Linked Life Data

7745546

Source:http://linkedlifedata.com/resource/pubmed/id/7745546

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1995-6-12
pubmed:abstractText
The molecular mechanisms of jaw cyst expansion probably involve interactions of matrix metalloproteinases (MMPs) and the tissue inhibitors of MMPs (TIMPs). In this study, molecular species of gelatinases present in neutral salt extracts of cyst walls and cyst fluids were characterized by functional activity measurements (type I gelatin and alpha-casein zymography) and immunologically (Western-blotting). The effects of various protein thiol-group or cysteine-switch reactants involved in the activation of collagenases were studied on cyst gelatinases and a gelatinases purified from human gingival fibroblasts (72 kD MMP-2), gingival keratinocytes (92 kD MMP-9) and polymorphonuclear neutrophilic leukocytes (92 kD MMP-9). Western-blotting revealed the presence of both 92 kD (MMP-9) and 72 kD (MMP-2) gelatinases in cyst wall extracts and cyst fluids. Western-blot studies further suggested that jaw cyst gelatinases were only in part complexed with and thus inhibited by TIMP-1 or TIMP-2, suggesting that both MMP-9 and MMP-2 may participate in cyst expansion. MMP-2 was also partially fragmented to a 68 kD form and additional lower molecular weight proteinases (< 60 kD) were detected by alpha-casein zymography and by Western-blotting, suggesting proteolytic fragmentation. MMP-9 was at least partially activated by all protein-thiol group reactants and rather resistant to oxidative inhibition by hypochlorite (NaOCl); in contrast, MMP-2 was activated by APMA but not at all by gold thioglucose (GTG) and was clearly inactivated by hypochlorite (NaOCl).(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
D
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0904-2512
pubmed:author
pubmed:issnType
Print
pubmed:volume
24
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
78-84
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:7745546-Adolescent, pubmed-meshheading:7745546-Adult, pubmed-meshheading:7745546-Aged, pubmed-meshheading:7745546-Blotting, Western, pubmed-meshheading:7745546-Child, pubmed-meshheading:7745546-Collagenases, pubmed-meshheading:7745546-Extracellular Matrix Proteins, pubmed-meshheading:7745546-Female, pubmed-meshheading:7745546-Gelatinases, pubmed-meshheading:7745546-Glycoproteins, pubmed-meshheading:7745546-Histocytochemistry, pubmed-meshheading:7745546-Humans, pubmed-meshheading:7745546-Jaw Cysts, pubmed-meshheading:7745546-Male, pubmed-meshheading:7745546-Matrix Metalloproteinase 2, pubmed-meshheading:7745546-Matrix Metalloproteinase 9, pubmed-meshheading:7745546-Metalloendopeptidases, pubmed-meshheading:7745546-Middle Aged, pubmed-meshheading:7745546-Neutrophil Activation, pubmed-meshheading:7745546-Proteins, pubmed-meshheading:7745546-Tissue Inhibitor of Metalloproteinase-2, pubmed-meshheading:7745546-Tissue Inhibitor of Metalloproteinases
pubmed:year
1995
pubmed:articleTitle
Identification and characterization of gelatinases/type IV collagenases in jaw cysts.
pubmed:affiliation
Department of Oral and Maxillofacial Surgery, University of Helsinki, Finland.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't