Metabolic profiling of tyrosine, tryptophan, and glutamate in human urine using gas chromatography–tandem mass spectrometry combined with single SPE cleanup

Brain dopamine and the syndromes of Parkinson and Huntington Clinical, morphological and neurochemical correlations

H. Bernheimer, W Birkmayer, Oleh Hornykiewicz et al. · Journal of the Neurological Sciences · 1973 · 2.7K citations

Life Sciences, Neurology, Neuroscience +16

Relationships between lower plasma L-tryptophan levels and immune-inflammatory variables in depression

Michaël Maes, Herbert Y. Meltzer, Simon Scharpé et al. · Psychiatry Research · 1993 · 164 citations

Nursing, Immunology, Psychiatry +14

Development of a simple and rapid solid phase microextraction-gas chromatography–triple quadrupole mass spectrometry method for the analysis of dopamine, serotonin and norepinephrine in human urine

Attilio Naccarato, Emanuela Gionfriddo, Giovanni Sindona et al. · Analytica Chimica Acta · 2013 · 134 citations

Natural Sciences, Pharmaceutical Analysis, Pharmacology +8

GC-MS-based urine metabolic profiling of autism spectrum disorders

Patrick Emond, Sylvie Mavel, Nacima Aïdoud et al. · Analytical and Bioanalytical Chemistry · 2013 · 111 citations · Full text

Life Sciences, Biochemistry, Psychiatry +5

Simultaneous liquid chromatography tandem mass spectrometric determination of urinary free metanephrines and catecholamines, with comparisons of free and deconjugated metabolites

Mirko Peitzsch, Daniela Pelzel, Stephan Glöckner et al. · Clinica Chimica Acta · 2013 · 97 citations · Full text

Life Sciences, Biochemistry, Endocrinology +13