In major joint diseases the human synovium retains its potential to form repair cartilage.

Autor: Hunziker EB; Departments of Osteoporosis and Orthopaedic Surgery, Inselspital Bern University Hospital, Freiburgstrasse 3, 3010, Bern, Switzerland. ernst.hunziker@dbmr.unibe.ch., Shintani N; Department of Osteoporosis, Inselspital Bern University Hospital, Bern, Switzerland., Lippuner K; Department of Osteoporosis, Inselspital Bern University Hospital, Bern, Switzerland., Vögelin E; Departments of Plastic and Hand Surgery, Inselspital Bern University Hospital, Bern, Switzerland., Keel MJB; Trauma Center Hirslanden, Clinic Hirslanden, Zurich, Switzerland.; Medical School, University of Zurich, Zurich, Switzerland.; Department of Orthopaedic Surgery, Inselspital Bern University Hospital, Bern, Switzerland.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2023 Jun 26; Vol. 13 (1), pp. 10375. Date of Electronic Publication: 2023 Jun 26.
DOI: 10.1038/s41598-023-34841-1
Abstrakt: The inner surface layer of human joints, the synovium, is a source of stem cells for the repair of articular cartilage defects. We investigated the potential of the normal human synovium to form novel cartilage and compared its chondrogenic capacity with that of two patient groups suffering from major joint diseases: young adults with femoro-acetabular impingement syndromes of the hip (FAI), and elderly individuals with osteoarthritic degeneration of the knee (OA). Synovial membrane explants of these three patient groups were induced in vitro to undergo chondrogenesis by growth factors: bone morphogenetic protein-2 (BMP-2) alone, transforming growth factor-β1 (TGF-β1) alone, or a combination of these two. Quantitative evaluations of the newly formed cartilages were performed respecting their gene activities, as well as the histochemical, immunhistochemical, morphological and histomorphometrical characteristics. Formation of adult articular-like cartilage was induced by the BMP-2/TGF-β1 combination within all three groups, and was confirmed by adequate gene-expression levels of the anabolic chondrogenic markers; the levels of the catabolic markers remained low. Our data reveal that the chondrogenic potential of the normal human synovium remains uncompromised, both in FAI and OA. The potential of synovium-based clinical repair of joint cartilage may thus not be impaired by age-related joint pathologies.
(© 2023. The Author(s).)
Databáze: MEDLINE
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