Geriatrics Commons^™

Apoe Genetics Influence Murine Gut Microbiome, Diana J. Zajac, Stefan J. Green, Lance A. Johnson, Steven Estus

Sanders-Brown Center on Aging Faculty Publications

Apolipoprotein E (APOE) alleles impact pathogenesis and risk for multiple human diseases, making them primary targets for disease treatment and prevention. Previously, we and others reported an association between APOE alleles and the gut microbiome. Here, we evaluated effects of APOE heterozygosity and tested whether these overall results extended to mice maintained under ideal conditions for microbiome analyses. To model human APOE alleles, this study used APOE targeted replacement (TR) mice on a C57Bl/6 background. To minimize genetic drift, homozygous APOE3 mice were crossed to homozygous APOE2 or homozygous APOE4 mice prior to the study, and the resulting …

Single Low-Dose Targeted Bevacizumab Infusion In Adult Patients With Steroid-Refractory Radiation Necrosis Of The Brain: A Phase Ii Open-Label Prospective Clinical Trial, Shervin R. Dashti, Robert J. Kadner, Bradley S. Folley, Jason P. Sheehan, Dong Y. Han, Richard J. Kryscio, Mary B. Carter, Lisa B. E. Shields, Brian M. Plato, Renato V. La Rocca, Aaron C. Spalding, Tom L. Yao, Justin F. Fraser

Sanders-Brown Center on Aging Faculty Publications

OBJECTIVE There is an unmet need for safe and rapidly effective therapies for refractory brain radiation necrosis (RN). The aim of this prospective single-arm phase II trial was to evaluate the safety and efficacy of a single low-dose targeted bevacizumab infusion after blood-brain barrier disruption (BBBD) in adult patients with steroid-refractory brain RN.

METHODS Ten adults with steroid-refractory, imaging-confirmed brain RN were enrolled between November 2016 and January 2018 and followed for 12 months after treatment. Bevacizumab 2.5 mg/kg was administered as a one-time targeted intra-arterial infusion immediately after BBBD. Primary outcomes included safety and > 25% decrease in lesion volume. …

Joseph T. Freeman Award And Excellence In Rehabilitation Of Aging Persons Award Presentations And Lectures, Cynthia J. Brown

School of Medicine Faculty Publications

Gerontological Society of America 2022 Annual Scientific Meeting; November 2 - 6, 2022; Indianapolis, IN

Digital Biomarkers Of Gait And Balance In Diabetic Foot, Measurable By Wearable Inertial Measurement Units: A Mini Review, Gu Eon Kang, Angeloh Stout, Ke'vaughn Waldon, Seungmin Kang, Amanda L Killeen, Peter A Crisologo, Michael Siah, Daniel Jupiter, Bijan Najafi, Ashkan Vaziri, Lawrence A Lavery

Center on Aging Staff Publications

People with diabetic foot frequently exhibit gait and balance dysfunction. Recent advances in wearable inertial measurement units (IMUs) enable to assess some of the gait and balance dysfunction associated with diabetic foot (i.e., digital biomarkers of gait and balance). However, there is no review to inform digital biomarkers of gait and balance dysfunction related to diabetic foot, measurable by wearable IMUs (e.g., what gait and balance parameters can wearable IMUs collect? Are the measurements repeatable?). Accordingly, we conducted a web-based, mini review using PubMed. Our search was limited to human subjects and English-written papers published in peer-reviewed journals. We identified …

The Association Of Gabapentin Initiation And Neurocognitive Changes In Older Adults With Normal Cognition, Gyeon Oh, Daniela Claudia Moga, David W. Fardo, Erin L. Abner

Sanders-Brown Center on Aging Faculty Publications

Background: Gabapentin is increasingly prescribed to older adults, which raises concerns about its potential to cause neurocognitive changes. Therefore, we aimed to examine the association of gabapentin use with neurocognitive changes (i.e., cognitive decline, functional status decline, and motor function change) in older adults.

Methods: We conducted a retrospective cohort study using the National Alzheimer’s Coordinating Center Uniform Data Set (UDS; September 2005-March 2021 data freeze). From the eligible sample (≥age 65 years), we identified cognitively normal new-users of gabapentin and the visit they initiated gabapentin (i.e., index visit). Initiators were matched to randomly selected nonusers on year …

Effect Of Pharmacist Intervention On Emergency Department Geriatric Patients With Polypharmacy, Rachael Sheehan, Ashley Stajkowski, Lee Hraby, Melanie Mommaerts, Tyler Nichols, Marisa Nichols, Alex Beuning, Victor Warne

Journal of Geriatric Emergency Medicine

Background: Polypharmacy is common within the geriatric population due to the commonality of multiple comorbidities and use of multiple providers. The emergency department (ED) is a prime location to capture these patients, especially when they present with chief complaints which may be medication related. Much of this population is prescribed potentially inappropriate medications which increases their risk for adverse drug reactions. Pharmacist review of patient home medication lists has been shown to decrease the number of potentially inappropriate medications, as well as medication-related problems, such as therapeutic duplications and drug interactions. These reductions can increase patient safety.

Objective: The goal …

Post-Developmental Plasticity Of The Primary Rod Pathway Allows Restoration Of Visually Guided Behaviors, Yan Cao, Diego Fajardo, Debbie Guerrero-Given, Melanie A Samuel, Toshihisa Ohtsuka, Shannon E Boye, Naomi Kamasawa, Kirill A Martemyanov

Center on Aging Staff Publications

Formation of neural circuits occurs in a programmed fashion, but proper activity in the circuit is essential for refining the organization necessary for driving complex behavioral tasks. In the retina, sensory deprivation during the critical period of development is well known to perturb organization of the visual circuit making the animals unable to use vision for behavior. However, the extent of plasticity, molecular factors involved and malleability of individual channels in the circuit to manipulations outside of the critical period are not well understood. In this study we selectively disconnected and reconnected rod photoreceptors in mature animals after completion of …

Use Of Text Messaging For Type Two Diabetes Management In Patients Over Sixty-Five, Charles Head

Master of Science in Nursing Family Nurse Practitioner

Why is there a need for tight glucose control for diabetics sixty-five years old or older? Tight control of glucose which can be trended as a 90-day snapshot of blood sugar control is measured using HgA1C levels(Centers for Disease Control and Prevention, 2019). HgA1c levels under six percent in diabetics have been shown to reduce diabetic complications that be detrimental to health(Krapek et al., 2004). Adults aged sixty-five years old or older are also at greater risk for the development of acute and chronic diseases that are a result of poor blood sugar management(Leung et al., 2018). Adherence to prescribed …

Prevalence Of Sleep-Related Problems And Risks In A Community-Dwelling Older Adult Population: A Cross-Sectional Survey-Based Study, Nancy P Gordon, Jimmy H Yao, Leslea A Brickner, Joan C Lo

Faculty, Staff and Student Publications

BACKGROUND: Despite evidence of adverse health consequences of inadequate restorative sleep for older adults, assessment of sleep quantity, quality, and use of sleep aids is not routinely done. We aimed to characterize sleep problems, sleep risks, and advice received about sleep in a community-dwelling older adult population, overall and in subgroups with health conditions and functional difficulties.

METHODS: This cross-sectional study used weighted self-report data for 5074 Kaiser Permanente Northern California members aged 65-79y who responded to a 2017 or 2020 Member Health Survey. We estimated usual amount of sleep (< 6, 6 to < 7, ≥7 hours) and prevalence of sleep problems (frequent insomnia, frequent daytime fatigue, poor quality sleep, and potential sleep apnea (OSA) symptoms (frequent very loud snoring, apnea episodes)) for older adults overall, by self-rated health, and in subgroups reporting hypertension, diabetes, heart disease, frequent problems with balance/walking, and frequent memory problems. We also estimated percentages who regularly used sleep aids and had discussed sleep adequacy with a healthcare professional in the past year.

RESULTS: Approximately 30% of older adults usually got less …

Deep Learning Algorithm Reveals Probabilities Of Stage-Specific Time To Conversion In Individuals With Neurodegenerative Disease Late, Xinxing Wu, Chong Peng, Peter T. Nelson, Qiang Cheng

Sanders-Brown Center on Aging Faculty Publications

Introduction: Limbic-predominant age-related TAR DNA-binding protein 43 (TDP-43) encephalopathy (LATE) is a recently defined neurodegenerative disease. Currently, there is no effective way to make a prognosis of time to stage-specific future conversions at an individual level.

Methods: After using the Kaplan–Meier estimation and log-rank test to confirm the heterogeneity of LATE progression, we developed a deep learning–based approach to assess the stage-specific probabilities of time to LATE conversions for different subjects.

Results: Our approach could accurately estimate the disease incidence and transition to next stages: the concordance index was at least 82% and the integrated Brier score …

Examining The Effects Of Formal Education Level On The Montreal Cognitive Assessment, Renee S. White, Justin M. Barber, Jordan P. Harp, Gregory A. Jicha

Sanders-Brown Center on Aging Faculty Publications

Background: Brief, global assessments such as the Montreal Cognitive Assessment (MoCA) are widely used in primary care for assessing cognition in older adults. Like other neuropsychological instruments, lower formal education can influence MoCA interpretation.

Methods: Data from 2 large studies of cognitive aging were used—Alzheimer’s Disease Neuroimaging Initiative (ADNI) and National Alzheimer’s Coordinating Center (NACC). Both use comprehensive examinations to determine cognitive status and have brain amyloid status for many participants. Mixed models were used to account for random variation due to data source.

Results: Cognitively intact participants with lower education (≤12 years) were more likely than …

Multiple Gene Variants Linked To Alzheimer's-Type Clinical Dementia Via Gwas Are Also Associated With Non-Alzheimer's Neuropathologic Entities, Yuriko Katsumata, Lincoln M. P. Shade, Timothy J. Hohman, Julie A. Schneider, David A. Bennett, Jose M. Farfel, Walter A. Kukull, David W. Fardo, Peter T. Nelson

Sanders-Brown Center on Aging Faculty Publications

The classic pathologic hallmarks of Alzheimer’s disease (AD) are amyloid plaques and neurofibrillary tangles (AD neuropathologic changes, or ADNC). However, brains from individuals clinically diagnosed with “AD-type” (amnestic) dementia usually harbor heterogeneous neuropathologies in addition to, or other than, ADNC. We hypothesized that some AD-type dementia associated genetic single nucleotide variants (SNVs) identified from large genomewide association studies (GWAS) were associated with non-ADNC neuropathologies. To test this hypothesis, we analyzed data from multiple studies with available genotype and neuropathologic phenotype information. Clinical AD/dementia risk alleles of interest were derived from the very large GWAS by Bellenguez et al. (2022) who …

Use Of A Microsimulation Method For Assessing Dynamics Of Smoking Status And Gains In Life Expectancy After Quitting In A Longitudinal Cohort Of Us Older Adults, Haomiao Jia, Erica I. Lubetkin

Publications and Research

Objectives: Previous studies were unable to estimate the dynamics of smoking status in the US elderly general population, and no study has assessed the benefit of quitting in terms of resultant gains in life expectancy. We proposed a novel method to estimate the per cent of quitting in remaining lifetime, successful quitting and relapse, as well as life expectancy by participants' baseline smoking status.

Design: Longitudinal cohort.

Setting: US community-dwelling population.

Participants: Respondents from the Medicare Health Outcome Survey Cohort 15 (baseline 2012, follow-up 2014). We included respondents who were aged ≥65 years and alive at the baseline and participated …

Key Healthcare Providers’ Perspectives On The Implementation Of Senior-Friendly Emergency Department Care In Quebec, Deniz Cetin-Sahin, Francine Ducharme, Jane Mccusker, Mona Magalhaes, Nathalie Veillette, Paul-André Lachance, Sylvie Cossette, Alain Vadeboncoeur, Rick Mah, T.T. Minh Vu, Simon Berthelot

Journal of Geriatric Emergency Medicine

Background: Senior-friendly emergency department (ED) care is emerging to address large numbers of older adults in healthcare and implementation is variable.

Objectives: We aimed to explore key healthcare providers’ perspectives on factors affecting implementation of senior-friendly ED care during the first five years of the Senior-Friendly Hospital Initiative in the Province of Quebec, Canada.

Methods: We conducted a descriptive qualitative study of four urban EDs. Key healthcare providers involved in care within the ED or after discharge to the community were purposefully selected. Semi-structured telephone interviews were conducted in participants’ preferred language, English or French. Recorded interviews were transcribed. A …

Objective Assessment Of Upper-Extremity Motor Functions In Spinocerebellar Ataxia Using Wearable Sensors, Reza Mohammadi-Ghazi, Hung Nguyen, Ram Kinker Mishra, Ana Enriquez, Bijan Najafi, Christopher D Stephen, Anoopum S Gupta, Jeremy D Schmahmann, Ashkan Vaziri

Center on Aging Staff Publications

The study presents a novel approach to objectively assessing the upper-extremity motor symptoms in spinocerebellar ataxia (SCA) using data collected via a wearable sensor worn on the patient’s wrist during upper-extremity tasks associated with the Assessment and Rating of Ataxia (SARA). First, we developed an algorithm for detecting/extracting the cycles of the finger-to-nose test (FNT). We extracted multiple features from the detected cycles and identified features and parameters correlated with the SARA scores. Additionally, we developed models to predict the severity of symptoms based on the FNT. The proposed technique was validated on a dataset comprising the seventeen (n …

Cost-Benefit Analysis Of The Cope Program For Persons Living With Dementia: Toward A Payment Model, Laura T Pizzi, Eric Jutkowitz, Katherine M Prioli, Ember Yiwei Lu, Zachary Babcock, Heather Mcabee-Sevick, Dorothy B Wakefield, Julie Robison, Sheila Molony, Catherine V. Piersol, Laura N Gitlin, Richard H Fortinsky

Department of Occupational Therapy Faculty Papers

Background and objectives: There is a critical need for effective interventions to support quality of life for persons living with dementia and their caregivers. Growing evidence supports nonpharmacologic programs that provide care management, disease education, skills training, and support. This cost-benefit analysis examined whether the Care of Persons with Dementia in their Environments (COPE) program achieves cost savings when incorporated into Connecticut's home- and community-based services (HCBS), which are state- and Medicaid-funded.

Research design and methods: Findings are based on a pragmatic trial where persons living with dementia and their caregiver dyads were randomly assigned to COPE with HCBS, or …

Emergency Medicine Provider Comfort With Physician Orders For Life Sustaining Treatment (Polst) Advanced Directive, Katherine Briggie, Kaitlin Sweeney, Shannon Findlay, Hao Wang, Juan Pagan-Ferrer, Dan Miller, Sangil Lee

Journal of Geriatric Emergency Medicine

Background

Emergency departments (ED) across the United States see many patients with advanced disease nearing the end of life. ED providers make many important decisions that impact a patient’s hospital course, including resuscitation decisions. When patients’ preferences are not known, treatment in the ED frequently defaults to maximally aggressive care. The Physician Orders for Life Sustaining Treatment (POLST) form has been shown to lead to more goal-concordant care for these patients by providing detailed instructions regarding end-of-life interventions, made by the patient and/or medical decision maker.

Methods

In this needs assessment study, we aimed to determine the level of awareness …

Ags And Nia Bench-To Bedside Conference Summary: Cancer And Cardiovascular Disease, Supriya Mohile, Caroline S Blaum, Peter M Abadir, William Dale, Daniel E Forman, Chunkit Fung, Holly M Holmes, Javid Moslehi, Karen M Mustian, Michael W Rich, Heather E Whitson

Faculty, Staff and Student Publications

This report summarizes the presentations, discussions, and recommendations of the most recent American Geriatrics Society and National Institute on Aging research conference, "Cancer and Cardiovascular Disease," on October 18-19, 2021. The purpose of this virtual meeting was to address the interface between cancer and heart disease, which are the two leading causes of death among older Americans. Age-related physiologic changes are implicated in the pathogenesis of both conditions. Emerging data suggest that cancer-related cardiovascular disease (CVD) involves disrupted cell signaling and cellular senescence. The risk factors for CVD are also risk factors for cancer and an increased likelihood of cancer …

The Effect Of The Care Transitions Intervention On Ed Revisits And Outpatient Clinic Follow-Up Among Older Adults Who Live Alone, Clara V. Kuranz, Rebecca K. Green, Angela Gifford, Gwen C. Jacobsohn, Thomas V. Caprio, Amy L. Cochran, Jeremy T. Cushman, Courtney M.C. Jones, Amy J. H. Kind, Michael Lohmeier, Manish N. Shah

Journal of Geriatric Emergency Medicine

INTRODUCTION: Older adults frequently return to an emergency department (ED) within 30 days of an initial visit. In this study, we examined the effectiveness of an adapted Care Transitions Intervention (CTI) at reducing risk of ED revisits within 30 days for older adults who live alone. We also explored the interaction between receiving help with healthcare needs and receiving the CTI on the risk of 30-day ED revisits.

METHODS: We conducted a subgroup analysis of community-dwelling older (age≥60 years) ED patients who reported living alone as part of a randomized controlled trial of CTI effectiveness following discharge home from one …

The Intersection Between Toxicology And Aging Research: A Toxic Aging Coin Perspective., John P. Wise Jr.

Faculty and Staff Scholarship

We are imminently faced with the challenges of an increasingly aging population and longer lifespans due to improved health care. Concomitantly, we are faced with ubiquitous environmental pollution linked with various health effects and age-related diseases which contribute to increased morbidity with age. Geriatric populations are rarely considered in the development of environmental regulations or in toxicology research. Today, life expectancy is often into one’s 80s or beyond, which means multiple decades living as a geriatric individual. Hence, adverse health effects and late-onset diseases might be due to environmental exposures as a geriatric, and we currently have no way of …