Eicosanoid Derivative, Lipoxin A4, Guards Against Testicular Ferroptosis in Rat Model of Type II Diabetes by Regulating Nrf2/SLC7A11/GPX4 Pathway

Abstract

Ferroptosis, a type of iron overload-induced cell death, is involved in diabetes-induced testicular dysfunction. Hence, this study was designed to investigate, for the first time, the impact of lipoxin A4 (LXA4) administration on testicular tissue in diabetic rats and explore its probable role in regulating ferroptosis in comparison with the standard ferroptosis inhibitor (ferrostatin-1, Fer-1). Albino rats of Wistar strain were divided into a control group, a type II diabetes mellitus (DM) group, a DM + Fer-1group, and a DM + LXA4 group. Serum levels of iron, insulin, glucose, total cholesterol, triglycerides, and testosterone were assayed. Testicular tissue markers of oxidative stress, ferroptosis, and inflammation were also assessed by different methods. Our results confirmed diabetes-induced testicular injury and disruption of its function via inducement of ferroptosis, but this was ameliorated with LXA4 and Fer-1 administration. However, Fer-1 showed a greater protective effect compared to LXA4 under the conditions of this study. We concluded that LXA4 partially secured the testicular tissue of diabetic rats against ferroptosis via augmenting the antioxidant Nrf2/SLC7A11/GPX4 pathway. Therefore, LXA4 may have a possible protective effect on the testicular tissue of diabetic patients.