| 6603696 |
Bulychev AG, Veselkina MN: [Effect of inhibitors of energy metabolism and protein synthesis on the process of neutral red segregation in frog erythrocytes]. Tsitologiia. 1983 Apr;25(4):426-33.
Effects of inhibitors of energy metabolism and protein synthesis on Neutral red segregation in frog erythrocytes were studied. Inhibitors of both glycolysis and respiration significantly reduced formation of segregation zones. This influence was most striking with antimycin A, rotenone and cyanide. This indicates that intact respiratory pathways may play an important part in the process of Neutral red segregation. Such uncouplers as FCCP (carbonyl cyanide p-trifluoromethoxyphenylhydrazone) and 2,4-dinitrophenol (DNP) as well as inhibitors of oxidative phosphorylation (arsenate and azide) are also very effective in inhibiting the Neutral red segregation at low concentrations. The effects of these uncouplers and of olygomycin suggest an important role of ATP as an energy source for the segregation process. An inhibitor of protein synthesis, such as cycloheximide, produces some reduction in segregation zones formation. Trapping of Neutral red by protonation could readily explain the high level of this dye accumulation in nucleated erythrocytes. The fact that low concentrations of FCCP and DNP inhibit the process of segregation brings a supporting evidence for the possibility of the ATP-driven proton pump involved in Neutral red segregation. |
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