نتایج جستجو برای: mesolimbic pathway
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BACKGROUND There has been significant progress in identifying genes that confer risk for autism spectrum disorders (ASDs). However, the heterogeneity of symptom presentation in ASDs impedes the detection of ASD risk genes. One approach to understanding genetic influences on ASD symptom expression is to evaluate relations between variants of ASD candidate genes and neural endophenotypes in unaff...
The mechanism of action of antipsychotic drugs is mainly associated with changes in dopaminergic system. The application of antipsychotic agents simultaneously produces changes in concentrations of metabolites (e.g. kynurenic acid - KYNA, 3-hydroxykynurenine - 3-OHKYN, kynurenine - KYN) of the kynurenine pathway, the pathway engaged in glutamatergic transmission. The increase in KYNA levels in ...
Studies in mice and rats have shown that antinociception produced by intrathecal (i.t.) administration of opioids can be partially inhibited by intracerebroventricular (i.c.v.) administration of naloxone. In this study we tested the hypothesis that this inhibition by i.c.v. naloxone results from antagonism of supraspinal endogenous opioid-mediated antinociception produced by the action of i.t. ...
Tardive dyskinesia is thought to result from neostriatal dopaminergic receptor supersensitivity induced by chronic treatment with neuroleptics. The authors suggest that dopaminergic supersensitivity also occurs in the mesolimbic region after chronic neuroleptic exposure, resulting in the development of a supersensitivity psychosis. Neuroleptic-induced supersensitivity psychosis is illustrated b...
The nucleus of the solitary tract (NST) and the parabrachial nuclei (PbN) are the first and second relays in the rodent central taste pathway. A series of electrophysiological experiments revealed that spontaneous and taste-evoked activities of brain stem gustatory neurons are altered by descending input from multiple forebrain nuclei in the central taste pathway. The nucleus accumbens shell (N...
introduction: drugs of abuse such as nicotine and morphine used systemically by addicts produce their effects via the mesolimbic dopaminergic pathway. furthermore, evidence indicates that some behavioral effects of nicotine and morphine are mediated by nitric oxide (no). based on these observations, the aim of the present study was to investigate the effects of intra-nucleus accumbens (nac) inj...
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