Serological inflammatory factors as biomarkers for anatomic response in diabetic macular edema treated with anti-VEGF

Journal of Diabetes and Its Complications
Pedro BritoRufino Silva

Abstract

To study the relationship between systemic pro-inflammatory factors and macular structural response to intravitreal bevacizumab for diabetic macular edema (DME). Prospective study including 30 cases with DME, treated with bevacizumab and a minimum follow-up of 6 months. All cases underwent baseline laboratory testing for cardiovascular risk (high sensitivity C-reactive protein (hsCRP), homocystein), dyslipidemia, renal dysfunction and glucose control. Serum levels of VEGF, soluble ICAM-1, MCP-1 and TNF-α were assessed by enzyme-linked immunosorbent assay kits. Significant associations between systemic factors and quantitative and qualitative spectral-domain optical coherence macular features were analyzed. A mean of 4.82 ± 0.56 intravitreal injections was performed, resulting in significant improvement of central foveal thickness (CFT) (p < 0.001). A significant association with third month CFT decrease <10% was found for hsCRP (3.33 ± 2.01 vs 1.39 ± 1.15 mg/l, p = 0.007) and ICAM1 (975.54 ± 265.49 vs 727.07 ± 336.09 pg/ml, p = 0.012). ROC curve analysis indicated hsCRP and ICAM1 as significant biomarkers for 3rd month reduced anatomic response (area under the curve (AUC) = 0.807, p = 0.009 for hsCRP; AUC = 0.788, p = 0.014 for...Continue Reading

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