Articles tagged with Alzheimer Disease
A team of researchers from The Mount Sinai Hospital has made a groundbreaking discovery into the genetic and molecular mechanisms that predispose individuals to Alzheimer's disease. They identified 21 candidate risk genes, including SPI1, which regulates microglia and AD risk.
Microglia that express the APOE4 gene cannot metabolize lipids normally, leading to a buildup of excess lipids that interferes with nearby neurons' ability to communicate. Restoring normal lipid metabolism in microglia may help treat some symptoms of Alzheimer's disease.
A 60-year study found that building mental resilience through education, socializing, and exercise can reduce dementia risk even among those with low childhood cognition or genetic predisposition. Participants with higher cognitive reserve index and reading ability showed slower cognitive decline.
Researchers at KAIST developed a novel fusion protein drug, αAβ-Gas6, which efficiently eliminates amyloid beta (Aβ) without causing inflammatory side effects. The study showed that αAβ-Gas6 promoted the robust uptake of Aβ without inflammation and neurotoxicity.
Researchers discovered that vitamin K acts as an antioxidant, inhibiting ferroptotic cell death and identifying FSP1 as the warfarin-insensitive enzyme responsible. This finding has implications for treating Alzheimer's disease and acute organ injuries.
Research reveals that physical activity has a noticeable effect on almost all brain regions, with higher intensity and duration increasing brain volume and cortical thickness. The hippocampus, a key memory center, benefits most from physical activity, which can help counteract age-related loss of brain matter.
Researchers found that microscopic blood vessel disease in the brain's white matter is associated with worse cognitive function and memory deficits in individuals with Alzheimer's. Lifestyle changes such as reducing hypertension, obesity, diabetes, and inactivity may help prevent or slow disease progression.
Timothy Huang has been awarded $2.8 million by the National Institute on Aging to study the SORLA gene and its link to Alzheimer's disease. The project will use human stem cells transplanted into mice to determine how specific mutations impact microglia function.
A new study by Columbia University Mailman School of Public Health found that sustained low wages during working years are associated with significantly faster memory decline in older age. Low-wage earners experienced approximately one excess year of cognitive aging per a 10-year period compared to those who never earned low wages.
A new study introduces a novel epigenetic predictor, PCBrainAge, that captures aging heterogeneity across multiple brain regions. The tool demonstrates stronger associations with AD dementia and pathologic AD compared to existing age predictors.
Scientists at Tufts University found that varicella zoster virus (VZV) may activate herpes simplex virus (HSV-1), leading to inflammation and accumulation of Alzheimer's associated proteins in the brain. This suggests a new pathway to Alzheimer's disease.
A KAIST research team has discovered a new role for somatostatin, a protein-based neurotransmitter, in reducing the toxicity caused by Alzheimers disease. When somatostatin is met with copper and Aβ proteins, it attenuates the toxicity and agglomeration of metal-Aβ complexes.
Researchers found a rapid decline in sense of smell predicts cognitive impairment, including dementia and smaller brain areas, in individuals with Alzheimer’s disease. The study suggests using smell tests as an early screening tool to identify high-risk patients.
Scientists at the Allen Institute are creating a detailed atlas of brain cells in Alzheimer's disease, shedding light on the cellular roots of the condition. The massive dataset from over 1.2 million neurons could lead to new therapies to slow or halt disease progression.
A new study finds that COVID-19 infections may predispose individuals to developing irreversible neurological conditions, such as Alzheimer's and Parkinson's diseases. The research also suggests that the virus can cause long-term neurodegenerative diseases, particularly in the elderly and other vulnerable populations.
A new study demonstrates that glyphosate successfully crosses the blood-brain barrier and enhances TNF-α levels in mice. The herbicide is linked to increased production of soluble beta amyloid and reduced neuron viability, suggesting potential hazards to neurological health.
Researchers have found correlations between retina and brain structures altered in Alzheimer's disease in healthy subjects at risk. These findings suggest the retina may provide information on brain state and changes, paving the way for new diagnostic tools.
A team of UTHSC investigators is testing a new otulin-inhibiting drug to promote tau clearance and reduce neurotoxicity in Alzheimer's patients. The study aims to investigate the link between oxidative stress and otulin activity, which may lead to breakthroughs in treating neurodegenerative disorders.
A new study led by researchers from the University of Michigan and Penn State College of Medicine compared two approaches for people with early form of memory loss: mnemonic strategy training and spaced retrieval training. Mnemonic strategy training showed increased brain activity in areas often affected by Alzheimer's disease, while s...
A recent PLOS Biology study examines the limitations of current anti-amyloid therapies for Alzheimer's disease, suggesting abnormal microglial function and tau tangles as key mechanisms. The authors review clinical trial results and propose new strategies for treating the disease, bringing hope for a cure.
Researchers have developed a new test that can detect even slightly elevated levels of tau protein in cerebrospinal fluid, potentially identifying Alzheimer’s disease at its earliest stages. The method uses optical sensors and 'lab-on-fiber' technology to achieve high sensitivity.
Researchers developed an immuno-infrared sensor that detects Alzheimer's disease biomarkers, including amyloid-beta misfolding, up to 17 years before clinical symptoms. The sensor shows high accuracy in identifying individuals at risk of developing Alzheimer's dementia.
Researchers at University of California - San Diego launch nationwide clinical trial to investigate benfotiamine as a metabolic treatment approach for Alzheimer's disease. The trial aims to determine the effectiveness of high doses of benfotiamine in benefiting people with mild AD or mild cognitive impairment.
Researchers analyzed data from wearable activity monitors on nearly 600 participants to identify changes in movement patterns that may predict cognitive decline. The study found significant differences in activity during waking hours and afternoons, with fragmented activity being a key indicator of mild cognitive impairment or Alzheime...
Researchers found reduced levels of Histone Deacetylase I (HDAC I) in the brains of patients with Alzheimer's disease, linked to deleterious effects of misfolded beta-amyloid and tau proteins. HDAC inhibitors, currently being tested against mild Alzheimer's disease, may be harming patients rather than helping them.
A new study suggests that a unique gene variant supporting cognitive health in older humans may have first emerged to protect against infectious pathogens like gonorrhea. This variant, linked to CD33, allows brain immune cells to break down damaged brain cells and amyloid plaques associated with Alzheimer's disease.
A world-first study has confirmed the link between Alzheimer's Disease and multiple gut disorders, revealing shared genetic architecture. The study suggests that abnormal cholesterol levels play a key role in both conditions, and may lead to new potential treatments for Alzheimer's and gut disorders.
A Colombian woman lived dementia-free for three decades due to a rare genetic mutation, providing valuable insights into the pathology of dementia. Her brain showed distinct patterns of abnormal tau protein aggregation, which may impact treatment and prevention strategies for Alzheimer's disease.
Researchers found evidence of how destructive proteins attack human brain cells and destroy surrounding tissue. The study identified a pivotal mechanism that could be a potential therapy for the disease.
A new study from UTHealth Houston found that whole blood exchange treatments decreased amyloid plaque formation in mice with Alzheimer's disease-causing amyloid precursor proteins. This approach has the advantage of treating the disease in the circulation instead of the brain, potentially bypassing the blood-brain barrier.
A study of almost 21,000 people found that moderate drinking is associated with higher iron levels in the brain and poorer cognitive function. Iron accumulation is a potential mechanism for alcohol-related cognitive decline, which can lead to Alzheimer's and Parkinson's diseases.
A Tokyo University of Science study found that fluoride nanoparticles enhance β-sheet formation in amyloid β proteins, a common feature of Alzheimer's disease. The researchers also discovered that surrounding ions can control this process, paving the way for targeted treatments.
A new Baycrest study found that individuals with no dementia risk factors have similar brain health as people who are 10 to 20 years younger. Lifestyle factors such as managing diabetes, addressing hearing loss, and quitting smoking can reduce cognitive decline by up to three years of aging.
A recent study discovered that brain inflammation may be a key link between Alzheimer's disease risk and sleep disturbance. The research found that age-related increases in brain inflammation can disrupt fast sleep spindles, which are crucial for long-term memory retention. This disruption contributes to age-related memory impairment i...
Studies suggest a link between Fusobacterium nucleatum and Alzheimer's disease, with the bacteria generating systemic inflammation and exacerbating symptoms. Targeting the bacteria could slow periodontal disease progression and potentially slow Alzheimer's progression as well.
The study found that engaging in physical activity reduced the decline in global and domain-specific cognitive function over time, particularly in women. The researchers recommend highlighting the benefits of physical activity to promote brain health and encourage patients to participate. Dr. Geda and Dr. Krell-Roesch are joint recipie...
Researchers at Boston University developed an AI-powered computational model that can detect cognitive impairment from audio recordings of neuropsychological tests. The model was trained on over 1,000 individuals and accurately distinguished between healthy individuals and those with dementia.
Research at Massachusetts General Hospital has identified plasma biomarkers Tau-PT217 and Tau-PT181 as predictors of postoperative delirium. High preoperative concentrations of these biomarkers are associated with increased risk, suggesting a potential early warning sign for patients.
Researchers at the University of Illinois Urbana-Champaign have developed a low-cost ultrasound imaging method to study the relationship between Alzheimer's disease and the brain's vascular system. The technique, which provides high-resolution images of animal microvasculature, may aid in early detection of the disease.
A long-term high-fat diet has been shown to cause significant weight gain and metabolic disorders in mice, leading to anxiety, depression, and worsening Alzheimer's disease. The study suggests a clear link between chronic obesity and diabetes with cognitive decline.
A Flinders University study reveals how a protein called tau transforms into a disease state, providing hope for preventing this process and reducing toxic effects on brain cells. The researchers identified 'master sites' in tau that govern subsequent modifications, leading to a similar state seen in Alzheimer's patients.
A pooled data analysis of available research found that ADHD drugs may successfully treat key aspects of Alzheimer's disease. Noradrenergic drugs, which target the neurotransmitter noradrenaline, showed a small but significant positive effect on overall cognition and a large positive effect on apathy in patients with Alzheimer's disease.
The Nutrition for Dementia Prevention Working Group recommends improving clinical nutrition trials by considering biomarkers, genetic testing, and microbiome analysis. The group suggests utilizing a wider variety of study designs and more personalized approaches to guide future research.
Researchers develop speckle-based compressive imaging technique to improve deep-tissue imaging in Alzheimer's disease studies. The method reduces pixel measurements needed, producing high-resolution images up to 11 times faster and three times bigger than traditional raster-scan approach.
A study published by researchers at the University of Colorado Anschutz Medical Campus found that psychiatric drugs imipramine and olanzapine can improve symptoms of Alzheimer's disease, including boosting cognition and reversing clinical diagnoses.
Researchers at Simon Fraser University developed a biomarker that combines genetic features and brain MRI data to predict the future conversion to Alzheimer's disease. This combination improves the performance in predicting dementia progression, especially for patients with mild cognitive impairment.
A study found that men exhibiting mild behavioural impairment symptoms are at risk of faster cognitive decline compared to women. Researchers identified key behavioral changes, such as apathy and false beliefs, which may help identify people at higher risk of developing dementia.
Researchers elucidated the molecular mechanisms of acetylcholine in learning and memory, revealing a signaling cascade involving protein kinase C. The study opens doors to new therapeutic strategies for Alzheimer's disease.
A new UCLA study found that fixed vial sizes for the controversial Alzheimer's drug aducanumab could result in significant wasteful spending of up to $605 million per year on Medicare. The researchers suggest reducing vial sizes to contain costs and improve the value of future Medicare spending.
A new GPU-based machine learning algorithm, ReAL-LiFE, can rapidly analyze large amounts of data from diffusion Magnetic Resonance Imaging (dMRI) scans of the human brain. This allows for faster analysis and prediction of brain connectivity, enabling better understanding of brain-behaviour relationships at scale.
A comprehensive survey of scientific literature suggests that nearly all known biological pathways are linked to Alzheimer's disease. The study found that immune, metabolic and depression-related pathways were consistently cited as major mechanisms contributing to the disease.
Researchers found that Treponema denticola, a periodontal pathogen, induces Alzheimer-like tau hyperphosphorylation in mice. The study showed that T. denticola promotes neuroinflammation and increases tau phosphorylation at specific sites.
A new study from UTHealth Houston found that flu vaccination was associated with a 40% lower risk of developing Alzheimer’s disease in US adults over a four-year period. The study analyzed a large sample of patients and found that consistent flu vaccination every year had the strongest protective effect.
Researchers found that COVID-19 positive individuals had a higher risk of developing Alzheimer’s disease, Parkinson’s disease, and ischaemic stroke compared to those who tested negative. The study also revealed increased risks for intracerebral haemorrhage and decreased frequencies for other neurodegenerative illnesses.
Researchers at Karolinska Institutet have improved the ability of a protein to repair oxidative DNA damage, creating a new drug development concept. The technique can lead to improved treatments for diseases involving oxidative stress.
Researchers at Boston University School of Medicine have discovered that the APOE4 gene is unique to patients with Alzheimer's disease and causes specific defects in human brain cells. The study provides new insights into the underlying mechanisms of the gene, which may lead to new therapeutic strategies to combat the condition.
Researchers discovered a link between the astrocytic urea cycle and Alzheimer's disease memory loss. The study found that the urea cycle helps clean up toxic amyloid-beta aggregates, but its activation also causes the production of harmful byproducts, leading to neuronal death.
A recent study published in eLife has revealed that high levels of soluble tau protein impair signaling between neurons, leading to cognitive decline. The research suggests that targeting the binding site of dynamin, a protein that binds to microtubules, may rescue synaptic transmission and prevent memory impairment.
Researchers are developing a health scorecard to predict dementia risk using brain scans, genetics, and biomarkers. The study will analyze diverse populations between ages 65-90, providing insights into contributing factors like diabetes or hypertension that can be addressed to modify the risk.
Researchers from Boston University School of Medicine provide comprehensive information on mass spectrometry-based studies of the brain's extracellular matrix in neurological disorders. The study highlights changes in ECM molecule expression associated with neurodegenerative diseases, providing new avenues for treatment and diagnosis.