{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,11]],"date-time":"2026-02-11T03:42:16Z","timestamp":1770781336794,"version":"3.50.0"},"reference-count":33,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2015,5,6]],"date-time":"2015-05-06T00:00:00Z","timestamp":1430870400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Biomedical Materials Res"],"published-print":{"date-parts":[[2015,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:label\/><jats:p><jats:italic>Objective:<\/jats:italic>This study aimed to elucidate the therapeutic effects of intra\u2010articular administration of ultra\u2010purified low endotoxin alginate (UPLE\u2010alginate) on osteoarthritis (OA) using a canine anterior cruciate ligament transection (ACLT) model.<jats:italic>Design:<\/jats:italic>We used 20 beagle dogs. ACLT was performed on the left knee of each dog and a sham operation was performed on the right knee as a control. All animals were randomly divided into the control (saline) and therapeutic (UPLE\u2010alginate) groups. Animals in the control and therapeutic groups received weekly injections with 0.7 mL normal saline or 0.7 mL 0.5% UPLE\u2010alginate, respectively, from 0 to 3 weeks after ACLT or sham operation. At 9 weeks after ACLT, the knee joints of all animals were observed using arthroscopy. All animals were euthanized at 14 weeks after ACLT and evaluated using morphologic assessment, histologic assessment, and biomechanical testing.<jats:italic>Results:<\/jats:italic>Arthroscopic findings showed intact cartilage surface in both groups. Morphologic findings in the therapeutic group showed milder degeneration compared with those of the control group, but there were no significant differences between groups. Histologic scores of the medial femoral condyle (MFC) and lateral femoral condyle (LFC) were better in the therapeutic group than the control group (MFC:<jats:italic>p<\/jats:italic>\u2009=\u20090.009, LFC:<jats:italic>p<\/jats:italic>\u2009=\u20090.009). Joint lubrication did not differ significantly between groups.<jats:italic>Conclusion:<\/jats:italic>Intra\u2010articular administration of UPLE\u2010alginate in the early stage of OA slowed disease progression in canines. UPLE\u2010alginate may have potential as a therapeutic agent for OA patients and reduce the number of patients who need to undergo total joint arthroplasty. \u00a9 2015 Wiley Periodicals, Inc. 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