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- W2467732724 abstract "The relationship between the protective effect of fructose 1,6-bisphosphate (F-1,6-P2) against cell injury and the modifications produced in the metabolic fluxes and in the membrane permeability to K+ was studied in isolated rat hepatocytes. Incubation of these cells in the presence of F-1,6-P2 reduced metabolic activity without affecting the ATP content, which suggests a downregulation of the ATP turnover. Using 86Rb+ as a tracer, we analyzed the relationship between these metabolic changes and alterations in K+ fluxes. In the presence of F-1,6-P2 the passive and the active K+ fluxes in hepatocytes decreased. However, the Na(+)-K+ pump from semipurified membranes was not directly affected by F-1,6-P2, which suggests a secondarily induced reduction of Na(+)-K+ pump activity. Moreover, galactosamine-treated cells showed a marked increase in permeability to K+ that was abolished by the presence of F-1,6-P2. This protective effect may be related to the prevention of K+ efflux. The results reported here strongly suggest the induction of channel arrest, and the associated metabolic downregulation, as the primary protective effect of F-1,6-P2, as has been shown in the prevention of galactosamine-induced hepatotoxicity." @default.
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- W2467732724 title "Exogenous fructose 1,6-bisphosphate reduces K+ permeability in isolated rat hepatocytes" @default.
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- W2467732724 doi "https://doi.org/10.1152/ajpcell.1997.273.2.c473" @default.
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