1
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Pavić I, Karačić DE, Hojsak I. Bronchoalveolar lavage cytology in children with chronic unexplained cough and severely neurologically impaired children. Lab Med 2024; 55:20-26. [PMID: 37078851 DOI: 10.1093/labmed/lmad028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2023] Open
Abstract
OBJECTIVE We aimed to compare the cellular composition of bronchoalveolar lavage (BAL) fluids in children with chronic unexplained cough (group 1) and severely neurologically impaired children with chronic or recurrent respiratory problems (group 2) with the BAL cytology of children without pulmonary or systemic diseases (group 3). METHODS Bronchoscopy with BAL fluid analysis was performed in all subjects. Children with respiratory symptoms underwent 24-hour multichannel intraluminal impedance monitoring. RESULTS A significant difference was found between the groups in the total number of cells in BAL fluid cytology (191 [range, 24-12,747], 747 [range, 53-13,000], and 105 [range, 41-233] cells/μL, P = .015), in the percentage of neutrophils (21.2 [SD = 32.4], 49.4 [SD = 36.6], and 3.6 [SD = 2.4], P < .001), and in the percentage of lipid-laden macrophages (10.3 [SD = 11.4], 13.7 [SD = 15.8] and 0.44 [SD = 1.0], P < .001). CONCLUSION The BAL fluid cytology provides useful data for determining the cause of chronic unexplained cough and chronic or recurrent respiratory problems in severely neurologically impaired children.
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Affiliation(s)
- Ivan Pavić
- Departments of Pulmonology, Allergology and Immunology, Children's Hospital Zagreb, Zagreb, Croatia
- University of Split School of Medicine, Split, Croatia
| | | | - Iva Hojsak
- Referral Center for Pediatric Gastroenterology and Nutrition, Children's Hospital Zagreb, Zagreb, Croatia
- University of Zagreb School of Medicine, Zagreb, Croatia
- University J.J. Strossmayer School of Medicine Osijek, Osijek, Croatia
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2
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Rice AJ. Non-neoplastic respiratory fluid cytology including cell differential counts for interstitial lung disease. Cytopathology 2021; 33:44-56. [PMID: 34628692 DOI: 10.1111/cyt.13067] [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: 04/22/2021] [Revised: 10/05/2021] [Accepted: 10/07/2021] [Indexed: 12/23/2022]
Abstract
Bronchioloalveolar lavage (BAL) is a non-invasive and well-tolerated procedure that plays a key role in the diagnosis of a variety of non-neoplastic pulmonary diseases, including acute respiratory failure, infection, diffuse parenchymal lung disease (DLPD), paediatric and occupational lung disease, and in the evaluation of the lung allograft. A variety of analytic techniques are commonly performed on BAL fluid, including cytology, cell differential count, microbiology and virology, as well as a number of additional techniques in specific circumstances.
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Affiliation(s)
- Alexandra J Rice
- Department of Histopathology, Royal Brompton Hospital, London, UK
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3
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Dong J, Huang J, Liu J, Tang Y, Sivapalan D, Lai K, Zhong N, Luo W, Chen R. Limited Clinical Utility of Lipid-Laden Macrophage Index of Induced Sputum in Predicting Gastroesophageal Reflux-Related Cough. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2021; 13:799-807. [PMID: 34486263 PMCID: PMC8419643 DOI: 10.4168/aair.2021.13.5.799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 02/14/2021] [Accepted: 02/23/2021] [Indexed: 11/20/2022]
Abstract
Gastroesophageal reflux disease (GERD) is a common cause of chronic cough (CC). However, the diagnosis of GERD associated with CC based on 24-hour esophageal pH-monitoring or favorable response to empirical anti-reflux trials is invasive and time-consuming. Lipid-laden macrophages (LLMs) are supposed to be a biomarker for micro-aspiration of gastric content in the respiratory tract. This study was conducted to collect LLMs by the sputum induction technique and observe the relationship among the amount of LLMs, cough severity, parameters of 24-hour esophageal pH-monitoring and therapeutic response. The 24-hour esophageal pH-monitoring and sputum induction were performed on 57 patients with suspected GERD associated with CC. Thirty-four patients were followed up after empirical anti-reflux trials of 8 weeks to record the therapeutic response. Lipid-laden macrophage index (LLMI), a semiquantitative counting of LLMs, showed no significant correlation with the values of 24-hour esophageal pH monitoring at the proximal or remote electrode. No difference in LLMI or DeMeester score, as well as cough symptom association probability, were found between the responders and the non-responders. Reflux symptoms were more common in the responders (50%) compared to the non-responders (6%) (P < 0.05). Our study suggests that LLMI shows limited utility in clinically diagnosing GERD associated with CC as an underlying etiology or in predicting response to anti-reflux therapy. Anti-reflux therapy is more effective for CC patients with reflux symptoms than for those without.
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Affiliation(s)
- Junguo Dong
- Department of Allergy and Clinical Immunology, State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.,Nanshan School of Medicine, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Junfeng Huang
- Department of Allergy and Clinical Immunology, State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.,Nanshan School of Medicine, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jiaxing Liu
- Department of Allergy and Clinical Immunology, State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Yufang Tang
- Department of Allergy and Clinical Immunology, State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Dhinesan Sivapalan
- International College of Education, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Kefang Lai
- Department of Allergy and Clinical Immunology, State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Nanshan Zhong
- Department of Allergy and Clinical Immunology, State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Wei Luo
- Department of Allergy and Clinical Immunology, State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
| | - Ruchong Chen
- Department of Allergy and Clinical Immunology, State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
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4
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Mahoney LB, Esther CR, May K, Rosen R. Metabolomic profiling of extraesophageal reflux disease in children. Clin Transl Sci 2021; 14:2025-2033. [PMID: 34058076 PMCID: PMC8504841 DOI: 10.1111/cts.13064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 03/30/2021] [Accepted: 04/12/2021] [Indexed: 11/29/2022] Open
Abstract
Although respiratory symptoms in children are often attributed to gastroesophageal reflux disease, establishing a clear diagnosis of extraesophageal reflux disease (EERD) can be challenging, as there are no sensitive or specific EERD biomarkers. The aim of this study was to evaluate the metabolite profile in bronchoalveolar (BAL) fluid from children with suspected EERD and assess the impact of reflux treatment on these metabolites. In this prospective pilot study, we performed nontargeted global metabolomic profiling on BAL fluid from 43 children undergoing testing with bronchoscopy, upper endoscopy, and multichannel intraluminal impedance with pH (pH-MII) for evaluation of chronic respiratory symptoms. Twenty-three (54%) patients had an abnormal pH-MII study. Seventeen (40%) patients were on proton pump inhibitors (PPIs) for testing. Levels of histamine, malate, adenosine 5'-monophosphate, and ascorbate were significantly lower in subjects with abnormal pH-MII studies compared to those normal studies. Furthermore, in children off PPI therapy, those with abnormal pH-MII studies had robust increases in a number of glycerophospholipids within phospholipid metabolic pathways, including derivatives of glycerophosphorylcholine, glycerophosphoglycerol, and glycerophosphoinositol, compared to those with normal pH-MII studies. These findings offer insight into the impact of reflux and PPIs on the lungs and provide a foundation for future studies using targeted metabolomic analysis to identify potential biomarkers of EERD.
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Affiliation(s)
- Lisa B Mahoney
- Aerodigestive Center, Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Charles R Esther
- Pediatric Pulmonology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Kara May
- Aerodigestive Center, Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Rachel Rosen
- Aerodigestive Center, Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, Massachusetts, USA
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5
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Goussard P, Pohunek P, Eber E, Midulla F, Di Mattia G, Merven M, Janson JT. Pediatric bronchoscopy: recent advances and clinical challenges. Expert Rev Respir Med 2021; 15:453-475. [PMID: 33512252 DOI: 10.1080/17476348.2021.1882854] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Introduction: During the last 40 years equipment has been improved with smaller instruments and sufficient size working channels. This has ensured that bronchoscopy offers therapeutic and interventional options.Areas covered: We provide a review of recent advances and clinical challenges in pediatric bronchoscopy. This includes single-use bronchoscopes, endobronchial ultrasound, and cryoprobe. Bronchoscopy in persistent preschool wheezing and asthma is included. The indications for interventional bronchoscopy have amplified and included balloon dilatation, endoscopic intubation, the use of airway stents, whole lung lavage, closing of fistulas and air leak, as well as an update on removal of foreign bodies. Others include the use of laser and microdebrider in airway surgery. Experience with bronchoscope during the COVID-19 pandemic has been included in this review. PubMed was searched for articles on pediatric bronchoscopy, including rigid bronchoscopy as well as interventional bronchoscopy with a focus on reviewing literature in the past 5 years.Expert opinion: As the proficiency of pediatric interventional pulmonologists continues to grow more interventions are being performed. There is a scarcity of published evidence in this field. Courses for pediatric interventional bronchoscopy need to be developed. The COVID-19 experience resulted in safer bronchoscopy practice for all involved.
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Affiliation(s)
- P Goussard
- Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg Hospital, Cape Town, South Africa
| | - P Pohunek
- Division of Pediatric Respiratory Diseases, Pediatric Department, 2nd Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic
| | - E Eber
- Department of Paediatrics and Adolescent Medicine, Head, Division of Paediatric Pulmonology and Allergology, Medical University of Graz, Graz, Austria
| | - F Midulla
- Department of Maternal Infantile and Urological Sciences, "Sapienza" University of Rome, Rome, Italy
| | - G Di Mattia
- Department of Maternal Infantile and Urological Sciences, "Sapienza" University of Rome, Rome, Italy
| | - M Merven
- Department Otorhinolaryngology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg Hospital, Cape Town, South Africa
| | - J T Janson
- Department of Surgical Sciences, Division of Cardio-Thoracic Surgery, Stellenbosch University, and Tygerberg Hospital, Tygerberg, South Africa
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6
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Wang Z, Bonella F, Li W, Boerner EB, Guo Q, Kong X, Zhang X, Costabel U, Kreuter M. Gastroesophageal Reflux Disease in Idiopathic Pulmonary Fibrosis: Uncertainties and Controversies. Respiration 2018; 96:571-587. [PMID: 30308515 DOI: 10.1159/000492336] [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] [Received: 04/12/2018] [Accepted: 07/23/2018] [Indexed: 11/19/2022] Open
Abstract
The mechanisms of idiopathic pulmonary fibrosis (IPF), a rare, devastating disease with a median survival of 3-5 years, are not fully understood. Gastroesophageal reflux disease (GERD) is a frequent comorbidity encountered in IPF. Hypothetically, GERD-associated microaspiration may lead to persistent inflammation impairing lung infrastructure, thereby possibly accelerating the progression of IPF. IPF may increase intrathoracic pressure, which can aggravate GERD and vice versa. On the basis of the possible beneficial effects of antireflux or antacid therapy on lung function, acute exacerbation, and survival, the recent international IPF guideline recommends antacid therapies for patients with IPF, regardless of symptomatic GERD. However, due to newer conflicting data, several national guidelines do not support this recommendation. Elucidation of these questions by further clinical and bench-to-bedside research may provide us with rational clinical diagnostic and therapeutic approaches concerning GERD in IPF. The present review aims to discuss the latest data on the controversial association of IPF and GERD.
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Affiliation(s)
- Zheng Wang
- Department of Respiratory and Critical Medicine, Zhengzhou University People's Hospital, The Provincial People's Hospital Affiliated to Henan University, Zhengzhou,
| | - Francesco Bonella
- Interstitial and Rare Lung Disease Unit, Ruhrlandklinik, University Hospital, Duisburg-Essen University, Essen, Germany
| | - Wenting Li
- Third Liver Unit, Department of Infectious Diseases and Hepatology, Anhui Provincial Hospital, the First Affiliated Hospital of University of Science and Technology of China, Hefei, China
| | - Eda B Boerner
- Interstitial and Rare Lung Disease Unit, Ruhrlandklinik, University Hospital, Duisburg-Essen University, Essen, Germany
| | - Qiongya Guo
- Department of Digestive Diseases, Zhengzhou University People's Hospital, The Provincial People's Hospital Affiliated to Henan University, Zhengzhou, China
| | - Xianglong Kong
- Department of Respiratory Medicine, The First Hospital of Changsha, Changsha, China
| | - Xiaoju Zhang
- Department of Respiratory and Critical Medicine, Zhengzhou University People's Hospital, The Provincial People's Hospital Affiliated to Henan University, Zhengzhou, China
| | - Ulrich Costabel
- Interstitial and Rare Lung Disease Unit, Ruhrlandklinik, University Hospital, Duisburg-Essen University, Essen, Germany
| | - Michael Kreuter
- Center for Interstitial and Rare Lung Diseases, Pneumology and Respiratory Critical Care Medicine, Thoraxklinik, University of Heidelberg and Translational Lung Research Center Heidelberg, member of the German Center for Lung Research, Heidelberg, Germany
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7
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Perotin JM, Launois C, Dewolf M, Dumazet A, Dury S, Lebargy F, Dormoy V, Deslee G. Managing patients with chronic cough: challenges and solutions. Ther Clin Risk Manag 2018; 14:1041-1051. [PMID: 29922064 PMCID: PMC5995432 DOI: 10.2147/tcrm.s136036] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Chronic cough is a common complaint and a frequent cause of medical consultation. Its management can be difficult. We present here an overview of the current guidelines for the management of chronic cough. Different steps are detailed, including the initial research of an obvious etiology and alert signs that should lead to further investigation of underlying condition. The diagnosis of the most frequent causes: asthma, non-asthmatic eosinophilic bronchitis, gastroesophageal reflux disease and upper airway cough syndrome should be considered, assessed and treated accordingly. Recent advances have been made in the comprehension of refractory chronic cough pathophysiology as well as its pharmacologic and non-pharmacologic treatment, especially speech pathology therapy.
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Affiliation(s)
- Jeanne-Marie Perotin
- Department of Respiratory Diseases, University Hospital of Reims, Reims, France.,INSERM UMRS 1250, University Hospital of Reims, Reims, France
| | - Claire Launois
- Department of Respiratory Diseases, University Hospital of Reims, Reims, France
| | - Maxime Dewolf
- Department of Respiratory Diseases, University Hospital of Reims, Reims, France
| | - Antoine Dumazet
- Department of Respiratory Diseases, University Hospital of Reims, Reims, France
| | - Sandra Dury
- Department of Respiratory Diseases, University Hospital of Reims, Reims, France
| | - François Lebargy
- Department of Respiratory Diseases, University Hospital of Reims, Reims, France
| | - Valérian Dormoy
- INSERM UMRS 1250, University Hospital of Reims, Reims, France
| | - Gaëtan Deslee
- Department of Respiratory Diseases, University Hospital of Reims, Reims, France.,INSERM UMRS 1250, University Hospital of Reims, Reims, France
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8
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Savarino E, Zentilin P, Marabotto E, Savarino V. Relevance of Measuring Substances in Bronchoalveolar Lavage Fluid for Detecting Aspiration-associated Extraesophageal Reflux Disease. J Neurogastroenterol Motil 2017; 23:318-319. [PMID: 28249378 PMCID: PMC5383128 DOI: 10.5056/jnm17027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Edoardo Savarino
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - Patrizia Zentilin
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Elisa Marabotto
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Vincenzo Savarino
- Division of Gastroenterology, Department of Internal Medicine, University of Genoa, Genoa, Italy
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9
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Özdemir P, Erdinç M, Vardar R, Veral A, Akyıldız S, Özdemir Ö, Bor S. The Role of Microaspiration in the Pathogenesis of Gastroesophageal Reflux-related Chronic Cough. J Neurogastroenterol Motil 2017; 23:41-48. [PMID: 27605525 PMCID: PMC5216633 DOI: 10.5056/jnm16057] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 06/24/2016] [Accepted: 08/15/2016] [Indexed: 12/13/2022] Open
Abstract
Background/Aims Gastroesophageal reflux disease (GERD) is one of the main causes of chronic cough. We evaluated the role of microaspiration in the pathogenesis of reflux-related cough by determining the amount of lipid-laden macrophages (LLMs) in bronchoalveolar lavage (BAL) specimens. Methods A total of 161 cases of chronic cough were evaluated, and 36 patients (average age 48.2 years) were recruited for this single center prospective study. Patients with a history of smoking, angiotensin converting enzyme inhibitor usage, any abnormality on pulmonary function tests, abnormal chest X-rays, occupational or environmental exposures, or upper airway cough syndrome were excluded. GERD was evaluated by 24-hour esophageal impedance-pH monitoring. BAL specimens for LLM determination were obtained from 34 patients by flexible bronchoscopy. Results Patients with pathological intra-esophageal reflux according to multichannel intraluminal impedance and pH monitoring had higher LLM positivity in BAL specimens than patients without pathological reflux (8/14 in reflux positive group vs 1/22 in reflux negative group; P = 0.004). The BAL cell distribution was not different between the 2 groups (P = 0.574 for macrophages, P = 0.348 for lymphocytes, P = 0.873 for neutrophils and P = 0.450 for eosinophils). Conclusions Our results confirm the role of the microaspiration of refluxate in the pathogenetic mechanism of chronic cough. While bronchoscopy is indicated in patients with chronic cough, in addition to the routine airway evaluation, BAL and LLM detection should be performed. LLM can be used to diagnose aspiration in reflux-related chronic cough. Future studies are needed to evaluate the response to anti-reflux medications or surgery in patients with LLM positivity.
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Affiliation(s)
- Pelin Özdemir
- Department of Chest Diseases, Su Hospital, İzmir, Turkey.,Ege Reflux Study Group, Ege University School of Medicine, Izmir, Turkey
| | - Münevver Erdinç
- Ege Reflux Study Group, Ege University School of Medicine, Izmir, Turkey.,Department of Chest Diseases, Ege University School of Medicine, İzmir, Turkey
| | - Rukiye Vardar
- Ege Reflux Study Group, Ege University School of Medicine, Izmir, Turkey.,Department of Gastroenterology, Ege University School of Medicine, İzmir, Turkey
| | - Ali Veral
- Department of Pathology, and 6Otolaryngology, Ege University School of Medicine, İzmir, Turkey
| | - Serdar Akyıldız
- Ege Reflux Study Group, Ege University School of Medicine, Izmir, Turkey.,Department of Otolaryngology, Ege University School of Medicine, İzmir, Turkey
| | - Özer Özdemir
- Department of Chest Diseases, Egepol Hospital, İzmir, Turkey
| | - Serhat Bor
- Ege Reflux Study Group, Ege University School of Medicine, Izmir, Turkey.,Department of Gastroenterology, Ege University School of Medicine, İzmir, Turkey
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10
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The radiology of diffuse interstitial pulmonary disease in children: pearls, pitfalls and new kids on the block in 2015. Radiol Med 2015; 121:352-61. [PMID: 26589422 DOI: 10.1007/s11547-015-0599-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 10/27/2015] [Indexed: 12/29/2022]
Abstract
Diffuse interstitial lung disease in children differs markedly from interstitial lung disease in adults and is a distinct entity. The childhood interstitial lung disease (ChILD) classification, devised in 2010 separates conditions into those occurring in infancy, and those not specific to infants, the later group containing many conditions related to systemic diseases (including connective tissue diseases and depositional/storage disorders), and conditions occurring in immunocompromised children. In this article, we briefly review normal lung growth and development. We discuss our preferred technique for imaging the lungs with computed tomography in children, and review the recent literature regarding the radiological appearance of various ChILD. We illustrate this with cases from our institution and emphasize the more recently recognised conditions including pleuroparenchymal fibroelastosis and filamin A deficiency-related lung disease.
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11
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Correlation between laryngobronchoscopy and pepsin in the diagnosis of extra-oesophageal reflux. The Journal of Laryngology & Otology 2015; 129:572-9. [DOI: 10.1017/s0022215115001164] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
AbstractObjective:This study aimed to investigate pepsin as a marker of extra-oesophageal reflux disease by examining its presence in tracheal aspirates and correlating it with macroscopic changes on laryngobronchoscopy, along with the results of standard tests for gastro-oesophageal reflux disease and clinical features.Methods:A retrospective review was undertaken of a cohort of 188 paediatric patients who underwent laryngobronchoscopy at a tertiary children's hospital and for whom pepsin assay results of tracheal aspirates were available. An association analysis was performed.Results:The mean patient age was 3.99 (3.40–4.58) years, with a male preponderance (55 per cent). Positive changes on laryngobronchoscopy were significantly associated with positive tracheal pepsin findings (p< 0.0001) but not with positive standard gastro-oesophageal reflux disease investigations. A positive pepsin assay was significantly associated with a history of recurrent croup (p= 0.0385) and a diagnosis of cystic fibrosis (p= 0.0232).Conclusion:Macroscopic changes on laryngobronchoscopy were significantly associated with positive tracheal pepsin findings in this paediatric population, suggesting that extra-oesophageal reflux disease may be a contributing aetiology.
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12
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Faro A, Wood RE, Schechter MS, Leong AB, Wittkugel E, Abode K, Chmiel JF, Daines C, Davis S, Eber E, Huddleston C, Kilbaugh T, Kurland G, Midulla F, Molter D, Montgomery GS, Retsch-Bogart G, Rutter MJ, Visner G, Walczak SA, Ferkol TW, Michelson PH. Official American Thoracic Society Technical Standards: Flexible Airway Endoscopy in Children. Am J Respir Crit Care Med 2015; 191:1066-80. [DOI: 10.1164/rccm.201503-0474st] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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13
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Abstract
PURPOSE OF REVIEW The purpose of this review is to highlight recent work and provide recommendations on the approach for diagnosis and management of chronic cough in a gastroenterology clinic. RECENT FINDINGS Chronic cough is a burdensome symptom affecting a large number of patients and contributes significant cost to the healthcare system. Recent work has shown that select patients may benefit from acid-suppressive therapy and even surgery when there is true pathologic evidence of reflux disease with cough. However, judicious use and proper interpretation of diagnostic testing for gastroesophageal reflux in the setting of cough is important to avoid unnecessary or inappropriate therapy. SUMMARY Chronic cough remains a vexing problem for many physicians, including gastroenterologists. It is important that physicians approach refractory cough in a multidisciplinary manner. Future research is needed to better understand the likely central hypersensitivity response mediating reflux-related cough and potential alternative approaches to therapy.
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14
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Kelly EA, Parakininkas DE, Werlin SL, Southern JF, Johnston N, Kerschner JE. Prevalence of pediatric aspiration-associated extraesophageal reflux disease. JAMA Otolaryngol Head Neck Surg 2014; 139:996-1001. [PMID: 23989194 DOI: 10.1001/jamaoto.2013.4448] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
IMPORTANCE The role of aspiration-associated extraesophageal reflux disease (AERD) in patients with chronic respiratory symptoms is not well defined. Identifying the frequency of AERD in these patients may provide guidance in their treatment. OBJECTIVE To determine the prevalence of AERD in patients with chronic respiratory symptoms and to assess the utility of pepsin as a new marker for AERD. DESIGN Case-control study performed from 2008 through 2012.Western blot analysis for pepsin and oil red O staining for lipid-laden macrophages (LLMs) was performed on bronchoalveolar lavage fluid specimens. SETTING Tertiary referral center. PARTICIPANTS Sixty-five patients (aged 4.5 months to 24 years) with chronic pulmonary disease, with or without tracheostomy, were compared with controls undergoing elective surgery who had no history of pulmonary disease. MAIN OUTCOMES AND MEASURES Presence of pepsin and LLMs and quantity of LLMs in specimens. RESULTS Seventy-six total patients participated: 34 patients who underwent bronchoscopy, 31 patients with tracheostomy, and 11 controls. Pepsin-positive bronchoalveolar lavage fluid specimens were identified in 25 patients who underwent bronchoscopy (74%) and 22 patients with tracheostomy (71%). All specimens from controls were negative for pepsin. Presence of LLMs was identified in specimens from 31 patients in the bronchoscopy group (91%), 16 patients in the tracheostomy group (52%), and 7 controls (64%), with a similar distribution of the quantity of LLMs in each lavage fluid specimen among the groups. CONCLUSIONS AND RELEVANCE Patients with chronic pulmonary disease have a high prevalence of AERD, which may have important treatment implications. The presence of pepsin was a better predictor of AERD in patients with respiratory symptoms compared with controls than presence of LLMs. Detection of pepsin in bronchoalveolar lavage fluid specimens can serve as a biomarker for AERD and is potentially superior to the current method of measuring LLMs. Whereas there is a significant association between AERD and the presence of chronic respiratory symptoms, this study does not verify causation. Additional study investigating the mechanism of pepsin on the respiratory epithelium may further our understanding of the pathophysiologic characteristics of this association and provide additional management options for these patients.
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15
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Gibeon D, Zhu J, Sogbesan A, Banya W, Rossios C, Saito J, Rocha JP, Hull JH, Menzies-Gow AN, Bhavsar PK, Chung KF. Lipid-laden bronchoalveolar macrophages in asthma and chronic cough. Respir Med 2013; 108:71-7. [PMID: 24172051 DOI: 10.1016/j.rmed.2013.10.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2013] [Revised: 09/29/2013] [Accepted: 10/01/2013] [Indexed: 01/09/2023]
Abstract
BACKGROUND The presence of lipids in alveolar macrophages (AMs) may impair their phagocytic response, and determine airway inflammation and obstruction. OBJECTIVE To determine the factors such as severity of asthma, chronic cough, airway inflammation and obesity that may influence the presence of lipids in lung macrophages. METHODS Bronchoalveolar lavage fluid (BALF) was obtained from 38 asthmatics (21 severe and 17 mild/moderate), 16 subjects with chronic cough and 11 healthy control subjects. The presence of lipids in macrophages was detected using an Oil-red-O stain and an index of lipid-laden macrophages (LLMI) was obtained. RESULTS LLMI scores were higher in healthy subjects (median 48 [IQR 10-61]) and the severe asthma group (37 [11.5-61]) compared to mild/moderate asthmatics (7 [0.5-37]; p < 0.05 each). Subjects reporting a history of gastro-oesophageal reflux disease (GORD) had higher LLMI values (41.5 [11.3-138] versus 13 [0-39.3], p = 0.02). There was no significant correlation between LLMI and chronic cough, BAL cell differential counts, FEV1, FEV1/FVC or body mass index (BMI). CONCLUSIONS The reduced LLMI in mild/moderate asthma may be related to lower incidence of GORD. However, this was not related to the degree of airflow obstruction, obesity or airway inflammation.
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Affiliation(s)
- D Gibeon
- Experimental Studies, National Heart and Lung Institute, Imperial College London, London, United Kingdom; Biomedical Research Unit, Royal Brompton & Harefield NHS Trust, London, United Kingdom.
| | - J Zhu
- Experimental Studies, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - A Sogbesan
- Biomedical Research Unit, Royal Brompton & Harefield NHS Trust, London, United Kingdom
| | - W Banya
- Experimental Studies, National Heart and Lung Institute, Imperial College London, London, United Kingdom; Biomedical Research Unit, Royal Brompton & Harefield NHS Trust, London, United Kingdom
| | - C Rossios
- Experimental Studies, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - J Saito
- Experimental Studies, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - J P Rocha
- Experimental Studies, National Heart and Lung Institute, Imperial College London, London, United Kingdom; Biomedical Research Unit, Royal Brompton & Harefield NHS Trust, London, United Kingdom
| | - J H Hull
- Biomedical Research Unit, Royal Brompton & Harefield NHS Trust, London, United Kingdom
| | - A N Menzies-Gow
- Biomedical Research Unit, Royal Brompton & Harefield NHS Trust, London, United Kingdom
| | - P K Bhavsar
- Experimental Studies, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - K F Chung
- Experimental Studies, National Heart and Lung Institute, Imperial College London, London, United Kingdom; Biomedical Research Unit, Royal Brompton & Harefield NHS Trust, London, United Kingdom.
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16
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Emilsson ÖI, Gíslason Þ, Olin AC, Janson C, Ólafsson Í. Biomarkers for gastroesophageal reflux in respiratory diseases. Gastroenterol Res Pract 2013; 2013:148086. [PMID: 23653634 PMCID: PMC3638692 DOI: 10.1155/2013/148086] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Accepted: 02/25/2013] [Indexed: 12/25/2022] Open
Abstract
Gastroesophageal reflux (GER) is commonly associated with respiratory symptoms, either through a vagal bronchoconstrictive reflex or through microaspiration of gastric contents. No diagnostic test is available, however, to diagnose when respiratory illnesses are caused by GER and when not, but research in this field has been moving forward. Various biomarkers in different types of biosamples have been studied in this context. The aim of this review is to summarize the present knowledge in this field. GER patients with respiratory diseases seem to have a different biochemical profile from similar patients without GER. Inflammatory biomarkers differ in asthmatics based on GER status, tachykinins are elevated in patients with GER-related cough, and bile acids are elevated in lung transplant patients with GER. However, studies on these biomarkers are often limited by their small size, methods of analysis, and case selections. The two pathogenesis mechanisms are associated with different respiratory illnesses and biochemical profiles. A reliable test to identify GER-induced respiratory disorders needs to be developed. Bronchoalveolar lavage is too invasive to be of use in most patients. Exhaled breath condensate samples need further evaluation and standardization. The newly developed particles in exhaled air measurements remain to be studied further.
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Affiliation(s)
- Össur Ingi Emilsson
- Faculty of Medicine, University of Iceland, Vatnsmyarvegur 16, 101 Reykjavik, Iceland
- Department of Respiratory Medicine and Sleep, Landspitali University Hospital, 108 Reykjavik, Iceland
| | - Þórarinn Gíslason
- Faculty of Medicine, University of Iceland, Vatnsmyarvegur 16, 101 Reykjavik, Iceland
- Department of Respiratory Medicine and Sleep, Landspitali University Hospital, 108 Reykjavik, Iceland
| | - Anna-Carin Olin
- Occupational and Environmental Medicine, Sahlgrenska Academy, Gothenburg University, 413 90 Göteborg, Sweden
| | - Christer Janson
- Department of Medical Sciences: Respiratory Medicine and Allergology, Uppsala University, 753 12 Uppsala, Sweden
| | - Ísleifur Ólafsson
- Department of Clinical Biochemistry, Landspitali University Hospital, 108 Reykjavik, Iceland
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