Diseases Commons^™

Racial And Ethnic Health Disparities In Incarcerated Populations, Meghan E. Borysova, Ojmarrh Mitchell, Dawood H. Sultan, Arthur R. Williams

Journal of Health Disparities Research and Practice

Alarming disparities in population health and wellness in the United States have led to multi-disciplinary research efforts to create health equity. Identifying disparities, elucidating the etiological bases of disparities, and implementing solutions to eliminate disparities are part of the U.S. national health agenda. Racial and ethnic disparities have been identified throughout the cancer control continuum, in cardiovascular disease, diabetes and a multitude of other conditions. The causes of disparities are complex, condition specific, and conjectured to result from combinations of biological and socio-behavioral factors. Racial and ethnic health disparities within the vast incarcerated communities have been excluded from most studies, …

Influence Of Obesity, Race And Gender On Cardiac Catheterization After Stress Testing, Robert Finkelhor

Journal of Health Disparities Research and Practice

Female gender and black race have been associated with lower use of cardiac resources however; these patients also have a higher prevalence of obesity. Therefore we determined their relation to cardiac catheterization after stress testing. Clinical characteristics were determined for all patients stress tested over one year at a safety-net, urban, teaching hospital. Subsequent cardiac catheterizations were identified. Univariate and multivariate analyses were performed to determine the factors associated with catheterization. 3644 patients underwent stress testing and 484 (13%) underwent cardiac catheterization. The population was 58% female, 33% black, 53% were obese and 32% lacked insurance. Obese patients were mostly …

Gastrointestinal Cell Mediated Immunity And The Microsporidia, Magali M. Moretto, Imtiaz A. Khan, Louis M. Weiss

Microbiology, Immunology, and Tropical Medicine Faculty Publications

No abstract provided.

Germline Transgenesis And Insertional Mutagenesis In Schistosoma Mansoni Mediated By Murine Leukemia Virus, Gabriel Rinaldi, Sabine E. Eckert, Isheng J. Tsai, Suttas Suttiprapa, Kristine J. Kines, Jose F. Tort, Victoria H. Mann, Daniel J. Turner, Matthew Berriman, Paul J. Brindley

Microbiology, Immunology, and Tropical Medicine Faculty Publications

Functional studies will facilitate characterization of role and essentiality of newly available genome sequences of the human schistosomes, Schistosoma mansoni, S. japonicum and S. haematobium. To develop transgenesis as a functional approach for these pathogens, we previously demonstrated that pseudotyped murine leukemia virus (MLV) can transduce schistosomes leading to chromosomal integration of reporter transgenes and short hairpin RNA cassettes. Here we investigated vertical transmission of transgenes through the developmental cycle of S. mansoni after introducing transgenes into eggs. Although MLV infection of schistosome eggs from mouse livers was efficient in terms of snail infectivity, >10-fold higher transgene copy …

Feasibility And Compliance With Daily Home Ecg Monitoring Of The Qt Interval In Heart Transplant Recipients, Erik V. Carter, Kathleen T. Hickey, David M. Pickham, Lynn V. Doering, Belinda Chen, Patricia Harris, Barbara J. Drew

Collected Faculty Scholarship

Background: Recent evidence suggests that acute allograft rejection after heart transplantation causes an increased QT interval on electrocardiogram (ECG). The aims of this pilot study were to (1) determine whether heart transplant recipients could achieve compliance in transmitting a 30-second ECG every day for 1 month using a simple ECG device and their home telephone, (2) evaluate the ease of device use and acceptability by transplant recipients, and (3) evaluate the quality of transmitted ECG tracings for QT-interval measurement.

Methods: A convenience sample of adult heart transplant recipients were recruited and trained to use the device (HeartOne, Aerotel Medical Systems, …

Hypoxia-Sensitive Gene Expression In The Gastrocnemius Muscle Following Chronic Hind Limb Ischemia, Andrew Tilton

Biological Sciences

Chronic ischemia, caused by the formation atherosclerotic plaque occlusions in major conduit arteries, is the leading cause of morbidity and mortality in western societies. Vascular remodeling can help compensate for the adverse effects of atherosclerotic plaque formation. Vascular remodeling relies heavily on vascular endothelial growth factor (VEGF), a critical protein that contributes to all forms of vascular formation and remodeling including angiogenesis, arteriogenesisand vasculogenesis. VEGF itself is up-regulated by the transcription factor, hypoxia inducible factor 1 alpha (HIF-1α), which becomes activated in low oxygen environments.

Through the use of animal chronic hindlimb ischemia models, these genes can be evaluated as …

Alcohol Exposure Alters Mouse Lung Inflammation In Response To Inhaled Dust., Michael L. Mccaskill, Debra J. Romberger, Jane M. Devasure, Jessica Boten, Joseph H. Sisson, Kristina L. Bailey, Jill A. Poole, Todd A. Wyatt

Journal Articles: Pulmonary & Critical Care Med

Alcohol exposure is associated with increased lung infections and decreased mucociliary clearance. Occupational workers exposed to dusts from concentrated animal feeding operations (CAFOs) are at risk for developing chronic inflammatory lung diseases. Agricultural worker co-exposure to alcohol and organic dust has been established, although little research has been conducted on the combination effects of alcohol and organic dusts on the lung. Previously, we have shown in a mouse model that exposure to hog dust extract (HDE) collected from a CAFO results in the activation of protein kinase C (PKC), elevated lavage fluid cytokines/chemokines including interleukin-6 (IL-6), and the development of …

A Mixed Methods Approach To Food Safety Knowledge, Beliefs And Practices In Hispanic Families With Young Children In Nebraska, Kristen M. Stenger

College of Education and Human Sciences: Dissertations, Theses, and Student Research

This mixed methods study addresses food safety for Hispanic families with young children in Nebraska. A convergent mixed methods design was used, where qualitative and quantitative data were collected in parallel, analyzed separately and then merged in analysis and interpretation. A quantitative food safety knowledge survey (n=90, 52 from focus groups, 38 from piloting the survey), was used to assess the FightBac!™ concepts: Clean, Separate, Cook, Chill, and two additional concepts: foods that increase risk, and groups at increased risk. Qualitative focus groups explored food safety handling beliefs and practices through the lens of the Health Belief Model. Focus groups …

Diffusion Weighted Mr Imaging Of Ring Enhancing Brain Lesions, Muhammad Shahbaz Alam, Zafar Sajjad, Muhammad Azeemuddin, Zahid Anwar Khan, Fatima Mubarak, Waseem Akhtar

Department of Radiology

Objective: To evaluate the role of diffusion weighted imaging in differentiating the cause of ring enhancing brain lesions.

Study Design: Analytical, descriptive study.

Place and Duration of Study: Department of Radiology, The Aga Khan University Hospital, Karachi, from March 2007 to July 2011. Methodology: Diffusion weighted imaging (DWI) was performed on 37 patients having ring enhancing lesions on their post-contrast brain MRI scans. These lesions were characterized into neoplastic and abscess cavity on the basis of diffusion restriction. Correlation of all these findings was done with histopathology obtained in all these patients. Sensitivity, specificity, positive and negative predictive values and …

Intermediate-Term Mortality And Cardiac Transplantation In Infants With Single-Ventricle Lesions: Risk Factors And Their Interaction With Shunt Type., James S. Tweddell, Lynn A. Sleeper, Richard G. Ohye, Ismee A. Williams, Lynn Mahony, Christian Pizarro, Victoria L. Pemberton, Peter C. Frommelt, Scott M. Bradley, James F. Cnota, Jennifer Hirsch, Paul M. Kirshbom, Jennifer S. Li, Nancy Pike, Michael Puchalski, Chitra Ravishankar, Jeffrey P. Jacobs, Peter C. Laussen, Brian W. Mccrindle, Pediatric Heart Network Investigators, Girish S. Shirali

Manuscripts, Articles, Book Chapters and Other Papers

OBJECTIVE: The study objective was to identify factors associated with death and cardiac transplantation in infants undergoing the Norwood procedure and to determine differences in associations that might favor the modified Blalock-Taussig shunt or a right ventricle-to-pulmonary artery shunt.

METHODS: We used competing risks methodology to analyze death without transplantation, cardiac transplantation, and survival without transplantation. Parametric time-to-event modeling and bootstrapping were used to identify independent predictors.

RESULTS: Data from 549 subjects (follow-up, 2.7 ± 0.9 years) were analyzed. Mortality risk was characterized by early and constant phases; transplant was characterized by only a constant phase. Early phase factors associated …

Mice Deficient In Gem Gtpase Show Abnormal Glucose Homeostasis Due To Defects In Beta-Cell Calcium Handling, Jenny E. Gunton, Mary Sisavanh, Rebecca A. Stokes, Jon Satin, Leslie S. Satin, Min Zhang, Sue M. Liu, Weikang Cai, Kim Cheng, Gregory J. Cooney, D. Ross Laybutt, Trina So, Juan-Carlos Molero, Shane T. Grey, Douglas A. Andres, Michael S. Rolph, Charles R. Mackay

Physiology Faculty Publications

AIMS AND HYPOTHESIS: Glucose-stimulated insulin secretion from beta-cells is a tightly regulated process that requires calcium flux to trigger exocytosis of insulin-containing vesicles. Regulation of calcium handling in beta-cells remains incompletely understood. Gem, a member of the RGK (Rad/Gem/Kir) family regulates calcium channel handling in other cell types, and Gem over-expression inhibits insulin release in insulin-secreting Min6 cells. The aim of this study was to explore the role of Gem in insulin secretion. We hypothesised that Gem may regulate insulin secretion and thus affect glucose tolerance in vivo.

METHODS: Gem-deficient mice were generated and their metabolic phenotype characterised by in …

Role Of Nsmase-3/Cermide Signaling In Muscle Atrophy, Zaheen Rabbani

Kaleidoscope

No abstract provided.

Disparities In Mental Health Utilization Among Persons With Chronic Diseases, Saundra Glover, Keith Elder, Sudha Xirasagar, Jong-Deuk Baek, Crystal Piper, Dayna Campbell

Journal of Health Disparities Research and Practice

This study used Aday and Andersen’s Behavioral Model of Health Services Use to examine the role of chronic disease and the joint impact of race and chronic disease type on mental health utilization. Using data from Community Tracking Survey Household Survey, we tested the assumption that chronic disease, chronic disease type, and race are related to lower rates of mental health visits when adjusted for predisposing, enabling, and need factors. After adjusting for population characteristics, we found that race significantly moderated the impact of chronic disease type on mental health utilization, showing that African Americans with cardiovascular disease were half …

Developing A Preference Assessment Tool For Use Among Minority And Low Literacy Primary Care Patients, Sarah T. Hawley, Maria Jibaja-Weiss, Partha Krishnamurthy, Sally W. Vernon, Natoshia Hebert, Robert Volk

Journal of Health Disparities Research and Practice

Incorporating patients’ preferences into healthcare decisions has been identified as one mechanism for reducing health disparities. Some research suggests that providers need to tailor medical recommendations to the preferences of their patients. Yet there are few tools to facilitate clarification of preferences for health services. This paper reports the process of testing an innovative preference elicitation technique—conjoint analysis—among minorities and low literacy patients using the example of colorectal cancer (CRC) screening. CRC screening exemplifies preference-sensitive healthcare as there exist several screening options. However, screening rates among minorities are low. Better methods for preference assessment could improve patient-provider communication and increase …

Brief Communications

Journal of Health Disparities Research and Practice

No abstract provided.

The Hiv/Aids Pandemic In African American Msm: Targets For Intervention, Kelly Neff

Journal of Health Disparities Research and Practice

The Centers for Disease Control and Prevention estimated in 2005 that 46% of African American men who have sex with men (MSM) are HIV positive. This review explores the unique factors that contribute to risky sexual behavior and the spread of HIV within this population, suggesting that the disparate prevalence of HIV among African American MSM is rooted in experiences of stigmatization from multiple sources and lack of social support from society at large as well as from within the African American community. Beliefs in HIV conspiracy myths are also thought to hinder HIV education, awareness and prevention for African …

Transdisciplinary Approaches To Ameliorating Racial Disparities In Prostate Cancer Outcomes, Chanita H. Halbert, Katrina Armstrong, John Holmes, David Fenstermacher, Janet Weiner, Carmen Guerra, J. S. Schwartz, Jerry C. Johnson, Edmund Weisberg, Chantal Montagnet, Benita Weathers, Charnita Zeigler-Johnson, Ernestine Delmoor, Timothy R. Rebbeck

Journal of Health Disparities Research and Practice

Though prostate cancer is the second leading cause of cause cancer deaths among men in the US, it ranks first among African American men in terms of incidence, morbidity, and mortality. To address this and other complex health issues, some researchers advocate transdisciplinary research as a framework for analysis; however, few examples exist that indicate how the framework should be applied. This report uses prostate cancer outcomes as a paradigm to describe how such a framework can be used to identify determinants of racial disparities. By integrating diverse scientific disciplines, methods, and analytic approaches from psychology, sociology, epidemiology and genetics, …

A Pilot Self-Care Group Intervention For Low-Income Hiv-Positive Women, Maithe Enriquez, Margaret S. Miles, Jacki Witt, Paul Gore, Nancy Lackey

Journal of Health Disparities Research and Practice

This article describes the development of a self-care intervention and examines its efficacy with low-income HIV-positive women (n=34) in the Midwestern United States. Adapted from an individual nurse-led intervention, this effort focused on increasing self-care behaviors through enhancing self-esteem and social support. The investigators used a community-based participatory approach and partnered with three HIV-positive women to adapt and pilot test the new group intervention. A within-group, repeated-measures, pre-/post-test design, together with participant interviews, was used to evaluate the intervention. Mean scores on measures of self-care behaviors, self-esteem, social support and depressive symptoms all changed in the clinically desirable direction. Group …

Non-Typeable Haemophilus Influenzae Decreases Cilia Beating Via Protein Kinase Cε., Kristina L. Bailey, Tricia D. Levan, Daniel A. Yanov, Jacqueline A. Pavlik, Jane M. Devasure, Joseph H. Sisson, Todd A. Wyatt

Journal Articles: Pulmonary & Critical Care Med

BACKGROUND: Haemophilus influenzae infection of the nasal epithelium has long been associated with observations of decreased nasal ciliary beat frequency (CBF) and injury to the ciliated epithelium. Previously, we have reported that several agents that slow CBF also have the effect of activating protein kinase C epsilon (PKCε) activity in bronchial epithelial cells. The subsequent auto-downregulation of PKCε or the direct inhibition of PKCε leads to the specific detachment of the ciliated cells.

METHODS: Primary cultures of ciliated bovine bronchial epithelial cells were exposed to filtered conditioned media supernatants from non-typeable H. influenzae (NTHi) cultures. CBF and motile points were …

Trends In Mortality From Septicaemia And Pneumonia With Economic Development: An Age-Period-Cohort Analysis, Irene O.L. Wong, Benjamin J. Cowling, Gabriel M. Leung, Mary Schooling

Publications and Research

Background
Hong Kong population has experienced drastic changes in its economic development in the 1940s. Taking advantage of Hong Kong’s unique demographic and socioeconomic history, characterized by massive, punctuated migration waves from Southern China, and recent, rapid transition from a pre-industrialized society to the first ethnic Chinese community reaching ‘‘first world’’ status over the last 60 years (i.e., in two or three generations), we examined the longitudinal trends in infection related mortality including septicemia compared to trends in non-bacterial pneumonia to generate hypotheses for further testing in other recently transitioned economies and to provide generalized aetiological insights on how economic …

Health Literacy As A Contributor To Immigrant Health Disparities, Jennifer B. Kimbrough

Journal of Health Disparities Research and Practice

The ability to obtain, understand and use the information needed to make wise health choices is known as health literacy. Low health literacy among members of populations with poor reading skills, limited mastery of the English language, members of ethnic or cultural minorities, and immigrants is likely a major contributor to health disparities in the US (Agency for Health Care Policy and Research 1997). A series of focus groups with East-Asian, African, Central and South American immigrants was conducted to better understand the perceptions of immigrants seeking health care services in an urban North Carolina county. Participants’ responses are reported …

Cumulative Risk And A Call For Action In Environmental Justice Communities, H. P. Hynes, Russ Lopez

Journal of Health Disparities Research and Practice

Health disparities, social inequalities, and environmental injustice cumulatively affect individual and community vulnerability and overall health; yet health researchers, social scientists and environmental scientists generally study them separately. Cumulative risk assessment in poor, racially segregated, economically isolated and medically underserved communities needs to account for their multiple layers of vulnerability, including greater susceptibility, greater exposure, less preparedness to cope, and less ability to recover in the face of exposure. Recommendations for evidence-based action in environmental justice communities include: reducing pollution in communities of highest burden; building on community resources; redressing inequality when doing community-based research; and creating a screening framework …

Eliminating Racial/Ethnic Health Disparities: Reconsidering Comparative Approaches, Shawn M. Bediako, Derek M. Griffith

Journal of Health Disparities Research and Practice

The focus on eliminating racial/ethnic health disparities has brought critical attention to the poor health status of minority populations. Assessing the health outcomes of racial minority groups by comparing them to a racial majority standard is valuable for identifying and monitoring health inequities, but may not be the most effective approach to identifying strategies that can be used to improve minority health outcomes. Health promotion planning models and public health history both suggest that minority health promotion is more likely to be derived from interventions rooted in culturally and historically grounded contextual factors. In this essay, we highlight limitations of …

The Wholehearted Embrace: My First Hdsa Convention, Kenneth P. Serbin

At Risk for Huntington's Disease

No abstract provided.

Transforming Growth Factor-Β Suppresses Metastasis In A Subset Of Human Colon Carcinoma Cells., Neka A.K. Simms, Ashwani Rajput, Elizabeth A. Sharratt, Melanie Ongchin, Carol A. Teggart, J. Wang, Michael G. Brattain

Journal Articles: Eppley Institute

BACKGROUND: TGFβ signaling has typically been associated with suppression of tumor initiation while the role it plays in metastasis is generally associated with progression of malignancy. However, we present evidence here for an anti-metastatic role of TGFβ signaling.

METHODS: To test the importance of TGFβ signaling to cell survival and metastasis we compared human colon carcinoma cell lines that are either non-tumorigenic with TGFβ response (FET), or tumorigenic with TGFβ response (FETα) or tumorigenic with abrogated TGFβ response via introduction of dominant negative TGFβRII (FETα/DN) and their ability to metastasize. Metastatic competency was assessed by orthotopic transplantation. Metastatic colony formation …

Yale’S Partnership Against Huntington’S Disease: An Alumnus Reconnects And Finds Hope As Scientists Pursue 'Viagra For The Brain' And Other Solutions, Kenneth P. Serbin

At Risk for Huntington's Disease

No abstract provided.

Selective Impact Of Hiv Disease Progression On The Innate Immune System In The Human Female Reproductive Tract, Timothy Lahey, Mimi Ghosh, John V. Fahey, Zheng Shen, Lucy R. Mukura, Yan Song, Susan Cu-Uvin, Kenneth H. Mayer, Peter F. Wright, John C. Kappes, Christina Ochsenbauer, Charles R. Wira

Dartmouth Scholarship

Background: We have previously demonstrated intrinsic anti-HIV activity in cervicovaginal lavage (CVL) from HIV-infected women with high CD4 counts and not on antiretroviral therapy. However, the impact of HIV disease progression on CVL innate immune responses has not been delineated.

Methods: CVL from 57 HIV-infected women not on antiretroviral therapy were collected by washing the cervicovaginal area with 10 ml of sterile normal saline. We characterized subject HIV disease progression by CD4 count strata: >500 cells/µl, 200-500 cells/µl, or <200 cells/µl of blood. To assess CVL anti-HIV activity, we incubated TZM-bl cells with HIV plus or minus CVL. Antimicrobials, cytokines, chemokines and anti-gp160 HIV IgG antibodies were measured by ELISA and Luminex.

Vasa-Like Dead-Box Rna Helicases Of Schistosoma Mansoni, Danielle E. Skinner, Gabriel Rinaldi, Sutas Suttiprapa, Victoria H. Mann, Pablo Smircich, Alexis A. Cogswell, David L. Williams, Paul J. Brindley

Microbiology, Immunology, and Tropical Medicine Faculty Publications

Genome sequences are available for the human blood flukes, Schistosoma japonicum, S. mansoni and S. haematobium. Functional genomic approaches could aid in identifying the role and importance of these newly described schistosome genes. Transgenesis is established for functional genomics in model species, which can lead to gain- or loss-of-functions, facilitate vector-based RNA interference, and represents an effective forward genetics tool for insertional mutagenesis screens. Progress toward routine transgenesis in schistosomes might be expedited if germ cells could be reliably localized in cultured schistosomes. Vasa, a member of the ATP-dependent DEAD-box RNA helicase family, is a prototypic marker of …

The Emerging Hiv Epidemic On The Mexico-U.S. Border: An International Case Study Characterizing The Role Of Epidemiology In Surveillance And Response, Steffaine Strathdee, Carlos Magis-Rodriguez, Richard Jimenez

Walden Faculty and Staff Publications

Purpose

Human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome surveillance data are critical for monitoring epidemic trends, but they can mask dynamic subepidemics, especially in vulnerable populations that underuse HIV testing. In this case study, we describe community-based epidemiologic data among injection drug users (IDUs) and female sex workers (FSWs) in two northern Mexico-U.S. border states that identified an emerging HIV epidemic and generated a policy response.

Methods

We draw from quantitative and qualitative cross-sectional and prospective epidemiologic studies and behavioral intervention studies among IDUs and FSWs in Tijuana, Baja California, and Ciudad Juarez, Chihuahua.

Results

The recognition that the HIV epidemic …

Development Of A Protocol To Measure Gene Expression In The Mouse Tibia, Daniel Hoover

Biomedical Engineering

Numerous molecular factors active in bone tissue direct fracture repair and remodeling which can be altered by disease conditions such as Peripheral Arterial Disease (PAD) and Osteoporosis. Methods of molecular biology are commonly applied to investigate the expression and role of these molecular factors. This project presents a robust three-step protocol for examining gene expression in the mouse tibia. The protocol begins with isolating RNA from a flash frozen tibia sample. The isolated RNA is reverse transcribed into cDNA. Finally, PCR is performed to indentify expressed genes. Establishing this protocol will allow further research into the mechanisms of bone remodeling …