Collagenases
Mostrando 1-12 de 49 artigos, teses e dissertações.
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1. Collagenolytic enzymes produced by fungi: a systematic review
Abstract Specific proteases capable of degrading native triple helical or denatured collagen have been required for many years and have a large spectrum of applications. There are few complete reports that fully uncover production, characterization and purification of fungi collagenases. In this review, authors searched through four scientific on line data b
Braz. J. Microbiol.. Publicado em: 2017-03
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2. Análise do padrão de expressão de MMP-2, -9 e -8 em tecido humano pulpar normal e inflamado / Analysis of the expression perfile of MMP-2, -9 and -8 in normal and inflamed human pulp tissue
As metaloproteinases da matriz (MMPs) foram relacionadas a diversas doenças inflamatórias como artrite e também ao câncer. O presente trabalho tem por objetivo estabelecer o papel da MMP-2, MMP-9 e MMP-8 no processo de inflamação pulpar. Foram adotadas as seguintes hipóteses nulas: (1) o padrão de expressão das MMP-2, MMP-9 e MMP-8 não sofre altera
Publicado em: 2009
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3. Secreted Versus Membrane-anchored Collagenases: RELATIVE ROLES IN FIBROBLAST-DEPENDENT COLLAGENOLYSIS AND INVASION*
Fibroblasts degrade type I collagen, the major extracellular protein found in mammals, during events ranging from bulk tissue resorption to invasion through the three-dimensional extracellular matrix. Current evidence suggests that type I collagenolysis is mediated by secreted as well as membrane-anchored members of the matrix metalloproteinase (MMP) gene fa
American Society for Biochemistry and Molecular Biology.
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4. Collagenases in human synovial fluid
An enzyme which degrades native collagen at neutral pH has been isolated from cultures of rheumatoid synovium in vitro, but little or no collagenolytic activity has been found in homogenates of fresh rheumatoid synovium. Similar to most other mammalian collagenases this synovial enzyme is readily inhibited by serum proteins. Proteins of synovial fluid are de
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5. Granulocyte collagenase: selective digestion of type I relative to type III collagen.
Collagenases produced by human polymorphonuclear leukocytes, human lung fibroblasts, and rabbit pulmonary alveolar macrophages were compared in their ability to digest soluble native type I and type III collagens. While the fibroblast and macrophage collagenases attacked the two substrates at approximately equal rates, the leukocyte collagenase attacked type
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6. Enhanced cleavage of type II collagen by collagenases in osteoarthritic articular cartilage.
We demonstrate the direct involvement of increased collagenase activity in the cleavage of type II collagen in osteoarthritic human femoral condylar cartilage by developing and using antibodies reactive to carboxy-terminal (COL2-3/4C(short)) and amino-terminal (COL2-1/4N1) neoepitopes generated by cleavage of native human type II collagen by collagenase matr
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7. Bacterial collagenases and collagen-degrading enzymes and their potential role in human disease.
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8. Transcriptional regulation of collagenase (MMP-1, MMP-13) genes in arthritis: integration of complex signaling pathways for the recruitment of gene-specific transcription factors
Matrix metalloproteinase (MMP)-1, MMP-8 and MMP-13 are interstitial collagenases that degrade type II collagen in cartilage; this is a committed step in the progression of rheumatoid arthritis and osteoarthritis. Of these enzymes, the expression of MMP-1 and MMP-13 is substantially increased in response to IL-1 and tumor necrosis factor-α, and elevated leve
BioMed Central.
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9. Collagenolytic Activity of Some Marine Bacteria1
Reconstituted, acid-extracted collagen was used to prepare a medium to screen proteolytic marine bacteria for their ability to elaborate collagenolytic enzymes. The medium was resistant to solubilization by trypsin, hyaluronidase, chondroitinase ABC, and various marine proteinases, but was readily hydrolyzed by commercial Clostridium collagenases. Eighty-sev
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10. Novel Regulation of Type IV Collagenase (Matrix Metalloproteinase-9 and -2) Activities by Transforming Growth Factor-β1 in Human Prostate Cancer Cell Lines
The type IV collagenases/gelatinases matrix metalloproteinase-2 (MMP-2) and MMP-9 play a variety of important roles in both physiological and pathological processes and are regulated by various growth factors, including transforming growth factor-β1 (TGF-β1), in several cell types. Previous studies have suggested that cellular control of one or both collag
The American Society for Cell Biology.
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11. Collagenase unwinds triple-helical collagen prior to peptide bond hydrolysis
Breakdown of triple-helical interstitial collagens is essential in embryonic development, organ morphogenesis and tissue remodelling and repair. Aberrant collagenolysis may result in diseases such as arthritis, cancer, atherosclerosis, aneurysm and fibrosis. In vertebrates, it is initiated by collagenases belonging to the matrix metalloproteinase (MMP) famil
Nature Publishing Group.
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12. Specificity of the anticollagenase action of tetracyclines: relevance to their anti-inflammatory potential.
The concentrations of doxycycline and 4-de-dimethylaminotetracycline required to inhibit 50% of collagenase activity were found to be 15 to 30 microM for human neutrophil and gingival crevicular fluid collagenases. Fibroblast collagenase was relatively resistant to inhibition by tetracyclines; the 50% inhibitory concentrations of doxycycline and 4-de-dimethy