Golden Snub-Nosed Monkeys: Potential Primate Paradigm in Post-Traumatic Stress Disorder Research
2025
Haitao Zhao | Yan Wang | Jiaxuan Li | Nianlong Li | Wenhui Zhou | Chengliang Wang | Baoguo Li
Post-traumatic stress disorder (PTSD) is a severe psychiatric disorder, affecting approximately 25–35% of individuals exposed to significant psychological trauma. Despite extensive research, the underlying biological mechanisms of PTSD remain poorly understood, and the effectiveness of trauma-focused psychotherapeutic interventions is limited. To date, animal studies investigating trauma responses have primarily relied on rodent models, with the potential contributions of non-human primates relatively neglected. In this study, matched-control observations were employed to examine maternal caregiving behaviors, prosocial interactions, and responses to alarm calls in free-ranging golden snub-nosed monkeys (<i>Rhinopithecus roxellana</i>) before and after an infanticide event. Results indicated a significant decrease in prosocial behaviors among some mothers, accompanied by significant increases in caregiving behaviors, heightened responsiveness to alarm calls, and indications of low mood. These findings provide evidence of trauma-related behavioral changes in golden snub-nosed monkeys, underscoring their utility as a model for studying PTSD given the similarity to trauma responses observed in humans. Overall, this study provides a foundation for further investigation into the evolutionary and biological aspects of PTSD, as well as the interactions between species-specific trauma responses. Future research should explore the use of non-human primate models to deepen our understanding of PTSD mechanisms.
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