Please use this identifier to cite or link to this item: https://apo.ansto.gov.au/dspace/handle/10238/9300
Title: Partial genetic deletion of neuregulin 1 and adolescent stress interact to alter NMDA receptor binding in the medial prefrontal cortex
Authors: Chohan, TW
Nguyen, A
Todd, SM
Bennett, MR
Callaghan, PD
Arnold, JC
Keywords: Adolescents
Biological stress
Hippocampus
Brain
Mental disorders
Cerebral cortex
Issue Date: 29-Sep-2014
Publisher: Frontiers
Citation: Chohan, T. W., Nguyen, A., Todd, S. M., Bennett, M. R., Callaghan, P., & Arnold, J. C. (2014). Partial genetic deletion of neuregulin 1 and adolescent stress interact to alter NMDA receptor binding in the medial prefrontal cortex. Frontiers in Behavioral Neuroscience, 8, 298. doi:10.3389/fnbeh.2014.00298
Abstract: Schizophrenia is thought to arise due to a complex interaction between genetic and environmental factors during early neurodevelopment. We have recently shown that partial genetic deletion of the schizophrenia susceptibility gene neuregulin 1 (Nrg1) and adolescent stress interact to disturb sensorimotor gating, neuroendocrine activity and dendritic morphology in mice. Both stress and Nrg1 may have converging effects upon N-methyl-D-aspartate receptors (NMDARs) which are implicated in the pathogenesis of schizophrenia, sensorimotor gating and dendritic spine plasticity. Using an identical repeated restraint stress paradigm to our previous study, here we determined NMDAR binding across various brain regions in adolescent Nrg1 heterozygous (HET) and wild-type (WT) mice using [3H] MK-801 autoradiography. Repeated restraint stress increased NMDAR binding in the ventral part of the lateral septum (LSV) and the dentate gyrus (DG) of the hippocampus irrespective of genotype. Partial genetic deletion of Nrg1 interacted with adolescent stress to promote an altered pattern of NMDAR binding in the infralimbic (IL) subregion of the medial prefrontal cortex. In the IL, whilst stress tended to increase NMDAR binding in WT mice, it decreased binding in Nrg1 HET mice. However, in the DG, stress selectively increased the expression of NMDAR binding in Nrg1 HET mice but not WT mice. These results demonstrate a Nrg1-stress interaction during adolescence on NMDAR binding in the medial prefrontal cortex. © 2014 Chohan, Nguyen, Todd, Bennett, Callaghan and Arnold this is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY)
Gov't Doc #: 8697
URI: http://doi.org/10.3389/fnbeh.2014.00298
http://apo.ansto.gov.au/dspace/handle/10238/9300
ISSN: 1662-5153
Appears in Collections:Journal Articles

Files in This Item:
File Description SizeFormat 
fnbeh-08-00298.pdf1.39 MBAdobe PDFThumbnail
View/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.