Aparicio-Trejo 2020 Free Radic Biol Med

From Bioblast
Publications in the MiPMap
Aparicio-Trejo OE, Avila-Rojas SH, Tapia E, Rojas-Morales P, LeΓ³n-Contreras JC, MartΓ­nez-Klimova E, HernΓ‘ndez-Pando R, SΓ‘nchez-Lozada LG, Pedraza-Chaverri J (2020) Chronic impairment of mitochondrial bioenergetics and Ξ²-oxidation promotes experimental AKI-to-CKD transition induced by folic acid. Free Radic Biol Med 154:18-32.

Β» PMID: 32360615

Aparicio-Trejo OE, Avila-Rojas SH, Tapia E, Rojas-Morales P, Leon-Contreras JC, Martinez-Klimova E, Hernandez-Pando R, Sanchez-Lozada LG, Pedraza-Chaverri J (2020) Free Radic Biol Med

Abstract: Recent studies suggest that mitochondrial bioenergetics and oxidative stress alterations may be common mechanisms involved in the progression of renal damage. However, the evolution of the mitochondrial alterations over time and the possible effects that their prevention could have in the progression of renal damage are not clear. Folic acid (FA)-induced kidney damage is a widely used experimental model to induce acute kidney injury (AKI), which can evolve to chronic kidney disease (CKD). Therefore, it has been extensively applied to study the mechanisms involved in AKI-to-CKD transition. We previously demonstrated that one day after FA administration, N-acetyl-cysteine (NAC) pre-administration prevented the development of AKI induced by FA. Such therapeutic effect was related to mitochondrial preservation. In the present study, we characterized the temporal course of mitochondrial bioenergetics and redox state alterations along the progression of renal damage induced by FA. Mitochondrial function was studied at different time points and showed a sustained impairment in oxidative phosphorylation capacity and a decrease in Ξ²-oxidation, decoupling, mitochondrial membrane potential depolarization and a pro-oxidative state, attributed to the reduction in activity of complexes I and III and mitochondrial cristae effacement, thus favoring the transition from AKI to CKD. Furthermore, the mitochondrial protection by NAC administration before AKI prevented not only the long-term deterioration of mitochondrial function at the chronic stage, but also CKD development. Taken together, our results support the idea that the prevention of mitochondrial dysfunction during an AKI event can be a useful strategy to prevent the transition to CKD.

Copyright Β© 2020. Published by Elsevier Inc. β€’ Keywords: Folic acid, Mitochondrial bioenergetics, Mitochondrial oxidative stress, N-acetyl-cysteine, Renal damage progression β€’ Bioblast editor: Plangger M β€’ O2k-Network Lab: MX Mexico City Pedraza Chaverri J

Labels: MiParea: Respiration  Pathology: Other 

Organism: Rat  Tissue;cell: Kidney  Preparation: Isolated mitochondria 

Regulation: mt-Membrane potential, Fatty acid  Coupling state: LEAK, OXPHOS  Pathway: F, N, S, ROX  HRR: Oxygraph-2k, O2k-Fluorometer 

2020-05, AmR 

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