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- W2416701981 abstract "Aim: Previous investigations have shown the vital role of chondrocyte CD44 in cartilage homeostasis and matrix attachment and indicated a participation of CD44v5 in the development of osteoarthritis. However, all reports dealt with late stage human osteoarthritis, as human specimens are only available at the time of surgery. Thus, little is known about the expression of CD44v5 in the time course of osteoarthritis. The current study was designed to evaluate the expression of CD44v5 on chondrocytes of hyaline cartilage in the time course of osteoarthritis. Methods: In twelve white new-zealand-rabbits the anterior cruciate ligament was resected to create an anterior instability of the knee. In twelve control rabbits only a sham operation without resection of the ACL was done. Four animals of each group were sacrificed at three, six and twelve weeks each. After opening of the knee joint, osteoarthritis was macroscopically graded and hyaline cartilage of the load bearing area was evaluated histologically according to Mankin and by immunostaining for CD44v5. Results: In the trial group, macroscopic and histological grades of OA showed a positive linear correlation to the time after surgery. Immunostaining showed an increased expression of CD44v5 in the control group after 3 and 6 weeks, which dropped to normal after twelve weeks. There was no difference between control and trial groups after 3 and 6 weeks, but after 12 weeks. We found a significant positive correlation between CD44v5-expression and macroscopic (r=0.294) and histological (r=0.314) grades of OA. Conclusion: The current study shows in-vivo an increase of expression of the hyaluronan receptor CD44v5 in the time course of osteoarthritis. Further studies are needed to evaluate whether this pattern applies to human beings and whether new treatment approaches could evolve from this knowledge." @default.
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- W2416701981 date "2006-03-01" @default.
- W2416701981 modified "2023-09-23" @default.
- W2416701981 title "EXPRESSION OF THE MATRIX RECEPTOR CD44V5 ON CHONDROCYTES CHANGES WITH OSTEOARTHRITIS. AN EXPERIMENTAL INVESTIGATION IN THE RABBIT." @default.
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