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Interestingly, a specific GPX1 polymorphism resulting in a proline-to-leucine transition at position 198 (Pro198Leu) is associated with a reduction in GPx1 activity and found to be more prevalent in Keshan patients

In addition to IgG1 predominance and C1q expression, Hg-induced MGN often has mesangial immune deposits and is phospholipase A2 receptor negative, distinguishing it from idiopathic MGN [36]

Potent free radical scavenging

Furthermore, hyperhomocysteinemia correlated with decreased GPx1 activity and increased oxidative and nitrosative stress (as measured by 3-nitrotyrosine), consistent with a role for GPx1 in modulating endothelial superoxide production and the subsequent ROS-mediated formation of peroxynitrite