Articles tagged with Alzheimer Disease
Researchers have identified an enzyme called puromycin-sensitive aminopeptidase (PSA) that snips apart abnormal protein tangles in the brain, potentially providing a protective mechanism against neurodegeneration. Higher levels of PSA gene expression were found in cerebellum regions resistant to neurodegeneration.
Researchers found that mice with reduced levels of the acetylcholine transporter had impaired object recognition and social recognition abilities. The study suggests that cholinergic deficits may contribute to cognitive decline in disorders like Alzheimer's disease and aging.
Researchers found that drinking three or more servings of fruit and vegetable juices per week reduces the risk of developing Alzheimer's disease by 76 percent. The benefit was particularly enhanced for subjects carrying a specific genetic marker linked to late-onset Alzheimer's disease.
Researchers at UC Irvine found that stress hormones exacerbate the formation of brain lesions associated with Alzheimer's. The study suggests that managing stress and reducing certain medications prescribed for the elderly could slow down the disease progression.
Researchers at Columbia University Medical Center have successfully restored normal memory and synaptic function in mice suffering from Alzheimer's disease. By increasing the levels of ubiquitin C-terminal hydrolase L1 (Uch-L1), they were able to improve the animals' ability to create new memories.
Researchers found that increasing brain levels of the enzyme ubiquitin C-terminal hydrolase L1 (Uch-L1) can reverse lapses of memory in Alzheimer's mice. This suggests that Uch-L1 may play an important role in the pathogenesis of Alzheimer's disease and could be a new target for therapy.
Researchers and clinicians discuss key issues in dementia diagnosis, including assessment tools and genetic research. The article highlights the importance of early and accurate diagnoses for treatment and progression, as new medications become available.
A high intake of copper, combined with a diet rich in saturated and trans fats, may lead to faster cognitive decline in older adults. Cognitive abilities declined rapidly among participants who consumed the most fat and had high copper levels.
A study found that high-fat diets rich in copper are linked to faster cognitive decline in older adults. Those consuming the most saturated and trans fats, along with higher copper levels, showed accelerated mental decline.
Researchers found two opposing mechanisms protecting cells from protein aggregation: one breaks down aggregates, while the other transforms smaller ones into less toxic high-molecular-weight aggregates. This discovery may lead to new therapies for age-related Neurodegenerative Diseases.
A study by Salk Institute researchers reveals that aging is a critical factor in the buildup of toxic beta amyloid aggregates in the brain. The team found that cells use an unexpected two-pronged strategy to rid themselves of these aggregates, with high molecular weight species being less toxic than smaller ones.
A new study by UMass Lowell researchers suggests that consuming antioxidant-rich apple juice may increase the production of acetylcholine in the brain, leading to improved memory. The study found that mice fed with an apple juice-supplemented diet performed better on traditional Y maze tests.
A study published in the Journal of Gerontology found that higher blood pressure is associated with a decline in walking ability in older persons. The research, led by Dr. Raj Shah, suggests that controlling blood pressure may help prevent gait difficulties in older adults.
Researchers have designed a new type of luminescent sensor that selectively detects zinc in biomedical imaging. The sensor uses europium and can be applied to scanning techniques such as MRI and luminescence imaging, offering potential for improved imaging depth and non-toxic applications.
A prospective study found that higher estrogen levels in older men are associated with an increased risk of dementia. In contrast, testosterone levels were not linked to cognitive decline.
Researchers found that environmental enrichment reduced amyloid angiopathy and Aβ plaque burden in TgCRND8 mice, suggesting a protective effect against Alzheimer's-like brain pathology. Enhanced mental and physical activity may slow disease progression via pathways that prevent Aβ accumulation and enhance its clearance.
Researchers at Case Western Reserve University have found a protein associated with brain cell death in Alzheimer's disease. The study suggests that the multi-domain protein Vav plays a critical role in triggering a cascade of reactions leading to oxidative damage and neural cell death, a key characteristic of Alzheimer's.
A new study using MRI scans has found that the drug donepezil slows brain deterioration in patients with mild cognitive impairment, a condition on the road to Alzheimer's disease. The treatment showed a positive effect on patients who carried the APOE 4 allele, which increases the risk of developing Alzheimer's.
Research suggests that pioglitazone HCl may reduce Alzheimer's progression by decreasing the body's inflammatory reaction to amyloid plaque, a toxic component of the disease. The study showed promising results without serious side effects.
A new Mayo Clinic study finds that executive function, including concentration, decision-making, and higher-order problem solving, deteriorates after memory decline in Alzheimer's disease progression. This decline can cause people to become more impaired in daily activities.
Apolipoprotein E (apoE) may play a role in age-related macular degeneration, despite its link to Alzheimer's disease. The study aims to understand why apoE-4 correlates with reduced incidence of macular degeneration.
Researchers from the University of Georgia have found that laboratory rats possess detailed representations of remembered events, suggesting they may also have episodic-like memory. This discovery could lead to new insights into how humans with Alzheimer's or amnesia lose their memory.
Research found that middle-aged adults with a genetic risk factor for Alzheimer's develop lower levels of A42 protein in their spinal fluid. This could provide an early clue to the development of Alzheimer's, allowing for potential prevention and treatment strategies.
A recent study by Mount Sinai School of Medicine identifies a faulty enzyme, IDE, that breaks down beta-amyloid peptides. Boosting IDE activity may reverse beta-amyloid peptide accumulation and provide a new angle for preventing AD dementia.
Studies in mice genetically engineered to mimic Down's syndrome found that increased expression of one gene, amyloid precursor protein (APP), disrupts transport of nerve growth factor (NGF) and leads to neuronal death. Restoring normal cellular levels of a Trk receptor for BDNF rescues neuronal death.
The study found altered functionality in both the frontal and temporal lobes of the brain, suggesting a breakdown in communication between these regions. This may lead to new diagnostic and preventive strategies for detecting early AD.
A study of 134 older adults found that nearly a third had Alzheimer's disease, yet most did not show obvious dementia symptoms. The research suggests that some people may have a neural reserve that allows them to tolerate significant brain damage without developing cognitive decline.
Researchers developed a safe way to monitor amyloid beta peptide production and clearance rates in the human central nervous system. This test could improve diagnosis and treatment of Alzheimer's disease, as well as help scientists better understand its causes.
Research shows that dietary caloric restriction, particularly low carbohydrate intake, can reduce beta-amyloid peptides and promote a longevity program in the brain. This study suggests that calorie restriction may be a potential preventive strategy for Alzheimer's Disease.
Researchers found that scyllo-inositol prevented the accumulation of amyloid â deposits, a hallmark of Alzheimer's disease, and improved cognitive abilities in mice. The study suggests that scyllo-inositol may be an effective experimental therapy for Alzheimer's disease.
Researchers at UCLA have developed a new method to detect Alzheimer's disease progression using FDDNP PET. The study shows that the worsening of memory and cognitive functions is correlated with increased 18F-FDDNP brain binding, providing valuable information for diagnosis and monitoring therapeutic interventions.
Researchers develop IMPY tracer to visualize abnormal protein in Alzheimer's and prion diseases, providing new directions for future research. The tracer may also aid in early diagnosis of Alzheimer's with single photon emission computed tomography (SPECT) imaging.
The study found that soluble forms of amyloid beta are highly toxic, killing neurons in as little as 12 hours, while fibrillar forms render them useless over a period of days. Researchers hope to develop therapies targeting these different forms of amyloid beta.
Researchers used fruit fly models to study the effects of 14 different Presenilin mutations, finding a correlation between mutation severity and age of onset in human patients. The study supports the view that Presenilin activity affects clinical heterogeneity in early-onset Alzheimer's disease.
Research at Group Health Research Institute found that participants with higher physical function were three times less likely to develop dementia. Regular exercise may help stave off dementia by improving and maintaining physical conditioning, say researchers.
Research links lower physical performance scores to higher risk of dementia, including Alzheimer's disease, in older adults. Those with better physical function tend to have slower cognitive decline and lower risk of developing dementia.
Researchers have found diverse ecosystems and promising biological samples at newly discovered deep-sea reefs off Miami and Bimini. The team aims to explore these areas to identify factors responsible for their incredible diversity and potentially find new medicines.
Researchers have identified a potential new treatment strategy for Alzheimer's disease by developing compounds that bind to the p75NTR receptor, preventing neurotrophin-mediated cell death. The study suggests these compounds may inhibit the death of oligodendrocytes and promote neuronal survival.
Researchers have discovered that neurons can produce a key protein linked to Alzheimer's disease under certain conditions. The study uses a unique mouse model to show that apoE production is regulated by the brain's response to injury, shedding light on the mechanisms underlying this complex disorder.
A collaborative care approach involving primary care physicians and advanced practice nurses significantly reduced behavioral symptoms in Alzheimer's disease patients. This resulted in lower caregiver stress and depressive symptoms without the use of anti-psychotics or sedative medications.
The Mayo Clinic study found that brains of people with mild cognitive impairment showed structural changes similar to Alzheimer's disease, but not as severe. The researchers believe this transitional state may indicate a person is on the road to developing Alzheimer's.
Researchers studied brains of individuals with amnestic mild cognitive impairment and found similar changes as those with Alzheimer's disease, including neurofibrillary tangles. The study suggests that existing tests need to be more sensitive to differentiate between underlying abnormalities.
Reddy's study found a selective loss of both presynaptic and postsynaptic proteins in AD patients' brains, highlighting the need for further investigation into synaptic damage. The award recognizes his work on understanding molecular and cellular bases of neurodegenerative diseases.
OHSU researchers found that beta amyloid can be found both inside and outside of brain cell mitochondria in Alzheimer's mice, suggesting a key role in the disease. Mitochondrial oxidative damage may contribute to the progression of Alzheimer's by producing hydrogen peroxide.
Researchers at MIT have discovered a potential new treatment for Alzheimer's disease that delays cognitive decline using a combination of omega-3 fatty acids and two other compounds. The cocktail treatment has been shown to increase the formation of brain cell synapses, which are damaged in Alzheimer's patients.
Researchers found that larger social networks are associated with reduced cognitive impairment in people with Alzheimer's disease pathology. The study suggests that healthy interactions with friends and family can have a positive impact on disease prevention.
A new genetic cause of Alzheimer's disease has been discovered, with increased amyloid precursor protein expression being a significant risk factor. The study found that genetic variations in the promoter region can increase gene expression and contribute to the development of Alzheimer's disease.
Researchers explore risk factors for dementia, including the Mediterranean diet and obesity, as well as novel treatments for Alzheimer's and multiple sclerosis. Experimental therapies also show promise in treating ALS and stroke, with potential applications in other neurodegenerative diseases.
A prospective community-based study of 2,258 non-demented people found that higher adherence to the Mediterranean diet was associated with a significantly lower risk of developing Alzheimer's disease. The association remained significant even after adjusting for potential confounders.
A study of 1,271 elderly patients found that those with a history of stroke showed a more rapid decline in memory and cognitive abilities, particularly among men. The association was stronger in individuals without the APOE4 allele, which is linked to Alzheimer's disease.
Researchers developed a new PET scan technique to detect Alzheimer's disease plaques and tangles, while the ApoE gene was found to significantly increase stroke risk in Asian populations. Foramen ovale closure surgery also showed promise in reducing migraine headaches in patients with an open heart opening.
Mild cognitive impairment affects 9% of those 70 to 79 and nearly 18% of those 80 to 89. Education years also impact risk: 25% for up to eight years, 14% for nine to 12 years, and 8.5% for greater than 16 years
A study of adults with memory complaints found greater complaints were associated with global brain decline over two years. Those with the Alzhiemer's disease genetic risk factor showed more pronounced declines in temporal regions linked to memory functions.
Researchers at Cornell University and Harvard Medical School found that Pin1 enzyme accelerates amyloid precursor protein (APP) toggle between its good and bad forms, preventing plaque buildup and tangles. This discovery opens up new therapeutic approaches to treating Alzheimer's.
A new MRI study found a nearly perfect correlation between iron levels in brain regions and those reported by past post-mortem studies. The study suggests that age-related brain iron accumulation is a modifiable risk factor for degenerative brain diseases, including Alzheimer's disease.
Researchers found that insulin depletion in the brain triggers neurodegeneration, cognitive decline, and oxidative stress, leading to Alzheimer's symptoms. The study provides evidence for impaired insulin signaling as a key factor in Alzheimer's disease progression.
Karen Duff, a young British scientist, received the Potamkin Prize for her innovative work on developing transgenic mouse models of age-related human brain diseases. Her research has led to significant advancements in understanding Alzheimer's disease and identifying potential treatments.
A new study found that the Pin1 enzyme helps protect against age-related neurodegeneration and establishes a link between amyloid plaques and tau tangles. The researchers discovered that Pin1 regulates APP cleavage and amyloid beta production, preventing plaque formation.
New research reveals Pin1 enzyme plays a key role in preventing Alzheimer's disease by regulating APP cleavage and amyloid beta production. The study establishes a direct link between amyloid plaques and tau tangles, two abnormal structures associated with the disease.
Researchers found that donepezil significantly improved cognitive function and daily activities in patients with severe Alzheimer's disease. The study, published in The Lancet, showed a 20% reduction in dementia symptoms and an increase in quality of life for patients on the treatment.