Background/aims: To evaluate whether aqueous humor levels of asymmetric dimethylarginine (ADMA) are associated with monocyte chemoattractant protein-1 (MCP-1).
Methods: Aqueous humor levels of ADMA and MCP-1 were measured by HPLC and ELISA, respectively in 31 uveitis samples and 9 cataract control samples.
Results: Aqueous humor ADMA and MCP-1 levels were significantly higher in infectious or non-infectious uveitis patients than in controls (0.67±0.04 nmol/ml vs 0.55 ±0.03 nmol/ml vs 0.43±0. 04 nmol/ml (P<0.01) and 29.0±11.3 ng/ml vs 4.5±1.2 ng/ml vs 0.47 ±0.1 ng/ml (P<0.01), respectively). A positive correlation between ADMA and MCP-1 levels in aqueous humor was found in control and uveitis patients (r=0.33, P<0.05).
Conclusion: The results demonstrated that aqueous humor levels of ADMA were positively associated with MCP-1 in humans. Our present observations suggest that aqueous humor levels of ADMA may be a novel biomarker of inflammation in uveitis.
- aqueous humor
- nitric oxide