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Plasminogen activator inhibitor-1 deficiency enhances subchondral osteopenia after induction of osteoarthritis in mice
| Content Provider | Semantic Scholar |
|---|---|
| Author | Moritake, Akihiro Kawao, Naoyuki Okada, Kiyotaka Tatsumi, Kohei Ishida, Masayoshi Okumoto, Katsumi Matsuo, Osamu Akagi, Masao Kaji, Hiroshi |
| Copyright Year | 2017 |
| Abstract | BackgroundSubchondral osteopenia is important for the pathophysiology of osteoarthritis (OA). Although previous studies suggest that plasminogen activator inhibitor-1 (PAI-1), an inhibitor of fibrinolysis, is related to bone metabolism, its role in OA remains unknown. We therefore investigated the roles of PAI-1 in the subchondral bone in OA model mice.MethodsWild type (WT) and PAI-1-deficient (KO) mice were ovariectomized (OVX), and then destabilization of the medial meniscus (DMM) surgery was performed.ResultsDMM and OVX significantly decreased the trabecular bone mineral density of the subchondral bone evaluated by quantitative computed tomography in PAI-1 KO mice. The effects of OVX and/or PAI-1 deficiency on the OARSI score for the evaluation of the progression of knee degeneration were not significant. PAI-1 deficiency significantly augmented receptor activator nuclear factor κB ligand mRNA levels enhanced by IL-1β in mouse primary osteoblasts, although it did not affect osteoblast differentiation. Moreover, PAI-1 deficiency significantly increased osteoclast formation from mouse bone marrow cells.ConclusionWe showed that PAI-1 deficiency accelerates the subchondral osteopenia after induction of OA in mice. PAI-1 might suppress an enhancement of bone resorption and subsequent subchondral osteopenia after induction of OA in mice. |
| File Format | PDF HTM / HTML |
| PubMed reference number | 28893232 |
| Journal | Medline |
| Volume Number | 18 |
| Alternate Webpage(s) | https://bmcmusculoskeletdisord.biomedcentral.com/track/pdf/10.1186/s12891-017-1752-5?site=bmcmusculoskeletdisord.biomedcentral.com |
| Alternate Webpage(s) | https://doi.org/10.1186/s12891-017-1752-5 |
| Journal | BMC Musculoskeletal Disorders |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
