Plasminogen activator inhibitor-1 is involved in interleukin-1ß-induced matrix metalloproteinase expression in murine chondrocytes.
Mod Rheumatol
; 29(6): 959-963, 2019 Nov.
Article
em En
| MEDLINE
| ID: mdl-30220231
ABSTRACT
Objectives:
Interleukin (IL)-1ß and matrix metalloproteinases (MMPs) play important roles in the pathogenesis of osteoarthritis. On the other hand, plasminogen activator inhibitor-1 (PAI-1), an inhibitor of fibrinolysis, exerts functions in the pathogenesis of various diseases. However, the functional roles of PAI-1 in the chondrocytes have been still remained unknown.Methods:
In the present study, we investigated the roles of PAI-1 in the effects of IL-1ß on the chondrocytes using wild-type and PAI-1-deficient mice.Results:
IL-1ß significantly elevated PAI-1 mRNA levels in the chondrocytes from wild-type mice. PAI-1 deficiency significantly blunted the mRNA levels of TGF-ß and IL-6 enhanced by IL-1ß in murine chondrocytes. Moreover, PAI-1 deficiency significantly decreased the mRNA levels of MMP-13, -3 and -9 as well as MMP-13 activity enhanced by IL-1ß in the chondrocytes. In addition, PAI-1 deficiency significantly reversed type II collagen mRNA levels suppressed by IL-1ß in the chondrocytes. On the other hand, active PAI-1 treatment significantly enhanced the mRNA levels of MMP-13, -3 and -9 as well as decreased type II collagen mRNA levels in the chondrocytes from wild-type mice.Conclusion:
We first demonstrated that PAI-1 is involved in MMP expression enhanced by IL-1ß in murine chondrocytes. PAI-1 might be crucial for the cartilage matrix degradation and the impaired chondrogenesis by IL-1ß in mice.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Inibidor 1 de Ativador de Plasminogênio
/
Deleção de Genes
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Condrócitos
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Metaloproteinases da Matriz
Limite:
Animals
Idioma:
En
Revista:
Mod Rheumatol
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Japão