Abstract
Prolyl 4-hydroxylase (PH) is an enzyme that catalyzes an essential step in procollagen synthesis. PH production, as measured by the new ELISA method, was significantly higher in fibroblast cultures from patients with systemic sclerosis (SSc; N = 7) than in cultures from healthy controls (NC; N = 5) (p less than 0.01). Transforming growth factor-beta and tumor necrosis factor-alpha significantly increased PH production, but recombinant interferon-gamma had a significant negative effect on PH production. Since the production of PH is relevant to collagen synthesis by fibroblasts of patients with SSc, regulation of PH production may have therapeutic value.
MeSH terms
-
Cells, Cultured
-
Collagen / metabolism*
-
Cytokines / pharmacology*
-
Enzyme-Linked Immunosorbent Assay
-
Fibroblasts / enzymology*
-
Fibroblasts / pathology
-
Fibrosis / enzymology
-
Fibrosis / pathology
-
Fibrosis / physiopathology
-
Humans
-
Immunoblotting
-
Interferon-gamma / pharmacology
-
Procollagen / metabolism
-
Procollagen-Proline Dioxygenase / metabolism*
-
Radioimmunoassay
-
Recombinant Proteins / pharmacology
-
Scleroderma, Systemic / enzymology*
-
Scleroderma, Systemic / pathology
-
Scleroderma, Systemic / physiopathology
-
Skin / enzymology*
-
Skin / pathology
-
Transforming Growth Factor beta / pharmacology
-
Tumor Necrosis Factor-alpha / pharmacology
Substances
-
Cytokines
-
Procollagen
-
Recombinant Proteins
-
Transforming Growth Factor beta
-
Tumor Necrosis Factor-alpha
-
Interferon-gamma
-
Collagen
-
Procollagen-Proline Dioxygenase