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• W4225380736 abstract "Mitochondrial biogenesis dysregulation and enhanced endoplasmic reticulum (ER) stress have been implicated in the progression of acute kidney injury (AKI). However, the interaction between these two events remains poorly understood. This study was designed to investigate the role of peroxisome proliferator-activated receptor γ coactivator-1α (PGC-1α) expression, a key factor in mitochondrial biogenesis, in renal ER stress at 24 h after AKI and the underlying mechanisms.Mice were administered recombinant adenovirus encoding murine PGC-1α (100 μl, 1.0 × 109PFU/ml) or vehicle five days before renal ischemia reperfusion (I/R) or sham operation. Twenty-four hours after the operation, kidney and serum samples were collected for evaluation.We first confirmed that PGC-1α transfection elevated the PGC-1α levels and mitochondrial transcripts in the kidney 24 h after AKI. Then, we found PGC-1α overexpression improved renal function. PGC-1α transfection inhibited AKI-induced ER stress through the unfolded protein response (UPR) pathway, resulting in the suppression of apoptosis via both mitochondrial and ER pathways. Further study showed that the expression of mitofusin 2 (Mfn2), an interaction protein between mitochondria and ER, was increased after PGC-1α overexpression. We also found the expression of a novel ER stress regulator, hairy and enhancer of split 1 (Hes1), was decreased after PGC-1α transfection.Our findings reveal that mitochondrial biogenesis plays an important role in the progression of AKI-induced ER stress and provide useful evidence for research on organelle crosstalk during AKI." @default.
• W4225380736 created "2022-05-05" @default.
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• W4225380736 date "2022-02-27" @default.
• W4225380736 modified "2023-09-26" @default.
• W4225380736 title "Peroxisome proliferator-activated receptor γ coactivator-1α (PGC-1α) overexpression alleviates endoplasmic reticulum stress after acute kidney injury" @default.
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• W4225380736 doi "https://doi.org/10.1080/0886022x.2022.2035764" @default.
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