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- W2022232881 abstract "The 14-3-3 family members play a crucial role in the determination of cell fate, exerting their antiapoptotic activity through directly interfering with the critical function of the mitochondrial core proapoptotic machinery. Dimerization of 14-3-3 is vital for the interaction with many of its client proteins and is regulated by phosphorylation. In a previous study, we observed time-dependent neuronal apoptosis during sepsis. Therefore, in the present study, we sought to evaluate the expression of 14-3-3 θ and β isoforms in septic brain and their association with apoptosis. Sepsis was induced by a CLP model in Wistar rats that were sacrificed at predefined time points. Flow cytometric analysis showed a sepsis-induced, time-dependent alteration of 14-3-3 θ and β isoforms in both Neun+ and GFAP+ cells. 14-3-3 θ was linearly correlated with apoptosis, and stratified analysis for alive and apoptotic neuronal cells demonstrated a gradual down-regulation of θ isoform in alive neurons and astrocytes. The phospho-P38 (pP38) MAP kinase levels were altered in a time-dependent manner during sepsis, presenting a peak at 6 hr post-CLP. A significant correlation between the two isoforms of 14-3-3 was observed in septic rats, with the θ isoform predominant at all time points. The hippocampus, Purkinje cells, and glia-like cells showed intense immunohistochemical reactivity for 14-3-3 θ isoform, whereas the choroid plexus showed constantly increased β isoform expression. Our results showed that sepsis alters the expression of both 14-3-3 θ and β isoforms in a time-, cell-, and topography-dependent manner. © 2011 Wiley-Liss, Inc." @default.
- W2022232881 created "2016-06-24" @default.
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- W2022232881 date "2011-05-26" @default.
- W2022232881 modified "2023-10-15" @default.
- W2022232881 title "Alternations of 14-3-3 θ and β protein levels in brain during experimental sepsis" @default.
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- W2022232881 doi "https://doi.org/10.1002/jnr.22673" @default.
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