Medicine and Health Sciences Commons^™

The Transient Receptor Potential Melastatin 2 (Trpm2) Channel Contributes To Beta-Amyloid Oligomer-Related Neurotoxicity And Memory Impairment, Valeriy G. Ostapchenko, Megan Chen, Monica S. Guzman, Yu-Feng Xie, Natalie Lavine, Jue Fan, Flavio H. Beraldo, Amanda C. Martyn, Jillian C. Belrose, Yasuo Mori, John F. Macdonald, Vania F. Prado, Marco A. M. Prado, Michael F. Jackson

Anatomy and Cell Biology Publications

In Alzheimer's disease, accumulation of soluble oligomers of beta-amyloid peptide is known to be highly toxic, causing disturbances in synaptic activity and neuronal death. Multiple studies relate these effects to increased oxidative stress and aberrant activity of calcium-permeable cation channels leading to calcium imbalance. The transient receptor potential melastatin 2 (TRPM2) channel, a Ca2+-permeable nonselective cation channel activated by oxidative stress, has been implicated in neurodegenerative diseases, and more recently in amyloid-induced toxicity. Here we show that the function of TRPM2 is augmented by treatment of cultured neurons with beta-amyloid oligomers. Aged APP/PS1 Alzheimer's mouse model showed increased levels of …

The Role Of The Faith Community Nurse In Fostering Spirituality In Those With Alzheimer's Disease, Verna Carson Phd, Pmh/Cns-Bc

International Journal of Faith Community Nursing

Alzheimer ’s disease (AD) strips individuals of memories and abilities that have defined them as productive adults throughout their life. While the decline in memory is real and results in a ‘loss of self’ this does not equate to a ‘loss of soul.’ AD patients continue to have spiritual needs throughout their life as do the family, and/or caregivers. This article explores the spiritual needs and care of AD patients and families and the unique opportunity faith community nurses have to help the AD patient and their support system. The Reisberg Functional Assessment Staging System is used to explain the …

Stress Granules Modulate Syk To Cause Microglial Cell Dysfunction In Alzheimer's Disease, Soumira Ghosh, Robert Geahlen

Department of Medicinal Chemistry and Molecular Pharmacology Faculty Publications

Microglial cells in the brains of Alzheimer's patients are known to be recruited to amyloid-beta (Aβ) plaques where they exhibit an activated phenotype, but are defective for plaque removal by phagocytosis. In this study, we show that microglia stressed by exposure to sodium arsenite or Aβ(1–42) peptides or fibrils form ex- tensive stress granules (SGs) to which the tyrosine kinase, SYK, is recruited. SYK enhances the formation of SGs, is active within the resulting SGs and stimulates the production of reactive oxygen and nitrogen species that are toxic to neuronal cells. This sequestration of SYK inhibits the ability of microglial …

Fusing Heterogeneous Data For Alzheimer's Disease Classification, P. S. Pillai, Tze-Yun Leong

Research Collection School Of Computing and Information Systems

In multi-view learning, multimodal representations of a real world object or situation are integrated to learn its overall picture. Feature sets from distinct data sources carry different, yet complementary, information which, if analysed together, usually yield better insights and more accurate results. Neuro-degenerative disorders such as dementia are characterized by changes in multiple biomarkers. This work combines the features from neuroimaging and cerebrospinal fluid studies to distinguish Alzheimer's disease patients from healthy subjects. We apply statistical data fusion techniques on 101 subjects from the Alzheimer's Disease Neuroimaging Initiative (ADNI) database. We examine whether fusion of biomarkers helps to improve diagnostic …

Reversal Of Aging-Related Neuronal Ca2+ Dysregulation And Cognitive Impairment By Delivery Of A Transgene Encoding Fk506-Binding Protein 12.6/1b To The Hippocampus, John C. Gant, Kuey-Chu Chen, Inga Kadish, Eric M. Blalock, Olivier Thibault, Nada M. Porter, Philip W. Landfield

Pharmacology and Nutritional Sciences Faculty Publications

Brain Ca(2+) regulatory processes are altered during aging, disrupting neuronal, and cognitive functions. In hippocampal pyramidal neurons, the Ca(2+)-dependent slow afterhyperpolarization (sAHP) exhibits an increase with aging, which correlates with memory impairment. The increased sAHP results from elevated L-type Ca(2+) channel activity and ryanodine receptor (RyR)-mediated Ca(2+) release, but underlying molecular mechanisms are poorly understood. Previously, we found that expression of the gene encoding FK506-binding protein 12.6/1b (FKBP1b), a small immunophilin that stabilizes RyR-mediated Ca(2+) release in cardiomyocytes, declines in hippocampus of aged rats and Alzheimer's disease subjects. Additionally, knockdown/disruption of hippocampal FKBP1b in young rats augments neuronal Ca(2+) responses. …

The Alzheimer’S Association Dementia Care Coordination Program: A Process Evaluation, Executive Summary, Nina Silverstein, Frank Porell, Pamela Nadash

Gerontology Institute Publications

The Massachusetts/New Hampshire (MA/NH) Chapter of the Alzheimer's Association has long sought ways to systematically increase the number of families who utilize its services and support. According to the Alzheimer’s Association’s 2015 Alzheimer’s Disease Facts and Figures, there are 142,000 individuals living with Alzheimer’s disease in Massachusetts and New Hampshire, and the Alzheimer’s Association estimates that less than 30% of those individuals and their caregivers take advantage of its programs (Alzheimer’s Association, 2015). The MA/NH Chapter recognized that one major barrier to accessing services is a model that relies on families taking the initiative to seek out assistance.

In …

Low Neural Exosomal Levels Of Cellular Survival Factors In Alzheimer's Disease, Edward J. Goetzl, Adam Boxer, Janice B. Schwartz, Erin Abner, Ronald C. Petersen, Bruce L. Miller, Olga D. Carlson, Maja Mustapic, Dimitrios Kapogiannis

Sanders-Brown Center on Aging Faculty Publications

Transcription factors that mediate neuronal defenses against diverse stresses were quantified in plasma neural-derived exosomes of Alzheimer's disease or frontotemporal dementia patients and matched controls. Exosomal levels of low-density lipoprotein receptor-related protein 6, heat-shock factor-1, and repressor element 1-silencing transcription factor all were significantly lower in Alzheimer's disease patients than controls (P < 0.0001). In frontotemporal dementia, the only significant difference was higher levels of repressor element 1-silencing transcription factor than in controls. Exosomal transcription factors were diminished 2-10 years before clinical diagnosis of Alzheimer's disease. Low exosomal levels of survival proteins may explain decreased neuronal resistance to Alzheimer's disease neurotoxic proteins.

Live Model Simulation: Improving Nursing Students' Attitudes And Knowledge Of Alzheimer's Disease, Teresa Maharaj

Nursing Theses and Dissertations

Our country's older adult population (those 65 and older) continues to grow at unprecedented rates yet few nurses are prepared to safely and competently care for them with their challenging needs, especially those with Alzheimer's Disease and Related Dementias (ADRD). Research focused on teaching strategies that influenced students' preconceived attitudes and improved knowledge toward older adults with or without Alzheimer's disease (AD) is limited. This study examined whether a live-model simulation used as a teaching modality could improve student attitudes and knowledge of AD. Findings indicated that within the group of students who participated in the AD lecture and AD …

The Therapeutic Role Of Turmeric In Treatment And Prevention Of Alzheimer’S Disease, Rylan M. Mcquade

Selected Honors Theses

As a devastating neurological condition that expends millions of lives each year, Alzheimer’s disease (AD) is a subject of intense investigation.¹ Although AD has been known for over a century, the precise mechanisms that underlie AD pathogenesis and development are still poorly understood. The Alzheimer phenotype is typified by extracellular amyloid-beta (Aβ) plaques and intracellular neurofibrillary tangles (NFTs), causing researchers to notice several key enzymes implicated in this process.¹ Most notable are β and γ secretases (which drive Aβ plaque production) and phospholipase

A₂ (which stimulates major cascade activation through the specific cleavage of fatty acyl esters). …

A Practical Algorithm For Managing Alzheimer's Disease: What, When, And Why?, Jeffrey L. Cummings, Richard S. Isaacson, Frederick A. Schmitt, Drew M. Velting

Sanders-Brown Center on Aging Faculty Publications

Alzheimer's disease (AD) is the most common form of dementia and its prevalence is increasing. Recent developments in AD management provide improved ways of supporting patients and their caregivers throughout the disease continuum. Managing cardiovascular risk factors, maintaining an active lifestyle (with regular physical, mental and social activity) and following a Mediterranean diet appear to reduce AD risk and may slow cognitive decline. Pharmacologic therapy for AD should be initiated upon diagnosis. All of the currently available cholinesterase inhibitors (ChEIs; donepezil, galantamine, and rivastigmine) are indicated for mild-to-moderate AD. Donepezil (10 and 23 mg/day) and rivastigmine transdermal patch (13.3 mg/24 …

The Association Of Cognitive Endophenotypes And Risky Single Nucleotide Polymorphisms Of Alzheimer's Disease Within The Alzheimer's Disease Neuroimaging Initiative (Adni) Database, Kyle Joseph Jennette

USF Tampa Graduate Theses and Dissertations

Objective: The purpose of this study was to assess the influence of three single nucleotide polymorphisms (SNP) previously associated with Alzheimer's disease on specific domains of cognition, when controlling for Apolipoprotein E gene (APOE), in a sample of individuals with Alzheimer's disease. Methods: The data were drawn from the Alzheimer's Disease Neuroimaging Initiative database, a comprehensive, longitudinal database of controls, persons with mild cognitive impairment, and persons with mild Alzheimer's disease. Each subject has a full neuropsychological assessment, neuroimaging, genetic sequencing, and physical evaluation. For the purposes of this study, individuals were selected based on the presence of the three …

A Therapeutic Approach For Senile Dementias: Neuroangiogenesis, Charles T. Ambrose

Microbiology, Immunology, and Molecular Genetics Faculty Publications

Alzheimer's disease (AD) and related senile dementias (SDs) represent a growing medical and economic crisis in this country. Apart from cautioning persons about risk factors, no practical, effective therapy is currently available. Much of the recent research in AD has been based on the amyloid cascade theory. Another approach assumes a vascular basis for SDs. This paper presents evidence from a score of studies that cerebral capillary density (CCD) declines during old age in animals and people as well as in AD. Neuroangiogenic (NAG) factors initiate and maintain capillaries in the brain. Thus a waning level of these factors and …

Is There A Link Between Saturated Fat Intake And Alzheimer’S Disease?, Justin Konig

The Science Journal of the Lander College of Arts and Sciences

Alzheimer’s disease is a neurodegenerative disease that causes dementia and ultimately death. Currently, there is no treatment available for this disease. The aging of the population will only increase the incidence of Alzheimer’s disease, making it ever more important to find an effective method of prevention. Dietary intervention is a practical and affordable method of intervention. The brain is a fat rich organ, and dietary fats are critical for proper development of the brain. A literature review was conducted to determine whether there is a link between saturated fat intake and Alzheimer’s disease. According to the literature reviewed, saturated fat …

Cultural Beliefs And Experiences Of Formal Caregivers Providing Dementia Care To American Indians, Damon Grew Syphers

Walden Dissertations and Doctoral Studies

Alzheimer's disease (AD) is a significant public health concern for all elders in the United States. It is a particular concern for the American Indian (AI) population, which is one of the fastest-aging populations in the United States and the smallest, most underrecognized, and most culturally-diverse group in the country. A formal caregiver understanding of AD in the AI population is scarce. This phenomenological study was designed to discern what is known about AD in the AI population by exploring the cultural beliefs and experiences of formal caregivers who provide care for AI dementia patients. Specifically, this study sought to …

Impact Of Caregiving Role In The Quality Of Life Of Family Caregivers For Persons With Alzheimer's Disease, Supriya Sarkar

All Graduate Theses, Dissertations, and Other Capstone Projects

This study investigated quality of life of family caregivers of persons with Alzheimer's disease (AD). Caregiving is a strenuous and challenging job. Family caregivers experience poor quality of life after they take the role of caregiving which might be related to depression. Purpose of this study was to find if caregiving duration and depression has any role in affecting family caregivers' emotional, physical, and general health.

Data for this study were collected through electronic and mailed survey methods. The questionnaires completed by subjects: Medical Outcomes Study Short Form 36 (MOS-36) and Center for Epidemiologic Studies Depression Scale (CES-D). Descriptive statistics …

Gene Expression And Alzheimer's Disease: Evaluation Of Gene Expression Patterns In Brain And Blood For An Alzheimer's Disease Mouse Model, Amanda Hazy

Senior Honors Theses

Previous studies have established a causative role for altered gene expression in development of Alzheimer’s disease (AD). These changes can be affected by methylation and miRNA regulation. In this study, expression of miRNA known to change methylation status in AD was assessed by qPCR. Genome-wide expression changes were determined by RNA-sequencing of mRNA from hippocampus and blood of control and AD mice. The qPCR data showed significantly increased expression of Mir 17 in AD, and sequencing data revealed 230 genes in hippocampus, 58 genes in blood, and 8 overlapping genes showing significant differential expression (p value ≤ 0.05). Expression data …