Title
Synovial inflammation, immune cells and their cytokines in osteoarthritis: A review
Author
de Lange-Brokaar, B.J.E.
Ioan-Facsinay, A.
van Osch, G.J.V.M.
Zuurmond, A.-M.
Schoones, J.
Toes, R.E.M.
Huizinga, T.W.J.
Kloppenburg, M.
Publication year
2012
Abstract
Objective: Although osteoarthritis (OA) is considered a non-inflammatory condition, it is widely accepted that synovial inflammation is a feature of OA. However, the role of immune cells and their cytokines in OA is largely unknown. This narrative systematic review summarizes the knowledge of inflammatory properties, immune cells and their cytokines in synovial tissues (STs) of OA patients. Design: Broad literature search in different databases was performed which resulted in 100 articles. Results: Of 100 articles 33 solely investigated inflammation in OA ST with or without comparison with normal samples; the remaining primarily focussed on rheumatoid arthritis (RA) ST. Studies investigating different severity stages or cellular source of cytokines were sparse. OA ST displayed mild/moderate grade inflammation when investigated by means of haematoxylin and eosin (H&E) staining. Most frequently found cells types were macrophages, T cells and mast cells (MCs). Overall the number of cells was lower than in RA, although the number of MCs was as high as or sometimes even higher than in RA ST. Cytokines related to T cell or macrophage function were found in OA ST. Their expression was overall higher than in normal ST, but lower than in RA ST. Their cellular source remains largely unknown in OA ST. Conclusion: Inflammation is common in OA ST and characterized by immune cell infiltration and cytokine secretion. This inflammation seems quantitatively and qualitatively different from inflammation in RA. Further research is needed to clarify the role of inflammation, immune cells and their cytokines in the pathogenesis of OA. © 2012 Osteoarthritis Research Society International.
Subject
Life
MHR - Metabolic Health Research
EELS - Earth, Environmental and Life Sciences
Healthy Living
Cytokines
Histology
Immune cells
Inflammation
Osteoarthritis
Synovial tissue
gamma interferon
interleukin 10
interleukin 18
interleukin 1beta
interleukin 2
interleukin 4
interleukin 6
interleukin 8
transforming growth factor beta
tumor necrosis factor alpha
cell infiltration
cytokine release
hip arthroplasty
immunocompetent cell
immunohistochemistry
information retrieval
knee arthroscopy
macrophage
mast cell
needle biopsy
osteoarthritis
priority journal
review
rheumatoid arthritis
synovectomy
synovitis
T lymphocyte
To reference this document use:
http://resolver.tudelft.nl/uuid:676bad86-aa77-4191-ba23-8a65a5bfb786
DOI
https://doi.org/10.1016/j.joca.2012.08.027
TNO identifier
465809
ISSN
1063-4584
Source
Osteoarthritis and Cartilage, 20 (12), 1484-1499
Bibliographical note
Chemicals/CAS: gamma interferon, 82115-62-6; interleukin 18, 189304-55-0; interleukin 2, 85898-30-2; interleukin 8, 114308-91-7
Document type
article