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Articles 1 - 30 of 36
Full-Text Articles in Medicine and Health Sciences
The Histone Deacetylase Inhibitor Tubacin Mitigates Endothelial Dysfunction By Up-Regulating The Expression Of Endothelial Nitric Oxide Synthase., Jihui Chen, Jian Zhang, Noor F. Shaik, Bing Yi, Xin Wei, Xiao-Feng Yang, Ulhas P. Naik, Ross Summer, Guijun Yan, Xinyun Xu, Jianxin Sun
The Histone Deacetylase Inhibitor Tubacin Mitigates Endothelial Dysfunction By Up-Regulating The Expression Of Endothelial Nitric Oxide Synthase., Jihui Chen, Jian Zhang, Noor F. Shaik, Bing Yi, Xin Wei, Xiao-Feng Yang, Ulhas P. Naik, Ross Summer, Guijun Yan, Xinyun Xu, Jianxin Sun
Center for Translational Medicine Faculty Papers
Endothelial nitric oxide (NO) synthase (eNOS) plays a critical role in the maintenance of blood vessel homeostasis. Recent findings suggest that cytoskeletal dynamics play an essential role in regulating eNOS expression and activation. Here, we sought to test whether modulation of cytoskeletal dynamics through pharmacological regulation of histone deacetylase 6 (HDAC6)-mediated tubulin deacetylation affects eNOS expression and endothelial function in vitro and in vivo.Wefound that tubulin acetylation inducer (tubacin), a compound that appears to selectively inhibit HDAC6 activity, dramatically increased eNOS expression in several different endothelial cell lines, as determined by both immunoblotting and NO production assays. Mechanistically, we found …
Functional Mobility In A Patient With Antiphospholipid Antibody Syndrome Following A Femoral Neck Fracture Surgical Repair: A Case Report, Mckenna Young
Case Report Papers
Background and Purpose: The main focus of chronic disease in healthcare has typically been about treatment of the disease itself, with little attention given to secondary injuries that result from the chronic disease process. As these individuals age, the risk of secondary injuries increases. This is costly and adds to the caregiver burden. The purpose of this case report was to investigate a comprehensive physical therapy (PT) program focused on rehabilitation for a female with chronic disease who sustained a femoral fracture following her most recent fall. Case Description: A 42-year-old female presented to outpatient PT following a right femoral …
Tissue Plasminogen Activator Effects On Stroke And Physical Therapy Outcomes In Acute Care: A Case Report, Lindsey Leboeuf
Tissue Plasminogen Activator Effects On Stroke And Physical Therapy Outcomes In Acute Care: A Case Report, Lindsey Leboeuf
Case Report Papers
Background and Purpose: An ischemic stroke occurs when blood flow to an area of the brain is restricted and can cause numbness or weakness on one side of the body, facial droop, trouble speaking, and trouble walking. Patients who seek medical attention for symptoms within three hours of their onset can be eligible to receive tissue plasminogen activator (tPA). These patients often have less resultant disability than their counterparts who did not receive the drug. The purpose of this case reports is to display the positive effects of tPA and physical rehabilitation following a stroke in the acute care setting. …
General Practitioners’ Perceptions Of Their Communication With Australian Aboriginal Patients With Acquired Neurogenic Communication Disorders, Deborah Hersh, Elizabeth Armstrong, Meaghan Mcallister, Natalie Ciccone, Judith Katzenellenbogen, Juli Coffin, Sandra Thompson, Colleen Hayward, Leon Flicker, Deborah Woods
General Practitioners’ Perceptions Of Their Communication With Australian Aboriginal Patients With Acquired Neurogenic Communication Disorders, Deborah Hersh, Elizabeth Armstrong, Meaghan Mcallister, Natalie Ciccone, Judith Katzenellenbogen, Juli Coffin, Sandra Thompson, Colleen Hayward, Leon Flicker, Deborah Woods
Research outputs 2014 to 2021
Objective:
Aboriginal people have high rates of stroke and traumatic brain injury (TBI), often with residual, chronic communication deficits and multiple co-morbidities. This study examined general practitioners’ (GPs’) perceptions of their communication with Aboriginal patients with acquired communication disorders (ACD) after brain injury. Effective communication underpins good care but no previous research has explored this specific context.
Methods:
A qualitative descriptive approach was employed using interviews and focus groups with 23 GPs from metropolitan Perth and five regional sites in Western Australia. Data were analysed thematically. Results: GPs reported low visibility of Aboriginal patients with ACD in their practices, minimal …
Interleukin 1 Alpha Administration Is Neuroprotective And Neuro-Restorative Following Experimental Ischemic Stroke, Kathleen E. Salmeron, Michael E. Maniskas, Danielle N. Edwards, Raymond Wong, Ivana Rajkovic, Amanda L. Trout, Abir A. Rahman, Samantha Hamilton, Justin F. Fraser, Emmanuel Pinteaux, Gregory J. Bix
Interleukin 1 Alpha Administration Is Neuroprotective And Neuro-Restorative Following Experimental Ischemic Stroke, Kathleen E. Salmeron, Michael E. Maniskas, Danielle N. Edwards, Raymond Wong, Ivana Rajkovic, Amanda L. Trout, Abir A. Rahman, Samantha Hamilton, Justin F. Fraser, Emmanuel Pinteaux, Gregory J. Bix
Sanders-Brown Center on Aging Faculty Publications
BACKGROUND: Stroke remains a leading cause of death and disability worldwide despite recent treatment breakthroughs. A primary event in stroke pathogenesis is the development of a potent and deleterious local and peripheral inflammatory response regulated by the pro-inflammatory cytokine interleukin-1 (IL-1). While the role of IL-1β (main released isoform) has been well studied in stroke, the role of the IL-1α isoform remains largely unknown. With increasing utilization of intravenous tissue plasminogen activator (t-PA) or thrombectomy to pharmacologically or mechanically remove ischemic stroke causing blood clots, respectively, there is interest in pairing successful cerebrovascular recanalization with neurotherapeutic pharmacological interventions (Fraser et …
The Effects Of Outdoor Air Pollutants On The Costs Of Stroke Hospitalizations In China, Siyu Zeng, Luo Li, Fang Chen
The Effects Of Outdoor Air Pollutants On The Costs Of Stroke Hospitalizations In China, Siyu Zeng, Luo Li, Fang Chen
Transactions of the International Conference on Health Information Technology Advancement
Stroke, the most frequent cause of severe disability and the second cause of death among adults in the world, brings tremendous mental and economic burden to patients and their families. Emerging evidence indicates that the air pollution mixture contributes to strokes. Knowing the relationship between the air pollution and the hospital costs of stroke can help us predict the costs due to air pollution, provide grounds for the allocation of medical insurance funds, and provide better working arrangements for CDC. However, few studies have examined this connection. We used time series analysis with a generalized additive model to estimate the …
Post-Stroke Recrudescence In The Setting Of Tramadol Overuse: A Case Report, Richard S. Zhang, Bs, Benjamin Larson, Md
Post-Stroke Recrudescence In The Setting Of Tramadol Overuse: A Case Report, Richard S. Zhang, Bs, Benjamin Larson, Md
Student Papers, Posters & Projects
This report promotes greater awareness of opioid-induced PSR, especially considering the tragic opioid crisis that has afflicted the US since the 1990s, and the contribution of synthetic prescription opioids to the crisis. This report also supports the establishment of care guidelines to limit PSR risk in people with major risk factors, such as MCA infarcts.
Moyamoya Disease Presenting With Stroke, Timothy Collins, Chimezie Ubbaonu, Phuong Vo
Moyamoya Disease Presenting With Stroke, Timothy Collins, Chimezie Ubbaonu, Phuong Vo
Internal Medicine
No abstract provided.
Visualization And Quantification Of Post-Stroke Neural Connectivity And Neuroinflammation Using Serial Two-Photon Tomography In The Whole Mouse Brain, Katherine Poinsatte, Dene Betz, Vanessa O. Torres, Apoorva D. Ajay, Shazia Mirza, Uma M. Selvaraj, Erik J. Plautz, Xiangmei Kong, Sankalp Gokhale, Julian P. Meeks, Denise M. O. Ramirez, Mark P. Goldberg, Ann M. Stowe
Visualization And Quantification Of Post-Stroke Neural Connectivity And Neuroinflammation Using Serial Two-Photon Tomography In The Whole Mouse Brain, Katherine Poinsatte, Dene Betz, Vanessa O. Torres, Apoorva D. Ajay, Shazia Mirza, Uma M. Selvaraj, Erik J. Plautz, Xiangmei Kong, Sankalp Gokhale, Julian P. Meeks, Denise M. O. Ramirez, Mark P. Goldberg, Ann M. Stowe
Neurology Faculty Publications
Whole-brain volumetric microscopy techniques such as serial two-photon tomography (STPT) can provide detailed information on the roles of neuroinflammation and neuroplasticity throughout the whole brain post-stroke. STPT automatically generates high-resolution images of coronal sections of the entire mouse brain that can be readily visualized in three dimensions. We developed a pipeline for whole brain image analysis that includes supervised machine learning (pixel-wise random forest models via the “ilastik” software package) followed by registration to a standardized 3-D atlas of the adult mouse brain (Common Coordinate Framework v3.0; Allen Institute for Brain Science). These procedures allow the detection of cellular fluorescent …
Burden And Risk Of Neurological And Cognitive Impairment In Pediatric Sickle Cell Anemia In Uganda (Brain Safe): Final Results Of The Cross-Sectional Analysis, Nancy Green, Deogratias Munube, Paul Bangirana, Linda Buluma, Bridget Kebirungi, Robert Opoka, Ezekiel Mupere, Philip Kasirye, Sarah Kiguli, Annet Birabwa
Burden And Risk Of Neurological And Cognitive Impairment In Pediatric Sickle Cell Anemia In Uganda (Brain Safe): Final Results Of The Cross-Sectional Analysis, Nancy Green, Deogratias Munube, Paul Bangirana, Linda Buluma, Bridget Kebirungi, Robert Opoka, Ezekiel Mupere, Philip Kasirye, Sarah Kiguli, Annet Birabwa
Paediatrics and Child Health, East Africa
Background: Children with sickle cell anemia (SCA) are highly susceptible to stroke and other manifestations of pediatric cerebral vasculopathy. Detailed evaluations in sub-Saharan Africa are limited.
Methods: We aimed to establish the frequency and types of pediatric brain injury in a cross-sectional study at a large SCA clinic in Kampala, Uganda in a randomly selected sample of 265 patients with HbSS ages 1–12 years. Brain injury was defined as one or more abnormality on standardized testing: neurocognitive impairment using an age-appropriate test battery, prior stroke by examination or transcranial Doppler (TCD) velocities associated with stroke risk in children with …
A Low-Cost Soft Robotic Hand Exoskeleton For Use In Therapy Of Limited Hand–Motor Function, Grant Rudd, Liam Daly, Vukica Jovanovic, Filip Cukov
A Low-Cost Soft Robotic Hand Exoskeleton For Use In Therapy Of Limited Hand–Motor Function, Grant Rudd, Liam Daly, Vukica Jovanovic, Filip Cukov
Engineering Technology Faculty Publications
We present the design and validation of a low-cost, customizable and 3D-printed anthropomorphic soft robotic hand exoskeleton for rehabilitation of hand injuries using remotely administered physical therapy regimens. The design builds upon previous work done on cable actuated exoskeleton designs by implementing the same kinematic functionality, but with the focus shifted to ease of assembly and cost effectiveness as to allow patients and physicians to manufacture and assemble the hardware necessary to implement treatment. The exoskeleton was constructed solely from 3D-printed and widely available of-the-shelf components. Control of the actuators was realized using an Arduino microcontroller, with a custom-designed shield …
Spectrum Of Neurological Disorders In Neurology Outpatients Clinics In Urban And Rural Sindh, Pakistan: A Cross Sectional Study, Safia Awan, Alam Ibrahim Siddiqi, Ahmed Asif, Naveeduddin Ahmed, Hazim Brohi, Sajad Jalban, Mohammad Wasay
Spectrum Of Neurological Disorders In Neurology Outpatients Clinics In Urban And Rural Sindh, Pakistan: A Cross Sectional Study, Safia Awan, Alam Ibrahim Siddiqi, Ahmed Asif, Naveeduddin Ahmed, Hazim Brohi, Sajad Jalban, Mohammad Wasay
Section of Neurology
Background: Neurological disorders are the most common cause of morbidity and mortality in developing countries. Available evidence on urban–rural differences on neurological diseases is scare in such countries. Our study objective was to determine the prevalence of neurological diseases in urban and rural tertiary care hospitals of Sindh, Pakistan.
Methods: This was a cross sectional study conducted in selected urban and rural region of tertiary care hospitals of Sindh, Pakistan. The outpatients medical records of adults (18 years and above) was obtained from January 1st, 2014 to December 31st, 2014.
Results: A total of 10,786 outpatients visit were recorded in …
Association Of Office And Ambulatory Blood Pressure With Mortality And Cardiovascular Outcomes, Wen-Yi Yang, Jesus D. Melgarejo, Lutgarde Thijs, Zhen-Yu Zhang, José Boggia, Fang-Fei Wei, Tine W. Hansen, Kei Asayama, Gladys E. Maestre, Takayoshi Ohkubo
Association Of Office And Ambulatory Blood Pressure With Mortality And Cardiovascular Outcomes, Wen-Yi Yang, Jesus D. Melgarejo, Lutgarde Thijs, Zhen-Yu Zhang, José Boggia, Fang-Fei Wei, Tine W. Hansen, Kei Asayama, Gladys E. Maestre, Takayoshi Ohkubo
School of Medicine Publications and Presentations
Importance Blood pressure (BP) is a known risk factor for overall mortality and cardiovascular (CV)-specific fatal and nonfatal outcomes. It is uncertain which BP index is most strongly associated with these outcomes.
Objective To evaluate the association of BP indexes with death and a composite CV event.
Design, Setting, and Participants Longitudinal population-based cohort study of 11 135 adults from Europe, Asia, and South America with baseline observations collected from May 1988 to May 2010 (last follow-ups, August 2006-October 2016).
Exposures Blood pressure measured by an observer or an automated office machine; measured for 24 hours, during the day or …
Effectiveness Of High-Intensity Interval Training For Fitness And Mobility Post Stroke: A Systematic Review., Joshua C. Wiener, Amanda Mcintyre, Scott Janssen, Jeffrey Ty Chow, Cristina Batey, Robert Teasell
Effectiveness Of High-Intensity Interval Training For Fitness And Mobility Post Stroke: A Systematic Review., Joshua C. Wiener, Amanda Mcintyre, Scott Janssen, Jeffrey Ty Chow, Cristina Batey, Robert Teasell
Epidemiology and Biostatistics Publications
OBJECTIVE: To evaluate the evidence on the effectiveness of high-intensity interval training (HIIT) in improving fitness and mobility post stroke. TYPE: Systematic review.
LITERATURE SURVEY: Medline, Embase, CINAHL, PsycINFO, and Scopus were searched for articles published in English up to January 2018.
METHODOLOGY: Studies were included if the sample was adult human participants with stroke, the sample size was ≥3, and participants received >1 session of HIIT. Study and participant characteristics, treatment protocols, and results were extracted.
SYNTHESIS: Six studies with a total of 140 participants met inclusion criteria: three randomized controlled trials and three pre-post studies. HIIT protocols ranged …
Community Stroke Practice Experience With Small Vessel Thrombectomy, Kevin Carr Md, Zachary Thwing Md, David Pasquale Md, Ravishankar Shivashankar Md, Yafell Serulle Md
Community Stroke Practice Experience With Small Vessel Thrombectomy, Kevin Carr Md, Zachary Thwing Md, David Pasquale Md, Ravishankar Shivashankar Md, Yafell Serulle Md
Radiology
- Emergent endovascular revascularization is currently mainstay for patients presenting with emergent Large Vessel Occlusion (LVO) of the intracranial circulation
- Stroke symptoms affecting smaller vessels can carry significant morbidity
- Newer technologies and greater experience with the endovascular approach make treatment for small vessel occlusions increasingly more manageable
- This is more relevant in patients presenting outside the tPA window with poor collateral circulation
- We present our technical institutional experience with the endovascular management of acute occlusions of the M2-M3 MCA, A1-A2 ACA and P1-P2 PCA territories.
In Vitro Characterization Of Sonothrombolysis And Echocontrast Agents To Treat Ischemic Stroke, Himanshu Shekhar, Robert T Kleven, Tao Peng, Arunkumar Palaniappan, Kunal B Karani, Shaoling Huang, David D Mcpherson, Christy K Holland
In Vitro Characterization Of Sonothrombolysis And Echocontrast Agents To Treat Ischemic Stroke, Himanshu Shekhar, Robert T Kleven, Tao Peng, Arunkumar Palaniappan, Kunal B Karani, Shaoling Huang, David D Mcpherson, Christy K Holland
Journal Articles
The development of adjuvant techniques to improve thrombolytic efficacy is important for advancing ischemic stroke therapy. We characterized octafluoropropane and recombinant tissue plasminogen activator (rt-PA)-loaded echogenic liposomes (OFP t-ELIP) using differential interference and fluorescence microscopy, attenuation spectroscopy, and electrozone sensing. The loading of rt-PA in OFP t-ELIP was assessed using spectrophotometry. Further, it was tested whether the agent shields rt-PA against degradation by plasminogen activator inhibitor-1 (PAI-1). An in vitro system was used to assess whether ultrasound (US) combined with either Definity or OFP t-ELIP enhances rt-PA thrombolysis. Human whole blood clots were mounted in a flow system and visualized …
Racial And Ethnic Disparities In Stroke Outcomes: A Scoping Review Of Post-Stroke Disability Assessment Tools, Suzanne Perea Burns, Brandi M. White, Gayenell Magwood, Charles Ellis, Ayaba Logan, Joy N. Jones Buie, Robert J. Adams
Racial And Ethnic Disparities In Stroke Outcomes: A Scoping Review Of Post-Stroke Disability Assessment Tools, Suzanne Perea Burns, Brandi M. White, Gayenell Magwood, Charles Ellis, Ayaba Logan, Joy N. Jones Buie, Robert J. Adams
Health and Clinical Sciences Faculty Publications
Purpose: To identify how post-stroke disability outcomes are assessed in studies that examine racial/ethnic disparities and to map the identified assessment content to the International Classification of Functioning, Disability, and Health (ICF) across the time course of stroke recovery.
Methods: We conducted a scoping review of the literature. Articles published between January 2001 and July 2017 were identified through Scopus, PubMed, CINAHL, and PsycINFO according to predefined inclusion and exclusion criteria.
Results: We identified 1791 articles through database and hand-searching strategies. Of the articles, 194 met inclusion criteria for full-text review, and 41 met inclusion criteria for study inclusion. The …
Gangliosides: Treatment Avenues In Neurodegenerative Disease., Pierre J. Magistretti, Fred H. Geisler, Jay S. Schneider, P. Andy Li, Hubert Fiumelli, Simonetta Sipione
Gangliosides: Treatment Avenues In Neurodegenerative Disease., Pierre J. Magistretti, Fred H. Geisler, Jay S. Schneider, P. Andy Li, Hubert Fiumelli, Simonetta Sipione
Department of Pathology, Anatomy, and Cell Biology Faculty Papers
Gangliosides are cell membrane components, most abundantly in the central nervous system (CNS) where they exert among others neuro-protective and -restorative functions. Clinical development of ganglioside replacement therapy for several neurodegenerative diseases was impeded by the BSE crisis in Europe during the 1990s. Nowadays, gangliosides are produced bovine-free and new pre-clinical and clinical data justify a reevaluation of their therapeutic potential in neurodegenerative diseases. Clinical experience is greatest with monosialo-tetrahexosyl-ganglioside (GM1) in the treatment of stroke. Fourteen randomized controlled trials (RCTs) in overall >2,000 patients revealed no difference in survival, but consistently superior neurological outcomes vs. placebo. GM1 was shown …
Dual Task Effects On Story Retell For Participants With Moderate, Mild, Or No Aphasia: Quantitative And Qualitative Findings, Tyson G. Harmon, Adam Jacks, Katarina L. Haley, Antoine Bailliard
Dual Task Effects On Story Retell For Participants With Moderate, Mild, Or No Aphasia: Quantitative And Qualitative Findings, Tyson G. Harmon, Adam Jacks, Katarina L. Haley, Antoine Bailliard
Faculty Publications
Purpose: To determine dual task effects on content accuracy, delivery speed, and perceived effort during narrative discourse in people with moderate, mild, or no aphasia and to explore subjective reactions to retelling a story with a concurrent task.
Method: Two studies (one quantitative and one qualitative) were conducted. In study 1, participants with mild or moderate aphasia and neurotypical controls retold short stories in isolation and while simultaneously distinguishing between high and low tones. Story retell accuracy (speech productivity and efficiency), speed (speech rate, repetitions, and pauses), and perceived effort were measured and compared. In study 2, participants completed semi-structured …
The Effect Of Mirror Therapy On Upper Extremity Functioning For Patients Poststroke: A Systematic Review, Caitlin Beach, Halie Finke, Abby Garrity, Amanda Norcini, Lily Postus, Kristen Tekel, Lyn Kaiser, Otd, Otr/L
The Effect Of Mirror Therapy On Upper Extremity Functioning For Patients Poststroke: A Systematic Review, Caitlin Beach, Halie Finke, Abby Garrity, Amanda Norcini, Lily Postus, Kristen Tekel, Lyn Kaiser, Otd, Otr/L
Student Papers, Posters & Projects
Due to the high incidence of stroke and the detrimental impact it can have on a patient’s independence, several systematic reviews examining the effect of MT on post-stroke rehabilitation for upper extremity functioning have been conducted. However, it is necessary to provide an update to existing systematic reviews to include new clinical studies that have recently been published. Since stroke is a leading cause of disability, this study aims to determine the effectiveness of MT in post-stroke rehabilitation for upper extremity function as compared to conventional therapy.
Macrolide Derivatives Reduce Proinflammatory Macrophage Activation And Macrophage‐Mediated Neurotoxicity, Bei Zhang, Timothy J. Kopper, Xiaodong Liu, Zheng Cui, Steven G. Van Lanen, John C. Gensel
Macrolide Derivatives Reduce Proinflammatory Macrophage Activation And Macrophage‐Mediated Neurotoxicity, Bei Zhang, Timothy J. Kopper, Xiaodong Liu, Zheng Cui, Steven G. Van Lanen, John C. Gensel
Physiology Faculty Publications
Introduction: Azithromycin (AZM) and other macrolide antibiotics are applied as immunomodulatory treatments for CNS disorders. The immunomodulatory and antibiotic properties of AZM are purportedly independent.
Aims: To improve the efficacy and reduce antibiotic resistance risk of AZM‐based therapies, we evaluated the immunomodulatory and neuroprotective properties of novel AZM derivatives. We semisynthetically prepared derivatives by altering sugar moieties established as important for inhibiting bacterial protein synthesis. Bone marrow‐derived macrophages (BMDMs) were stimulated in vitro with proinflammatory, M1, stimuli (LPS + INF‐gamma) with and without derivative costimulation. Pro‐ and anti‐inflammatory cytokine production, IL‐12 and IL‐10, respectively, was quantified using ELISA. Neuron culture …
Using The Copm With Veterans Who Have Sustained A Stroke, Jolene Fujita, Kimberly Low, Keili Maldonado, Mikayla Wrolstad
Using The Copm With Veterans Who Have Sustained A Stroke, Jolene Fujita, Kimberly Low, Keili Maldonado, Mikayla Wrolstad
School of Occupational Therapy Master's Capstone Projects (2016-2021)
The authors collaborated with Mary Matthews-Brownell, OTR/L at the American Lake Veterans Affairs (VA). Our research question was, “What evidence is there to support best practices for veteran re-engagement in meaningful activities to promote overall quality of life for veterans who have sustained a stroke?” In response to Mary’s specific interest in the research supporting the use of the Canadian Occupational Performance Measure (COPM) and her desire to have concrete data to support her intervention outcomes, we chose to host an in-service on the use of the COPM for the occupational therapists at the VA.
To monitor the impact of …
Seeing Eye To Eye: A Machine Learning Approach To Automated Saccade Analysis, Maigh Attre
Seeing Eye To Eye: A Machine Learning Approach To Automated Saccade Analysis, Maigh Attre
Honors Scholar Theses
Abnormal ocular motility is a common manifestation of many underlying pathologies particularly those that are neurological. Dynamics of saccades, when the eye rapidly changes its point of fixation, have been characterized for many neurological disorders including concussions, traumatic brain injuries (TBI), and Parkinson’s disease. However, widespread saccade analysis for diagnostic and research purposes requires the recognition of certain eye movement parameters. Key information such as velocity and duration must be determined from data based on a wide set of patients’ characteristics that may range in eye shapes and iris, hair and skin pigmentation [36]. Previous work on saccade analysis has …
Neuroprotective Activity Of Leukemia Inhibitory Factor Is Relayed Through Myeloid Zinc Finger-1 In A Rat Model Of Stroke, Stephanie M. Davis, Lisa A. Collier, Elspeth A. Foran, Christopher C. Leonardo, Craig T. Ajmo Jr., Keith R. Pennypacker
Neuroprotective Activity Of Leukemia Inhibitory Factor Is Relayed Through Myeloid Zinc Finger-1 In A Rat Model Of Stroke, Stephanie M. Davis, Lisa A. Collier, Elspeth A. Foran, Christopher C. Leonardo, Craig T. Ajmo Jr., Keith R. Pennypacker
Neurology Faculty Publications
The aim of this study was to determine whether leukemia inhibitory factor (LIF) exerts its neuroprotective effects through signal transduction of the transcription factor myeloid zinc finger-1 (MZF-1). According to the hypothesis of this study, MZF-1 mediates LIF-induced neuroprotective signaling during ELVO through increased expression and transcriptional activity. To determine the in vivo role of MZF-1 in LIF-induced neuroprotection, we used Genomatix software was used to MZF-1 sites in the promoter region of the rat superoxide dismutase 3 (SOD3) gene. Stroke was induced via middle cerebral artery occlusion, and animals were administered PBS or 125 μg/kg LIF at …
Efficacy Of Leukemia Inhibitory Factor As A Therapeutic For Permanent Large Vessel Stroke Differs Among Aged Male And Female Rats, Stephanie M. Davis, Lisa A. Collier, Sarah J. Goodwin, Douglas E. Lukins, David K. Powell, Keith R. Pennypacker
Efficacy Of Leukemia Inhibitory Factor As A Therapeutic For Permanent Large Vessel Stroke Differs Among Aged Male And Female Rats, Stephanie M. Davis, Lisa A. Collier, Sarah J. Goodwin, Douglas E. Lukins, David K. Powell, Keith R. Pennypacker
Neurology Faculty Publications
Preclinical studies using rodent models of stroke have had difficulty in translating their results to human patients. One possible factor behind this inability is the lack of studies utilizing aged rodents of both sexes. Previously, this lab showed that leukemia inhibitory factor (LIF) promoted recovery after stroke through antioxidant enzyme upregulation. This study examined whether LIF promotes neuroprotection in aged rats of both sexes. LIF did not reduce tissue damage in aged animals, but LIF-treated female rats showed partial motor skill recovery. The LIF receptor (LIFR) showed membrane localization in young male and aged rats of both sexes after stroke. …
Treatment Fidelity In Aphasia Randomised Controlled Trials, Emily Brogan, Natalie Ciccone, Erin Godecke
Treatment Fidelity In Aphasia Randomised Controlled Trials, Emily Brogan, Natalie Ciccone, Erin Godecke
Research outputs 2014 to 2021
Background: Treatment fidelity is at the heart of evidence-based practice and treatment fidelity processes help to determine the ‘active ingredients’ of a treatment. Hinckley and Douglas in 2013 reviewed treatment fidelity processes in published aphasia trials and found 14% of aphasia treatment studies reported treatment fidelity. This led the authors to call for journals to make treatment fidelity reporting mandatory.
Aims: To review the implementation and reporting of treatment fidelity processes in recent aphasia RCTs to update on practices since 2012.
Methods and Procedures: Aphasia RCTs published between 2012 and 2017 were sourced from online databases speechBITE, …
Improving Door-To-Groin Time For Stroke-Alert Patients Arriving At Tjuh, Megan Carney, Mackenzie O'Connor, Robin Dharia, Md
Improving Door-To-Groin Time For Stroke-Alert Patients Arriving At Tjuh, Megan Carney, Mackenzie O'Connor, Robin Dharia, Md
Phase 1
Introduction: Due to the large number of endovascular-eligible acute ischemic stroke patients, the urgent nature of effective stroke treatment protocols has become increasingly recognized at TJUH. Due to the hospital’s unique situation with two city blocks between the ER and endovascular lab, in-hospital factors remain a significant reason for the delay of treatment.
Objective: The purpose was to conduct a quality-assurance trial to determine whether standardizing imaging modalities for inpatient and ER stroke-alert patients at our institution would improve door-to-puncture times.
Methods: After implementation of the new stroke alert protocol, data were prospectively collected for six months for two groups …
Proteomic Analysis Of Cortical Neuronal Cultures Treated With Poly-Arginine Peptide-18 (R18) And Exposed To Glutamic Acid Excitotoxicity, Gabriella Macdougall, Ryan S. Anderton, Frank L. Mastaglia, Neville W. Knuckey, Bruno P. Meloni
Proteomic Analysis Of Cortical Neuronal Cultures Treated With Poly-Arginine Peptide-18 (R18) And Exposed To Glutamic Acid Excitotoxicity, Gabriella Macdougall, Ryan S. Anderton, Frank L. Mastaglia, Neville W. Knuckey, Bruno P. Meloni
Health Sciences Papers and Journal Articles
Poly-arginine peptide-18 (R18) has recently emerged as a highly effective neuroprotective agent in experimental stroke models, and is particularly efficacious in protecting cortical neurons against glutamic acid excitotoxicity. While we have previously demonstrated that R18 can reduce excitotoxicity-induced neuronal calcium influx, other molecular events associated with R18 neuroprotection are yet to investigated. Therefore, in this study we were particularly interested in protein expression changes in R18 treated neurons subjected to excitotoxicity. Proteomic analysis was used to compare protein expression patterns in primary cortical neuronal cultures subjected to: (i) R18-treatment alone (R18); (ii) glutamic acid excitotoxic injury (Glut); (iii) R18-treatment and …
Pathophysiology Of Ganglioside Gm1 In Ischemic Stroke: Ganglioside Gm1: A Critical Review, Wenchao Zhang, Paul R. Krafft, Tianlong Wang, John H. Zhang, Li Li, Jiping Tang
Pathophysiology Of Ganglioside Gm1 In Ischemic Stroke: Ganglioside Gm1: A Critical Review, Wenchao Zhang, Paul R. Krafft, Tianlong Wang, John H. Zhang, Li Li, Jiping Tang
Neurosurgery and Brain Repair Faculty Publications
Ganglioside GM1 is a member of the ganglioside family which has been used in many countries and is thought of as a promising alternative treatment for preventing several neurological diseases, including cerebral ischemic injury. The therapeutic effects of GM1 have been proved both in neonates and in adults following ischemic brain damage; however, its clinical efficacy in patients with ischemic stroke is still uncertain. This review examines the recent knowledge of the neuroprotective properties of GM1 in ischemic stroke, collected in the past two decades. We conclude that GM1 may have potential for stroke treatment, although we need to be …
Immunomodulation With Human Umbilical Cord Blood Stem Cells Ameliorates Ischemic Brain Injury – A Brain Transcriptome Profiling Analysis, Maple L. Shiao, Ce Yuan, Andrew T. Crane, Joseph P. Voth, Mario Juliano, Laura L. Hocum Stone, Zhenghong Nan, Ying Zhang, Nicole Kuzmin-Nichols, Paul R. Sanberg, Andrew W. Grande, Walter C. Low
Immunomodulation With Human Umbilical Cord Blood Stem Cells Ameliorates Ischemic Brain Injury – A Brain Transcriptome Profiling Analysis, Maple L. Shiao, Ce Yuan, Andrew T. Crane, Joseph P. Voth, Mario Juliano, Laura L. Hocum Stone, Zhenghong Nan, Ying Zhang, Nicole Kuzmin-Nichols, Paul R. Sanberg, Andrew W. Grande, Walter C. Low
Neurosurgery and Brain Repair Faculty Publications
Our group previously demonstrated that administration of a CD34-negative fraction of human non- hematopoietic umbilical cord blood stem cells (UCBSC) 48 h after ischemic injury could reduce infarct volume by 50% as well as significantly ameliorate neurological deficits. In the present study, we explored possible mechanisms of action using next generation RNA sequencing to analyze the brain transcriptome profiles in rats with ischemic brain injury following UCBSC therapy. Two days after ischemic injury, rats were treated with UCBSC. Five days after administration, total brain mRNA was then extracted for RNAseq analysis using Illumina Hiseq 2000. We found 275 genes that …