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Articles 1 - 15 of 15
Full-Text Articles in Cardiovascular System
Evaluating The Occurrence Of Age-Related Peripheral Neuropathy In Het3 Mice And Development Of A Whole Tissue Imaging Technique For Analyzing Total Innervation In The Subcutaneous Adipose Depot, Jake Willows
Electronic Theses and Dissertations
Adipose tissue can be characterized as either being a white (energy storing) depot or a brown (energy expending) depot and both have been found to contain dense networks of neural innervation. This adipose nerve supply regulates numerous metabolic functions and likely plays an important role in the function of adipose blood vessels. Recently our lab has shown in the C57BL/6 mouse model that peripheral neuropathy, or the dying back and dysfunction of the nerves in the superficial tissues such as the skin, can extend into the subcutaneous adipose tissue in conditions commonly associated with the neuropathic phenotype (i.e. diabetes, obesity, …
Endothelial Iqgap1 Regulates Leukocyte Transmigration By Directing The Lbrc To The Site Of Diapedesis, David P. Sullivan, Prarthana J. Dalal, Fanny Jaulin, David B. Sacks, Geri Kreitzer, William A. Muller
Endothelial Iqgap1 Regulates Leukocyte Transmigration By Directing The Lbrc To The Site Of Diapedesis, David P. Sullivan, Prarthana J. Dalal, Fanny Jaulin, David B. Sacks, Geri Kreitzer, William A. Muller
Publications and Research
Transendothelial migration (TEM) of leukocytes across the endothelium is critical for inflammation. In the endothelium, TEM requires the coordination of membrane movements and cytoskeletal interactions, including, prominently, recruitment of the lateral border recycling compartment (LBRC). The scaffold protein IQGAP1 was recently identified in a screen for LBRC-interacting proteins. Knockdown of endothelial IQGAP1 disrupted the directed movement of the LBRC and substantially reduced leukocyte TEM. Expression of truncated IQGAP1 constructs demonstrated that the calponin homology domain is required for IQGAP1 localization to endothelial borders and that the IQ domain, on the same IQGAP1 polypeptide, is required for its function in TEM. …
There Is No Association Between The Number Of Stent Retriever Passes And The Incidence Of Hemorrhagic Transformation For Patients Undergoing Mechanical Thrombectomy, Ameer E. Hassan, Hari Kotta, Umar Shariff, Laurie Preston, Wondwossen G. Tekle, Adnan Qureshi
There Is No Association Between The Number Of Stent Retriever Passes And The Incidence Of Hemorrhagic Transformation For Patients Undergoing Mechanical Thrombectomy, Ameer E. Hassan, Hari Kotta, Umar Shariff, Laurie Preston, Wondwossen G. Tekle, Adnan Qureshi
School of Medicine Publications and Presentations
Background: Previous research has focused on the association between hemorrhagic transformation (HT) incidence and pre-procedural variables (i.e., baseline variables) rather than the association between HT incidence and endovascular treatment (EVT) procedural variables (e.g., stent retriever passes).
Objective: To assess the association, if any, that exists between the number of stent retriever passes per procedure and the incidence of HT for patients undergoing mechanical thrombectomy.
Methods: An endovascular database from a comprehensive stroke center was used to collect data on EVT patients treated with Trevo, Solitaire, or Penumbra stent retrievers from the years 2012 to 2017. Statistical analyses were conducted on …
The Late Stage Of Copi Vesicle Fission Requires Shorter Forms Of Phosphatidic Acid And Diacylglycerol, Seung-Yeol Park, Jia-Shu Yang, Zhen Li, Pan Deng, Xiaohong Zhu, David Young, Maria Ericsson, Ruben L. H. Andringa, Adriaan J. Minnaard, Chunmei Zhu, Fei Sun, D. Branch Moody, Andrew J. Morris, Jun Fan, Victor W. Hsu
The Late Stage Of Copi Vesicle Fission Requires Shorter Forms Of Phosphatidic Acid And Diacylglycerol, Seung-Yeol Park, Jia-Shu Yang, Zhen Li, Pan Deng, Xiaohong Zhu, David Young, Maria Ericsson, Ruben L. H. Andringa, Adriaan J. Minnaard, Chunmei Zhu, Fei Sun, D. Branch Moody, Andrew J. Morris, Jun Fan, Victor W. Hsu
Internal Medicine Faculty Publications
Studies on vesicle formation by the Coat Protein I (COPI) complex have contributed to a basic understanding of how vesicular transport is initiated. Phosphatidic acid (PA) and diacylglycerol (DAG) have been found previously to be required for the fission stage of COPI vesicle formation. Here, we find that PA with varying lipid geometry can all promote early fission, but only PA with shortened acyl chains promotes late fission. Moreover, diacylglycerol (DAG) acts after PA in late fission, with this role of DAG also requiring shorter acyl chains. Further highlighting the importance of the short-chain lipid geometry for late fission, we …
Analyzing The Structural Properties Of Pulmonary Arterial Networks, Megan J. Chambers
Analyzing The Structural Properties Of Pulmonary Arterial Networks, Megan J. Chambers
Biology and Medicine Through Mathematics Conference
No abstract provided.
Atypical Presentation Of Stemi With Cardiac Tamponade Related To Malignancy, Matthew J. Johnson, Rohan Penmetcha
Atypical Presentation Of Stemi With Cardiac Tamponade Related To Malignancy, Matthew J. Johnson, Rohan Penmetcha
Rowan-Virtua Research Day
Cardiac tamponade and myocardial infarction are rare as the initial presentation of a malignancy. Here, we describe a case with an atypical presentation of a myocardial infarction due to a thrombus in the right coronary artery occurring in the setting of a pericardial effusion causing tamponade physiology related to malignancy. We present this unique case of myocardial infarction and cardiac tamponade as this was not caused by a type-A aortic dissection. In conclusion, we suggest that malignancy be considered in the differential diagnosis when these findings present together.
Using Peripheral Venous Pressure Waveforms To Predict Key Hemodynamic Parameters, Ali Zohair A Alalawi
Using Peripheral Venous Pressure Waveforms To Predict Key Hemodynamic Parameters, Ali Zohair A Alalawi
Graduate Theses and Dissertations
Analysis of peripheral venous pressure (PVP) waveforms is a novel method of monitoring intravascular volume. Two cohorts were used to study the hemodynamics change of the body state and its influence on the PVP using (1) dehydration setting with infants suffering from pyloric stenosis and (2) hemorrhage setting during a craniosynostosis elective surgery. The goal of this research is to develop a minimally invasive method of analyzing the PVP waveforms and find correlations with volume loss.
Twenty-three pyloric stenosis patients PVP were acquired at five stages and were divided into euvolemic, normal fluid volume, and hypovolemic, significant fluid loss. Seven …
A Perfusion Decellularization Heart Model - An Interesting Tool For Cell-Matrix Interaction Studies, Mihai Meșină, Ion Mîndrilă, Cristian Mesina, Cosmin Vasile Obleagă, Octavian Istrătoaie
A Perfusion Decellularization Heart Model - An Interesting Tool For Cell-Matrix Interaction Studies, Mihai Meșină, Ion Mîndrilă, Cristian Mesina, Cosmin Vasile Obleagă, Octavian Istrătoaie
Journal of Mind and Medical Sciences
Objective. In this paper, we present a technique for whole human, pig, or rat heart decellularization in order to obtain a tool for cell-matrix interaction studies and to obtain the extracellular matrix scaffold with applications to the study of cardiac connective tissue architecture for tissue bioengineering.
Material and methods. In order to achieve tissue decellularization we present two separate protocols, the first for large animal hearts (e.g., pig hearts) and human hearts, the second for smaller hearts (e.g., rat hearts). We have performed the cardiac decellularization technique on 20 pig hearts, 5 human hearts, and 20 rat hearts.
Results. The …
An Anatomical And Functional Analysis Of Digital Arteries, Katie Highsmith
An Anatomical And Functional Analysis Of Digital Arteries, Katie Highsmith
Student Scholar Showcase
Blood flow to the tissue of the hands and digits is efficiently regulated by vasoconstriction and vasodilation. Through a series of cadaveric dissection, we examined arteries in the hands and digits, including ulnar artery, radial artery, palmar arteries, and digital arteries, for their distribution (branching) patterns and morphological parameters (e.g., thickness, length between branches, external and internal diameters). Using data directly collected from three female cadavers as input variables to our mathematical model, we simulated vasoconstriction (-20% and -10% diameter) and vasodilation (+10% and +20 diameter) to evaluate the extent of changes in blood volume and flow within the arteries. …
Arterial Distribution Of The Human Aorta: An Examination Of The Evolutionary, Developmental, And Physiological Bases Of Asymmetry., Brandon Oddo, Cooker Storm
Arterial Distribution Of The Human Aorta: An Examination Of The Evolutionary, Developmental, And Physiological Bases Of Asymmetry., Brandon Oddo, Cooker Storm
Seaver College Research And Scholarly Achievement Symposium
The study of anatomy contends that “form follows function”; a disciplinary theme purporting that anatomical structures (i.e., cells, tissues, and organs) have a shape that serves its proper function. With this in mind, it is unclear why human arterial distribution off the aortic arch is asymmetrical, while the corresponding venous anatomy is symmetrical. We investigated the evolutionary, developmental, and physiological bases for the asymmetry of aortic arch branches in humans. First, we investigated the cardiovascular anatomy of ancestral species to determine if, and at what level, anatomical divergence (from aortic symmetry to asymmetry) occurs. Second, we examined the formation of …
Aortoduodenal Fistula Forms From Primary Aortic Stump Graft In A Two-Time Multi-Visceral Transplant Patient With Presentation Of Gastrointestinal Bleed And Bowel Perforation: A Case Report, Brielle Corrente
Graduate Student Research Symposium
Usually not diagnosed until open laparotomy, aortoduodenalfistulas (ADF) are one of the rarest complications of intestinal transplant surgery. With an incidence rate of only 0.04% at autopsy and only 250 documented cases since the early 1800’s, aortoduodenal fistulas are the most deadly complications of intestinal transplantation with a mortality rate of 100% without surgical intervention. A 39 year old, two-time multi-visceral transplant African American female patient suffered from a primary aortoduodenal fistula formation in a primary modified multi-visceral transplant aortic stump graft site. With emergency open laparotomy repair, revascularization of the secondary multi-visceral transplant was performed, saving the life of …
Differential Localizations Of Protein Phosphatase 1 Isoforms Determine Their Physiological Function In The Heart, Ruijie Liu, Christian Miller, Christiana D'Annibale, Kimberly Vo, Ashley Jacobs
Differential Localizations Of Protein Phosphatase 1 Isoforms Determine Their Physiological Function In The Heart, Ruijie Liu, Christian Miller, Christiana D'Annibale, Kimberly Vo, Ashley Jacobs
Peer Reviewed Articles
Protein phosphatase 1 isoforms α, β, and γ (PP1α, PP1β, and PP1γ) are highly homologous in the catalytic domains but have distinct subcellular localizations. In this study, we utilized both primary cell culture and knockout mice to investigate the isoform-specific roles of PP1s in the heart. In both neonatal and adult cardiac myocytes, PP1β was mainly localized in the nucleus, compared to the predominant presence of PP1α and PP1γ in the cytoplasm. Adenovirus-mediated overexpression of PP1α led to decreased phosphorylation of phospholamban, which was not influenced by overexpression of either PP1β or PP1γ. Interestingly, only cardiac-specific knockout of PP1β resulted …
Oral Saline Consumption And The Exercise Pressor Reflex, John J. Del Vecchio, Evan L. Matthews Dr., Peter A. Hosick Dr.
Oral Saline Consumption And The Exercise Pressor Reflex, John J. Del Vecchio, Evan L. Matthews Dr., Peter A. Hosick Dr.
Research Data
The Volume Pilot Study data represents information from participants' health history questionnaire and measurements of changes in blood pressure, heart rate, hemoglobin, hematocrit, serum sodium, and plasma volume during blood draws taken every 30 minutes for 3 hours.
The HG and CPT information was taken in the second part of the study. This data includes participant demographics and various cardiovascular measurements taken during baseline (5min), handgrip exercise (2min), post-exercise ischemia (2min), and recovery (2min). It also includes cardiovascular measurements taken during the cold pressor test which includes baseline (2min), cold pressor test (2min), and recovery (2min)
Effects Of Acute Hypoxia On Danio Rerio, Karly Crail
Effects Of Acute Hypoxia On Danio Rerio, Karly Crail
Williams Honors College, Honors Research Projects
The purpose of this research experiment was to determine the effects of acute hypoxia on the embryonic zebrafish (Danio rerio) cardiovascular system and assess the critical oxygen level at which embryonic function is compromised. This goal was achieved by exposing embryos to decreasing oxygen concentrations, (6.0 mg/L-0 mg/L) and observing the heart under an inverted microscope. Data analysis was conducted to determine end systolic volume, end diastolic volume, stroke volume, heart rate, and cardiac output. It was hypothesized that hypoxia would stimulate cardiac activity, because in early developmental stages, tissues are supplied with oxygen through bulk diffusion, and …
Three-Dimensional Echocardiographic Analysis Of The Equine Aortic Valve, Amber Mcelhinney
Three-Dimensional Echocardiographic Analysis Of The Equine Aortic Valve, Amber Mcelhinney
Honors Theses and Capstones
This research focused on 3D echocardiography of the aortic valve (AV) in horses. Aortic regurgitation (AR) can be a common finding in older horses, and in severe cases can result in decreased performance and even sudden cardiac death. Standard AR diagnosis includes 2D echocardiography from the right side of the horse. Three-dimensional echocardiography (3DE) records a pyramid of tissue, showing structures in the heart difficult to visualize in 2D methods, and can be more accurate as it does not rely as heavily on placement of the transducer. Nine images of normal AV’s were assessed, and still frames of anatomical structures …