MPO and alopecia areata: Moreover, Glickman et al. [7] demonstrated that the serum levels of various atherosclerosis and cardiovascular biomarkers, including E193 selectin, matrix metalloproteinases, lectin-type oxidized LDL 194 receptor 1, myeloperoxidase, fatty acid binding protein, P195 selectin, oncostatin M, proteinase-3, peptidoglycan recognition protein 1, and caspase-3, were increased in patients with moderate-to-severe alopecia areata in comparison with the controls.