title: Influence of organosulphur compounds from garlic on the secretion of matrix metalloproteinases and their inhibitor TIMP-1 by cultured HUVEC cells.
abstract: Organosulphur compounds from garlic, especially diallyl disulphide (DADS) at non-toxic concentrations, affected production and secretion of some matrix metalloproteinases (MMPs) and of tissue inhibitor of metalloproteinase-1 (TIMP-1), one of their inhibitors, by human umbilical vein endothelial cells. Addition of DADS to the culture medium resulted in a concentration-dependent reduction of secreted MMP-2 protein and activity as well as TIMP-1 protein. In the presence of inducers (phorbol 12-myristate 13-acetate, forskolin and tumor necrosis factor alpha) addition of DADS caused a distinct concentration-dependent decrease of MMP-9 and TIMP-1 secretion, while not affecting MMP-9 mRNA levels. Intracellular protein levels remained low and were not affected. Other organosulphur compounds like allyl mercaptan and S-allylcysteine showed no or less clear effects on MMP-secretion or TIMP-1-secretion. These results suggest that DADS may mediate some of the biological effects ascribed to garlic preparations through affecting MMP-TIMP balance.
authors.affiliation: Institute of Biochemistry, Medical Faculty, University of Leipzig, Leipzig, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Meyer
authors.forename: E
authors.initials: E
authors.lastname: Ueberham
authors.forename: R
authors.initials: R
authors.lastname: Gebhardt
mesh_terms: D000498:Allyl Compounds / Q000633:toxicity*; D002470:Cell Survival / Q000187:drug effects; D002478:Cells, Cultured; D003545:Cysteine / Q000031:analogs & derivatives* / Q000633:toxicity*; D004220:Disulfides / Q000633:toxicity*; D004730:Endothelium, Vascular / Q000201:enzymology*; D005737:Garlic; D006801:Humans; D020782:Matrix Metalloproteinases / Q000378:metabolism*; D013438:Sulfhydryl Compounds / Q000633:toxicity*; D019715:Tissue Inhibitor of Metalloproteinase-1 / Q000378:metabolism*; D014471:Umbilical Veins
chemical_list: D000498:Allyl Compounds; D004220:Disulfides; D013438:Sulfhydryl Compounds; D019715:Tissue Inhibitor of Metalloproteinase-1; C028009:diallyl disulfide; C065299:S-allylcysteine; D020782:Matrix Metalloproteinases; D003545:Cysteine