Synovial fluid but not plasma interleukin-8 is associated with clinical severity and inflammatory markers in knee osteoarthritis women with joint effusion
García-Manrique, María (Universitat Autònoma de Barcelona. Departament de Medicina)
Calvet, Joan (Universitat Autònoma de Barcelona. Departament de Medicina)
Orellana, Cristóbal (Universitat Autònoma de Barcelona. Departament de Medicina)
Berenguer-Llergo, Antoni (Institute for Research in Biomedicine (IRB Barcelona))
Garcia-Cirera, Silvia (Parc Taulí Hospital Universitari. Institut d'Investigació i Innovació Parc Taulí (I3PT))
Llop, Maria (Parc Taulí Hospital Universitari. Institut d'Investigació i Innovació Parc Taulí (I3PT))
Albiñana, Néstor (Parc Taulí Hospital Universitari. Institut d'Investigació i Innovació Parc Taulí (I3PT))
Galisteo-Lencastre, Carlos (Parc Taulí Hospital Universitari. Institut d'Investigació i Innovació Parc Taulí (I3PT))
Gratacós, Jordi (Universitat Autònoma de Barcelona. Departament de Medicina)

Date:	2021
Abstract:	Several cytokines and adipokines are related to clinical severity and progression in knee osteoarthritis. The aim of this study was to evaluate the associations of IL-8 with clinical severity and with local and systemic adipokines and cytokines. This is a Cross-sectional study including 115 women with symptomatic primary knee osteoarthritis with ultrasound-confirmed joint effusion. Age, symptoms duration and body mass index were collected. Radiographic severity was evaluated according to Kellgren-Lawrence. Pain and disability were assessed by Lequesne and Knee injury and Osteoarthritis Outcome Score pain, symptoms and function scales. Three inflammatory markers and five adipokines were measured by ELISA in serum and synovial fluid. Partial correlation coefficient (PCC) and corresponding 95% confidence interval were used to evaluate association. Synovial fluid IL-8 was significantly associated with clinical severity scales. After controlling for potential confounders, associations measured by a Partial Correlation Coefficient (PCC) remained essentially unaltered for Lequesne (PCC = 0. 237), KOOS pain (PCC = − 0. 201) and KOOS symptoms (PCC = − 0. 209), KOOS function (PCC = − 0. 185), although the later did not reach statistical significance. Also in synovial fluid samples, associations were found between IL-8 and TNF (PCC = 0. 334), IL6 (PCC = 0. 461), osteopontin (PCC = 0. 575), visfatin (PCC = 0. 194) and resistin (PCC = 0. 182), although significance was not achieved for the later after statistical control for confounders. None of these associations were detected in serum. In conclusion, IL-8 was associated with clinical severity, inflammatory markers and adipokines in synovial fluid, but not in blood. Although the reported associations are weak to moderate in magnitude, these findings reinforce the notion that local and not systemic inflammation is more relevant to clinical severity in knee OA women with joint effusion.
Note:	Altres ajuts: 2017 Grant of Sociedad Española de Reumatología (SER)
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Musculoskeletal system ; Rheumatic diseases
Published in:	Scientific reports, Vol. 11 (march 2021) , ISSN 2045-2322

DOI: 10.1038/s41598-021-84582-2
PMID: 33664374

7 p, 785.9 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Health sciences and biosciences > Parc Taulí Research and Innovation Institute (I3PT
Articles > Research articles
Articles > Published articles