Medical Specialties Commons^™

Dentistry’S Supporting Role For Cancer Patients, Christopher J. Smiley

The Journal of the Michigan Dental Association

Cancer diagnosis overwhelms patients and caregivers. As the spouse of a patient with leukemia who received bone marrow transplant therapy, I share insights into the challenges these patients face. Oral healthcare professionals play a vital role during these trials. Dental teams, often at the oncology's behest, conduct comprehensive exams and treatments before cancer therapy starts. Providing timely and efficient dental care is essential to achieve clearance to proceed with cancer therapy. Dental infections can be catastrophic for these patients who may be immune compromised. Untreated oral issues could lead to hospitalization, jeopardizing treatment schedules. Advocating for patients' financial needs, often …

J Mich Dent Assoc April 2020

The Journal of the Michigan Dental Association

This April 2020 issue of the Journal of the Michigan Dental Association presents original feature content on:

• Oral Health Considerations for Cancer Therapy Patients, with articles on Blood Cancer and Oral Health authored by an expert team from the Leukemia and Lymphoma Society (LLS) and a Review of practical interventions for dental providers to address oral complications in cancer patients, authored by experts from the Ohio State University College of Dentistry.
• We continue our feature series on implementing an evidence-based process into clinical care with an article on developing critical appraisal skills to assess literature authored by Dr. Julie Frantsve-Hawley, …

Ensuring Accountability To Affected Populations In Humanitarian Settings: "Holding Humanitarian Organizations Accountable To People.", Jazmin Williamson

Independent Study Project (ISP) Collection

Aim: This research aims to examine what guidelines and regulations help ensure that humanitarian organizations are held accountable to their beneficiary populations.

Background: Although people have always been the focus of humanitarian aid, their voice and participation didn't become a centralized part of the conversation until the 1990s and later gained real traction in the early 2000s. During these times, many new foundational documents were created to highlight the "centrality of local participation in aid." Among the documents that enshrined this new principle of population participation included the 1992 Code of Conduct for the International Red Cross and Red Crescent …

Encuentros Intergeneracionales: Continuidades Y Reformulaciones En Las Prácticas Militantes De Las Jóvenes Integrantes De Espacios De Acompañamiento De Aborto En La Amba / Intergenerational Encounters: Continuities And Reformulations In The Activist Practices Of The Young Members Of Abortion Accompaniment Spaces In The Amba, Hannah Robinson

Independent Study Project (ISP) Collection

Debido al acceso restrictivo de los abortos legales, en los últimos diez años los espacios de acompañamiento de personas que quieren interrumpir la gestación se han convertido en un sitio importante de la militancia feminista en Argentina. Estos espacios o colectivos brindan información sobre el uso del medicamento misoprostol para abortar, conectan las personas gestantes con profesionales de salud “amigables” que garantizan el acceso al Interrupción Legal del Embarazo, y proveen apoyo durante el proceso de interrupción. Al mismo tiempo, en los últimos cinco años una marea de jóvenes ha entrado masivamente a la militancia feminista.

A través de la …

The Social Dimensions Of Reproductive Health: Analyzing Disparities In Morocco Through Health Indicators And Social Determinants, Mila Sicorsky

Independent Study Project (ISP) Collection

This paper explores the social dimensions of reproductive health in Morocco through a look at its health indicators and social determinants. Existing literature discusses reproductive health differences that run on economic, social, and cultural lines. In this paper, I shed light on how best to measure and understand these disparities. The research shows that reproductive health in Morocco is most accurately indicated by maternal mortality rates (MMR), access to prenatal and postnatal visits, and access to adequate family planning. It also finds that location of residence, economic status, and women’s status are key social determinants of reproductive health in Morocco. …

Extracorporeal Membrane Oxygenation As A Bridge To Chimeric Antigen Receptor T-Cell Therapy For Severe Refractory Sepsis In The Setting Of Relapsed Refractory Pediatric Acute Lymphoblastic Leukemia: A Case Report., Alyssa Stoner, Jenna Miller, Terrie Flatt, Jessica S. Wallisch

Manuscripts, Articles, Book Chapters and Other Papers

Pediatric oncology patients with sepsis are at higher risk of morbidity and mortality compared with pediatric patients without malignancy. Historically, patients with relapsed and/or refractory disease were not considered candidates for aggressive life support strategies including extracorporeal membrane oxygenation support.

Case Summary: We report a 4-year-old female with relapsed refractory pre-B cell acute lymphoblastic leukemia preparing for chimeric antigen receptor T cell therapy with tisagenlecleucel who was admitted with fever and neutropenia. She progressed to refractory septic shock secondary to

Conclusion: The ability to provide chimeric antigen receptor T-cell therapy at designated institutions can augment extracorporeal membrane oxygenation candidacy discussions …

Analysis Of Ptv Margins For Vmat Treatment Of Rectal Cancers Utilizing Prone Bellyboard Device., Ben Armbuster

Masters Projects

Utilization of a bellyboard device reduces small bowel dose for patients receiving radiation therapy for rectal cancer. The reduction of small bowel dose with the bellyboard is even more significant in intensity modulated radiation therapy rectal treatments, as opposed to conventional 3D treatments. However, there is evidence of increased setup variation with prone bellyboard positioning, especially in pitch and roll. The purpose of this study is to determine the margin needed between the clinical target volume and the planning target volume to adequately account for these setup variations when planning volumetric modulated arc therapy rectal cases utilizing the bellyboard device. …

Urinary Epidermal Growth Factor As A Marker Of Disease Progression In Children With Nephrotic Syndrome., Debbie S. Gipson, Howard Trachtman, Anne Waldo, Keisha L. Gibson, Sean Eddy, Katherine M. Dell, Tarak Srivastava, Kevin V. Lemley, Larry A. Greenbaum, Sangeeta Hingorani, Kevin E. Meyers, Frederick J. Kaskel, Kimberly J. Reidy, Christine B. Sethna, Cheryl L. Tran, Chia-Shi Wang, Katherine R. Tuttle, Gia Oh, Alicia M. Neu, Elizabeth Brown, Jen-Jar Lin, Jennifer Lai Yee, Therese M M. Roth, Jonathan P. Troost, Brenda W. Gillespie, Matthew G. Sampson, Matthias Kretzler, Wenjun Ju

Manuscripts, Articles, Book Chapters and Other Papers

Introduction: Childhood-onset nephrotic syndrome has a variable clinical course. Improved predictive markers of long-term outcomes in children with nephrotic syndrome are needed. This study tests the association between baseline urinary epidermal growth factor (uEGF) excretion and longitudinal kidney function in children with nephrotic syndrome.

Methods: The study evaluated 191 participants younger than 18 years enrolled in the Nephrotic Syndrome Study Network, including 118 with their first clinically indicated kidney biopsy (68 minimal change disease; 50 focal segmental glomerulosclerosis) and 73 with incident nephrotic syndrome without a biopsy. uEGF was measured at baseline for all participants and normalized by the urine …

Drug Deprescription-Withdrawal Risk, Prevention, And Treatment, Madison K Bangert, Gabriel M Aisenberg

Faculty, Staff and Student Publications

In most cases, a sudden interruption of most medications has no major consequences. There are well-recognized therapies that, when withheld, can either lead to the reappearance of the symptoms they were controlling or to signs or symptoms of withdrawal. In this article, we present a table including medications that when interrupted can produce withdrawal syndromes, the signs and symptoms of the withdrawal syndrome, the time to onset and resolution of the syndrome, information regarding alternative delivery options for the drug/s when the oral route is not possible, as well as prevention and therapy.

Pitfalls In Quantitative Myocardial Pet Perfusion I: Myocardial Partial Volume Correction, K Lance Gould, Linh Bui, Danai Kitkungvan, Tinsu Pan, Amanda E Roby, Tung T Nguyen, Nils P Johnson

Faculty, Staff and Student Publications

BACKGROUND: PET quantitative myocardial perfusion requires correction for partial volume loss due to one-dimensional LV wall thickness smaller than scanner resolution.

METHODS: We aimed to assess accuracy of risk stratification for death, MI, or revascularization after PET using partial volume corrections derived from two-dimensional ACR and three-dimensional NEMA phantoms for 3987 diagnostic rest-stress perfusion PETs and 187 MACE events. NEMA, ACR, and Tree phantoms were imaged with Rb-82 or F-18 for size-dependent partial volume loss. Perfusion and Coronary Flow Capacity were recalculated using different ACR- and NEMA-derived partial volume corrections compared by Kolmogorov-Smirnov statistics to standard perfusion metrics with established …

Neurochemical Characterization Of Brainstem Pro-Opiomelanocortin Cells, Teodora Georgescu, David Lyons, Barbora Doslikova, Ana Paula Garcia, Oliver Marston, Luke K Burke, Raffaella Chianese, Brian Y H Lam, Giles S H Yeo, Justin J Rochford, Alastair S Garfield, Lora K Heisler

Faculty, Staff and Student Publications

Genetic research has revealed pro-opiomelanocortin (POMC) to be a fundamental regulator of energy balance and body weight in mammals. Within the brain, POMC is primarily expressed in the arcuate nucleus of the hypothalamus (ARC), while a smaller population exists in the brainstem nucleus of the solitary tract (POMCNTS). We performed a neurochemical characterization of this understudied population of POMC cells using transgenic mice expressing green fluorescent protein (eGFP) under the control of a POMC promoter/enhancer (PomceGFP). Expression of endogenous Pomc mRNA in the nucleus of the solitary tract (NTS) PomceGFP cells was confirmed using fluorescence-activating cell sorting (FACS) followed by …

Association Of Interleukin 10 Rs1800896 Polymorphism With Susceptibility To Breast Cancer: A Meta-Analysis., Ziyin Zhu, Ji-Bin Liu, Xi Liu, Linxue Qian

Department of Radiology Faculty Papers

Objective: To evaluate the correlation between interleukin 10 (IL-10) -1082A/G polymorphism (rs1800896) and breast cancers by performing a meta-analysis.

Methods: The Embase and Medline databases were searched through 1 September 2018 to identify qualified articles. Odds ratios (OR) and corresponding 95% confidence intervals (CIs) were applied to evaluate associations.

Results: In total, 14 case-control studies, including 5320 cases and 5727 controls, were analyzed. We detected significant associations between the IL10 -1082 G/G genotype and risk of breast cancer (AA + AG vs. GG: OR = 0.88, 95% CI = 0.80-0.97). Subgroup analyses confirmed a significant association in Caucasian populations (OR …

Impedance Analysis Of Tissues In Nspef Treatment For Cancer Therapy, Edwin Ayobami Oshin

Biomedical Engineering Theses & Dissertations

Nanosecond pulsed electric field (nsPEF) for cancer therapy is characterized by applications of high voltage pulses with low pulsed energy to induce non-thermal effects on tissues such as tumor ablation. It nonthermally treats tissues via electroporation. Electroporation is the increase in permeabilization of a cell membrane due to the application of high pulsed electric field. The objective of this study was to investigate the effect of nsPEF on tissue by monitoring the tissue’s impedance in real-time. Potato slices (both untreated and electroporated), and tumors extracted from female BALBc mice were studied. 100ns, 1-10kV pulses were applied to the tissues using …

Global Burden Of Respiratory Infections Associated With Seasonal Influenza In Children Under 5 Years In 2018: A Systematic Review And Modelling Study, Xin Wang, You Li, Katherine L. O'Brien, Qalab Abbas, Syed Asad Ali, Respiratory Virus Global Epidemiology Network, Mohammad Tahir Yousafzai, Zulfiqar Ahmed Bhutta, Sajid Bashir Soofi, Anita K. M. Zaidi

Department of Paediatrics and Child Health

Background: Seasonal influenza virus is a common cause of acute lower respiratory infection (ALRI) in young children. In 2008, we estimated that 20 million influenza-virus-associated ALRI and 1 million influenza-virus-associated severe ALRI occurred in children under 5 years globally. Despite this substantial burden, only a few low-income and middle-income countries have adopted routine influenza vaccination policies for children and, where present, these have achieved only low or unknown levels of vaccine uptake. Moreover, the influenza burden might have changed due to the emergence and circulation of influenza A/H1N1pdm09. We aimed to incorporate new data to update estimates of the global …

Story Of Lyari, Rabab Batool

Department of Paediatrics and Child Health

No abstract provided.

Paediatric Respiratory Isolation: A Challenge For A Secondary Care Hospital! A Service Innovation Project, Nadia Mohammad, Shireen Mohammad, Arjumand Sohaila, Syed Mohammad Yousuf, Adnan Khan, Rahila Meghani, Kashif Sajwani, Khalil Ahmad, Ali Faisal Saleem Dr, Pawan Vash

Department of Paediatrics and Child Health

Objective: The aim of this project was to broaden the secondary care hospital's scope of services and provide safe, effective and quality care for the patient presenting with measles.
Methods: Six Sigma DMAIC [define measure, analyze, improve, and control (DMAIC)] methodology was used in this quality improvement project. The quality project was started in October 2015 using a Gantt chart quality tool.
Results: The paediatric team with the support of administration of the hospital has established isolation rooms and devised a policy for the care and management of patient with airborne infection to avoid cross transmission. During six months period …

Tortuosity-Powered Microfluidic Device For Assessment Of Thrombosis And Antithrombotic Therapy In Whole Blood, David J Luna, Navaneeth K R Pandian, Tanmay Mathur, Justin Bui, Pranav Gadangi, Vadim V Kostousov, Shiu-Ki Rocky Hui, Jun Teruya, Abhishek Jain

Faculty, Staff and Students Publications

Accurate assessment of blood thrombosis and antithrombotic therapy is essential for the management of patients in a variety of clinical conditions, including surgery and on extracorporeal life support. However, current monitoring devices do not measure the effects of hemodynamic forces that contribute significantly to coagulation, platelet function and fibrin formation. This limits the extent to which current assays can predict clotting status in patients. Here, we demonstrate that a biomimetic microfluidic device consisting stenosed and tortuous arteriolar vessels would analyze blood clotting under flow, while requiring a small blood volume. When the device is connected to an inline pressure sensor …

Cofilin-1-Induced Actin Reorganization In Stored Platelets, Swapan K Dasgupta, Perumal Thiagarajan

Faculty, Staff and Students Publications

BACKGROUND: During platelet storage, there are extensive changes in cytoskeleton and phosphatidylserine exposure. The intrinsic mitochondrial pathway of apoptosis, activated in stored platelets, is a major mediator these changes. Cofilin-1 is an effector of actin reorganization. We examined the effect of cofilin-1 deficiency on cytoskeleton and phosphatidylserine exposure during storage and following activation of apoptosis.

METHODS AND RESULTS: We assessed actin filaments by Alexa-647-phalloidin and phosphatidylserine exposure by fluorescein isothiocyanate-lactadherin by fluorescence microscopy. In fresh platelets, actin filaments are distributed in the subcortical region, and they do not express phosphatidylserine in the outer surface. In stored platelets, there is retraction …

Comparison Of Surgical Versus Transcatheter Aortic Valve Replacement For Patients With Aortic Stenosis At Low-Intermediate Risk, Mahin R Khan, Waleed T Kayani, Malalai Manan, Ahmad Munir, Ihab Hamzeh, Salim S Virani, Yochai Birnbaum, Hani Jneid, Mahboob Alam

Faculty, Staff and Students Publications

BACKGROUND: To compare safety and efficacy of transcatheter aortic valve replacement (TAVR) with surgical aortic valve replacement (SAVR) in patients at low-intermediate risk, given the paucity of robust data.

METHODS: We performed an aggregate data meta-analysis of 7 randomized controlled trials (RCTs) and 6,778 patients comparing TAVR with SAVR for aortic stenosis (AS) in low-intermediate risk patients (Society of Thoracic Surgeons risk-score ≤8%) using the random-effects model. Primary outcome was all-cause mortality at 30-day, 1-year and 2-year of follow-up. Secondary outcomes included cardiac-mortality, stroke, acute kidney injury (AKI), atrial fibrillation (AF), permanent pacemaker (PPM) implantation, major-bleeding, moderate-severe paravalvular regurgitation (PVR) …

An In Vivo Genome-Wide Crispr Screen Identifies The Rna-Binding Protein Staufen2 As A Key Regulator Of Myeloid Leukemia, Jeevisha Bajaj, Michael Hamilton, Yutaka Shima, Kendall Chambers, Kyle Spinler, Eric L Van Nostrand, Brian A Yee, Steven M Blue, Michael Chen, David Rizzeri, Charles Chuah, Vivian G Oehler, H Elizabeth Broome, Roman Sasik, James Scott-Browne, Anjana Rao, Gene W Yeo, Tannishtha Reya

Faculty, Staff and Students Publications

Aggressive myeloid leukemias such as blast crisis chronic myeloid leukemia and acute myeloid leukemia remain highly lethal. Here we report a genome-wide in vivo CRISPR screen to identify new dependencies in this disease. Among these, RNA-binding proteins (RBPs) in general, and the double-stranded RBP Staufen2 (Stau2) in particular, emerged as critical regulators of myeloid leukemia. In a newly developed knockout mouse, loss of Stau2 led to a profound decrease in leukemia growth and improved survival in mouse models of the disease. Further, Stau2 was required for growth of primary human blast crisis chronic myeloid leukemia and acute myeloid leukemia. Finally, …

Defining A Taxonomy Of Intracranial Hypertension: Is Icp More Than Just A Number?, W Andrew Kofke, Swarna Rajagopalan, Diana Ayubcha, Ramani Balu, Jovany Cruz-Navarro, Panumart Manatpon, Elizabeth Mahanna-Gabrielli

Faculty, Staff and Students Publications

Intracranial pressure (ICP) monitoring and control is a cornerstone of neuroanesthesia and neurocritical care. However, because elevated ICP can be due to multiple pathophysiological processes, its interpretation is not straightforward. We propose a formal taxonomy of intracranial hypertension, which defines ICP elevations into 3 major pathophysiological subsets: increased cerebral blood volume, masses and edema, and hydrocephalus. (1) Increased cerebral blood volume increases ICP and arises secondary to arterial or venous hypervolemia. Arterial hypervolemia is produced by autoregulated or dysregulated vasodilation, both of which are importantly and disparately affected by systemic blood pressure. Dysregulated vasodilation tends to be worsened by arterial …

Provider Attitudes And Practice Patterns For Direct-Acting Antiviral Therapy For Patients With Hepatocellular Carcinoma, Nicole E Rich, Ju Dong Yang, Ponni V Perumalswami, Naim Alkhouri, Whitney Jackson, Neehar D Parikh, Neil Mehta, Reena Salgia, Andres Duarte-Rojo, Laura Kulik, Mina Rakoski, Adnan Said, Omobonike Oloruntoba, George N Ioannou, Maarouf A Hoteit, Andrew M Moon, Amol S Rangnekar, Sheila L Eswaran, Elizabeth Zheng, Janice H Jou, James Hanje, Anjana Pillai, Ruben Hernaez, Robert Wong, Steven Scaglione, Hrishikesh Samant, Devika Kapuria, Shaun Chandna, Russell Rosenblatt, Veeral Ajmera, Catherine T Frenette, Sanjaya K Satapathy, Parvez Mantry, Prasun Jalal, Binu V John, Oren K Fix, Michael Leise, Christina C Lindenmeyer, Avegail Flores, Nayan Patel, Z Gordon Jiang, Nyan Latt, Renumathy Dhanasekaran, Mobolaji Odewole, Sofia Kagan, Jorge A Marrero, Amit G Singal

Faculty, Staff and Students Publications

BACKGROUND & AIMS: Direct-acting antivirals (DAAs) are effective against hepatitis C virus and sustained virologic response is associated with reduced incidence of hepatocellular carcinoma (HCC). However, there is controversy over the use of DAAs in patients with active or treated HCC and uncertainty about optimal management of these patients. We aimed to characterize attitudes and practice patterns of hepatology practitioners in the United States regarding the use of DAAs in patients with HCC.

METHODS: We conducted a survey of hepatology providers at 47 tertiary care centers in 25 states. Surveys were sent to 476 providers and we received 279 responses …

27 Å Cryo-Em Structure Of Rotavirus Core Protein Vp3, A Unique Capping Machine With A Helicase Activity, Dilip Kumar, Xinzhe Yu, Sue E Crawford, Rodolfo Moreno, Joanita Jakana, Banumathi Sankaran, Ramakrishnan Anish, Soni Kaundal, Liya Hu, Mary K Estes, Zhao Wang, B V Venkataram Prasad

Faculty, Staff and Students Publications

In many viruses, including rotavirus (RV), the major pathogen of infantile gastroenteritis, capping of viral messenger RNAs is a pivotal step for efficient translation of the viral genome. In RV, VP3 caps the nascent transcripts synthesized from the genomic dsRNA segments by the RV polymerase VP1 within the particle core. Here, from cryo-electron microscopy, x-ray crystallography, and biochemical analyses, we show that VP3 forms a stable tetrameric assembly with each subunit having a modular domain organization, which uniquely integrates five distinct enzymatic steps required for capping the transcripts. In addition to the previously known guanylyl- and methyltransferase activities, we show …

Exploring An Instrumented Balance Assessment In Athletes With Acute Mild Traumatic Brain Injury Compared To Healthy Athletes And Non-Athletes, Bryana Popa

University Honors Theses

Balance deficits are common following mild Traumatic Brain Injury (mTBI) and can persist beyond the standard recovery period. Advances in wearable technologies, such as inertial measurement units (IMUs), have increased utilization of instrumented balance assessments. There are limited studies providing normative ranges for the Balance Error Scoring System (mBESS) to characterize abnormalities in people with mTBI. This thesis provides balance ranges for athletes with acute mTBI and normative control populations completing the mBESS. Testing occurred at the university athletic facility or the Balance Disorders Laboratory at Oregon Health & Science University (OHSU) and the Veterans Affairs Portland Health Care System …

Ultra-Low-Dose Estrogen Therapy For Female Hypogonadism., Yukihiro Hasegawa, Tomoyo Itonaga, Kento Ikegawa, Satsuki Nishigaki, Masanobu Kawai, Eri Koga, Hideya Sakakibara, Judith L Ross

Department of Pediatrics Faculty Papers

In females, endogenous estrogen secretion increases gradually before pubertal development. The benefits of low-dose estrogen therapy in patients with Turner syndrome were originally discussed by Ross et al. and Quigley et al. These seminal studies used ethinyl estradiol (EE2), starting at a dose of 25 ng/kg/d. We hypothesized that the initial dosage of estrogen could be titrated to more closely mimic physiological increments of endogenous estrogen. Therefore, our recent study initiated EE2 treatment at a dosage of 1-2 ng/kg/d, an ultra-low-dose estrogen therapy in pediatric patients with Turner syndrome. The ultra-low-dose estrogen therapy in this syndrome produced a good …

Protection Against Ionizing Radiation And Chemotherapy Toxicity Via Latexin Regulation, Gary Van Zant, Ying Liang, Yi Liu

Internal Medicine Faculty Patents

The present invention relates to methods for protecting against damage caused by radiation and/or chemotherapy, and methods for treating bone marrow damage by reducing/ inhibiting Latexin expression and/or Latexin activity. The methods comprise administering to a subject in need thereof a pharmaceutical composition comprising an antagonist that reduces expression and/or activity of latexin, wherein latexin is a latexin polynucleotide variant and/or a latexin polypeptide variant that binds to the antagonist.

Health Screenings Administered During The Domestic Medical Examination Of Refugees And Other Eligible Immigrants In Nine Us States, 2014-2016: A Cross-Sectional Analysis., Clelia Pezzi, Deborah Lee, Gayathri S. Kumar, Breanna Kawasaki, Lori Kennedy, Jenny Aguirre, Melissa Titus, Rebecca Ford, Blain Mamo, Kailey Urban, Stephen Hughes, Colleen Payton, Kevin Scott, Jessica Montour, Emily S. Jentes

Department of Family & Community Medicine Faculty Papers

BACKGROUND: Refugees and other select visa holders are recommended to receive a domestic medical examination within 90 days after arrival to the United States. Limited data have been published on the coverage of screenings offered during this examination across multiple resettlement states, preventing evaluation of this voluntary program's potential impact on postarrival refugee health. This analysis sought to calculate and compare screening proportions among refugees and other eligible populations to assess the domestic medical examination's impact on screening coverage resulting from this examination.

METHODS AND FINDINGS: We conducted a cross-sectional analysis to summarize and compare domestic medical examination data from …

Hepatitis B Virus Hbx Protein Mediates The Degradation Of Host Restriction Factors Through The Cullin 4 Ddb1 E3 Ubiquitin Ligase Complex, Marissa M Minor, F Blaine Hollinger, Adrienne L Mcnees, Sung Yun Jung, Antrix Jain, Joseph M Hyser, Karl-Dimiter Bissig, Betty L Slagle

Faculty, Staff and Students Publications

The hepatitis B virus (HBV) regulatory HBx protein is required for infection, and its binding to cellular damaged DNA binding protein 1 (DDB1) is critical for this function. DDB1 is an adaptor protein for the cullin 4A Really Interesting New Gene (RING) E3 ubiquitin ligase (CRL4) complex and functions by binding cellular DDB1 cullin associated factor (DCAF) receptor proteins that recruit substrates for ubiquitination and degradation. We compared the proteins found in the CRL4 complex immunoprecipitated from uninfected versus HBV-infected hepatocytes from human liver chimeric mice for insight into mechanisms by which HBV and the cell interact within the CRL4 …

Patient And Physician Predictors Of Ffr/Ifr Utilization In Acs And Sihd, Payal Kohli, Peiqi Wang, Andrew Wang, Lucy Liu, Ali Weinstein, Jeptha P. Curtis, John A. Spertus, Jonathan P. Piccini, Marty Makary, Tyler J Gluckman

Articles, Abstracts, and Reports

Background

Despite guidelines supporting FFR/iFR to guide PCI, these modalities remain underutilized. We sought to characterize factors associated with FFR/iFR use in patients undergoing index PCI for an acute coronary syndrome (ACS) or stable ischemic heart disease (SIHD).

Methods

ICD-9/10 codes were used to identify patients undergoing PCI and receiving FFR/iFR for an ACS (n=1,042,896) or SIHD (n=255,213) in a Medicare claims database from Jan. 1, 2013-June 30, 2018. Patients with functional/anatomical testing were excluded (5d prior in ACS; 60d prior in SIHD). Individuals with FFR/iFR performed 1-60 days prior to PCI were also excluded to limit analysis to non-staged …

The Frequency Of Left Atrial Thrombus On Transthoracic Echocardiogram In Patients With Mitral Stenosis, Khalil Ahmed, Aziz Rehman Memon, Hussain Liaquat Sr, Mustajab Mujtaba, Chander Parkash, Fateh Ali Tipoo Sultan, Musa Karim

Section of Cardiology

Background: Patients with mitral stenosis (MS) are more prone to develop left atrial (LA) thrombus. This cross-sectional study was conducted to determine the frequency of LA thrombus on transthoracic echocardiography (TTE) in patients with MS.
Methods: In this study, we included patients diagnosed with MS undergoing TTE at the echocardiography department of the National Institute of Cardiovascular Disease (NICVD), Karachi, Pakistan. The severity of MS was classified based on the mitral valve area (MVA) as follows: very severe: MVA of ≤1.0 cm²; severe: MVA of ≤1.5 cm²; and mild to moderate: MVA of >1.5 cm^{2 …}