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• W2360214731 abstract "The changes of the aquaporins 1 (AQP-1) expression may be related to the chondrocyte apoptosis. To explore the correlation between the expression of AQP-1 and chondrocyte apoptosis by observing the expression of the AQP-1 and the Caspase-3, so as to provide experimental evidence for the further study in the pathogenesis of osteoarthritis (OA).Seventy-two 8-week-old clean grade male Sprague Dawley rats, weighing 286-320 g (mean, 300 g), were randomly divided into the operated group (n = 24), the sham-operated group (n = 24), and the control group (n = 24). OA models were made by amputating the anterior cruciate ligament and medial collateral ligament, and partial excision of medial meniscus in operated group; the articular cavity was exposed only in sham-operated group; and no treatment was given in control group. The general condition of the rat was observed after model was established. At 1, 2, 4, and 8 weeks, the specimens of knee joints were harvested to perform the gross and histological observations; the mRNA expressions of AQP-1 and Caspase-3 were determined by real-time fluorescent quantitative PCR; and the activity of the Caspase-3 protease was detected. The correlations between the expression of AQP-1 mRNA and the expressions of Caspase-3 mRNA and protease were analyzed.Totally 6 rats died after operation, and the rats were supplied immediately; the other rats survived to the end of experiment. The appearance and structure of knee articular cartilage were normal in control group and sham-operated group. While in operated group, the cartilage had a rough surface with fissure and vegetation, and fibrosis and irregular cell arrangement were seen on the surface of cartilage. There were significant differences in the Mankin score between the operated group and sham-operated group, control group at 2, 4, and 8 weeks (P < 0.05). There was no significant difference in expressions of the AQP-1 mRNA and Caspase-3 mRNA, and the activity of the Caspase-3 protease among 3 groups at 1 week after operation (P > 0.05); while the expressions of the AQP-1 mRNA, Caspase-3 mRNA, and the activity of the Caspase-3 protease in operated group were significantly higher than those in sham-operated group and control group at 2, 4, and 8 weeks after operation (P < 0.05), and there was an increased trend over time. There was significantly positive correlation (r = 0.817, P = 0.000) between the expressions of AQP-1 mRNA and Caspase-3 mRNA, and the regression equation was y = 0.426 7x(2) + 0.051 5x; meanwhile, there was also significantly positive correlation (r = 0.945, P = 0.000) between the expression of AQP-1 mRNA and the activity of Caspase-3 protease, and the regression equation was y = 15.423 0x + 4.392 8.The up-regulation of AQP-1 expression in OA cartilage may be related to the chondrocyte apoptosis, and the changes of AQP-1 expression may involve in the pathogenesis of OA." @default.
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• W2360214731 date "2011-03-01" @default.
• W2360214731 modified "2023-09-26" @default.
• W2360214731 title "[Correlation between expression of aquaporins 1 and chondrocyte apoptosis in articular chondrocyte of osteoarthritis]." @default.
• W2360214731 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21500577" @default.
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