Geriatrics Commons^™

Temporal Changes In Inflammatory Mitochondria-Enriched Micrornas Following Traumatic Brain Injury And Effects Of Mir-146a Nanoparticle Delivery, Wang-Xia Wang, Pareshkumar Prajapati, Hemendra J. Vekaria, Malinda Spry, Amber L. Cloud, Patrick G. Sullivan, Joe E. Springer

Sanders-Brown Center on Aging Faculty Publications

MicroRNAs (miRNAs) are small non-coding RNA molecules that regulate post-transcriptional gene expression and contribute to all aspects of cellular function. We previously reported that the activities of several mitochondria-enriched miRNAs regulating inflammation (i.e., miR-142-3p, miR-142-5p, and miR-146a) are altered in the hippocampus at 3–12 hours following a severe traumatic brain injury. In the present study, we investigated the temporal expression profile of these inflammatory miRNAs in mitochondria and cytosol fractions at more chronic post-injury times following severe controlled cortical impact injury in rats. In addition, several inflammatory genes were analyzed in the cytosol fractions. The analysis showed that while elevated …

Addressing Psychosocial Outcomes Of Social Isolation In Older Adults, Megan Friesen, Madeline M. Christensen

Nursing DNP Projects

Purpose and Rationale

The aim of the evidence-based practice (EBP) project is to improve psychological outcomes for socially isolated older adults enrolled in a Homebound Program (HP) through the implementation of an EBP intervention. Social isolation has a multitude of negative consequences, including impacting the psychological health (e.g. depression, loneliness, anxiety) of the older adult population.

Synthesis of Evidence

Meta-analyses, systematic reviews, and randomized controlled trials addressing the clinical problem of social isolation were identified. Through critical appraisal of the evidence, physical activity, psychotherapy, and socialization interventions have shown to decrease depression and loneliness in older adults. There were mixed …

Gauging Working Memory Capacity From Differential Resting Brain Oscillations In Older Individuals With A Wearable Device, Soheil Borhani, Xiaopeng Zhao, Margaret R. Kelly, Karah E. Gottschalk, Fengpei Yuan, Gregory A. Jicha, Yang Jiang

Sanders-Brown Center on Aging Faculty Publications

Working memory is a core cognitive function and its deficits is one of the most common cognitive impairments. Reduced working memory capacity manifests as reduced accuracy in memory recall and prolonged speed of memory retrieval in older adults. Currently, the relationship between healthy older individuals’ age-related changes in resting brain oscillations and their working memory capacity is not clear. Eyes-closed resting electroencephalogram (rEEG) is gaining momentum as a potential neuromarker of mild cognitive impairments. Wearable and wireless EEG headset measuring key electrophysiological brain signals during rest and a working memory task was utilized. This research’s central hypothesis is that rEEG …

Gene Expression Barcode Values Reveal A Potential Link Between Parkinson's Disease And Gastric Cancer, Suyan Tian, Shishun Zhao, Mingbo Tang, Chi Wang

Internal Medicine Faculty Publications

Gastric cancer is a disease that develops from the lining of the stomach, whereas Parkinson's disease is a long-term degenerative disorder of the central nervous system that mainly affects the motor system. Although these two diseases seem to be distinct from each other, increasing evidence suggests that they might be linked. To explore the linkage between these two diseases, differentially expressed genes between the diseased people and their normal controls were identified using the barcode algorithm. This algorithm transforms actual gene expression values into barcode values comprised of 1's (expressed genes) and 0's (silenced genes). Once the overlapped differentially expressed …

Aberrant Azin2 And Polyamine Metabolism Precipitates Tau Neuropathology, Leslie A. Sandusky-Beltran, Andrii Kovalenko, Devon S. Placides, Kevin Ratnasamy, Chao Ma, Jerry B. Hunt, Huimin Liang, John Ivan T. Calahatian, Camilla Michalski, Margaret Fahnestock, Laura J. Blair, April L. Darling, Jeremy D. Baker, Sarah N. Fontaine, Chad A. Dickey, Joshua J. Gamsby, Kevin R. Nash, Erin L. Abner, Maj-Linda B. Selenica, Daniel C. Lee

Sanders-Brown Center on Aging Faculty Publications

Tauopathies display a spectrum of phenotypes from cognitive to affective behavioral impairments; however, mechanisms promoting tau pathology and how tau elicits behavioral impairment remain unclear. We report a unique interaction between polyamine metabolism, behavioral impairment, and tau fate. Polyamines are ubiquitous aliphatic molecules that support neuronal function, axonal integrity, and cognitive processing. Transient increases in polyamine metabolism hallmark the cell’s response to various insults, known as the polyamine stress response (PSR). Dysregulation of gene transcripts associated with polyamine metabolism in Alzheimer’s disease (AD) brains were observed, and we found that ornithine decarboxylase antizyme inhibitor 2 (AZIN2) increased to …

Novel Influences Of Sex And Apoe Genotype On Spinal Plasticity And Recovery Of Function After Spinal Cord Injury, Lydia E. Strattan, Daimen R. Britsch, Chris M. Calulot, Rachel S. J. Maggard, Erin L. Abner, Lance A. Johnson, Warren J. Alilain

Sanders-Brown Center on Aging Faculty Publications

Spinal cord injuries can abolish both motor and sensory function throughout the body. Spontaneous recovery after injury is limited and can vary substantially between individuals. Despite an abundance of therapeutic approaches that have shown promise in preclinical models, there is currently a lack of effective treatment strategies that have been translated to restore function after SCI in the human population. We hypothesized that sex and genetic background of injured individuals could impact how they respond to treatment strategies, presenting a barrier to translating therapies that are not tailored to the individual. One gene of particular interest is APOE, which has …

Broad Kinase Inhibition Mitigates Early Neuronal Dysfunction In Tauopathy, Shon A. Koren, Matthew J. Hamm, Ryan Cloyd, Sarah N. Fontaine, Emad Chishti, Chiara Lanzillotta, Jennifer Rodriguez-Rivera, Alexandria Ingram, Michelle Bell, Sara M. Galvis-Escobar, Nicholas Zulia, Fabio Di Domenico, Duc Duong, Nicholas T. Seyfried, David K. Powell, Moriel Vandsburger, Tal Frolinger, Anika M. S. Hartz, John Koren Iii, Jeffrey M. Axten, Nicholas J. Laping, Jose F. Abisambra

Sanders-Brown Center on Aging Faculty Publications

Tauopathies are a group of more than twenty known disorders that involve progressive neurodegeneration, cognitive decline and pathological tau accumulation. Current therapeutic strategies provide only limited, late-stage symptomatic treatment. This is partly due to lack of understanding of the molecular mechanisms linking tau and cellular dysfunction, especially during the early stages of disease progression. In this study, we treated early stage tau transgenic mice with a multi-target kinase inhibitor to identify novel substrates that contribute to cognitive impairment and exhibit therapeutic potential. Drug treatment significantly ameliorated brain atrophy and cognitive function as determined by behavioral testing and a sensitive imaging …

The Association Of Circulating Amylin With Β-Amyloid In Familial Alzheimer's Disease, Han Gia Ly, Nirmal Verma, Savita Sharma, Deepak Kotiya, Sanda Despa, Erin L. Abner, Peter T. Nelson, Gregory A. Jicha, Donna M. Wilcock, Larry B. Goldstein, Rita Guerreiro, José Brás, Angela J. Hanson, Suzanne Craft, Andrew J. Murray, Geert Jan Biessels, Claire Troakes, Henrik Zetterberg, John Hardy, Tammaryn Lashley, Alzheimer’S Disease Exome Sequencing Group, Florin Despa

Pharmacology and Nutritional Sciences Faculty Publications

Introduction

This study assessed the hypothesis that circulating human amylin (amyloid‐forming) cross‐seeds with amyloid beta (Aβ) in early Alzheimer's disease (AD).

Methods

Evidence of amylin‐AD pathology interaction was tested in brains of 31 familial AD mutation carriers and 20 cognitively unaffected individuals, in cerebrospinal fluid (CSF) (98 diseased and 117 control samples) and in genetic databases. For functional testing, we genetically manipulated amylin secretion in APP/PS1 and non‐APP/PS1 rats.

Results

Amylin‐Aβ cross‐seeding was identified in AD brains. High CSF amylin levels were associated with decreased CSF Aβ42 concentrations. AD risk and amylin gene are not correlated. Suppressed amylin secretion protected …

Memory-Related Frontal Brainwaves Predict Transition To Mild Cognitive Impairment In Healthy Older Individuals Five Years Before Diagnosis, Yang Jiang, Juan Li, Frederick A. Schmitt, Gregory A. Jicha, Nancy B. Munro, Xiaopeng Zhao, Charles D. Smith, Richard J. Kryscio, Erin L. Abner

Behavioral Science Faculty Publications

BACKGROUND: Early prognosis of high-risk older adults for amnestic mild cognitive impairment (aMCI), using noninvasive and sensitive neuromarkers, is key for early prevention of Alzheimer's disease. We have developed individualized measures in electrophysiological brain signals during working memory that distinguish patients with aMCI from age-matched cognitively intact older individuals.

OBJECTIVE: Here we test longitudinally the prognosis of the baseline neuromarkers for aMCI risk. We hypothesized that the older individuals diagnosed with incident aMCI already have aMCI-like brain signatures years before diagnosis.

METHODS: Electroencephalogram (EEG) and memory performance were recorded during a working memory task at baseline. The individualized baseline neuromarkers, …

Arginase 1 Insufficiency Precipitates Amyloid-Β Deposition And Hastens Behavioral Impairment In A Mouse Model Of Amyloidosis, Chao Ma, Jerry B. Hunt, Maj-Linda B. Selenica, Awa Sanneh, Leslie A. Sandusky-Beltran, Mallory Watler, Rana Daas, Andrii Kovalenko, Huimin Liang, Devon Placides, Chuanhai Cao, Xiaoyang Lin, Michael B. Orr, Bei Zhang, John C. Gensel, David J. Feola, Marcia N. Gordon, Dave Morgan, Paula C. Bickford, Daniel C. Lee

Sanders-Brown Center on Aging Faculty Publications

Alzheimer’s disease (AD) includes several hallmarks comprised of amyloid-β (Aβ) deposition, tau neuropathology, inflammation, and memory impairment. Brain metabolism becomes uncoupled due to aging and other AD risk factors, which ultimately lead to impaired protein clearance and aggregation. Increasing evidence indicates a role of arginine metabolism in AD, where arginases are key enzymes in neurons and glia capable of depleting arginine and producing ornithine and polyamines. However, currently, it remains unknown if the reduction of arginase 1 (Arg1) in myeloid cell impacts amyloidosis. Herein, we produced haploinsufficiency of Arg1 by the hemizygous deletion in myeloid cells using Arg1 …

Lat1 Protein Content Increases Following 12 Weeks Of Resistance Exercise Training In Human Skeletal Muscle, Paul A. Roberson, Christopher Brooks Mobley, Matthew A. Romero, Cody T. Haun, Shelby C. Osburn, Petey W. Mumford, Christopher G. Vann, Rory A. Greer, Arny A. Ferrando, Michael D. Roberts

Physiology Faculty Publications

Introduction: Amino acid transporters are essential for cellular amino acid transport and promoting protein synthesis. While previous literature has demonstrated the association of amino acid transporters and protein synthesis following acute resistance exercise and amino acid supplementation, the chronic effect of resistance exercise and supplementation on amino acid transporters is unknown. The purpose herein was to determine if amino acid transporters and amino acid metabolic enzymes were related to skeletal muscle hypertrophy following resistance exercise training with different nutritional supplementation strategies.

Methods: 43 college-aged males were separated into a maltodextrin placebo (PLA, n = 12), leucine (LEU, n = 14), …

Dystrophic Microglia Are Associated With Neurodegenerative Disease And Not Healthy Aging In The Human Brain, Ryan K. Shahidehpour, Rebecca E. Higdon, Nicole G. Crawford, Janna H. Neltner, Eseosa T. Ighodaro, Ela Patel, Douglas Price, Peter T. Nelson, Adam D. Bachstetter

Spinal Cord and Brain Injury Research Center Faculty Publications

Loss of physiological microglial function may increase the propagation of neurodegenerative diseases. Cellular senescence is a hallmark of aging; thus, we hypothesized age could be a cause of dystrophic microglia. Stereological counts were performed for total microglia, 2 microglia morphologies (hypertrophic and dystrophic) across the human lifespan. An age-associated increase in the number of dystrophic microglia was found in the hippocampus and frontal cortex. However, the increase in dystrophic microglia was proportional to the age-related increase in the total number of microglia. Thus, aging alone does not explain the presence of dystrophic microglia. We next tested if dystrophic microglia could …

On Wisdom, Gerontology, And Personal Aging: Through A Looking Glass, Edward F. Ansello

Director's Editorials from Age in Action

Personal discussion on the perspective of aging and teaching more interiority and self-reflection in the field of gerontology.

Leading From The Middle, Edward F. Ansello

Director's Editorials from Age in Action

A reminiscent farewell to colleagues and the Virginia Center on Aging (VCoA) as Edward F. Ansello, Ph.D., retires as Director of VCoA.

Actively Engaging With Virginia Center On Aging’S Retired Community, Leland "Bert" Waters

Director's Editorials from Age in Action

VCU is the receiver of an Age-Friendly University (AFU) Global Network designation in June 2021. The Virginia Geriatric Education Center (VGEC) maintains a diverse team, including those who make "mid/late-career" changes into the Gerontology field. Bert Waters gives examples and history on some who make up this diverse team.

Metabolic Syndrome And How To Fight It, Edward F. Ansello

Director's Editorials from Age in Action

The health condition Metabolic Syndrome is becoming increasingly prevalent. To combat this, dietary improvements and incorporating movement into our daily routines are the basics suggested.

Strengthening Capacities To Respond To Dementia With Lifelong Disabilities: Using The Project Echo Model, Edward F. Ansello

Case Studies from Age in Action

Educational Objectives

1. To discuss the need for interprofessional training about aging with lifelong disabilities and dementia.

2. To demonstrate the continuing heterogeneity among adults growing older with these conditions.

3. To report the relevance of the Project ECHO model as a means of collaborative training and practice improvement.

Lucy Corr Dental Clinic: Addressing Dental Needs Of Uninsured Older Adults, Patricia B. Bonwell

Case Studies from Age in Action

Educational Objectives

1. Discuss the critical importance of oral health and the oral-systemic relationship in older adults.

2. Describe how dental insurance determines receipt of dental treatment in older adults.

3. Share how the Lucy Corr Dental Clinic (LCDC) increases access to dental care for uninsured older adults.

4. Describe valuable collaborations with community foundations, the Virginia Dental Association, and Virginia Commonwealth University that enable the success of the LCDC.

The Vcu Nursing Home Echo, A Member Of The National Covid-19 Action Network, Bert Water, Kimberly Ivey, Annie Rhodes, Christian Bergman, Daniel Bluestein, Jenni Mathews, Laura Finch, Shannon Arnette, Joanne Coleman, Maddie Mcintyre, Tara Rouse

Case Studies from Age in Action

Educational Objectives

1. To demonstrate the tremendous impact of COVID-19 on long-term care facilities.

2. To discuss the need for continuous, current, interprofessional education of both administrative and clinical staff within long-term care facilities.

3. To discuss the value of building interconnective and interprofessional relationships between both academic health science centers and nursing homes.

Improving Guardianship Practices Through Collaborative Stakeholder Action, Erica Wood, Shasta Douglass

Case Studies from Age in Action

Educational Objectives

1. Describe the purpose of adult guardianship and its effect on fundamental rights.

2. Explain the need for guardianship reform, the obstacles to reform, and what issues need attention in Virginia.

3. Discuss the purpose of state Working Interdisciplinary Networks of Guardianship Stakeholders (WINGS) and the creation and accomplishments of Virginia WINGS.

4. Review cases in which a WINGS pilot project supported the needs and rights of adults with guardians.

Spreading Encouragement To Seniors In A Pandemic, Bonnie L. Rogulj, Lashia Hicks

Physical Therapy Collection

This brief note describes a "virtual calendar" project created by students of the University of St. Augustine for Health Sciences. The calendar of images and poetry was shared with older adult community members to reduce loneliness and increase mental health and wellness in this population during the COVID-19 pandemic.

Using The Memorial Sloan Kettering Frailty Index To Identify Patients At High Risk For Postoperative Intensive Care Unit Admission, Specialized Advanced Care Unit Admission, And 30-Day Readmission, Timothy J. Donoghue

Theses and Dissertations

Frailty is roughly defined as an accumulation of physiological, emotional, cognitive, and social deficits that impair a person’s response to stressful events. A frailty diagnosis has been associated with poor outcomes following surgical procedures. Cancer surgical patients aged 65 or older represent a vulnerable population susceptible to being frail and the potential associated complications that can accompany frailty. Measuring frailty is an objective risk assessment that identifies increased risk better than age or American Society of Anesthesiologists Physical Status (ASA-PS) score such that frailty can independently predict poor surgical outcomes.

Frailty is not specifically a result of having cancer, disability, …

Interdisciplinary Community-Based Support For Caregivers Of Individuals Living With Dementia, Gina Tucker-Roghi, Jamie Escoubas, Renee Tolliver, Sarah Tucker

Occupational Therapy | Faculty Scholarship

Evidence indicates family caregivers of individuals living with dementia (ILwD) are at risk for diminished physical and mental health; which may decrease their quality of life and directly impact their ability to provide care. An interdisciplinary approach to self-care and skill-building for caregivers is provided in a virtual support group offered by Council on Aging in Sonoma County, CA. As part of the nonprofit’s Adult Day Program, the group is offered to client caregivers and has two goals: First, creating a communitybased, long-term support system for ILwD who are agingin-place; second, fostering a safe and supportive community for family caregivers, …

Validity, Reliability, And Measurement Error Of A Sit-To-Stand Power Test In Older Adults: A Pre-Registered Study, Anoop T. Balachandran

Publications and Research

Objectives: Lower body power declines with age and is associated with decreased physical function in older adults. However, the majority of the tools available to measure power are expensive and require considerable space and expertise to operate. The purpose of this study was to assess the validity, reliability, and measurement error of a sit-to-stand power test (STSp) to assess lower body power. Methods: 51 community-dwelling adults, 65 years or older, completed a power test using a pneumatic leg press (LP), the Short Physical Performance Battery (SPPB) that includes a test of balance, usual walking speed, and chair stand tests; Timed …

New Evidence For P-Gp-Mediated Export Of Amyloid-Β Peptides In Molecular, Blood-Brain Barrier And Neuronal Models, Amanda B. Chai, Anika M. S. Hartz, Xuexin Gao, Alryel Yang, Richard Callaghan, Ingrid C. Gelissen

Sanders-Brown Center on Aging Faculty Publications

Defective clearance mechanisms lead to the accumulation of amyloid-beta (Aβ) peptides in the Alzheimer’s brain. Though predominantly generated in neurons, little is known about how these hydrophobic, aggregation-prone, and tightly membrane-associated peptides exit into the extracellular space where they deposit and propagate neurotoxicity. The ability for P-glycoprotein (P-gp), an ATP-binding cassette (ABC) transporter, to export Aβ across the blood-brain barrier (BBB) has previously been reported. However, controversies surrounding the P-gp–Aβ interaction persist. Here, molecular data affirm that both Aβ₄₀ and Aβ₄₂ peptide isoforms directly interact with and are substrates of P-gp. This was reinforced ex vivo by the …

Neither “Post-War” Nor Post-Pregnancy Paranoia: How America’S War On Drugs Continues To Perpetuate Disparate Incarceration Outcomes For Pregnant, Substance-Involved Offenders, Becca S. Zimmerman

Pitzer Senior Theses

This thesis investigates the unique interactions between pregnancy, substance involvement, and race as they relate to the War on Drugs and the hyper-incarceration of women. Using ordinary least square regression analyses and data from the Bureau of Justice Statistics’ 2016 Survey of Prison Inmates, I examine if (and how) pregnancy status, drug use, race, and their interactions influence two length of incarceration outcomes: sentence length and amount of time spent in jail between arrest and imprisonment. The results collectively indicate that pregnancy decreases length of incarceration outcomes for those offenders who are not substance-involved but not evenhandedly -- benefitting white …

The Impact Of Social Isolation And Cognitive Decline In Older Adults: A Systematic Literature Review, Jody L. Doll-Wilhelm

All Graduate Theses, Dissertations, and Other Capstone Projects

Background: During the COVID-19 pandemic, deaths of Alzheimer’s Disease (AD) and dementia patients surged. Increased social isolation and decreased activity levels in older adults have been suggested as contributing factors to accelerating AD and dementia. However, assessment tools to gauge interventions and outcomes of cognitive decline are variable among the literature.

Objective: Examine the impact of social engagement versus social isolation, like that experienced with the COVID-19 pandemic, on cognitive decline/dementia in older adults (greater than 60 years of age).

Method: A systematic search for studies evaluating the relationship between social isolation and social activity in cognitive …

Reducing Polypharmacy In Older Adults At End Of Life: The Outcome On Quality Of Life, Melissa Jenson

All Graduate Theses, Dissertations, and Other Capstone Projects

Background: Older adults at the end of life are commonly prescribed multiple medications which can lead to polypharmacy. Research has shown that optimizing medications through targeted deprescribing reduces inappropriate medications, reduces adverse effects and improves select outcomes. However, the impact of deprescribing remains uncertain--specifically whether this intervention improves quality of life (QOL). Objective: Explore polypharmacy in older adults at the end of life examining outcomes of deprescribing on the QOL. Methods: A systematic literature search using Academic Search Premier, CINAHL, Medline, JSTOR and Nursing and Allied Health Database was conducted between October 2020 to November 2020. Select articles …

How Does Direct Volunteering Affect The Onset Of Alzheimer’S Dementia In Elderly Patients With Preexisting Cardiac Comorbidities?, Sneha R. Gade

UROP Posters

Alzheimer's Dementia is a disease that affects memory, thinking, and behavior. The Alzheimer's Association reported Alzheimer's as the sixth-leading cause of death in the United States, and a cure does not exist. Donepezil, a cholinesterase inhibitor drug, is frequently prescribed to treat Alzheimer's disease. Still, patients must continuously take the medication for years to receive any measurable improvement in quality of life after developing Alzheimer's Dementia. Further, research shows prolonged use of Donepezil can lead to other health problems, such as QTc prolongation, for cardiac disease patients. Therefore, the effectiveness of non-drug interventions, such as volunteering to prevent the disease's …

The Relationship Of Obesity With Falls Among Older Adults, Kioh Sheng Hui

Student Works (2020-2029)

Both falls and obesity are major public health issues in older adults and have been identified as the fifth leading cause of death among older adults. The relationship between obesity and falls have been conflicting in the limited publications available. This doctoral research comprised: 1) a cross-sectional study on obesity and falls, 2) a prospective study on obesity and falls and 3) an intercontinental comparison of relationship between obesity and falls. The study populations consisted of adults aged ≥55years from the Malaysian Elders Longitudinal Study (MELoR), the European Prospective Investigation into Cancer - Norfolk study (EPIC- NORFOLK) and Bavarian Research …