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Article (Scientific journals)
Increase in Blood Eosinophil Count Over Time and Sputum IL8 are Associated with FEV1 Decline in Asthma.
Graff, Sophie; Moermans, Catherine; Gerday, Sara et al.
2024In Lung, 203 (1), p. 8
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Keywords :
Airway inflammation; Asthma; Decline; Eosinophils; Lung Diseases; Interleukin-8; CXCL8 protein, human; Biomarkers; Immunoglobulin E; Interleukin-5; Humans; Male; Female; Middle Aged; Forced Expiratory Volume; Adult; Leukocyte Count; Time Factors; Disease Progression; Lung/physiopathology; Immunoglobulin E/blood; Interleukin-5/blood; Sputum/immunology; Asthma/physiopathology; Asthma/blood; Asthma/immunology; Asthma/diagnosis; Interleukin-8/blood; Biomarkers/blood
Abstract :
[en] [en] BACKGROUND: Asthma is associated with accelerated rate of FEV1 decline. OBJECTIVE: To determine predictive factors associated with accelerated FEV1 decline in adult asthma and evaluate sputum cytokines as potential biomarkers for airflow decline. METHODS: We recruited 125 asthmatics evaluated at the asthma clinic of Liège and reevaluated them at least 5 years later. Clinical, functional and inflammatory characteristics were compared between patients with accelerated decline (FEV1 decline > 0.85% pred.y-1) and others. Predictive factors were highlighted with linear regression analysis. Sputum EGF, VEGF, FGF, IL5, IL8, TGF-β, and IgE levels were measured in 58 of these patients at both visits by Human XL cytokine Luminex Performance assay and Elisa. RESULTS: Post-BD FEV1 decline was 0.06 ± 2.44% pred.y-1 in the overall population. Median (IQR) time between visits was 66 (62 - 86) months. The multivariable analysis showed that an increase in blood eosinophils over time (Δ BEC) (Reg. Coef. (95%CI): 0.002 (0.001 to 0.004), p = 0.005)) and onset of asthma (0.04 (0.003 to 0.07), p = 0.036) were independently associated with FEV1 decline. IL8 levels measured at baseline were higher (499 (408-603) pg/ml, p = 0.0040) in patients with accelerated decline compared to others (143 (88-308) pg/ml). CONCLUSION: In this study, we have confirmed that an increase in blood eosinophil counts over a follow-up of at least 5 years and later onset of asthma are associated with accelerated annual FEV1 decline. Moreover, high sputum IL8 levels could be a risk factor for accelerated decline in asthma patients.
Disciplines :
Cardiovascular & respiratory systems
Author, co-author :
Graff, Sophie  ;  Université de Liège - ULiège > Fundamental and Applied Research for Animals and Health (FARAH) > FARAH: Médecine vétérinaire comparée
Moermans, Catherine  ;  Université de Liège - ULiège > GIGA > GIGA I3 - Pneumology
Gerday, Sara  ;  Université de Liège - ULiège > Faculté de Médecine > Form. doct. sc. méd. (paysage)
Henket, Monique ;  Centre Hospitalier Universitaire de Liège - CHU > > Service de pneumologie - allergologie
PAULUS, Virginie ;  Centre Hospitalier Universitaire de Liège - CHU > > Service de pneumologie - allergologie
GUISSARD, Françoise ;  Centre Hospitalier Universitaire de Liège - CHU > > Service de pneumologie - allergologie
Louis, Renaud ;  Université de Liège - ULiège > Département des sciences cliniques > Pneumologie - Allergologie
Schleich, Florence  ;  Université de Liège - ULiège > GIGA > GIGA I3 - Pneumology
Language :
English
Title :
Increase in Blood Eosinophil Count Over Time and Sputum IL8 are Associated with FEV1 Decline in Asthma.
Publication date :
30 November 2024
Journal title :
Lung
ISSN :
0341-2040
eISSN :
1432-1750
Publisher :
Springer Science and Business Media LLC, United States
Volume :
203
Issue :
1
Pages :
8
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 02 January 2025

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