Medicine and Health Sciences Commons^™

Lim Kinase Regulation Of Cytoskeletal Dynamics Is Required For Salivary Gland Branching Morphogenesis, Shayoni Ray, Joseph A. Fanti, Diego P. Macedo, Melinda Larsen

Biological Sciences Faculty Scholarship

Coordinated actin microfilament and microtubule dynamics is required for salivary gland development, although the mechanisms by which they contribute to branching morphogenesis are not defined. Because LIM kinase (LIMK) regulates both actin and microtubule organization, we investigated the role of LIMK signaling in mouse embryonic submandibular salivary glands using ex vivo organ cultures. Both LIMK 1 and 2 were necessary for branching morphogenesis and functioned to promote epithelial early- and late-stage cleft progression through regulation of both microfilaments and microtubules. LIMK-dependent regulation of these cytoskeletal systems was required to control focal adhesion protein– dependent fibronectin assembly and integrin β1 activation, …

A Population Of Langerin-Positive Dendritic Cells In Murine Peyer’S Patches Involved In Sampling B -Glucan Microparticles, Magdia De Jesus

Biomedical Sciences Faculty Scholarship

Glucan particles (GPs) are 2–4 mm hollow, porous shells composed of 1,3-b-D-glucan that have been effectively used for oral targeted–delivery of a wide range of payloads, including small molecules, siRNA, DNA, and protein antigens. While it has been demonstrated that the transepithelial transport of GPs is mediated by Peyer’s patch M cells, the fate of the GPs once within gut-associated lymphoid tissue (GALT) is not known. Here we report that fluorescently labeled GPs administered to mice by gavage accumulate in CD11c+ DCs situated in Peyer’s patch sub-epithelial dome (SED) regions. GPs appeared in DCs within minutes after gavage and remained …

Microfluidic Platform For The Elastic Characterization Of Mouse Submandibular Glands By Atomic Force Microscopy, Aaron P. Mosier, Sarah B. Peters, Melinda Larsen, Nathaniel C. Cady

Biological Sciences Faculty Scholarship

The ability to characterize the microscale mechanical properties of biological materials has the potential for great utility in the field of tissue engineering. The development and morphogenesis of mammalian tissues are known to be guided in part by mechanical stimuli received from the local environment, and tissues frequently develop to match the physical characteristics (i.e., elasticity) of their environment. Quantification of these material properties at the microscale may provide valuable information to guide researchers. Presented here is a microfluidic platform for the non-destructive ex vivo microscale mechanical characterization of mammalian tissue samples by atomic force microscopy (AFM). The device was …

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 …

The Relationship Between Area Poverty Rate And Site-Specific Cancer Incidence In The United States, Francis P. Boscoe, Christopher J. Johnson, Recinda L. Sherman, David G. Stinchcomb, Ge Lin, Kevin A. Henry

Epidemiology & Biostatistics Faculty Scholarship

BACKGROUND

The relationship between socioeconomic status and cancer incidence in the United States has not traditionally been a focus of population-based cancer surveillance systems.

METHODS

Nearly 3 million tumors diagnosed between 2005 and 2009 from 16 states plus Los Angeles were assigned into 1 of 4 groupings based on the poverty rate of the residential census tract at time of diagnosis. The sex-specific risk ratio of the highest-to-lowest poverty category was measured using Poisson regression, adjusting for age and race, for 39 cancer sites.

RESULTS

For all sites combined, there was a negligible association between cancer incidence and poverty; however, …

Corticosteroid Use, Emotional Health And Work/Regular Daily Activities : Ethnic Differences In Women With Systemic Lupus Erythematosus, Dorcey Lanier Applyrs

Legacy Theses & Dissertations (2009 - 2024)

Systemic Lupus Erythematosus has profound effects on women, families and society causing a loss of self-esteem, a loss in earning potential and higher health care costs. SLE affects women during their most productive years of life, causing women to further experience particularly poor health-related quality of life (HRQoL) as well as financial hardship. The purpose of this study is to investigate the associations among corticosteroid use, emotional and physical health, and work and regular daily activities in a racially-and ethnically-diverse sample of women with SLE and controls using data from the Medical University of South Carolina (MUSC) Lupus Database. This …

Atrazine In Maternal Drinking Water Supply Below The Federal Maximum Contaminant Level And Risk Of Preterm Birth, Small For Gestational Age, Cryptorchidism And Hypospadias, Daniel Rice

Legacy Theses & Dissertations (2009 - 2024)

The prevalence of preterm birth, small for gestational age (SGA), and hypospadias has been increasing for several decades in the U.S resulting in significant morbidity and mortality and direct costs to society. Drinking water provides a mechanism for prolonged chronic exposure to environmental contaminants but is one of the least assessed environmental exposures in pregnancy and birth outcomes. To test the hypothesis that maternal exposure to atrazine through drinking water during pregnancy, or one or more trimesters of gestation, is associated with an increased risk of preterm birth, small for gestational age, cryptorchidism and hypospadias a retrospective cohort study was …

An Evaluation Of Factors Leading To The Risk And Detection Of Thyroid Cancer, Thomas James O'Grady

Legacy Theses & Dissertations (2009 - 2024)

Abstract:

Medication Use And Patients Co-Infected With Human Immunodeficiency Virus And Hepatitis C Virus : Quantifying The Prevalence And Identifying The Predictors Of Clinically Significant Drug-Drug Interactions Associated With Therapy Containing First Generation Non-Structural 3a Serine Protease Inhibitors, Nimish Patel

Legacy Theses & Dissertations (2009 - 2024)

This dissertation enhances our understanding of clinically significant drug-drug interactions (CSDDIs) and contraindicated drug interactions among patients with human immunodeficiency virus (HIV) and hepatitis C virus (HCV) coinfection before and after the addition of HCV therapy including first generation non-structural (NS) 3A serine protease inhibitors. This is important to understand because the clinical sequelae of untreated chronic HCV infection are devastating yet drug-drug interactions greatly complicate treatment for these patients. The HIV/HCV coinfected population is a population that is particularly vulnerable because they are using a high volume of medications. Specifically, the standard of care for patients with HIV infection …

Paternal Occupational Pesticide Exposure And Neural Tube Defects In The National Birth Defects Prevention Study, Stacy Marie Pettigrew

Legacy Theses & Dissertations (2009 - 2024)

ABSTRACT

Exposure Assessment And Risk Management Of Engineered Nanoparticles : Investigation In Semiconductor Wafer Processing, Michele Shepard

Legacy Theses & Dissertations (2009 - 2024)

Engineered nanomaterials (ENMs) are currently used in hundreds of commercial products and industrial processes, with more applications being investigated. Nanomaterials have unique properties that differ from bulk materials. While these properties may enable technological advancements, the potential risks of ENMs to people and the environment are not yet fully understood. Certain low solubility nanoparticles are more toxic than their bulk material, such that existing occupational exposure limits may not be sufficiently protective for workers. Risk assessments are currently challenging due to gaps in data on the numerous emerging materials and applications as well as method uncertainties and limitations.

Sleep Duration And Diabetes In An Adult Population Of Rural Upstate New York, Tarak Shrestha

Legacy Theses & Dissertations (2009 - 2024)

Introduction: Within the past five decades, there has been a rapid increase in the number of diabetic cases in the US. The number of diabetic cases increased from 1.5 million in 1959 to 25.8 million in 2011. Around the same time period, the average sleep duration per night decreased from 8 hours to 6.9 hours.

Perfluorinated Compounds, Thyroid Function, And Neuropsychological Status In Older Residents Of Upper Hudson River Communities, Srishti Shrestha

Legacy Theses & Dissertations (2009 - 2024)

Perfluorinated compounds (PFCs) are widespread in the environment. Minimal data exist regarding the neurotoxicity and thyroid disruptive property of PFCs in aging populations and the possible mediating effects of thyroid hormones (THs). In this study, we assessed associations among PFCs, thyroid function, and neuropsychological status, and determined if the neurotoxic effects of PFCs are mediated by changes in THs in an aging population. We measured perfluorooctanoic acid (PFOA), perfluorooctane sulfonate (PFOS), thyroid stimulating hormone (TSH), total thyroxine (T4), free T4 (fT4), and total triiodothyronine (T3) in serum and performed neuropsychological tests in men and women aged 55-74 years and living …

Maternal Characteristics And Factors Associated With Hepatitis C (Hcv) Infection Among Hiv-Positive Pregnant Women In Ukraine, 2010-2011, Liudmyla Slobodianyk

Legacy Theses & Dissertations (2009 - 2024)

Objective: Determine the association between risk factors for Hepatitis C and hepatitis C (HCV) infection among HIV-positive pregnant women in Ukraine.

A Population-Based Case-Control Study Of The Association Between Extreme Heat Events And Neural Tube Defects And Oral Clefts, Aida Soim

Legacy Theses & Dissertations (2009 - 2024)

With climate change it is expected that extreme weather events will become more frequent and longer in duration. The health consequences of maternal exposure during pregnancy to extreme heat events are not well understood in spite of biological plausibility for adverse effects suggested by prior findings. There is very limited research that explores the relationship between extreme heat events and birth defects. The overall goal of this line of research was to determine whether heatwaves (HW) are associated with two major classes of birth defects: neural tube defects (NTDs) and oral clefts. One component of this project aimed to describe …

Sex Work And Daily Alcohol Use May Increase Hiv Risks Of Women Who Inject Drugs In Ukraine, Tetyana Vasylyeva

Legacy Theses & Dissertations (2009 - 2024)

Background: Between 10 - 50% of female PWID in former USSR countries, where HIV epidemics are driven by injecting drug use, are reported to exchange sex for money, drugs or goods. Research in the region shows contradictory data on the association between exchange sex and HIV for PWID, and suggests that this association might be influenced by other factors. Since female PWID who exchange sex might be a bridge population between PWID and other people, it is important to monitor their risks and suggest timely interventions.

Disparities Among Hispanic Ethnicity And Stage At Diagnosis For Invasive Breast And Colorectal Cancer, Raquel Velazquez

Legacy Theses & Dissertations (2009 - 2024)

Objective: To assess the relationship between ethnicity and stage at diagnosis among invasive cases of breast and colorectal cancer.

Examining The Risk And Protective Factors That Influence Falls Among Native American Older Adults, Kelly Winjum

Legacy Theses & Dissertations (2009 - 2024)

The risk factors for falls and the adverse outcomes of falls have been well documented among the general older adult population. However, fall frequency, fall risk factors, and fall outcomes have rarely been studied among minority groups specifically. Furthermore, to date there are no known studies that exclusively examine falls among Native American older adults. The purpose of this study is to examine falls among Native American older adults, in order to understand the risk and protective factors for falling among this population, and to develop recommendations for intervention. The theoretical framework of the Disablement Process guides this study. The …

Breast Cancer Susceptibility : An Education Intervention And Genetic Epidemiology Study, Nur Zeinomar

Legacy Theses & Dissertations (2009 - 2024)

Background: Breast cancer is the most frequently diagnosed cancer (aside from non-melanoma skin cancers) and the second leading cause of cancer deaths among women in the United States. Our studies aimed to assess the effectiveness of a breast cancer educational intervention and to investigate genetic influences on the risk of post-menopausal breast cancer. The overarching theme and public health relevance of this dissertation was that our findings provided leads for breast cancer prevention.

Predictors Of Emergency Room And Hospital Utilization Among Adults With Intellectual And Developmental Disabilities (Idd) In New York City, Meghan G. Blaskowitz

Legacy Theses & Dissertations (2009 - 2024)

Background. Avoidable emergency room (ER) visits and hospital admissions among people with intellectual and developmental disabilities (IDD) contribute significantly to rising Medicaid costs. The Affordable Care Act (ACA) and New York State (NYS) Medicaid Redesign Team have identified a critical need to reduce ER and hospital utilization in an effort to contain healthcare costs and improve quality of care. Study Objective. This study identifies independent predictors of medical and behavioral/psychiatric ER and hospital utilization for a cohort of individuals with IDD (n=597) residing in supported living arrangements in New York City, the most Medicaid-dense region of NYS. Methods. A retrospective …

Relationships Between Breastfeeding, Maternal Cigarette Smoking During Pregnancy, And The Cognitive Functioning Of Akwesasne Mohawk Adolescents Exposed To Environmental Pollution, Georgia Brooke

Legacy Theses & Dissertations (2009 - 2024)

Previous research has suggested that breastfeeding is beneficial for children's health and that maternal cigarette smoking during pregnancy is harmful for children's health. However, there is not a consensus in the existing literature about whether or not these two maternal behaviors impact the cognitive development of children. Furthermore, understanding the role of breastfeeding in children's development is complicated by the fact that breastfeeding transmits toxicants that are stored in the mother's body, including polychlorinated biphenyls (PCBs), to the infant. Existing research suggests that PCBs negatively impact children's cognitive functioning. The current study examined relationships between breastfeeding, maternal cigarette smoking during …

Mental Health Service Utilization Among People With Mental Illness : An Examination Of Predictors And The Influence Of Substance Abuse And Hiv, Man-Chun Chang

Legacy Theses & Dissertations (2009 - 2024)

Many people who could benefit from mental health services do not receive them. The objective of this study is to use nationally representative data to systematically investigate correlates of types of mental health treatments and examine the interaction effects between self-perceived treatment need and demographic characteristics.

Molecular Actions Of The Novel Histone Deacetylase Inhibitor Cg-1521 In Models Of Inflammatory Breast Cancer, Namita Chatterjee

Legacy Theses & Dissertations (2009 - 2024)

Inflammatory breast cancer (IBC) is a rare and particularly lethal form of breast cancer. Despite aggressive therapeutic approaches, the 5-year survival rate is only 34%. As this disease is severely understudied, we have investigated the therapeutic potential of the novel hydroxamic acid-derived histone deacetylase inhibitor (HDACi), CG-1521 in comparison to a structurally similar compound, Trichostatin A (TSA) in two IBC cell lines: SUM149PT and SUM190PT. In these cells, CG-1521 and TSA induce dose- and time-dependent induction of cell cycle arrest and apoptosis regardless of the presence of 17β-estradiol (E2). Interestingly, the cell lines have considerably different sensitivities to these treatments …

Novel Partner Notification Approaches In New York State, And Antibiotic Resistance In The Management Of Chlamydia Trachomatis Infections, Christopher Frank Davis

Legacy Theses & Dissertations (2009 - 2024)

Chlamydia trachomatis (chlamydia) is the most frequently reported notifiable disease in the United States. This dissertation provides an evaluation of chlamydia treatment and control through three different lenses: 1) patient views on a novel strategy to facilitate treatment, 2) student perceptions about materials to promote treatment of sexual partners, and 3) evidence regarding recurrent infection etiology.

Influenza Hospitalizations In New York State 2007-2013 : Impact Of Vaccine And Antiviral Treatment Effectiveness In Reducing Severity Of Illness, Mary Dundas

Legacy Theses & Dissertations (2009 - 2024)

Background: Underlying medical conditions are known risk factors for increased severity of infectious diseases, including influenza. Although most studies on disease severity, underlying medical conditions, and prevention/treatment effectiveness occurred during the pandemic 2009-2010 season, data is also available for seasons when influenza virus B and influenza virus A subtypes pH1N1, seasonal H1N1, and H3N2 were circulating.

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.

Psychological Features Of Abstinent Heroin Users And Predictors Of Their Improvement During Rehabilitation In Saint-Petersburg, Russia, Timofey Galankin

Legacy Theses & Dissertations (2009 - 2024)

Objective: Find predictors of adherence to post-detoxification rehabilitation programs in opiate intravenous drug users (IDUs) in Russia. Assess whether longer-term rehabilitation programs improve participants' psychological profiles more than shorter-term ones.

Adoption And Implementation Of Alcohol And Drug Screening, Brief Intervention, And Referral To Treatment (Sbirt) In School-Based Health Centers : Provider Knowledge, Attitudes, And Perceptions As Barriers And Facilitators, Brett Harris

Legacy Theses & Dissertations (2009 - 2024)

Background: Screening, Brief Intervention, and Referral to Treatment (SBIRT) has been endorsed by the American Academy of Pediatrics as an evidence-based strategy to address risky substance use among adolescents in primary care settings. However, less than half of pediatricians even screen adolescents for substance use.

A Mixed Methods Study Of Shared Epistemic Agency In Team Projects In An Online Baccalaureate Nursing Course, Suzanne Hayes

Legacy Theses & Dissertations (2009 - 2024)

This study explores the role of instructional design in the development of shared epistemic agency (SEA) when RN to BSN nursing students collaborate to complete a team project in an online course. Paavola & Hakkarainen's (2005) trialogical model of learning is used to design a learning activity where teams create a shared knowledge object, a co-authored patient interprofessional care plan to support group knowledge creation. The study addresses the following research questions:

Predictors Of Attrition Among Participants In A Worksite Wellness Program, Yvonne A. Johnston

Legacy Theses & Dissertations (2009 - 2024)

Objectives: The purpose of this secondary data analysis was to examine "stage of change" as a predictor of attrition among participants in a worksite wellness program. A Conceptual Model of Attrition was developed to examine health screening, health risk appraisal (HRA), and demographic predictors of attrition as well.