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Full-Text Articles in Medicine and Health Sciences

Role Of Chronic Stress-Induced Neuroinflammation In Rodent Locus Coeruleus Physiology And Anxiety-Like Behaviors, Arthur Anthony Alfonso Reyes Jun 2023

Role Of Chronic Stress-Induced Neuroinflammation In Rodent Locus Coeruleus Physiology And Anxiety-Like Behaviors, Arthur Anthony Alfonso Reyes

Graduate School of Biomedical Sciences Theses and Dissertations

The locus coeruleus (LC), the primary site of brain norepinephrine (NE), is a key anatomical brain region implicated in the stress response. Stress is a neuroendocrine physiologic response to a stressor that promotes organism survival through adaptive change and restoration of homeostasis. The central stress response, which drives behavioral and physiological change, is primarily mediated by activating the hypothalamic-pituitary-adrenal (HPA) axis. While advantageous in the short term, chronic stress exposure can lead to HPA axis and LC dysregulation, which are thought to contribute to the etiology of anxiety disorders. Previous studies demonstrate the effects of acute stress in increasing LC …


Examining The Effects Of A Zoom Interview On Cortisol, Bennett Perkins May 2023

Examining The Effects Of A Zoom Interview On Cortisol, Bennett Perkins

Psychological Science Undergraduate Honors Theses

The stress response is an essential physiological process that facilitates survival in threatening conditions. Stress impacts numerous bodily systems, and prior work has focused on cortisol, a steroid derived from cholesterol, as a key biomarker for assessing biological stress reactivity in humans. Social stressors are known to contribute to marked increased in cortisol levels, but to date little work has examined whether social situations known to be stressful in person can influence cortisol when those situations occur remotely. In this study, I investigated the effects of a Zoom-based social stressor on salivary cortisol. Participants were randomly assigned to the Zoom-stress …


Neurobiology Of Ptsd In Adults And Children: The Impact Of Stress-Induced Brain Abnormalities Across The Lifespan, Catherine Clover Jan 2023

Neurobiology Of Ptsd In Adults And Children: The Impact Of Stress-Induced Brain Abnormalities Across The Lifespan, Catherine Clover

Undergraduate Honors Theses

In the scholarly community, there is disagreement about the effects of PTSD or chronic stress on the brain of adults and children. Though PTSD or chronic stress are known to negatively affect neurobiological structures, specifically due to prolonged glucocorticoid excess, volumetric discrepancies between traumatized and control groups are not unanimously confirmed. This review sought to address the common understandings in academia of the effects of PTSD on the brains of adults and children. Literature on this topic indicated that, in adults, the hippocampus, cingulate gyrus, and prefrontal cortex bilaterally appeared to decrease in gray matter volume and the corpus callosum …