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- W1982371057 abstract "Uptake of [14C]-adenosine into freshly dispersed rat hepatocytes was inhibited 44% by dipyridamole (50 microM) and 60% by nitrobenzylthioinosine (NBTI, 20 microM). The results are consistent with the known ability of these drugs to inhibit adenosine transport in other cell types. The nucleotide analogue, alpha, beta-methylene adenosine diphosphate (AOPCP, 50 microM), inhibited by 84% the degradation of exogenous 5' AMP that occurred rapidly when this substrate alone was presented to isolated hepatocytes. This confirms the ecto-5'-nucleotidase inhibitory properties of this analogue in isolated hepatocytes. During hypoxic incubation, isolated hepatocytes released adenosine, which accumulated in the extracellular volume. Dipyridamole and NBTI each markedly attenuated this extracellular adenosine accumulation. In contrast, AOPCP had no inhibitory effect on net hypoxic adenosine release. It is concluded that hypoxic rat hepatocytes produce adenosine intracellularly and that this adenosine is released via facilitated diffusion to the extracellular space, based on the inhibition observed with the transport inhibitors. The plasma membrane enzyme ecto-5'-nucleotidase does not appear to participate in hypoxic adenosine release from these cells as indicated by the lack of effect of the nucleotidase inhibitor, AOPCP." @default.
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- W1982371057 date "1985-06-01" @default.
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- W1982371057 title "The mechanism of adenosine release from hypoxic rat liver cells" @default.
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- W1982371057 doi "https://doi.org/10.1111/j.1476-5381.1985.tb08880.x" @default.
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