Abstract
AimTo study the association of serum levels of anti-myeloperoxidase (MPO) antibody with retinal photoreceptor ellipsoid zone (EZ) disruption in diabetic retinopathy. MethodsConsecutive patients with type 2 DM [diabetes mellitus with no retinopathy (NODR; n=20); non-proliferative diabetic retinopathy (NPDR; n=18); proliferative diabetic retinopathy (PDR; n=16)] and healthy controls (n=20) between the ages of 40 and 65years were included. Disruption of EZ was graded by spectral domain optical coherence tomography as no disruption of EZ and disrupted EZ. The serum levels of anti-MPO antibody was analyzed using standard protocol. Association between the variables was evaluated using multiple regression analysis. ResultsA significant difference was found between the serum levels of anti-MPO antibody in various study groups (p<0.001). A positive association was found between EZ disruption and levels of anti-MPO antibody [adjusted odd's ratio (AOR)=1.079, CI 1.010–1.124, p=0.04]. A significant positive correlation was found between logMAR visual acuity and grade of disruption (AOR=1.008, CI 1.006–5.688, p=0.04). ConclusionsAn increased serum anti-MPO antibody levels is associated with retinal photoreceptor EZ disruption and decreased visual acuity in diabetic retinopathy.
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