Shoaib Faruqi
Serum LDH in chronic cough: A potential marker of airway inflammation
Faruqi, Shoaib; Wilmot, Rachel; Wright, Caroline; Morice, Alyn Hugh
Authors
Rachel Wilmot
Caroline Wright
Professor Alyn Morice A.H.Morice@hull.ac.uk
Foundation Chair and Professor of Respiratory Medicine
Abstract
Introduction and Objectives: Lactate dehydrogenase (LDH) is found in almost all tissues of the body and five different isoenzymes are known (LDH-1 to LDH-5). LDH can be elevated in many pathological conditions. We have observed serum LDH to be increased in patients with chronic cough. We wanted to confirm this finding, study the reproducibility and determine the origin of the LDH. Methods: Patients prospectively seen at the Hull Cough Clinic had total and specific LDH isoenzyme levels in serum determined. A subgroup of patients also had a serum creatine phosphokinase (CK) measured. Patients completed cough symptom scores and the Hull Airway Reflux Questionnaire (HARQ). Spirometry was performed. Results: Eighty-three patients were included. Forty-two percent had LDH values above the reference range and 78% had LDH values in the fourth quartile of the reference range or above. This increase in LDH was predominantly because of a rise in isoenzymes 4 and 5. The increase in LDH was found to be reproducible at 8 weeks. Ten percent had CK values above the normal range. There was no correlation observed between LDH values and the cough scores, HARQ scores or lung function. Conclusion: Serum LDH levels are elevated in a substantial proportion of patients with chronic cough. This rise is likely to be due to airway inflammation known to be associated with chronic cough. © 2011 Blackwell Publishing Ltd.
Citation
Faruqi, S., Wilmot, R., Wright, C., & Morice, A. H. (2012). Serum LDH in chronic cough: A potential marker of airway inflammation. Clinical Respiratory Journal, 6(2), 81-87. https://doi.org/10.1111/j.1752-699X.2011.00250.x
Journal Article Type | Article |
---|---|
Acceptance Date | Jan 13, 2011 |
Online Publication Date | Jun 8, 2011 |
Publication Date | Apr 1, 2012 |
Deposit Date | May 23, 2022 |
Journal | Clinical Respiratory Journal |
Print ISSN | 1752-6981 |
Publisher | Wiley |
Peer Reviewed | Peer Reviewed |
Volume | 6 |
Issue | 2 |
Pages | 81-87 |
DOI | https://doi.org/10.1111/j.1752-699X.2011.00250.x |
Keywords | Chronic cough; Creatine kinase; Inflammation; Lactate dehydrogenase |
Public URL | https://hull-repository.worktribe.com/output/3610246 |
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