scholarly journals The Prevalence of Alzheimer’s Disease; its Risk and Protective Factors Among the Elderly Population in Iran

2017 ◽  
Vol 18 (9) ◽  
Author(s):  
Sakineh Gholamzadeh ◽  
Banafsheh Heshmati ◽  
Arash Mani ◽  
Peyman Petramfar ◽  
Zahra Baghery
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Protective Factors ◽  
Elderly Population ◽  
The Elderly ◽  
Risk And Protective Factors

scholarly journals APOE-ε4 polymorphism and cognitive deficit among the elderly population of Fernando de Noronha

2008 ◽  
Vol 66 (2b) ◽  
pp. 298-302 ◽  
Author(s):  
Anália Nusya Garcia ◽  
Helker Albuquerque da Silva ◽  
Renan Carlos Silva ◽  
Eliane Maria Medeiros Leal ◽  
Lorena Rodrigues ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Elderly Population ◽  
Cognitive Deficit ◽  
The Elderly ◽  
Clock Drawing Test ◽  
Apoe Ε4 ◽  
Pcr Rflp ◽  
Fernando De Noronha ◽  
Ε4 Allele

BACKGROUND: Polymorphism of the gene for apolipoprotein E (APOE) is an important risk factor for the development of Alzheimer's disease. The ε4 allele of the APOE gene has been linked with a number of neuropsychiatric illnesses, and also with stress and depression among geriatric populations. OBJECTIVE: To identify APOE-ε4 polymorphism and correlate this with cognitive deficit among the elderly population of the island of Fernando de Noronha. METHOD: Neuropsychiatric tests (mini-mental state examination, verbal fluency test and clock drawing test) were applied to 52 elderly people without Alzheimer's disease. DNA was isolated from peripheral blood and genotyping of APOE was done by the PCR-RFLP method. RESULTS: 87% of the elderly population (mean age 69.6±7.0) had cognitive deficit. CONCLUSION: The observed frequency of the ε4 allele was 10%, but the correlation between the presence of ε4 and cognitive deficit in this population was not statistically significant.

Metabolomic Alterations in the Blood and Brain in Association with Alzheimer’s Disease: Evidence from in vivo to Clinical Studies

2021 ◽  
pp. 1-28
Author(s):  
Sirawit Sriwichaiin ◽  
Nipon Chattipakorn ◽  
Siriporn C. Chattipakorn
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Clinical Studies ◽  
Elderly Population ◽  
The Elderly ◽  
Pathological Findings ◽  
Major Health Problem ◽  
Major Health ◽  
The Brain

Alzheimer’s disease (AD) has become a major health problem among the elderly population. Some evidence suggests that metabolic disturbance possibly plays a role in the pathophysiology of AD. Currently, the study of metabolomics has been used to explore changes in multiple metabolites in several diseases, including AD. Thus, the metabolomics research in AD might provide some information regarding metabolic dysregulations, and their possible associated pathophysiology. This review summarizes the information discovered regarding the metabolites in the brain and the blood from the metabolomics research of AD from both animal and clinical studies. Additionally, the correlation between the changes in metabolites and outcomes, such as pathological findings in the brain and cognitive impairment are discussed. We also deliberate on the findings of cohort studies, demonstrating the alterations in metabolites before changes of cognitive function. All of these findings can be used to inform the potential identity of specific metabolites as possible biomarkers for AD.

scholarly journals The bile acid TUDCA improves glucose homeostasis through increase of insulin levels in mice with Alzheimer's disease

2019 ◽  
Author(s):  
Lucas Zangerolamo ◽  
Helena Cristina de Lima Barbosa Sampaio ◽  
Jean Franciesco Vettorazzi ◽  
Carina Solon ◽  
Gabriela Moreira Soares ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Insulin Resistance ◽  
Alzheimer's Disease ◽  
Bile Acid ◽  
Elderly Population ◽  
Population Studies ◽  
The Elderly ◽  
Insulin Homeostasis ◽  
Aβ Oligomer

Alzheimer's disease (AD) and Type 2 Diabetes Mellitus (T2DM) are two of the most prevalent disorders in the elderly population. Studies suggest that people with T2DM have higher risk of developing AD. Likewise, AD brains presents Insulin resistance resulting in low capacity of glucose uptake. There is a growing evidence that insulin resistance and downstream abnormalities in the insulin signaling pathway are present in the AD brain and contribute to the development of cognitive dysfunction. Here we reported that C57BL/6 mice submitted to intracerebroventricular injection of streptozotocin, model of AD, and treated during 10 days with the bile acid TUDCA presented reduced accumulation of Aβ oligomer in the hippocampus and higher insulin secretion and glucose tolerance, besides improvement in memory test, suggesting that TUDCA treatment interferes with glucose-insulin homeostasis in brain and consequently attenuates AD.

scholarly journals Direct and indirect neurological, cognitive and behavioral effects of COVID-19 on the normal elderly, Mild-Cognitive-Impairment and Alzheimer’s Disease populations

2020 ◽  
Author(s):  
Francesco Iodice ◽  
Valeria Cassano ◽  
Paolo Maria Rossini
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Indirect Effects ◽  
Elderly Population ◽  
Health Resources ◽  
The Elderly ◽  
Recovery Phase ◽  
Healthy Elderly

Abstract This article reviews the main articles that have been published so far about the direct and indirect effects of the COVID-19 pandemic on a particularly fragile population represented by the healthy elderly people as well as those with Mild Cognitive Impairment and Alzheimer's disease. Such populations have been among the most affected in the early stages of the pandemic due to the direct effects of the virus and numerous indirect effects now emerge and will have to be carefully assessed over time. The pandemic associated to COVID-19 has shifted most of the health resources to the emergency area and has consequently left the three main medical areas that dealing with the elderly population (oncology, time-dependent diseases and degenerative disease) temporarily “uncovered”. In the phase following the emergency, it will be crucial to guarantee to each area the economic and organizational resources to quickly return to the level of support of the pre-pandemic state. The emergency phase represented an important moment of discussion on the possibilities of telemedicine which will inevitably become increasingly important but all the limits of its use in the elderly population have to be considered. In the post-lockdown recovery phase, alongside the classic medical evaluation, the psychological evaluation must become even more important for doctors caring about people with cognitive decline.

The role of ubiquitin proteasomal system and autophagy-lysosome pathway in Alzheimer’s disease

2017 ◽  
Vol 28 (8) ◽  
Author(s):  
Yuan Zhang ◽  
Xu Chen ◽  
Yanfang Zhao ◽  
Murugavel Ponnusamy ◽  
Ying Liu
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Protein Degradation ◽  
Molecular Chaperones ◽  
Elderly Population ◽  
Neurodegenerative Disorder ◽  
The Elderly ◽  
Pathological Process ◽  
Β Amyloid

AbstractAlzheimer’s disease (AD) is the most common neurodegenerative disorder leading to dementia in the elderly population. AD is associated with the buildup of β-amyloid and tau, which aggregate into extracellular plaques and neurofibrillary tangles. Although the exact mechanism of pathological process of AD is unclear, the dysfunction of protein degradation mechanisms has been proposed to play an important role in AD. The cellular degradation of abnormal or misfolded proteins consists of three different mechanisms: the ubiquitin proteasomal system (UPS), autophagy-lysosomal pathway (ALP), and interaction of molecular chaperones with UPS or ALP. Any disturbance to these systems causes proteins to accumulate, resulting in pathological process of AD. In this review, we summarize the knowledge of protein degradation pathways in the pathogenesis of AD in light of the current literature. In the future, the regulation UPS or ALP machineries could be the cornerstones of the treatment of AD.

scholarly journals Natural products and their derived compounds inhibitors of the enzyme acetylcholinesterase

2020 ◽  
pp. 149-160
Author(s):  
Maha Z. Rizk ◽  
Hanan F. Aly
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Natural Products ◽  
Secondary Metabolites ◽  
Plant Extracts ◽  
Elderly Population ◽  
Acetylcholinesterase Inhibitors ◽  
The Elderly ◽  
Neurodegenerative Pathology ◽  
The Brain

Alzheimer’s disease (AD) is a progressive, neurodegenerative pathology that primarily affects the elderly population, and is estimated to account for 50-60% of dementia cases in persons over 65 years of age. The main characteristics connected with AD implicate the dysfunction of cognitive role, mainly loss of memory. While, the main features linked with AD at later stages include deficits of language, depression and problems associated with behavior. One of the most important approaches for medication of this disease is to improve level of the acetylcholine in the brain tissues using inhibitors of acetylcholinesterase (AChE). The present work reviews the literature on natural products from plants and plant-derived compounds inhibitors of enzyme acetylcholinesterase. Keywords: Alzheimer’s disease; Acetylcholinesterase inhibitors; Secondary metabolites; Plant extracts; essential oils

scholarly journals Influence of Alzheimer’s disease on the relationship between nutritional status and risk of fall

2021 ◽  
Vol 43 ◽  
pp. e48747
Author(s):  
Maria Vaitsa Loch Haskel ◽  
Sara Carolina Scremin Souza ◽  
Danilo Fernandes da Silva ◽  
Weber Cláudio Francisco Nunes da Silva ◽  
Juliana Sartori Bonini
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Body Composition ◽  
Nutritional Status ◽  
Elderly Population ◽  
Mini Nutritional Assessment ◽  
The Elderly ◽  
Metabolic Condition ◽  
Risk Of Falls ◽  
Risk Of Fall

Although malnutrition and risk of falls in the elderly have increased in recent years, uncertainties exist as to whether these conditions are associated after controlling for sociodemographic variables, body composition, metabolic condition, and Alzheimer’s disease (AD). This study aimed to analyze the association between nutritional status and risk of fall in the elderly population. Participants were matched by gender and age, after they had been grouped on the basis of diagnosis of AD. The risk of falls, nutritional status, and mental status were assessed using the Downton Fall Risk Score (FRS), Mini Nutritional Assessment (MNA), and Mini Mental State Evaluation (MMSE), respectively. Logistic regression models adjusted for the main confounders were used in the analyses. Among the 68 elderly individuals studied, participants who were malnourished or at risk of malnutrition were more likely to fall (odds ratio = 8.29; 95% confidence interval = 1.49-46.04) than those with normal nutritional status, regardless of gender, age, education, body composition, and metabolic condition. This association did not remain significant after adjustment for AD, a potential confounder in this association. Malnutrition or its risk was independently associated with high risk of fall; thus, malnutrition should be considered in the prevention of falls among the elderly population.

Effect of Alzheimer's disease risk and protective factors on cognitive trajectories in subjective memory complainers: An INSIGHT-preAD study

2018 ◽  
Vol 14 (9) ◽  
pp. 1126-1136 ◽  
Author(s):  
Stefan J. Teipel ◽  
Enrica Cavedo ◽  
Simone Lista ◽  
Marie-Odile Habert ◽  
Marie-Claude Potier ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Protective Factors ◽  
Disease Risk ◽  
Risk And Protective Factors ◽  
Subjective Memory

Pharmacological Medical Treatment of Epilepsy in Patients with Dementia: A Systematic Review

2021 ◽  
Vol 18 ◽  
Author(s):  
Christian Sandøe Musaeus ◽  
Christer Nilsson ◽  
Chris Cooper ◽  
Milica G. Kramberger ◽  
Ana Verdelho ◽  
...  
Keyword(s):  
Systematic Review ◽  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Elderly Population ◽  
Mini Mental State Examination ◽  
The Elderly ◽  
Current Systematic Review ◽  
Increased Risk ◽  
State Examination ◽  
Relevant Interaction

Background: Patients with dementia have an increased risk of developing epilepsy, es- pecially in patients with vascular dementia and Alzheimer’s disease. In selecting the optimal an- ti-epileptic drug (AED), the possible side effects such as drowsiness and worsening of cognitive function should be taken into consideration, together with co-morbidities and type of epilepsy. Objective: The current systematic review investigates the efficacy, tolerability, and changes in cog- nitive function after administration of AED in patients with dementia and epilepsy. Methods: We searched six databases, including MEDLINE and CENTRAL, checked reference lists, contacted experts, and searched Google Scholar to identify studies reporting randomized trials. Studies identified were independently screened, data extracted, and quality appraised by two researchers. A narrative synthesis was used to report findings. Results: We included one study with 95 patients with Alzheimer’s disease randomized to either lev- etiracetam, lamotrigine, or phenobarbital. No significant differences were found for efficacy, but patients receiving levetiracetam showed an improvement in mini-mental state examination scores and had fewer adverse events. Conclusion: High-quality evidence in the form of randomized controlled trials to guide clinicians in choosing an AED in patients with dementia and concomitant epilepsy remains scarce. However, levetiracetam has previously been shown to possibly improve cognition in patients with both mild cognitive impairment and Alzheimer’s disease, is better tolerated in the elderly population, and has no clinically relevant interaction with either cholinesterase inhibitors or NMDA receptor antagon- ists.

scholarly journals The Role of Mitochondria in Alzheimer’s Disease and its Potential Therapies

2020 ◽  
pp. 175-183
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Abilities ◽  
Metabolic Pathways ◽  
Elderly Population ◽  
The Elderly ◽  
Gradual Decline ◽  
Potential Therapeutic Target ◽  
Diet And Lifestyle

Alzheimer’s disease (AD) is a common form of dementia, affecting millions of people worldwide, mostly the elderly population. The gradual decline in cognitive functions, loss of memory, and sleep disorder are the most frequently reported in AD patients. Multiple studies have been carried out to find a potential therapeutic approach to prevent the progression of Alzheimer’s disease and increase the performance of cognitive abilities. Mitochondrial dysfunction leading to oxidative stress and other environmental factors, diet and lifestyle are the major risk factors. Mitochondria play an essential role and are a potential therapeutic target for treating and preventing AD progression. Various biochemical molecules involved in mitochondrial metabolic pathways are tested as directly acting on mitochondria. Numerous antioxidants are considered as a potential treatment for AD. Here, we highlighted the emerging mitochondrial base therapies and potent antioxidants that can be used in Alzheimer’s disease treatments.

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