Traumatic Stress & Brain Plasticity with Dr. Daniela Kaufer: Increased Myelin Linked to Anxiety and PTSD

This episode delves deep into the fascinating world of brain responses to traumatic stress with esteemed expert, Dr. Daniela Kaufer. Earning her B.Sc. from the Technion Israel Institute of Technology and her Ph.D. from the Hebrew University of Jerusalem, Dr. Kaufer has passionately navigated her academic journey, culminating in her role as Principal Investigator at UC Berkeley. Beyond her remarkable academic pursuits, she finds solace in reading, yoga, meditation, and spending quality time in nature with her family.Dr. Kaufer provides insights from her recent captivating study, which explored the biological variance in reactions to traumatic stress. While reactions differ significantly across individuals, the mechanisms underlying these variations remain elusive. The study shines light on the often-overlooked role of oligodendrocytes and myelin in this context, hinting at their potential involvement in the traumatic-stress-induced alterations in the adult brain.The research took a comprehensive approach, integrating both rat models and human subjects - specifically trauma-exposed US veterans. Through a multimodal study, they unearthed a region-specific correlation between oligodendrocyte cell density, myelin basic protein (MBP), and stress-induced behaviors. For instance, they found a direct connection between stress-induced avoidance and the hippocampal dentate gyrus' oligodendrocytes and MBP.Further validating their findings, the team identified similar patterns in trauma-exposed veterans, where magnetic resonance imaging revealed a direct association between hippocampal and amygdala myelin and symptom profiles.Join us as Dr. Kaufer unpacks these groundbreaking revelations and introduces us to a novel mechanism that might underpin the varied sensitivity levels individuals showcase towards traumatic stress. Discover the intricate dance of brain plasticity, traumatic experiences, and the astonishing ways they intertwine to shape individual reactions.Traumatic Stress, Oligodendrocytes, Myelin, Behavioral Variation, Hippocampal Dentate Gyrus, Anxiety, Fear Learning, US Veterans, Magnetic Resonance Imaging, Brain Plasticity. http://dx.doi.org/10.1038/s41398-021-01745-5