PMID- 25428773 OWN - NLM STAT- MEDLINE DCOM- 20150522 LR - 20161125 IS - 1554-527X (Electronic) IS - 0736-0266 (Linking) VI - 33 IP - 4 DP - 2015 Apr TI - Effect of tenascin-C on the repair of full-thickness osteochondral defects of articular cartilage in rabbits. PG - 563-71 LID - 10.1002/jor.22794 [doi] AB - The purpose of this study was to examine the effect of tenascin-C (TNC) on the repair of full-thickness osteochondral defects of articular cartilage in vivo. We used a gellan-gellan-sulfate sponge (Gellan-GS) to maintain a TNC-rich environment in the cartilage defects. We implanted Gellan-GS soaked in PBS only (Group 1), Gellan-GS soaked in 10 microg/ml of TNC (Group 2), and Gellan-GS soaked in 100 microg/ml of TNC (Group 3) into a full-thickness osteochondral defect of the patellar groove of rabbits. The defect area was examined grossly and histologically 4-12 weeks after surgery. Sections of synovium were also immunohistochemically investigated. Histologically as well as macroscopically, the defects in Group 2 showed better repair than the other groups at 8 and 12 weeks after surgery. Inflammation of the synovium tended to diminish over time in all groups, and the degree of synovitis was the same for all three groups at each time point. In conclusion, Gellan-GS soaked in TNC can be used as a novel scaffold for the repair of articular cartilage defects. This study also indicates that TNC promotes the repair of full-thickness osteochondral defects in vivo. CI - (c) 2015 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. FAU - Ikemura, Shigeto AU - Ikemura S AD - Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, Mie, Japan. FAU - Hasegawa, Masahiro AU - Hasegawa M FAU - Iino, Takahiro AU - Iino T FAU - Miyamoto, Keiichi AU - Miyamoto K FAU - Imanaka-Yoshida, Kyoko AU - Imanaka-Yoshida K FAU - Yoshida, Toshimichi AU - Yoshida T FAU - Sudo, Akihiro AU - Sudo A LA - eng PT - Journal Article DEP - 20150212 PL - United States TA - J Orthop Res JT - Journal of orthopaedic research : official publication of the Orthopaedic Research Society JID - 8404726 RN - 0 (Delayed-Action Preparations) RN - 0 (Polysaccharides) RN - 0 (Polysaccharides, Bacterial) RN - 0 (Sulfuric Acid Esters) RN - 0 (Tenascin) RN - 0 (gellan sulfate) RN - 7593U09I4D (gellan gum) SB - IM MH - Animals MH - Cartilage, Articular/*drug effects/*injuries/pathology MH - Delayed-Action Preparations MH - Disease Models, Animal MH - Female MH - Patella/injuries MH - Polysaccharides/pharmacology MH - Polysaccharides, Bacterial/pharmacology MH - Rabbits MH - Sulfuric Acid Esters/pharmacology MH - Surgical Sponges MH - Synovial Membrane/pathology MH - Tenascin/*pharmacology MH - Wound Healing/*drug effects MH - Wounds, Penetrating/*drug therapy/pathology/physiopathology OTO - NOTNLM OT - animal model OT - cartilage repair OT - gellan-gellan-sulfate OT - tenascin-C EDAT- 2014/11/28 06:00 MHDA- 2015/05/23 06:00 CRDT- 2014/11/28 06:00 PHST- 2014/08/13 00:00 [received] PHST- 2014/11/24 00:00 [accepted] PHST- 2014/11/28 06:00 [entrez] PHST- 2014/11/28 06:00 [pubmed] PHST- 2015/05/23 06:00 [medline] AID - 10.1002/jor.22794 [doi] PST - ppublish SO - J Orthop Res. 2015 Apr;33(4):563-71. doi: 10.1002/jor.22794. Epub 2015 Feb 12.