Its correlation with serum levels of biological markers that could participate in endothelial dysfunction pathways such as NO3−/NO2− ratio, NO2−, citrulline, TNFα, IL-1, IL-6, IL-10, IL-8, osteopontin, ICAM, VCAM, and NO3−/NO2− was determined. This evidence concerns the gene CXCL8 and endothelial dysfunction.