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Analysis of systemic endothelin-1, matrix metalloproteinase-9, macrophage chemoattractant protein-1, and high-sensitivity C-reactive protein in normal-tension glaucoma.
Current Eye Research 2012 December
PURPOSE: To investigate the roles of vascular dysregulation and inflammation in normal-tension glaucoma (NTG), we determined the plasma levels of endothelin-1 (ET-1), matrix metalloproteinase-9 (MMP-9), macrophage chemoattractant protein-1 (MCP-1), and high-sensitivity C-reactive protein (hs-CRP).
MATERIALS AND METHODS: Forty-five patients with NTG and age-matched 35 healthy controls were enrolled in this study. Blood samples from all subjects were assayed for ET-1, MMP-9, MCP-1, and hs-CRP concentrations and other systemic factors.
RESULTS: There were no significant differences in hemoglobin, hematocrit, RBC count, WBC count, platelet count, fasting glucose, HbA1c, total cholesterol, triglyceride, LDL, and HDL between the NTG and control groups. The systemic levels of ET-1 and MCP-1 were significantly higher in the NTG group than in the control group (p = 0.05 and 0.02, respectively). The MMP-9 and hs-CRP levels were not significantly different between the NTG and control groups.
CONCLUSIONS: After excluding patients with cardiovascular and other systemic diseases, plasma ET-1 and MCP-1 levels were elevated in patients with NTG. The MMP-9 and hs-CRP levels were not significantly different in NTG. Increased ET-1 and MCP-1 levels suggest that ischemia/inflammation may play a role in the pathogenesis of NTG.
MATERIALS AND METHODS: Forty-five patients with NTG and age-matched 35 healthy controls were enrolled in this study. Blood samples from all subjects were assayed for ET-1, MMP-9, MCP-1, and hs-CRP concentrations and other systemic factors.
RESULTS: There were no significant differences in hemoglobin, hematocrit, RBC count, WBC count, platelet count, fasting glucose, HbA1c, total cholesterol, triglyceride, LDL, and HDL between the NTG and control groups. The systemic levels of ET-1 and MCP-1 were significantly higher in the NTG group than in the control group (p = 0.05 and 0.02, respectively). The MMP-9 and hs-CRP levels were not significantly different between the NTG and control groups.
CONCLUSIONS: After excluding patients with cardiovascular and other systemic diseases, plasma ET-1 and MCP-1 levels were elevated in patients with NTG. The MMP-9 and hs-CRP levels were not significantly different in NTG. Increased ET-1 and MCP-1 levels suggest that ischemia/inflammation may play a role in the pathogenesis of NTG.
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