Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 4 of 4
Full-Text Articles in Life Sciences
The Functional And Structural Consequences Of Aberrant Microglial Activity In Major Depressive Disorder, Jasmine D. Cakmak
The Functional And Structural Consequences Of Aberrant Microglial Activity In Major Depressive Disorder, Jasmine D. Cakmak
Electronic Thesis and Dissertation Repository
Major depressive disorder (MDD) is a highly debilitating neuropsychiatric illness which has been linked with increases in both peripheral and central inflammation, as well as with changes in connectivity. Although countless studies have investigated these two topics, the relationship between neuroinflammation and functional/structural connectivity has not been explored. Using [18F]FEPPA PET imaging, we measured translocator protein-related (TSPO) microglial activity in the subgenual anterior cingulate cortex (sgACC) and insula and confirmed significantly increased [18F]FEPPA uptake in depressed patients (N=12) compared to healthy controls (N=23). Using a seed-based ROI analysis of fMRI data, we found that patients show …
Brain-Specific And Systemic Inflammatory Response Following Repetitive Concussive Impact In A Mouse Model, So Young Eo
Brain-Specific And Systemic Inflammatory Response Following Repetitive Concussive Impact In A Mouse Model, So Young Eo
Electronic Thesis and Dissertation Repository
Concussion is the most common form of mild traumatic brain injury (mTBI). TBI resolution is modulated by neuroinflammation, which is augmented by the infiltration of innate immune cells from the circulation. Peripheral, myeloid immune cells not only invade neural tissues but other organs as well causing local inflammation and tissue damage, known as systemic inflammatory response syndrome. Here, I assessed the temporal and anatomical nature of the neural and systemic cellular inflammatory response to repetitive, mTBI in a 3-hit mouse model of concussion. The results showed significant microglial activity, accumulation of peripheral myeloid cells and prominent axonal damage post-injury. The …
White Matter Inflammation And Executive Dysfunction: Implications For Alzheimer Disease And Vascular Cognitive Impairment, Alexander Levit
White Matter Inflammation And Executive Dysfunction: Implications For Alzheimer Disease And Vascular Cognitive Impairment, Alexander Levit
Electronic Thesis and Dissertation Repository
White matter integrity is crucial to healthy executive function, the cognitive domain that enables functional independence. However, in the ageing brain, white matter is highly vulnerable. White matter inflammation increases with age and Alzheimer disease (AD), which disrupts the normal function of white matter. This may contribute to executive dysfunction, but the relationship between white matter inflammation and executive function has not been directly evaluated in ageing nor AD. White matter is also particularly vulnerable to cerebrovascular disease, corresponding with the common presentation of executive dysfunction in vascular cognitive impairment (VCI). Thus, white matter may be an important substrate by …
Mechanisms Of Neural Precursor Cell Apoptosis By Microglia-Derived Cytokines, Jennifer Guadagno
Mechanisms Of Neural Precursor Cell Apoptosis By Microglia-Derived Cytokines, Jennifer Guadagno
Electronic Thesis and Dissertation Repository
The persistence of neural precursor cells (NPCs) in distinct niches of the adult brain and spinal cord provides an important opportunity for regeneration in the affected nervous system. In the adult brain, neural precursor cells (NPCs) generate new neurons that can be integrated into the CNS circuitry to replace damaged or lost neurons, and contribute to learning and memory processes. Deregulated neurogenesis has been observed under both acute and chronic neurological conditions including stroke, Alzheimer’s disease, and Parkinson’s disease. The extent to which neurogenesis contributes to brain repair is severely limited by the neuroinflammatory processes associated with these neurodegenerative conditions. …