Matrix Metalloproteinase-2 and -3 Levels in Patients with Behcet's Disease and Implication for the Presence of Vascular Aneurysm or Neurologic Involvement

Background: Behcet's disease is a systemic vasculitis affecting both arteries and veins, as well as causing recurrent inflammatory multiorgan disease. Vascular involvement is associated with increased mortality and morbidity. Matrix metalloproteinases are released at sites of inflammation and degrade various components of the extracellular matrix. Increased levels of metalloproteinase-9 and metalloproteinase-2 have been previously reported in Behcet's disease. Methods: In this cross-sectional study, metalloproteinase-2 and metalloproteinase-3 serum levels were investigated in 103 patients with Behcet's disease and 69 healthy controls, using Invitrogen immunoassay human metalloproteinase-2 and metalloproteinase-3 ELISA kits. Results: Serum metalloproteinase-2 and metalloproteinase-3 levels were significantly higher in the Behcet's disease group compared to healthy controls. Besides, serum metalloproteinase-3 levels were significantly higher in subgroups of Behcet's disease with aneurysmal vascular involvement and with neurological involvement. However, metalloproteinase-2 and metalloproteinase-3 serum levels did not show a positive correlation with disease activity. Conclusion: Metalloproteinase-2 and -3 may contribute to the complex pathogenesis of Behcet's disease. More importantly, the detection of very high serum levels of metalloproteinase-3 may predict the formation of an aneurysm, or possibly the presence of neurological involvement in Behcet's disease and may lead the clinician to make an earlier diagnosis of these complications in young male patients with high risk.