title: The effects of sodium hyaluronate on mRNA expressions of matrix metalloproteinase-1, -3 and tissue inhibitor of metalloproteinase-1 in cartilage and synovium of traumatic osteoarthritis model.
abstract: OBJECTIVE
  To observe the influence of intra-articular injection of sodium hyaluronate (HA) on the mRNA expressions of matrix metalloproteinase-1,-3 (MMP-1,-3) and tissue inhibitor of metalloproteinase-1 (TIMP-1) in cartilage and synovium of traumatic osteoarthritis (OA).
  
  
  METHODS
  Sixteen white rabbits underwent unilateral anterior cruciate ligament transection (ACLT) were divided into 2 groups randomly 5 weeks after transection. The experimental group rabbits received 0.3 ml of 1% HA by intra-articular injection once a week. Animals in the control group were treated under the same conditions using physiological saline. Ten weeks following surgery, cartilage and synovium were harvested. The mRNA expressions of MMP-1, MMP-3 and TIMP-1 were analyzed using reverse transcription-polymerase chain reaction (RT-PCR).
  
  
  RESULTS
  In synovium, the mRNA expression of MMP-3 was suppressed in the HA injection group. HA treatment had no effect on the MMP-3 expression in cartilage. No significant difference of MMP-1 and TIMP-1 expressions in cartilage and synovium was found between the HA injection group and the control group.
  
  
  CONCLUSIONS
  One of the mechanisms of the therapeutic effect of HA may be the inhibition of expression of MMP-3 in synovium during early stage of traumatic OA.
authors.affiliation: Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan 430060, China. qb19712003@yahoo.com.cn
authors.forename: Bo
authors.initials: B
authors.lastname: Qiu
authors.forename: Shi-qing
authors.initials: SQ
authors.lastname: Liu
authors.forename: Hao
authors.initials: H
authors.lastname: Peng
authors.forename: Hai-bin
authors.initials: HB
authors.lastname: Wang
mesh_terms: D000818:Animals; D016118:Anterior Cruciate Ligament / Q000187:drug effects / Q000378:metabolism; D002358:Cartilage, Articular / Q000378:metabolism*; D006820:Hyaluronic Acid / Q000494:pharmacology*; D019278:Matrix Metalloproteinase 3 / Q000096:biosynthesis / Q000187:drug effects* / Q000235:genetics; D020370:Osteoarthritis, Knee / Q000378:metabolism* / Q000473:pathology; D012333:RNA, Messenger / Q000235:genetics; D011817:Rabbits; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013583:Synovial Membrane / Q000378:metabolism*; D019715:Tissue Inhibitor of Metalloproteinase-1 / Q000096:biosynthesis / Q000187:drug effects* / Q000235:genetics
chemical_list: D012333:RNA, Messenger; D019715:Tissue Inhibitor of Metalloproteinase-1; D006820:Hyaluronic Acid; D019278:Matrix Metalloproteinase 3