Environmental Public Health Commons^™

Environmental Exposures And Aging., Daniel Chris Gomes

Electronic Theses and Dissertations

In recent years, research into air pollution has shown that exposure to certain components in air pollution, primarily PM2.5 can accelerate biological aging and thereby lead to increased susceptibility to multiple diseases. We hypothesize that prolonged exposure to air pollutants can result in premature aging leading to extensive tissue dysfunction and susceptibility to diseases. To examine this, we exposed mice to PM2.5 for 9, 15, and 21 days, then measured the telomere lengths, cellular senescence, and histone methylation patterns of multiple cell types. We found consistently increased telomere attrition, cellular senescence and advanced age-consistent histone methylation patterns in groups exposed …

Investigation Of Orthohantavirus Genetics In Rodent Reservoirs And Clinical Samples, Samuel M Goodfellow

Biomedical Sciences ETDs

Orthohantaviruses are negative-sense, single stranded RNA viruses with trisegmented genomes that can cause severe disease in humans and are carried by several host reservoirs throughout the world. In the United States, Sin Nombre orthohantavirus (SNV) is the primary cause of hantavirus cardiopulmonary syndrome (HCPS) with a fatality rate of ~36% and the highest cases occuring in the southwest region. The primary SNV host reservoir is thought to be the western deer mouse, Peromyscus maniculatus, however it has been shown that other rodents can carry different orthohantaviruses. We designed a pan-orthohantavirus detection tool to survey several small mammal populations throughout New …

Clinical And Environmental Factors Affecting The Survival Outcomes Among Stage 1a Tn0m0 First Primary Non-Small Cell Lung Carcinoma Patients In The United States., Naiya Patel

Electronic Theses and Dissertations

Background: Lung cancer is the second leading cause of death in the United States (U.S.). The most prevalent histological type of lung cancer is Non-Small Cell Lung Cancer (NSCLC), which has an overall five years survival of 5% if left untreated. Therefore, early treatment of NSCLC is vital to improve overall survival (OS) outcomes. Several factors affect survival outcomes, which can be categorized as modifiable or non-modifiable. The difference in timely receipt of guideline-concordant treatment affects the survival outcomes of patients with stage 1A NSCLC. This dissertation explored factors that affect treatment and survival outcomes among stage 1A NSCLC patients …

The Effect Of An Educational Handout On Knowledge, Awareness And Attitudes Of Pre-Exposure Prophylaxis (Prep) Among Participants At A Needle And Syringe Exchange Site, Mckenzie Buckel

DNP Projects

Background: In 2018, the total number of HIV cases in the United States was 1.2 million. Almost 186,500 of these cases were attributed to intravenous drug use. With the adherence to pre-exposure prophylaxis (PrEP) there is approximately a 49% decrease in the rates of HIV among people who inject drugs and the most significant barrier to PrEP among this population is a lack of awareness and knowledge.

Objective: The purpose of this study was to determine participants’ of a needle and syringe exchange site knowledge, awareness and attitudes of PrEP after reviewing an educational handout about PrEP.

Methods: A quasi …

Identification Of Novel Biosynthetic Gene Clusters Encoding For Polyketide/Nrps-Producing Chemotherapeutic Compounds From Marine-Derived Streptomyces Hygroscopicus From A Marine Sanctuary, Hannah Ruth Flaherty

Honors Theses and Capstones

Nearly one out of six deaths in 2020, around ten million people, were caused by cancer, making it a leading cause of death worldwide (WHO, 2022). This major public health issue, in addition to the rise of multidrug-resistant (MDR) pathogens, provides a high demand for the discovery of new pharmaceutical drugs to be used clinically to treat these conditions. The Streptomyces genus accounts to produce 39% of all microbial metabolites currently approved for human health, indicating its potential as an important species to study for antimicrobial and anticancer agents. The long linear genome of Streptomyces contains specialized sequences known as …

Species Data And Vector Modeling: Evaluating Datasets For Improved Models Of Ixodes Ricinus Tick Distribution In Europe Under A Changing Climate, Steven Jones

Electronic Theses and Dissertations

To increase capacity for monitoring and surveillance of tick-borne diseases, publicly available tick distribution and climate change datasets are required to create accurate predictive distribution models. It is difficult, however, to assess model accuracy and utility when using incomplete datasets.  The more recent development of comprehensive tick databases for Europe and availability of climate change scenarios from multiple IPCC Assessment Reports allows for improved modeling efforts. Multiple tick datasets were combined and three climate change projections were compared by predicting current and future distributions of Ixodes ricinus ticks in Europe using the MaxEnt species distribution model. Overall, much of Europe …

Interplay Of Environmental Pollutants And Folate In The Etiology Of Autistic Traits Analysis Using Multipollutant Approaches, Michael T. Mascari

Doctoral Dissertations

Background: Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder characterized by a spectrum of communication deficits and repetitive behaviors. The challenges in learning, thinking, and problem-solving abilities of people with ASD can be debilitating. There is currently no cure for ASD. Many environmental pollutants are suspected to contribute to the etiology of ASD and its associated traits, whereas folate and folate supplements have been shown to exhibit both protective and adjuvant roles. Little is known about the interplay of multiple environmental pollutants and folate in the etiology of ASD. Additionally, statistical approaches that consider the effects of pollutant mixtures instead …

Environmental Exposures And Human Health Challenges: Evidence-Based Insights From Health Surveillance Systems, Jagadeesh Puvvula

Theses & Dissertations

Human exposure to environmental hazards is associated with a variety of preventable adverse health outcomes. As the environmental health risks result from the complex interaction between hazard, exposure, and susceptibility, these exposure-outcome associations are heterogeneous across the population. Improving environmental health literacy by advocating evidence-based environmental risk communication could play a role in reinforcing protective behavior against environmental hazards. The use of public health surveillance systems to assess the exposure-response associations is one of the effective ways to quantify the environmental health risks. However, there are several gaps in effectively quantifying environmental health risks. This dissertation aims to address a …

The Relationship Between Pm2.5 And Chronic Respiratory Disease In Senegal, Bailey Glenn

Masters Theses

Chronic respiratory diseases such as asthma and chronic bronchitis have significantly increased in prevalence in Africa over the past 10 years. Recent studies have demonstrated that exposure to air pollution may be associated with an increased risk of chronic respiratory diseases. However, such studies have predominantly been conducted in western societies or often used urbanicity as a proxy for exposure to air pollution. Therefore, we evaluated the association between PM_2.5 exposure and asthma/chronic bronchitis in Senegal. A cross-sectional study was conducted for the time period of 3 October 2010 to 28 April 2011 using annual concentrations of PM_{2.5 …}

How Environmental Change Will Impact Mosquito-Borne Diseases, Arsal Khan

Master's Projects and Capstones

Mosquitos, the most lethal species throughout human history, are the most prevalent source of vector-borne diseases and therefore a major global health burden. Mosquito-borne disease incidence is expected to shift with environmental change. These changes can be predicted using species distribution models. With the wide variety of methods used for models, consensus for improving accuracy and comparability is needed. A comparative analysis of three recent modeling approaches revealed that integrating modeling techniques compensates for trade-offs associated with a singular approach. An area that represents a critical gap in our ability to predict mosquito behavior in response to changing climate factors, …

An Ecological Study Of Glyphosate Use And Non-Hodgkin’S Lymphoma, Dexter Corlett, Steven R. Browning

Theses and Dissertations--Public Health (M.P.H. & Dr.P.H.)

Glyphosate is currently the most widely used herbicide in the world. Initially thought to be non-carcinogenic in humans, in 2015 glyphosate was classified as a “probable carcinogen” by the International Agency for Research on Cancer due to several small epidemiological studies indicating a link between the pesticide and hematologic cancers, especially non-Hodgkin’s lymphoma (NHL). The current work is an ecological study using counties in Kentucky, Arkansas, and Iowa to compare glyphosate usage to NHL incidence using a multivariate Poisson regression. We found no significant correlation between glyphosate use and NHL incidence, though caution should be taken to draw significance from …

Ecology Of Hantaviruses In Rodent Reservoirs And Their Early Innate Immune Responses In Human Model Systems, Evan Peter Williams

Theses and Dissertations (ETD)

The spillover of zoonotic RNA viruses is responsible for a great deal of the disease outbreaks in human populations. These spillover events are set to continue due to anthropogenic and environmental changes that impact the distribution of these viruses. The viruses in the family Hantaviridae are classified as one of these emerging zoonotic RNA viruses. The spillover of the viruses in this family are responsible for two severe human diseases, hemorrhagic fever with renal syndrome (HFRS) and hantavirus pulmonary syndrome (HPS). These viruses are distributed across the globe and are responsible for a large number of human disease cases with …

High-Dimensional Feature Selection And Multi-Level Causal Mediation Analysis With Applications To Human Aging And Cluster-Based Intervention Studies, Hachem Saddiki

Doctoral Dissertations

Many questions in public health and medicine are fundamentally causal in that our objective is to learn the effect of some exposure, randomized or not, on an outcome of interest. As a result, causal inference frameworks and methodologies have gained interest as a promising tool to reliably answer scientific questions. However, the tasks of identifying and efficiently estimating causal effects from observed data still pose significant challenges under complex data generating scenarios. We focus on (1) high-dimensional settings where the number of variables is orders of magnitude higher than the number of observations; and (2) multi-level settings, where study participants …

Exploring Social Determinants Of Covid-19 Related Sickness And Suffering In The Bronx, Hamida Chumpa

Student Theses and Dissertations

Through a positivistic and phenomenological approach, the study examines social determinants of COVID-19 related sickness and suffering in the Bronx, New York City, New York, ZIP codes 10462, 10472, 10467, 10458, 10474, and 10464. I utilize a violence paradigm (structural and everyday violence) to describe the social determinants of risk and sickness-related suffering and deploy an assemblage framework to shed light on how these determinants create negative synergies that undermine wellbeing and render certain communities vulnerable to extreme suffering. The mixed methods include 64 surveys and eight interviews. Analysis methods include a descriptive analysis of survey results and a thematic …

Association Between Air Pollution And Incidence Of Dementia: A Systematic Review And Meta-Analysis Of Cohort Studies, Ehsan Abolhasani

Electronic Thesis and Dissertation Repository

Objective. To estimate the risk of dementia in association with exposure to air pollutants.

Methods. Six databases were searched. Cohort studies that reported the hazard ratio (HR) of dementia in association with exposure to air pollutants in adults > 40y were included. For all meta-analyses, the random-effects model was used.

Results. A total of 16 and 13 studies were included in the systematic review and the meta-analysis, respectively. Risk of dementia increased by 4% per 1μg/m³ increase in fine particulate matter level (HR, 1.04; 95%CI, [1.02, 1.06]), which was statistically significant. The risk of dementia increased by 3% per 10μg/m …

Environmental Respiratory Exposures And Pulmonary Function Among Residents Of Rural Appalachia, Kentucky, John C. Flunker

Theses and Dissertations--Epidemiology and Biostatistics

Introduction

Resource extraction exposures are hypothesized to promote adverse respiratory health outcomes among residents of rural Appalachia, yet no studies to date have simultaneously quantified small-scale geographic variation in residential exposure, individual level health factors, and respiratory health outcomes.

Methods

The Mountain Air Project (MAP) is a community engaged cross-sectional study based in Harlan and Letcher counties of Southeastern Kentucky. MAP utilized a novel small-scale method to define residential exposure boundaries: hydrologic unit code (HUC), which represents distinct drainages (AKA “hollows”) where residents cluster. We assigned the HUC level density of active and abandoned surface and underground mining, oil/gas wells, …

An Assessment Of Kentucky Birth Records, Focusing On Early-Onset Hypertensive Disorders Of Pregnancy, Environmental Metal Exposures, And Geocoding Precision, 2008-2017, Courtney J. Walker

Theses and Dissertations--Epidemiology and Biostatistics

Using live and stillbirth records from Kentucky (2008-2017), this dissertation assessed the county-level prevalence and geospatial patterns of early-onset hypertensive disorders of pregnancy (eHDP); examined the geocoding precision of addresses recorded on birth records, and evaluated the association between individual risk factors and environmental metal exposures on eHDP prevalence. After adjusting for maternal demographic factors and pre-existing health conditions, we observed that eHDP prevalence was 38% higher (aPR=1.38, 95%CI:1.16, 1.64) in counties with the highest prevalence of married women (> 53.8%) compared to lower prevalence areas (31.6%) had a 20% higher prevalence of eHDP(aPR=1.20, 95%CI:1.00, 1.44) compared to counties with …

Maternal Proximity To Mountaintop Removal Mining And Birth Defects In Appalachian Kentucky, 1997-2003, Daniel B. Cooper

Theses and Dissertations--Public Health (M.P.H. & Dr.P.H.)

Background: Extraction of coal through mountaintop removal mining (MTR) alters many dimensions of the landscape, and explosive blasts, exposed rock, and coal washing have the potential to pollute air and water with substances known to increase risk of developmental and birth anomalies. Previous research suggests that infants born to mothers living in MTR coal mining counties have higher prevalence of most types of birth defects.

Objectives: This study seeks to examine further the relationship between MTR activity and birth defects by employing individual level exposure estimation through precise satellite data of MTR activity in the Appalachian region and maternal residence …

Evaluating The Incidence Of Melanoma And Lung Cancer Of Current And Former Active-Duty U.S. Military Who Were Deployed In Support Of Operation Enduring Freedom And Operation Iraqi Freedom, Brian Kovacic

Theses and Dissertations--Epidemiology and Biostatistics

The incidence of melanoma and lung cancer has been gradually increasing in the United States over the past three decades with the reputed causes due to etiological and environmental exposures, and tobacco usage. There has been concern that melanoma and lung cancer incidence among military personnel may be associated with deployment to environments with intense sun exposure and increased smoking rates due to post-traumatic stress disorder. The aim of this study was to examine associations between deployment in support of Operation Enduring Freedom (OEF) or Operation Iraqi Freedom (OIF), from 2001 through 2015, with subsequent melanoma and lung cancer incidence. …

Plasma Proteins That May Cause Parkinson’S Disease And Multiple Sclerosis: A Mendelian Randomization Study, Brigid A. Staley

Dissertations and Theses

Multiple sclerosis (MS) and Parkinson’s disease (PD) are progressively disabling neurologic disorders that profoundly affect quality of life and shorten life expectancy. There is no cure for either disease, and current treatments only alleviate symptoms and may cause serious side effects. The causes of MS and PD are not well understood. Previous epidemiologic studies have documented numerous environmental risk factors for both diseases. However, these studies are inherently prone to bias from confounding which may generate spurious results. The lack of unbiased evidence on environmental causes of MS and PD has been a critical barrier to fully understanding their pathophysiology. …

Assessing Conduct Disturbance And Fly Ash Exposure In Children., Jillian G. Winn

College of Arts & Sciences Senior Honors Theses

Minimal research has been conducted on fly ash (a byproduct of coal combustion) and health outcomes among exposed communities, and even less has looked at its effect on children’s behavior. This study specifically looks at fly ash exposure and conduct disturbance, using logistic regression to characterize their relationship. Conduct disturbance was gauged by t-scores of 55 or higher on the dimensions of aggression and delinquency of the Child Behavior Checklist. Fly ash exposure was determined by air and surface sampling of the children’s homes. While the odds ratios suggested fly ash exposure increases the likelihood of conduct disturbance, the results …

Association Of Perfluorinated Chemicals With Endocrino-Carcinogenetic, Obesogenic And Metabolic Health And With Markers Of Chronic Inflammation And Oxidative Stress, Ogbebor Enaholo Omoike

Electronic Theses and Dissertations

First, this study examined the association of perfluorinated chemicals with 1) cardio-metabolic health outcomes and 2) the association of phthalates with cardiometabolic health outcomes, and 3) cardio-metabolic health outcomes while assessing the possibility of additive interactions between perfluorinated chemicals (PFCs) and phthalates. Second, association with markers of chronic inflammation and oxidative stress were explored. Finally, this study examined the association of these chemicals with estrogenic cancers- Breast cancer, prostate cancer, uterine cancer and ovarian cancer.

Using data from the National Health and Nutrition Examination Survey (NHANES), logistic regression models were used to investigate the relationship between PFCs and the cardio-metabolic …

The Presence Of Legionellae In Respiratory Devices: Convenience Sampling Of Idaho Long Term Care Facilities, Andrew Nutting

Boise State University Theses and Dissertations

Legionella is a bacterium found naturally in moist environments. Persons can become infected when they inhale airborne droplets of water containing such bacteria. Legionellosis cases associated with the use of respiratory devices such as Continuous Positive Airway Pressure (CPAP) units, jet nebulizers, portable room humidifiers, and respiratory ventilation equipment have been identified in context of a Legionellosis outbreak. However, a systematic search for the presence of Legionella bacteria in respiratory devices outside of a Legionellosis outbreak has not been reported. The goal of this study was to carry out such a survey on different types of respiratory devices in long …

Tobacco Smoke Exposures And Fertility-Related Outcomes Among Females Seeking Fertility Care, And The Interaction With N-Acetyltransferase 2 (Nat2).., T'Shura S. A. Ali

Electronic Theses and Dissertations

Cigarette smoke contains thousands of harmful substances and is one of the leading preventable causes of mortality and morbidity in the United States. Past studies examining tobacco smoke exposures on fecundability and pregnancy outcomes are inconsistent. NAT2 is an important enzyme in the metabolism of xenobiotic substances found within tobacco smoke. This preconception cohort study examines associations between active smoking and secondhand smoke exposure (SHSe) on fecundability and spontaneous abortion (SA), and explores a possible interaction with NAT2 acetylator status. A total of 223 women seeking fertility care were followed for up to 2.3 years. Preconception tobacco smoke exposures were …

Air Pollution & Asthma Prevalence: Hotspot Analysis On Environmental Injustice In Buffalo, New York, Zuveria Shaguphta

Graduate Dissertations and Theses

This research aims to focus on the historical impacts of segregation in these communities (with Census Bureau data) and whether we see that these are the areas with continued segregation and a disproportionate number of TRI facilities. The third part of this research will be to investigate the presence of asthma in these neighborhoods as documented by the New York State Health Department. Asthma is a chronic disease in which the airways are inflamed due to some kind of external factor causing this reaction. Literature shows that there is a relationship between outdoor air pollution from combustion of fossil fuels …

Using Syndromic Surveillance To Assess The Impact Of Environmental Factors On Asthma- And Copd- Related Ed Visits In Douglas County, Nebraska, Sandra Gonzalez-Ramirez, Anne Mardis O'Keefe, Tricia D. Levan, Lynette Smith

Capstone Experience

Background: Asthma and chronic obstructive pulmonary disease (COPD) are chronic diseases associated with health disparities in Douglas County, Nebraska and in the United States. Currently there is a lack of information describing the impact of environmental factors in Nebraska on the burden of emergency department (ED) visits or hospitalizations related to these chronic respiratory (CR) diseases. The aim of this study was to determine if there is an association between the numbers of seasonal viral respiratory (SVR)- related ED visits, outdoor air pollutants, aeroallergens, or meteorological factors on the number of CR- related ED visits in Douglas County, Nebraska.

Methods: …

The Association Between Melanoma And Exposure To Arsenic Among U.S. Adults Using The National Health And Nutrition Examination Survey (Nhanes) From 2003 To 2016, Ahmed Bedaiwi

Capstone Experience

Background: Melanoma is a deadly skin cancer at late stages, and its incidence has been increasing significantly over the last ten years in the United States. Chronic exposure to arsenic has been associated in many studies as a risk factor for non-melanoma skin cancer, notably squamous cell carcinoma. However, current knowledge is limited regarding melanoma and long-term arsenic exposure.

Methods: We conducted a cross-sectional study using the 2003-2016 cycles of the National Health and Nutrition Examination Survey (NHANES), to investigate the association between arsenic exposure and self-reported melanoma and non-melanoma skin cancer diagnoses. Univariate and multivariate logistic regressions were conducted. …

Heat Waves And Heat-Related Mortality In East Tennessee, Taiwo Adesoba

Electronic Theses and Dissertations

Heat waves represent a public health challenge that requires multiple responses and warnings to protect vulnerable populations. Although studies have reported an increasing trend of heat wave occurrence in many areas of the world, no clear trend exists in East Tennessee. Using data from Parameter-elevated Relationships on Independent Slope Models (PRISM), CDC WONDER and the United States Census Bureau, the relationship between mortality rates and year was estimated during heat wave events between 1999 and 2010. Five heat wave definitions were tested. Overall, 2007 and 2010 stand out as the years with the highest number of heat wave days in …

Public Health Policy: An Ethical Analysis Of Quarantine, Dina Alqahtani

Electronic Theses and Dissertations

As a public health measure quarantine has both historical and contemporary significance both in the United States and abroad. On the surface it represents a low-cost, low-tech way in which the spread of disease can be mitigated as its core requirement is that those who may have been exposed to an infectious agent are kept away from those who have not been exposed to that agent for enough time to determine whether or not infection has been spread. This has been utilized for centuries with both limited questions and scattered, inconsistent, or impossible to achieve oversight and goals. In understanding …

Estimating Causal Effects In The Presence Of Spatial Interference, Keith W. Zirkle

Theses and Dissertations

Environmental epidemiologists are increasingly interested in establishing causality between exposures and health outcomes. A popular model for causal inference is the Rubin Causal Model (RCM), which typically seeks to estimate the average difference in study units' potential outcomes. If the exposure Z is binary, then we may express this as E[Y(Z=1)-Y(Z=0)]. An important assumption under RCM is no interference; that is, the potential outcomes of one unit are not affected by the exposure status of other units. The no interference assumption is violated if we expect spillover or diffusion of exposure effects based on units' proximity to other units and …