Digital Commons Network^™

Mta3 Represses Cancer Stemness By Targeting The Sox2ot/Sox2 Axis, Liang Du, Lu Wang, Jinfeng Gan, Zhimeng Yao, Wan Lin, Junkuo Li, Yi Guo, Yuping Chen, Fuyou Zhou, Sai-Ching Jim Yeung, Robert P Coppes, Dianzheng Zhang, Hao Zhang

PCOM Scholarly Works

Cancer cell stemness (CCS) plays critical roles in both malignancy maintenance and metastasis, yet the underlying molecular mechanisms are far from complete. Although the importance of SOX2 in cancer development and CCS are well recognized, the role of MTA3 in these processes is unknown. In this study, we used esophageal squamous cell carcinoma (ESCC) as a model system to demonstrate that MTA3 can repress both CCS and metastasis in vitro and in vivo. Mechanistically, by forming a repressive complex with GATA3, MTA3 downregulates SOX2OT, subsequently suppresses the SOX2OT/SOX2 axis, and ultimately represses CCS and metastasis. More importantly, MTA3

Children’S Cancer Pain In A World Of The Opioid Epidemic: Challenges And Opportunities, Michelle Fortier, Sun Yang, Michael T. Phan, Daniel Tomaszewski, Brooke N. Jenkins, Zeev N. Kain

Psychology Faculty Articles and Research

The opioid crisis in the United States has grown at an alarming rate. Children with cancer are at high risk for pain, and opioids are a first‐line treatment in this population. Accordingly, there is an urgent need to optimize pain management in children with cancer without contributing to the opioid crisis. This report details opportunities for this optimization, including clinical practice guidelines, comprehensive approaches to pain management, mobile health, and telemedicine. It is vital to balance appropriate use of analgesics with efforts to prevent misuse in order to reduce unnecessary suffering and minimize unintended harms.

Methods To Impair Hematologic Cancer Progenitor Cells And Compounds Related Thereto, Craig Jordan

Internal Medicine Faculty Patents

Primitive or progenitor hematologic cancer cells have been implicated in the early stages and development of leukemia and malignant lymphoproliferative disorders, including acute myelogenous leukemia (AML), chronic myelogenous leukemia (CML) and chronic lymphoid leukemia (CLL). Interleukin-3 receptor alpha chain (IL-3Ra or CD123) is strongly expressed on progenitor hematologic cancer cells, but is virtually undetectable on normal bone marrow cells. The present invention provides methods of impairing progenitor hematologic cancer (e.g., leukemia and lymphomic) cells by selectively targeting cells expressing CD123. These methods are useful in the detection and treatment of leukemias and malignant lymphoproliferative disorders. Also provided are compounds useful …

Single-Nuclei Rna-Seq On Human Retinal Tissue Provides Improved Transcriptome Profiling, Qingnan Liang, Rachayata Dharmat, Leah Owen, Akbar Shakoor, Yumei Li, Sangbae Kim, Albert Vitale, Ivana Kim, Denise Morgan, Shaoheng Liang, Nathaniel Wu, Ken Chen, Margaret M Deangelis, Rui Chen

Faculty, Staff and Students Publications

Single-cell RNA-seq is a powerful tool in decoding the heterogeneity in complex tissues by generating transcriptomic profiles of the individual cell. Here, we report a single-nuclei RNA-seq (snRNA-seq) transcriptomic study on human retinal tissue, which is composed of multiple cell types with distinct functions. Six samples from three healthy donors are profiled and high-quality RNA-seq data is obtained for 5873 single nuclei. All major retinal cell types are observed and marker genes for each cell type are identified. The gene expression of the macular and peripheral retina is compared to each other at cell-type level. Furthermore, our dataset shows an …

Burnout Among Emergency Physicians Working At A Large Tertiary Centre In Ontario, Rushika Perera, Kristine Van Aarsen, Laura Foxcroft, Rodrick Lim

Journal of Wellness

BACKGROUND: Emergency medicine (EM) is a high-stress specialty. Work related stress and burnout have been reported to negatively impact physician-patient interactions, overall physician mental and physical health, and most importantly, patient outcomes. We assessed the rates of burnout among emergency physicians (EPs) at our centre.

METHODS: A local cross-sectional study to assess burnout among adult and pediatric EPs, fellows and residents was conducted at three Emergency Departments (EDs) at a single institution in Canada. The anonymous online survey encompassed demographics, the validated MBI tool (Maslach Burnout Inventory) and additional questions aimed at identifying determinants of EP burnout. Each respondent’s three …

Role Of Echocardiography In Diagnostic Evaluation Of Patients Admitted To Observation Unit., Muhammad Arslan Cheema, Hafez Mohammad Ammar Abdullah, Waqas Ullah, Yasar Sattar, Shujaul Haq, Khadija Cheema, Asrar Ahmad, Zain Ali, Asoka Balaratna

Abington Jefferson Health Papers

BACKGROUND: Syncope is a transient loss of consciousness due to transient decrease in cerebral perfusion. Syncope accounts for a 3-6% of all emergency department visits. Etiology of syncope can be neural, cardiogenic, or vascular. Previous studies have evaluated the types and management of syncope. Echocardiography is a commonly used test in the evaluation of causes of syncope. Whether the benefit compared to financial burden of this diagnostic study is in all subsets of syncope cases remains unclear.

AIM: To evaluate the impact of echocardiography in the diagnostic evaluation of syncope and to evaluate the subset of patients that would benefit …

A Community Of Care: Patterns Of Pathology And Trauma With A Focus On The Bioarchaeology Of Care At Carrier Mills, Il (10,000 – 1000 Bp), Alecia Schrenk

UNLV Theses, Dissertations, Professional Papers, and Capstones

Illness and injury are universal human experiences which are endowed with cultural meaning. Bioarchaeology has only recently begun to engage with the socioeconomic impacts of illness, injury, impairment, and healthcare provisioning in the past. This study examines how the Middle Archaic (6000 – 300 BC) and Early Woodland (1000 – 200 BC) hunter-gatherer community of Carrier Mills, Illinois was affected by and managed the socioeconomic burdens of poor health. The data presented in this study used bioarchaeological analyses to reveal patterns of poor health and healthcare provisioning within the Carrier Mills community. Bioarchaeology is ideally situated for such investigations since …

Synthesis Of Gadolinium-Doxorubicin Prodrug Carrying Functional Nanoceria For The Targeted Drug Delivery And Cancer Treatment, Arth Patel

Electronic Theses & Dissertations

The main focus of this research was the development of a polymer-coated nanoceria (PNC) platform to be used as a drug delivery system. Water-dispersible PNC is synthesized using a water-based alkaline precipitation method. Cerium nitrate hexahydrate and poly (acrylic acid) are used for the preparation of PNC. The synthesized PNC was characterized using ZETA, and UV- Vis characterization techniques. Polyacrylic acid (PAA)-coated cerium oxide nanoparticles fabricated for the targeted combination therapy of TNBC (MDA-MB-231) and MCF-7. Using EDC/NHS chemistry, the surface carboxylic acid groups of nanoceria was designed and synthesized with ICAM-1 antibody to target ICAM-1 overexpressing TNBC. Next, doxorubicin …

Multiple Mitochondrial Thioesterases Have Distinct Tissue And Substrate Specificity And Coa Regulation, Suggesting Unique Functional Roles., Carmen Bekeova, Lauren Anderson-Pullinger, Kevin Boye, Felix Boos, Yana Sharpadskaya, Johannes M Herrmann, Erin L. Seifert

Department of Pathology, Anatomy, and Cell Biology Faculty Papers

Acyl-CoA thioesterases (Acots) hydrolyze fatty acyl-CoA esters. Acots in the mitochondrial matrix are poised to mitigate β-oxidation overload and maintain CoA availability. Several Acots associate with mitochondria, but whether they all localize to the matrix, are redundant, or have different roles is unresolved. Here, we compared the suborganellar localization, activity, expression, and regulation among mitochondrial Acots (Acot2, -7, -9, and -13) in mitochondria from multiple mouse tissues and from a model of Acot2 depletion. Acot7, -9, and -13 localized to the matrix, joining Acot2 that was previously shown to localize there. Mitochondria from heart, skeletal muscle, brown adipose tissue, and …

Reattachment Of The Multifidus Tendon In Lumbar Surgery To Decrease Postoperative Back Pain: A Technical Note., Neil Klinger, Emre Yilmaz, Dia R Halalmeh, R Shane Tubbs, Marc D Moisi

Articles, Abstracts, and Reports

The posterior midline approach to the lumbar spine requires significant manipulation of the paraspinal muscles. Muscle detachment and retraction results in iatrogenic damage such as crush injury, devascularization, and denervation, all of which have been associated with postoperative pain. The muscle most directly affected by the posterior approach is the lumbar multifidus (LM), the largest and most medial of the deep lumbar paraspinal muscles. The effects of the posterior approach on the integrity of the LM is concerning, as multiple studies have demonstrated that intraoperative injuries sustained by the LM lead to postoperative muscle atrophy and potentially worsening low back …

Ultrafast Two-Photon Imaging Of A High-Gain Voltage Indicator In Awake Behaving Mice, Vincent Villette, Mariya Chavarha, Ivan K Dimov, Jonathan Bradley, Lagnajeet Pradhan, Benjamin Mathieu, Stephen W Evans, Simon Chamberland, Dongqing Shi, Renzhi Yang, Benjamin B Kim, Annick Ayon, Abdelali Jalil, François St-Pierre, Mark J Schnitzer, Guoqiang Bi, Katalin Toth, Jun Ding, Stéphane Dieudonné, Michael Z Lin

Faculty, Staff and Students Publications

Optical interrogation of voltage in deep brain locations with cellular resolution would be immensely useful for understanding how neuronal circuits process information. Here, we report ASAP3, a genetically encoded voltage indicator with 51% fluorescence modulation by physiological voltages, submillisecond activation kinetics, and full responsivity under two-photon excitation. We also introduce an ultrafast local volume excitation (ULoVE) method for kilohertz-rate two-photon sampling in vivo with increased stability and sensitivity. Combining a soma-targeted ASAP3 variant and ULoVE, we show single-trial tracking of spikes and subthreshold events for minutes in deep locations, with subcellular resolution and with repeated sampling over days. In the …

They Shouldn't Get To Hurt You, Diann M. Krywko

Journal of Wellness

No abstract provided.

Fingolimod Plays Role In Attenuation Of Myocardial Injury Related To Experimental Model Of Cardiac Arrest And Extracorporeal Life Support Resuscitation, Naseer Ahmed, Abid Laghari, Bashar Albkhoor, Sobia Tabassum, Sultan Ayoub Meo, Nazeer Muhammad, Daniele Linardi, Abeer A. Al-Masri, Guido Fumagalli, Giovanni Battista Luciani, Giuseppe Faggian, Alessio Rungatscher

Department of Biological & Biomedical Sciences

Background: Sudden cardiac arrest is a major global health concern, and survival of patients with ischemia-reperfusion injury is a leading cause of myocardial dysfunction. The mechanism of this phenomenon is not well understood because of the complex pathophysiological nature of the disease. Aim of the study was to investigate the cardioprotective role of fingolimod in an in vivo model of cardiac arrest and resuscitation.
Methods: In this study, an in vivo rat model of cardiac arrest using extracorporeal membrane oxygenation resuscitation monitored by invasive hemodynamic measurement was developed. At the beginning of extracorporeal life support (ECLS), animals were randomly treated …

Interaction Of The Oncoprotein Transcription Factor Myc With Its Chromatin Cofactor Wdr5 Is Essential For Tumor Maintenance., Lance R. Thomas, Clare M. Adams, Jing Wang, April M. Weissmiller, Joy Creighton, Shelly L. Lorey, Qi Liu, Stephen W. Fesik, Christine M. Eischen, William P. Tansey

Department of Cancer Biology Faculty Papers

The oncoprotein transcription factor MYC is overexpressed in the majority of cancers. Key to its oncogenic activity is the ability of MYC to regulate gene expression patterns that drive and maintain the malignant state. MYC is also considered a validated anticancer target, but efforts to pharmacologically inhibit MYC have failed. The dependence of MYC on cofactors creates opportunities for therapeutic intervention, but for any cofactor this requires structural understanding of how the cofactor interacts with MYC, knowledge of the role it plays in MYC function, and demonstration that disrupting the cofactor interaction will cause existing cancers to regress. One cofactor …

In Vivo Investigation Of The Tissue Response To Commercial Teflon Insulin Infusion Sets In Large Swine For 14 Days: The Effect Of Angle Of Insertion On Tissue Histology And Insulin Spread Within The Subcutaneous Tissue., Gabriella Eisler, Jasmin R. Kastner, Marc C. Torjman, Abdurizzagh Khalf, David Diaz, Alek R. Dinesen, Channy Loeum, Mathew L. Thakur, Paul Strasma, Jeffrey I. Joseph

Department of Anesthesiology Faculty Papers

Objective: This study investigated the effects of the inflammatory tissue response (ITR) to an insulin infusion set (IIS) on insulin bolus spread over wear time, as well as the effect of cannula insertion angle on the ITR, bolus shape, and pump tubing pressure.

Research design and methods: Angled or straight IISs were inserted every other day for 14 days into the subcutaneous tissue of 11 swine and insulin was delivered continuously. Prior to euthanasia, a 70 µL bolus of insulin/X-ray contrast agent was infused while recording a pressure profile (peak tubing pressure, p_max; area under the pressure curve, …

Outbreak Of Ebola Virus Disease, Alexandra Dimit, Tiffany Kneuss, Joelle Farano, Haley Armstrong, Jodi Otte, Andrew M. Roecker

Pharmacy and Wellness Review

Ebola virus disease (EVD) has existed as a major health concern with devastating and, many times, fatal symptoms. The recent outbreaks of EVD in West Africa and the Democratic Republic of the Congo (DRC) have incited international concern. In this article, the implications of EVD will be discussed including the etiology, transmission, signs and symptoms, diagnosis and treatment of the disease. In addition to this discussion, the manner in which major health care organizations, including the World Health Organization (WHO), are dealing with treating infected patients and containing spread of the disease will be covered.

Single Versus Multi-Center Surgeons' Risk-Adjusted Mitral Valve Repair Procedural Outcomes, Anne Bennett, Thomas Bogue, Samuel Greenberg, Joshua Zhu, Samantha Novotny, Joseph Pizzuti, Lee A. Santore, Robert H. Habib, Annie Laurie Laurie Shroyer, Jonathan Price, Henry Tannous, Thomas Bilfinger

Department of Surgery Faculty Publications

The purpose of this study is to explore strategies to improve mitral valve repair (MVr) outcomes. This research explores postoperative outcomes of patients undergoing MVr surgery by single center surgeons versus patients of multicenter surgeons. Specific outcomes of interest include 30-day operative mortality, major operative complications (e.g., deep sternal wound infection, permanent stroke, renal dysfunction requiring dialysis, reoperation, and prolonged ventilation), length of stay, and 30-day readmissions.

In brief, the serisk-adjusted outcome rates for surgeons that perform mitral valve repair procedures will be compared for surgeons that operate at a single center [i.e. SC surgeons] versus multiple centers [i.e. MC …

Safety Of Endoscopy And Its Outcome In Pregnancy, Lubna Kamani, Muhammad S. Achakzai, Faisal Wasim Ismail, Farhana Kayani

Section of Gastroenterology

Objective: Gastrointestinal (GI) endoscopy is an important tool for diagnosis and treatment of GI diseases. However, when endoscopy is indicated during pregnancy, concerns about its safety for mother and fetus often arise. Our objective was to evaluate the safety and efficacy of endoscopic procedures in pregnant patients along with maternal and fetal outcomes.
Methods: This study was conducted at the Aga Khan University Hospital after Ethics review committee approval. It was a retrospective study and medical records of all pregnant patients who underwent endoscopy during pregnancy from January 2000 to January 2014 were analyzed. Data regarding the indications and type …

The Hiv Vaccine: Learning From Failure And Building On Success, Lindsey Mcclish, Kimberly Gathers, Katie Salay, Lisa Vranekovic, Kristin Seaman, Kelly M. Shields

Pharmacy and Wellness Review

An effective vaccine for acquired immune deficiency syndrome (AIDS) has eluded researchers since the identification of the HIV virus. There are many challenges in developing an effective HIV vaccine, including the lack of knowledge regarding the immune response to the virus and its diverse nature. Ethical concerns further complicate research. A recent phase III trial was performed in Thailand and showed that a significant reduction in HIV infection is possible. Pharmacists need to stay informed of these important breakthroughs in AIDS research in order to provide quality health information to patients in their community. This paper aims to evaluate the …

Increasing The Reinforcing Value Of Exercise In Overweight Adults, Kyle D. Flack, Kelsey Elise Ufholz, Luann Johnson, James N. Roemmich

Dietetics and Human Nutrition Faculty Publications

Objectives: This study determined whether a moderate- or high-dose exercise program increases exercise reinforcement. Increasing the relative reinforcing value of exercise (RRV_exercise; i.e., incentive sensitization of exercise) may increase the usual physical activity (PA) participation. Preference and/or tolerance for the intensity of exercise was also assessed.

Design: Sedentary men and women (body mass index, BMI: 25–35 kg/m²) were randomized into parallel exercise training groups expending either 300 (n = 18) or 600 (n = 18) kcal/exercise session, five sessions/week, for 12 weeks.

Methods: The RRV_exercise was determined by how much …

Alzheimer's And Amyloid Beta: Amyloidogenicity And Tauopathy Via Dyshomeostatic Interactions Of Amyloid Beta, Jordan Tillinghast

Senior Honors Theses

This paper reviews functions of Amyloid-β (Aβ) in healthy individuals compared to the consequences of aberrant Aβ in Alzheimer’s disease (AD). As extraneuronal Aβ accumulation and plaque formation are characteristics of AD, it is reasonable to infer a pivotal role for Aβ in AD pathogenesis. Establishing progress of the disease as well as the mechanism of neurodegeneration from AD have proven difficult (Selkoe, 1994). This thesis provides evidence suggesting the pathogenesis of AD is due to dysfunctional neuronal processes involving Aβ’s synaptic malfunction, abnormal interaction with tau, and disruption of neuronal homeostasis. Significant evidence demonstrates that AD symptoms are partially …

Chronic Muscle Weakness And Mitochondrial Dysfunction In The Absence Of Sustained Atrophy In A Preclinical Sepsis Model, Allison M. Owen, Samir P. Patel, Jeffrey D. Smith, Beverly K. Balasuriya, Stephanie F. Mori, Gregory S. Hawk, Arnold J. Stromberg, Naohide Kuriyama, Masao Kaneki, Alexander G. Rabchevsky, Timothy A. Butterfield, Karyn A. Esser, Charlotte A. Peterson, Marlene E. Starr, Hiroshi Saito

Physiology Faculty Publications

Chronic critical illness is a global clinical issue affecting millions of sepsis survivors annually. Survivors report chronic skeletal muscle weakness and development of new functional limitations that persist for years. To delineate mechanisms of sepsis-induced chronic weakness, we first surpassed a critical barrier by establishing a murine model of sepsis with ICU-like interventions that allows for the study of survivors. We show that sepsis survivors have profound weakness for at least 1 month, even after recovery of muscle mass. Abnormal mitochondrial ultrastructure, impaired respiration and electron transport chain activities, and persistent protein oxidative damage were evident in the muscle of …

Fracture Repair Requires Trka Signaling By Skeletal Sensory Nerves., Zhu Li, Carolyn A Meyers, Leslie Chang, Seungyong Lee, Zhi Li, Ryan Tomlinson, Ahmet Hoke, Thomas L Clemens, Aaron W James

Department of Orthopaedic Surgery Faculty Papers

Bone is richly innervated by nerve growth factor-responsive (NGF-responsive) tropomyosin receptor kinase A-expressing (TrKa-expressing) sensory nerve fibers, which are required for osteochondral progenitor expansion during mammalian skeletal development. Aside from pain sensation, little is known regarding the role of sensory innervation in bone repair. Here, we characterized the reinnervation of tissue following experimental ulnar stress fracture and assessed the impact of loss of TrkA signaling in this process. Sequential histological data obtained in reporter mice subjected to fracture demonstrated a marked upregulation of NGF expression in periosteal stromal progenitors and fracture-associated macrophages. Sprouting and arborization of CGRP+TrkA+ sensory nerve fibers …

Muscle Activation Patterns During Movement Attempts In Children With Acquired Spinal Cord Injury: Neurophysiological Assessment Of Residual Motor Function Below The Level Of Lesion., Darryn A Atkinson, Laura Mendez, Natalie Goodrich, Sevda C Aslan, Beatrice Ugiliweneza, Andrea L Behrman

Physical Therapy Collection

Introduction: Characterization of residual neuromotor capacity after spinal cord injury (SCI) is challenging. The current gold standard for measurement of sensorimotor function after SCI, the International Society for Neurological Classification of Spinal Cord Injury (ISNCSCI) exam, seeks to determine isolated intentional muscle activation, however many individuals with SCI exhibit intentional movements and muscle activation patterns which are not confined to specific joint or muscle. Further, isolated muscle activation is a feature of the neuromuscular system that emerges during development, and thus may not be an appropriate measurement standard for children younger than 6.

Methods: We utilized neurophysiological assessment …

Cardiovascular Risk In Patients With Rheumatoid Arthritis: The Role Of Cholesterylester Transfer Protein, Ali M. Mursi, Emad M. Elshebiny, Lobna Y. Ebrahim, Sahar H. Quashwa, Sherry K. Abdelrahman, Taghreed F. Mohammed Mostafa

Journal of Medicine in Scientific Research

Aim To detect serum level of cholesterylester transfer protein (CETP) (the enzyme involved in reverse cholesterol transport) in patients with rheumatoid arthritis (RA) and to evaluate its relation to various clinical parameters of the disease, lipid profile, and carotid intima-media thickness (CIMT) as a marker of atherosclerosis and cardiovascular disease risk. Patients and methods This study involved a total of 80 participants, comprising 50 patients with RA and 30 age-matched and sex-matched healthy controls. Detailed medical history and thorough clinical examination (general and musculoskeletal) as well as laboratory investigations including lipid profile were performed for all patients with RA. Serum …

Dexamethasone As Abortive Treatment For Refractory Seizures Or Status Epilepticus In The Inpatient Setting, Alexander B. Ramos, Roberto A. Cruz, Nicole R. Villemarette-Pittman, Piotr W. Olejniczak, Edward C. Mader Jr.

School of Medicine Publications

Refractory seizures or status epilepticus (RS/SE) continues to be a challenge in the inpatient setting. Failure to abort a seizure with antiepileptic drugs (AEDs) may lead to intubation and treatment with general anesthesia exposing patients to complications, extending hospitalization, and increasing the cost of care. Studies have shown a key role of inflammatory mediators in seizure generation and termination. We describe 4 patients with RS/SE that was aborted when dexamethasone was added to conventional AEDs: a 61-year-old female with temporal lobe epilepsy who presented with delirium, nonconvulsive status epilepticus, and oculomyoclonic status; a 56-year-old female with history of traumatic left …

A Phase 1 Study Of Intravenous Busulfan As A Conditioning Regimen For Multiple Myeloma, Sabarinath V. Radhakrishnan, Michael Boyer, Catherine M. Sherwin, Maurizio Zangari, Guido Tricot

Pediatrics Faculty Publications

The efficacy of melphalan (MEL) 140 mg/m 2 pre-transplant conditioning versus MEL 200 mg/m 2 for the elderly is still debated. We hypothesized that single-agent intravenous busulfan (BU) would show significant anti-myeloma efficacy and be better tolerated by elderly patients. A prospective 3+3 dose escalation study enrolled symptomatic multiple myeloma (MM) patients 65 years or older with SWOG performance 0–2 for treatment with intravenous BU pre-transplant at different administration levels. The primary objective was to determine the maximum tolerated dose (MTD) of BU that could be safely given over the least number of days. All patients, except one, received maintenance …

Role Of Arginine And/Or Taurine In Protection Against Gentamicin-Induced Nephrotoxicity In Male And Female Rats, Amal H. Emara, Wafaa M. Ismaeil

Journal of Medicine in Scientific Research

Background As a highly effective antibiotic, gentamicin is used in the treatment of serious and life-threatening gram-negative infections. L-arginine (2-amino-5-guanidino-pentanoic acid) has a protective role on renal failure that induced by gentamicin administration and it may decrease the tubular reabsorption of another cationic substance, gentamicin due to its cationic structure. The aim of this study is to determine the influence of gender on nephroprotective effects of L-arginine (Arg) and/or taurine (Tau) on gentamicin (G) induced nephrotoxicity. Methods Adult Sprague-Dawley albino rats of both sexes (150-200 g, 48 male and 48 female), were bred from the animal unit of National Nutrition …

A Comparison Between Monopolar Radiofrequency Ablation And Electrocautery (Diathermy) Ablations In Left Modified Maze (Short-Term Results), Waleed El-Awady

Journal of Medicine in Scientific Research

Introduction Atrial fibrillation is the most common cardiac arrhythmia and is associated with significant morbidity and mortality. The classic cut-and-sew maze procedure is successful in 85–95% of patients. However, it is technically challenging and requires prolonged cardiopulmonary bypass. The left modified maze procedure is successful in 65–85% of patients. The aim of this study was to compare the success of two different ablation sources in the left modified MAZE. Patients and methods Between June 2010 and December 2016, 40 patients underwent left modified MAZE (Cox III) procedure: 20 patients were done with monopolar radiofrequency ablation (group A) and the other …

Tumors Of The Conjunctiva And Cornea., Carol L. Shields, Jerry A. Shields

Wills Eye Hospital Papers

Tumors of the conjunctiva and cornea comprise a large and varied spectrum of conditions. These tumors are grouped into two major categories of congenital and acquired lesions. The acquired lesions are further subdivided based on origin of the mass into surface epithelial, melanocytic, vascular, fibrous, neural, histiocytic, myxoid, myogenic, lipomatous, lymphoid, leukemic, metastatic and secondary tumors. Melanocytic lesions include nevus, racial melanosis, primary acquired melanosis, melanoma, and other ocular surface conditions like ocular melanocytosis and secondary pigmentary deposition. The most frequent nonmelanocytic neoplastic lesions include squamous cell carcinoma and lymphoma, both of which have typical features appreciated on clinical examination. …