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In animal and human autopsy studies of sepsis, CD4+ splenocytes either undergo apoptosis or are polarized to the Th2 effector subtype. In mice, these changes occur within 24 hours of the onset of sepsis. Preventing the loss of CD4+ T cells and the Th2-polarization of CD4+ T cells provides a significant survival advantage in mouse models of sepsis. The molecular mechanism(s) for the phenotypic changes...
Background: Apoptosis, a mechanism of cell death prominent in critical illnesses including disseminated inflammation and multiorgan dysfunction syndrome, is characterized by morphologic changes including cell shrinkage, condensation of organelles, blebbing, and chromatin fragmentation. These phenomena suggest substantial changes in cytoskeletal structure. We hypothesized that stress-induced apoptosis...
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