Determination of l-3,4-Dihydroxyphenylalanine in blood by high-performance liquid chromatography after solvent extraction

Tyrosine Hydroxylase

1964 • 2,038 citations

Simple and fast solvent extraction system for selective and quantitative isolation of adrenaline, noradrenaline and dopamine from plasma and urine

1982 • 437 citations

Analysis of the clinical problems in parkinsonism and the complications of long‐term levodopa therapy

1979 • 319 citations

Isolation of catecholamines in biological fluids by boric acid gel

1977 • 128 citations

Levodopa with benserazide or carbidopa in Parkinson disease

1979 • 59 citations

Determination of DOPA, dopamine, and 5-S-cysteinyl-DOPA in plasma, urine, and tissue samples by high-performance liquid chromatography with electrochemical detection

1984 • 49 citations

Simultaneous measurement of DOPA, DOPAC, and catecholamines in plasma by liquid chromatography with electrochemical detection.

1984 • 46 citations

DOPA and amino acid levels in plasma and cerebrospinal fluid of patients with parkinson's disease before and during treatment with L-dOPA

1973 • 35 citations

Metabolism of carbidopa, (-)-L-.alpha.-hydrazino-3,4-dihydroxy-.alpha.-methylbenzenepropanoic acid monohydrate, in the human, rhesus monkey, dog, and rat

1975 • 32 citations

Simple and fast analysis of adrenaline and noradrenaline in plasma on microbore high-performance liquid chromatography columns using fluorimetric detection

1985 • 29 citations

Application of paired-ion high-pressure liquid column chromatography to the analysis of l-3,4-dihydroxyphenylalanine metabolites

1978 • 28 citations

Determination of the biogenic amines and their major metabolites in single human brain tissue samples using a combined extraction procedure and high-performance liquid chromatography with electrochemical detection

1985 • 26 citations

High-performance liquid chromatography with amperometric detection of plasma L-3,4-dihydroxyphenylalanine in parkinsonian patients

1983 • 17 citations

Determination of urinary and plasma dihydroxyphenylalanine by coupled-column high-performance liquid chromatography with C8 and C18 stationary phases

1984 • 17 citations

Determination of L-3,4-dihydroxyphenylalanine in plasma and urine by high-performance liquid chromatography with fluorescence detection.

1987 • 14 citations

On-line purification for the determination of catecholamines by liquid chromatography

1989 • 9 citations

EDUCATIONAL LECTURE ON TREATMENT OF PARKINSON DISEASE

1982 • 1 citations