Golden Snub-Nosed Monkeys: Potential Primate Paradigm in Post-Traumatic Stress Disorder Research.

Area of Science:

• Primatology
• Neuroscience
• Behavioral Biology

Background:

• Post-traumatic stress disorder (PTSD) affects individuals exposed to trauma, but its biological mechanisms are poorly understood.
• Current research on trauma responses predominantly uses rodent models, neglecting non-human primates.
• Trauma-focused interventions for PTSD have limited effectiveness.

Purpose of the Study:

• To investigate trauma-related behavioral changes in golden snub-nosed monkeys following an infanticide event.
• To assess the utility of golden snub-nosed monkeys as a model for studying PTSD.
• To explore the evolutionary and biological aspects of trauma responses.

Main Methods:

• Matched-control observations of free-ranging golden snub-nosed monkeys (Rhinopithecus roxellana).
• Behavioral assessments included maternal caregiving, prosocial interactions, and responses to alarm calls.
• Observations were conducted before and after a significant traumatic event (infanticide).

Main Results:

• A decrease in prosocial behaviors was observed in some mothers post-trauma.
• Increases in caregiving behaviors and heightened responsiveness to alarm calls were noted.
• Indications of low mood were present in the affected individuals.

Conclusions:

• Golden snub-nosed monkeys display trauma-related behavioral changes consistent with human PTSD symptoms.
• These monkeys serve as a valuable model for PTSD research, bridging gaps in current understanding.
• Further research using non-human primate models can enhance insights into PTSD mechanisms and evolution.