Abstract
Hepatic injury has been associated with nicotinic acid treatment of schizophrenia and hypercholesterolemia. This association was implicated when the liver and biliary tract were not visualized after 99mTc-HIDA in a patient taking 3 g daily of nicotinic acid. We studied hepatic transport of 99mTc-PIPIDA both in vitro in isolated hepatocytes and in vivo in rabbits pretreated with nicotinic acid to further examine this association. Nicotinic acid increased uptake of PIPIDA by isolated hepatocytes and 7 days of nicotinic acid treatment in rabbits produced no abnormalities in hepatic uptake, gallbladder visualization, or biliary excretion of PIPIDA. We conclude that nicotinic acid does not have an inhibitory effect on uptake of biliary imaging agents and actually may be useful in enhancing hepatic imaging in patients with reduced liver function.
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