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Articles 121 - 150 of 188
Full-Text Articles in Geriatrics
Intracranial Injection Of Gammagard, A Human Ivig, Modulates The Inflammatory Response Of The Brain And Lowers AΒ In App/Ps1 Mice Along A Different Time Course Than Anti-AΒ Antibodies, Tiffany L. Sudduth, Abigail Greenstein, Donna M. Wilcock
Intracranial Injection Of Gammagard, A Human Ivig, Modulates The Inflammatory Response Of The Brain And Lowers AΒ In App/Ps1 Mice Along A Different Time Course Than Anti-AΒ Antibodies, Tiffany L. Sudduth, Abigail Greenstein, Donna M. Wilcock
Sanders-Brown Center on Aging Faculty Publications
Gammagard IVIg is a therapeutic approach to treat Alzheimer's disease currently in phase 3 clinical trials. Despite the reported efficacy of the approach the mechanism of action is poorly understood. We have previously shown that intracranial injection of anti-Aβ antibodies into the frontal cortex and hippocampus reveals important information regarding the time course of events once the agent is in the brain. In the current study we compared IVIg, mouse-pooled IgG, and the anti-Aβ antibody 6E10 injected intracranially into the frontal cortex and hippocampus of 7-month-old APP/PS1 mice. We established a time course of events ranging from 1 …
Comprehensive Behavioral Characterization Of An App/Ps-1 Double Knock-In Mouse Model Of Alzheimer's Disease, Scott J. Webster, Adam D. Bachstetter, Linda J. Van Eldik
Comprehensive Behavioral Characterization Of An App/Ps-1 Double Knock-In Mouse Model Of Alzheimer's Disease, Scott J. Webster, Adam D. Bachstetter, Linda J. Van Eldik
Sanders-Brown Center on Aging Faculty Publications
INTRODUCTION: Despite the extensive mechanistic and pathological characterization of the amyloid precursor protein (APP)/presenilin-1 (PS-1) knock-in mouse model of Alzheimer's disease (AD), very little is known about the AD-relevant behavioral deficits in this model. Characterization of the baseline behavioral performance in a variety of functional tasks and identification of the temporal onset of behavioral impairments are important to provide a foundation for future preclinical testing of AD therapeutics. Here we perform a comprehensive behavioral characterization of this model, discuss how the observed behavior correlates with the mechanistic and pathological observations of others, and compare this model with other commonly used …
Healthy Aging In Massachusetts: Reporting Indicators, Identifying Resources & Activating Allies, Elizabeth Dugan, Frank Porell, Nina Silverstein, Ruth Palombo, Chae Man Lee, Kristina Turk
Healthy Aging In Massachusetts: Reporting Indicators, Identifying Resources & Activating Allies, Elizabeth Dugan, Frank Porell, Nina Silverstein, Ruth Palombo, Chae Man Lee, Kristina Turk
Office of Community Partnerships Posters
In Massachusetts, a Healthy Aging Collaborative comprised of a diverse group of stakeholders has been formed for multiple purposes: information sharing around healthy aging, idea generation, partnership building and activity mapping.
Planning For The Growing Older Population: Conducting Community Needs Assessments, Caitlin Coyle, Hayley Gravette, Jan Mutchler, Gerontology Institute, University Of Massachusetts Boston
Planning For The Growing Older Population: Conducting Community Needs Assessments, Caitlin Coyle, Hayley Gravette, Jan Mutchler, Gerontology Institute, University Of Massachusetts Boston
Office of Community Partnerships Posters
Goals and Objectives: To describe the aging population of each community; To investigate the needs, interests and opinions of mature residents relating to their aging needs for age-related services in their respective communities; To provide recommendations to community partners and their stakeholders about how to create strong communities for older adults, based on needs assessment results; Generate reports and other documents to be used by the Department of Elder Services, other town offices, organizations that provide services, advocates, and community members.
Intracranial Injection Of Aav Expressing Nep But Not Ide Reduces Amyloid Pathology In App+Ps1 Transgenic Mice, Nikisha Carty, Kevin R. Nash, Milene Brownlow, Dana Cruite, Donna M. Wilcock, Maj-Linda B. Selenica, Daniel C. Lee, Marcia N. Gordon, Dave Morgan
Intracranial Injection Of Aav Expressing Nep But Not Ide Reduces Amyloid Pathology In App+Ps1 Transgenic Mice, Nikisha Carty, Kevin R. Nash, Milene Brownlow, Dana Cruite, Donna M. Wilcock, Maj-Linda B. Selenica, Daniel C. Lee, Marcia N. Gordon, Dave Morgan
Sanders-Brown Center on Aging Faculty Publications
The accumulation of β-amyloid peptides in the brain has been recognized as an essential factor in Alzheimer's disease pathology. Several proteases, including Neprilysin (NEP), endothelin converting enzyme (ECE), and insulin degrading enzyme (IDE), have been shown to cleave β-amyloid peptides (Aβ). We have previously reported reductions in amyloid in APP+PS1 mice with increased expression of ECE. In this study we compared the vector-induced increased expression of NEP and IDE. We used recombinant adeno-associated viral vectors expressing either native forms of NEP (NEP-n) or IDE (IDE-n), or engineered secreted forms of NEP (NEP-s) or IDE (IDE-s). In a six-week study, immunohistochemistry …
Bapineuzumab Alters Aβ Composition: Implications For The Amyloid Cascade Hypothesis And Anti-Amyloid Immunotherapy, Alex E. Roher, David H. Cribbs, Ronald C. Kim, Chera L. Maarouf, Charisse M. Whiteside, Tyler A. Kokjohn, Ian D. Daugs, Elizabeth Head, Carolyn Liebsack, Geidy Serrano, Christine Belden, Marwan N. Sabbagh, Thomas G. Beach
Bapineuzumab Alters Aβ Composition: Implications For The Amyloid Cascade Hypothesis And Anti-Amyloid Immunotherapy, Alex E. Roher, David H. Cribbs, Ronald C. Kim, Chera L. Maarouf, Charisse M. Whiteside, Tyler A. Kokjohn, Ian D. Daugs, Elizabeth Head, Carolyn Liebsack, Geidy Serrano, Christine Belden, Marwan N. Sabbagh, Thomas G. Beach
Sanders-Brown Center on Aging Faculty Publications
The characteristic neuropathological changes associated with Alzheimer's disease (AD) and other lines of evidence support the amyloid cascade hypothesis. Viewing amyloid deposits as the prime instigator of dementia has now led to clinical trials of multiple strategies to remove or prevent their formation. We performed neuropathological and biochemical assessments of 3 subjects treated with bapineuzumab infusions. Histological analyses were conducted to quantify amyloid plaque densities, Braak stages and the extent of cerebral amyloid angiopathy (CAA). Amyloid-β (Aβ) species in frontal and temporal lobe samples were quantified by ELISA. Western blots of amyloid-β precursor protein (AβPP) and its C-terminal (CT) fragments …
Comparing Clinical Profiles In Alzheimer's Disease And Parkinson's Disease Dementia, Martin R. Farlow, Frederick A. Schmitt, Dag Aarsland, George T. Grossberg, Monique Somogyi, Xiangyi Meng
Comparing Clinical Profiles In Alzheimer's Disease And Parkinson's Disease Dementia, Martin R. Farlow, Frederick A. Schmitt, Dag Aarsland, George T. Grossberg, Monique Somogyi, Xiangyi Meng
Sanders-Brown Center on Aging Faculty Publications
BACKGROUND: Greater understanding of differences in baseline impairment and disease progression in patients with Alzheimer's disease (AD) and Parkinson's disease dementia (PDD) may improve the interpretation of drug effects and the design of future studies.
METHODS: This was a retrospective analysis of three randomized, double-blind rivastigmine databases (one in PDD, two in AD). Impairment on the Alzheimer's Disease Assessment Scale-cognitive subscale (ADAS-cog), Alzheimer's Disease Cooperative Study-Activities of Daily Living (ADCS-ADL) scale, 10-item Neuropsychiatric Inventory (NPI-10) and the ADCS-Clinical Global Impression of Change (CGIC) was compared [standardized difference (Cohen's d), similar if <0.1].
RESULTS: Patients with AD or PDD had similar levels …
0.1].Successfully Climbing The "Stairs": Surmounting Failed Translation Of Experimental Ischemic Stroke Treatments, Michael Kahle, Gregory J. Bix
Successfully Climbing The "Stairs": Surmounting Failed Translation Of Experimental Ischemic Stroke Treatments, Michael Kahle, Gregory J. Bix
Sanders-Brown Center on Aging Faculty Publications
The Stroke Therapy Academic Industry Roundtable (STAIR) provided initial (in 1999) and updated (in 2009) recommendations with the goal of improving preclinical stroke therapy assessment and to increase the translational potential of experimental stroke treatments. It is important for preclinical stroke researchers to frequently consider and revisit these concepts, especially since promising experimental stroke treatments continue to fail in human clinical trials. Therefore, this paper will focus on considerations for several key aspects of preclinical stroke studies including the selection and execution of the animal stroke model, drug/experimental treatment administration, and outcome measures to improve experimental validity and translation potential. …
Practice Effects In A Longitudinal, Multi-Center Alzheimer's Disease Prevention Clinical Trial, Erin L. Abner, Brandon C. Dennis, Melissa J. Mathews, Marta S. Mendiondo, Allison Caban-Holt, Richard J. Kryscio, Frederick A. Schmitt, John J. Crowley
Practice Effects In A Longitudinal, Multi-Center Alzheimer's Disease Prevention Clinical Trial, Erin L. Abner, Brandon C. Dennis, Melissa J. Mathews, Marta S. Mendiondo, Allison Caban-Holt, Richard J. Kryscio, Frederick A. Schmitt, John J. Crowley
Sanders-Brown Center on Aging Faculty Publications
BACKGROUND: Practice effects are a known threat to reliability and validity in clinical trials. Few studies have investigated the potential influence of practice on repeated screening measures in longitudinal clinical trials with a focus on dementia prevention. The current study investigates whether practice effects exist on a screening measure commonly used in aging research, the Memory Impairment Screen (MIS).
METHODS: The PREADViSE trial is a clinical intervention study evaluating the efficacy of vitamin E and selenium for Alzheimer's disease prevention. Participants are screened annually for incident dementia with the MIS. Participants with baseline and three consecutive follow-ups who made less …
Perlecan Domain V Induces Vegf Secretion In Brain Endothelial Cells Through Integrin Α5Β1 And Erk-Dependent Signaling Pathways, Douglas N. Clarke, Abraham Al Ahmad, Boyeon Lee, Christi Parham, Lisa Auckland, Andrezj Fertala, Michael Kahle, Courtney S. Shaw, Jill Roberts, Gregory J. Bix
Perlecan Domain V Induces Vegf Secretion In Brain Endothelial Cells Through Integrin Α5Β1 And Erk-Dependent Signaling Pathways, Douglas N. Clarke, Abraham Al Ahmad, Boyeon Lee, Christi Parham, Lisa Auckland, Andrezj Fertala, Michael Kahle, Courtney S. Shaw, Jill Roberts, Gregory J. Bix
Sanders-Brown Center on Aging Faculty Publications
Perlecan Domain V (DV) promotes brain angiogenesis by inducing VEGF release from brain endothelial cells (BECs) following stroke. In this study, we define the specific mechanism of DV interaction with the α(5)β(1) integrin, identify the downstream signal transduction pathway, and further investigate the functional significance of resultant VEGF release. Interestingly, we found that the LG3 portion of DV, which has been suggested to possess most of DV's angio-modulatory activity outside of the brain, binds poorly to α(5)β(1) and induces less BEC proliferation compared to full length DV. Additionally, we implicate DV's DGR sequence as an important element for the interaction …
Early Stage Drug Treatment That Normalizes Proinflammatory Cytokine Production Attenuates Synaptic Dysfunction In A Mouse Model That Exhibits Age-Dependent Progression Of Alzheimer's Disease-Related Pathology, Adam D. Bachstetter, Christopher M. Norris, Pradoldej Sompol, Donna M. Wilcock, Danielle Goulding, Janna H. Neltner, Daret St. Clair, D. Martin Watterson, Linda J. Van Eldik
Early Stage Drug Treatment That Normalizes Proinflammatory Cytokine Production Attenuates Synaptic Dysfunction In A Mouse Model That Exhibits Age-Dependent Progression Of Alzheimer's Disease-Related Pathology, Adam D. Bachstetter, Christopher M. Norris, Pradoldej Sompol, Donna M. Wilcock, Danielle Goulding, Janna H. Neltner, Daret St. Clair, D. Martin Watterson, Linda J. Van Eldik
Sanders-Brown Center on Aging Faculty Publications
Overproduction of proinflammatory cytokines in the CNS has been implicated as a key contributor to pathophysiology progression in Alzheimer's disease (AD), and extensive studies with animal models have shown that selective suppression of excessive glial proinflammatory cytokines can improve neurologic outcomes. The prior art, therefore, raises the logical postulation that intervention with drugs targeting dysregulated glial proinflammatory cytokine production might be effective disease-modifying therapeutics if used in the appropriate biological time window. To test the hypothesis that early stage intervention with such drugs might be therapeutically beneficial, we examined the impact of intervention with MW01-2-151SRM (MW-151), an experimental therapeutic that …
Lithium Treatment Of Appswdi/Nos2−/− Mice Leads To Reduced Hyperphosphorylated Tau, Increased Amyloid Deposition And Altered Inflammatory Phenotype, Tiffany L. Sudduth, Joan G. Wilson, Angela Everhart, Carol A. Colton, Donna M. Wilcock
Lithium Treatment Of Appswdi/Nos2−/− Mice Leads To Reduced Hyperphosphorylated Tau, Increased Amyloid Deposition And Altered Inflammatory Phenotype, Tiffany L. Sudduth, Joan G. Wilson, Angela Everhart, Carol A. Colton, Donna M. Wilcock
Sanders-Brown Center on Aging Faculty Publications
Lithium is an anti-psychotic that has been shown to prevent the hyperphosphorylation of tau protein through the inhibition of glycogen-synthase kinase 3-beta (GSK3β). We recently developed a mouse model that progresses from amyloid pathology to tau pathology and neurodegeneration due to the genetic deletion of NOS2 in an APP transgenic mouse; the APPSwDI/NOS2-/- mouse. Because this mouse develops tau pathology, amyloid pathology and neuronal loss we were interested in the effect anti-tau therapy would have on amyloid pathology, learning and memory. We administered lithium in the diets of APPSwDI/NOS2-/- mice for a period of eight months, followed by water maze …
Conformational Altered P53 As An Early Marker Of Oxidative Stress In Alzheimer's Disease, Laura Buizza, Giovanna Cenini, Cristina Lanni, Giulia Ferrari-Toninelli, Chiara Prandelli, Stefano Govoni, Erica Buoso, Marco Racchi, Maria Barcikowska, Maria Styczynska, Aleksandra Szybinska, D. Allan Butterfield, Maurizio Memo, Daniela Uberti
Conformational Altered P53 As An Early Marker Of Oxidative Stress In Alzheimer's Disease, Laura Buizza, Giovanna Cenini, Cristina Lanni, Giulia Ferrari-Toninelli, Chiara Prandelli, Stefano Govoni, Erica Buoso, Marco Racchi, Maria Barcikowska, Maria Styczynska, Aleksandra Szybinska, D. Allan Butterfield, Maurizio Memo, Daniela Uberti
Sanders-Brown Center on Aging Faculty Publications
In order to study oxidative stress in peripheral cells of Alzheimer's disease (AD) patients, immortalized lymphocytes derived from two peculiar cohorts of patients, referring to early onset AD (EOSAD) and subjects harboured AD related mutation (ADmut), were used. Oxidative stress was evaluated measuring i) the typical oxidative markers, such as HNE Michel adducts, 3 Nitro-Tyrosine residues and protein carbonyl on protein extracts, ii) and the antioxidant capacity, following the enzymatic kinetic of superoxide dismutase (SOD), glutathione peroxidase (GPx) and glutathione reductase (GRD). We found that the signs of oxidative stress, measured as oxidative marker levels, were evident only in ADmut …
Humor-Related Social Exchanges And Mental Health In Assisted Living Residents, Ann Elizabeth Mcqueen
Humor-Related Social Exchanges And Mental Health In Assisted Living Residents, Ann Elizabeth Mcqueen
Dissertations and Theses
Social contact is known to be vital for older adults' mental and physical health, but few studies of social interactions have taken place in long-term care settings. The current study investigated whether the psychological well-being of assisted living residents was influenced by factors associated with residents' social interactions involving humor. Specific aims of the present study were to develop and test a measure related to humor-related social exchanges, to examine how humor-related social exchanges affect residents' mental health, and to explore whether humor-related social exchanges mediated the effects of resident and facility characteristics on indices of mental health. One hundred …
Mild Cognitive Impairment: Statistical Models Of Transition Using Longitudinal Clinical Data, Erin L. Abner, Richard J. Kryscio, Gregory E. Cooper, David W. Fardo, Gregory A. Jicha, Marta S. Mendiondo, Peter T. Nelson, Charles D. Smith, Linda J. Van Eldik, Lijie Wan, Frederick A. Schmitt
Mild Cognitive Impairment: Statistical Models Of Transition Using Longitudinal Clinical Data, Erin L. Abner, Richard J. Kryscio, Gregory E. Cooper, David W. Fardo, Gregory A. Jicha, Marta S. Mendiondo, Peter T. Nelson, Charles D. Smith, Linda J. Van Eldik, Lijie Wan, Frederick A. Schmitt
Sanders-Brown Center on Aging Faculty Publications
Mild cognitive impairment (MCI) refers to the clinical state between normal cognition and probable Alzheimer's disease (AD), but persons diagnosed with MCI may progress to non-AD forms of dementia, remain MCI until death, or recover to normal cognition. Risk factors for these various clinical changes, which we term "transitions," may provide targets for therapeutic interventions. Therefore, it is useful to develop new approaches to assess risk factors for these transitions. Markov models have been used to investigate the transient nature of MCI represented by amnestic single-domain and mixed MCI states, where mixed MCI comprised all other MCI subtypes based on …
Microglial P38Α Mapk Is Critical For Lps-Induced Neuron Degeneration, Through A Mechanism Involving Tnfα, Bin Xing, Adam D. Bachstetter, Linda J. Van Eldik
Microglial P38Α Mapk Is Critical For Lps-Induced Neuron Degeneration, Through A Mechanism Involving Tnfα, Bin Xing, Adam D. Bachstetter, Linda J. Van Eldik
Sanders-Brown Center on Aging Faculty Publications
BACKGROUND: The p38α MAPK isoform is a well-established therapeutic target in peripheral inflammatory diseases, but the importance of this kinase in pathological microglial activation and detrimental inflammation in CNS disorders is less well understood. To test the role of the p38α MAPK isoform in microglia-dependent neuron damage, we used primary microglia from wild-type (WT) or p38α MAPK conditional knockout (KO) mice in co-culture with WT cortical neurons, and measured neuron damage after LPS insult.
RESULTS: We found that neurons in co-culture with p38α-deficient microglia were protected against LPS-induced synaptic loss, neurite degeneration, and neuronal death. The involvement of the proinflammatory …
Leaving Home Care: Decision Making, Risk Scenarios & Services Gaps In The Home Care System, Jacey J. Vaughan, Nina M. Silverstein
Leaving Home Care: Decision Making, Risk Scenarios & Services Gaps In The Home Care System, Jacey J. Vaughan, Nina M. Silverstein
Gerontology Institute Publications
Home and community-based services (HCBS) enable older and disabled adults to age-in-place in their homes and communities by helping them function independently for as long as possible (Grabowski et al., 2010; Wong & Silverstein, 2011). Previous studies well document that older adults prefer receiving HCBS rather than institutional care at a nursing home (e.g., Walker, 2010; Fox-Grage, Coleman, & Freiman, 2006). Medicaid is a major source of funding for long-term care. Currently, a large proportion of Medicaid funds in most states has been spent on institutional care (National Conference of State Legislatures & AARP, 2009), and older adults and their …
The Role Of Home Environments In Residential Adjustment Decision Making In Later Life, Kimberly Joy Stoeckel
The Role Of Home Environments In Residential Adjustment Decision Making In Later Life, Kimberly Joy Stoeckel
Graduate Doctoral Dissertations
Using the nationally representative Health and Retirement Study, this research explored the multi-faceted influence of the accessibility of housing environments on the occurrence and characteristics of residential adjustments made by older adults aged 70 or older. A range of housing adjustment outcomes were examined, including home modifications and relocation into age-segregated senior housing. Analysis of the accessibility gains following relocation was also included in the empirical analyses.
The Ecological Theory of Aging (Lawton & Nahemow, 1973) provided the conceptual framework for the research. The longitudinal design of the HRS empirically advanced understanding of the key theoretical constructs by sensitizing the …
Elevated Stearoyl-Coa Desaturase In Brains Of Patients With Alzheimer's Disease, Giuseppe Astarita, Kwang-Mook Jung, Vitaly Vasilevko, Nicholas V. Dipatrizio, Sarah K. Martin, David H. Cribbs, Elizabeth Head, Carl W. Cotman, Daniele Piomelli
Elevated Stearoyl-Coa Desaturase In Brains Of Patients With Alzheimer's Disease, Giuseppe Astarita, Kwang-Mook Jung, Vitaly Vasilevko, Nicholas V. Dipatrizio, Sarah K. Martin, David H. Cribbs, Elizabeth Head, Carl W. Cotman, Daniele Piomelli
Sanders-Brown Center on Aging Faculty Publications
The molecular bases of Alzheimer's disease (AD) remain unclear. We used a lipidomic approach to identify lipid abnormalities in the brains of subjects with AD (N = 37) compared to age-matched controls (N = 17). The analyses revealed statistically detectable elevations in levels of non-esterified monounsaturated fatty acids (MUFAs) and mead acid (20:3n-9) in mid-frontal cortex, temporal cortex and hippocampus of AD patients. Further studies showed that brain mRNAs encoding for isoforms of the rate-limiting enzyme in MUFAs biosynthesis, stearoyl-CoA desaturase (SCD-1, SCD-5a and SCD-5b), were elevated in subjects with AD. The monounsaturated/saturated fatty acid ratio ('desaturation index')--displayed a strong …
Activation Of Matrix Metalloproteinases Following Anti-Aβ Immunotherapy; Implications For Microhemorrhage Occurrence, Donna M. Wilcock, Dave Morgan, Marcia N. Gordon, Tiffany L. Taylor, Lisa A. Ridnour, David A. Wink, Carol A. Colton
Activation Of Matrix Metalloproteinases Following Anti-Aβ Immunotherapy; Implications For Microhemorrhage Occurrence, Donna M. Wilcock, Dave Morgan, Marcia N. Gordon, Tiffany L. Taylor, Lisa A. Ridnour, David A. Wink, Carol A. Colton
Sanders-Brown Center on Aging Faculty Publications
BACKGROUND: Anti-Aβ immunotherapy is a promising approach to the prevention and treatment of Alzheimer's disease (AD) currently in clinical trials. There is extensive evidence, both in mice and humans that a significant adverse event is the occurrence of microhemorrhages. Also, vasogenic edema was reported in phase 2 of a passive immunization clinical trial. In order to overcome these vascular adverse effects it is critical that we understand the mechanism(s) by which they occur.
METHODS: We have examined the matrix metalloproteinase (MMP) protein degradation system in two previously published anti-Aβ immunotherapy studies. The first was a passive immunization study in which …
Senior Transportation Abstracts: A Focus On Options, Helen Kerschner, Nina M. Silverstein
Senior Transportation Abstracts: A Focus On Options, Helen Kerschner, Nina M. Silverstein
Gerontology Institute Publications
This collection of abstracts represents a publication of importance for understanding the needs, challenges, solutions, and/or every day issues related to senior transportation services. While several of the abstracts include information about senior driver safety, the collection’s primary purpose is to present a holistic approach to transportation options for older adults. Such a collection is timely because, although the practice of providing transportation to older adults is not new, research and preparation of practical informational and technical materials related to older adult transportation service needs and service delivery are quite recent.
Massachusetts Senior Legal Assistance Project Needs Evaluation: Current Demand For Legal Services, Alison Gottlieb, Lauren A. Martin, Ellen A. Bruce
Massachusetts Senior Legal Assistance Project Needs Evaluation: Current Demand For Legal Services, Alison Gottlieb, Lauren A. Martin, Ellen A. Bruce
Gerontology Institute Publications
The Gerontology Institute at the University of Massachusetts Boston was contracted to conduct a statewide needs assessment for the MSLAP. As agreed upon by the MSLAP Advisory Board, the focus of this assessment was to analyze the demand for services Massachusetts legal service providers have experienced recently as a means to understanding the legal needs of Massachusetts elders (age 60 and older). A second needs assessment was conducted by the Massachusetts Executive Office of Elder Affairs. That needs assessment surveyed home care workers and other elder agency personnel to gauge their assessment of elders’ legal needs in Massachusetts. Read together, …
Evaluation Of The Global Association Between Cholesterol-Associated Polymorphisms And Alzheimer's Disease Suggests A Role For Rs3846662 And Hmgcr Splicing In Disease Risk, Christopher R. Simmons, Fanggeng Zou, Steven G Younkin, Steven Estus
Evaluation Of The Global Association Between Cholesterol-Associated Polymorphisms And Alzheimer's Disease Suggests A Role For Rs3846662 And Hmgcr Splicing In Disease Risk, Christopher R. Simmons, Fanggeng Zou, Steven G Younkin, Steven Estus
Sanders-Brown Center on Aging Faculty Publications
BACKGROUND: Recent genome-wide association studies (GWAS) have identified single nucleotide polymorphisms (SNP)s that are essentially unequivocally associated with peripheral cholesterol. Since the alleles of the APOE gene, which modulate peripheral cholesterol metabolism, and midlife plasma cholesterol are both associated with Alzheimer's disease (AD) risk, we have evaluated the hypothesis that SNPs associated with plasma cholesterol are also associated with AD.
RESULTS: Seventeen non-APOE SNPs reproducibly associated with cholesterol per GWAS were tested for association with AD in ~2,000 AD and ~4,000 non-AD subjects. As a group, these SNPs are associated with AD. Two SNPs in particular, rs3846662 and rs1532085, are …
Epigenetic Silencing Of Nucleolar Rrna Genes In Alzheimer's Disease, Maciej Pietrzak, Grzegorz Rempala, Peter T. Nelson, Jing-Juan Zheng, Michal Hetman
Epigenetic Silencing Of Nucleolar Rrna Genes In Alzheimer's Disease, Maciej Pietrzak, Grzegorz Rempala, Peter T. Nelson, Jing-Juan Zheng, Michal Hetman
Sanders-Brown Center on Aging Faculty Publications
BACKGROUND: Ribosomal deficits are documented in mild cognitive impairment (MCI), which often represents an early stage Alzheimer's disease (AD), as well as in advanced AD. The nucleolar rRNA genes (rDNA), transcription of which is critical for ribosomal biogenesis, are regulated by epigenetic silencing including promoter CpG methylation.
METHODOLOGY/PRINCIPAL FINDINGS: To assess whether CpG methylation of the rDNA promoter was dysregulated across the AD spectrum, we analyzed brain samples from 10 MCI-, 23 AD-, and, 24 age-matched control individuals using bisulfite mapping. The rDNA promoter became hypermethylated in cerebro-cortical samples from MCI and AD groups. In parietal cortex, the rDNA promoter …
Microglial P38Α Mapk Is A Key Regulator Of Proinflammatory Cytokine Up-Regulation Induced By Toll-Like Receptor (Tlr) Ligands Or Beta-Amyloid (Aβ), Adam D. Bachstetter, Bin Xing, Lucia De Almeida, Edgardo R. Dimayuga, D. Martin Watterson, Linda J. Van Eldik
Microglial P38Α Mapk Is A Key Regulator Of Proinflammatory Cytokine Up-Regulation Induced By Toll-Like Receptor (Tlr) Ligands Or Beta-Amyloid (Aβ), Adam D. Bachstetter, Bin Xing, Lucia De Almeida, Edgardo R. Dimayuga, D. Martin Watterson, Linda J. Van Eldik
Sanders-Brown Center on Aging Faculty Publications
BACKGROUND: Overproduction of proinflammatory cytokines from activated microglia has been implicated as an important contributor to pathophysiology progression in both acute and chronic neurodegenerative diseases. Therefore, it is critical to elucidate intracellular signaling pathways that are significant contributors to cytokine overproduction in microglia exposed to specific stressors, especially pathways amenable to drug interventions. The serine/threonine protein kinase p38α MAPK is a key enzyme in the parallel and convergent intracellular signaling pathways involved in stressor-induced production of IL-1β and TNFα in peripheral tissues, and is a drug development target for peripheral inflammatory diseases. However, much less is known about the quantitative …
Analyzing The Impact Of 23 Mg/Day Donepezil On Language Dysfunction In Moderate To Severe Alzheimer's Disease, Steven H. Ferris, Frederick A. Schmitt, Judith Saxton, Sharon Richardson, Joan Mackell, Yijun Sun, Yikang Xu
Analyzing The Impact Of 23 Mg/Day Donepezil On Language Dysfunction In Moderate To Severe Alzheimer's Disease, Steven H. Ferris, Frederick A. Schmitt, Judith Saxton, Sharon Richardson, Joan Mackell, Yijun Sun, Yikang Xu
Sanders-Brown Center on Aging Faculty Publications
INTRODUCTION: Progressive language impairment is among the primary components of cognitive decline in Alzheimer's disease (AD). Because expressive and receptive language help to maintain emotional connections to caregivers and support the management of AD patients' functional needs, language plays a critical role in patients' emotional and physical health. Using data from a large prospective clinical trial comparing two doses of donepezil in patients with moderate to severe AD, we performed a post hoc analysis to determine whether a higher dose of donepezil was associated with greater benefits in language function.
METHODS: In the original randomized, double-blind clinical trial, 1,467 patients …
Chronic Disease Self-Management Programs: Relevance For Persons With Dementia, Nina M. Silverstein, Alison S. Gottlieb
Chronic Disease Self-Management Programs: Relevance For Persons With Dementia, Nina M. Silverstein, Alison S. Gottlieb
Gerontology Institute Publications
The context for this study is the work of the Healthy Brain Initiative. The CDC has established a cooperative agreement with the Alzheimer’s Association to develop and implement a multifaceted approach to look at cognitive health as a public health issue. Late in 2010, the Association commissioned a review of the major chronic disease prevention programs from a systems approach to begin to understand the source of findings that Medicare beneficiaries with Alzheimer’s and related disorders are much higher cost than those simply with a single chronic disease and no AD. This led to the conclusion that Chronic Disease Self‐Management …
Rheumatoid Arthritis-Associated Polymorphisms Are Not Protective Against Alzheimer's Disease, Christopher R. Simmons, Fanggeng Zou, Steven G Younkin, Steven Estus
Rheumatoid Arthritis-Associated Polymorphisms Are Not Protective Against Alzheimer's Disease, Christopher R. Simmons, Fanggeng Zou, Steven G Younkin, Steven Estus
Sanders-Brown Center on Aging Faculty Publications
BACKGROUND: Rheumatoid arthritis (RA) and Alzheimer's disease (AD) are inversely associated. To test the hypothesis that genetic elements associated with increased RA risk are associated with decreased AD risk, we evaluated RA genetic risk factors recently identified in genome-wide association studies (GWAS) for their association with AD in a two-stage, case-control analysis.
RESULTS: In our Stage 1 analysis of ~800 AD and ~1,200 non-AD individuals, three of seventeen RA-associated SNPs were nominally associated with AD (p < 0.05) with one SNP, rs2837960, retaining significance after correction for multiple testing (p = 0.03). The rs2837960_G (minor) allele, which is associated with increased RA risk, was associated with increased AD risk. Analysis of these three SNPs in a Stage 2 population, consisting of ~1,100 AD and ~2,600 non-AD individuals, did not confirm their association with AD. Analysis of Stage 1 and 2 combined suggested that rs2837960 shows a trend for association with AD. When the Stage 2 population was age-matched for the Stage 1 population, rs2837960 exhibited a non-significant trend with AD. Combined analysis of Stage 1 and the age-matched Stage 2 subset showed a significant association of rs2837960 with AD (p = 0.002, OR 1.24) that retained significance following correction for age, sex and APOE (p = 0.02, OR = 1.20). Rs2837960 is near BACE2, which encodes an aspartic protease capable of processing the AD-associated amyloid precursor protein. Testing for an association between rs2837960 and the expression of BACE2 isoforms in human brain, we observed a trend between rs2837960 and the total expression of BACE2 and the expression of a BACE2 transcript lacking exon 7 (p = 0.07 and 0.10, respectively).
CONCLUSIONS: RA-associated SNPs are generally not associated with AD. Moreover, rs2837960_G is associated with increased risk of both RA and, in individuals less than …
Dimensions Of Aging And Belonging For The Older Person And The Effects Of Ageism, Laurence C. Nolan
Dimensions Of Aging And Belonging For The Older Person And The Effects Of Ageism, Laurence C. Nolan
Brigham Young University Journal of Public Law
No abstract provided.
Massachusetts’ Home Care Programs And Reasons For Discharge Into Nursing Homes, Cathy M. Wong, Nina M. Silverstein
Massachusetts’ Home Care Programs And Reasons For Discharge Into Nursing Homes, Cathy M. Wong, Nina M. Silverstein
Gerontology Institute Publications
Home and community-based services (HCBS) are a range of long-term care services intended to enable older adults and persons with disabilities to “age in place” in their own homes and communities. Previous studies well document that older adults prefer receiving HCBS rather than institutional care at a nursing home. One study concluded that 84 percent of older Americans, aged 50 years and older, want to remain in their homes for as long as possible. Medicaid is a major source of funding for long term care. Currently, a large proportion of Medicaid funds in most states has been spent on institutional, …