Social defeat stress potentiates thermal sensitivity in operant models of pain processing

Catherine A Marcinkiewcz; Megan K Green; Darragh P Devine; Peter Duarte; Charles J Vierck; Robert P Yezierski

doi:10.1016/j.brainres.2008.11.042

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Social defeat stress potentiates thermal sensitivity in operant models of pain processing

Journal article

Open access

Peer reviewed

Social defeat stress potentiates thermal sensitivity in operant models of pain processing

Catherine A Marcinkiewcz, Megan K Green, Darragh P Devine, Peter Duarte, Charles J Vierck and Robert P Yezierski

Brain research, Vol.1251, pp.112-120

2009

DOI: 10.1016/j.brainres.2008.11.042

PMCID: PMC3628742

PMID: 19059227

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https://www.ncbi.nlm.nih.gov/pmc/articles/3628742View

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Abstract

Higher-order processing of nociceptive input is distributed in corticolimbic regions of the brain, including the anterior cingulate, parieto-insular and prefrontal cortices, as well as subcortical structures such as the bed nucleus of stria terminalis and amygdala. In addition to their role in pain processing, these regions encode or modulate emotional, motivational and sensory responses to stress. Thus, pain and stress pathways in the brain intersect at cortical and subcortical forebrain structures. Accordingly, previous work has shown that acute restraint stress in female rats induces heat hyperalgesia in a forebrain-dependent operant test of thermal escape. In the present study, we investigated the effects of social defeat stress in male rats on the operant escape task, as well as in a test of nociceptive thermal preference. After establishing baseline behaviors in these tests, separate groups of rats were socially defeated by dominant “resident” male rats. They were tested for thermal preference after 5 successive social defeat sessions. Escape from cold, heat and a neutral warm temperature also was evaluated after social defeat. Defeated rats exhibited a significant increase in cold preference after social defeat compared to the baseline. In the escape task, the rats exhibited increased escape from warm and nociceptive cold and heat temperatures. Thus, chronic social stress produces hyperalgesia for both hot and cold stimuli in male rats, suggesting a mutually facilitatory cross-regulation between central pathways regulating stress and pain.

Pain

Stress

Operant behavior

Social defeat

Hyperalgesia

Details

Title: Subtitle: Social defeat stress potentiates thermal sensitivity in operant models of pain processing
Creators: Catherine A Marcinkiewcz - Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL 32610, USA
Megan K Green - Comprehensive Center for Pain Research, Department of Orthodontics, College of Dentistry, University of Florida, Gainesville, FL 32610, USA
Darragh P Devine - Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL 32610, USA
Peter Duarte - Department of Psychology, Behavioral Neuroscience Program, University of Florida, Gainesville, FL 32611-2250, USA
Charles J Vierck - Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL 32610, USA
Robert P Yezierski - Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL 32610, USA
Resource Type: Journal article
Publication Details: Brain research, Vol.1251, pp.112-120
DOI: 10.1016/j.brainres.2008.11.042
PMID: 19059227
PMCID: PMC3628742
NLM abbreviation: Brain Res
ISSN: 0006-8993
eISSN: 1872-6240
Publisher: Elsevier B.V
Language: English
Date published: 2009
Academic Unit: Iowa Neuroscience Institute; Neuroscience and Pharmacology
Record Identifier: 9984040019002771

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