Serum levels of matrix metalloproteinases-2 and -9 and their tissue inhibitors in inflammatory neuromuscular disorders.
We monitored serum levels of matrix metalloproteinases (MMPs) and their tissue inhibitors (TIMPs) before and during intravenously applied immunoglobulin (IVIG) therapy in 33 patients with chronic immune-mediated neuropathies and myopathies and 15 controls. Baseline MMP-2 and TIMP-2 serum levels were lower and MMP-9 and TIMP-1 serum levels higher in all patients compared to age-matched controls. Eight days after IVIG treatment, MMP-2, TIMP-2, and TIMP-1 serum levels increased, while MMP-9 serum levels decreased, indicating tissue repair. After 60 days, MMP-9 levels increased, MMP-2 approached normal levels, while TIMP-1 and TIMP-2 serum levels were below day 8 levels, indicating relapsing tissue damage. Comparing the MMP/TIMP results with the clinical courses, IVIG treatment tended to change MMP/TIMP levels in a way that paralleled clinical improvement and relapse. In sum, during a distinct time period, IVIG therapy seems to be able to modulate MMP-mediated tissue repair.
Hurnaus
S
S
Friedrich Baur Institute, Department of Neurology, Ludwig Maximilian University Munich, Munich, Germany.
Mueller-Felber
W
W
Pongratz
D
D
Schoser
B G H
BG
D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D016756:Immunoglobulins, Intravenous / Q000627:therapeutic use*; D007249:Inflammation / Q000097:blood / Q000188:drug therapy / Q000201:enzymology / Q000503:physiopathology; D008297:Male; D020778:Matrix Metalloproteinase 2 / Q000097:blood*; D020780:Matrix Metalloproteinase 9 / Q000097:blood*; D008875:Middle Aged; D018979:Myositis, Inclusion Body / Q000097:blood / Q000188:drug therapy / Q000201:enzymology / Q000503:physiopathology; D009468:Neuromuscular Diseases / Q000097:blood / Q000188:drug therapy / Q000201:enzymology* / Q000503:physiopathology; D019716:Tissue Inhibitor of Metalloproteinase-2 / Q000097:blood*
D016756:Immunoglobulins, Intravenous; D019716:Tissue Inhibitor of Metalloproteinase-2; D020778:Matrix Metalloproteinase 2; D020780:Matrix Metalloproteinase 9