Open Access. Powered by Scholars. Published by Universities.®

Medicine and Health Sciences Commons™

Open Access. Powered by Scholars. Published by Universities.®

Thomas Jefferson University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 5791 - 5820 of 14928

Full-Text Articles in Medicine and Health Sciences

Matrine Inhibits Cns Autoimmunity Through An Ifn-Β-Dependent Mechanism, Yaojuan Chu, Wendi Ma, Rodolfo Thome, Jie Dan Ping, Fangzhou Liu, Mengru Wang, Mingliang Zhang, Guang-Xian Zhang, Lin Zhu Sep 2020

Matrine Inhibits Cns Autoimmunity Through An Ifn-Β-Dependent Mechanism, Yaojuan Chu, Wendi Ma, Rodolfo Thome, Jie Dan Ping, Fangzhou Liu, Mengru Wang, Mingliang Zhang, Guang-Xian Zhang, Lin Zhu

Department of Neurology Faculty Papers

Matrine (MAT), a quinolizidine alkaloid component derived from the root of Sophora flavescens, suppresses experimental autoimmune encephalomyelitis (EAE), the animal model of multiple sclerosis (MS), by inducing the production of immunomodulatory molecules, e.g., IL-10. In an effort to find the upstream pathway(s) of the mechanism underlying these effects, we have tested certain upregulated immunomodulatory molecules. Among them, we found increased levels of IL-27 and IFN-β, one of the first-line MS therapies. Indeed, while low levels of IFN-β production in sera and type I interferon receptor (IFNAR1) expression in spinal cord of saline-treated control EAE mice were detected, they were significantly …


On The Expanding Roles Of Trna Fragments In Modulating Cell Behavior, Rogan Magee, Isidore Rigoutsos Sep 2020

On The Expanding Roles Of Trna Fragments In Modulating Cell Behavior, Rogan Magee, Isidore Rigoutsos

Computational Medicine Center Faculty Papers

The fragments that derive from transfer RNAs (tRNAs) are an emerging category of regulatory RNAs. Known as tRFs, these fragments were reported for the first time only a decade ago, making them a relatively recent addition to the ever-expanding pantheon of non-coding RNAs. tRFs are short, 16-35 nucleotides (nts) in length, and produced through cleavage of mature and precursor tRNAs at various positions. Both cleavage positions and relative tRF abundance depend strongly on context, including the tissue type, tissue state, and disease, as well as the sex, population of origin, and race/ethnicity of an individual. These dependencies increase the urgency …


12 Tips To Guarantee A Fragmented (Absolutely Terrible) Curriculum In A Time Of Crisis, Constance Tucker, Abigail Kay Sep 2020

12 Tips To Guarantee A Fragmented (Absolutely Terrible) Curriculum In A Time Of Crisis, Constance Tucker, Abigail Kay

Department of Psychiatry and Human Behavior Faculty Papers

Medical education scholarship is filled with articles focused on rigorous curriculum design and innovation. In the midst of a public health crisis, the authors aim to provide a reflective guide to curriculum development focused on curriculum gone wrong. The authors propose twelve recommendations that will bring all educators closer to curricular failure.


The De Garengeot Hernia: A Case Report Of An Unusual Presentation Of Appendicitis., Davek Sharma, Jacob Katsnelson, Emmanuel Nwachuku, Jeffrey Kolff Sep 2020

The De Garengeot Hernia: A Case Report Of An Unusual Presentation Of Appendicitis., Davek Sharma, Jacob Katsnelson, Emmanuel Nwachuku, Jeffrey Kolff

Abington Jefferson Health Papers

INTRODUCTION: A De Garengeot hernia is defined by a femoral hernia containing the appendix. Acute appendicitis within a femoral hernia is an extremely rare surgical presentation and occurs in only 0.08-0.013% of cases as cited by the literature.

PRESENTATION OF CASE: A 64-year-old female presented to the Emergency Department of our hospital with acute onset of a right-sided groin bulge that occurred earlier that day after doing heavy lifting. Her workup revealed acute appendicitis contained within an incarcerated right femoral hernia. The patient underwent laparoscopic appendectomy with open femoral hernia repair. Intraoperatively, the appendiceal tip was incarcerated within the hernia …


In Reply: Access-Site Complications In Transfemoral Neuroendovascular Procedures: A Systematic Review Of Incidence Rates And Management Strategies, Pascal Jabbour, Ahmad Sweid Sep 2020

In Reply: Access-Site Complications In Transfemoral Neuroendovascular Procedures: A Systematic Review Of Incidence Rates And Management Strategies, Pascal Jabbour, Ahmad Sweid

Department of Neurosurgery Faculty Papers

No abstract provided.


Journal Club - Dapa-Hf Trial, Emma De Louw, Pgy-3 Sep 2020

Journal Club - Dapa-Hf Trial, Emma De Louw, Pgy-3

Department of Family & Community Medicine Presentations and Grand Rounds

No abstract provided.


The Role Of Nerves In Skeletal Development, Adaptation, And Aging., Ryan E Tomlinson, Blaine A Christiansen, Adrienne A Giannone, Damian C Genetos Sep 2020

The Role Of Nerves In Skeletal Development, Adaptation, And Aging., Ryan E Tomlinson, Blaine A Christiansen, Adrienne A Giannone, Damian C Genetos

Department of Orthopaedic Surgery Faculty Papers

The skeleton is well-innervated, but only recently have the functions of this complex network in bone started to become known. Although our knowledge of skeletal sensory and sympathetic innervation is incomplete, including the specific locations and subtypes of nerves in bone, we are now able to reconcile early studies utilizing denervation models with recent work dissecting the molecular signaling between bone and nerve. In total, sensory innervation functions in bone much as it does elsewhere in the body-to sense and respond to stimuli, including mechanical loading. Similarly, sympathetic nerves regulate autonomic functions related to bone, including homeostatic remodeling and vascular …


Hepatic Lipocalin 2 Promotes Liver Fibrosis And Portal Hypertension, Jiegen Chen, Josepmaria Argemi, Gemma Odena, Ming-Jiang Xu, Yan Cai, Veronica Massey, Austin Parrish, Rajanikanth Vadigepalli, Jose Altamirano, Joaquin Cabezas, Pere Gines, Juan Caballeria, Natasha Snider, Pau Sancho-Bru, Shizuo Akira, Ivan Rusyn, Bin Gao, Ramon Bataller Sep 2020

Hepatic Lipocalin 2 Promotes Liver Fibrosis And Portal Hypertension, Jiegen Chen, Josepmaria Argemi, Gemma Odena, Ming-Jiang Xu, Yan Cai, Veronica Massey, Austin Parrish, Rajanikanth Vadigepalli, Jose Altamirano, Joaquin Cabezas, Pere Gines, Juan Caballeria, Natasha Snider, Pau Sancho-Bru, Shizuo Akira, Ivan Rusyn, Bin Gao, Ramon Bataller

Department of Pathology, Anatomy, and Cell Biology Faculty Papers

Advanced fibrosis and portal hypertension influence short-term mortality. Lipocalin 2 (LCN2) regulates infection response and increases in liver injury. We explored the role of intrahepatic LCN2 in human alcoholic hepatitis (AH) with advanced fibrosis and portal hypertension and in experimental mouse fibrosis. We found hepatic LCN2 expression and serum LCN2 level markedly increased and correlated with disease severity and portal hypertension in patients with AH. In control human livers, LCN2 expressed exclusively in mononuclear cells, while its expression was markedly induced in AH livers, not only in mononuclear cells but also notably in hepatocytes. Lcn2−/− mice were protected from liver …


How Accurate Is The Neurosurgery Literature? A Review Of References., Thiago S Montenegro, Kevin Hines, Glenn A Gonzalez, Umma Fatema, Paul P Partyka, Sara Thalheimer, James Harrop Sep 2020

How Accurate Is The Neurosurgery Literature? A Review Of References., Thiago S Montenegro, Kevin Hines, Glenn A Gonzalez, Umma Fatema, Paul P Partyka, Sara Thalheimer, James Harrop

Department of Neurosurgery Faculty Papers

BACKGROUND: The reference list is an important part of academic manuscripts. The goal of this study is to evaluate the reference accuracy in the field of neurosurgery.

METHODS: This study examines four major peer-reviewed neurosurgery journals, chosen based on their clinical impact factor: Neurosurgery, J Neurosurg, World Neurosurg, and Acta Neurochir. For each of the four journals, five articles from each of the journal's 12 issues published in 2019 were randomly selected using an online generator. This resulted in a total of 240 articles, 60 from each journal. Additionally, from each article's list of references, one reference was again randomly …


Soluble Glycoprotein Vi Is A Predictor Of Major Bleeding In Patients With Suspected Heparin-Induced Thrombocytopenia, Allyson M Pishko, Robert K Andrews, Elizabeth E Gardiner, Daniel S Lefler, Adam Cuker Sep 2020

Soluble Glycoprotein Vi Is A Predictor Of Major Bleeding In Patients With Suspected Heparin-Induced Thrombocytopenia, Allyson M Pishko, Robert K Andrews, Elizabeth E Gardiner, Daniel S Lefler, Adam Cuker

Department of Medical Oncology Faculty Papers

We have shown that patients with suspected heparin-induced thrombocytopenia (HIT) have a high incidence of major bleeding. Recent studies have implicated elevated soluble glycoprotein VI (sGPVI) levels as a potential risk factor for bleeding. We sought to determine if elevated sGPVI plasma levels are associated with major bleeding events in patients with suspected HIT. We used a cohort of 310 hospitalized adult patients with suspected HIT who had a blood sample collected at the time HIT was suspected. Plasma sGPVI levels were measured by using enzyme-linked immunosorbent assay. Patients were excluded who had received a platelet transfusion within 1 day …


The Impact Of Fremanezumab On Medication Overuse In Patients With Chronic Migraine: Subgroup Analysis Of The Halo Cm Study., Stephen D. Silberstein, Joshua M. Cohen, Michael J. Seminerio, Ronghua Yang, Sait Ashina, Zaza Katsarava Sep 2020

The Impact Of Fremanezumab On Medication Overuse In Patients With Chronic Migraine: Subgroup Analysis Of The Halo Cm Study., Stephen D. Silberstein, Joshua M. Cohen, Michael J. Seminerio, Ronghua Yang, Sait Ashina, Zaza Katsarava

Department of Neurology Faculty Papers

BACKGROUND: We evaluated the efficacy of fremanezumab, a fully humanized monoclonal antibody that selectively targets calcitonin gene-related peptide, in patients with chronic migraine (CM) with and without medication overuse (MO).

METHODS: In a 12-week, phase 3 trial, patients with CM were randomized to fremanezumab quarterly (675 mg/placebo/placebo), monthly (675 mg/225 mg/225 mg), or placebo. Post hoc analyses assessed the impact of fremanezumab in patients with and without MO (monthly use of acute headache medication ≥15 days, migraine-specific acute medication ≥10 days, or combination medication ≥10 days) on efficacy outcomes, including headache days of at least moderate severity (HDs), and six-item …


Sphenopalatine Ganglion Stimulation Upregulates Transport Of Temozolomide Across The Blood-Brain Barrier, Thana N. Theofanis, Ankit K. Rochani, Richard F. Schmidt, Michael J. Lang, Geoffrey P. Stricsek, Robert H. Rosenwasswer, Ashwini D. Sharan, Gagan Kaushal, Lorraine Iacovitti Sep 2020

Sphenopalatine Ganglion Stimulation Upregulates Transport Of Temozolomide Across The Blood-Brain Barrier, Thana N. Theofanis, Ankit K. Rochani, Richard F. Schmidt, Michael J. Lang, Geoffrey P. Stricsek, Robert H. Rosenwasswer, Ashwini D. Sharan, Gagan Kaushal, Lorraine Iacovitti

Department of Neurosurgery Faculty Papers

Sphenopalatine ganglion (SPG) stimulation has been shown to reversibly alter blood-brainbarrier (BBB) permeability. It is widely used for the treatment of cluster headaches in Europe and iswell tolerated in humans. The therapeutic potential for SPG stimulation in other central nervoussystem (CNS) diseases has yet to be explored. Glioblastoma Multiforme (GBM) remains one of themost difficult primary CNS neoplasms to treat, with an average survival of approximately 18 months atthe time of diagnosis. Since 2004, the gold standard of treatment for GBM in the United States includessurgery followed by treatment with temozolomide (TMZ) and radiation. We sought to determine ifSPG stimulation …


Facial Grimace Testing As An Assay Of Neuropathic Pain-Related Behavior In A Mouse Model Of Cervical Spinal Cord Injury., Nicolette M Heinsinger, Gabrielle Spagnuolo, R Vivian Allahyari, Simon Galer, Tyler Fox, David A Jaffe, Samantha J Thomas, Lorraine Iacovitti, Angelo C Lepore Sep 2020

Facial Grimace Testing As An Assay Of Neuropathic Pain-Related Behavior In A Mouse Model Of Cervical Spinal Cord Injury., Nicolette M Heinsinger, Gabrielle Spagnuolo, R Vivian Allahyari, Simon Galer, Tyler Fox, David A Jaffe, Samantha J Thomas, Lorraine Iacovitti, Angelo C Lepore

Department of Neuroscience Faculty Papers

A major portion of individuals affected by traumatic spinal cord injury (SCI) experience one or more types of chronic neuropathic pain (NP), which is often intractable to currently available treatments. The availability of reliable behavioral assays in pre-clinical models of SCI-induced NP is therefore critical to assess the efficacy of new potential therapies. Commonly used assays to evaluate NP-related behavior in rodents, such as Hargreaves thermal and von Frey mechanical testing, rely on the withdrawal response to an evoked stimulus. However, other assays that test spontaneous/non-evoked NP-related behavior or supraspinal aspects of NP would be highly useful for a more …


Use Of Advanced Statistical Techniques To Predict All-Cause Mortality In The Systolic Blood Pressure Intervention Trial, William Kostis, Javier Cabrera, Chun Pang Lin, John Kostis, Jennifer Wellings, Stavros Zinonos, Jeanne Dobrzynski, Daniel Blickstein Sep 2020

Use Of Advanced Statistical Techniques To Predict All-Cause Mortality In The Systolic Blood Pressure Intervention Trial, William Kostis, Javier Cabrera, Chun Pang Lin, John Kostis, Jennifer Wellings, Stavros Zinonos, Jeanne Dobrzynski, Daniel Blickstein

Department of Medicine Faculty Papers

Background: The Systolic Blood Pressure Intervention Trial (SPRINT) was conducted in patients with hypertension and additional risk for cardiovascular disease who were randomized to the intensive blood pressure group targeting systolic blood pressure (SBP) less than 120 mm Hg and to the standard group where the target was less than 140 mm Hg. Analyses were done in the matched group of participants with the same gender, same age (±2 years) and same SBP (±3 mm Hg) at three months of treatment regardless of initial randomization to intensive or standard group (shaded area in Figure 1). Methods and results: During 3.26 …


Following Patients With Severe Coronary Artery Calcifications Detected By Low-Dose Ct Scan For Lung Cancer Screening, Amry Majeed, Christine Shusted, Brooke Ruane, Julie Barta Sep 2020

Following Patients With Severe Coronary Artery Calcifications Detected By Low-Dose Ct Scan For Lung Cancer Screening, Amry Majeed, Christine Shusted, Brooke Ruane, Julie Barta

Phase 1

Introduction:

Recommendations for lose-dose CT screening for lung cancer (LC) targets a population at concomitant risk for coronary disease. Coronary artery calcifications (CAC) are an independent predictor of cardiovascular events among screening patients, and atherosclerotic cardiovascular disease (ASCVD) was the leading cause of death in the National Lung Screening Trial. In this study, we tested the hypothesis that patients with severe CAC undergo more risk factor modification when seen by a cardiologist.

Methods:

A chart review assessing patients found to have severe CAC on screening LDCT between January 2018 and April 2019 was conducted. Patient demographics, medical history, and …


The Membrane-Associated Form Of Cyclin D1 Enhances Cellular Invasion, Ke Chen, Xuanmao Jiao, Anthony Ashton, Agnese Di Rocco, Timothy G Pestell, Yunguang Sun, Jun Zhao, Mathew C Casimiro, Zhiping Li, Michael P Lisanti, Peter Mccue, Duanwen Shen, Samuel Achilefu, Hallgeir Rui, Richard G Pestell Sep 2020

The Membrane-Associated Form Of Cyclin D1 Enhances Cellular Invasion, Ke Chen, Xuanmao Jiao, Anthony Ashton, Agnese Di Rocco, Timothy G Pestell, Yunguang Sun, Jun Zhao, Mathew C Casimiro, Zhiping Li, Michael P Lisanti, Peter Mccue, Duanwen Shen, Samuel Achilefu, Hallgeir Rui, Richard G Pestell

Department of Cancer Biology Faculty Papers

The essential G1-cyclin, CCND1, is a collaborative nuclear oncogene that is frequently overexpressed in cancer. D-type cyclins bind and activate CDK4 and CDK6 thereby contributing to G1-S cell-cycle progression. In addition to the nucleus, herein cyclin D1 was also located in the cytoplasmic membrane. In contrast with the nuclear-localized form of cyclin D1 (cyclin D1NL), the cytoplasmic membrane-localized form of cyclin D1 (cyclin D1MEM) induced transwell migration and the velocity of cellular migration. The cyclin D1MEM was sufficient to induce G1-S cell-cycle progression, cellular proliferation, and colony formation. The cyclin D1MEM was sufficient to induce phosphorylation of the serine threonine …


Case Report: Tocilizumab For The Treatment Of Sars-Cov-2 Infection In A Patient With Aplastic Anemia, Gina Keiffer, Zach French, Lindsay Wilde, Joanne Filicko-O'Hara, Usama Gergis, Adam Binder Sep 2020

Case Report: Tocilizumab For The Treatment Of Sars-Cov-2 Infection In A Patient With Aplastic Anemia, Gina Keiffer, Zach French, Lindsay Wilde, Joanne Filicko-O'Hara, Usama Gergis, Adam Binder

Department of Medicine Faculty Papers

While cytokine storm develops in a minority of patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, novel treatment approaches are desperately needed for those in whom it does. Tocilizumab, an interleukin-6 receptor antibody, has been utilized for the treatment of cytokine storm in a number of severe inflammatory conditions, including in patients with severe coronavirus disease 2019 (COVID-19). Here, we present the first published case utilizing this therapy in a patient with underlying immunodeficiency. Our patient with aplastic anemia developed cytokine storm due to COVID-19 manifested by fever, severe hypoxia, pulmonary infiltrates, and elevated inflammatory markers. Following treatment …


Pain In The Prehospital Setting In Rwanda: Results Of A Mixed-Methods Quality Improvement Project., A Rosenberg, E Uwitonze, M Dworkin, J P D Guidry, T Cyuzuzo, D Banerjee, K Mcintyre, K Carlyle, J M Uwitonze, I Kabagema, T Dushime, S Jayaraman Sep 2020

Pain In The Prehospital Setting In Rwanda: Results Of A Mixed-Methods Quality Improvement Project., A Rosenberg, E Uwitonze, M Dworkin, J P D Guidry, T Cyuzuzo, D Banerjee, K Mcintyre, K Carlyle, J M Uwitonze, I Kabagema, T Dushime, S Jayaraman

Student Papers, Posters & Projects

Introduction: Pain is a universal human experience tied to an individual's health but difficult to understand. It is especially important in health emergencies. We performed a two-step quality improvement project to assess pain management by the SAMU ambulance service in Kigali, Rwanda, examining how pain is assessed and treated by ambulance staff to facilitate development of standardized guidelines of pain management in the prehospital setting, which did not exist at the time of the study.

Materials and Methods: Deidentified ambulance service records from December 2012 to May 2016 were analyzed descriptively for patient demographics, emergency conditions, pain assessment, and medications …


Cbf-1 Promotes The Establishment And Maintenance Of Hiv Latency By Recruiting Polycomb Repressive Complexes, Prc1 And Prc2, At Hiv Ltr., Adhikarimayum Lakhikumar Sharma, Joseph Hokello, Shilpa Sonti, Sonia Zicari, Lin Sun, Aseel Alqatawni, Michael Bukrinsky, Gary Simon, Ashok Chauhan, René Daniel, Mudit Tyagi Sep 2020

Cbf-1 Promotes The Establishment And Maintenance Of Hiv Latency By Recruiting Polycomb Repressive Complexes, Prc1 And Prc2, At Hiv Ltr., Adhikarimayum Lakhikumar Sharma, Joseph Hokello, Shilpa Sonti, Sonia Zicari, Lin Sun, Aseel Alqatawni, Michael Bukrinsky, Gary Simon, Ashok Chauhan, René Daniel, Mudit Tyagi

Center for Translational Medicine Faculty Papers

The C-promoter binding factor-1 (CBF-1) is a potent and specific inhibitor of the human immunodeficiency virus (HIV)-1 LTR promoter. Here, we demonstrate that the knockdown of endogenous CBF-1 in latently infected primary CD4+ T cells, using specific small hairpin RNAs (shRNA), resulted in the reactivation of latent HIV proviruses. Chromatin immunoprecipitation (ChIP) assays using latently infected primary T cells and Jurkat T-cell lines demonstrated that CBF-1 induces the establishment and maintenance of HIV latency by recruiting polycomb group (PcG/PRC) corepressor complexes or polycomb repressive complexes 1 and 2 (PRC1 and PRC2). Knockdown of CBF-1 resulted in the dissociation of PRCs …


Educational Case: A Case Of Transfusion-Transmitted Babesiosis: Diagnostic Perspectives Across The Clinical Laboratory., Kaitlyn Dykes, Alexis R. Peedin Sep 2020

Educational Case: A Case Of Transfusion-Transmitted Babesiosis: Diagnostic Perspectives Across The Clinical Laboratory., Kaitlyn Dykes, Alexis R. Peedin

Department of Pathology, Anatomy, and Cell Biology Faculty Papers

The following fictional case is intended as a learning tool within the Pathology Competencies for Medical Education (PCME), a set of national standards for teaching pathology. These are divided into three basic competencies: Disease Mechanisms and Processes, Organ System Pathology, and Diagnostic Medicine and Therapeutic Pathology.


Linguistic Analysis Of Empathy In Medical School Admission Essays, Mary Yaden, David Yaden, Anneke Buffone, Johannes Eichstaedt, Patrick Crutchley, Laura Smith, Jonathan Cass, Clara Callahan, Susan Rosenthal, Lyle Ungar, Andrew Schwartz, Mohammadreza Hojat Sep 2020

Linguistic Analysis Of Empathy In Medical School Admission Essays, Mary Yaden, David Yaden, Anneke Buffone, Johannes Eichstaedt, Patrick Crutchley, Laura Smith, Jonathan Cass, Clara Callahan, Susan Rosenthal, Lyle Ungar, Andrew Schwartz, Mohammadreza Hojat

Department of Psychiatry and Human Behavior Faculty Papers

Objectives: This study aimed to determine whether words used in medical school admissions essays can predict physician empathy.

Methods: A computational form of linguistic analysis was used for the content analysis of medical school admissions essays. Words in medical school admissions essays were computationally grouped into 20 'topics' which were then correlated with scores on the Jefferson Scale of Empathy. The study sample included 1,805 matriculants (between 2008-2015) at a single medical college in the North East of the United States who wrote an admissions essay and completed the Jefferson Scale of Empathy at matriculation.

Results: After correcting for multiple …


A Sonographer’S Step-By-Step Approach For Preventing Transmission Of Covid-19, Corinne Wessner, Joann Nelson, Sarah Mott, Maria Francesco, Laurence Needleman Sep 2020

A Sonographer’S Step-By-Step Approach For Preventing Transmission Of Covid-19, Corinne Wessner, Joann Nelson, Sarah Mott, Maria Francesco, Laurence Needleman

Department of Radiology Faculty Papers

The 2019 novel coronavirus, known as COVID-19, has greatly affected the way sonographers care for their patients. Sonography can be a useful imaging tool for surveillance and diagnosis of various conditions associated with COVID-19 patients or patients under investigation (PUIs). Currently, there are limited resources and protocols for preventing the transmission of COVID-19 from ultrasound equipment. Our institution has created a detailed protocol for scanning COVID-19 patients or PUIs to address this important issue.


Ier5, A Dna Damage Response Gene, Is Required For Notch-Mediated Induction Of Squamous Cell Differentiation, Li Pan, Madeleine E Lemieux, Tom Thomas, Julia M Rogers, Colin H Lipper, Winston Lee, Carl Johnson, Lynette M Sholl, Andrew P. South, Jarrod A Marto, Guillaume O Adelmant, Stephen C Blacklow, Jon C Aster Sep 2020

Ier5, A Dna Damage Response Gene, Is Required For Notch-Mediated Induction Of Squamous Cell Differentiation, Li Pan, Madeleine E Lemieux, Tom Thomas, Julia M Rogers, Colin H Lipper, Winston Lee, Carl Johnson, Lynette M Sholl, Andrew P. South, Jarrod A Marto, Guillaume O Adelmant, Stephen C Blacklow, Jon C Aster

Department of Dermatology and Cutaneous Biology Faculty Papers

Notch signaling regulates squamous cell proliferation and differentiation and is frequently disrupted in squamous cell carcinomas, in which Notch is tumor suppressive. Here, we show that conditional activation of Notch in squamous cells activates a context-specific gene expression program through lineage-specific regulatory elements. Among direct Notch target genes are multiple DNA damage response genes, including IER5, which we show is required for Notch-induced differentiation of squamous carcinoma cells and TERT-immortalized keratinocytes. IER5 is epistatic to PPP2R2A, a gene that encodes the PP2A B55α subunit, which we show interacts with IER5 in cells and in purified systems. Thus, Notch and DNA-damage …


Endogenous Cyclin D1 Promotes The Rate Of Onset And Magnitude Of Mitogenic Signaling Via Akt1 Ser473 Phosphorylation., Ke Chen, Xuanmao Jiao, Agnese Di Rocco, Duanwen Shen, Shaohua Xu, Adam Ertel, Zuoren Yu, Gabriele Di Sante, Min Wang, Zhiping Li, Timothy G Pestell, Mathew C Casimiro, Emmanuel Skordalakes, Samuel Achilefu, Richard G Pestell Sep 2020

Endogenous Cyclin D1 Promotes The Rate Of Onset And Magnitude Of Mitogenic Signaling Via Akt1 Ser473 Phosphorylation., Ke Chen, Xuanmao Jiao, Agnese Di Rocco, Duanwen Shen, Shaohua Xu, Adam Ertel, Zuoren Yu, Gabriele Di Sante, Min Wang, Zhiping Li, Timothy G Pestell, Mathew C Casimiro, Emmanuel Skordalakes, Samuel Achilefu, Richard G Pestell

Department of Cancer Biology Faculty Papers

Cyclin D1 encodes the regulatory subunit of a holoenzyme that phosphorylates RB and functions as a collaborative nuclear oncogene. The serine threonine kinase Akt plays a pivotal role in the control of cellular metabolism, survival, and mitogenic signaling. Herein, Akt1-mediated phosphorylation of downstream substrates in the mammary gland is reduced by cyclin D1 genetic deletion and is induced by mammary-gland-targeted cyclin D1 overexpression. Cyclin D1 is associated with Akt1 and augments the rate of onset and maximal cellular Akt1 activity induced by mitogens. Cyclin D1 is identified in a cytoplasmic-membrane-associated pool, and cytoplasmic-membrane-localized cyclin D1-but not nuclear-localized cyclin D1-recapitulates Akt1 …


Access-Site Complications In Transfemoral Neuroendovascular Procedures: A Systematic Review Of Incidence Rates And Management Strategies, Mazen Oneissi, Ahmad Sweid, Md, Stavropoula Tjoumakaris, David Hasan, Michael R. Gooch, Md, Robert H. Rosenwasswer Md, Pascal Jabbour Sep 2020

Access-Site Complications In Transfemoral Neuroendovascular Procedures: A Systematic Review Of Incidence Rates And Management Strategies, Mazen Oneissi, Ahmad Sweid, Md, Stavropoula Tjoumakaris, David Hasan, Michael R. Gooch, Md, Robert H. Rosenwasswer Md, Pascal Jabbour

Department of Neurosurgery Faculty Papers

BACKGROUND: The femoral artery is the most common access route for cerebral angiography and neurointerventional procedures. Complications of the transfemoral approach include groin hemorrhages and hematomas, retroperitoneal hematomas, pseudoaneurysms, arteriovenous fistulas, peripheral artery occlusions, femoral nerve injuries, and access-site infections. Incidence rates vary among different randomized and nonrandomized trials, and the literature lacks a comprehensive review of this subject.

OBJECTIVE: To gather data from 16 randomized clinical trials (RCT) and 17 nonrandomized cohort studies regarding femoral access-site complications for a review paper. We also briefly discuss management strategies for these complications based on the most recent literature.

METHODS: A PubMed …


Hepatocellular Carcinoma-The Influence Of Immunoanatomy And The Role Of Immunotherapy, Keyur Patel, Ryan Lamm, Peter Altshuler, Hien Dang, Ashesh P. Shah, Md Sep 2020

Hepatocellular Carcinoma-The Influence Of Immunoanatomy And The Role Of Immunotherapy, Keyur Patel, Ryan Lamm, Peter Altshuler, Hien Dang, Ashesh P. Shah, Md

Department of Surgery Faculty Papers

Hepatocellular carcinoma (HCC) is a leading cause of cancer-related morbidity and mortality worldwide. Most patients are diagnosed with advanced disease, limiting their options for treatment. While current treatments are adequate for lower staged disease, available systemic treatments are limited, with marginal benefit at best. Chimeric antigen receptor (CAR) T cell therapy, effective in treating liquid tumors such as B-cell lymphoma, presents a potentially promising treatment option for advanced HCC. However, new challenges specific to solid tumors, such as tumor immunoanatomy or the immune cell presence and position anatomically and the tumor microenvironment, need to be defined and overcome. Immunotherapy currently …


Cells From Discarded Dressings Differentiate Chronic From Acute Wounds In Patients With Epidermolysis Bullosa, Ignacia Fuentes, Christina Guttmann-Gruber, Birgit Tockner, Anja Diem, Alfred Klausegger, Glenda Cofré-Araneda, Olga Figuera, Yessia Hidalgo, Pilar Morandé, Francis Palisson, Boris Rebolledo-Jaramillo, María Joao Yubero, Raymond J Cho, Heather I Rishel, M Peter Marinkovich, Joyce M C Teng, Timothy G. Webster, Marco Prisco, Luis H. Eraso, Josefina Piñon Hofbauer, Andrew P. South Sep 2020

Cells From Discarded Dressings Differentiate Chronic From Acute Wounds In Patients With Epidermolysis Bullosa, Ignacia Fuentes, Christina Guttmann-Gruber, Birgit Tockner, Anja Diem, Alfred Klausegger, Glenda Cofré-Araneda, Olga Figuera, Yessia Hidalgo, Pilar Morandé, Francis Palisson, Boris Rebolledo-Jaramillo, María Joao Yubero, Raymond J Cho, Heather I Rishel, M Peter Marinkovich, Joyce M C Teng, Timothy G. Webster, Marco Prisco, Luis H. Eraso, Josefina Piñon Hofbauer, Andrew P. South

Department of Dermatology and Cutaneous Biology Faculty Papers

Impaired wound healing complicates a wide range of diseases and represents a major cost to healthcare systems. Here we describe the use of discarded wound dressings as a novel, cost effective, accessible, and non-invasive method of isolating viable human cells present at the site of skin wounds. By analyzing 133 discarded wound dressings from 51 patients with the inherited skin-blistering disease epidermolysis bullosa (EB), we show that large numbers of cells, often in excess of 100 million per day, continually infiltrate wound dressings. We show, that the method is able to differentiate chronic from acute wounds, identifying significant increases in …


Fad Diets, Simon Newsom, Pgy-3 Sep 2020

Fad Diets, Simon Newsom, Pgy-3

Department of Family & Community Medicine Presentations and Grand Rounds

Overview

  • Brief history of dieting

  • Overview of different types of fad diets

  • Conditions affected by specific dieting

  • Physicians role in dieting


Factors Affecting The Decision To Initiate Anticoagulation After Spine Surgery: Findings From The Aospine Anticoagulation Global Initiative, Sapan D Gandhi, Krishn Khanna, Garrett Harada, Philip Louie, James Harrop, Thomas Mroz, Khalid Al-Saleh, Giovanni Barbanti Brodano, Jens Chapman, Michael G Fehlings, Serena S Hu, Yoshiharu Kawaguchi, Michael Mayer, Venugopal Menon, Jong-Beom Park, Shanmuganathan Rajasekaran, Marcelo Valacco, Luiz Vialle, Jeffrey C Wang, Karsten Wiechert, K Daniel Riew, Dino Samartzis Sep 2020

Factors Affecting The Decision To Initiate Anticoagulation After Spine Surgery: Findings From The Aospine Anticoagulation Global Initiative, Sapan D Gandhi, Krishn Khanna, Garrett Harada, Philip Louie, James Harrop, Thomas Mroz, Khalid Al-Saleh, Giovanni Barbanti Brodano, Jens Chapman, Michael G Fehlings, Serena S Hu, Yoshiharu Kawaguchi, Michael Mayer, Venugopal Menon, Jong-Beom Park, Shanmuganathan Rajasekaran, Marcelo Valacco, Luiz Vialle, Jeffrey C Wang, Karsten Wiechert, K Daniel Riew, Dino Samartzis

Department of Neurosurgery Faculty Papers

STUDY DESIGN: Cross-sectional, international survey.

OBJECTIVES: To identify factors influencing pharmacologic anticoagulation initiation after spine surgery based on the AOSpine Anticoagulation Global Survey.

METHODS: This survey was distributed to the international membership of AOSpine (n = 3805). A Likert-type scale described grade practice-specific factors on a scale from low (1) to high (5) importance, and patient-specific factors a scale from low (0) to high (3) importance. Analysis was performed to determine which factors were significant in the decision making surrounding the initiation of pharmacologic anticoagulation.

RESULTS: A total of 316 spine surgeons from 64 countries completed the survey. In terms …


Hiv/Hcv/Sti Cases, Marshal Miller, Md, Aahivs Sep 2020

Hiv/Hcv/Sti Cases, Marshal Miller, Md, Aahivs

Department of Family & Community Medicine Presentations and Grand Rounds

Objectives:

  • Discuss approach to Syphilis testing and management in persons infected with HIV and HIV negative patients
  • Review strategies to improve ART adherence
  • Review ART options and considerations for initiating and modifying ART and clinically relevant Rx-Rx interactions
  • Assess patients for HCV treatment and review simplified treatment strategies for patients with chronic HCV infection