Abstract:
BACKGROUND:Reaction time variability (RTV) is considered a valid endophenotype of attention deficit/hyperactivity disorder (ADHD). It is also often used to examine the efficacy of drug treatment or individual patients' treatment responses and has been furthermore suggested to significantly reduce the potential number of false-positive diagnoses. Among the most commonly investigated candidate genes for ADHD are DRD2, SLC6A3 (DAT), COMT and MAOA. Genetic associations have, however, proven inconclusive or inconsistent. METHODS:Due to the complexity of dopaminergic neurotransmission in the two distinct prosencephalic dopamine pathways, we examined whether the effects of dopamine-related candidate polymorphisms in the genes DRD2, SLC6A3, COMT and MAOA may be differentially associated with discrete subcomponents of RTV, rather than global RTV. A total of 260 healthy volunteers were genotyped for the aforementioned polymorphisms and performed a reaction time paradigm able to distinguish between sensory and motor reaction time. RESULTS:We found that functional polymorphisms in the genes encoding for dopamine-catabolizing enzymes (i.e. COMT and MAOA) are associated with motor RTV but not with sensory RTV, whereas vice versa the gene DRD2 influences sensory but not motor RTV. No significant associations for the gene SLC6A3 (DAT) were found. CONCLUSIONS:Our results give new insight into the inconsistent state of the literature regarding genetic associations of RTV and clearly show that the examination of subcomponents thereof explains far more variance compared to global RTV. This could be of great relevance to the use of RTV in basic research, clinical diagnostics and pharmacological studies examining the efficacy of novel drug treatments.
journal_name
Neuropsychobiologyjournal_title
Neuropsychobiologyauthors
Grant P,Kuepper Y,Wielpuetz C,Hennig Jdoi
10.1159/000360367subject
Has Abstractpub_date
2014-01-01 00:00:00pages
220-6issue
4eissn
0302-282Xissn
1423-0224pii
000360367journal_volume
69pub_type
杂志文章abstract::Cerebrospinal fluid (CSF) homovanillic acid, 5-hydroxyindoleacetic acid, 3-methoxy-4-hydroxyphenylglycol, and somatostatin and beta-endorphin levels were measured in 12 patients with panic disorder before and after 7 months of treatment with alprazolam or imipramine. The concentrations of CSF monoamine metabolites and...
journal_title:Neuropsychobiology
pub_type: 临床试验,杂志文章
doi:10.1159/000118574
更新日期:1989-01-01 00:00:00
abstract::Twenty-seven medicated chronic schizophrenic female patients were tested for right or left turning behavior. No substantial right or left asymmetry was found, nor did the addition of the indirect dopaminergic agonist amantadine influence these results. Previous studies demonstrated left circling preference in chronic ...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000119355
更新日期:1997-01-01 00:00:00
abstract::It is known that P-4502E1 metabolizes both ethanol and acetaldehyde, and that it can be induced after birth by inducers such as ethanol. Genetic polymorphisms in the 5'-flanking region change its transcriptional regulation. Persons who are either hetereozygous or mutant homozygous for CYP2E1 (C1/C2 or C2/C2) can drink...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000070014
更新日期:2003-01-01 00:00:00
abstract::Twenty-two female patients with anorexia nervosa, restricted type, 14-35 years old, were treated with a 4-month course of combined cognitive-behavioral therapy, nutritional counselling and antidepressant drugs (nortriptyline for 7, fluoxetine for 15). Patients were monitored for body mass index (BMI), for eating disor...
journal_title:Neuropsychobiology
pub_type: 临床试验,杂志文章
doi:10.1159/000119213
更新日期:1995-01-01 00:00:00
abstract::Performance on temporal discrimination of time intervals in the range of milliseconds is interpreted by the assumption of an internal clock; the higher the clock rate the better the temporal resolution of the internal clock will be, which is equivalent to more accuracy in timing of brief intervals. Although there is s...
journal_title:Neuropsychobiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1159/000118899
更新日期:1992-01-01 00:00:00
abstract::An association between negative symptoms and frontal cortex abnormalities has been suggested in schizophrenic patients. We tested whether this association can be found when patients' task performance is good and while controlling for possible cortical atrophy. We investigated regional cerebral blood flow with the xeno...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000119262
更新日期:1996-01-01 00:00:00
abstract::The phenotype frequencies of HL-A specificities have been investigated in 47 chronic schizophrenics subdivided in an older and a younger group. The frequency of HL-A 9 was significantly increased in the psychotics as compared to a reference group of 1,263 healthy blood donors, pregnant women and potential kidney donor...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000117496
更新日期:1975-01-01 00:00:00
abstract::The genotypes of the CYP2E1 loci of 35 alcoholic and 130 nonalcoholic (healthy controls) Japanese were investigated to determine the relationship between CYP2E1 (C/D) polymorphism and susceptibility to alcohol dependence. There was a significant (d.f. = 1, chi2 = 11.0, p < 0.001) difference in the CYP2E1 C gene freque...
journal_title:Neuropsychobiology
pub_type: 临床试验,杂志文章
doi:10.1159/000026544
更新日期:1998-11-01 00:00:00
abstract::An auditory event-related potential paradigm was designed to objectively quantify the effects of drugs on the central nervous system (CNS). A series of tones was presented at three random interstimulus intervals (ISI). The amplitude of N1-P2 and the recovery of this complex across ISI appear to be rapid, reliable and ...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000118715
更新日期:1990-01-01 00:00:00
abstract::Genetic polymorphism of the serotonin 5-HT(2A) receptor seems to be associated with therapeutic response to selective serotonin reuptake inhibitors (SSRIs). The present study investigated whether a novel -1438G/A polymorphism in the promoter region of the 5-HT(2A )receptor gene is associated with therapeutic response ...
journal_title:Neuropsychobiology
pub_type: 临床试验,杂志文章
doi:10.1159/000066394
更新日期:2002-01-01 00:00:00
abstract:BACKGROUND/AIMS:Neurotrophins such as brain-derived neurotrophic factor (BDNF) are vital for neuronal survival and adaptive plasticity. With high BDNF gene expression in the prefrontal cortex, BDNF is a potential regulatory factor for building and maintaining cognitive reserves. Recent studies suggest that individual d...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000362242
更新日期:2014-01-01 00:00:00
abstract::In this study, we examined the effect of the 5-HT2A,C receptor agonist (+/-)-1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI) on locomotor activity and the head twitch response in rats by the repeated (twice daily for 4 days) subcutaneous administration of 0.9% saline (1 ml/kg) or (+/-)-3,4-Methylenedioxymethamphet...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000026474
更新日期:1998-01-01 00:00:00
abstract::The effects of two benzodiazepines (alprazolam and bromazepam) on performance and event-related brain potentials (ERPs) in visual search and verbal recognition memory paradigms were tested in a placebo-controlled double-blind paradigm employing 12 young healthy subjects. Both drugs exerted similar effects on performan...
journal_title:Neuropsychobiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1159/000119291
更新日期:1996-01-01 00:00:00
abstract::The prevalence of 3,4-methylenedioxymethamphetamine (MDMA) use has increased globally and the pattern of consumption has changed considerably. Previously, a subculture of MDMA users was fairly restricted to the dance club scene. More recently, use has spread outside of this subculture and now many users consume MDMA f...
journal_title:Neuropsychobiology
pub_type: 杂志文章,评审
doi:10.1159/000253549
更新日期:2009-01-01 00:00:00
abstract::The cerebrospinal fluid (CSF) concentrations of the monoamine metabolites 5-hydroxyindoleacetic acid (5-HIAA), homovanillic acid (HVA) and 3-methoxy-4-hydroxyphenylglycol (MHPG) as well as their ratios and correlations were analyzed in relation to the season of birth. The sample consisted of 241 drug-free patients par...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000026561
更新日期:1999-01-01 00:00:00
abstract::Serotonergic dysfunction is implicated in Alzheimer's disease (AD) on the basis of studies of serotonin and its metabolite in postmortem specimens and CSF. There were also reports on association of a tryptophan hydroxylase (TPH) intron 7 variant and CSF 5-hydroxyindoleacetic acid concentrations. These suggested TPH mi...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000054856
更新日期:2001-01-01 00:00:00
abstract::Apomorphine, a dopamine receptor agonist (given in a dose of 0.75 mg s.c.), was administered to 8 healthy volunteers; electroencephalograph (EEG) and event-related potential (ERP) mapping were performed before dosing and 0.5, 1.5 and 2.5 h after dosing. Apomorphine caused an overall increase in beta activity at time 0...
journal_title:Neuropsychobiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1159/000026560
更新日期:1999-01-01 00:00:00
abstract::Human personality traits, which are substantially heritable, may be modulated by monoamine neurotransmitters. It has been demonstrated that the catechol-O-methyltransferase (COMT) Val158Met genetic polymorphism, a functional polymorphism that may affect monoamine metabolism, is possibly associated with specific person...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000079107
更新日期:2004-01-01 00:00:00
abstract::Early N1P2 and late N2P3 responses generated in an auditory oddball paradigm are topographically compared in three psychiatric patient groups. In schizophrenia N1 and N2 amplitude is comparable with dementia and significantly decreased with respect to affective disorder. In contrast, P3 amplitude does not allow discri...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000119343
更新日期:1997-01-01 00:00:00
abstract::Morningness-eveningness preference by the self-rated Morningness-Eveningness Questionnaire (MEQ) has earlier been shown to be associated with the subjects' season of birth. Here, we obtain this result for a new sample of 2,125 university students and for the sample obtained by pooling the data with the earlier study, ...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000067803
更新日期:2002-01-01 00:00:00
abstract:BACKGROUND:Derangements of the gut microbiome have been linked to increased systemic inflammation and central nervous system disorders, including schizophrenia. This systematic review thus aimed to investigate the hypothesis that probiotic supplementation improves schizophrenia symptoms. METHODS:By using the keywords ...
journal_title:Neuropsychobiology
pub_type: 杂志文章,meta分析
doi:10.1159/000498862
更新日期:2019-01-01 00:00:00
abstract::The effects of the addition of short-term lithium to long-term administration of antidepressants (clomipramine or citalopram) on the levels of 5-HT and 5-HIAA and serotonergic receptors were studied in the rat cortex. The addition of short-term Li to long-term antidepressant treatment potentiated an increase in 5-HIAA...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000119243
更新日期:1996-01-01 00:00:00
abstract::Neurobiological and pharmacological research has suggested that dysregulation of the central noradrenergic systems might be involved in the pathophysiology of attention deficit hyperactivity disorder (ADHD). Previous studies have demonstrated that the norepinephrine transporter gene (SLC6A2) is associated with ADHD. T...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000138916
更新日期:2008-01-01 00:00:00
abstract::The brain activity of 13 right-handed students (6 men and 7 women) was determined using high resolution (99m)Tc-HMPAO brain SPECT images during visuospatial tasks. The results showed that there was no significant gender-specific difference in solving the visuospatial tasks and that no meaningful statistical difference...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000026639
更新日期:2000-01-01 00:00:00
abstract::This study investigated the acute effect of a dose range of low-to-moderate binge-like methamphetamine treatments on the regional expression of neurotrophin proteins in the brain and serum 2 h after the last dose, in addition to assessing the behavioural effects and dopamine neurotransmitter changes produced. Male Spr...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000480513
更新日期:2017-01-01 00:00:00
abstract:BACKGROUND:Abnormalities in different parameters of the norepinephrine system have been widely described in major depression. The presence of alpha(2)-adrenoreceptors in blood platelets, similar to those in the brain, prompted us to evaluate them in depressed patients, as compared with healthy controls. METHODS:Fiftee...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000054930
更新日期:2001-01-01 00:00:00
abstract::Clozapine is an effective atypical antipsychotic that has high affinity for many neurotransmitter receptors. Among the adverse effects of clozapine, urinary incontinence is commonly found and is suggested to be caused by alpha-adrenergic blockade. We tested the hypothesis that clozapine-induced urinary incontinence is...
journal_title:Neuropsychobiology
pub_type: 临床试验,杂志文章
doi:10.1159/000026674
更新日期:2000-01-01 00:00:00
abstract:BACKGROUND:So-called Porteus mazes are used to investigate prefrontal cortex (PFC) functioning in normal subjects and patients with different neuropsychiatric disorders. Here we present data confirming the involvement of the PFC for the first time by means of functional magnetic resonance imaging (fMRI). To minimize mo...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000095742
更新日期:2006-01-01 00:00:00
abstract:BACKGROUND:Schizophrenia is a genetically complex disorder with an unknown pathophysiology. Several genes implicated in glutamate metabolism have been associated with the disorder. Recent studies of polymorphisms in the dystrobrevin-binding protein 1 gene (DTNBP1; dysbindin) and D-amino-acid-oxidase (DAO) gene, both in...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000235799
更新日期:2009-01-01 00:00:00
abstract::Six WHO Collaborating Centre took part in the study of the antithymic activity of blood sera of patients suffering from schizophrenia. Blood serum specimens from 118 schizophrenic patients and 62 mentally healthy donors were investigated. Statistically significant differences between schizophrenic patients and the con...
journal_title:Neuropsychobiology
pub_type: 杂志文章
doi:10.1159/000117781
更新日期:1980-01-01 00:00:00