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- W2898889719 abstract "Aging is often associated with a decreased autophagic activity that contributes to the high sensitivity of aged livers to ischemia reperfusion injury (IRI). Blood from young animals can positively affect aged animals. This study was designed to evaluate the effect of young plasma in a model of liver IRI in aged rats. Aged rats were treated with pooled plasma collected from young rats before ischemia. Administration of young plasma restored aging-induced suppression in hepatic autophagic activity and reduced liver IRI. Inhibition of the young-plasma-restored autophagic activity abrogated the beneficial effect of young plasma against liver IRI. Similarly, young serum restored autophagic activity and reduced cellular injury after hypoxia/reoxygenation (H/R) in primary old rat hepatocytes. Mechanistic studies showed thatadministration of young plasma increased AMPK phosphorylation and led to unc-51-like autophagy activating kinase (ULK)1 activation. Furthermore, AMPK-inhibition abrogated the young serum-induced ULK1 activation and autophagic activity and diminished the protective action of young serum against H/R injury in primary old rat hepatocytes, whereas AMPK-activation potentiated the effects of young serum. Young plasma could restore age-impaired autophagy, at least in part, via AMPK/ULK1 signaling. Restoration of age-impaired autophagic activity may be a critical contributing mechanism to young-plasma-afforded protection against liver IRI in aged rats.-Liu, A., Yang, J., Hu, Q., Dirsch, O., Dahmen, U., Zhang, C., Gewirtz, D. A., Fang, H., Sun, J. Young plasma attenuates age-dependent liver ischemia reperfusion injury." @default.
- W2898889719 created "2018-11-09" @default.
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- W2898889719 date "2018-11-01" @default.
- W2898889719 modified "2023-10-01" @default.
- W2898889719 title "Young plasma attenuates age‐dependent liver ischemia reperfusion injury" @default.
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- W2898889719 doi "https://doi.org/10.1096/fj.201801234r" @default.
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