Alterations of 86Rb+ fluxes in poliovirus-infected HeLa cells and their dependence on virus replication
Components of the 86Rb+ influx were investigated subsequent to poliovirus infection in the presence and absence of guanidine-HCl, both under normal steady-state conditions and after Na+ preloading of the cells. Measurements of the ouabain-sensitive 86Rb+ uptake indicated a biphasic change in the activity of the Na+, K+ pump in the course of virus infection: a transient increase in the second hour postinfection, that was detectable only after Na+ preloading and inhibition after 3 hr. The enhanced activity of the Na+, K+ pump was not affected, while the decrease later was fully prevented by the antiviral agent guanidine-HCl. The piretanide-sensitive 86Rb+ uptake due to the Na+, K+, 2 Cl- cotransport system also became strongly inhibited beginning in the second hour postinfection. The inhibition of this transport system was partially antagonized by guanidine-HCl. The remaining 86Rb+ influx in the presence of ouabain and piretanide increased in the third hour postinfection. The latter change in 86Rb+ influx, indicating an increased permeability to monovalent cations was completely abolished by guanidine-HCl.
- Research Organization:
- Abteilung Molekularbiologie, Physiologisch-Chemisches Institut, Universitaet Hamburg, Federal Republic of Germany
- OSTI ID:
- 6549804
- Journal Information:
- Virology; (United States), Vol. 136:2
- Country of Publication:
- United States
- Language:
- English
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550701* - Microbiology- Tracer Techniques