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Full-Text Articles in Neurosciences

Short Chain Fatty Acids Taken At Time Of Thrombectomy In Acute Ischemic Stroke Patients Are Independent Of Stroke Severity But Associated With Inflammatory Markers And Worse Symptoms At Discharge, Nicholas Henry, Jacqueline A. Frank, Christopher J. Mclouth, Amanda L. Trout, Andrew J. Morris, Jianzhong Chen, Ann M. Stowe, Justin F. Fraser, Keith R. Pennypacker Jan 2022

Short Chain Fatty Acids Taken At Time Of Thrombectomy In Acute Ischemic Stroke Patients Are Independent Of Stroke Severity But Associated With Inflammatory Markers And Worse Symptoms At Discharge, Nicholas Henry, Jacqueline A. Frank, Christopher J. Mclouth, Amanda L. Trout, Andrew J. Morris, Jianzhong Chen, Ann M. Stowe, Justin F. Fraser, Keith R. Pennypacker

Behavioral Science Faculty Publications

Introduction: Short chain fatty acids (SCFA) are gut microbiota-derived metabolites that contribute to the gut-brain axis and may impact stroke outcomes following gut dysbiosis. We evaluated plasma SCFA concentrations against stroke severity parameters and identified SCFA-associated protein networks.

Methods: The Blood and Clot Thrombectomy Registry and Collaboration (BACTRAC), a continuously enrolling tissue bank, was used to obtain stroke samples. Arterial blood distal and proximal to the thrombus was obtained from Acute Ischemic Stroke (AIS) Patients (n=53) during thrombectomy. Patient demographics, stroke presentation and outcome parameters were reported. The SCFAs were isolated from proximal plasma via chemical derivatization UHPLC coupled tandem …


Dementia Risk Reduction: Why Haven't The Pharmacological Risk Reduction Trials Worked? An In-Depth Exploration Of Seven Established Risk Factors, Ruth Peters, John Breitner, Sarah James, Gregory A. Jicha, Pierre-Francois Meyer, Marcus Richards, A. David Smith, Hussein N. Yassine, Erin L. Abner, Atticus H. Hainsworth, Patrick G. Kehoe, Nigel Beckett, Christopher Weber, Craig Anderson, Kaarin J. Anstey, Hiroko H. Dodge Dec 2021

Dementia Risk Reduction: Why Haven't The Pharmacological Risk Reduction Trials Worked? An In-Depth Exploration Of Seven Established Risk Factors, Ruth Peters, John Breitner, Sarah James, Gregory A. Jicha, Pierre-Francois Meyer, Marcus Richards, A. David Smith, Hussein N. Yassine, Erin L. Abner, Atticus H. Hainsworth, Patrick G. Kehoe, Nigel Beckett, Christopher Weber, Craig Anderson, Kaarin J. Anstey, Hiroko H. Dodge

Neurology Faculty Publications

Identifying the leading health and lifestyle factors for the risk of incident dementia and Alzheimer's disease has yet to translate to risk reduction. To understand why, we examined the discrepancies between observational and clinical trial evidence for seven modifiable risk factors: type 2 diabetes, dyslipidemia, hypertension, estrogens, inflammation, omega-3 fatty acids, and hyperhomocysteinemia. Sample heterogeneity and paucity of intervention details (dose, timing, formulation) were common themes. Epidemiological evidence is more mature for some interventions (eg, non-steroidal anti-inflammatory drugs [NSAIDs]) than others. Trial data are promising for anti-hypertensives and B vitamin supplementation. Taken together, these risk factors highlight a future need …


Correlation Of Inflammation In Arthritis With The Myelination In The Brain, Anna Spears May 2020

Correlation Of Inflammation In Arthritis With The Myelination In The Brain, Anna Spears

Honors Theses

This study was conducted to investigate whether the influence of arthritis has an effect on the cerebral white matter. The project was performed at the South Oxford Campus, where diffusion tensor imaging (DTI) data was obtained from the Nathan Kline Institute-Rockland Sample (NKI- RS). Image processing was conducted using Functional Magnetic Resonance Imaging of Brain Software Library in which we obtained raw data to formulate Apparent Diffusion Coefficient (ADC), Axial Diffusivity (AD), Radial Diffusivity (RD), and Fractional Anisotropy. A one way Analysis of Covariance (ANCOVA) was performed to determine the significant difference between the history of arthritis on each of …


White Matter Inflammation And Executive Dysfunction: Implications For Alzheimer Disease And Vascular Cognitive Impairment, Alexander Levit Nov 2018

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 …


The Role Of The Leukemia Inhibitory Factor Receptor In Neuroprotective Signaling, Stephanie M. Davis, Keith R. Pennypacker Mar 2018

The Role Of The Leukemia Inhibitory Factor Receptor In Neuroprotective Signaling, Stephanie M. Davis, Keith R. Pennypacker

Center for Advanced Translational Stroke Science Faculty Publications

Several neurotropic cytokines relay their signaling through the leukemia inhibitory factor receptor. This 190kDa subunit couples with the 130kDa gp130 subunit to transduce intracellular signaling in neurons and oligodendrocytes that leads to expression of genes associated with neurosurvival. Moreover, activation of this receptor alters the phenotype of immune cells to an anti-inflammatory one. Although cytokines that activate the leukemia inhibitory factor receptor have been studied in the context of neurodegenerative disease, therapeutic targeting of the specific receptor subunit has been understudied in by comparison. This review examines the role of this receptor in the CNS and immune system, and its …


Sex Differential In 15-Hydroxyprostaglandin Dehydrogenase Levels In The Lumen Of Human Intracranial Aneurysms., Nohra Chalouhi, Pascal Jabbour, Mario Zanaty, Robert M. Starke, James Torner, Daichi Nakagawa, David M. Hasan Oct 2017

Sex Differential In 15-Hydroxyprostaglandin Dehydrogenase Levels In The Lumen Of Human Intracranial Aneurysms., Nohra Chalouhi, Pascal Jabbour, Mario Zanaty, Robert M. Starke, James Torner, Daichi Nakagawa, David M. Hasan

Department of Neurosurgery Faculty Papers

BACKGROUND: Aspirin is a promising medical therapy for the prevention of intracranial aneurysm (IA) rupture. Recently, we found that men have a better response to aspirin than women. The purpose of this study was to determine whether a sex differential exists in the level of 15-hydroxyprostaglandin dehydrogenase (15-PGDH) in the lumen of human IAs.

METHODS AND RESULTS: Consecutive patients undergoing coiling or stent-assisted coiling for a saccular IA at our institution were enrolled. Two samples (A and B) were collected from IA lumens, and the plasma level of 15-PGDH was measured using an ELISA-based method. The study included 38 patients, …


Mitochondria-Associated Micrornas In Rat Hippocampus Following Traumatic Brain Injury, Wang-Xia Wang, Nishant P. Visavadiya, Jignesh D. Pandya, Peter T. Nelson, Patrick G. Sullivan, Joe E. Springer Mar 2015

Mitochondria-Associated Micrornas In Rat Hippocampus Following Traumatic Brain Injury, Wang-Xia Wang, Nishant P. Visavadiya, Jignesh D. Pandya, Peter T. Nelson, Patrick G. Sullivan, Joe E. Springer

Sanders-Brown Center on Aging Faculty Publications

Traumatic brain injury (TBI) is a major cause of death and disability. However, the molecular events contributing to the pathogenesis are not well understood. Mitochondria serve as the powerhouse of cells, respond to cellular demands and stressors, and play an essential role in cell signaling, differentiation, and survival. There is clear evidence of compromised mitochondrial function following TBI; however, the underlying mechanisms and consequences are not clear. MicroRNAs (miRNAs) are small non-coding RNA molecules that regulate gene expression post-transcriptionally, and function as important mediators of neuronal development, synaptic plasticity, and neurodegeneration. Several miRNAs show altered expression following TBI; however, the …