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Experientia

Effect of lipophilic cations on thiamine transport system in isolated rat hepatocytes.


PMID 3758302

Abstract

The effect of lipophilic cations such as triphenylmethylphosphonium, tetraphenylphosphonium and tetraphenylarsonium in addition to dibenzyldimethylammonium on thiamine transport in isolated rat hepatocytes was studied. Lipophilic cations at the concentration 10 microM almost completely inhibited thiamine uptake. Kinetic studies showed that these compounds were competitive inhibitors with a very high affinity. These results suggest that lipophilic cations in addition to quaternary ammonium compounds also share a common binding site for thiamine in isolated rat hepatocytes.

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T25305
Tetraphenylarsonium(V) chloride hydrate, 97%
C24H20AsCl · xH2O