Medicine and Health Sciences Commons^™

Intersectional Social Inequalities And Cognitive Functioning Among Community-Dwelling Older Adults In England: A Decomposition Analysis Of The Mediating Role Of Loneliness, Chantel Walwyn

Electronic Thesis and Dissertation Repository

Normative cognitive decline is an emerging public health issue for older adult populations. It is necessary that we take an intersectional approach to examining heterogeneity in cognitive health outcomes. Using complex longitudinal survey data from the English Longitudinal Study of Ageing (ELSA), multiple linear regression models were used to examine the relationship between intersectional group membership based on age, education, and sex, and change in cognitive functioning domains (memory function, and executive function) over an 8-year period. Three-way decomposition analysis was also used to examine the mediating effect of loneliness on the association between intersectional group membership and the change …

The Effect Of Mtor Inhibitor Rapamycin On A Dietary Drosophila Melanogaster Model Of Calcium Oxalate Nephrolithiasis, Michael T. Pignanelli

Electronic Thesis and Dissertation Repository

Impaired cellular tolerance of reactive oxygen species (ROS) has been suggested as a common mechanistic link associated with aging in both metabolic syndrome and nephrolithiasis. The mechanistic (mammalian) target of rapamycin (mTOR) activity is characteristic of metabolic syndrome. When nutrients are abundant, mTOR is active. Conversely, fasting inhibits mTOR. Metabolic syndrome is correlated with an increased risk of self-reported or imaging findings of nephrolithiasis. At the individual level, patients with a higher BMI have an increased prevalence of recurrent symptomatic nephrolithiasis, 24-hour urinary excretion of oxalate, sodium, uric acid, calcium, and phosphorous as well as lower pH. Calcium oxalate crystals …

Immune Modulation As A Therapeutic Target In An Α-Synuclein Model Of Parkinson’S Disease, Meena Subhashini Subbarayan

USF Tampa Graduate Theses and Dissertations

Parkinson’s disease (PD) is the second most common neurodegenerative disorder affecting about 1.5 million people in the United States with more than 60,000 people diagnosed each year. It is classically characterized by four major symptoms: tremor, postural instability, stiffness in joints, and slow movement (bradykinesia). Pathologically PD is characterized by up to 70% loss of dopaminergic neurons in substantia nigra pars compacta (SNpc) of midbrain and accumulation of presynaptic protein called α-synuclein (α-syn) within dopaminergic neurons that extend to the striatum. This disrupts the nigrostriatal pathway leading to the motor symptoms seen in PD patients. Microglia, the innate immune cells …

Aging: The Impact Of Diet And Inflammation, Morgan Wiland-Gress

Nursing Student Class Projects (Formerly MSN)

The immune system is a complex cohesive network. It requires every cell to work efficiently at maintaining homeostasis. It also prevents and repairs damage from internal and external pathogens. Recent research has focused on the concept of inflammaging, which is defined as age-related changes that occur in the immune system leading to dysfunction. The current understanding is that inflammaging contributes to the development of chronic diseases including; Type II Diabetes, Cardiovascular disease, Cancer, autoimmune disorders, neurological disorders, Alzheimer and Parkinson’s disease. The underlying pathophysiology of inflammaging is chronic inflammation and the imbalance of pro-inflammatory and anti-inflammatory mediators. This imbalance leads …

Exploring Predictors Of Older Adults' Performance On A Novel Driving Simulator Task, John Philip Bernstein

LSU Doctoral Dissertations

On a per-mile driven basis, older adults are at increased risk of being involved in an automobile accident. The development and implementation of driving assessment tools is necessary to inform decisions about driving reduction and cessation. Driving simulators are one method of assessing driving performance and safety, however many simulators are cost-prohibitive for most researchers and clinicians. Additionally, while driving performance has been previously explored with respect to clinical populations (e.g., Alzheimer’s Disease), less work has evaluated this topic in a cognitively healthy sample. The present study sought to determine whether a novel, cost-effective driving simulator (Assetto Corsa (AC)) might …

Aging With Hiv In The United States: Trends And Impact Of Hospital Stays On Inpatient Resource Utilization, And Costs Of Care, 2003-2015, Khairul Alam Siddiqi

Theses and Dissertations

Background:

Due to advances in Antiretroviral Therapy (ART), people living with HIV (PLWH) live longer in the United States. Aging prolongs exposure to HIV and antiretroviral drugs, which could lead to an elevated risk of developing multiple age-related comorbidities [HIV Associated Non-AIDS (HANA) conditions], earlier for PLWH. Higher comorbidity burdens among older PLWH may require greater use of inpatient care, i.e., higher hospitalization, inpatient resource utilization, and costs. This study examined the trends and characteristics of comorbidities, resource utilization, and costs of hospital stays with HIV (HSWH) compared to hospital stays without HIV (HSWOH). We also assessed trends for resource …

Assisted Living Facilities In Florida: Examining The Factors Associated With Entries, Closure, And Licensure Change, Joseph W. June

USF Tampa Graduate Theses and Dissertations

Assisted living facilities (ALFs) have become a large provider of long-term care in the United States. Their expansion has been met with interest from older adults who desire to be independent yet receive some services and from state legislators who recently have attempted to increase access. Studies in long-term care have focused extensively on nursing homes, but recent research has examined the effects of ALFs on the long-term care market. Research has been lacking in understanding the unique markets of ALFs. Describing themselves as “communities” and offering multiple options for housing, ALFs have targeted independent and wealthier older adults who …

Indicators Of Mild Cognitive Impairment Associated With Language Processing And Production, Diana Julbe-Delgado

USF Tampa Graduate Theses and Dissertations

The research purpose of the present study was to (1) examine cognitive-linguistic features related to processing and production across a series of tasks that are representative of everyday discourse and (2) compare older adults with and without mild cognitive impairment (MCI) across linguistic features. Twenty-seven participants, including 12 individuals with- and 15 individuals without MCI, were enrolled from a larger study (Hudak et al., 2019). Cognitive status was initially assessed as part of the larger study using the Montreal Cognitive Assessment (MoCA; Nasreddine et al., 2005). Participants who scored ≤ 25 on the MoCA received a standardized neuropsychological evaluation and …

Balance Function: A Potential Early Indicator Of Mild Cognitive Impairment, Karen L. Bell

USF Tampa Graduate Theses and Dissertations

This study examined oculomotor and vestibular function in young adults, cognitively normal older adults (CNOA), and older adults with MCI. Oculomotor and vestibular function were assessed using videonystagmography (VNG), vestibular evoked myogenic potentials (VEMPs), the modified Clinical Test of Sensory Integration and Balance (mCTSIB), and the Fukuda Stepping test. Forty-two participants comprised three groups (young adults, n = 15; CNOA, n = 13; MCI, n = 14). The Montreal Cognitive Assessment ([MoCA]; Nasreddine et al., 2005) was used to assess cognitive status, and a MCI diagnosis was confirmed using standardized neuropsychological testing and a physician’s exam. MANOVA was calculated to …

Impacts Of Embryonic Exposure To Cannabidiol Or ∆9-Tetrahydrocannabinol On Zebrafish (Danio Rerio) Frailty In F0 And F1 Generations, Anika Faruque

Honors Theses

Exposure to cannabinoids during critical development periods has increased with epileptic children being commonly prescribed CBD for seizures and pregnant women taking it recreationally. Many studies have been done on the possible benefits and drawbacks of cannabinoid exposure on the human brain, but not much is known about how it can affect the developing brain long-term. To see the potential adverse effects of cannabinoid exposure during critical stages of development and discover potential developmental origins of disease in consuming cannabinoids during embryogenesis, zebrafish embryos (6-96 hours post fertilization) were exposed to varying concentrations of CBD (0.02, 0.1, 0.5 µM), THC …

Multi-Generational Effects Of ∆9-Tetrahydrocannabinol Exposure On Gene Expression In Liver Tissue, Kayla Lovitt

Honors Theses

Cannabis is the most commonly used, cultivated, and trafficked illicit drug worldwide. Increased availability and acceptance of cannabis and cannabinoid-containing products provide the necessity for understanding how these substances influence aging. In this study, zebrafish (Danio rerio) were exposed to concentrations of Δ⁹-tetrahydrocannabinol (THC) (0.08, 0.4, 2 µM) during embryonic-larval development, the effects on aging were measured 30 months later and in the offspring of the exposed fish (F1 generation. We observed results indicating a biphasic and hormetic effect. Treatment with the lowest concentration of THC significantly increased egg production, while higher concentrations resulted in impaired …

Using Art As Therapy With Older Adults To Foster Connections And Establish Community Literature Review, Melissa Uva

Expressive Therapies Capstone Theses

This literature review advocates for the general needs of the growing aging population and focuses on how art as therapy programming can best support those needs. Arts programming, with an art therapy-inspired lens, can address the many needs of the older adult population and may promote meaningful connections between (1) the client and the art materials, (2) the client and self (both current and former), (3) the client and the facilitator/therapist, (4) the client and dyad or small groups and (5) the client and the community. The power of art therapy practices serves as the framework of this literature review, …

The Role Of Culture In Engaging The Senior Population In Omaha, Ne, Jamie Bish

Theses/Capstones/Creative Projects

In recent years, the senior care industry has become the focus of many public health initiatives as we have come to better understand the significance of our aging population (Olivari et al., 2020). Between the years 2010 and 2050, the population of the United States over 65 years is expected to more than double, from 40.5 to 89 million (Dall et al., 2013). While this data provides a national outlook, further research is needed to determine local impacts. This project centers on developing a better understanding of the demographics of seniors in the Omaha-Council Bluffs Metropolitan Statistical Area and how …

An Examination Between Neighborhood Characteristics And Alzheimer’S Disease And Related Dementias And Caregiver Mental Health In South Carolina, Dana Mahmoud Alhasan

Theses and Dissertations

Research has examined the relationship between neighborhood environments and cognitive decline, yet few have investigated the role of neighborhood characteristics specifically on incident Alzheimer’s disease and related dementias (ADRD), on severity of Alzheimer’s disease (AD) including neuropsychiatric symptoms (NPS), and on caregiver mental health including depressive symptoms. This dissertation aimed to 1) ecologically examine the geographic distribution of ADRD and investigate ecologic associations between census-tract neighborhood characteristics and diagnosed ADRD case incidence from 2010-2014 in the South Carolina (SC) Alzheimer’s Disease Registry; 2) estimate the cross-sectional association between neighborhood characteristics and NPS among those with AD in 2010 in SC; …

Mass Spectrometry Discovery-Based Proteomics To Examine Anti-Aging Effects Of The Nutraceutical Nt-020 In Rat Serum, Samantha M. Portis

USF Tampa Graduate Theses and Dissertations

Aging is a complex physiological process that leads to the deterioration of all cells and tissues throughout the body. Aging is a major risk factor for the onset of many degenerative diseases in both the central nervous system (CNS) and the periphery, but even nonpathological aging (“normal” aging) is associated with chronic inflammation, oxidative stress, and decreased stem cell proliferation and regenerative capacity. This decreased regenerative capacity in stem cell niches is thought to be a key component underlying the aging process and many disease states associated with aging.

While the exact biological mechanisms underlying impaired stem cell proliferation and …

Speech Motor Control In Younger And Older Adults: The Effect Of Age And Individual Differences On Speech Error Production, Katherine M. Dawson

Dissertations, Theses, and Capstone Projects

This dissertation investigates three main issues in speech motor control, all of which are explored through the lens of speech error production. The speech error elicitation task used is the alternating onset, identical coda (e.g. ‘top cop’) paradigm, which in this incarnation is executed in time to a rate-increasing metronome. The first experimental chapter asks why some speakers may be more prone to the production of speech errors than others, from an individual differences perspective. A number of speaker attributes are taken into account, including age (older and younger adults), performance on a subset of cognitive tasks, as well as …

Age Differences In Hippocampal Glutamate Modulation During Associative Learning And Memory: A Proton Functional Magnetic Resonance Spectroscopy (1h Fmrs) Study, Chaitali Anand

Wayne State University Dissertations

Episodic and associative memory decline is one of the earliest cognitive impairments in normal aging and among the defining cognitive features of Alzheimer’s disease (AD). Since, age-related cognitive decline gradually devolves into AD, with neuropathology preceding cognitive changes by many years, the identification of biomarkers of early disease progression is crucial. Reduction in glutamate, the main excitatory neurotransmitter involved in associative memory, in key brain regions such as the hippocampus, has been theorized as one of the cellular mechanisms underlying cognitive decline in aging and AD. A few neuroimaging studies that demonstrated a link between older adults’ weaker cognitive performance …

Does The Administration Of Curcumin, Compared To Placebo, Change Cognitive Function In Adults Older Than 40?, Rachel L. Hawkins

PCOM Physician Assistant Studies Student Scholarship

OBJECTIVE: The objective of this selective EBM review is to determine whether or not the use of curcumin, versus a placebo, is effective in changing cognitive function.

STUDY DESIGN: Review of 3 randomized control trials with blinding in English from 2008 to present.

DATA SOURCES: Articles were selected from Cochrane and PubMed databases based on relevance to the selected research question and patient-centered outcomes.

OUTCOME(S) MEASURED: The outcome measured is cognitive change, evaluated by mean score changes in the Mini Mental Status Examination (MMSE) or the Montreal Cognitive Assessment (MoCA).

RESULTS: Two of the studies demonstrated no change in cognitive …

Epigenetic Regulation Of Drug Metabolizing Enzymes In Normal Aging, Mohamad M. Kronfol

Theses and Dissertations

Geriatric populations are at a higher risk for adverse drug reactions (ADRs). This may be partly due to changes in drug metabolism in old age, but the underlying mechanisms are poorly understood. Prior research in humans and mice has shown age-associated changes to the expression of several genes involved in drug metabolism. Furthermore, studies of human blood showed that epigenetic regulation of genes encoding drug metabolizing enzymes change with age. However, it is unknown if genes in the liver are similarly affected. Therefore, we hypothesize that genes encoding drug metabolizing enzymes may show differential epigenetic regulation in the liver with …

Dietary Nitrate And The Oral Microbiome In Obesity, Health And Exercise, Christian E. Behrens

All ETDs from UAB

Obesity ranks among the top growing health concerns worldwide. The prevalence of obesity at all life stages continues to rise with nearly 40% of adults and 35% of children/adolescents being affected. Equally troublesome is the increased risk for a number of comorbidities associated with obesity including cardiovascular disease, stroke, type 2 diabetes mellitus, and certain types of cancer. The successful treatment of obesity, particularly long-term, continues to prove challenging and is often met with limited success. This highlights the importance of continued investigation into alternative strategies that may reduce the incidence and severity of obesity and associated pathophysiologies. Regular physical …