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- W1969894789 abstract "Cultured rat hepatocytes were incubated in medium containing 1.0 mM oleic acid. The incorporation of [3H]glycerol into cell-associated and medium triacylglycerols was measured after 2 h incubation. More than 95% of the secreted [3H]triacylglycerols were recovered in the very low density lipoprotein (VLDL) fraction (d<1.006). Chloroquine and other lysosomotropic amines promoted a marked decrease in [3H]triacylglycerol secretion from the hepatocytes while the synthesis was unaffected. At 50–200 μM final concentration, chloroquine inhibited secretion of triacylglycerols by 70–90% of the control. Similar results were obtained when the mass of secreted triacylglycerols was measured. Chloroquine caused decreased secretion of [3H]triacylglycerols after 15–30 min incubation and the inhibitory effect was completely reversible within 1–2 h after washout of chloroquine. The reduced triacylglycerol secretion was not due to increased reuptake of secreted lipoproteins or decreased protein synthesis caused by chloroquine. Electron microscopy of chloroquine-treated cells showed that the inhibition of VLDL secretion occurs at or prior to the level of the Golgi apparatus. These results suggest that chloroquine interferes with crucial steps in the secretory process and/or that lysosomal function could be essential for secretion of VLDL." @default.
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- W1969894789 date "1984-02-01" @default.
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- W1969894789 title "Inhibition by chloroquine of the secretion of very low density lipoproteins by cultured rat hepatocytes" @default.
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- W1969894789 doi "https://doi.org/10.1016/0167-4889(84)90049-1" @default.
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