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Effect of Escherichia coli endotoxin on ascorbic acid transport in isolated adrenocortical cells

Effect of Escherichia coli endotoxin on ascorbic acid transport in isolated adrenocortical cells

Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine 193(4): 280-284

The active uptake of ascorbic acid by isolated rat adrenocortical cells increases with ascorbic acid concentration, depends on time and calcium, and is inhibited by ACTH concentrations required for maximal steroidogenesis. Lipopolysaccharide of Escherichia coli 0111:B4 modifies the ascorbic acid uptake in a calcium-dependent manner. At low calcium concentrations, lipopolysaccharide exerts a stimulatory effect on ascorbic acid transport and at high concentrations lipopolysaccharide produces a dose-dependent inhibitory effect. This inhibition of the ascorbic acid transport by the endotoxin can alter the ascorbic acid accumulation in the adrenal gland during endotoxin shock.

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Accession: 039902030

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PMID: 2181454

DOI: 10.3181/00379727-193-43036

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