Sodium selenate activated Wnt/ β-catenin signaling and repressed amyloid-β formation in a triple transgenic mouse model of Alzheimer's disease.

Sodium selenate activated Wnt/β-catenin signaling and repressed amyloid-β formation in a triple transgenic mouse model of Alzheimer's disease. Exp Neurol. 2017 Jul 12;: Authors: Jin N, Zhu H, Liang X, Huang W, Xie Q, Xiao P, Ni J, Liu Q Abstract Accumulating evidences show that selenium dietary intake is inversely associated with the mortality of Alzheimer's disease (AD). Sodium selenate has been reported to reduce neurofibrillary tangles (NFT) in the tauopathic mouse models, but its effects on the Wnt/β-catenin signaling pathway and APP processing remain unknown during AD formation. In this paper, triple transgenic AD mice (3×Tg-AD) had been treated with sodium selenate in drinking water for 10month before the detection of hippocampal pathology. Increased Aβ generation, tau hyperphosphorylation and neuronal apoptosis were found in the hippocampus of AD model mouse. Down-regulation of Wnt/β-catenin signaling is closely associated with the alteration of AD pathology. Treatment with sodium selenate significantly promoted the activity of protein phosphatases of type 2A (PP2A) and repressed the hallmarks of AD. Activation of PP2A by sodium selenate could increase active β-catenin level and inhibit GSK3β activity in the hippocampal tissue and primarily cultured neurons of AD model mouse, leading to activation of Wnt/β-catenin signaling and transactivation of target genes, including positively-regulated genes c-myc...
Source: Experimental Neurology - Category: Neurology Authors: Tags: Exp Neurol Source Type: research

Related Links:

This study aimed to verify findings in cerebrospinal fluid (CSF) samples of Alzheimer's disease (AD) and Parkinson's disease (PD) subjects from the network of the European, Innovative Medicines Initiative-funded project AETIONOMY. METHODS: A total of 227 samples from the studies/centres AETIONOMY, ICEBERG, and IDIBAPS were used to analyse 21 selected immunity biomarkers in CSF. Results were compared to data of an independent cohort of 399 subjects previously published. RESULTS: Immunity markers were predominantly and reproducibly associated with pathological levels of tau isoforms, but also with amyloid levels, agi...
Source: The Journal of Alzheimers Association - Category: Psychiatry Tags: Alzheimers Dement Source Type: research
CONCLUSIONS: The study demonstrates the high frequency of social cognition impairment 3 years after the first-ever stroke in young patients. Doctors and nurses should be sensitized to cognitive handicap after stroke because of difficulties for rehabilitation and returning to work. PMID: 31633560 [PubMed - as supplied by publisher]
Source: Alzheimer Disease and Associated Disorders - Category: Psychiatry Tags: Alzheimer Dis Assoc Disord Source Type: research
DISCUSSION: Results suggest that combinations of nongenetic risk factors confer more risk for young onset vascular dementia, and possibly primary degenerative YOD, than a single factor on its own. Compared with their same-age peers, some people with YOD experience a lifetime of risk exposure starting from early in life. PMID: 31633559 [PubMed - as supplied by publisher]
Source: Alzheimer Disease and Associated Disorders - Category: Psychiatry Tags: Alzheimer Dis Assoc Disord Source Type: research
CONCLUSIONS: The use of both prescription drugs and supplements increased over time, except for decreases in ginkgo and vitamin E. Prescription drug use appeared in line with prescribing guidelines. Supplement use was associated with higher education and better self-rated health; it persists despite a lack of supportive evidence. PMID: 31633558 [PubMed - as supplied by publisher]
Source: Alzheimer Disease and Associated Disorders - Category: Psychiatry Tags: Alzheimer Dis Assoc Disord Source Type: research
DISCUSSION: On the basis of the findings, this study showed evidence that increase in NPS burden (reflected by increase in NPI) over time predicts conversion to AD, whereas stability of symptoms (reflected by stable NPI score) favors nonconversion. Further study should investigate the underlying mechanisms that drive both NPS burden and cognitive decline. PMID: 31633557 [PubMed - as supplied by publisher]
Source: Alzheimer Disease and Associated Disorders - Category: Psychiatry Tags: Alzheimer Dis Assoc Disord Source Type: research
DISCUSSION: These findings demonstrate that SMCs are associated with lower scores on objective neuropsychological measures among older AAs. Additional work is needed to determine whether SMCs are further associated with a risk for clinical transition to mild cognitive impairment or dementia among AA older adults. PMID: 31633556 [PubMed - as supplied by publisher]
Source: Alzheimer Disease and Associated Disorders - Category: Psychiatry Tags: Alzheimer Dis Assoc Disord Source Type: research
CONCLUSIONS: In elderly individuals with T1DM, we found associations between dLOC and cognition overall and in men but not women. Underlying sex differences should be considered in future research or interventions on psychosocial characteristics for cognition. PMID: 31633555 [PubMed - as supplied by publisher]
Source: Alzheimer Disease and Associated Disorders - Category: Psychiatry Tags: Alzheimer Dis Assoc Disord Source Type: research
In humans, oxidative stress is involved in the development of diabetes, cancer, hypertension, Alzheimers' disease, and heart failure. One of the mechanisms in the cellular defence against oxidative stress is the activation of the Nrf2-antioxidant response element (ARE) signalling pathway. Computation of activity, efficacy, and potency score of ARE signalling pathway and to propose a multi-level prediction scheme for the same is the main aim of the study as it contributes in a big amount to the improvement of oxidative stress in humans. Applying the process of knowledge discovery from data, required knowledge is gathered an...
Source: IET Systems Biology - Category: Biology Source Type: research
Earlier this year two phase 3 trials of aducanumab for Alzheimer's disease were scrapped -- but in a surprising about-face, new data from the studies put the drug back on the table.Medscape Medical News
Source: Medscape Neurology and Neurosurgery Headlines - Category: Neurology Tags: Neurology & Neurosurgery News Source Type: news
The drug company Biogen Inc. says it will seek federal approval for a medicine to treat early Alzheimer's disease, a landmark step toward finding a treatment that can alter the course of the most common form of dementia
Source: ABC News: Health - Category: Consumer Health News Tags: Health Source Type: news
More News: Alzheimer's | Brain | Diets | Genetics | Neurology | Nutrition | Pathology | Selenium | Sodium