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Articles 1 - 14 of 14
Full-Text Articles in Life Sciences
The Experience Of Homelessness And Its Effects On Gut Eubiosis, Kamerin Villagomez
The Experience Of Homelessness And Its Effects On Gut Eubiosis, Kamerin Villagomez
University Honors Theses
Microorganisms which populate the human gastrointestinal tract (GIT) have a profound effect on overall human health. The relationship between host health and eubiosis, or balance, of the GIT microbiome is symbiotic and can have reciprocal relationships with quality of sleep, quality of diet, stress and mental health, and the experience of pain. These specific aspects of health are unique in populations experiencing homelessness due to the multi-dimensional and complex nature of their lived experience. Very few studies explore populations experiencing homelessness, with even fewer investigating the intersection between this population and the human GIT microbiome. It is important to do …
Construction And Mutagenesis Of Ssv1 Mutants In Extreme Viruses, Lou Ann F. O'Connor, Jono Abshier, Kenneth M. Stedman
Construction And Mutagenesis Of Ssv1 Mutants In Extreme Viruses, Lou Ann F. O'Connor, Jono Abshier, Kenneth M. Stedman
Student Research Symposium
Archaeal viruses with unique structures such as spindle-shaped virions are found abundantly in extreme environments like geothermal hot springs around the world. Among all spindle-shaped viruses, the model Sulfolobus Spindle-shaped Virus 1 (SSV1) is best studied. Creating the lemon-shaped or spindle-shaped virion structure are two proteins, VP1 as the major capsid protein, and VP3 as the minor capsid protein. The primary structure of VP1 consists of a proteolytic cleavage site at position 66 that is believed to be necessary for virus evolution. Recent studies showed that genetic mutation of the amino acid, glutamate (E) at position 66 in VP1 which …
Let Kids Sleep: The Role Of Interdisciplinary Neuroscience Outreach In Stimulating Brains And Developing Research-Informed Approaches To Community Concerns, Marc Chenard
University Honors Theses
Northwest Noggin (NW Noggin), an all-volunteer neuroscience education outreach non-profit, serves its community by bringing students, artists, scientists and other participants together for artistic collaboration and learning. The outreach takes place in K-12 schools and other institutions (such as museums, coffee shops and correctional facilities) all over the Pacific Northwest. Neuroscience education outreach generates discourse surrounding community concerns through illuminating the brain-centric qualities of issues and by drawing on neuroscience research to create solutions. The neuroscience research-informed perspectives on these concerns stimulate awareness, create momentum towards evidence-based reform, and can result in policy interventions. This thesis details how NW Noggin …
The Influence Of Microorganisms On Human Health, Tiffany Bui
The Influence Of Microorganisms On Human Health, Tiffany Bui
University Honors Theses
The purpose of this thesis is to explore the interplay between the environment, lifestyle, and composition of human microbiomes across different communities, with a specific focus on immune and digestive health. This literature review investigates three distinct types of communities: isolated/traditional, transitional, and urban/industrialized communities, each characterized by unique environments, societal structures, and interactions. These factors contribute to the distinct microbial populations and compositions within each community. It is impossible to avoid contact with microorganisms as they are present in every aspect of our lives, from the air we breathe, the water we drink, the soil we walk on, the …
Map The System: Presence And Impact Of Ppcps In Water, Emma Vandermeulen, Ruby Mitchell
Map The System: Presence And Impact Of Ppcps In Water, Emma Vandermeulen, Ruby Mitchell
OHSU-PSU School of Public Health Annual Conference
In a changing climate, there is growing emphasis on protecting our water sources and developing systems for conserving and reusing water. While many contaminants of concern are monitored and addressed by water treatment systems, pharmaceuticals and personal care products (PPCPs) are generally not accounted for. PPCPs in water systems have been an increasing concern as detection of these products has increased over the last few decades. Studies have been exploring the impact of antibiotics, antidepressants, contraceptives, and other anthropogenic products on our water system and how these substances interact with local ecosystems. Our main research questions are to understand what …
Understanding The Transport And Chemistry Of Indoor Air During Wildfire Smoke Events With Elliott Gall, Elliott T. Gall
Understanding The Transport And Chemistry Of Indoor Air During Wildfire Smoke Events With Elliott Gall, Elliott T. Gall
PDXPLORES Podcast
Dr. Elliott Gall, Associate Professor in the Mechanical and Materials Engineering Department at Portland State University, studies indoor air quality in order to better understand how to improve building designs to promote health.
Wildfires are increasing in frequency and intensity. So, too, are wildfire smoke events. Smoke from wildfires pose serious health risks. That is why the Environmental Protection Agency recommends individuals remain indoors during smoke events.
In this episode, Professor Gall discusses the importance of understanding the chemistry of wildfire smoke indoors and how smoke is transported into buildings.
Click on the "Download" button to access the audio transcript.
Effects Of Hormone Replacement Therapy (Hrt) On Gene Expression In The Amyloid Processing Pathway Of Ovariectomized Rhesus Macaque Females Under An Obesogenic Diet, Megan Ball
University Honors Theses
Estrogens rapidly decline at the onset of menopause, putting women at higher risk of osteoporosis, obesity, and neurodegenerative diseases, including Alzheimer’s disease (AD). Estradiol hormone therapies (HT) have been suggested to limit these negative effects on women, with controversial findings as to their effectiveness. A study at OHSU recently found differentially expressed genes (DEGs) using RNAseq between ovariectomized/hysterectomized (OvH) old (range = 19.4–23.2 years) female rhesus macaques on HT and those on a placebo on chronic western style diet (WSD). The DEGs identified in the amyloid processing pathway of the amygdala were selected for validation using RT-qPCR because β-amyloid peptide …
Efficacy Of Curcumin In Asthma: A Systematic Review And Meta Analysis, Tabitha Grow, Adam Sadowski
Efficacy Of Curcumin In Asthma: A Systematic Review And Meta Analysis, Tabitha Grow, Adam Sadowski
McNair Symposium
Over 23 million people are affected by asthma in the United States and 262 million individuals globally. Asthma, if poorly controlled, is associated with significant morbidity as well as increased risk for mortality. Asthma involves several complex inflammatory pathways and processes including an increase in immune cell activation. Curcumin, the active constituent found in turmeric, has been studied in numerous in-vivo and in-vitro studies to generate anti-inflammatory effects in pulmonary diseases and, more recently, an increase in clinical data has become available. Since the most recent review assessing the role of curcumin in pulmonary disorders, additional clinical trials have been …
Aligning Food Environments With Institutional Values: A Mixed Methods Study Of Oregon Health Care Organizations, Elizaveta Walker
Aligning Food Environments With Institutional Values: A Mixed Methods Study Of Oregon Health Care Organizations, Elizaveta Walker
Dissertations and Theses
A major driver of the obesity epidemic is obesogenic food environments, characterized by nutrient-poor and energy-dense foods that saturate the collective physical, economic and sociocultural conditions that influence nutritional status. Food environments in organizations such as hospitals and public health agencies warrant special consideration given their health-focused mission. Improving food environments within health care settings has been highlighted by the Centers for Disease Control and Prevention (CDC) as one of seven key strategies to prevent obesity. However, most of the refereed literature examining healthy food environment policies (HFEPs) within hospitals focuses on the inpatient dietary environment, leaving a paucity of …
Preventing Infectious Hematopoietic Necrosis In Salmonid Fish Along The Columbia River Basin, Whitney L. Wright
Preventing Infectious Hematopoietic Necrosis In Salmonid Fish Along The Columbia River Basin, Whitney L. Wright
OHSU-PSU School of Public Health Annual Conference
Infectious hematopoietic necrosis virus (IHNV) is a member of the Rhabdoviridae family and causes infectious hematopoietic necrosis (IHN) disease in many salmonid species during the juvenile or “fry” stage of life. IHNV is endemic to Western North America and occurs in the Columbia River Basin, where Steelhead and Chinook salmon are the most abundant IHNV-vulnerable species. IHNV can cause an epidemic in wild or farmed stocks, killing 90-95 percent of the fish it infects. Transmission is currently understood to occur by direct exposure through the gills, and the virus is shed typically from asymptomatic or clinically ill carrier adults at …
Equity Arguments In News Reporting On School Nutrition Policy, Liana B. Winett, Lori Dorfman, Larissa Yoshino, Laura Nixon
Equity Arguments In News Reporting On School Nutrition Policy, Liana B. Winett, Lori Dorfman, Larissa Yoshino, Laura Nixon
OHSU-PSU School of Public Health Faculty Publications and Presentations
Purpose: In two related studies, we examined how equity-based arguments featured in news debate over federal school nutrition policy. Methods: We conducted content analyses of national and local print and broadcast news (September 1, 2014-December 31, 2015), examining arguments rooted in appeals about equity and/or disparities. Results: Equity and/or disparities appeals appeared in 24% television, 14% national print, and 5% local print stories. Socioeconomic inequities were mentioned most; racial/ethnic inequities appeared minimally. Conclusions: Neither equity nor disparity featured prominently in this news debate over policy created to address children's nutritional inequities. When included, arguments focused on overcoming inequities' effects rather …
County-Level Cumulative Environmental Quality Associated With Cancer Incidence, Jyotsna S. Jagai, Lynne C. Messer, Kristen M. Rappazzo, Christine L. Gray, Shannon C. Grabich, Danelle T. Lobdell
County-Level Cumulative Environmental Quality Associated With Cancer Incidence, Jyotsna S. Jagai, Lynne C. Messer, Kristen M. Rappazzo, Christine L. Gray, Shannon C. Grabich, Danelle T. Lobdell
Institute for Sustainable Solutions Publications and Presentations
BACKGROUND: Individual environmental exposures are associated with cancer development; however, environmental exposures occur simultaneously. The Environmental Quality Index (EQI) is a county-level measure of cumulative environmental exposures that occur in 5 domains.
METHODS: The EQI was linked to county-level annual age-adjusted cancer incidence rates from the Surveillance, Epidemiology, and End Results (SEER) Program state cancer profiles. All-site cancer and the top 3 site-specific cancers for male and female subjects were considered. Incident rate differences (IRDs; annual rate difference per 100,000 persons) and 95% confidence intervals (CIs) were estimated using fixed-slope, random intercept multilevel linear regression models. Associations were assessed with …
The Associations Between Environmental Quality And Preterm Birth In The United States, 2000–2005: A Cross-Sectional Analysis, Kristen M. Rappazzo, Lynne C. Messer, Jyotsna S. Jagai, Christine L. Gray, Shannon C. Grabich, Danelle T. Lobdell
The Associations Between Environmental Quality And Preterm Birth In The United States, 2000–2005: A Cross-Sectional Analysis, Kristen M. Rappazzo, Lynne C. Messer, Jyotsna S. Jagai, Christine L. Gray, Shannon C. Grabich, Danelle T. Lobdell
Community Health Faculty Publications and Presentations
Background: Many environmental factors have been independently associated with preterm birth (PTB). However, exposure is not isolated to a single environmental factor, but rather to many positive and negative factors that co-occur. The environmental quality index (EQI), a measure of cumulative environmental exposure across all US counties from 2000—2005, was used to investigate associations between ambient environment and PTB.
Methods: With 2000–2005 birth data from the National Center for Health Statistics for the United States (n = 24,483,348), we estimated the association between increasing quintiles of the EQI and county-level and individual-level PTB; we also considered environmental domain-specific (air, …
Associations Between The Quality Of The Residential Built Environment And Pregnancy Outcomes Among Women In North Carolina, Marie Lynn Miranda, Lynne C. Messer, Gretchen L. Kroeger
Associations Between The Quality Of The Residential Built Environment And Pregnancy Outcomes Among Women In North Carolina, Marie Lynn Miranda, Lynne C. Messer, Gretchen L. Kroeger
Community Health Faculty Publications and Presentations
Background: The built environment, a key component of environmental health, may be an important contributor to health disparities, particularly for reproductive health outcomes.Objective: In this study we investigated the relationship between seven indices of residential built environment quality and adverse reproductive outcomes for the City of Durham, North Carolina (USA).
Methods: We surveyed approximately 17,000 residential tax parcels in central Durham, assessing > 50 individual variables on each. These data, collected using direct observation, were combined with tax assessor, public safety, and U.S. Census data to construct seven indices representing important domains of the residential built environment: housing damage, property disorder, …