Results 221 to 230 of about 5,129,032 (295)

Simultaneous Determination of 3,4‐Dihydroxyphenylalanine, 5‐Hydroxytryptophan, Dopamine, 4‐Hydroxy‐3‐Methoxyphenylalanine, Norepinephrine, 3,4‐Dihydroxyphenylacetic Acid, Homovanillic Acid, Serotonin, and 5‐Hydroxyindoleacetic Acid in Rat Cerebrospinal Fluid and Brain by High‐Performance Liquid Chro

Journal of Neurochemistry, 1982
: A method using reversed‐phase ion‐pair high‐performance liquid chromatography with electrochemical detection for the simultaneous determination of tryptophan (TRP), 3,4‐dihydroxyphenylalanine (DOPA), and their metabolites in whole brain, small‐brain ...
J. Wagner, P. Vitali, M. Palfreyman, M. Zraika, Stéphane Huot   +4 more
semanticscholar   +1 more source

Plasma homovanillic acid in adolescents with bulimia nervosa

Psychiatry Research, 2009
Dopaminergic abnormalities in bulimia nervosa have been reported in some studies, but results are not consistent across studies. In the present study, clinical characteristics, plasma level of homovanillic acid (pHVA) and two scales - the Eating Attitudes Test (EAT) and the Beck Depression Inventory (BDI) - were assessed in 36 adolescent bulimia ...
Castro-Fornieles, Josefina, Deulofeu, Ramón, Martínez-Mallen, Esteve, Baeza, Immaculada, Fernandez de la Cruz, Lorena, Lázaro, Luisa, Toro, Josep, Vila, Montserrat, Bernardo, Miquel   +8 more
openaire   +3 more sources

Plasma homovanillic acid levels and subtyping of schizophrenia

Psychiatry Research, 1988
Plasma levels of homovanillic acid (HVA), a major metabolite of dopamine, were measured in a group of 24 schizophrenic inpatients before and during 6 weeks of haloperidol (HAL) treatment. Steady-state plasma HAL levels were measured in parallel with plasma HVA.
W H, Chang, T Y, Chen, C F, Lee, J C, Hung, W H, Hu, E K, Yeh   +5 more
openaire   +2 more sources

An effect of diet on homovanillic acid excretion

Experientia, 1967
Reine Glukose-Diat fuhrt zur Abnahme der Ausscheidung von Homovanillinsaure im Rattenharn. Die Abnahme trat auch dann ein, wenn keinerlei praformierte Homovanillinsaure im Rattenfutter nachgewiesen werden konnte.
A J, Friedhoff, J, Coupet
openaire   +2 more sources

Striatal dopamine and homovanillic acid in Huntington's Disease

Journal of Neural Transmission, 1986
Using tissue taken post mortem from patients with neuropathologically confirmed Huntington's disease and a series of appropriate control cases, GABA, dopamine and homovanillic acid were measured in the caudate nucleus and the putamen. The previously reported loss of GABA in Huntington's disease was confirmed, while no change in dopamine concentrations ...
G P, Reynolds, N J, Garrett
openaire   +2 more sources

Effect of gonadectomy on brain homovanillic acid levels

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1984
The effect produced by gonadectomy on homovanillic acid (HVA) levels in three regions of male and female rat brain during the postnatal period has been studied. In all areas, the HVA levels rise in gonadectomized rats when they are compared with the controls in the first period, but later these levels decrease with respect to the control rats.
M L, Leret, J M, Olid, E, Martinez-Conde
openaire   +2 more sources

Work Exposure to Urban Pollutants and Urinary Homovanillic Acid

Journal of Environmental Science and Health, Part A, 2003
The aim of this study was to evaluate whether traffic policemen exposed to urban pollutants could be at risk of alterations on urinary homovanillic acid in 24h HVA(U) excretion levels, an end product of dopamine catabolism, compared with a control group.
TOMEI, Francesco, ROSATI, Maria Valeria, CIARROCCA, Manuela, Emilia Cherubini, Tiziana Paola Baccolo, Vincenza Anzelmo, Enrico Tomao   +6 more
openaire   +3 more sources

Increase of brain homovanillic acid level induced by metoclopramide

Neuropharmacology, 1975
Abstract Metoelopramide (1 to 10 mg/kg) increased brain homovanillic acid but not 5-hydroxyindoleacetic acid levels and caused no change in dopamine or norepinephrine concentrations. The metoclopramide-induced elevation of homovanillic acid levels is likely to be the result of an accelerated dopamine turnover.
MANGONI A, CORSINI, GIOVANNI UMBERTO, PICCARDI MP, GESSA GL   +3 more
openaire   +3 more sources

Cerebrospinal fluid 5-hydroxyindoleacetic acid and homovanillic acid in psychiatric patients

International Journal of Neuropharmacology, 1969
Abstract Levels of 5HIAA and HVA have been measured in the lumbar CSF of psychiatric patients. Pre-treatment values for CSF 5HIAA were lower in a combined group of psychiatric patients age matched with neurologic patients as controls. CSF 5HIAA was lower than in age matched neurologic controls in each psychiatric diagnostic sub-group; however, these ...
M B, Bowers, G R, Heninger, F, Gerbode
openaire   +2 more sources

Central neurotropic activity of homovanillic acid.

Acta physiologica Polonica, 1982
In experiments performed on male Wistar rats in was shown that i.v.c. administered homovanillic acid (HVA) in a dose of 50 micrograms exerted an inhibitory effect on the locomotor activity. In this dose HVA potentiated also the cataleptogenic effect of haloperidol and amphetamine-induced locomotor hyperactivity.
Z, Kleinrok, A M, Zarkowski
openaire   +1 more source