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Social Stress and Aggression in Murine Models
1Laboratory of Behavioral Neuroendocrinology, Faculty of Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan. aktakaha@human.tsukuba.ac.jp.
Current Topics in Behavioral Neurosciences
|August 25, 2021
Summary
Social stress significantly impacts animal aggression, influencing neurobiological and physiological pathways. Understanding these links is crucial for developing treatments for aggression in humans.
Area of Science:
- Neuroscience
- Animal Behavior
- Stress Physiology
Background:
- Social interactions are vital throughout animal life, from affiliative bonds to aggressive conflicts.
- Early social deprivation causes stress and disrupts social and emotional development.
- Aggressive encounters induce stress responses in all involved individuals.
Purpose of the Study:
- To review the impact of social stress on escalating animal aggression.
- To discuss the neurobiological and physiological mechanisms connecting social stress and aggression.
Main Methods:
- Review of existing literature on social stress and aggression in animals.
- Analysis of neurobiological and physiological mechanisms.
- Examination of social instigation and winning effects.
- Assessment of social isolation effects during development.
Main Results:
- Social instigation primes dominant animals for escalated aggression.
- Winning aggressive encounters can be rewarding, leading to addiction-like behaviors and abnormal aggression.
- Early social isolation affects aggression, with outcomes varying by strain, sex, species, and developmental stage.
Conclusions:
- Understanding the neurobiology of social stress and aggression offers insights into treating maladaptive human aggression.
- Targeting these mechanisms could lead to more effective and tolerable treatments.
