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Clozapine increased c-Fos protein expression in several brain subregions of socially isolated rats

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Authors
Stanisavljević, Andrijana
Perić, Ivana
Bernardi, Rick E.
Gass, Peter
Filipović, Dragana
Article (Published version)
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Abstract
Chronic social stress and/or pharmacological treatments differentially modulate the expression of c-Fos, a marker of neuronal activity, in subregions of the rat brain. Here, we examined the effect of the atypical antipsychotic Clozapine (Clz) (20 mg/kg/day for 3 weeks) on the neuronal activation pattern of c-Fos protein expression in stress-relevant brain subregions of adult male Wistar rats exposed to chronic social isolation (CSIS: 3 weeks), an animal model of depression and schizophrenia, and controls. The protein expression of c-Fos was also used to map neuronal populations in brain subregions activated by CSIS alone. Subregions which showed significantly increased c-Fos protein expression following CSIS included the retrosplenial cortex (RSC), (subregions:RSC granular cortex, c region (RSGc) and dysgranular (RSD)), dentate gyrus, dorsal (DGd), paraventricular thalamic nucleus, posterior part (PVP), lateral (LA)/basolateral (BL) complex of amygdala, caudate putamen (CPu) and accumb...ens nucleus, shell (AcbSh). Increases in c-Fos protein expression in the RSGc, RSD, DGd, PVP, LA/BL complex of amygdala and striatum (CPu, Acb Core (AcbC) and AcbSh) following Clz treatment in controls were found. Clz applied simultaneously with CSIS modulated neuronal activity in CPu, AcbC and AcbSh subregions compared to CSIS alone, increasing c-Fos protein expression. Furthermore, Clz revealed synergistic effects with CSIS in the CA1d and PVP. These identified neural circuits reflect brain subregions activated following CSIS and/or Clz administration. These data further contribute to the understanding of the effectiveness of Clz in the modulation of brain subregion activation in response to CSIS. © 2019

Keywords:
Clozapine / Chronic social isolation / c-Fos / Brain subregion
Source:
Brain Research Bulletin, 2019, 152, 35-44
Projects:
  • Molecular mechanisms of cellular responses on pathological changes in central neuronal system and peripheral organs of mammals (RS-173044)

DOI: 10.1016/j.brainresbull.2019.07.005

ISSN: 0361-9230 (print); 1873-2747 (electronic)

PubMed: 31299320

WoS: 000489354700005

Scopus: 2-s2.0-85068801649
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URI
http://vinar.vin.bg.ac.rs/handle/123456789/8386
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Vinča

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