Using the rat model of posttraumatic osteoarthrosis of the knee joint induced by surgical transection of their anterior cruciate ligaments, we showed that irreversible loss of hyaluronan by the extracellular matrix of the joint cartilage tissue against the background of oxidative stress accompanied by accumulation of intermediate LPO products in blood serum and formation of thiol system incompetence was one of the key patterns of dystrophic degeneration of the cartilage tissue. Considerable metabolic shifts were associated with structural modification of the articular hyaline cartilage: its thinning and a decrease of chondrocyte density and their abnormal spatial distribution in the matrix with predominance of solitary isolated cells with signs of karyopyknosis and karyolysis.
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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 172, No. 8, pp. 248-252, August, 2021
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Zubavlenko, R.А., Belova, S.V., Gladkova, Е.V. et al. Morphological Changes in Articular Cartilage and Free-Radical Lipid Peroxidation in Rats with Posttraumatic Osteoarthrosis. Bull Exp Biol Med 172, 214–217 (2021). https://doi.org/10.1007/s10517-021-05365-3
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DOI: https://doi.org/10.1007/s10517-021-05365-3