Back to Search
Start Over
A comparison of presynaptic and postsynaptic dopaminergic agonists on inhibitory control performance in rats perinatally exposed to PCBs.
- Source :
-
Neurotoxicology and teratology [Neurotoxicol Teratol] 2015 Jul-Aug; Vol. 50, pp. 11-22. Date of Electronic Publication: 2015 May 27. - Publication Year :
- 2015
-
Abstract
- Polychlorinated Biphenyls (PCBs) are very stable environmental contaminants whose exposure induces a number of health and cognitive concerns. Currently, it is well known that PCB exposure leads to poor performance on inhibitory control tasks. It is also well known that dopamine (DA) depletion within medial prefrontal cortex (mPFC) leads to poor performance on inhibitory control tasks. However, what is not well established is whether or not the inhibitory control problems found following PCB exposure are mediated by DA depletion in mPFC. This study was an investigation into the link between perinatal exposure to PCBs, the effect of this exposure on DA neurotransmission in the mPFC, and inhibitory-control problems during adulthood using a rodent model. The current study served to determine if microinjections of different DA agonists (the presynaptic DA transporter inhibitor and vesicular monoamine transporter agonist bupropion, the postsynaptic DA receptor 2 (DAD2) agonist quinpirole, and the postsynaptic DA receptor 1 (DAD1) agonist SKF81297) directly into the mPFC would differentially improve performance on an inhibitory control task in rats perinatally exposed to an environmentally relevant PCB mixture. Findings suggest several significant sex-based differences on differential reinforcement of low rates (DRL) 15 performance as well as some evidence of differential effectiveness of the DA agonists based on PCB exposure group.<br /> (Copyright © 2015 Elsevier Inc. All rights reserved.)
- Subjects :
- Animals
Benzazepines pharmacology
Bupropion pharmacology
Dopamine Agonists pharmacology
Dopamine Uptake Inhibitors pharmacology
Female
Male
Pregnancy
Quinpirole pharmacology
Rats
Rats, Long-Evans
Reinforcement, Psychology
Sex Factors
Synapses drug effects
Synaptic Transmission drug effects
Dopamine physiology
Executive Function drug effects
Inhibition, Psychological
Polychlorinated Biphenyls toxicity
Prefrontal Cortex drug effects
Prenatal Exposure Delayed Effects
Subjects
Details
- Language :
- English
- ISSN :
- 1872-9738
- Volume :
- 50
- Database :
- MEDLINE
- Journal :
- Neurotoxicology and teratology
- Publication Type :
- Academic Journal
- Accession number :
- 26022001
- Full Text :
- https://doi.org/10.1016/j.ntt.2015.05.009