title: Changes of matrix metalloproteinase-9 and its tissue inhibitor (TIMP-1) after autologous hematopoietic stem cell transplantation in multiple sclerosis.
abstract: Elevated levels of matrix metalloproteinase-9 (MMP-9) associates with predictors of multiple sclerosis (MS) activity. We analysed serum levels and mRNA expression of MMP-9 and its inhibitor TIMP-1 in peripheral mononuclear cells of 14 MS patients after autologous hematopoietic stem cell transplantation (AHSCT). All but 2 patients stabilized after AHSCT. A significant decrease of MMP-9 levels was seen up to 36 months after AHSCT. TIMP-1 levels did not change. MMP-9 mRNA levels correlated with the CD4+ T cell count (p<0.0001). The significant and persistent change in MMP-9 activity after AHSCT may be caused in part by the effect of AHSCT in the CD4+ T cell count.
authors.affiliation: Services of Neurology, Hospital Clínic, Institut d'Investigació Biomèdica August Pi i Sunyer (IDIBAPS), University of Barcelona, Villarroel 170, Barcelona 08036, Spain.
authors.forename: Yolanda
authors.initials: Y
authors.lastname: Blanco
authors.forename: Albert
authors.initials: A
authors.lastname: Saiz
authors.forename: Enric
authors.initials: E
authors.lastname: Carreras
authors.forename: Francesc
authors.initials: F
authors.lastname: Graus
mesh_terms: D005500:Follow-Up Studies; D018380:Hematopoietic Stem Cell Transplantation / Q000379:methods*; D006801:Humans; D020780:Matrix Metalloproteinase 9 / Q000235:genetics / Q000378:metabolism*; D009103:Multiple Sclerosis / Q000201:enzymology / Q000378:metabolism / Q000628:therapy*; D012333:RNA, Messenger / Q000378:metabolism; D018709:Statistics, Nonparametric; D013997:Time Factors; D019715:Tissue Inhibitor of Metalloproteinase-1 / Q000235:genetics / Q000378:metabolism*; D014182:Transplantation, Autologous / Q000379:methods*
chemical_list: D012333:RNA, Messenger; D019715:Tissue Inhibitor of Metalloproteinase-1; D020780:Matrix Metalloproteinase 9