oral and Inhaled Fosamprenavir Reverses Pepsin-Induced Damage in a Laryngopharyngeal Reflux Mouse Model. Laryngoscope 2023; 133 Suppl 1:S1-S11. [PMID: 35678265 PMCID: PMC9732152 DOI: 10.1002/lary.30242] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/11/2022] [Accepted: 05/26/2022] [Indexed: 12/24/2022]
Abstract
OBJECTIVE More than 20% of the US population suffers from laryngopharyngeal reflux. Although dietary/lifestyle modifications and alginates provide benefit to some, there is no gold standard medical therapy. Increasing evidence suggests that pepsin is partly, if not wholly, responsible for damage and inflammation caused by laryngopharyngeal reflux. A treatment specifically targeting pepsin would be amenable to local, inhaled delivery, and could prove effective for endoscopic signs and symptoms associated with nonacid reflux. The aim herein was to identify small molecule inhibitors of pepsin and test their efficacy to prevent pepsin-mediated laryngeal damage in vivo. METHODS Drug and pepsin binding and inhibition were screened by high-throughput assays and crystallography. A mouse model of laryngopharyngeal reflux (mechanical laryngeal injury once weekly for 2 weeks and pH 7 solvent/pepsin instillation 3 days/week for 4 weeks) was provided inhibitor by gavage or aerosol (fosamprenavir or darunavir; 5 days/week for 4 weeks; n = 3). Larynges were collected for histopathologic analysis. RESULTS HIV protease inhibitors amprenavir, ritonavir, saquinavir, and darunavir bound and inhibited pepsin with IC50 in the low micromolar range. Gavage and aerosol fosamprenavir prevented pepsin-mediated laryngeal damage (i.e., reactive epithelia, increased intraepithelial inflammatory cells, and cell apoptosis). Darunavir gavage elicited mild reactivity and no discernable protection; aerosol protected against apoptosis. CONCLUSIONS Fosamprenavir and darunavir, FDA-approved therapies for HIV/AIDS, bind and inhibit pepsin, abrogating pepsin-mediated laryngeal damage in a laryngopharyngeal reflux mouse model. These drugs target a foreign virus, making them ideal to repurpose. Reformulation for local inhaled delivery could further improve outcomes and limit side effects. LEVEL OF EVIDENCE NA. Laryngoscope, 133:S1-S11, 2023.
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Affiliation(s)
- Nikki Johnston
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, WI
- Department of Microbiology and Immunology, Medical College of Wisconsin
| | - Tina L. Samuels
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, WI
| | | | - Leggy A. Arnold
- Department of Chemistry and Biochemistry, Milwaukee Institute for Drug Discovery, University of Wisconsin, Milwaukee, WI
| | - Brian C. Smith
- Department of Biochemistry, Medical College of Wisconsin
| | - Donna Seabloom
- Department of Otolaryngology Head and Neck Surgery, University of Minnesota, Minneapolis, MN
| | - Beverly Wuertz
- Department of Otolaryngology Head and Neck Surgery, University of Minnesota, Minneapolis, MN
| | - Frank Ondrey
- Department of Otolaryngology Head and Neck Surgery, University of Minnesota, Minneapolis, MN
| | | | - Nemanja Vuksanovic
- Department of Chemistry and Biochemistry, Milwaukee Institute for Drug Discovery, University of Wisconsin, Milwaukee, WI
| | - Nicholas R. Silvaggi
- Department of Chemistry and Biochemistry, Milwaukee Institute for Drug Discovery, University of Wisconsin, Milwaukee, WI
| | | | - James Miller
- Department of Pathology, Medical College of Wisconsin
| | - Jonathan Bock
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, WI
| | - Joel H. Blumin
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, WI
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Wu J, Ma Y, Chen Y. GERD-related chronic cough: Possible mechanism, diagnosis and treatment. Front Physiol 2022; 13:1005404. [PMID: 36338479 PMCID: PMC9630749 DOI: 10.3389/fphys.2022.1005404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 10/07/2022] [Indexed: 11/04/2023] Open
Abstract
GERD, or gastroesophageal reflux disease, is a prevalent medical condition that affects millions of individuals throughout the world. Chronic cough is often caused by GERD, and chronic cough caused by GER is defined as GERD-related chronic cough (GERC). It is still unclear what the underlying molecular mechanism behind GERC is. Reflux theory, reflex theory, airway allergies, and the novel mechanism of esophageal motility disorders are all assumed to be linked to GERC. Multichannel intraluminal impedance combined with pH monitoring remains the gold standard for the diagnosis of GERC, but is not well tolerated by patients due to its invasive nature. Recent discoveries of new impedance markers and new techniques (mucosal impedance testing, salivary pepsin, real-time MRI and narrow band imaging) show promises in the diagnosis of GERD, but the role in GERC needs further investigation. Advances in pharmacological treatment include potassium-competitive acid blockers and neuromodulators (such as Baclofen and Gabapentin), prokinetics and herbal medicines, as well as non-pharmacological treatments (such as lifestyle changes and respiratory exercises). More options have been provided for the treatment of GERC other than acid suppression therapy and anti-reflux surgery. In this review, we attempt to review recent advances in GERC mechanism, diagnosis, and subsequent treatment options, so as to provide guidance for management of GERC.
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Affiliation(s)
| | - Yiming Ma
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yan Chen
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
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10
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Li M, Wang Y, He K, Wang Y. Determination of pepsin by capillary electrophoresis using mixed polymer coated capillary with switchable properties towards protein adsorption/desorption. J Sep Sci 2022; 45:1960-1970. [PMID: 35352869 DOI: 10.1002/jssc.202100999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 03/08/2022] [Accepted: 03/26/2022] [Indexed: 11/07/2022]
Abstract
In this work, a simple on-line preconcentration method for quantitative detection of pepsin was realized by using the binary mixed polymer brushes coated capillary with switchable properties towards protein adsorption. Firstly, the binary mixed polymer brushes were prepared by grafting poly(2-methyl-2-oxazoline) and poly(4-vinylpyridine) onto the inner wall of the capillary through polydopamine anchor. Then the coatings were characterized by X-ray photoelectron spectrometer and electroosmotic flow measurement. The results indicated that the composition of coating could be controlled by varying the feed ratio of poly(2-methyl-2-oxazoline) to poly(4-vinylpyridine) and the inner surface charge could be tuned toward the change of pH and ionic strength. The results showed when poly(2-methyl-2-oxazoline)/poly(4-vinylpyridine) mass ratio was 80/20, the highest on-line preconcentration effect was obtained and the sensitivity enhancement factor was 6.3. Moreover, satisfactory sensitivity (limit of detection: 7.5 ng/mL) and good repeatability were obtained with on-line preconcentration method. The polymer coated capillary was still stable for on-line preconcentration and detection of pepsin after 50 consecutive runs. Lastly, the proposed method was used successfully to on-line preconcentrate pepsin in saliva matrix. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Mengqin Li
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Yuchen Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Kang He
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Yanmei Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
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11
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Atypical Clinical Presentation of Laryngopharyngeal Reflux: A 5-Year Case Series. J Clin Med 2021; 10:jcm10112439. [PMID: 34072701 PMCID: PMC8198232 DOI: 10.3390/jcm10112439] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/21/2021] [Accepted: 05/28/2021] [Indexed: 12/25/2022] Open
Abstract
Background: Laryngopharyngeal reflux (LPR) is a common disease in otolaryngology characterized by an inflammatory reaction of the mucosa of the upper aerodigestive tract caused by digestive refluxate enzymes. LPR has been identified as the etiological or favoring factor of laryngeal, oral, sinonasal, or otological diseases. In this case series, we reported the atypical clinical presentation of LPR in patients presenting in our clinic with reflux. Methods: A retrospective medical chart review of 351 patients with LPR treated in the European Reflux Clinic in Brussels, Poitiers and Paris was performed. In order to be included, patients had to report an atypical clinical presentation of LPR, consisting of symptoms or findings that are not described in the reflux symptom score and reflux sign assessment. The LPR diagnosis was confirmed with a 24 h hypopharyngeal-esophageal impedance pH study, and patients were treated with a combination of diet, proton pump inhibitors, and alginates. The atypical symptoms or findings had to be resolved from pre- to posttreatment. Results: From 2017 to 2021, 21 patients with atypical LPR were treated in our center. The clinical presentation consisted of recurrent aphthosis or burning mouth (N = 9), recurrent burps and abdominal disorders (N = 2), posterior nasal obstruction (N = 2), recurrent acute suppurative otitis media (N = 2), severe vocal fold dysplasia (N = 2), and recurrent acute rhinopharyngitis (N = 1), tearing (N = 1), aspirations (N = 1), or tracheobronchitis (N = 1). Abnormal upper aerodigestive tract reflux events were identified in all of these patients. Atypical clinical findings resolved and did not recur after an adequate antireflux treatment. Conclusion: LPR may present with various clinical presentations, including mouth, eye, tracheobronchial, nasal, or laryngeal findings, which may all regress with adequate treatment. Future studies are needed to better specify the relationship between LPR and these atypical findings through analyses identifying gastroduodenal enzymes in the inflamed tissue.
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12
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Laryngopharyngeal Reflux Among Patients Undergoing Bariatric Surgery. Obes Surg 2021; 31:3749-3757. [PMID: 34046825 DOI: 10.1007/s11695-021-05492-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 05/14/2021] [Accepted: 05/20/2021] [Indexed: 10/21/2022]
Abstract
PURPOSE The effect of altered subsphincteric gastric volume and pressure after bariatric surgery on laryngopharyngeal reflux (LPR) remains largely unknown. This was a cross-sectional pilot study conducted between January 2018 and January 2019 to identify changes in LPR symptoms and signs in bariatric surgery patients presurgery and postsurgery. MATERIALS AND METHODS Thirty-four patients listed for bariatric surgery in a single tertiary referral center were recruited, where 31 (77.4% female, mean age 46.3 ± 8.9 years) fulfilled the eligibility criteria. Of the eligible patients, 54.8% and 45.2% underwent sleeve gastrectomy (SG) and gastric bypass (GB), respectively. LPR symptoms were assessed using the self-reported reflux symptom index (RSI). Video-recorded endolaryngeal signs were scored using the reflux finding score (RFS) by two blinded otolaryngologists. Patients' presurgical and 3-month postsurgical body mass index (BMI), RSI, and RFS were determined. Patients were deemed as having LPR when RSI > 13 or RFS > 7. RESULTS There was a significant correlation between the postsurgical RSI and RFS changes (Pearson's r = 0.474, p = 0.007). Of the 31 patients, 12.9% (RSI) and 6.4% (RFS) recovered from preexisting LPR, whereas 22.6% (RSI) and 3.2% (RFS) developed new de novo LPR postsurgery. The postsurgical mean RFS change improved significantly in the GB group compared with that of the SG group (p < 0.05). CONCLUSION LPR is best assessed clinically using a multimodal approach (RSI and RFS). Bariatric surgery may worsen or lead to de novo LPR. Recognizing the LPR outcomes in these patients is paramount for optimal voice, speech, and swallowing functions.
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Involvement of Laryngopharyngeal Reflux in Ocular Diseases: A State-of-the-Art Review. J Voice 2021:S0892-1997(21)00106-5. [PMID: 33849761 DOI: 10.1016/j.jvoice.2021.03.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 03/02/2021] [Accepted: 03/03/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND Laryngopharyngeal reflux-associated symptoms embrace a wide variety of head and neck manifestations. Its participation in eye disorders has recently been postulated, and there is currently no consensus in this regard. The aim of this manuscript is to review the role of reflux in the development of ocular signs and symptoms, and its physio-pathological mechanisms. METHODS A systematic approach based on the preferred reporting Items for a systematic review and meta-analysis checklist with a modified population, intervention, comparison, and outcome framework was used to structure the review process of studies that evaluated the possible association, with clear diagnostic methods, of laryngopharyngeal reflux and ocular signs and symptoms. Search was conducted in different indexed databases (PubMed/MEDLINE, the Cochrane Library, Scielo and Web of Science) and through the meta-searcher Trip Database with the keywords: reflux, laryngitis, laryngopharyngeal, gastroesophageal, ocular, eye, symptoms, signs, conjunctivitis, keratitis, dacryocystitis, dry eye. RESULTS Seven studies met the inclusion criteria, in which the primary acquired nasolacrimal duct obstruction and the ocular surface disease were evaluated. The local increase of eye pepsin concentration (>2.5 ng/mL) may affect ocular surface though its direct proteolytic activity and the local expression of proinflammatory cytokines. The H. Pylori, with a similar mechanism to reach the lacrimonasal duct, would be associated with the release of proinflammatory and vasoactive substances that would lead to a mucosa injury and chronic inflammation. Ocular Surface Disease Index seems to correlate directly with the reflux severity, with cut-off of 41.67 score as predictor for disease. DISCUSSION The role of laryngopharyngeal reflux in the development of ocular disorders has not yet been demonstrated and data are limited and heterogeneous. It seems theoretically conceivable that pepsin may reach lachrymal duct area through hypopharyngeal-nasal gaseous reflux events. Future studies using objective testing for diagnosis and pepsin detection into the tear and nasal mucosa are needed in order to explore this potential relationship.
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14
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Dai YF, Tan JJ, Deng CQ, Liu X, Lv ZH, Li XP. Association of pepsin and DNA damage in laryngopharyngeal reflux-related vocal fold polyps. Am J Otolaryngol 2020; 41:102681. [PMID: 32889371 DOI: 10.1016/j.amjoto.2020.102681] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/25/2020] [Accepted: 08/10/2020] [Indexed: 12/12/2022]
Abstract
PURPOSE This study aimed to evaluate if laryngopharyngeal reflux (LPR) plays a role as a risk factor for vocal fold polyps (VFPs), and if pepsin is associated with higher oxidative DNA damage of VFPs in the presence of LPR. METHODS Thirty patients with VFPs were recruited between 2017 and 2018. Prior to surgery, a laryngoscopy was performed on all subjects to evaluate VFPs. Polyp tissue and saliva samples were obtained scrupulously. Hematoxylin-eosin staining was performed for pathologic analysis. Immunohistochemistry and ELISA were used to detect pepsin in tissue and saliva of VFP patients. 8-OHdG and p-H2AX expression was detected to measure oxidative DNA damage in tissue. DNA damage was investigated in human immortalized laryngeal epithelial cells exposed to pepsin. RESULTS The pepsin concentration in saliva was significantly higher (t = 2.38, P = .024) in the pepsin positive group. There was no significant difference in pepsin expression at different sites and pathological subtypes of VFPs. The levels of 8-OHdG and p-H2AX were significantly higher in the pepsin positive group and positively correlated with the tissue expression of pepsin. The concentration of pepsin in saliva also showed a significant correlation with 8-OHdG levels. Expression of 8-OHdG and p-H2AX, and tail moment of the comet assay were elevated in human immortalized laryngeal epithelial cells following treatment with pepsin. CONCLUSION Patients with VFPs have higher levels of oxidative DNA damage in the presence of pepsin reflux. Pepsin may induce DNA damage in laryngeal epithelial cells and participate in the pathogenesis of VFPs.
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15
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Plateroti R, Sacchetti M, Magliulo G, Plateroti AM, Pace A, Moramarco A, Lambiase A, Bruscolini A. Evidence of Pepsin-Related Ocular Surface Damage and Dry Eye (PROD Syndrome) in Patients with Laryngopharyngeal Reflux. Life (Basel) 2020; 10:life10090202. [PMID: 32942541 PMCID: PMC7554736 DOI: 10.3390/life10090202] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/11/2020] [Accepted: 09/12/2020] [Indexed: 02/07/2023] Open
Abstract
Background: patients with laryngopharyngeal reflux (LPR) showed detectable levels of tear pepsin that explain the nasolacrimal obstruction. The purpose of this study was to determine whether patients with LPR show ocular surface changes and to investigate the relationship between lacrimal pepsin concentration and ocular alterations. Methods: Fifty patients with positive endoscopic signs for LPR and an equal or higher score of 13 and 7 for Reflux Symptom Index and Reflux Finding Score were enrolled. Twenty healthy patients with no reflux disease and dry eye were included as the control group. After evaluation of ocular discomfort symptoms, the tear break-up time test, corneal staining, and tear sampling were performed. Tear pepsin levels were measured using Pep-testTM kit. Results: Patients with LPR showed ocular surface changes including epithelial damage (48%) and impairment of lacrimal function (72%). Tear pepsin levels were detectable in 32 out of 50 (64%) patients with LPR (mean ± SD: 55.4 ± 67.5 ng/mL) and in none of the control subjects. Most of the LPR patients complained of ocular discomfort symptoms, including itching (38%), redness (56%), or foreign body sensation (40%). Tear pepsin levels were significantly correlated with the severity of LPR disease and with ocular surface changes. Conclusions: A multidisciplinary approach, including ophthalmological evaluation, should be considered in order to improve the management of patients with LPR.
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Affiliation(s)
- Rocco Plateroti
- Department of Sense Organs, Sapienza University of Rome, 00161 Rome, Italy; (R.P.); (M.S.); (G.M.); (A.P.); (A.M.); (A.B.)
| | - Marta Sacchetti
- Department of Sense Organs, Sapienza University of Rome, 00161 Rome, Italy; (R.P.); (M.S.); (G.M.); (A.P.); (A.M.); (A.B.)
| | - Giuseppe Magliulo
- Department of Sense Organs, Sapienza University of Rome, 00161 Rome, Italy; (R.P.); (M.S.); (G.M.); (A.P.); (A.M.); (A.B.)
| | - Andrea Maria Plateroti
- NESMOS Department, S. Andrea Hospital, Faculty of Medicine and Psychology, Sapienza University of Rome, 00189 Rome, Italy;
| | - Annalisa Pace
- Department of Sense Organs, Sapienza University of Rome, 00161 Rome, Italy; (R.P.); (M.S.); (G.M.); (A.P.); (A.M.); (A.B.)
| | - Antonietta Moramarco
- Department of Sense Organs, Sapienza University of Rome, 00161 Rome, Italy; (R.P.); (M.S.); (G.M.); (A.P.); (A.M.); (A.B.)
| | - Alessandro Lambiase
- Department of Sense Organs, Sapienza University of Rome, 00161 Rome, Italy; (R.P.); (M.S.); (G.M.); (A.P.); (A.M.); (A.B.)
- Correspondence: ; Tel.: +39-06-4997-5300
| | - Alice Bruscolini
- Department of Sense Organs, Sapienza University of Rome, 00161 Rome, Italy; (R.P.); (M.S.); (G.M.); (A.P.); (A.M.); (A.B.)
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Samuels TL, Zimmermann MT, Zeighami A, Demos W, Southwood JE, Blumin JH, Bock JM, Johnston N. RNA Sequencing Reveals Cancer-Associated Changes in Laryngeal Cells Exposed to Non-Acid Pepsin. Laryngoscope 2020; 131:121-129. [PMID: 32202667 DOI: 10.1002/lary.28636] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 02/07/2020] [Accepted: 02/25/2020] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Laryngopharyngeal reflux (LPR) is a common affliction that contributes to laryngeal inflammation, symptoms that impact quality of life, and life-threatening illnesses such as cancer. Effective treatment strategies for LPR are lacking. Pepsin is a proinflammatory and carcinogenic element of refluxate. Investigation of molecular pathways involved in pepsin-mediated damage may lead to identification of novel biomarkers and therapeutic targets for LPR. In this study, RNA sequencing was used to examine changes in human laryngeal epithelial cells following brief pepsin insult. Cells were immortalized to generate a model to aid future study of laryngeal injury and therapeutics. STUDY DESIGN In vitro translational. METHODS Laryngeal epithelial cells were cultured from a patient without signs or symptoms of LPR or laryngeal cancer. Cells were treated with 0.1 mg/ml pepsin for 1 hour or normal growth media (control) prior to RNA sequencing. Cells were immortalized via HPV E6/7 and characterized by microscopy, immunohistochemistry, G-banding, and soft agar assay. RESULTS Three hundred ninety-seven genes exhibited differences in expression with pepsin treatment (P < .05). Pathway analysis revealed association with cancer and related signaling processes including dysregulation of cancer-associated molecules, Metastasis-Associated Lung Adenocarcinoma Transcript 1 and KRT82, and the long-noncoding RNA, lipoprotein receptor-related protein 1 (LRP1)-AS, which regulates the putative pepsin receptor LRP1. CONCLUSIONS A single, brief exposure to pepsin activated cancer-associated signaling pathways in laryngeal cells in vitro, revealing novel mechanisms by which chronic reflux may contribute to carcinogenesis. The cell line developed herein represents a novel tool in which to investigate pepsin-dysregulated pathways identified by RNA sequencing and disparities of tumor proneness of laryngeal subsites. LEVEL OF EVIDENCE N/A Laryngoscope, 131:121-129, 2021.
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Affiliation(s)
- Tina L Samuels
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Michael T Zimmermann
- Bioinformatics Research and Development Laboratory, Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
- Clinical and Translational Science Institute, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Atefeh Zeighami
- Bioinformatics Research and Development Laboratory, Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Wendy Demos
- Bioinformatics Research and Development Laboratory, Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Jessica E Southwood
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Joel H Blumin
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Jonathan M Bock
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Nikki Johnston
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
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Danic Hadzibegovic A, Kozmar A, Hadzibegovic I, Prgomet D, Danic D. Influence of proton pump inhibitor therapy on occurrence of voice prosthesis complications. Eur Arch Otorhinolaryngol 2020; 277:1177-1184. [PMID: 31953634 DOI: 10.1007/s00405-020-05784-4] [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: 09/27/2019] [Accepted: 01/03/2020] [Indexed: 10/25/2022]
Abstract
PURPOSE It has been shown that the reflux of the gastric content to the proximal oesophagus influences incidence of voice prosthesis (VP) complications in laryngectomized patients. We conducted prospective randomised study to investigate the relationship between pepsin concentration in saliva and occurrence of VP complications before and after 3 months of proton pump inhibitor (PPI) therapy. METHODS 60 laryngectomized patients with VP and 30 controls were included in the study. Saliva samples were collected in the morning and concentration of pepsin were measured by Human Pepsin (PG) ELISA kit. Thirty-Four (57%) patients reported one or more VP complication and were randomised in two groups, with and without PPI therapy, 40 mg pantoprazole per day for 3 months. RESULTS Patients who had longer time since last VP change had higher incidence of periprosthetic and transprosthetic leakage and Candida colonisation. Pepsin was found in all saliva samples. Median saliva pepsin concentration level did not significantly differ between laryngectomized patients and control subjects, or between patients with and without VP complications, and there was no correlation between saliva pepsin concentration levels and type of VP complication. After 3 months therapy, there was no difference in median saliva pepsin level or incidence of VP complication between patients with and without PPI therapy. CONCLUSION Although reflux was proposed to be associated with VP complications and pepsin was proven as a most sensitive and specific marker of EER, we did not find any statistically significant correlation between pepsin levels and occurrence of VP complications. A 3 months 40 mg pantoprazole therapy was ineffective in reduction of VP complications in our study group.
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Affiliation(s)
- Ana Danic Hadzibegovic
- Clinical Department for Otorhinolaryngology and Head and Neck Surgery, University Hospital Centre Zagreb, Kišpatićeva 12, 10000, Zagreb, Croatia. .,Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia. .,Faculty of Dental Medicine and Health Care, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia.
| | - Ana Kozmar
- Department of Laboratory Diagnostics, University Hospital Center Zagreb, Zagreb, Croatia
| | - Irzal Hadzibegovic
- Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia.,Faculty of Dental Medicine and Health Care, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia.,Department for Cardiology, University Hospital Dubrava, Zagreb, Croatia.,Department for Internal Medicine, University Hospital Dubrava, Zagreb, Croatia
| | - Drago Prgomet
- Clinical Department for Otorhinolaryngology and Head and Neck Surgery, University Hospital Centre Zagreb, Kišpatićeva 12, 10000, Zagreb, Croatia.,School of Medicine, University Zagreb, Zagreb, Croatia
| | - Davorin Danic
- Faculty of Dental Medicine and Health Care, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
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Upendran Y, Leach ST, Singh H, McBride J, Thomas PS, Belessis Y, Krishnan U. Pepsin as a Marker of Reflux Aspiration in Children With Esophageal Atresia: A Pilot Study. Front Pediatr 2020; 8:94. [PMID: 32266182 PMCID: PMC7096381 DOI: 10.3389/fped.2020.00094] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 02/24/2020] [Indexed: 11/18/2022] Open
Abstract
Background: Reflux aspiration secondary to gastroesophageal reflux disease (GERD) is one of the causes of chronic gastrointestinal and respiratory morbidity in children with esophageal atresia (EA). Currently there are no simple, validated non-invasive tests for the diagnosis of reflux aspiration in children. Objectives: The aim of this pilot study was to investigate pepsin detected in exhaled breath condensate (EBC) and saliva as a potential non-invasive marker of reflux aspiration in children with EA. Methods: EBC and saliva samples were prospectively collected from children with EA aged between 5 and 18 years attending a multidisciplinary EA Clinic. Pepsin in the samples was assayed by two methods, a commercial lateral flow device, the Peptest™ and an enzyme-linked immunosorbent assay (ELISA) and correlated with validated gastrointestinal and respiratory symptom questionnaires and objective measures of GERD and respiratory function. Results: EBC were collected from 18 children with EA, 15/18 also provided salivary samples. Pepsin was not detected in any of the EBC samples using the Peptest™ and only 1/14 (7.1%) samples by the ELISA. However, pepsin was detected in 33 and 83% of saliva samples when analyzed with Peptest™ and the ELISA respectively. Salivary pepsin levels were significantly higher in children with reflux symptoms or wheeze. Pepsin was detected by the Peptest™ in the saliva of 5/5 (100%) children with histological evidence of reflux esophagitis compared with 0/2 (0%) in children with normal histology (p = 0.048). Conclusions: Salivary pepsin was detected in a large proportion of children with EA and was significantly associated with GERD symptoms or wheeze. The role of salivary pepsin as a potential non-invasive marker of reflux aspiration in children with EA needs further validation in future studies with larger cohorts.
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Affiliation(s)
- Yadhavan Upendran
- School of Women's and Children's Health, University of New South Wales, Sydney, NSW, Australia
| | - Steven T Leach
- School of Women's and Children's Health, University of New South Wales, Sydney, NSW, Australia
| | - Harveen Singh
- School of Women's and Children's Health, University of New South Wales, Sydney, NSW, Australia.,Department of Gastroenterology, Sydney Children's Hospital, Sydney, NSW, Australia
| | - James McBride
- Department of Respiratory Medicine, Sydney Children's Hospital, Sydney, NSW, Australia
| | - Paul S Thomas
- Department of Respiratory Medicine, Prince of Wales' Clinical School, Prince of Wales' Hospital, UNSW, Sydney, NSW, Australia
| | - Yvonne Belessis
- School of Women's and Children's Health, University of New South Wales, Sydney, NSW, Australia.,Department of Respiratory Medicine, Sydney Children's Hospital, Sydney, NSW, Australia
| | - Usha Krishnan
- School of Women's and Children's Health, University of New South Wales, Sydney, NSW, Australia.,Department of Gastroenterology, Sydney Children's Hospital, Sydney, NSW, Australia
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19
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Utilidad clínica de la determinación de pepsina en saliva en pacientes con tos crónica asociada a refujo. OPEN RESPIRATORY ARCHIVES 2020. [DOI: 10.1016/j.opresp.2019.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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20
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Tasli H, Eser B, Birkent H, Asik B, Gerek M. Investigation of Pepsin in Laryngeal Squamous Cell Carcinoma Specimens. DICLE MEDICAL JOURNAL 2019. [DOI: 10.5798/dicletip.661237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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A Multicentre Study in UK Voice Clinics Evaluating the Non-invasive Reflux Diagnostic Peptest in LPR Patients. ACTA ACUST UNITED AC 2019. [DOI: 10.1007/s42399-019-00184-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
AbstractQuestionnaires and invasive diagnostic tests are established for diagnosing gastro-esophageal reflux disease (GERD) but shown not to be sensitive or specific for diagnosing laryngopharyngeal reflux (LPR) where vast majority of reflux events are weakly acidic or non-acidic. The research question addressed in the current multicentre study was to determine if the measurement of salivary pepsin is a sensitive, specific and reliable diagnostic test for LPR. Five UK voice clinics recruited a total of 1011 patients presenting with symptoms of LPR and a small group of subjects (n = 22) recruited as asymptomatic control group. Twenty-six patients failed to provide demographic information; the total patient group was 985 providing 2927 salivary pepsin samples for analysis. Study participants provided 3 saliva samples, the first on rising with two samples provided post-prandial (60 min) or post-symptom (15 min). The control group provided one sample on rising and two post-prandial providing a total of 66 samples. Pepsin analysis was carried out using Peptest as previously described. High prevalence of pepsin in patient groups (75%) represents a mean pepsin concentration of 131 ng/ml. The greatest prevalence for pepsin was in the post-prandial sample (155 ng/ml) and the lowest in the morning sample (103 ng/ml). The mean pepsin concentration in the control group was 0 ng/ml. Patients across all 5 clinics showed high prevalence of salivary pepsin (ranging from 69 to 86%), and the overall sensitivity was 76.4% and specificity 100%. Pepsin was shown to be an ideal biomarker for detecting airway reflux and LPR.
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22
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Klimara MJ, Samuels TL, Johnston N, Chun RH, McCormick ME. Detection of Pepsin in Oral Secretions of Infants with and without Laryngomalacia. Ann Otol Rhinol Laryngol 2019; 129:224-229. [DOI: 10.1177/0003489419884332] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Objectives: Laryngomalacia is a common cause of stridor in infants and is associated with laryngopharyngeal reflux (LPR). Although pepsin in operative supraglottic lavage specimens is associated with severe laryngomalacia, detection of pepsin in oral secretions has not been demonstrated in an outpatient setting. Methods: Children <2 years old with laryngomalacia diagnosed by flexible laryngoscopy and children without stridor were selected. Oral secretion samples were obtained in clinic from all subjects. Pepsin, IL-1β, and IL-8 enzyme-linked immunosorbent assays were performed to determine presence of LPR. Results: Sixteen laryngomalacia and sixteen controls were enrolled. Pepsin was detected more frequently in oral secretions of patients with laryngomalacia (13/16) than in controls (2/16; P < .001). Four patients with laryngomalacia developed symptoms requiring supraglottoplasty. Presence and level of salivary pepsin was not significantly associated with need for surgical management, nor were the levels or presence of IL-1β or IL-8 significantly associated with presence or level of pepsin, diagnosis of laryngomalacia, or need for operative management. Conclusion: Pepsin in saliva appears to be associated with laryngomalacia, suggesting a role for salivary pepsin as a noninvasive marker of LPR in patients with laryngomalacia. Future studies will determine the utility of this test in laryngomalacia.
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Affiliation(s)
- Miles J. Klimara
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Tina L. Samuels
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Nikki Johnston
- Department of Otolaryngology and Communication Sciences and Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Robert H. Chun
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, WI, USA
- Division of Pediatric Otolaryngology, Children’s Hospital of Wisconsin, Milwaukee, WI, USA
| | - Michael E. McCormick
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, WI, USA
- Division of Pediatric Otolaryngology, Children’s Hospital of Wisconsin, Milwaukee, WI, USA
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23
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Pepsin Triggers Neutrophil Migration Across Acid Damaged Lung Epithelium. Sci Rep 2019; 9:13778. [PMID: 31551494 PMCID: PMC6760148 DOI: 10.1038/s41598-019-50360-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 09/09/2019] [Indexed: 12/13/2022] Open
Abstract
Pepsin represents a potential biomarker for extraesophageal reflux disease when detected in airways, however a direct role for pepsin in lung dysfunction has not been clearly established. Children experiencing gastroesophageal and extraesophageal reflux are often prescribed proton pump inhibitors (PPIs) to reduce gastric acid associated damage to esophageal and airway mucosa. The potential of pepsin and gastric fluid, from children that were either on or off PPI therapy, to cause inflammation and damage using a human in vitro co-culture model of the airway mucosa was evaluated herein. Exposure of the airway model to acidic solutions caused cellular damage and loss of viability, however, acid alone did not disrupt barrier integrity or instigate neutrophil trans-epithelial migration without pepsin. Gastric fluid from patients on PPI therapy exhibited only a slightly higher pH yet had significantly higher concentrations of pepsin and elicited more barrier disruption and neutrophil trans-epithelial migration compared to gastric fluid from patients off PPIs. Inflammatory and damaging responses observed with gastric fluid from patients on PPIs were largely driven by pepsin. These results indicate the potential for PPI usage to raise concentrations of pepsin in gastric fluid, which may enhance the pathological impact of micro-aspirations in children with extraesophageal reflux.
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24
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Does Pepsin Play a Role in Etiology of Laryngeal Nodules? J Voice 2019; 33:704-707. [DOI: 10.1016/j.jvoice.2018.04.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Accepted: 04/13/2018] [Indexed: 12/13/2022]
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25
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Borges LF, Chan WW, Carroll TL. Dual pH Probes Without Proximal Esophageal and Pharyngeal Impedance May Be Deficient in Diagnosing LPR. J Voice 2019; 33:697-703. [DOI: 10.1016/j.jvoice.2018.03.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 03/13/2018] [Indexed: 12/12/2022]
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26
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Bobin F, Journe F, Lechien JR. Saliva pepsin level of laryngopharyngeal reflux patients is not correlated with reflux episodes. Laryngoscope 2019; 130:1278-1281. [PMID: 31461170 DOI: 10.1002/lary.28260] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 06/11/2019] [Accepted: 08/09/2019] [Indexed: 12/13/2022]
Abstract
OBJECTIVE To investigate the relationship between the laryngopharyngeal reflux (LPR) episodes at the multichannel intraluminal impedance-pH monitoring (MII-pH) and the concentration of pepsin in the saliva of LPR patients. METHODS Patients with LPR were enrolled from the polyclinic of Poitiers, France. Patients benefited from 24-hour MII-pH that allowed a correlation study between reflux episodes and symptoms. Patients reported the occurrence of the critical symptoms during the testing period through a recording device. Simultaneously, they collected a first saliva sample 30 minutes after the symptoms and a second saliva collection a few hours after the first collection. The patient symptoms were assessed with reflux symptom score (RSS). The relationship between pepsin concentration in the saliva, symptoms, and the reflux episode characteristics at the MII-pH was investigated through multiple linear regression. RESULTS A total of 65 patients with LPR were recruited. The mean concentrations of the first and the second pepsin samples were 92.0 ± 108.1 and 101.8 ± 131.0, respectively. Peptest (RD Biomed, Milan, Italy) was positive in 51 LPR patients (78.5%). Concentrations of both pepsin samples were significantly correlated (P = 0.019). There was no significant association between pepsin concentrations in saliva samples, RSS, key symptoms during the test period, and MII-pH findings. CONCLUSION The level of pepsin saliva concentration is not associated with the reflux episodes at the MII-pH. Future studies are needed to better understand the relationship between the extracellular pepsin concentration, mucosal inflammation, and related laryngopharyngeal symptoms. LEVEL OF EVIDENCE 4 Laryngoscope, 130:1278-1281, 2020.
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Affiliation(s)
- Francois Bobin
- Research Committee of the Young-Otolaryngologists of the International Federation of Oto-rhino-laryngological Societies (YO-IFOS), Poitiers, France.,Department of Otorhinolaryngology and Head and Neck Surgery, Polyclinique de Poitiers, Poitiers, France
| | - Fabrice Journe
- Research Committee of the Young-Otolaryngologists of the International Federation of Oto-rhino-laryngological Societies (YO-IFOS), Poitiers, France.,Laboratory of Anatomy and Cell Biology, Faculty of Medicine, UMONS Research Institute for Health Sciences and Technology, Mons, Belgium
| | - Jérôme R Lechien
- Research Committee of the Young-Otolaryngologists of the International Federation of Oto-rhino-laryngological Societies (YO-IFOS), Poitiers, France.,Laboratory of Anatomy and Cell Biology, Faculty of Medicine, UMONS Research Institute for Health Sciences and Technology, Mons, Belgium.,Laboratory of Phonetics, Faculty of Psychology, Research Institute for Language Sciences and Technology, University of Mons (UMons), Mons, Belgium.,Department of Otorhinolaryngology and Head and Neck Surgery, CHU Saint-Pierre, Brussels, Belgium
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27
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Klimara MJ, Johnston N, Samuels TL, Visotcky AM, Poetker DM, Loehrl TA, Blumin JH, Bock JM. Correlation of salivary and nasal lavage pepsin with MII-pH testing. Laryngoscope 2019; 130:961-966. [PMID: 31329290 DOI: 10.1002/lary.28182] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 06/10/2019] [Accepted: 06/24/2019] [Indexed: 11/12/2022]
Abstract
OBJECTIVES Laryngopharyngeal reflux (LPR) is a common upper airway disease. Salivary pepsin is a proposed marker for LPR; however, the optimal time for collection of specimens for pepsin detection and pepsin's presence in the oral and nasal secretions relative to concurrent multichannel intraluminal impedance-pH (MII-pH) monitoring are unknown. STUDY DESIGN Prospective case-control study with an experimental design. METHODS Patients undergoing MII-pH testing for evaluation of LPR and asymptomatic control subjects were selected. Nasal lavage and saliva samples were collected in the clinic prior to MII-pH probe placement. Additional saliva samples were obtained an hour after each meal and upon waking the following morning. Nasal lavage and salivary pepsin were measured by ELISA. RESULTS Twenty-six patients undergoing MII-pH testing and 13 reflux-free control patients were enrolled. Salivary pepsin was detected in 11 of 26 patients with suspected LPR and 0 of 13 controls. Pepsin was most frequently detected in the specimen provided upon waking at an average concentration of 186.9 ng/mL. A significant correlation was observed between salivary pepsin in waking samples to MII-pH measurements, including reflux bolus duration, and proximal and distal recumbent reflux episodes (P < 0.05). A significant correlation was also observed between salivary pepsin upon waking or sinus lavage and reflux symptom index (P < 0.05). CONCLUSION Pepsin in salivary and nasal lavage samples demonstrated an association with MII-pH-documented LPR. Pepsin detection was most frequent in morning samples, supporting use of morning salivary pepsin levels as a potential noninvasive technique for LPR diagnosis. LEVEL OF EVIDENCE 2 Laryngoscope, 130:961-966, 2020.
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Affiliation(s)
- Miles J Klimara
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Nikki Johnston
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Tina L Samuels
- Institute for Health and Equity, Division of Biostatistics, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Alexis M Visotcky
- Institute for Health and Equity, Division of Biostatistics, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - David M Poetker
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Todd A Loehrl
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Joel H Blumin
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Jonathan M Bock
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
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28
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Laryngopharyngeal Reflux Diagnosis in Obstructive Sleep Apnea Patients Using the Pepsin Salivary Test. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16112056. [PMID: 31185704 PMCID: PMC6604010 DOI: 10.3390/ijerph16112056] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 06/05/2019] [Accepted: 06/06/2019] [Indexed: 12/12/2022]
Abstract
Background: To investigate the presence of laryngopharyngeal reflux in patients with obstructive sleep apnea (OSA) employing the salivary pepsin concentration method. To compare the results of pepsin concentration with the severity of the pathology. Methods: Seventy-five OSA patients (44 males, 31 females) were enrolled in the study. For each patient, the AHI (apnea–hypopnea index) and the BMI (body mass index) were initially evaluated. All the patients enrolled were assessed using the reflux symptom index (RSI) and the reflux finding score (RFS) in order to perform a clinical diagnosis of laryngopharyngeal reflux. In all patients a salivary sample was taken to estimate the presence of pepsin and its concentration. Results: The incidence of LPR (laryngopharyngeal reflux) in OSA patients, evaluated using the salivary pepsin concentration test (PEP-test), was found to be 32% of cases. Linear regression testing did not show any correlation between AHI and pepsin concentration in salivary samples (p = 0.1). Conclusion: A high number of patients with OSA seem to show positivity for salivary pepsin, correlated to an LPR. There does not appear to be a correlation between the severity of apnea and the grade of salivary pepsin reflux. On the other hand, direct correlation between BMI and the value of pepsin in salivary specimens was observed.
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29
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Marshall S, McCann AJ, Samuels TL, Blair A, Bonne V, Johnston N, Koufman J. Detection of pepsin and IL-8 in saliva of adult asthmatic patients. J Asthma Allergy 2019; 12:155-161. [PMID: 31213853 PMCID: PMC6549784 DOI: 10.2147/jaa.s205482] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 04/29/2019] [Indexed: 01/19/2023] Open
Abstract
Objective: Asthma and gastric reflux disease are widespread and often coexisting diseases with complex interactions, leading some to suspect that asthma symptoms of patients with reflux may improve with anti-reflux therapy. The objective of this study was to determine whether pepsin in saliva, indicative of airway reflux, could be detected in patients with asthma of varying severity and test the requirement of citric acid as a pepsin preservative. Methods: Saliva samples were collected in the clinic (with/without citric acid) and upon waking the following morning from 25 asthmatic patients. Enzyme-linked immunosorbent assay was performed for pepsin and interleukin-8 (IL-8), an inflammatory cytokine induced by pepsin in other airway epithelia. Pepsin induction of IL-8 was tested in a lung epithelial cell culture model. Results: Pepsin was detected in saliva from 14/25 patients (56%; mean concentration of pepsin in specimens where observed ±SD =80.3±87.5 ng/mL); significant agreement was found between samples collected in the presence/absence of citric acid. No significant associations were found with pepsin and clinical measures of asthma severity. IL-8 was detected in saliva from 22/25 patients (88%; mean IL-8 in all specimens where observed =3.27±3.91 ng/mL). IL-8 was significantly upregulated in human lung epithelial cells exposed to pepsin at pH7 in vitro (P=0.041). Conclusion: In summary, more than half of the asthma patients in this study were found to have pepsin in their saliva, indicative of airway reflux. These data support the use of salivary pepsin as a noninvasive tool for future investigation of airway reflux in a larger cohort. The data further suggest that collection in citric acid as a sample preservative is not warranted and that pooling of multiple saliva samples collected at various timepoints may improve sensitivity of pepsin detection and reduce costs incurred by multiple sample analysis in future studies.
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Affiliation(s)
- Samuel Marshall
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Alec J McCann
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Tina L Samuels
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Amy Blair
- Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Valerie Bonne
- Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Nikki Johnston
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, WI, USA
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, USA
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Tan JJ, Wang L, Mo TT, Wang J, Wang MG, Li XP. Pepsin promotes IL-8 signaling-induced epithelial-mesenchymal transition in laryngeal carcinoma. Cancer Cell Int 2019; 19:64. [PMID: 30936780 PMCID: PMC6425698 DOI: 10.1186/s12935-019-0772-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Accepted: 03/06/2019] [Indexed: 12/15/2022] Open
Abstract
Background Laryngopharyngeal reflux (LPR), with its increasing morbidity, is attracting considerable attention. In recent years, the causal role between LPR and laryngeal carcinoma has been debated. The main harmful component of LPR is pepsin, which has been shown to induce mucosal inflammation by damaging the mucous membrane. Thus, pepsin is linked to an increased risk of laryngeal carcinoma, although the potential mechanism remains largely unknown. Methods The human laryngeal carcinoma cell lines Hep-2 and Tu212 were exposed to different pepsin concentrations and the morphology, proliferation, migration, secretion of inflammatory cytokines, and epithelial–mesenchymal transition (EMT) of the cells were assessed. To evaluate whether interleukin-8 (IL-8) had a causal relationship with pepsin and EMT, an IL-8 inhibitor was used to suppress IL-8 secretion during pepsin exposure and the expression of EMT markers, cell proliferation, and migration were analyzed. Results Pepsin promoted proliferation, colony formation, migration, and IL-8 secretion of Hep-2 and Tu212 cells in vitro. Furthermore, increased pepsin concentrations changed the morphology of Hep-2 and Tu212 cells; levels of the epithelial marker E-cadherin were reduced and those of mesenchymal markers vimentin and β-catenin and the transcription factors snail and slug were elevated. A similar effect was observed in laryngeal carcinoma tissues using immunohistochemistry. IL-8 level was reduced and EMT was restored when pepsin was inhibited by pepstatin. EMT was weakened after exposure to the IL-8 inhibitor, with significant reduction in pepsin-induced cell proliferation and migration. Conclusions Pepsin may induce EMT in laryngeal carcinoma through the IL-8 signaling pathway, which indicates that it has potential role in enhancing cell proliferation and metastasis of laryngeal carcinoma. Electronic supplementary material The online version of this article (10.1186/s12935-019-0772-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jia-Jie Tan
- 1Department of Otolaryngology, Head and Neck Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, 510515 China
| | - Lu Wang
- 1Department of Otolaryngology, Head and Neck Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, 510515 China.,Department of Otolaryngology, Gaoyao District Traditional Chinese Medicine Hospital of Zhaoqing, No.3 of FuQian Avenue, Zhaoqing, 526100 Guangdong China
| | - Ting-Ting Mo
- 1Department of Otolaryngology, Head and Neck Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, 510515 China
| | - Jie Wang
- 1Department of Otolaryngology, Head and Neck Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, 510515 China
| | - Mei-Gui Wang
- 1Department of Otolaryngology, Head and Neck Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, 510515 China
| | - Xiang-Ping Li
- 1Department of Otolaryngology, Head and Neck Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, 510515 China
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McCann AJ, Samuels TL, Blumin JH, Johnston N. The role of pepsin in epithelia-mesenchymal transition in idiopathic subglottic stenosis. Laryngoscope 2019; 130:154-158. [PMID: 30776094 DOI: 10.1002/lary.27879] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 01/21/2019] [Accepted: 01/29/2019] [Indexed: 01/16/2023]
Abstract
OBJECTIVES Idiopathic subglottic stenosis (iSGS) is commonly characterized by laryngeal fibrosis thought to arise by epithelia-mesenchymal transition (EMT) induced by chronic inflammation. Pepsin is a potent inducer of inflammation in the airways during chronic laryngopharyngeal reflux and has been observed in the subglottic mucosa of patients with iSGS, absent in normal mucosa. The aim of this study was to examine the effect of pepsin on mechanisms of EMT in laryngeal cells with implications for iSGS. STUDY DESIGN In vitro translational research study. METHODS Human laryngeal epithelial cell cultures were exposed to 0.1 mg/mL or 1.0 mg/mL pepsin at pH7 for 24 and 48 hours, or media pH5 ± 0.1 mg/mL pepsin for 10 minutes and harvested after 24 and 48 hours. EMT marker expression was measured by qPCR and enzyme-linked immunosorbent assays. Wound-healing scratch assay was performed on immortalized human vocal fold fibroblasts pretreated with media pH5 ± 0.1 mg/mL pepsin (10 minutes) or continuously treated with media pH7 ± 0.1 to 1 mg/mL pepsin for 24 hours. RESULTS Pepsin yielded no effect on MMP1, MMP9, FN1, COL1A1, HAS2, or CDH1 gene expression or matrix metalloproteinase-9 or fibronectin protein expression, either alone or in the presence of weak acid. Pepsin and/or acid produced no effect on fibroblast migration. CONCLUSION Whereas pepsin has been shown to be present in the subglottic mucosa of patients with iSGS, this in vitro acute exposure investigation does not provide evidence of a direct causal role for development of fibrosis in subglottic epithelial cell cultures. LEVELS OF EVIDENCE NA. Laryngoscope, 130:154-158, 2020.
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Affiliation(s)
- Alec J McCann
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Tina L Samuels
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Joel H Blumin
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Nikki Johnston
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A.,Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
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32
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Wang CP, Wang CC, Lien HC, Lin WJ, Wu SH, Liang KL, Liu SA. Saliva Pepsin Detection and Proton Pump Inhibitor Response in Suspected Laryngopharyngeal Reflux. Laryngoscope 2018; 129:709-714. [PMID: 30247754 DOI: 10.1002/lary.27502] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/12/2018] [Indexed: 12/13/2022]
Abstract
OBJECTIVES/HYPOTHESIS To evaluate the prediction value of saliva pepsin detection for an 8-week proton pump inhibitor (PPI) response in patients with a Reflux Symptoms Index (RSI) score ≥13, which indicates possible laryngopharyngeal reflux. STUDY DESIGN Prospective individual single-cohort study. METHODS Patients were recruited who had experienced chronic laryngopharyngeal symptoms (RSI score ≥13) for more than 3 months after excluding other etiologies. The patients received PPI (40 mg of esomeprazole once daily) treatment for 8 weeks. Prior to treatment, the patients submitted saliva/sputum samples that were collected during the time symptoms were observed. The samples were taken for pepsin detection, and performed using the commercially available Peptest lateral flow device. The association of the Peptest results and PPI response were statistically analyzed with the χ2 test. RESULTS Seventy-four patients completed the study, and upon completion of PPI treatment, the mean RSI score was significantly reduced from 19.22 ± 5.18 to 8.99 ± 5.69. Forty-four (59.5%) patients exhibited a good response as defined by an RSI score reduction ≥50%. The results of the Peptest were semiquantitatively graded as 0, 1, 2, 3 (negative, weak positive, moderate positive and strong positive, respectively) based upon the visual intensity of the test sample line as compared to the control line. Twenty-four patients (32.4%) exhibited grade 3 strong positive results. The Peptest strong positive results (P < .05) were significantly associated with a good PPI response, with the positive predictive value being 79.2%. CONCLUSIONS Analysis of strong positive results for pepsin detection in saliva/sputum samples may be a useful, noninvasive method for predicting better PPI response in patients with suspected reflux induced chronic laryngopharyngeal symptoms. LEVEL OF EVIDENCE 2 Laryngoscope, 129:709-714, 2019.
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Affiliation(s)
- Ching-Ping Wang
- School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Department of Speech Language Pathology and Audiology, Chung Shan Medical University, Taichung, Taiwan.,Department of Otolaryngology-Head and Neck Surgery, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Chen-Chi Wang
- School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Department of Speech Language Pathology and Audiology, Chung Shan Medical University, Taichung, Taiwan.,Department of Otolaryngology-Head and Neck Surgery, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Han-Chung Lien
- School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Division of Gastroenterology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Wen-Jiun Lin
- Department of Otolaryngology-Head and Neck Surgery, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Shang-Heng Wu
- Department of Otolaryngology-Head and Neck Surgery, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Kai-Li Liang
- School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Department of Otolaryngology-Head and Neck Surgery, Taichung Veterans General Hospital, Taichung, Taiwan.,College of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Shih-An Liu
- School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Department of Otolaryngology-Head and Neck Surgery, Taichung Veterans General Hospital, Taichung, Taiwan
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Abstract
Exhaled breath condensate (EBC) is a promising source of biomarkers of lung disease. EBC research and utility has increased substantially over the past 2 decades. This review summarizes many of the factors regarding the composition of EBC, its collection, and analysis for the utility of both clinicians and researchers.
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Affiliation(s)
- Michael D Davis
- Division of Pulmonary Medicine, Children's Hospital of Richmond at VCU, Hermes A. Kontos Medical Sciences Building, Room 215, 1217 East Marshall Street, Richmond, VA 23298, USA.
| | - Alison J Montpetit
- VCU Medical Center, Department of Emergency Medicine, Box 980401, Richmond, VA 23298-0401, USA
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Mazzacane D, Damiani V, Silvestri M, Ciprandi G, Marino P. Eye reflux: an ocular extraesophageal manifestation of gastric reflux. Int J Ophthalmol 2018; 11:1503-1507. [PMID: 30225225 PMCID: PMC6133879 DOI: 10.18240/ijo.2018.09.12] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 03/23/2018] [Indexed: 02/08/2023] Open
Abstract
AIM To suspect laryngopharyngeal reflux (LPR) in patients with ocular surface disease (OSD). METHODS The present study evaluated a group of subjects with OSD assessing the Ocular Surface Disease Index (OSDI) and the Reflux Symptom Index (RSI) to detect patients with suspected LPR and define a possible relationship between tests. RESULTS Two hundred and ninety subjects (175 females, mean age: 60.41±15.68y) were consecutively visited at ophthalmologist offices. One hundred and one (34%) patients had pathological RSI (>13) and consequently a suspected LPR. CONCLUSION The current study shows that suspected LPR may be common (34%) in patients with OSD and a suspected LPR may be considered in OSD patients when RSI score is >13 and OSDI score is >42.
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Affiliation(s)
| | | | | | | | - Pierfranco Marino
- Dipartimento di Scienze della Salute, Università del Molise, Campobasso 86100, Italy
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35
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Assessment of the Acute Effects of Carbonated Beverage Consumption on Symptoms and Objective Markers of Gastric Reflux. GASTROINTESTINAL DISORDERS 2018. [DOI: 10.3390/gidisord1010004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Previous studies have suggested that carbonated beverages may cause gastro-oesophageal reflux. Pepsin (the major enzyme secreted by the stomach) has been suggested to be an objective, acute marker of a reflux event. This pilot study aimed to investigate whether intake of carbonated beverages could affect pepsin concentration in saliva or reflux symptoms. This was assessed by a randomised, crossover trial where participants consumed 330 mL of beverage (carbonated cola, degassed cola or water) at separate visits. Saliva samples and symptom questionnaires were collected at baseline and over the 30 min postprandial period. Pepsin was detected in all saliva samples. No difference was found in the salivary pepsin concentrations between treatments at all time points. There were significantly higher scores (p > 0.05) for feelings of fullness, heartburn, urge to belch and frequency of belches after ingestion of carbonated cola than degassed cola and water. The ingestion of carbonated beverages did not appear to increase postprandial pepsin concentration in saliva compared to other beverages but did evoke higher levels of reflux-related symptoms such as fullness, heartburn and belching. This suggests carbonated beverages may cause symptoms associated with reflux but do not drive detectable levels of gastric juice to reach the oral cavity.
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36
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Laryngopharyngeal Reflux: Current Concepts on Etiology and Pathophysiology and Its Role in Dysphagia. CURRENT OTORHINOLARYNGOLOGY REPORTS 2018. [DOI: 10.1007/s40136-018-0192-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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37
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Label-Free Detection of Salivary Pepsin Using Gold Nanoparticle/Polypyrrole Nanocoral Modified Screen-Printed Electrode. SENSORS 2018; 18:s18061685. [PMID: 29882917 PMCID: PMC6021850 DOI: 10.3390/s18061685] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 05/12/2018] [Accepted: 05/21/2018] [Indexed: 11/17/2022]
Abstract
Detection of salivary pepsin has been given attention as a new diagnostic tool for laryngopharyngeal reflux (LPR) disease, because saliva collection is non-invasive and relatively comfortable. In this study, we prepared polypyrrole nanocorals (PPNCs) on a screen-printed carbon electrode (SPCE) by a soft template synthesis method, using β-naphthalenesulfonic acid (NSA) (for short, PPNCs/SPCE). Gold nanoparticles (GNPs) were then decorated on PPNCs/SPCE by electrodeposition (for short, GNP/PPNCs/SPCE). To construct the immunosensor, pepsin antibody was immobilized on GNP/PPNCs/SPCE. Next, citric acid was applied to prevent non-specific binding and change the electrode surface charge before pepsin incubation. Electrochemical stepwise characterization was performed using cyclic voltammetry, and immunosensor response toward different pepsin concentrations was measured by differential pulsed voltammetry. As a result, our electrochemical immunosensor showed a sensitive detection performance toward pepsin with a linear range from 6.25 to 100 ng/mL and high specificity toward pepsin, as well as a low limit of detection of 2.2 ng/mL. Finally, we quantified the pepsin levels in saliva samples of LPR patients (n = 2), showing that the results were concordant with those of a conventional ELISA method. Therefore, we expect that this electrochemical immunosensor could be helpful for preliminarily diagnosing LPR through the detection of pepsin in saliva.
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Gong X, Wang XY, Yang L, Sun MJ, Du J, Zhang W. Detecting Laryngopharyngeal Reflux by Immunohistochemistry of Pepsin in the Biopsies of Vocal Fold Leukoplakia. J Voice 2018; 32:352-355. [DOI: 10.1016/j.jvoice.2017.06.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 06/13/2017] [Accepted: 06/19/2017] [Indexed: 10/19/2022]
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Kirti YK. Reflux Finding Score (RFS) a Quantitative Guide for Diagnosis and Treatment of Laryngopharyngeal Reflux. Indian J Otolaryngol Head Neck Surg 2018; 70:362-365. [PMID: 30211090 DOI: 10.1007/s12070-018-1350-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 04/06/2018] [Indexed: 12/11/2022] Open
Abstract
The study was under taken to know the prevalence of reflux signs in an individuals with throat complaints on the basis of reflux finding score (RFS) and quantitatively assess the effect of treatment. A cross-sectional study was done to evaluate the presence of laryngo-pharyngeal reflux signs in patients visiting ENT clinic with throat or voice problems in central India. There were 80 patients included in the study from 2017 to 2018 individuals. They were questioned regarding their symptoms. Their pharyngeal findings on rigid 70° laryngoscopy were viewed and RFS was made. The patients were reviewed at monthly intervals. Laryngopharyngeal reflux changes were seen in 36 of the 80 patients (45%). The reflux was graded as per the reflux finding score. The score ranged from 7 to maximum of 17 out of 26 in the patients with LPRD. Majority of the patients the score decreased with lifestyle changes and pantaprazole twice daily. There was poor response in 5% (4) patients, who were then advised to undergo upper gastro intestinal endoscopy for further assessment. Laryngopharyngeal reflux has become a very common entity in urban lifestyle. On careful examination the signs can be picked and assessed with the RFS, which is a very useful tool to grade and reassess patient on subsequent follow up.
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Affiliation(s)
- Y K Kirti
- Y K ENT Clinic, 132 C, Zone 1, Maharana Pratap Nagar, Bhopal, 462016 India
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40
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Vaezi MF, Sifrim D. Assessing Old and New Diagnostic Tests for Gastroesophageal Reflux Disease. Gastroenterology 2018; 154:289-301. [PMID: 28774844 DOI: 10.1053/j.gastro.2017.07.040] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 07/05/2017] [Accepted: 07/10/2017] [Indexed: 12/13/2022]
Abstract
A detailed critique of objective measurements of gastroesophageal reflux disease (GERD) would improve management of patients suspecting of having reflux, leading to rational selection of treatment and better outcomes. Many diagnostic tests for GERD have been developed over the past decades. We analyze their development, positive- and negative-predictive values, and ability to predict response to treatment. These features are important for development of medical, surgical, and endoscopic therapies for GERD. We discuss the value of available diagnostic tests and review their role in management of patients with persistent reflux symptoms despite adequate medical or surgical treatment. This is becoming a significant health economic problem, due to the widespread use of proton pump inhibitors. GERD is believed to cause nonesophageal symptoms, such as those provoked by ear, nose, throat, or respiratory disorders. We analyze the value of GERD diagnostic tests in evaluation of these troublesome, nonesophageal symptoms.
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Affiliation(s)
- Michael F Vaezi
- Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University Medical Center, Nashville, Tennessee.
| | - Daniel Sifrim
- Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
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41
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Pepsin in saliva as a diagnostic biomarker in laryngopharyngeal reflux: a meta-analysis. Eur Arch Otorhinolaryngol 2017; 275:671-678. [DOI: 10.1007/s00405-017-4845-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Accepted: 12/08/2017] [Indexed: 01/17/2023]
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42
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Wang J, Yu Z, Ren J, Xu Y, Zhang Y, Lei L, Zheng Y, Huang L, He Z. Effects of pepsin A on heat shock protein 70 response in laryngopharyngeal reflux patients with chronic rhinosinusitis. Acta Otolaryngol 2017; 137:1253-1259. [PMID: 28784015 DOI: 10.1080/00016489.2017.1360515] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVES We investigated the relationship between laryngopharyngeal reflux (LPR) and chronic rhinosinusitis (CRS), and explored the effects of pepsin A on the level of heat shock protein 70 (HSP70) in CRS. METHODS We included 23 CRS patients with nasal polyps (CRSwNP), 26 CRS patients without nasal polyps (CRSsNP) and nine normal controls to measure pepsin A levels in nasal secretions, blood plasma and nasal tissues, to measure HSP70 levels in nasal tissues, and to detect pepsinogen A, HSPA5, cyclo-oxygenase-2 (COX-2), and carbonic anhydrase III (CAIII) mRNA expression levels in nasal tissues. RESULTS Pepsin A levels in nasal secretions were significantly higher in CRSwNP/CRSsNP patients than in controls. HSP70 levels were significantly increased in pepsin A-positive turbinate mucosa compared to controls (p < .001). Similarly, HSP70 levels were significantly increased in pepsin A-positive polyp tissues than in pepsin A-negative polyp tissues (p = .016). Furthermore, no association was found between the presence of pepsin A and HSPA5, COX-2, and CAIII mRNA expression levels. CONCLUSIONS These results suggest that LPR may play a role in the development of CRS through pepsin A reflux, and increased HSP70 expression may be associated with the pathogenic mechanism of mucosal injury in CRS.
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Affiliation(s)
- Jing Wang
- Department of Oto-Rhino-Laryngology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
| | - Zhao Yu
- Department of Oto-Rhino-Laryngology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
| | - Jianjun Ren
- Department of Oto-Rhino-Laryngology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
| | - Yang Xu
- Department of Oto-Rhino-Laryngology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
| | - Yuke Zhang
- Department of Oto-Rhino-Laryngology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
| | - Lei Lei
- Department of Oto-Rhino-Laryngology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
| | - Yongbo Zheng
- Department of Oto-Rhino-Laryngology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
| | - Ligao Huang
- Department of Otolaryngology, Chengdu Renpin Otorhinolaryngological Hospital, Chengdu, Sichuan, China
| | - Zhaoping He
- Department of Biomedical Research, Nemours/Alfred I.duPont Hospital for Children, Wilmington, DE, USA
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43
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Carroll TL, Werner A, Nahikian K, Dezube A, Roth DF. Rethinking the laryngopharyngeal reflux treatment algorithm: Evaluating an alternate empiric dosing regimen and considering up-front, pH-impedance, and manometry testing to minimize cost in treating suspect laryngopharyngeal reflux disease. Laryngoscope 2017; 127 Suppl 6:S1-S13. [PMID: 28842999 DOI: 10.1002/lary.26806] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 06/22/2017] [Accepted: 06/27/2017] [Indexed: 01/06/2023]
Abstract
OBJECTIVES/HYPOTHESIS Empiric proton pump inhibitor (PPI) trials for laryngopharyngeal reflux (LPR) are common. A majority of the patients respond to acid suppression. This work intends to evaluate once-daily, 40 mg omeprazole and once-nightly, 300 mg ranitidine (QD/QHS) dosing as an alternative regimen, and use this study's cohort to evaluate empiric regimens prescribed for LPR as compared to up-front testing with pH impedance multichannel intraluminal impedance (MII) with dual pH probes and high-resolution manometry (HRM) for potential cost minimization. STUDY DESIGN Retrospective cohort review and cost minimization study. METHODS A chart review identified patients diagnosed with LPR. All subjects were treated sequentially and outcomes recorded. Initial QD/QHS dosing increased after 3 months to BID if no improvement and ultimately prescribed MII and HRM if they failed BID dosing. Decision tree diagrams were constructed to determine costs of two empiric regimens and up-front MII and HRM. RESULTS Ninety-seven subjects met the criteria. Responders and nonresponders to empiric therapy were identified. Seventy-two subjects (74%) responded. Forty-eight (67% of responders and 49% of all) improved with QD/QHS dosing. Forty-nine (51%) subjects escalated to BID dosing. Twenty-four subjects (33% of responders and 25% of all) improved on BID therapy. Twenty-five subjects (26%) did not respond to acid suppression. Average weighted cost was $1,897.00 per patient for up-front testing, $3,033.00 for initial BID, and $3,366.00 for initial QD/QHS. CONCLUSIONS An alternate QD/QHS regimen improved the majority who presented with presumed LPR. Cost estimates demonstrate that the QD/QHS regimen was more expensive than the initial BID high-dose PPI for 6 months. Overall per-patient cost appears less with up-front MII and HRM. LEVEL OF EVIDENCE 4. Laryngoscope, 127:S1-S13, 2017.
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Affiliation(s)
- Thomas L Carroll
- Department of Surgery, Division of Otolaryngology, Brigham and Women's Hospital, Boston, Massachusetts, U.S.A
- Department of Otolaryngology, Harvard Medical School, Boston, Massachusetts, U.S.A
| | | | | | - Aaron Dezube
- Tufts Medical School, Boston, Massachusetts, U.S.A
| | - Douglas F Roth
- Department of Otolaryngology, Tufts Medical Center, Boston, Massachusetts, U.S.A
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Luebke K, Samuels TL, Chelius TH, Sulman CG, McCormick ME, Kerschner JE, Johnston N, Chun RH. Pepsin as a biomarker for laryngopharyngeal reflux in children with laryngomalacia. Laryngoscope 2017; 127:2413-2417. [PMID: 28224634 DOI: 10.1002/lary.26537] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 01/17/2017] [Accepted: 01/23/2017] [Indexed: 11/08/2022]
Abstract
OBJECTIVES/HYPOTHESIS Laryngomalacia is a common cause of newborn stridor. Laryngopharyngeal reflux (LPR) has been associated with laryngomalacia. Although pepsin, a component of LPR, has been associated with inflammatory diseases of the aerodigestive tract, its presence in the airways of laryngomalacia patients is unknown. STUDY DESIGN Prospective case-control study comparing patients under age 3 years with laryngomalacia to children without laryngomalacia. METHODS Children less than 3 years old undergoing supraglottoplasty for laryngomalacia or surgery unrelated to the airway, without a history of laryngomalacia, reflux, or respiratory disease, were offered enrollment. Supraglottic lavage samples (3 mL) were obtained from all subjects. Two-millimeter arytenoid biopsies were collected from laryngomalacia patients. Pepsin Western blot and enzyme-linked immunosorbent assay were performed. RESULTS Ten laryngomalacia and five control subjects were enrolled. Pepsin was detected in lavages of laryngomalacia patients (8/10) but absent in controls (0/5; P = .007). Pepsin was observed more frequently in lavages (8/10) than biopsies (4/10; P = .046) of laryngomalacia subjects. Higher median pepsin concentration was observed in laryngomalacia than control lavages (P = .025). CONCLUSIONS Pepsin in supraglottic specimens demonstrated an association with laryngomalacia, supporting a role for refluxed pepsin in laryngomalacia. These data corroborate previous work implicating pepsin in inflammatory diseases of the upper airways. Further studies are warranted to investigate the contribution of pepsin to the pathophysiology of laryngomalacia. LEVEL OF EVIDENCE 3b. Laryngoscope, 127:2413-2417, 2017.
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Affiliation(s)
- Kendra Luebke
- Department of Otolaryngology, Children's Hospital of Wisconsin, Milwaukee, Wisconsin, U.S.A.,Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Tina L Samuels
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Thomas H Chelius
- Institute for Health and Society, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Cecille G Sulman
- Department of Otolaryngology, Children's Hospital of Wisconsin, Milwaukee, Wisconsin, U.S.A.,Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Michael E McCormick
- Department of Otolaryngology, Children's Hospital of Wisconsin, Milwaukee, Wisconsin, U.S.A.,Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Joseph E Kerschner
- Department of Otolaryngology, Children's Hospital of Wisconsin, Milwaukee, Wisconsin, U.S.A.,Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Nikki Johnston
- Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
| | - Robert H Chun
- Department of Otolaryngology, Children's Hospital of Wisconsin, Milwaukee, Wisconsin, U.S.A.,Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A
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Fortunato JE, D'Agostino RB, Lively MO. Pepsin in saliva as a biomarker for oropharyngeal reflux compared with 24-hour esophageal impedance/pH monitoring in pediatric patients. Neurogastroenterol Motil 2017; 29. [PMID: 27604397 DOI: 10.1111/nmo.12936] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 08/06/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND Pepsin in saliva is a proposed biomarker for oropharyngeal reflux. Pepsin may be prevalent in saliva from subjects with gastro-esophageal reflux and may correlate with proximal reflux by intraluminal impedance/pH monitoring (MII/pH). METHODS Patients (3 days to 17.6 years, n=90) undergoing 24-hour MII/pH monitoring and asymptomatic controls (2 months to 13.7 years, n=43) were included. Salivary pepsin was determined using a pepsin enzyme-linked immunosorbent assay. Eight saliva samples were collected from patients undergoing 24-hr MII/pH: (i) before catheter placement, (ii) before and 30 minutes after each of three meals, and (iii) upon awakening. One sample was collected from each control. KEY RESULTS In MII/pH subjects, 85.6% (77/90) had at least one pepsin-positive sample compared with 9.3% (4/43) in controls. The range of pepsin observed in individual subjects varied widely over 24 hours. The average pepsin concentration in all samples obtained within 2 hours following the most recent reflux event was 30.7±135 ng/mL, decreasing to 16.5±39.1 ng/mL in samples collected more than 2 hours later. The frequency of pepsin-positive samples correlated significantly with symptom index (rS =0.332, P=.0014), proximal (rS =0.340, P=.0010), and distal (rS =0.272, P=.0095) MII events. CONCLUSIONS & INFERENCES Concentration of salivary pepsin may not be an accurate measure of severity of reflux because of the wide range observed in individuals over 24 hours. Saliva samples must be obtained soon after a reflux event. Defining a regimen for optimal saliva collection may help to achieve the goal of using salivary pepsin as a biomarker for oropharyngeal reflux. CLINICAL TRIAL REGISTRY NCT01091805.
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Affiliation(s)
- J E Fortunato
- Section of Pediatric Gastroenterology, Hepatology and Nutrition, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
| | - R B D'Agostino
- Department of Biostatistical Sciences, Public Health Sciences, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - M O Lively
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, NC, USA
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Akst LM, Haque OJ, Clarke JO, Hillel AT, Best SR, Altman KW. The Changing Impact of Gastroesophageal Reflux Disease in Clinical Practice. Ann Otol Rhinol Laryngol 2017; 126:229-235. [DOI: 10.1177/0003489416686586] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Objectives: The National Ambulatory Medical Care Survey (NAMCS) database was utilized to understand evolving national trends in diagnosis and management of reflux. Methods: The NAMCS database was queried for visits related to gastroesophageal reflux diagnosis and management. Analysis performed for time periods 1998-2001, 2002-2005, and 2006-2009 was weighted to provide national estimates of care. Results were compared to previously reported time periods from 1990 to 2001 to evaluate patterns in overall visits, age and ethnicity of patients, provider type, and prescriptions provided. Results: The number of ambulatory visits for reflux increased from 8 684 000 in 1998-2001 to 15 750 000 in 2006-2009. Visits increased across each time period for internal medicine, family, and gastroenterology physicians. Among otolaryngologists, absolute visits increased from 1998-2001 to 2002-2005 but decreased in 2006-2009; difference between these time periods did not reach statistical significance. From 1998-2001 to 2006-2009, reflux medication use increased 233%, with continuing trends toward increased proton pump inhibitor use. Conclusions: Reflux visits have increased across all demographic subgroups studied. Knowledge of these trends may inform further paradigm shifts in diagnosis and management of reflux.
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Affiliation(s)
- Lee M. Akst
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | - John O. Clarke
- Department of Medicine, Division of Gastroenterology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Alexander T. Hillel
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Simon R.A. Best
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Kenneth W. Altman
- Department of Otolaryngology-Head & Neck Surgery, Baylor College of Medicine, Houston, Texas, USA
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Combined Multichannel Intraluminal Impedance and pH Measurement in Detecting Gastroesophageal Reflux Disease in Children. J Pediatr Gastroenterol Nutr 2016; 63:e98-e106. [PMID: 27574881 DOI: 10.1097/mpg.0000000000001396] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
OBJECTIVE The aim of the study was to evaluate and compare multichannel intraluminal impedance-pH (MII-pH) monitoring with standard investigations including pH testing for detecting gastroesophageal reflux disease (GERD) in children. METHODS A retrospective review of all MII-pH studies performed between July 2007 and March 2013 at Sydney Children's Hospital. Results from MII-pH testing, esophagogastroduodenoscopy (EGD), barium meal and pepsin assay, symptoms, underlying comorbidities, age, and medication usage were evaluated. RESULTS An additional 47.18% of children had GERD detected by MII-pH testing, which would have been missed by pH testing alone. Based on symptomatology, 50.49% of children with respiratory symptoms as a result of GERD and 47.54% of those with gastrointestinal symptoms would have been missed by pH testing alone. GERD was detected in an additional 39.47% of children with neurological impairment, 44.44% for those with cystic fibrosis, and 52.17% for those with esophageal atresia-tracheoesophageal fistula by MII-pH. In patients with persistent symptoms on anti-reflux medication, GERD would have been missed by pH testing alone in 50.40%. GERD was detected in an additional 62.79% of infants and 42.76% of older children by MII-pH compared with pH testing alone. With reference to MII-pH, the sensitivity of other standard investigations, pH testing (32.35%), barium meal (25.00%), EGD (45.26%), and pepsin assay (48.89%) was significantly lower in the detection of GERD in children. Of all abnormal MII-pH results, 51.1% were abnormal because of symptom association alone. CONCLUSIONS Combined MII-pH testing is superior to standard investigations such as 24-hour pH testing, barium meal, EGD, and pepsin assay in detecting GERD in children, particular because of its ability to associate symptoms with acid and non-acid reflux events.
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Pomari C, Mauroner L, Paiano S, Assante LR, Bertolaccini L, Ruffo G, Mainardi P, Bocus P, Geccherle A, Albanese SI, Ciaffoni S. Bronchial reacutization and gastroesophageal reflux: is there a potential clinical correlation? ANNALS OF TRANSLATIONAL MEDICINE 2016; 4:304. [PMID: 27668224 DOI: 10.21037/atm.2016.08.40] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Pepsin plays a role in gastroesophageal reflux (GER). Aims of this study were to verify if pepsin could be the cause of frequent bronchial exacerbations and to check if the persistence of chronic respiratory symptoms were correlated with pre-existing respiratory diseases. METHODS From January to May 2016, 42 patients underwent a diagnostic bronchoscopy. All patients had a history of at least one bronchial exacerbation during the previous year. Bronchial lavage fluid specimens were obtained. A semiquantitative assessment of pepsin in the samples was carried out based on the intensity of the test sample. RESULTS Pepsin was present in 37 patients (88%), but in patients with bronchial asthma and chronic obstructive pulmonary disease (COPD), the finding of pepsin in the bronchoalveolar fluid was 100%. There was a strong positive statistical correlation between pepsin detection and radiological signs of GER (ρ=0.662), and between pepsin detection and diagnosis (ρ=0.682). No correlation was found between the bacteriology and the presence of pepsin in the airways (ρ=0.006). CONCLUSIONS The presence of pepsin in the airways shows the occurrence of reflux. The persistence of respiratory symptoms by at least 2 months suggest an endoscopic bronchial examination. This straightforward test confirms the cause possible irritation of the airways and may prevent further diagnostic tests, such as an EGD or pH monitoring esophageal.
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Affiliation(s)
- Carlo Pomari
- Thoracic Endoscopy Unit, Sacro Cuore Don Calabria Hospital - Cancer Care Center, Negrar Verona, Italy
| | - Luisa Mauroner
- Laboratory Unit, Sacro Cuore Don Calabria Hospital - Cancer Care Center, Negrar Verona, Italy
| | - Simona Paiano
- Thoracic Endoscopy Unit, Sacro Cuore Don Calabria Hospital - Cancer Care Center, Negrar Verona, Italy
| | - Luca Rosario Assante
- Thoracic Endoscopy Unit, Sacro Cuore Don Calabria Hospital - Cancer Care Center, Negrar Verona, Italy
| | - Luca Bertolaccini
- Thoracic Surgery Unit, Sacro Cuore Don Calabria Hospital - Cancer Care Center, Negrar Verona, Italy
| | - Giacomo Ruffo
- Division of General Surgery, Sacro Cuore Don Calabria Hospital - Cancer Care Center, Negrar Verona, Italy
| | - Paride Mainardi
- Radiological Department, Sacro Cuore Don Calabria Hospital - Cancer Care Center, Negrar Verona, Italy
| | - Paolo Bocus
- Digestive Endoscopy Unit, Sacro Cuore Don Calabria Hospital - Cancer Care Center, Negrar Verona, Italy
| | - Andrea Geccherle
- Intestinal Bowel Disease Unit, Sacro Cuore Don Calabria Hospital - Cancer Care Center, Negrar Verona, Italy
| | - Sergio Ivan Albanese
- Otolaryngology-Head and Neck Surgery, Sacro Cuore Don Calabria Hospital - Cancer Care Center, Negrar Verona, Italy
| | - Stefano Ciaffoni
- Laboratory Unit, Sacro Cuore Don Calabria Hospital - Cancer Care Center, Negrar Verona, Italy
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Carroll TL, Nahikian K, Asban A, Wiener D. Nissen Fundoplication for Laryngopharyngeal Reflux After Patient Selection Using Dual pH, Full Column Impedance Testing. Ann Otol Rhinol Laryngol 2016; 125:722-8. [DOI: 10.1177/0003489416649974] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Objectives: Prior studies demonstrate inconsistent diagnostic strategies for laryngopharyngeal reflux disease (LPR) patients who are offered laparoscopic Nissen fundoplication (Nissen). Superior symptom resolution outcomes are demonstrated in patients with accompanying typical gastroesophageal reflux (GERD) symptoms. This study aims to evaluate the efficacy of selecting patients with LPR complaints for Nissen using full column, dual pH impedance catheters (multichannel intraluminal impedance catheters [MII]). Methods: All patients who underwent Nissen for management of LPR symptoms refractory to at least 3 months of twice daily (BID) proton pump inhibitor (PPI) therapy with reflux symptom index (RSI) of 13 or higher and who had demonstrable reflux on MII were included. Pre- and (minimum) 16 week post-Nissen RSI scores as well as LPR-specific complaints were collected. Results: Eleven patients met criteria. Nine subjects (5 female, 4 male) had complete data. All 9 (100%) achieved improvement in RSI. The average pre-Nissen RSI was 31.7, and average post-Nissen RSI was 10 ( P < .001). Six (67%) subjects dropped below an RSI of 13. Seven subjects (78%) had resolution of their primary LPR symptom, and 6 (67%) subjects had resolution of all LPR symptoms. Conclusions: Patients with LPR who are selected using dual pH and full column impedance are likely to demonstrate improvement in RSI following Nissen.
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Affiliation(s)
| | - Kael Nahikian
- Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Ammar Asban
- University of California San Francisco, California, USA
| | - Daniel Wiener
- Brigham and Women’s Hospital, Boston, Massachusetts, USA
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50
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Johnston N, Ondrey F, Rosen R, Hurley BP, Gould J, Allen J, DelGaudio J, Altman KW. Airway reflux. Ann N Y Acad Sci 2016; 1381:5-13. [PMID: 27310222 DOI: 10.1111/nyas.13080] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An ever-increasing number of adult and pediatric disorders have been shown to be influenced or caused by airway reflux. This has become a controversial and complicated aspect of medicine that requires a multidisciplinary approach. Evidence indicates that it is not only the acidic components of gastric refluxate that injure extraesophageal tissues but also the nonacidic components, such as pepsin and bile. There is a realization that proton pump inhibitors will not be effective when nonacidic components of refluxate are causing the problem. New in vitro and in vivo models for the study of airway reflux and new therapeutic and surgical approaches are discussed in this review article.
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Affiliation(s)
- Nikki Johnston
- Departments of Otolaryngology and Communication Sciences, and Microbiology and Molecular Genetics, Medical College of Wisconsin, Milwaukee, Wisconsin.
| | - Frank Ondrey
- Department of Otolaryngology and Masonic Cancer Center, University of Minnesota School of Medicine, Duluth, Minnesota
| | - Rachel Rosen
- Department of Gastroenterology and Nutrition, Boston's Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Bryan P Hurley
- Department of Pediatrics, Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts
| | - Jon Gould
- Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Jacquie Allen
- Department of Surgery, University of Auckland, Auckland, New Zealand
| | - John DelGaudio
- Department of Otolaryngology, Emory University, Atlanta, Georgia
| | - Kenneth W Altman
- Department of Otolaryngology - Head & Neck Surgery, Baylor College of Medicine, Houston, Texas
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