rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
1-2
|
pubmed:dateCreated |
1996-7-12
|
pubmed:abstractText |
Peroxynitrite (ONOO-) has recently been implicated in connective tissue destruction in vivo. We have studied the effect of ONOO- on the activity of tissue inhibitor of metalloproteinase-1 (TIMP-1) in vitro. The inactivation of TIMP-1 by ONOO- was dose dependent with 50 microM ONOO- reducing the inhibitory activity of TIMP-1 towards gelatinase-A by 50%. High concentrations of ONOO- (500 microM-5 mM) caused protein fragmentation whilst lower concentrations (<250 microM) inactivated TIMP-1 without altering the molecular weight. Inactivation could be blocked by ONOO- scavengers but not by hydroxyl radical scavengers. Our results show that ONOO- is capable of inactivating TIMP-1, a process which could potentiate metalloproteinase-mediated tissue breakdown.
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Feb
|
pubmed:issn |
0014-5793
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
26
|
pubmed:volume |
381
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
21-4
|
pubmed:dateRevised |
2006-11-15
|
pubmed:meshHeading |
pubmed-meshheading:8641430-Amino Acid Sequence,
pubmed-meshheading:8641430-Amino Acids,
pubmed-meshheading:8641430-Electrophoresis, Polyacrylamide Gel,
pubmed-meshheading:8641430-Free Radical Scavengers,
pubmed-meshheading:8641430-Glycoproteins,
pubmed-meshheading:8641430-Humans,
pubmed-meshheading:8641430-Kinetics,
pubmed-meshheading:8641430-Matrix Metalloproteinase 3,
pubmed-meshheading:8641430-Metalloendopeptidases,
pubmed-meshheading:8641430-Molecular Sequence Data,
pubmed-meshheading:8641430-Nitrates,
pubmed-meshheading:8641430-Recombinant Proteins,
pubmed-meshheading:8641430-Substrate Specificity,
pubmed-meshheading:8641430-Tissue Inhibitor of Metalloproteinases
|
pubmed:year |
1996
|
pubmed:articleTitle |
Inactivation of tissue inhibitor of metalloproteinase-1 by peroxynitrite.
|
pubmed:affiliation |
The inflammation Research Group, London Hospital Medical College, University of London, UK.
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|