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Relationships Among Development, Growth, Body Size, Reproduction, Aging, And Longevity - Trade-Offs And Pace-Of-Life., Rong Yuan, Erin Hascup, Kevin Hascup, Andrzej Bartke Nov 2023

Relationships Among Development, Growth, Body Size, Reproduction, Aging, And Longevity - Trade-Offs And Pace-Of-Life., Rong Yuan, Erin Hascup, Kevin Hascup, Andrzej Bartke

Articles

Relationships of growth, metabolism, reproduction, and body size to the biological process of aging and longevity have been studied for decades and various unifying "theories of aging" have been proposed to account for the observed associations. In general, fast development, early sexual maturation leading to early reproductive effort, as well as production of many offspring, have been linked to shorter lifespans. The relationship of adult body size to longevity includes a remarkable contrast between the positive correlation in comparisons between different species and the negative correlation seen in comparisons of individuals within the same species. We now propose that longevity …


Factors Associated With Depressive Symptoms Among Community-Dwelling Older People In East-Coast Malaysia, Siti Suhana Zakaria, Siti Nur Illiani Jaafar, Muhammad Kamil Che Hasan, Nik Noor Kaussar Nik Mohd Hatta, Wan Nor Aliza Wan Abdul Rahman Nov 2023

Factors Associated With Depressive Symptoms Among Community-Dwelling Older People In East-Coast Malaysia, Siti Suhana Zakaria, Siti Nur Illiani Jaafar, Muhammad Kamil Che Hasan, Nik Noor Kaussar Nik Mohd Hatta, Wan Nor Aliza Wan Abdul Rahman

Jurnal Keperawatan Indonesia

Older people are increasing in number globally, and they are likely to have mental health problems, including de- pression. In this population, the risk of having depressive symptoms is very high due to multidimensional factors, but these symptoms are often undertreated. This study aimed to determine the prevalence and associated factors of de- pressive symptoms among community-dwelling older people living on the East Coast of Malaysia. A cross-sectional study was conducted in several areas of the state of Terengganu based on multilayered stratified sampling. A total of 240 participants were randomly selected. Several instruments were employed, such as the Geriatric …


Effects Of Aging On Post-Exercise Oxygen Consumption: A Preliminary Study, Steven Klepacz Nov 2023

Effects Of Aging On Post-Exercise Oxygen Consumption: A Preliminary Study, Steven Klepacz

Health, Exercise, and Sports Sciences ETDs

Aging and excess post-exercise oxygen consumption (EPOC) is something that has not been adequately studied. Studies looking at EPOC mostly are compiled of young college age individuals. Aging in humans is a topic of much research with still more to be learned. The study in this paper attempts to answer the question of whether age affects EPOC when performing a certain exercise. Preliminary findings based on general age-related research suggest the possibility. This thesis will explore the current research related to age and EPOC, analyze the findings, and discuss additional avenues for future research.


The Park Ridge Center Bulletin, 1998, N6, October/November, Advocate Aurora Health Nov 2023

The Park Ridge Center Bulletin, 1998, N6, October/November, Advocate Aurora Health

Historical Documents - Combined

The Park Ridge Center, Park Ridge, IL: Issue of "The Park Ridge Center Bulletin", a bi-monthly publication from The Park Ridge Center - An Institute for the Study of Health, Faith, and Ethics, associated with Lutheran General Hospital. This issue has feature articles on aging, elder care, and nursing homes.


Age & Dementia Friendly Plymouth: A Community Needs Assessment, Caitlin E. Coyle, Beth Rouleau, Ceara Somerville Nov 2023

Age & Dementia Friendly Plymouth: A Community Needs Assessment, Caitlin E. Coyle, Beth Rouleau, Ceara Somerville

Center for Social and Demographic Research on Aging Publications

This report describes research undertaken by the Center for Social & Demographic Research on Aging (CSDRA) within the Gerontology Institute at the University of Massachusetts Boston, on behalf of the Town of Plymouth. The goals of this project were to investigate the needs, interests, preferences, and opinions of Plymouth’s residents age 55 or older in support of the Council on Aging’s (COA’s) objective to identify and serve the needs of all Plymouth citizens 55 and older. The contents of this report are meant to inform the Town of Plymouth, the Plymouth COA, the Center for Active Living, and organizations that …


Depression By Gender And Associated Factors Among Older Adults In India: Implications For Age-Friendly Policies, Ronak Paul, T. Muhammad, Rashmi Rashmi, Palak Sharma, Shobhit Srivastava, Preeti Zanwar Oct 2023

Depression By Gender And Associated Factors Among Older Adults In India: Implications For Age-Friendly Policies, Ronak Paul, T. Muhammad, Rashmi Rashmi, Palak Sharma, Shobhit Srivastava, Preeti Zanwar

College of Population Health Faculty Papers

Inspite of implementing policies to control mental health problems, depression remains a severe health concern among older adults in India. We examined self-reported differences in the depression among older men and women in India and examined associated factors for gender differences in depression at the population level. We utilized nationally representative data from the Longitudinal Aging Study in India (LASI) wave I, for years 2017-2019. Our analytical sample comprised of 30,637 older adults ages 60 years and above (14,682 men and 15,655 women). We conducted descriptive statistics and Chi-Square tests followed by binary logistic regression and multivariate decomposition analyses to …


Embracing Digital Offboarding As A Design Challenge, Sabine Junginger Oct 2023

Embracing Digital Offboarding As A Design Challenge, Sabine Junginger

IASDR Conference Series

Most services we will use or rely on in the future will either contain a digital component or be fully digital. Given the multitude of pressures that are currently reshaping the public sector, great efforts are underway to increase the range of digital public service offerings. Design research and design practice currently contribute to the development of innovative digital public services. In addition, designers support the onboarding experience for people working in public administrations and the members of the public who benefit from or depend on these. This paper argues that we need to explore the needs and implications of …


Social Determinants Of Health And Disparate Disability Accumulation In A Cohort Of Black, Hispanic, And White Patients With Multiple Sclerosis, Michael C Robertson, Brian Downer, Paul E Schulz, Rafael Samper-Ternent, Elizabeth J Lyons, Sadaf Arefi Milani Oct 2023

Social Determinants Of Health And Disparate Disability Accumulation In A Cohort Of Black, Hispanic, And White Patients With Multiple Sclerosis, Michael C Robertson, Brian Downer, Paul E Schulz, Rafael Samper-Ternent, Elizabeth J Lyons, Sadaf Arefi Milani

Faculty, Staff and Student Publications

OBJECTIVES: Mexico has a rapidly aging population at risk for cognitive impairment. Social and leisure activities may protect against cognitive decline in older adults. The benefits of these behaviors may vary by patterns of cognitive impairment. The objectives of this study were to identify latent states of cognitive functioning, model the incidence of transitions between these states, and investigate how social and leisure activities were associated with state transitions over a 6-year period in Mexican adults aged 60 and older.

METHODS: We performed latent transition analyses to identify distinct cognitive statuses in the 2012 and 2018 waves of the Mexican …


Designing A Human-Centered Intelligent System To Monitor & Explain Abnormal Patterns Of Older Adults, Min Hun Lee, Daniel P. Siewiorek, Alexandre Bernardino Oct 2023

Designing A Human-Centered Intelligent System To Monitor & Explain Abnormal Patterns Of Older Adults, Min Hun Lee, Daniel P. Siewiorek, Alexandre Bernardino

Research Collection School Of Computing and Information Systems

Older adult care technologies are increasingly explored to support the independent living of older adults by monitoring their abnormal activities and informing caregivers to provide intervention if necessary. However, the adoption of these technologies remains challenging due to several factors (e.g. lack of usability). In this work, we present a human-centered, intelligent system for older adult care. Our proposed designs of the system were created based on the findings from a focus group session with caregivers. This system monitors the abnormal activities of an older adult using wireless motion sensors and machine learning models. In addition, unlike previous work that …


Longitudinal Associations Between Cognitive Functioning And Depressive Symptoms Among Couples In The Mexican Health And Aging Study, Joan K Monin, Gail Mcavay, Katie Newkirk, Rafael Samper-Ternent Oct 2023

Longitudinal Associations Between Cognitive Functioning And Depressive Symptoms Among Couples In The Mexican Health And Aging Study, Joan K Monin, Gail Mcavay, Katie Newkirk, Rafael Samper-Ternent

Faculty, Staff and Student Publications

OBJECTIVE: To examine the bidirectional associations between older adult spouses' cognitive functioning and depressive symptoms over time and replicate previous findings from the United States (US) in Mexico.

DESIGN: Longitudinal, dyadic path analysis with the actor-partner interdependence model.

SETTING: Data were from the three most recent interview waves (2012, 2015, and 2018) of the Mexican Health and Aging Study (MHAS), a longitudinal national study of adults aged 50+ years in Mexico.

PARTICIPANTS: Husbands and wives from 905 community-dwelling married couples (N = 1,810).

MEASUREMENTS: The MHAS cognitive battery measured cognitive function. Depressive symptoms were assessed using a modified nine-item Center …


Supporting Care Partners Of People Living With Dementia, Sherril Gelmon, Walter Dawson, Jenn Hollandsworth Reed Oct 2023

Supporting Care Partners Of People Living With Dementia, Sherril Gelmon, Walter Dawson, Jenn Hollandsworth Reed

OHSU-PSU School of Public Health Faculty Publications and Presentations

This report addresses the need to better support care partners of people living with dementia, including a proposal for a new Dementia Care Partner Hub (the “Hub”) that will facilitate care partner access to information, supports, services and activities. This work is the culmination of the “Supporting Care Partners of People Living with Alzheimer’s Disease and Related Dementias (ADRD)” project funded by the Portland State University Institute on Aging’s “Gerontology Education & Research Initiative” (GERI) faculty grant, conducted from June 2022 to October 2023. The project focused on addressing concerns and needs of care partners and people living with dementia …


Tnf Is A Critical Cytokine In Age-Related Dry Eye Disease, Yashaswini Kelagere, Kaitlin K Scholand, Erica N Dejong, Andrea I Boyd, Zhiyuan Yu, Roger A Astley, Michelle C Callegan, Dawn Me Bowdish, Helen P Makarenkova, Cintia S De Paiva Oct 2023

Tnf Is A Critical Cytokine In Age-Related Dry Eye Disease, Yashaswini Kelagere, Kaitlin K Scholand, Erica N Dejong, Andrea I Boyd, Zhiyuan Yu, Roger A Astley, Michelle C Callegan, Dawn Me Bowdish, Helen P Makarenkova, Cintia S De Paiva

Faculty, Staff and Students Publications

Aging is a complex biological process that is characterized by low-grade inflammation, called inflammaging. Aging affects multiple organs including eye and lacrimal gland. Tumor necrosis factor (TNF) is a pleiotropic cytokine that participates in inflammation, activation of proteases such as cathepsin S, and formation of ectopic lymphoid organs. Using genetic and pharmacological approaches, we investigated the role of TNF in age-related dry eye disease, emphasizing the ocular surface and lacrimal gland inflammation. Our results show the increased protein and mRNA levels of TNF in aged lacrimal glands, accompanied by increased TNF, IL1β, IL-18, CCL5, CXCL1, IL-2, IL-2 receptor alpha (CD25), …


Social Connectedness Between Family Caregivers And Older Adults Living In Long-Term Care Homes In The Context Of Covid-19, Anna Garnett, Hannah Pollock, Natalie Floriancic, Kristin Prentice, Lorie Donelle Phd, Rn, Fcan, Carri Hand, Abe Oudshoorn, Yolanda Babenko-Mould, Cheryl Forchuk Sep 2023

Social Connectedness Between Family Caregivers And Older Adults Living In Long-Term Care Homes In The Context Of Covid-19, Anna Garnett, Hannah Pollock, Natalie Floriancic, Kristin Prentice, Lorie Donelle Phd, Rn, Fcan, Carri Hand, Abe Oudshoorn, Yolanda Babenko-Mould, Cheryl Forchuk

Publications

The coronavirus disease (COVID-19) pandemic and resulting restrictions on physical access to long-term care homes culminated in health declines for older adults living there and their families. Knowledge gaps exist regarding maintaining social connectedness when physically separated. The study aimed to explore family members' perceptions of the impact that restrictions on physical access to long-term care homes had on the experience of social connectedness between family members and older adults living in long-term care. The method used was a qualitative description, using in-depth semi-structured interviews. Themes arising from inductive qualitative content analysis of 21 interviews with family members included: (a) …


Regulating The Care Boom: Labor Standards Enforcement And Paid In-Home Care Work, Isaac Jabola-Carolus Sep 2023

Regulating The Care Boom: Labor Standards Enforcement And Paid In-Home Care Work, Isaac Jabola-Carolus

Dissertations, Theses, and Capstone Projects

In the United States, population aging has driven explosive growth in care-sector occupations, especially among low-wage home care aides who provide long-term assistance to older adults. These aides, predominantly women and disproportionately people of color, now represent one of the country’s largest and fastest-growing occupational groups. In recent decades, economic inequality and meager social policies have also spurred demand for nannies, housecleaners, and other domestic workers—occupations heavily reliant on immigrant women, many undocumented. While scholarly and public discourse has addressed labor shortages and job quality in such occupations, a related problem is the widespread violation of labor standards, including minimum …


Illness Intrusiveness And Psychosocial Adjustment Among Older Adults With Multimorbidity, Irina Mindlis Sep 2023

Illness Intrusiveness And Psychosocial Adjustment Among Older Adults With Multimorbidity, Irina Mindlis

Dissertations, Theses, and Capstone Projects

Given the high prevalence of multimorbidity (MM) among older adults and the exponential growth of the older adult U.S. population, identifying factors that can lessen depressive symptoms and improve quality of life (QOL) in this population is timely and important. While it is well established that MM is associated with greater depressive symptoms and poorer QOL (Li et al., 2016; Makovski et al., 2019; Marengoni et al., 2011; Read et al., 2017), the mechanisms underlying these relationships remain understudied. The illness intrusiveness model (Devins et al., 1984) proposes that stressors posed by diseases (disease-related factors) and their treatments (treatment-related factors) …


Designing Social Connection: Older Adults And The Infrastructure Of Social Encounters, Bomin Kim Aug 2023

Designing Social Connection: Older Adults And The Infrastructure Of Social Encounters, Bomin Kim

Graduate School of Architecture & Urban Design Theses & Dissertations

In recent decades, public space has gained significant attention in both design theory and practice as a critical components of sustainable development for older adults. With growing concerns about social disconnect, economic inequality, and environmental injustice, the revitalization of public space has become a critical piece in creating safe and just cities to foster social connection, health, and resilience for our aging population. I argue in this dissertation that older adults rely on an infrastructure of encounters to navigate social life and that designers and policymakers should critically examine how public spaces distribute and burden labor necessary to create weak …


Abstracts From The 2023 Health Care Systems Research Network (Hcsrn) Annual Conference, Denver, Colorado Jul 2023

Abstracts From The 2023 Health Care Systems Research Network (Hcsrn) Annual Conference, Denver, Colorado

Journal of Patient-Centered Research and Reviews

The Health Care Systems Research Network (HCSRN) is comprised of 20 learning health systems with embedded population-based research units. The network’s annual conference serves as a forum for research teams from member institutions to disseminate project findings, explore scientific collaborations, and share insights about conducting research in real-world care delivery settings. Abstracts presented at HCSRN 2023 are published in this issue supplement of Journal of Patient-Centered Research and Reviews, the journal of record for HCSRN’s annual conference proceedings.


Targeting Energy Intake And Circadian Biology To Engage Mechanisms Of Aging In Older Adults With Obesity: Calorie Restriction And Time-Restricted Eating, Satchidananda Panda, Geraldine Maier, Dennis T Villareal Jun 2023

Targeting Energy Intake And Circadian Biology To Engage Mechanisms Of Aging In Older Adults With Obesity: Calorie Restriction And Time-Restricted Eating, Satchidananda Panda, Geraldine Maier, Dennis T Villareal

Faculty, Staff and Students Publications

With the rise in obesity across age groups, it has been a hindrance to engaging in physical activity and mobility in older adults. Daily calorie restriction (CR) up to 25% has been the cornerstone of obesity management even though the safety in older adults remains incompletely understood. Although some adults can follow CR with clinically significant weight loss and improved health metrics, CR faces 2 obstacles-many fail to adopt CR and even among those who can adopt it short term, long-term compliance can be difficult. Furthermore, there is a continuing debate about the net benefits of CR-induced weight loss in …


Assessing The Correlation Between The Socioeconomic Level And Cognitive Function Among Older Adults In Egypt, Macy Abougabal Jun 2023

Assessing The Correlation Between The Socioeconomic Level And Cognitive Function Among Older Adults In Egypt, Macy Abougabal

Theses and Dissertations

The number of older adults is increasing worldwide at an unprecedented rate. Some countries began to understand the challenges of aging, while others are still at the stage of comprehending the true dimensions of the situation. There is a global focus on aging research to appropriately mitigate the negative impact of aging and cognitive decline. Not only that dementia add economic pressure on governments, it also increase the psychological and physical burden of the caregivers. Scholars have previously studied socioeconomic level in three variables, namely work, education, and income, and their relationship with cognitive function. It was concluded that the …


Shared Care Networks Assisting Older Adults: New Insights From The National Health And Aging Trends Study, Mengyao Hu, Vicki A Freedman, Sarah E Patterson, Nora Lewis Jun 2023

Shared Care Networks Assisting Older Adults: New Insights From The National Health And Aging Trends Study, Mengyao Hu, Vicki A Freedman, Sarah E Patterson, Nora Lewis

Faculty, Staff and Student Publications

BACKGROUND AND OBJECTIVES: Caregiving research often assumes older adults receiving care have a primary caregiver who provides the bulk of care. Consequently, little is known about the extent to which care responsibilities are shared more evenly within a care network, the characteristics associated with sharing, or the consequences for meeting older adults' care needs.

RESEARCH DESIGN AND METHODS: We analyze a sample of U.S. older adults receiving care from the 2011 National Health and Aging Trends Study (n = 2,398). Based on variables reflecting differences in care hours, activities, and care provided by the whole network, we create network typologies …


Aging In Brockton: A Community Needs Assessment, Caitlin E. Coyle, Setarreh Massihzadegan, Josef Kijewski, Ceara Somerville Jun 2023

Aging In Brockton: A Community Needs Assessment, Caitlin E. Coyle, Setarreh Massihzadegan, Josef Kijewski, Ceara Somerville

Center for Social and Demographic Research on Aging Publications

This report describes research undertaken by the Center for Social & Demographic Research on Aging (CSDRA) within the Gerontology Institute at the University of Massachusetts Boston, on behalf of the City of Brockton. The goals of this project were to investigate the needs, interests, preferences, and opinions of Brockton’s residents age 60 or older by engaging the community regarding their experiences and needs relevant to the COA’s objective to identify and serve the needs of all Brockton citizens 60 and older. The contents of this report are meant to inform the City of Brockton, the Brockton COA, Senior Center, and …


Introduction, Marama Muru-Lanning, Hilary Lapsley Jun 2023

Introduction, Marama Muru-Lanning, Hilary Lapsley

Pacific Studies

This special issue of Pacific Studies focuses on well-being amongst indigenous Pacific elders. Well-being is a widely used concept, but research is lacking on how well-being is understood in Oceania. This issue involves studies on the well-being of elders from Rotuma, Papua New Guinea and Pollap, as well as Māori and Pacific peoples in Aotearoa/New Zealand.

Our collection emphasizes two pou, or posts, supporting well-being amongst Pacific elders. The first, aging in place, has a Pacific twist, where homeplaces are whenua, ancestral places of deep connection imbued with cultural and relational significance. Vā, meaning relational space, is a related concept. …


Vol. 46 No. 1 (2023): Pacific Studies Full Issue, The Jonathan Nāpela Center For Hawaiian And Pacific Islands Studies Jun 2023

Vol. 46 No. 1 (2023): Pacific Studies Full Issue, The Jonathan Nāpela Center For Hawaiian And Pacific Islands Studies

Pacific Studies

Pacific Studies is published two times a year by The Jonathan Nāpela Center for Hawaiian and Pacific Studies, Brigham Young University Hawai‘i #1979, 55–220 Kulanui Street, Lā ‘ie, Hawai‘i 96762, but responsibility for opinions expressed in the articles rests with the authors alone. Subscription rate is US$40.00 yearly, payable to The Jonathan Nāpela Center for Hawaiian and Pacific Studies. The Jonathan Nāpela Center for Hawaiian and Pacific Studies (formerly The Pacific Institute) is an organization funded by Brigham Young University Hawai‘i. The Center assists the University in meeting its cultural and educational goals by undertaking a program of teaching, research, …


Aging And Well-Being On Rotuma In Historical Perspective, Alan Howard, Jan Rensel Jun 2023

Aging And Well-Being On Rotuma In Historical Perspective, Alan Howard, Jan Rensel

Pacific Studies

In this article, we present a historical overview of the conditions affecting the experience of aging among Rotumans on their home island. We draw on an array of cultural, social, and personal data derived from censuses, fieldwork, and archival sources covering more than one hundred years on Rotuma, which we divide into three segments for comparison: a baseline period (1903–60), the transition to modernity (1960–99), and the twenty-first century (2000–19). Among the changes that have affected the welfare of the elderly on the island are medical conditions, household size and composition, economic changes, and the proportion of older people on …


Cellular Senescence And Frailty In Transplantation, Elizabeth C Lorenz, Latonya J Hickson, Pascale Khairallah, Bijan Najafi, Cassie C Kennedy Jun 2023

Cellular Senescence And Frailty In Transplantation, Elizabeth C Lorenz, Latonya J Hickson, Pascale Khairallah, Bijan Najafi, Cassie C Kennedy

Center on Aging Staff Publications

Purpose of review: To summarizes the literature on cellular senescence and frailty in solid-organ transplantation and highlight the emerging role of senotherapeutics as a treatment for cellular senescence.

Recent findings: Solid-organ transplant patients are aging. Many factors contribute to aging acceleration in this population, including cellular senescence. Senescent cells accumulate in tissues and secrete proinflammatory and profibrotic proteins which result in tissue damage. Cellular senescence contributes to age-related diseases and frailty. Our understanding of the role cellular senescence plays in transplant-specific complications such as allograft immunogenicity and infections is expanding. Promising treatments, including senolytics, senomorphics, cell-based regenerative therapies, and behavioral …


Nicotinamide Riboside And Beta-Hydroxybutyrate Activate Parallel Pathways For C. Elegans Lifespan Extension, Mckenzie Peters May 2023

Nicotinamide Riboside And Beta-Hydroxybutyrate Activate Parallel Pathways For C. Elegans Lifespan Extension, Mckenzie Peters

Undergraduate Honors Theses

Supplementation with nicotinamide riboside (NR), a form of vitamin B3 and a precursor of nicotinamide adenine dinucleotide (NAD+) extends lifespan in the nematode C. elegans and delays aging-related pathologies in mammals. During aging, levels of NAD+ decline causing metabolic dysfunction and oxidative damage. Studies in C. elegans found that when NR was administered during larval development it induced the mitochondrial unfolded protein response (UPRmt), which is frequently associated with lifespan extension. Both calorie restriction (CR) and ketogenic diets (KD) have been shown to extend lifespan, in part through increasing NAD+ and through increasing levels …


Obstacle Crossing In Healthy Young And Older Individuals, Hope M. Hanson, Ashlyn M. Jendro, Abigail C. Schmitt May 2023

Obstacle Crossing In Healthy Young And Older Individuals, Hope M. Hanson, Ashlyn M. Jendro, Abigail C. Schmitt

Health, Human Performance and Recreation Undergraduate Honors Theses

Introduction: In the United States, the average population age is rising and will continue to increase in the coming years.With an older population comes increased risk of injury associated with falls. Falls are considered a leading cause of injury and death in older individuals, and many falls are caused by body imbalance or obstacle collision due to a clearly visible stationary object (e.g., rug, chair, branch). Older adults tend to cross obstacles with increased toe clearance in order to prevent tripping, but much of what is known about obstacle crossing in older adults is limited to artificial obstacles that are …


Gender, Personality, And Cognitive Resilience Against Early-Life Disadvantage, Joseph L. Saenz, Sadaf Arefi Milani, Silvia Mejia-Arango May 2023

Gender, Personality, And Cognitive Resilience Against Early-Life Disadvantage, Joseph L. Saenz, Sadaf Arefi Milani, Silvia Mejia-Arango

School of Medicine Publications

Objectives: Early-life disadvantage (ELD) relates to lower late-life cognition. However, personality factors, including having an internal locus of control (LOC) or a conscientious personality, relate to resilience and effective stress coping. We explore whether personality factors convey resilience against the negative effects of ELD on cognition, by gender, in Mexico.

Methods: Using the 2015 Mexican Health and Aging Study, we estimated expected cognition using multiple ELD markers to identify a subsample in the lowest quartile of expected cognition given ELD (n = 2,086). In this subsample, we estimated cross-sectional associations between personality and having above-median observed cognitive ability (n = …


Genetic Loci Of Beta-Aminoisobutyric Acid Are Associated With Aging-Related Mild Cognitive Impairment, Einat Granot-Hershkovitz, Brian Spitzer, Yunju Yang, Wassim Tarraf, Bing Yu, Eric Boerwinkle, Myriam Fornage, Thomas H Mosley, Charles Decarli, Bruce S Kristal, Hector M González, Tamar Sofer Apr 2023

Genetic Loci Of Beta-Aminoisobutyric Acid Are Associated With Aging-Related Mild Cognitive Impairment, Einat Granot-Hershkovitz, Brian Spitzer, Yunju Yang, Wassim Tarraf, Bing Yu, Eric Boerwinkle, Myriam Fornage, Thomas H Mosley, Charles Decarli, Bruce S Kristal, Hector M González, Tamar Sofer

Faculty, Staff and Student Publications

We studied the genetic associations of a previously developed Metabolomic Risk Score (MRS) for Mild Cognitive Impairment (MCI) and beta-aminoisobutyric acid metabolite (BAIBA)-the metabolite highlighted by results from a genome-wide association study (GWAS) of the MCI-MRS, and assessed their association with MCI in datasets of diverse race/ethnicities. We first performed a GWAS for the MCI-MRS and BAIBA, in Hispanic/Latino adults (n = 3890) from the Hispanic Community Health Study/Study of Latinos (HCHS/SOL). We identified ten independent genome-wide significant (p value <5 × 10-8) variants associated with MCI-MRS or BAIBA. Variants associated with the MCI-MRS are located in the Alanine-Glyoxylate Aminotransferase 2 (AGXT2 gene), which is known to be associated with BAIBA metabolism. Variants associated with BAIBA are located in the AGXT2 gene and in the SLC6A13 gene. Next, we tested the variants' association with MCI in independent datasets of n = 3178 HCHS/SOL older individuals, n = 3775 European Americans, and n = 1032 African Americans from the Atherosclerosis Risk In Communities (ARIC) study. Variants were considered associated with MCI if their p value <0.05 in the meta-analysis of the three datasets and their direction of association was consistent with expectation. Rs16899972 and rs37369 from the AGXT2 region were associated with MCI. Mediation analysis supported the mediation effect of BAIBA between the two genetic variants and MCI (p value = 0.004 for causal mediated effect). In summary, genetic variants in the AGXT2 region are associated with MCI in Hispanic/Latino, African, and European American populations in the USA, and their effect is likely mediated by changes in BAIBA levels.


The Effect Of A Pharmaceutical Ghrelin Agonist On Lifespan In C57bl/6j Male Mice: A Controlled Experiment, Kathryn A Kaiser, Inga Kadish, Thomas Van Groen, Daniel L Smith, Stephanie Dickinson, Beate Henschel, Erik S Parker, Andrew W Brown, David B Allison Apr 2023

The Effect Of A Pharmaceutical Ghrelin Agonist On Lifespan In C57bl/6j Male Mice: A Controlled Experiment, Kathryn A Kaiser, Inga Kadish, Thomas Van Groen, Daniel L Smith, Stephanie Dickinson, Beate Henschel, Erik S Parker, Andrew W Brown, David B Allison

Children’s Nutrition Research Center Staff Publications

Interventions for animal lifespan extension like caloric restriction (CR) have identified physiologic and biochemical pathways related to hunger and energy-sensing status as possible contributors, but mechanisms have not been fully elucidated. Prior studies using ghrelin agonists show greater food intake but no effect on lifespan in rodent models. This experiment in male C57BL/6J mice tested the influence of ghrelin agonism for perceived hunger, in the absence of CR, on longevity. Mice aged 4 weeks were allowed to acclimate for 2 weeks prior to being assigned (N = 60/group). Prior to lights off daily (12:12 cycle), animals were fed a ghrelin …