Summary: New research reveals that witnessing trauma triggers unique brain changes, distinct from those caused by experiencing trauma firsthand. The study found that indirect trauma leads to different protein degradation patterns in key brain regions involved in fear memory.
Researchers also identified sex-specific differences, which may explain why women are twice as likely to develop PTSD. These findings suggest that bystander PTSD may require different treatment strategies, paving the way for more targeted therapies.
Key Facts: Distinct Brain Changes: Witnessing trauma alters brain protein degradation patterns differently than experiencing trauma firsthand.
Sex-Specific Differences: Women’s brains process indirect fear memories differently, possibly explaining their higher PTSD risk.
New Treatment Potential: Findings highlight the need for targeted PTSD therapies based on trauma type and biological factors.
Source: Virginia Tech
For years, post-traumatic stress disorder (PTSD) has been studied primarily in people who experience trauma firsthand.
But what about those who witness it — military veterans, first responders, health care workers, or bystanders to violence — who constitute 10 percent of all PTSD cases?
New research from Virginia Tech, published in PLOS ONE, reveals that witnessing trauma triggers unique brain changes, distinct from those caused by experiencing trauma firsthand. In future research, Jarome hopes to explore how these how these molecular pathways could be leveraged to develop more precise PTSD therapies. Credit: Neuroscience News The study is the first to shed light on the molecular differences between directly acquired PTSD and bystander PTSD and could pave the way for changes in how the disorders are treated.“Currently, patients with directly acquired PTSD and bystander PTSD are treated the same way – with a combination of therapy and medication,” said Timothy Jarome, the project’s principal investigator and associate professor of neurobiology in the College of Agriculture and Life Sciences.“Our research suggests that indirect trauma and direct trauma create different biological responses, which could mean they require different treatment strategies that target distinct brain pathways.” Understanding how observation leads to PTSD Jarome’s research focuses on understanding the neurobiological mechanisms behind memory-related disorders, including PTSD, dementia, and Alzheimer’s disease. His interest in bystander PTSD arose after learning about […]
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