Modulation of the expression of matrix metalloproteinase and tissue inhibitors of metalloproteinases by TGF-β1 and IGF-1 in primary human articular and bovine nasal chondrocytes stimulated with TNF-α
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Hui, W
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Newcastle Univ, Sch Med, Dept Rheumatol, Newcastle Upon Tyne NE2 4HH, Tyne & Wear, EnglandNewcastle Univ, Sch Med, Dept Rheumatol, Newcastle Upon Tyne NE2 4HH, Tyne & Wear, England
Hui, W
[1
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Rowan, AD
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Newcastle Univ, Sch Med, Dept Rheumatol, Newcastle Upon Tyne NE2 4HH, Tyne & Wear, EnglandNewcastle Univ, Sch Med, Dept Rheumatol, Newcastle Upon Tyne NE2 4HH, Tyne & Wear, England
Rowan, AD
[1
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Cawston, T
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Newcastle Univ, Sch Med, Dept Rheumatol, Newcastle Upon Tyne NE2 4HH, Tyne & Wear, EnglandNewcastle Univ, Sch Med, Dept Rheumatol, Newcastle Upon Tyne NE2 4HH, Tyne & Wear, England
Cawston, T
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[1] Newcastle Univ, Sch Med, Dept Rheumatol, Newcastle Upon Tyne NE2 4HH, Tyne & Wear, England
Tumour necrosis factor-alpha (TNF-alpha) was able to promote collagen breakdown from bovine cartilage in explant culture. This release was dependent upon matrix metalloproteinases (MMPs) and could be prevented by transforming growth factor-beta1 (TGF-beta1) or insulin-like growth factor-1. Both growth factors reduced the expression and secretion of collagenase enzymes, and TGF-beta1 induced tissue inhibitor of metalloproteinase production. This study shows for the first time that these anabolic growth factors can protect cartilage against TNF-alpha -induced destruction. (C) 2001 Academic Press.