Digital Commons Network^™

Inferences & Connections, Tamara Kneese

Media Studies

Data-oriented systems are inferring relationships between people based on genetic material, behavioral patterns (e.g., shared geography imputed by phone carriers), and performed associations (e.g., "friends" online or shared photographs). What responsibilities do entities who collect data that imputes connections have to those who are implicated by association? For example, as DNA and other biological materials are collected outside of medicine (e.g., at point of arrest, by informatics services like 23andme, for scientific inquiry), what rights do relatives (living, dead, and not-yet-born) have? In what contexts is it acceptable to act based on inferred associations and in which contexts is it …

Heme Oxygenase-1 Induction Improves Cardiac Function Following Myocardial Ischemia By Reducing Oxidative Stress, Yossi Issan, Ran Kornowski, Dan Aravot, Asher Shainberg, Michal Laniado-Schwartzman, Komal Sodhi, Nader G. Abraham, Edith Hochhauser

Internal Medicine

Background

Oxidative stress plays a key role in exacerbating diabetes and cardiovascular disease. Heme oxygenase-1 (HO-1), a stress response protein, is cytoprotective, but its role in post myocardial infarction (MI) and diabetes is not fully characterized. We aimed to investigate the protection and the mechanisms of HO-1 induction in cardiomyocytes subjected to hypoxia and in diabetic mice subjected to LAD ligation.

Methods

In vitro: cultured cardiomyocytes were treated with cobalt-protoporphyrin (CoPP) and tin protoporphyrin (SnPP) prior to hypoxic stress. In vivo: CoPP treated streptozotocin-induced diabetic mice were subjected to LAD ligation for 2/24 h. Cardiac function, histology, biochemical damage markers …

Fgf-2 Induces Neuronal Death Through Upregulation Of System Xc-, Xiaoqian Liu, Rebecca Albano, Doug Lobner

Biomedical Sciences Faculty Research and Publications

The cystine/glutamate antiporter (system xc-) transports cystine into cell in exchange for glutamate. Fibroblast growth factor-2 (FGF-2) upregulates system xc- selectively on astrocytes, which leads to increased cystine uptake, the substrate for glutathione production, and increased glutamate release. While increased intracellular glutathione can limit oxidative stress, the increased glutamate release can potentially lead to excitotoxicity to neurons. To test this hypothesis, mixed neuronal and glial cortical cultures were treated with FGF-2. Treatment with FGF-2 for 48 h caused a significant neuronal death in these cultures. Cell death was not observed in neuronal-enriched cultures, or astrocyte-enriched …

Food Environment And Socioeconomic Status Influence Obesity Rates In Seattle And In Paris, Adam Drewnowski, Anne Vernez Moudon, Junfeng Jiao, Anju Aggarwal, Helene Charreire, Basile Chaix

Research Collection College of Integrative Studies

OBJECTIVE: To compare the associations between food environment at the individual level, socioeconomic status (SES) and obesity rates in two cities: Seattle and Paris. METHODS: Analyses of the SOS (Seattle Obesity Study) were based on a representative sample of 1340 adults in metropolitan Seattle and King County. The RECORD (Residential Environment and Coronary Heart Disease) cohort analyses were based on 7131 adults in central Paris and suburbs. Data on sociodemographics, health and weight were obtained from a telephone survey (SOS) and from in-person interviews (RECORD). Both studies collected data on and geocoded home addresses and food shopping locations. Both studies …

Tobacco Awareness Among Physicians In The Former Soviet Block, L. Daniel Holsinger, Dr. Gordon Lindsay

Journal of Undergraduate Research

During the summer of 2001, I traveled for the third time to Ukraine. Unlike my previous longstay residencies in Ukraine (totaling four years), which had focused on language and cultural studies, as well as general humanitarian and missionary service, my third stay was motivated by an explicit agenda to fight big tobacco interests in that country. With strong faculty support, and convinced that the frontal marketing assault to expand tobacco markets in Ukraine was harmful to its citizens, I designed and began to carry out a research effort focused primarily on a tobacco consumption crisis in the former Soviet Union. …

Superoxide Signaling In Perivascular Adipose Tissue Promotes Age-Related Artery Stiffness, Bradley S. Fleenor, Jason S. Eng, Amy L. Sindler, Bryant T. Pham, Jackson D. Kloor, Douglas R. Seals

Graduate Center for Nutritional Sciences Faculty Publications

We tested the hypothesis that superoxide signaling within aortic perivascular adipose tissue (PVAT) contributes to large elastic artery stiffening in old mice. Young (4-6 months), old (26-28 months), and old treated with 4-Hydroxy-2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPOL), a superoxide scavenger (1 mm in drinking water for 3 weeks), male C57BL6/N mice were studied. Compared with young, old had greater large artery stiffness assessed by aortic pulse wave velocity (aPWV, 436 ± 9 vs. 344 ± 5 cm s(-1)) and intrinsic mechanical testing (3821 ± 427 vs. 1925 ± 271 kPa) (both P < 0.05). TEMPOL treatment in old reversed both measures of arterial stiffness. Aortic PVAT superoxide production was greater in old (P < 0.05 vs. Y), which was normalized with TEMPOL. Compared with young, old controls had greater pro-inflammatory proteins in PVAT-conditioned media (P < 0.05). Young recipient mice transplanted with PVAT from old compared with young donors for 8 weeks had greater aPWV (409 ± 7 vs. 342 ± 8 cm s(-1)) and intrinsic mechanical properties (3197 ± 647 vs. 1889 ± 520 kPa) (both P < 0.05), which was abolished with TEMPOL supplementation in old donors. Tissue-cultured aortic segments from old in the presence of PVAT had greater mechanical stiffening compared with old cultured in the absence of PVAT and old with PVAT and TEMPOL (both, P < 0.05). In addition, PVAT-derived superoxide was associated with arterial wall hypertrophy and greater adventitial collagen I expression with aging that was attenuated by TEMPOL. Aging or TEMPOL treatment did not affect blood pressure. Our findings provide evidence for greater age-related superoxide production and pro-inflammatory proteins in PVAT, and directly link superoxide signaling in PVAT to large elastic artery stiffness.

Aortic Aneurysms In Loeys-Dietz Syndrome - A Tale Of Two Pathways?, Frank Davis, Debra L. Rateri, Alan Daugherty

Saha Cardiovascular Research Center Faculty Publications

Loeys-Dietz syndrome (LDS) is a connective tissue disorder that is characterized by skeletal abnormalities, craniofacial malformations, and a high predisposition for aortic aneurysm. In this issue of the JCI, Gallo et al. developed transgenic mouse strains harboring missense mutations in the genes encoding type I or II TGF-β receptors. These mice exhibited several LDS-associated phenotypes. Despite being functionally defective, the mutated receptors enhanced TGF-β signaling in vivo, inferred by detection of increased levels of phosphorylated Smad2. Aortic aneurysms in these LDS mice were ablated by treatment with the Ang II type 1 (AT1) receptor antagonist losartan. The results from this …

Morphine Enhances Hiv-1sf162-Mediated Neuron Death And Delays Recovery Of Injured Neurites, Ruturaj R. Masvekar, Nazira El-Hage, Kurt F. Hauser, Pamela E. Knapp

Anatomy and Neurobiology Publications

HIV-1 enters the CNS soon after initial systemic infection; within the CNS parenchyma infected and/or activated perivascular macrophages, microglia and astrocytes release viral and cellular toxins that drive secondary toxicity in neurons and other cell types. Our previous work has largely modeled HIV-neuropathology using the individual viral proteins Tat or gp120, with murine striatal neurons as targets. To model disease processes more closely, the current study uses supernatant from HIV-1-infected cells. Supernatant from HIV-1SF162-infected differentiated-U937 cells (HIV+sup) was collected and p24 level was measured by ELISA to assess the infection. Injection drug abuse is a significant risk factor for HIV-infection, …

Women In Leadership: How A Woman’S Background Affects Her Leadership Style, Serena Bahe, Richard Ruiz, Armando Tejeda, Steven Sill

Verbum Incarnatum: An Academic Journal of Social Justice

Stereotypes and beliefs about women have often kept them from equality with men. What is more striking is that women perpetuate the stereotypes and beliefs as much as men and society as a whole. This literature review focuses on three areas in a woman’s background that influence her ability to lead: a) triggers that propel her into a leadership position, b) the “intersectionalities” or multiple identities and personalities a woman must have to be an effective leader, and c) how the context of where she leads affects her leadership behavior. It also addresses the need for more research to identify …

Inhibition Of Amp-Activated Protein Kinase Signaling Alleviates Impairments In Hippocampal Synaptic Plasticity Induced By Amyloid Beta, T. Ma, Y. R. Chen, V. Vingtdeux, H. T. Zhao, B. Viollet, P. Marambaud, E. Klann

Journal Articles

The AMP-activated protein kinase (AMPK) is a Ser/Thr kinase that is activated in response to low-energy states to coordinate multiple signaling pathways to maintain cellular energy homeostasis. Dysregulation of AMPK signaling has been observed in Alzheimer's disease (AD), which is associated with abnormal neuronal energy metabolism. In the current study we tested the hypothesis that aberrant AMPK signaling underlies AD-associated synaptic plasticity impairments by using pharmacological and genetic approaches. We found that amyloid beta (A beta)-induced inhibition of long-term potentiation (LTP) and enhancement of long-term depression were corrected by the AMPK inhibitor compound C (CC). Similarly, LTP impairments in APP/PS1 …

Nf-Kappa B-To-Ap-1 Switch: A Mechanism Regulating Transition From Endothelial Barrier Injury To Repair In Endotoxemic Mice, G. Liu, X. B. Ye, E. J. Miller, S. F. Liu

Journal Articles

Endothelial barrier disruption is a hallmark of multiple organ injury (MOI). However, mechanisms governing the restoration of endothelial barrier function are poorly understood. Here, we uncovered an NF-kappa B-to-AP-1 switch that regulates the transition from barrier injury to repair following endotoxemic MOI. Endothelial NF-kappa B mediates barrier repair by inhibiting endothelial cell (EC) apoptosis. Blockade of endothelial NF-kappa B pathway activated the activator protein (AP)-1 pathway (NF-kappa B-to-AP-1 switch), which compensated for the anti-apoptotic and barrier-repair functions of NF-kappa B. The NF-kappa B-to-AP-1 switch occurred at 24 hours (injury to repair transition phase), but not at 48 hours (repair phase) …

Health Beliefs Of Muslim Women And Implications For Health Care Providers: Exploratory Study On The Health Beliefs Of Muslim Women, Lori Maria Walton Phd, Dpt, Fatima Akram, Rdms, Bs, Ferdosi Hossain, Bba

Journal of Health Ethics

Abstract:

Purpose: This study investigated specific health beliefs of Muslim women and their decision to access and follow through with health care provider evaluation and treatment. Design and Methods: This was a cross-sectional prospective research design aimed at exploring the beliefs, perceptions, and attitudes of Muslim women living in USA toward health. A purposive sampling of fourteen (n=14) Muslim women who volunteered to take part in this study completed a survey of health beliefs, attitudes, and perceptions constructed from Purnell's cultural competence model. Results: Results suggest that Muslim women perceive specific health beliefs as important and may have …

Metal Containing Nucleosides That Function As Therapeutic Diagnostic Agents Against Brain Cancer, Jennifer Nicole Williams

ETD Archive

Nucleoside transporters are essential components for the hyperproliferative capabilities of brain cancer cells. These transporters play important roles to increase nucleoside metabolism which is necessary for higher levels of DNA and RNA synthesis. The goal here is to use a series of metal containing nucleoside (MCN) analogues as novel chemical agents to study how nucleosides are imported into cells. In addition, we expect that these MCNs will ultimately function as therapeutic and/or diagnostic agents for brain cancer. Concentrative nucleoside transporters (CNTs) and equilibrative nucleoside transporters (ENTs) represent the two classes of transporters that allow MCNs to travel in (and out) …

Integrins Promote Cytokinesis Through The Rsk Signaling Axis, Shomita S. Mathew, Bethsaida Nieves, Sharon Sequeira, Savitha Sambandamoorthy, Kevin Pumiglia, Melinda Larsen, Susan E. Laflamme

Biological Sciences Faculty Scholarship

Cytokinesis is the final stage in cell division. Although integrins can regulate cytokinesis, the mechanisms involved are not fully understood. In this study, we demonstrate that integrin-regulated ERK (extracellular signal-related kinase) and RSK (p90 ribosomal S6 kinase) signaling promotes successful cytokinesis. Inhibiting the activation of ERK and RSK in CHO cells by a mutation in the integrin b1 cytoplasmic tail or with pharmacological inhibitors results in the accumulation of cells with midbodies and the formation of binucleated cells. Activation of ERK and RSK signaling by the expression of constitutively active RAF1 suppresses the mutant phenotype in a RSK-dependent manner. Constitutively …

Qualitative Research: A Pathway To Gain An Understanding Of Uae Mothers’ Experiences And Perceptions Of Managing A Child Newly Diagnosed With Type 1 Diabetes, Jennifer Louise Cooper, Suhad Marjei, Rachel Rossiter, Sharon Brownie

School of Nursing & Midwifery, East Africa

A childhood diagnosis of Type 1 diabetes is a life changing event for both the child and his/her family. The impact is experienced strongly by mothers who most frequently fulfil the primary caregiver role for children12 yrs old and younger. Studies which have sought to understand mothers’ experiences and perceptions of managing a child newly diagnosed with Type 1 diabetes are mostly questionnaire-based and few, if any, explore the issues within the uniqueness of a Middle-Eastern context. The qualitative research methods described in this discussion have been designed to gain a better understanding of UAE mothers’ experience in managing a …

Contributions Of Personality, Acculturation/Enculturation And Perceived Racial Discrimination To Social Anxiety Among Chinese Immigrants : A Context-Specific Assessment, Ke Fang

Legacy Theses & Dissertations (2009 - 2024)

Previous studies have documented that Asian immigrants tend to report higher levels of social anxiety than do their White American counterparts. However, little is known about the sources and predictors of social anxiety under the context of cultural change.

Tmprss2-Erg Regulation Of Androgen Biosynthetic Enzyme Expression, Dht Synthesis, And Androgen Receptor Activation In Prostate Cancer, Katelyn Ann Powell

Wayne State University Dissertations

Intratumoral androgen synthesis in prostate cancer (PCa) contributes to the development of castration-resistant prostate cancer (CRPC). Several enzymes responsible for androgen biosynthesis have been shown to be overexpressed in CRPC, thus, contributing to CRPC in a castrated environment. Although intratumoral androgen synthesis is thought to contribute to the development and progression of CRPC, currently little is known regarding the regulation of androgen biosynthetic enzyme gene expression in PCa. The TMPRSS2-ERG transcription factor has been shown to be present in primary PCa tumors as well as CRPC tumors. The hypothesis was investigated that TMPRSS2-ERG fusions regulate androgen biosynthetic enzyme (ABE) gene …

Evaluation And Comparison Of Alpha- And Beta-Amanitin Toxicity On Mcf-7 Cell Line, Ertuğrul Kaya, Recep Bayram, Kürşat Oğuz Yaykaşli, İsmai̇l Yilmaz, Sai̇t Bayram, Emi̇ne Yaykaşli, Muhsi̇ne Zeynep Yavuz, Ali̇ Akçahan Gepdi̇remen

Turkish Journal of Medical Sciences

Alpha- and beta-amanitins are the main toxins of the poisonous Amanita phalloides mushroom. Although there are many studies available concerning alpha-amanitin, there are limited data about beta-amanitin in the literature. Therefore, this study is aimed at comparing the toxic effects of alpha- and beta-amanitin on the MCF-7 cell line. Materials and methods: The alpha- and beta-amanitins used for this research were purified from Amanita phalloides by preparative high-performance liquid chromatography. The MCF-7 breast cancer cell line was used, and specific concentrations of the toxins (100, 10, 1, 0.1, and 0.01 µg/mL) were applied to the cells. The MTT test was …

Examining Reasons For Low Fidelity To Educational Programs In Patients With Gestational Diabetes: A Qualitative Study, Lauren Brinkman Roberson

Theses and Dissertations--Nutrition and Food Systems

Gestational diabetes mellitus (GDM) is an increasing problem in the U.S. Many comorbidities are associated with GDM: increased risk for type 2 diabetes, neonatal hypoglycemia and fetal malformation. Healthcare organizations develop GDM educational programs to provide women with knowledge and skills to manage GDM and reduce health risks. While there are significant benefits to attending GDM educational programs, attendance rates are low. Little research has been conducted to determine reasons for low attendance in GDM educational programs. The purpose of this study was to explore the experiences of women with GDM and to describe factors influencing GDM educational program attendance. …

Factors That Influence The Stigma Associated With Posttraumatic Stress Disorder, Anna M. Chester

All Master's Theses

The current study focused on posttraumatic stress disorder (PTSD) and how factors such as gender or military status and precipitating trauma associated with the disorder influenced the occurrence or strength of the participants' perceived and personal stigma and desired social distance to the individual suffering from PTSD. Participants' PTSD knowledge was measured and evaluated as a potential covariate. Three hundred and thirty male and female undergraduate participants were randomly assigned to 1 of 12 experimental vignettes that varied by gender, military status, and precipitating trauma associated with an individual suffering from PTSD. Results supported one of the proposed hypotheses: knowledge …

Molecular Studies On The Anti-Tumor Effects Of Metal-Based Complexes: Involvement Of The Ubiquitin-Proteasome And Apoptotic Pathways, Sara M. Schmitt

Wayne State University Dissertations

The ubiquitin-proteasome pathway is crucial to normal cellular function, and as such, has been extensively investigated as a potential target for cancer therapeutics. Many compounds have been tested for their proteasome inhibitory ability, including various small peptide aldehydes, and, following the success of cisplatin, several metal-containing complexes. The efficacy of these compounds in preclinical studies ultimately resulted in the development and approval of the first-in-class proteasome inhibitor bortezomib, the use of which, unfortunately, has been hindered by toxicity and resistance. These limitations have led to a massive push toward designing and developing new, less toxic proteasome inhibitors for clinical use. …

Matriptase Mediated C-Met Signaling In Breast Cancer, Gina Lynn Zoratti

Wayne State University Dissertations

MATRIPTASE MEDIATED c-MET SIGNALING IN CRITICAL FOR BREAST CANCER PROGRESSION

by

GINA ZORATTI

Historically proteases have been associated with tumor progression and metastasis through degradation of the basement membrane. However, in recent years these enzymes have also been shown to play key roles in the activation of growth factors and cytokines, thereby activating pro-oncogenic signaling pathways. Matriptase (MT-SP1, ST14) is an epithelia-specific pericellular protease which has received considerable attention in recent years spurred by the consistent dysregulation of the protease in human epithelial tumors including breast cancer. We have performed both functional and mechanistic studies of matriptase in breast cancer …

The Incidence And Influence Of Musculoskeletal And Nerve Injuries Among Occupational Therapists: An Exploratory Study, Alyssa A. Jenkins, Renae H. Witta

Occupational Therapy Capstones

Purpose: The purpose of this research study was to explore the incidence and influence of musculoskeletal and nerve injuries among occupational therapists. Specifically, we examined the influence of musculoskeletal and nerve injuries on work satisfaction, work performance and overall quality of life in occupational therapists practicing in physical rehabilitation settings.

Methodology: An exploratory survey research design was implemented following study approval from the University of North Dakota (UND) Institutional Review Board. Occupational therapists who were affiliated with the UND Occupational Therapy Program contract sites were invited, via email, to participate in this exploratory study. In addition, the survey was posted …

Positional Plagiocephaly Among Tribal Societies And Contemporary Western Societies: A Comparison Of Treatments, Results, And Effects, Jacinda Rose Ruggles

Honors Program Theses

This study explores the two causes of positional plagiocephaly, or abnormal head shape in infants as well as effects and treatments. To do so, two groups were chosen for comparison: contemporary western societies and tribal Native American societies. In the first group, the medical condition known as positional plagiocephaly is considered before, during and after the Safe to Sleep campaign of the 1990’s. In the second group infant head flattening is discussed as a result of cradling practices and carrying techniques. The importance of this study is to contribute new insight into positional plagiocephaly and its treatments. The study combines …

Quantitative Mass Spectrometric Investigations Of Protein Biomarkers: Serum Thymidine Kinase 1 And Human Osteopontin, Morse Faria

Theses and Dissertations

Mass spectrometry is being increasingly used in biomarker research mainly due to its ability to achieve high selectivity coupled with high sensitivity. This dissertation focuses on quantitative mass spectrometric investigations of two protein biomarkers i.e. serum thymidine kinase 1 (TK1) and human osteopontin (OPN).

First part of this research was focused on developing a liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS) method for measuring the activity of TK1 in serum by monitoring the conversion of a TK1 specific exogenous substrate, 3’-deoxy-3’-fluorothymidine (FLT), to its mono-phosphorylated form 3’-deoxy-3’-fluorothymidine monophosphate (FLT-MP). A method to quantify FLT-MP on LC-MS/MS was developed and …

Hiv And Opiates-Mediated Neurotoxicity: Gsk3Β Is A Potential Therapeutic Target, Ruturaj Masvekar

Theses and Dissertations

HIV-1 enters the CNS soon after initial systemic infection. HIV-1 can induce a wide range of neurological deficits, collectively known as HIV-1-associated neurocognitive disorders (HAND). Mature neurons are not infected by HIV-1; instead, infected and/or activated glial cells release various viral and cellular factors that induce direct and/or indirect neuronal toxicity, leading to HAND. Injection drug abuse is a significant risk factor for HIV-infection, and opiate drug abusers show increased HIV-neuropathology, even with anti-retroviral treatments. Our previous work has largely modeled HIV-neuropathology using the individual viral proteins Tat or gp120, with murine striatal neurons as targets. To model disease processes …

The Factor Structure And Psychometric Properties Of The Greek Version Of Career Motivational Types (Cmt-Q): Cross-Cultural Comparison In Greece And Bulgaria, Vaitsa Giannouli, Stanislava Stoyanova

Archives of Assessment Psychology

The psychometric properties of a Career Motivational Types Questionnaire based on Moses (2003) typology of major career motivators were studied in a Greek sample of 123 subjects (workers and unemployed people) in 2013. The results were compared with those coming from a Bulgarian sample of 132 subjects (workers, unemployed people and students) studied in 2013. A cohort comparison was performed on major Bulgarian career motivational types between the years 2007 and 2013. The similarities in the major motivators in both countries concerned prevalence of Personal developers, Stability seekers and Authenticity seekers as career motivational types and more diverse career motivators …

Examining Sexual Satisfaction And Pretending Orgasm, Chelsea Twiss

EWU Masters Thesis Collection

An article in popular women’s magazine, Cosmopolitan, recently revealed a startling admission from its readers: 86% of respondents reported pretending orgasm during intercourse with a partner (Kylstra, 2011). Despite its apparent frequency, there is yet to be a study conducted investigating the relationship between pretending orgasm and overall sexual satisfaction (Ippolito, 2012). Sexual satisfaction is linked with important facets of life such as overall relationship satisfaction and general wellbeing. The present study examines the relationship between experiencing orgasm, pretending orgasm and overall sexual satisfaction. Participants were Eastern Washington University college students recruited via an online survey website (Qualtrics), and who …

Engineering Fibroblast-Remodeled Electrospun Matrices For Full-Thickness Skin Regeneration, Paul Bonvallet

All ETDs from UAB

Skin is often severely damaged, resulting in the need for surgical intervention. There are many limitations to current therapies, therefore a synthetic skin graft would be invaluable for skin regeneration. The focus of the current study is on developing engineered scaffolds with embedded dermal fibroblasts that can be remodeled into native skin tissue upon implantation. To achieve this goal we created electrospun scaffolds composed of collagen I and polycaprolactone (PCL), and then introduced pores to allow fibroblast infiltration. In initial experiments performed to optimize pore size and collagen to PCL concentration, we determined that a 160 µm pore diameter, and …

Peripheral Neuropathy In The Teetering Mice Results From Mutation Of The Escrt Component Hrs, Jennifer Ashley Watson

All ETDs from UAB

The sorting and degradation of endocytosed cargo by the endosome regulates many cellular functions common to all cells. Neural cells appear to be particularly vulnerable to perturbation in endo-lysosomal transport, and several neurological disorders are caused by a primary deficit in this pathway. In this dissertation, I show that the spontaneously occurring neurological mutation teetering (tn) is a single nucleotide substitution in the endosomal cargo-sorting component hepatocyte growth factor-regulated tyrosine kinase substrate (Hgs/Hrs) that reduces the abundance of HRS. By 3 weeks of age, the tn mice exhibit heightened pain sensitivity, muscle weakness and reduced muscle size. The loss of …