Penetration of 35S-lipoate into nucleated and nucleus-free erythrocytes, isolated cells (enterocytes) and accumulating tissue preparations from intestinal mucosa was studied in presence or in absence of other vitamins. Effect on this process of overloading the penetration of 35S-lipoate into rat and pigeon erythrocytes was found to be increased; under these conditions the enterocytes bind less 35S-lipoate than in control animals. Water-soluble vitamins (nicotinate, riboflavine, thiamin and, especially, panthotenate) decreased the rate of 35S-lipoate penetration into the cells. The mixture of the vitamins caused less distinct inhibitory effect, than the panthotenate only.
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Transversal overloading /3.5 and 6 un/ distinctly altered penetration of 14C-nicotinate and 35S-lipoate into cells and mitochondria. Increased secretion of proteins from cells, mitochondria and lysosomes was observed under these experimental conditions, especially in presence of Triton X-100 and in hypotonic media.
View Article and Find Full Text PDFPenetration of 35S-lipoate into nucleated and nucleus-free erythrocytes, isolated cells (enterocytes) and accumulating tissue preparations from intestinal mucosa was studied in presence or in absence of other vitamins. Effect on this process of overloading the penetration of 35S-lipoate into rat and pigeon erythrocytes was found to be increased; under these conditions the enterocytes bind less 35S-lipoate than in control animals. Water-soluble vitamins (nicotinate, riboflavine, thiamin and, especially, panthotenate) decreased the rate of 35S-lipoate penetration into the cells.
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