Background: Matrix metalloproteinases (MMPs) and their tissue inhibitors (TIMPS) play a key role in the pathogenesis of osteoarthritis (OA). Recent research showed the involvement of some MMPs in COVID-19, but the results are limited and contradictory. Objective: In this study, we investigated the levels of MMPs (MMP-1, MMP-2, MMP-3, MMP-8, MMP-9, MMP-10) and TIMP-1 in the plasma of patients with OA after recovery from COVID-19. Methods: The experiment involved patients aged 39 to 80 diagnosed with knee OA. All study participants were divided into three research groups: the control group included healthy individuals, the group OA included patients with enrolled cases of OA, and the third group of OA and COVID-19 included patients with OA who recovered from COVID-19 6-9 months ago. The levels of MMPs and TIMP-1 were measured in plasma by enzyme-linked immunosorbent assay. Results: The study showed a change in the levels of MMPs in patients with OA who had COVID-19 and those who did not have a history of SARS-CoV-2 infection. Particularly, patients with OA who were infected with coronavirus established an increase in MMP-2, MMP-3, MMP-8, and MMP-9, compared to healthy controls. Compared to normal subjects, a significant decrease in MMP-10 and TIMP-1 was established in both groups of patients with OA and convalescent COVID-19. Conclusion: Thus, the results suggest that COVID-19 can affect the proteolysis-antiproteolysis system even after a long postinfectious state and may cause complications of existing musculoskeletal pathologies.
The Сoronavirus disease 2019 (COVID-19) pandemic has had an extremely serious impact on the livelihoods of people worldwide. Despite the mainly respiratory manifestations of SARS-CoV-2 infection, its consequences can affect the functioning of most systems of organism, including the musculoskeletal, dysfunction of which is a leading factor in disability of the population. Diseases of the joints are one of the most common pathologie of modernity, which in the last decade are increasingly found in young people and even children. The musculoskeletal symptoms can be observed as isolated clinical signs and expressed regardless of the severity of the viral disease. Chronic fatigue, myalgia, swelling and joint pain may occur during the acute phase of COVID-19 and as short-term or long-term complications, but their prevalence has not been systematically studied. Considering the wide range of clinical manifestations of SARS-CoV-2 infection and the complexity of their pathogenesis, the mechanisms underlying lesions of musculoskeletal system and rheumatological complications remain unclear. Today, the main research in this direction is focused mainly on a complete understanding of the regulatory pathways of immune dysregulation and inflammation. Excessive secretion of pro-inflammatory cytokines, disruption of signal transduction and immune response are the result of the severe impact of SARS-CoV-2 infection on most organs, including joints, as well as the use of corticosteroids for the treatment of patients with COVID-19. The presented review highlights generalized information on the main pathophysiological processes that can occur in the joints as a manifestation of the impact of SARS-CoV-2 infection, and possible key mechanisms which contribute to the progression of pathological changes.
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