title: Circulating total and active metalloproteinase-9 and tissue inhibitor of metalloproteinases-1 in patients with systemic lupus erythomatosus.
abstract: We investigated the serum concentration of total metalloproteinase-9 (tMPP-9), active MMP-9 (aMMP-9), and tissue inhibitor of metalloproteinase-1 (TIMP-1) in a group of 41 patients with SLE and 20 healthy controls. Serum levels of tMMP-9 and TIMP-1 were assessed by an enzyme-linked immunosorbent assay (ELISA) and aMMP-9 by fluorometric assay. The tMMP-9 level was lower in SLE patients (mean 262 ng/mL) than in healthy volunteers (mean 325 ng/mL) (P = .048). Similarly, aMMP-9 level was lower in SLE patients (mean 121 ng/mL) than in control group (mean 169 ng/mL) (P = .0355) and lower in active SLE (mean 54 ng/mL) than in inactive disease (mean 99 ng/mL) (P = .033). TIMP-1 level was also lower in SLE patients (mean 181 ng/mL) than in control group (mean 233 ng/mL) (P = .004). In SLE patients, a positive correlation was found between tMMP-9 and aMMP-9 (rho = 0.568; P = .001). We also found a positive correlation of tMMP-9 and TIMP-1 with VEGF concentrations (rho = 0.450, P = .005 and rho = 0.387; P = .018, resp). tMMP-9, aMMP-9, and TIMP-1 serum levels are lower in SLE patients than in healthy control group.
authors.affiliation: Department of Dermatology and Venerology, Medical University of Lodz, Krzemieniecka 5, 94-017 Lodz, Poland.
authors.forename: Ewa
authors.initials: E
authors.lastname: Robak
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Wierzbowska
authors.forename: Magdalena
authors.initials: M
authors.lastname: Chmiela
authors.forename: Liliana
authors.initials: L
authors.lastname: Kulczycka
authors.forename: Anna
authors.initials: A
authors.lastname: Sysa-Jedrejowska
authors.forename: Tadeusz
authors.initials: T
authors.lastname: Robak
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D005260:Female; D005786:Gene Expression Regulation; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000097:blood / Q000201:enzymology*; D008297:Male; D020780:Matrix Metalloproteinase 9 / Q000097:blood* / Q000378:metabolism*; D008875:Middle Aged; D019715:Tissue Inhibitor of Metalloproteinase-1 / Q000097:blood* / Q000378:metabolism*; D042461:Vascular Endothelial Growth Factor A / Q000096:biosynthesis
chemical_list: D019715:Tissue Inhibitor of Metalloproteinase-1; D042461:Vascular Endothelial Growth Factor A; D020780:Matrix Metalloproteinase 9