Results 221 to 230 of about 9,923 (262)

The action of L‐dihydroxyphenylalanine in patients receiving nialamide

Clinical Pharmacology & Therapeutics, 1965
Nialamide produces effective monamine oxidase inhibition resulting in a three‐ to fivefold increase in tryptamine excretion when administered in a dose of 100 mg. for 10 days. L‐Dihydroxyphenylalanine, given in a dose of 75 to 100 mg. to normal volunteers receiving nialamide in a dose of 100 mg.
D G, FRIEND, W R, BELL, N S, KLINE
openaire   +2 more sources

Stability of collagen in the presence of 3,4-dihydroxyphenylalanine (DOPA)

Journal of Photochemistry and Photobiology B: Biology, 2009
Many cross-linking agents for collagen are available with varying levels of toxicity and some are in use in biomedical implants of collagen. L-DOPA (3,4-dihydroxyphenylalanine), a neurotransmitter, is a naturally present compound in the living system and is the target in therapeutic strategy of Parkinson's disease.
R, Usha, A, Rajaram, T, Ramasami
openaire   +2 more sources

A method for the determination of 3,4-dihydroxyphenylalanine (DOPA) in brain

Naunyn-Schmiedeberg's Archives of Pharmacology, 1972
The method is an extension of the chromatographic separation procedure for 5-HIAA and 5-HTP published by Lindqvist (1971). Brain tissue is extracted with perchloric acid. After adjustment of the pH to 2 the extract is passed through a Dowex 50W, X-4 column.
W, Kehr, A, Carlsson, M, Lindqvist
openaire   +2 more sources

ADMINISTRATION OF DIHYDROXYPHENYLALANINE TO PARKINSONIAN PATIENTS.

Canadian Medical Association journal, 1996
Dihydroxyphenylalanine (dopa), the metabolic precursor of dopamine, was administered to 10 parkinsonian patients in oral doses of 1-5 g. and intravenous doses of 0.2-0.5 g. Increases in dopamine excretion of 100- to 1000-fold following the dopa administration indicated that dopa was being absorbed and metabolized. Only two of the 10 patients showed any
P L, MCGEER, L R, ZELDOWICZ
openaire   +1 more source

Excretion of 3,4-dihydroxyphenylalanine in urine

Biochimica et Biophysica Acta (BBA) - General Subjects, 1961
T, GERRITSEN, S C, COPPS, H A, WAISMAN
openaire   +2 more sources

Remission in dihydroxyphenylalanine‐responsive dystonia

Movement Disorders, 1995
M, Di Capua, E, Bertini
openaire   +2 more sources

Dihydroxyphenylalanine transaminase

1997
Dietmar Schomburg, Dörte Stephan
openaire   +1 more source

L-dihydroxyphenylalanine

2006
openaire   +2 more sources

Microbiological synthesis of L-3,4-dihydroxyphenylalanine

Journal of the American Chemical Society, 1969
C J, Sih, P, Foss, J, Rosazza, M, Lemberger   +3 more
openaire   +2 more sources

A High Performance Liquid Chromatography Method for Measuring Brain Dihydroxyphenylalanine Levels and Dopamine Synthesis Rates

Journal of Neurochemistry, 1980
Boris Tabakoff
exaly