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- W1964596311 abstract "We studied the intracellular pH of Vero cells parasitised by Trypanosoma cruzi, using different methods: fluorimetric measurement after labelling the cells with the pH-sensitive intracellular fluorescent dye 2',7',-bis-(2-carboxyethyl)-5-(and-6)-carboxyfluorescein, acetoxymethyl ester; flow cytometry; and image analysis after staining the cells with neutral-red vital stain. The results show that the intracellular pH of the parasitised cells rose in comparison with that of the uninfected control cells. A study of the population of parasitised cells made by flow cytometry allowed us to subdivide the cells from the infected cultures into two populations according to their pH as obtained by fluorimetric measurements. Image analysis showed that the cell cytoplasm was more alkaline in the vicinity of the sites containing parasites. Treatment of the parasitised cells with amiloride, ouabain, or with 4.4'-diisothiocyano-2,2'-stilbene disulphate consistently lowered the pH values of the parasitised cells, but not sufficiently to return to the values of the non-parasitised control cells. When the control cells were subject to similar treatments with the inhibitors, only amiloride acidified the cytoplasm to any extent. The basification undergone by the parasitised cells was independent of the transport systems and may be a consequence of the release of NH4+ by the intracellular amastigotes." @default.
- W1964596311 created "2016-06-24" @default.
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- W1964596311 date "1998-12-01" @default.
- W1964596311 modified "2023-09-26" @default.
- W1964596311 title "Intracellular alkalinisation in Vero cells parasitised by Trypanosoma cruzi" @default.
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- W1964596311 doi "https://doi.org/10.1016/s0020-7519(98)00148-9" @default.
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