Abstract:
:Wound healing in ligaments is a complex process which leads to functionally impaired scar tissue, even after extended time postinjury. To investigate the potential role of proteinases and inhibitors, as well as potential regulators of their expression, mRNA levels for collagenase, stromelysin, urokinase, PAI-1, and TIMPs 1 to 4 have been assessed by semiquantitative RT-PCR in RNA isolated from rabbit ligaments 3, 6, and 14 weeks postinjury. In addition, mRNA levels for IL-1, TNF, COX-2, and iNOS, potential regulators of proteinase/inhibitor expression, have been assessed. mRNA levels for the proteinases TIMP-1, -2, and -3 and PAI-1 were elevated early in scar tissue, but TIMP-4 mRNA levels exhibited a different pattern. In contrast, mRNA levels for the cytokines iNOS and COX-2 were either unchanged or depressed early after injury. The results indicate that alterations in mRNA levels for proteinases and inhibitors occurring early after injury are likely being influenced by factors other than IL-1, TNF, or products of COX-2 or iNOS.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Reno C,Boykiw R,Martinez ML,Hart DAdoi
10.1006/bbrc.1998.9734subject
Has Abstractpub_date
1998-11-27 00:00:00pages
757-63issue
3eissn
0006-291Xissn
1090-2104pii
S0006291X98997340journal_volume
252pub_type
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