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- W2100030230 abstract "Abstract Entamoeba histolytica , the protozoan parasite of humans, manifests constitutive endocytosis to obtain nutrients and, when induced to express invasive behavior, as a means of ingesting and processing host cells and tissue debris. E. histolytica trophozoites were grown in liquid axenic medium that contained fluorescently labeled fluid‐phase markers, so that the kinetics of uptake, the transit of loaded endosomes through the cytoplasm, and the time of release of the markers could be monitored by flow cytometry. Confocal microscopy of live trophozoites revealed uptake of fluid by avid macropinocytosis and the occurrence of fusion between young and older endosomes, as well as between pinosomes and phagosomes containing bacteria. Endosomes were rapidly acidified, then gradually neutralized; finally, indigestible material was released. Transit of endosomes containing fluid‐phase markers required about 2 h. Uptake and release of fluid‐phase markers were impaired by drugs that inhibited actin dynamics and actin‐myosin interaction; uptake was also impaired by inhibition of PI 3‐kinase. A striking feature of the trophozoites was the great heterogeneity of their endocytic behavior. Cell Motil. Cytoskeleton 59:215–226, 2004. © 2004 Wiley‐Liss, Inc." @default.
- W2100030230 created "2016-06-24" @default.
- W2100030230 creator A5003841894 @default.
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- W2100030230 date "2004-10-25" @default.
- W2100030230 modified "2023-10-16" @default.
- W2100030230 title "Dynamics of endocytic traffic of<i>Entamoeba histolytica</i>revealed by confocal microscopy and flow cytometry" @default.
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- W2100030230 doi "https://doi.org/10.1002/cm.20038" @default.
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