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Metformin protects against retinal ischemia/reperfusion injury through AMPK-mediated mitochondrial fusion
This study aims to evaluate the protective effect of metformin against retinal I/R injury and its underlying mechanism. I/R induced reduction in retina thickness and cell number in ganglion cell layer, and metformin alleviated I/R-induced retinal injury. Both retinal I/R and simulated ischemia/reperfusion (SIR) in R28 cells down-regulated expression of mitochondrial fusion protein Mfn2 and OPA1, which led to mitochondrial fission. Metformin also alleviated damage in R28 cells, and reversed the alteration in Mfn2 and OPA1, mitochondrial fission and mitochondrial membrane potential (MMP) disruption-induced by I/R or SIR as w...
Source: Free Radical Biology and Medicine - May 30, 2023 Category: Biology Authors: Kun Zhang Tao Wang Gui-Feng Sun Jin-Xing Xiao Li-Ping Jiang Fang-Fang Tou Xin-Hui Qu Xiao-Jian Han Source Type: research

Cisplatin resistance involves a metabolic reprogramming through ROS and PGC-1 α in NSCLC which can be overcome by OXPHOS inhibition.
CONCLUSION: These results describe a new cisplatin resistance mechanism in NSCLC based on a metabolic reprogramming that is therapeutically exploitable through PGC-1α downregulation or OXPHOS inhibitors. PMID: 30880247 [PubMed - as supplied by publisher]
Source: Free Radical Biology and Medicine - March 13, 2019 Category: Biology Authors: Cruz-Bermúdez A, Laza-Briviesca R, Vicente-Blanco RJ, García-Grande A, Coronado MJ, Laine-Menéndez S, Palacios-Zambrano S, Moreno-Villa MR, Ruiz-Valdepeñas AM, Lendinez C, Romero A, Franco F, Calvo V, Alfaro C, Acosta PM, Salas C, Garcia JM, Provencio Tags: Free Radic Biol Med Source Type: research

ROS Modifiers and NOX4 Affect the Expression of the Survivin-Associated Radio-Adaptive Response.
Abstract The survivin-associated radio-adaptive response can be induced following exposure to ionizing radiation in the dose range from 5 to 100 mGy, and its magnitude of expression is dependent upon the TP53 mutational status of cells and ROS signaling. The purpose of the study was to investigate the potential role of ROS in the development of the survivin-associated adaptive response. Utilizing human colon carcinoma HCT116 TP53 wild type (WT) and HCT116 isogenic TP53 null mutant (Mut) cell cultures, the roles of inter- and intracellular ROS signaling on expression of the adaptive response as evidenced by changes...
Source: Free Radical Biology and Medicine - April 13, 2018 Category: Biology Authors: Murley JS, Arbiser JL, Weichselbaum RR, Grdina DJ Tags: Free Radic Biol Med Source Type: research

Activation of AMPK by metformin inhibits TGF-β-induced collagen production in mouse renal fibroblasts
This study suggests that activation of AMPK might be a novel strategy for the treatment of chronic kidney disease (CKD) partially by inhibition of renal interstitial fibrosis (RIF).
Source: Life Sciences - March 4, 2015 Category: Biology Source Type: research

Ferritin heavy chain as main mediator of preventive effect of metformin on mitochondrial damage induced by doxorubicin in cardiomyocyte.
In conclusion, these results deepen our knowledge of the protective action of MET against DOX-induced cardiotoxicity and suggest that therapeutic strategies based on FHC modulation could protect cardiomyocytes from the mitochondrial damage induced by DOX by restoring iron homeostasis. PMID: 24231192 [PubMed - as supplied by publisher]
Source: Free Radical Biology and Medicine - November 11, 2013 Category: Biology Authors: Asensio-Lopez MC, Sanchez-Mas J, Pascual-Figal DA, de Torre C, Valdes M, Lax A Tags: Free Radic Biol Med Source Type: research