title: Macroscopical, Histological, and In Vitro Characterization of Nonosteoarthritic Versus Osteoarthritic Hip Joint Cartilage.
abstract: Osteoarthritis (OA) might affect chondrocyte culture characteristics and complement expression. Therefore, this study addressed the interrelation between macroscopical and microscopical structure, complement expression, and chondrocyte culture characteristics in non-OA and OA cartilage. Femoral head cartilage samples harvested from patients with femoral neck fractures (FNFs) and OA were analyzed for macroscopical alterations using an in-house scoring system, graded histologically (Mankin score), and immunolabeled for complement regulatory proteins (CRPs) and receptors. Morphology of monolayer cultured chondrocytes isolated from a subset of samples was assessed. The macroscopical score distinguished the FNF and OA cartilage samples and correlated significantly with the histological results. Chondrocyte phenotype from FNF or OA cartilage differed. Complement receptor C5aR, CRPs CD55 and CD59, and weakly receptor C3AR were detected in the investigated FNF and OA cartilage, except for CD46, which was detected in only two of the five investigated donors. The in-house score also allows inexperienced observers to distinguish non-OA and OA cartilage for experimental purposes.
authors.affiliation: Department of Orthopaedic, Trauma and Reconstructive Surgery, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Berlin, Germany.
authors.forename: Jessica
authors.initials: J
authors.lastname: Badendick
authors.affiliation: Department of Orthopaedic, Trauma and Reconstructive Surgery, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Berlin, Germany.
authors.forename: Owen
authors.initials: O
authors.lastname: Godkin
authors.affiliation: Department of Orthopaedic, Trauma and Reconstructive Surgery, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Berlin, Germany.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Kohl
authors.affiliation: Department of Orthopaedic, Trauma and Reconstructive Surgery, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Berlin, Germany.
authors.forename: Carola
authors.initials: C
authors.lastname: Meier
authors.affiliation: Department of Orthopaedic, Trauma and Reconstructive Surgery, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Berlin, Germany.
authors.forename: Michal
authors.initials: M
authors.lastname: Jagielski
authors.affiliation: Department of Orthopaedic, Trauma and Reconstructive Surgery, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Berlin, Germany.
authors.forename: Zhao
authors.initials: Z
authors.lastname: Huang
authors.affiliation: Department of Orthopaedic, Trauma and Reconstructive Surgery, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Berlin, Germany.
authors.forename: Stephan
authors.initials: S
authors.lastname: Arens
authors.affiliation: Department of Orthopaedic, Trauma and Reconstructive Surgery, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Berlin, Germany.; Department of Anatomy, Paracelsus Medical University, Salzburg and Nuremberg, Nuremberg, Germany.
authors.forename: Tobias
authors.initials: T
authors.lastname: Schneider
authors.affiliation: Department of Orthopaedic, Trauma and Reconstructive Surgery, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Berlin, Germany.; Department of Anatomy, Paracelsus Medical University, Salzburg and Nuremberg, Nuremberg, Germany.
authors.forename: Gundula
authors.initials: G
authors.lastname: Schulze-Tanzil
keywords: Mankin score; chondrocyte; complement receptors; complement regulatory proteins; hip joint cartilage; osteoarthritis