In this study, MG was 2.7-fold higher (1326 μg/ml HSA-MG in uninfected DM vs 495 μg/ml HSA-MG in uninfected control, P < 0.05), and glutathione was 2.3-fold (342 nmol/ml uninfected DM vs 777 nmol/ml in uninfected control, P < 0.05) lower in uninfected DM patients compared to uninfected non-DM patients (Fig. 5A,C). Here, MGAM is linked to diabetes mellitus.