Medicine and Health Sciences Commons^™

Tmsb4y Is A Candidate Tumor Suppressor On The Y Chromosome And Is Deleted In Male Breast Cancer., Hong Yuen Wong, Grace M Wang, Sarah Croessmann, Daniel J Zabransky, Anita Aggarwal, Min-Ling Liu, + 10 More

Pathology Faculty Publications

Male breast cancer comprises less than 1% of breast cancer diagnoses. Although estrogen exposure has been causally linked to the development of female breast cancers, the etiology of male breast cancer is unclear. Here, we show via fluorescence in situ hybridization (FISH) and droplet digital PCR (ddPCR) that the Y chromosome was clonally lost at a frequency of ~16% (5/31) in two independent cohorts of male breast cancer patients. We also show somatic loss of the Y chromosome gene TMSB4Y in a male breast tumor, confirming prior reports of loss at this locus in male breast cancers. To further understand …

Are Immune Modulating Single Nucleotide Polymorphisms Associated With Necrotizing Enterocolitis?, Ashanti L Franklin, Mariam Said, Clint D Cappiello, Heather Gordish-Dressman, Zohreh Tatari-Calderone, Stanislav Vukmanovic, Khodayar Rais-Bahrami, Naomi L C Luban, Joseph M Devaney, Anthony D Sandler

Genomics and Precision Medicine Faculty Publications

Necrotizing enterocolitis (NEC) is a devastating gastrointestinal emergency. The purpose of this study is to determine if functional single nucleotide polymorphisms (SNPs) in immune-modulating genes pre-dispose infants to NEC. After Institutional Review Board approval and parental consent, buccal swabs were collected for DNA extraction. TaqMan allelic discrimination assays and BglII endonuclease digestion were used to genotype specific inflammatory cytokines and TRIM21. Statistical analysis was completed using logistic regression. 184 neonates were analyzed in the study. Caucasian neonates with IL-6 (rs1800795) were over 6 times more likely to have NEC (p = 0.013; OR = 6.61, 95% CI 1.48-29.39), and over …

Puerto Rico’S Community Health Centers In A Time Of Crisis, Peter Shin, Jessica Sharac, Marie Nina Luis, Sara J. Rosenbaum

Geiger Gibson/RCHN Community Health Foundation Research Collaborative

In 2014, Puerto Rico’s twenty federally funded community health centers, operating in 71 sites located throughout the Commonwealth, served 330,736 patients, approximately one in ten Commonwealth residents. Compared to other Puerto Rico residents, health center patients are less likely to be insured. Despite considerable growth in Medicaid as a result of the supplemental funding provided under the Affordable Care Act, in 2014, 12.2% of health center patients remained uninsured.

Compared to health centers outside Puerto Rico, Puerto Rico’s health centers show a greater proportion of Medicaid patients served (69% compared to 46% outside Puerto Rico), a greater dependence on physician …

Accept Medical Student Handoff Workshop: The Patient Safety Curriculum Starts In Undergraduate Medical Education, Juan Reyes, Larrie Greenberg, Linda Lesky

E-Learning Modules

This workshop is an educational intervention designed to improve student skills in patient handoffs. It consists of a one-hour, interactive, small-group session facilitated by a faculty member. The workshop focuses on the importance of specific handoff skills to patient safety and is centered around the principles embodied in the ACCEPT mnemonic: Accurate, Complete (but concise), Clear, Efficient, Presented in writing, and Told in person. Students are provided with a standardized format for both an oral and written handoff along with a pocket card highlighting the required elements. A standardized patient case allows for participants to practice these skills, receive feedback, …

Genetic Modification Of Human Mesenchymal Stem Cells Helps To Reduce Adiposity And Improve Glucose Tolerance In An Obese Diabetic Mouse Model., Sabyasachi Sen, Cleyton C Domingues, Carol Rouphael, Cyril Chou, Chul Kim, Nagendra Yadava

Medicine Faculty Publications

INTRODUCTION: Human mesenchymal stem cells (MSCs) are multipotent cells that can differentiate into fat, muscle, bone and cartilage cells. Exposure of subcutaneous abdominal adipose tissue derived AD-MSCs to high glucose (HG) leads to superoxide accumulation and up-regulation of inflammatory molecules. Our aim was to inquire how HG exposure affects MSCs differentiation and whether the mechanism is reversible.

METHODS: We exposed human adipose tissue derived MSCs to HG (25 mM) and compared it to normal glucose (NG, 5.5 mM) exposed cells at 7, 10 and 14 days. We examined mitochondrial superoxide accumulation (Mitosox-Red), cellular oxygen consumption rate (OCR, Seahorse) and gene …

Bridging The Divide White Paper On Medication Abortion: Overview Of Research & Policy In The United States, Liz Borkowski, Julia Strasser, Amy Allina, Susan Wood

Jacobs Institute of Women's Health

Medication abortion (also called medical abortion) is a safe method of abortion available for the past 15 years in the US. The Bridging the Divide white paper summarizes the scientific evidence related to the current medication abortion process and potential changes to the process that could make it even safer and more accessible for patients, as well as policy considerations and directions for future research.

In the fall of 2000, the US Food & Drug Administration (FDA) approved the drug Mifeprex© (generic: mifepristone) for use in medication abortions. That approval included requirements that affect both patients and providers and that …

Clinical Support Personnel In The U.S. Hospitals: Job Trends From 2010-2014, Patricia Pittman, Suhui Li, Xinxin Han

Health Workforce Research Center Publications

The use of various forms of Clinical Support Personnel (CSP), who perform healthcare tasks under the supervision of registered nurses and other licensed healthcare providers has been used as a primary strategy for managing professional shortages (Huston, 1996; Zimmerman, 2000), while at the same time reducing costs (Orne, Garland, O’Hara, Perfetto, & Stielau, 1998; Keenan, 2003). The purpose of this analysis is to better understand how hospitals are using CSP, and to explore changes that may have occurred since the 2010 passage of the Affordable Care Act. We use the term CSP to refer to a portion of the allied …

High Incidence Of Fracture Events In Patients With Long-Gap Esophageal Atresia (Lgea): A Retrospective Review Prompting Implementation Of Standardized Protocol., Sigrid Bairdain, Brenda Dodson, David Zurakowski, Lawrence Rhein, Brian D Snyder, Melissa Putman, Russell W Jennings

Surgery Faculty Publications

PURPOSE: To identify factors associated with an increased risk of fractures in Long-Gap Esophageal Atresia (LGEA) patients. Following implementation of a risk-stratified program, we hypothesized a reduction in fracture incidence within this potentially high-risk population.

METHODS: A retrospective review of LGEA-patients admitted between 2005 and 2014 was conducted. Symptomatic fractures with radiographic confirmation were defined as events. Univariate and multivariable analysis evaluated factors including admission weight-for-age z-score, primary versus secondary Foker process (FP), weight at Foker Stage I, days and episodes of paralysis, number of parenteral nutrition (PN) days, cumulative dose of loop diuretics adjusted for body weight and days …

Viability Of Developmental Stages Of Schistosoma Mansoni Quantified With Xcelligence Worm Real-Time Motility Assay (Xworm)., Gabriel Rinaldi, Alex Loukas, Paul J. Brindley, Jeff T. Irelan, Michael J. Smout

Microbiology, Immunology, and Tropical Medicine Faculty Publications

Infection with helminth parasites causes morbidity and mortality in billions of people and livestock worldwide. Where anthelmintic drugs are available, drug resistance is a major problem in livestock parasites, and a looming threat to public health. Monitoring the efficacy of these medicines and screening for new drugs has been hindered by the lack of objective, high-throughput approaches. Several cell monitoring technologies have been adapted for parasitic worms, including video-, fluorescence-, metabolism enzyme- and impedance-based tools that minimize the screening bottleneck. Using the xCELLigence impedance-based system we previously developed a motility-viability assay that is applicable for a range of helminth parasites. …

Levels Of Glycosaminoglycans In The Cerebrospinal Fluid Of Healthy Young Adults, Surrogate-Normal Children, And Hunter Syndrome Patients With And Without Cognitive Impairment., Christian J Hendriksz, Joseph Muenzer, Adeline Vanderver, Jonathan M Davis, Barbara K Burton, Nancy J Mendelsohn, Nan Wang, Luying Pan, Arian Pano, Ann J Barbier

Neurology Faculty Publications

In mucopolysaccharidoses (MPS), glycosaminoglycans (GAG) accumulate in tissues. In MPS II, approximately two-thirds of patients are cognitively impaired. We investigated levels of GAG in cerebrospinal fluid (CSF) in different populations from four clinical studies (including NCT00920647 and NCT01449240). Data indicate that MPS II patients with cognitive impairment have elevated levels of CSF GAG, whereas those with the attenuated phenotype typically have levels falling between those of the cognitively affected patients and healthy controls.

Health Center Trends: Recent Experience In Medicaid Expansion And Non-Expansion States., Peter Shin, Jessica Sharac, Julia Zur, Sara J. Rosenbaum, Julia Paradise

Geiger Gibson/RCHN Community Health Foundation Research Collaborative

In thousands of medically underserved communities across the U.S., community health centers enroll lowincome people in health coverage and provide care to millions of patients. Against the backdrop of significant health center expansion over several years and a full year of expanded health coverage under the Affordable Care Act (ACA), this brief examines change between 2013 and 2014 in the volume and health coverage profile of health center patients, and health center enrollment activities and service capacity, comparing states that implemented the ACA Medicaid expansion in 2014 and states that did not expand Medicaid in 2014. The study is based …

Functional Analysis Of The Unique Cytochrome P450 Of The Liver Fluke Opisthorchis Felineus., Mariya Y. Pakharukova, Valentin A. Vavilin, Banchob Sripa, Thewarach Laha, Paul J. Brindley, Viatcheslav A. Mordvinov

Microbiology, Immunology, and Tropical Medicine Faculty Publications

The basic metabolic cytochrome P450 (CYP) system is essential for biotransformation of sterols and xenobiotics including drugs, for synthesis and degradation of signaling molecules in all living organisms. Most eukaryotes including free-living flatworms have numerous paralogues of the CYP gene encoding heme monooxygenases with specific substrate range. Notably, by contrast, the parasitic flatworms have only one CYP gene. The role of this enzyme in the physiology and biochemistry of helminths is not known. The flukes and tapeworms are the etiologic agents of major neglected tropical diseases of humanity. Three helminth infections (Opisthorchis viverrini, Clonorchis sinensis and Schistosoma haematobium) are considered …

Himmelfarb Library Liaison Letter - December 2015, George Washington University, Himmelfarb Health Sciences Library

Himmelfarb Library Liaison Letters

No abstract provided.

Quality And Cost Of Diabetes Mellitus Care In Community Health Centers In The United States., Patrick Richard, Peter Shin, Tishra Beeson, Laura S. Burke, Susan F. Wood, Sara Rosenbaum

Health Policy and Management Faculty Publications

OBJECTIVE: To examine variations in the quality and cost of care provided to patients with diabetes mellitus by Community Health Centers (CHCs) compared to other primary care settings.

RESEARCH DESIGN AND METHODS: We used data from the 2005-2008 Medical Expenditure Panel Survey (N = 2,108). We used two dependent variables: quality of care and ambulatory care expenditures. Our primary independent variable was whether the respondent received care in a Community Health Centers (CHCs) or not. We estimated logistic regression models to determine the probability of quality of care, and used generalized linear models with log link and gamma distribution to …

Leisure-Time Physical Activity, Falls, And Fall Injuries In Middle-Aged Adults., Alberto J. Caban-Martinez, Theodore K. Courtney, Wen-Ruey Chang, David A. Lombardi, Melissa J. Perry, Jeffrey N. Katz, David C. Christiani, Santosh K. Verma

Environmental and Occupational Health Faculty Publications

Introduction

Although exercise and strength training have been shown to be protective against falls in older adults (aged 65 years and older), evidence for the role of leisure-time physical activity (LTPA) in the prevention of falls and resulting injuries in middle-aged adults (aged 45–64 years) is lacking. In the present study, we investigate the association between self-reported engagement in LTPA and the frequency of falls and fall-related injuries among middle-aged and older adults, while controlling for key sociodemographic and health characteristics.

Methods

Nationally representative data from the 2010 U.S. Behavioral Risk Factor Surveillance Survey were analyzed in April 2014 to …

Prospective Testing And Redesign Of A Temporal Biomarker Based Risk Model For Patients With Septic Shock: Implications For Septic Shock Biology, Hector R. Wong, Natalie R. Cvijanovich, Nick Anas, Geoffrey L. Allen, Neal J. Thomas, Robert J. Freishtat, +17 Additional Authors

Pediatrics Faculty Publications

The temporal version of the pediatric sepsis biomarker risk model (tPERSEVERE) estimates the risk of a complicated course in children with septic shock based on biomarker changes from days 1 to 3 of septic shock. We validated tPERSEVERE performance in a prospective cohort, with an a priori plan to redesign tPERSEVERE if it did not perform well. Biomarkers were measured in the validation cohort (n = 168) and study subjects were classified according to tPERSEVERE. To redesign tPERSEVERE, the validation cohort and the original derivation cohort (n = 299) were combined and randomly allocated to training (n = 374) and …

Effect Of Kidney Function On Drug Kinetics And Dosing In Neonates, Infants, And Children., Frederique Rodieux, Melanie Wilbaux, Johannes N. Van Den Anker, Marc Pfister

Pediatrics Faculty Publications

Neonates, infants, and children differ from adults in many aspects, not just in age, weight, and body composition. Growth, maturation and environmental factors affect drug kinetics, response and dosing in pediatric patients. Almost 80 % of drugs have not been studied in children, and dosing of these drugs is derived from adult doses by adjusting for body weight/size. As developmental and maturational changes are complex processes, such simplified methods may result in subtherapeutic effects or adverse events. Kidney function is impaired during the first 2 years of life as a result of normal growth and development. Reduced kidney function during …

Overweight Predicts Poorer Exercise Capacity In Congenital Heart Disease Patients, Karen Kuehl, Alicia Tucker, Munziba Khan, Paula Goldberg, E. Anne Greene, Megan Smith

Pediatrics Faculty Publications

Background

Overweight (OW) and obesity (OB) are endemic in the United States and affect adolescents and adults with congenital heart disease (ACHD). Defining the burden of excess weight on the cardiovascular system in ACHD is the goal of this study. Limitation of exercise capacity due to overweight or obesity might be reversible with weight loss and improve quality of life for ACHD adults.

Methods

Exercise tests performed using a Bruce protocol and measurement of maximum oxygen consumption were retrospectively reviewed on 418 CHD patients. OW and OB were defined as the 85–95 or > 95 percentile respectively for age and gender …

Effect Of Kidney Function On Drug Kinetics And Dosing In Neonates, Infants, And Children., Frederique Rodieux, Melanie Wilbaux, Johannes N. Van Den Anker, Marc Pfister

Pediatrics Faculty Publications

Neonates, infants, and children differ from adults in many aspects, not just in age, weight, and body composition. Growth, maturation and environmental factors affect drug kinetics, response and dosing in pediatric patients. Almost 80% of drugs have not been studied in children, and dosing of these drugs is derived from adult doses by adjusting for body weight/size. As developmental and maturational changes are complex processes, such simplified methods may result in subtherapeutic effects or adverse events. Kidney function is impaired during the first 2 years of life as a result of normal growth and development. Reduced kidney function during childhood …

Using A New Evidence-Based Health Workforce Innovation Research Framework To Compare Innovations In Community Health Center And Other Ambulatory Care Settings, Leah E. Masselink, Patricia Pittman, Claire Houterman

Health Workforce Research Center Publications

In the United States, changing demographics, rising costs, and the impact of new regulations and payment models arising from the Affordable Care Act have placed unprecedented pressures on healthcare providers to increase access to care, improve quality and to control costs. To meet these challenges, some providers are forming accountable care organizations (ACOs) while others are pursuing medical homes or other novel payment and care delivery models designed to help meet these challenges. Within established organizations such as federally funded community health centers (CHCs), healthcare leaders are exercising significant latitude in developing innovative solutions for meeting their patients’ needs more …

Medicare Part B Premiums And Social Security Benefits, Sally Coberly

National Health Policy Forum

This paper describes the annual determination of beneficiaries' premiums for voluntary Medicare Part B coverage and a provision known as "hold harmless." The hold-harmless provision prevents a beneficiary's Social Security payments from being reduced as a result of an increase in the Part B premium. Because there was no cost-of-living increase for Social Security benefits for 2016, the hold-harmless provision will be in effect. This paper discusses what happens to premiums in 2016 for beneficiaries who are not held harmless—new beneficiaries, beneficiaries who do not participate in Social Security, those who are dually eligible for Medicare and Medicaid, and higher-income …

Endothelin-B Receptor Activation In Astrocytes Regulates The Rate Of Oligodendrocyte Regeneration During Remyelination., Timothy R. Hammond, Brian Mcellin, Paul D Morton, Matthew Raymond, Jeff Dupree, Vittorio Gallo

Medicine Faculty Publications

Reactive astrogliosis is an essential and ubiquitous response to CNS injury, but in some cases, aberrant activation of astrocytes and their release of inhibitory signaling molecules can impair endogenous neural repair processes. Our lab previously identified a secreted intercellular signaling molecule, called endothelin-1 (ET-1), which is expressed at high levels by reactive astrocytes in multiple sclerosis (MS) lesions and limits repair by delaying oligodendrocyte progenitor cell (OPC) maturation. However, as ET receptors are widely expressed on neural cells, the cell- and receptor-specific mechanisms of OPC inhibition by ET-1 action remain undefined. Using pharmacological approaches and cell-specific endothelin receptor (EDNR) ablation, …

Pediatric Neuroradiology Pre-Call Primer, Trevor Morrison, Gilbert Vezina, Nadja Kadom

E-Learning Modules

Pediatric neuroimaging can provide a challenge to radiology residents during call due to the fact that it is infrequently encountered in many institutions. The goal of this teaching tool is to provide radiology residents with background knowledge in pediatric brain anatomy and pathology in preparation for taking call. There is one teaching tool and one assessment tool with answers, all three of which are in PowerPoint format. Emergency neuroradiology topics discussed in this module are sutures, skull fractures, bleeds, sulci and mass effect, cisterns, and herniations. After implementing this teaching tool at our institution with all incoming residents and fellows, …

Meaningful Use Of Health Information Technology: Proving Its Worth?, Lisa Sprague

National Health Policy Forum

Health policymakers in recent years have looked to the implementation of health information technology (IT)—electronic health records and the like—as a means to improve quality, reduce costs, and achieve better health outcomes across populations. But implementing health IT in a meaningful way must go beyond purchasing medical records software. The U.S. Department of Health and Human Services (HHS) devised a set of measures and incentives for hospitals and eligible medical professionals within Medicare or Medicaid to mark successive stages of effective IT implementation. This issue brief discusses the history of meaningful use, the measures used to evaluate effectiveness, and the …

Effect Of Genetic Background On The Dystrophic Phenotype In Mdx Mice., William D Coley, Laurent Bogdanik, Maria Candida Vila, Qing Yu, Terence A Partridge, Kanneboyina Nagaraju, +12 Additional Authors

Genomics and Precision Medicine Faculty Publications

Genetic background significantly affects phenotype in multiple mouse models of human diseases, including muscular dystrophy. This phenotypic variability is partly attributed to genetic modifiers that regulate the disease process. Studies have demonstrated that introduction of the γ-sarcoglycan null allele onto the DBA/2J background confers a more severe muscular dystrophy phenotype than the original strain, demonstrating the presence of genetic modifier loci in the DBA/2J background. To characterize the phenotype of dystrophin deficiency on the DBA/2J background, we created and phenotyped DBA/2J-congenic Dmdmdx mice (D2-mdx) and compared them to the original, C57BL/10ScSn-Dmdmdx (B10-mdx) model. These strains were compared to their respective …

Workforce Planning & Development In Times Of Delivery System Transformation: The Stories Of Kaiser Permanente And Montefiore Health System, Patricia Pittman, Ellen Scully-Russ

Health Workforce Research Center Publications

As the implementation of the Affordable Care Act (ACA) advances, many health systems are taking bold measures to reorganize how they deliver care, and finding that in order to do so; they need to make major changes in how their healthcare workforces are organized.

Understanding what workforce changes are occurring and how they are being managed is important not just for healthcare leaders, but for policymakers as well. Traditional methods of projecting provider shortages and justifying the allocation of public funding to expand various professional pipelines are giving way to the notion that there are many models of care delivery …

Engaging Older Adults To Build Social Capital, Beverly K. Lunsford, Danielle Janes

Nursing Faculty Publications

Countries are considering the healthcare implications as the proportion of older adults increases, including rising healthcare costs and resources needed as more adults want to "age in place" or continue living in the community. More in home resources and support services will be needed for older adults to continue living independently at homes. Older adults are an incredibly untapped resource with a continuing need to contribute to society and a willingness to help others. Older adults are working longer than ever before, so they have the potential to build their own social capital for meeting the needs of aging colleagues. …

Carcinogenic Liver Fluke Secretes Extracellular Vesicles That Promote Cholangiocytes To Adopt A Tumorigenic Phenotype, Sujittra Chaidayet, Javier Sotillo, Michael Smout, Cinzia Cantacessi, Malcolm Jones, Paul J. Brindley, Jeffrey M. Bethony, +9 Additional Authors

Microbiology, Immunology, and Tropical Medicine Faculty Publications

Background. Throughout Asia there is an unprecedented link between cholangiocarcinoma and infection with the liver fluke Opisthorchis viverrini. Multiple processes including chronic inflammation and secretion of parasite proteins into the biliary epithelium drive infection towards cancer. Until now, the mechanism and effects of parasite protein entry into cholangiocytes was unknown.

Methods. Various microscopy techniques were used to identify O. viverrini extracellular vesicles (EVs) and their internalization by human cholangiocytes. Using mass spectrometry we characterised the EV proteome and associated changes in cholangiocytes after EV uptake, and detected EV proteins in bile of infected hamsters and humans. Cholangiocyte proliferation and …

Evaluation Of Cytosine Dna Methylation Of The Biomphalaria Glabratahe At Shock Protein 70 Locus After Biological And Physiological Stresses, Wannaporn Ittiprasert, Andre Miller, Matty Knight, Matt Tucker, Michael H. Hsieh

Microbiology, Immunology, and Tropical Medicine Faculty Publications

Deoxyribonucleic (DNA) methylation is one of the widespread epigenetic modifications of genomic DNA, and has been postulated to be a predisposing influence on disease onset and infections. The ability to quantify differences in DNA methylation between the genomes of normal vs.stressed Biomphalaria glabrata would help to profile changes potentially linked to resistance to Schistosoma mansoni infection. Thus, this study sought to measure differences in cytosine DNA methylation of various B. glabrata tissues responding over time to either biological or physiological stresses (S. mansoni exposure vs. heat shock). Here, this study measured DNA methylation at the B. glabrataheat …

Patient Satisfaction Of Surgical Treatment Of Clitoral Phimosis And Labial Adhesions Caused By Lichen Sclerosus, Anne N. Flynn, Michelle King, Mollie Rieff, Jill A. Krapf, Andrew T. Goldstein

Obstetrics and Gynecology Faculty Publications

Introduction

Lichen sclerosus (LS) is a chronic inflammatory dermatosis, usually affecting the anogenital skin in women. This chronic inflammation can cause scarring of genitalia including narrowing of the introitus and phimosis of the clitoris. These architectural changes can lead to recurrent tearing during intercourse (vulvar granuloma fissuratum) and decreased clitoral sensation. Surgical correction of vulvar granuloma fissuratum (VGF) and clitoral phimosis can be performed, but there is little data on the patient satisfaction and complications following these surgical procedures.

Aim

To evaluate patient experience and outcomes in women undergoing surgical correction of scarring caused by anogenital LS.

Methods

A retrospective …