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Full-Text Articles in Medicine and Health Sciences

Chronic Systemic Immune Dysfunction In African-Americans With Small Vessel-Type Ischemic Stroke, Candice M. Brown, Cheryl D. Bushnell, Gregory P. Samsa, Larry B. Goldstein, Carol A. Colton Dec 2015

Chronic Systemic Immune Dysfunction In African-Americans With Small Vessel-Type Ischemic Stroke, Candice M. Brown, Cheryl D. Bushnell, Gregory P. Samsa, Larry B. Goldstein, Carol A. Colton

Neurology Faculty Publications

The incidence of small vessel-type (lacunar) ischemic strokes is greater in African-Americans compared to whites. The chronic inflammatory changes that result from lacunar stroke are poorly understood. To elucidate these changes, we measured serum inflammatory and thrombotic biomarkers in African-Americans at least 6 weeks post-stroke compared to control individuals. Cases were African-Americans with lacunar stroke (n = 30), and controls were age-matched African-Americans with no history of stroke or other major neurologic disease (n = 37). Blood was obtained > 6 weeks post-stroke and was analyzed for inflammatory biomarkers. Freshly isolated peripheral blood mononuclear cells were stimulated with lipopolysaccharide …


Manipulation Of The Microbiome And Its Impact On Functional Recovery Following Ischemic Stroke, Michal Jandzinski May 2015

Manipulation Of The Microbiome And Its Impact On Functional Recovery Following Ischemic Stroke, Michal Jandzinski

Honors Scholar Theses

Each year, nearly 800,000 individuals residing in the United States will have a stroke. Of these, about 130,000 cases will prove fatal while many of the survivors will be forced to live with disability for the remainder of their lives. Out of all strokes over 87% are ischemic strokes. The widespread incidence of this debilitating condition costs the United States an estimated $36.5 billion dollars every single year. Despite this, clinicians are armed with very little to combat the disease. Recent research developments have brought about the rise in awareness about the importance of the microbiome, the various gut flora …


G-Csf, Rt-Pa And Combination Therapy After Experimental Thromboembolic Stroke, Rainer Kollmar, Nils Henninger, Christian Urbanek, Stefan Schwab Apr 2015

G-Csf, Rt-Pa And Combination Therapy After Experimental Thromboembolic Stroke, Rainer Kollmar, Nils Henninger, Christian Urbanek, Stefan Schwab

Nils Henninger

BACKGROUND: Granulocyte Colony-Stimulating Factor (G-CSF) has remarkable neuroprotective properties. Due to its proven safety profile, G-CSF is currently used in clinical stroke trials. As neuroprotectants are considered to be more effective in the early phase of cerebral ischemia and during reperfusion, G-CSF should to be tested in combination with thrombolysis. Therefore, combination therapy was investigated in an experimental model of thromboembolic stroke. METHODS: Male Wistar rats (n = 72) were subjected to a model of thromboembolic occlusion (TE) of the middle cerebral artery. Different groups (n = 12 each) treated by recombinant tissue-plasminogen activator (rt-PA) or/and G-CSF: group control (control), …


Use Of Telemedicine To Increase Thrombolysis And Advance Care In Acute Ischemic Stroke, Nils Henninger, Nabi Chowdhury, Marc Fisher, Majaz Moonis Apr 2015

Use Of Telemedicine To Increase Thrombolysis And Advance Care In Acute Ischemic Stroke, Nils Henninger, Nabi Chowdhury, Marc Fisher, Majaz Moonis

Nils Henninger

The use of the only proven therapy for acute ischemic stroke, intravenous tissue plasminogen activator (tPA), remains disappointingly low. One potential way to increase the use of tPA is by the implementation of telemedicine stroke care networks. Preliminary data from several studies indicate that the safe and expanded use of tPA for ischemic stroke can be accomplished with the help of telemedicine. Telemedicine stroke care networks can also be used in the future to enhance stroke diagnosis with advanced CT and MRI technology and to potentially increase the number of patients referred to tertiary stroke centers for intra-arterial therapies. It …


Normobaric Hyperoxia And Delayed Tpa Treatment In A Rat Embolic Stroke Model, Nils Henninger, Bernt Bratane, Birgül Bastan, James Bouley, Marc Fisher Apr 2015

Normobaric Hyperoxia And Delayed Tpa Treatment In A Rat Embolic Stroke Model, Nils Henninger, Bernt Bratane, Birgül Bastan, James Bouley, Marc Fisher

Nils Henninger

In a rat embolic stroke (eMCAO) model, the effects of 100% normobaric hyperoxia (NBO) with delayed recombinant tissue plasminogen activator (tPA) administration on ischemic lesion size and safety were assessed by diffusion- and perfusion (PWI)-weighted magnetic resonance imaging. NBO or room air (Air) by a face mask was started at 30 mins posteMCAO and continued for 3.5 h. Tissue plasminogen activator or saline was started at 3 h posteMCAO. Types and location of hemorrhagic transformation were assessed at 24 h and a spectrophotometric hemoglobin assay quantified hemorrhage volume at 10 h. In NBO-treated animals the apparent diffusion coefficient/PWI mismatch persisted …


Translational Research In Stroke: Taking Advances In The Pathophysiology And Treatment Of Stroke From The Experimental Setting To Clinical Trials, Marc Fisher, Nils Henninger Apr 2015

Translational Research In Stroke: Taking Advances In The Pathophysiology And Treatment Of Stroke From The Experimental Setting To Clinical Trials, Marc Fisher, Nils Henninger

Nils Henninger

Many advances have occurred regarding an increased understanding of the basic pathophysiology of ischemic brain injury that could lead to enhanced therapy for this disorder. Among the more important basic science advances are enhanced knowledge of the components of the ischemic cascade, the phenomenon of ischemic preconditioning, the potential relevance of hibernation, studies on gene expression in ischemic tissue, and imaging identification of the ischemic penumbra. The large number of unsuccessful prior clinical trials with a wide range of purported acute stroke therapies has provided many insights and lessons regarding how to perform better trials in the future. Translating these …


Acute Ischemic Stroke Therapy, Nils Henninger, Rajat Kumar, Marc Fisher Apr 2015

Acute Ischemic Stroke Therapy, Nils Henninger, Rajat Kumar, Marc Fisher

Nils Henninger

Data from the European Cooperative Acute Stroke Study (ECASS) III trial demonstrated that tissue plasminogen activator given up to 4.5 h after stroke onset improves outcome and treatment guidelines support its use during this time window. Intra-arterial therapy with tissue plasminogen activator or devices is commonly used at large tertiary centers up to 6-8 h after stroke onset, but conclusive evidence of efficacy remains lacking. During the acute phase after stroke onset, blood pressure elevations should be reduced as should substantial elevations in blood glucose. Statins are recommended in essentially all non-cardioembolic stroke patients. The most important future directions for …


Atrial Fibrillation: Biophysics, Molecular Mechanisms, And Novel Therapies., Alexey V. Glukhov, Leonid V. Rosenshtraukh, Anamika Bhargava, Michele Miragoli, Bas J. D. Boukens Jan 2015

Atrial Fibrillation: Biophysics, Molecular Mechanisms, And Novel Therapies., Alexey V. Glukhov, Leonid V. Rosenshtraukh, Anamika Bhargava, Michele Miragoli, Bas J. D. Boukens

Anatomy and Regenerative Biology Faculty Publications

No abstract provided.


Oral Care Practice Guidelines For The Care-Dependent Hospitalized Adult Outside Of The Intensive Care Unit Setting, Cynthia Susan Drapal Jan 2015

Oral Care Practice Guidelines For The Care-Dependent Hospitalized Adult Outside Of The Intensive Care Unit Setting, Cynthia Susan Drapal

Walden Dissertations and Doctoral Studies

Many nurses lack evidence-based knowledge to deliver appropriate oral care, view oral care in the care-dependent patient as a comfort measure, and give it a low clinical priority. An estimated 44%-65% of hospitalized care-dependent patients do not receive adequate oral care, an intervention that can prevent aspiration pneumonia or pneumonitis. The purpose of this project was to develop a policy for use of an oral assessment tool and evidence-based guidelines for oral care in hospitalized care-dependent adults outside of the intensive care unit setting at a regional health system in the Southeast United States. The project used the theoretical foundations …


Sigma Receptor Activation Mitigates Toxicity Evoked By The Convergence Of Ischemia, Acidosis And Amyloid-Beta, Adam Alexander Behensky Jan 2015

Sigma Receptor Activation Mitigates Toxicity Evoked By The Convergence Of Ischemia, Acidosis And Amyloid-Beta, Adam Alexander Behensky

USF Tampa Graduate Theses and Dissertations

Stroke is the fifth leading cause of death in the United States and a major cause of long-term disability in industrialized countries. The core region of an ischemic stroke dies within minutes due to activation of necrotic pathways. Outside of this core region is the penumbral zone, where some perfusion is maintained via collateral arteries. Delayed cell death occurs in this area due to the triggering of apoptotic mechanisms, which expands the ischemic injury over time. The cellular and molecular events that produce the expansion of the ischemic core continue to be poorly understood. The increases in the amyloid precursor …