to clarify the influence of gastric emptying on levodopa-related motor fluctuations in parkinson 's disease , we assessed mobility and plasma levodopa concentrations in 10 patients during five modes of levodopa administration : ( 1 ) standard intermittent oral ( sio ) , ( 2 ) intermittent duodenal ( id ) , ( 3 ) continuous duodenal infusion ( cdi ) , ( 4 ) continuous gastric infusion ( cgi ) , and ( 5 ) controlled-release sinemet ( cr-4 ) .
C0030567
parkinson 's disease
C0023570
levodopa