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How tangled proteins kill brain cells, promote Alzheimer's, CTE

A University of Colorado Boulder study reveals that tau aggregates interfere with RNA splicing, leading to neurodegeneration in Alzheimer's disease and other tauopathies. The findings provide new insights into the mechanism of action of tau tangles, shedding light on potential therapeutic targets.

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Women accumulate Alzheimer's-related protein faster

Research from Lund University in Sweden suggests that women accumulate Alzheimer's-related protein tau at a higher rate than men. The study found a 75% higher accumulation rate of tau in women compared to men in the temporal lobe affected by the disease.

Animal model opens way to test Alzheimer's disease therapies

Researchers have developed a new animal model of early-stage Alzheimer's disease in rhesus macaques, which could enable better testing of new treatments. The model replicates the spread of misfolded tau proteins through brain circuits, similar to human disease progression.

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Anker Laptop Power Bank 25,000mAh (Triple 100W USB-C) keeps Macs, tablets, and meters powered during extended observing runs and remote surveys.

Study identifies novel mechanisms that cause protein clumping in brain diseases

A study published in Proceedings of the National Academy of Sciences reveals that liquid-liquid phase separation facilitates tau protein aggregation, a hallmark of neurodegenerative disorders. The researchers discovered a novel regulatory mechanism involving different variants of tau protein, which may influence disease clinical outcomes.

Tau protein changes in Alzheimer's disease correlate with dementia stage

Research reveals that tau protein undergoes stepwise chemical modifications over time, correlating with dementia stage in Alzheimer's disease. The discovery suggests that multiple drugs may be necessary to target tau effectively, with early intervention requiring different therapeutics compared to late-stage treatment.

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Cause of Alzheimer's disease traced to mutation in common enzyme

A study by Tokyo Metropolitan University reveals that a specific MARK4 mutation causes tau protein to aggregate in the brain, leading to Alzheimer's disease. The mutated enzyme makes tau proteins sticky and insoluble, causing neurons to die and memory functions to impair.

Penn Medicine researchers discover a rare genetic form of dementia

Researchers discovered a novel mutation in the VCP gene leading to a buildup of tau proteins and neuronal vacuoles, characteristic of Vacuolar Tauopathy (VT), a rare neurodegenerative disease. The study suggests a new therapeutic target for Alzheimer's disease by boosting VCP activity to break up protein aggregates.

New mouse model of tau propagation

A new mouse model shows that injecting synthetic assembled tau protein causes tau accumulation in wild-type mice, spreading to connected regions. This study establishes that tau assembly does not require mutation or overexpression.

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Unlocking the mystery of tau for treatment of neurodegenerative diseases

Researchers discovered a novel role of tau specific to FTLD spectrum diseases, contributing to conditions like ALS, PSP, and CBD, but not AD and Pick's disease. The study proposes an imbalanced accumulation of tau model, where FUS and SFPQ regulate MAPT processing, leading to increased 4-repeat tau levels.

Experimental drug for Alzheimer's may help children with autism

Researchers discovered deposits of the tau protein typically found in Alzheimer's patients in the brain of an autistic child with ADNP syndrome. An experimental drug called NAP successfully restored normal function to damaged nerve cells in models of ADNP syndrome, offering new hope for treating this genetic disorder.

Why memory-forming neurons are vulnerable to Alzheimer's

A new study sheds light on the molecular factors that render entorhinal brain cells uniquely sensitive to degeneration. Researchers found that a suite of genes is likely involved in making these neurons easy targets for degeneration, with PTBP1 playing a major role.

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Plasticity may make neurons vulnerable to Alzheimer's disease

Researchers found that neurons with high remodeling activity are more vulnerable to Alzheimer's disease and die when their remodeling goes awry. The study, which linked amyloid-beta and tau proteins at the genetic and molecular levels, provides insights into the disease's progression.

How toxic protein spreads in Alzheimer's disease

Researchers at Lund University and McGill University found that toxic tau protein spreads in the human brain via connected neurons, facilitated by beta-amyloid. The spread of toxic tau leads to widespread neuronal death and eventual dementia.

Tracking tau

A study published in Nature reveals that the low-density lipoprotein receptor-related protein 1 (LRP1) plays a key role in the spread of pathological tau proteins between neurons. By inhibiting LRP1 expression, researchers were able to reduce tau spread in mice, offering new hope for potential treatments.

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Alzheimer's and an unusual molecular chaperone

Researchers from University of Konstanz discover that a molecular chaperone helps form Alzheimer fibrils by exposing a vulnerable area on the protein tau, preventing longer, more toxic fibril formation. The findings suggest a possible defense mechanism against Alzheimer's disease.

Gene variants may increase susceptibility to accumulate Alzheimer's protein tau

A Mayo Clinic study found that genetic variants on chromosomes 1 and 5 were linked to higher tau levels in older adults. Participants with these variants had about 10% higher tau levels than those without them. The research suggests that genes previously linked to Alzheimer's risk may not be associated with tau accumulation.

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Beta-arrestin-2 increases neurotoxic tau driving frontotemporal dementia

A University of South Florida study suggests beta-arrestin-2 can lead to increased accumulation of neurotoxic tau tangles in the brain, causing forms of dementia. The researchers found that oligomerized beta-arrestin-2 disrupts protective clearance processes, leading to disease-causing tau buildup.

Tumbleweeds or fibrils: Tau proteins need to choose

Tau proteins exhibit distinct aggregation behaviors, with phosphorylation influencing their formation of either solid fibrils or disordered clumps. The researchers' findings offer new insights into the causes of Alzheimer's and frontotemporal dementia, potentially leading to the development of therapeutic interventions.

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NIH scientists develop test for uncommon brain diseases

Scientists have linked abnormal tau in the brain to at least 25 neurodegenerative diseases, but current diagnosis requires analyzing brain tissue after death. The new test uses cerebrospinal fluid to detect abnormal tau, offering hope for diagnosing less common neurological diseases like Alzheimer's.

Tracking Alzheimer's disease pathology in single neuronal cells

University of Warwick researchers introduce fluorescently labelled Tau oligomers into single brain neurons and observe significant effects on action potential dynamics and synaptic transmission. They find that Tau oligomers interfere with memory storage by mis-localising at synapses.

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Alzheimer's disease destroys neurons that keep us awake

Researchers at UC San Francisco have found that Alzheimer's disease directly attacks brain regions responsible for wakefulness during the day, leading to excessive daytime napping. This damage is associated with tau protein buildup, which contributes more directly to brain degeneration than amyloid protein.

Celestron NexStar 8SE Computerized Telescope

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Apple AirPods Pro (2nd Generation, USB-C)

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How do protein tangles get so long in Alzheimer's?

Researchers at Ohio State University have found that tau protein aggregates in Alzheimer's disease can grow by joining end-to-end, forming longer filaments. This discovery helps explain the formation of toxic aggregates and may inform the development of new drug candidates.

Study examines women, men and brain marker of Alzheimer's disease

A study examining nearly 300 clinically normal adults found that women showed more tau deposits in the brain than men, associated with greater Aβ plaque deposits, supporting potential reasons for differences in AD risk between men and women. The findings may be limited by the study population's age and demographic characteristics.

With less sleep, tau release in the brain goes up

A new study finds that sleep deprivation increases tau levels in the brain, a key protein associated with neurodegeneration and Alzheimer's disease. The researchers suggest optimizing the sleep-wake cycle as a potential treatment target to prevent Alzheimer's.

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Sleep deprivation accelerates Alzheimer's brain damage

A recent study published in Science has found that sleep deprivation increases levels of the key Alzheimer's protein tau, leading to accelerated brain damage and dementia. In mice and people, researchers discovered that disrupted sleep causes tau tangles to spread through the brain, a hallmark of Alzheimer's disease.

Neurons with good housekeeping are protected from Alzheimer's

A new study found that certain neurons protect themselves from Alzheimer's by clearing toxic tau proteins, which accumulate in sluggish cells. The discovery suggests new treatment possibilities to support natural defense mechanisms against neurodegenerative diseases.

Sky & Telescope Pocket Sky Atlas, 2nd Edition

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One type of brain cell may invite Alzheimer's

Excitatory neurons are more susceptible to abnormal tau protein accumulation, a key factor in Alzheimer's disease progression. The study identifies genetic differences between excitatory and inhibitory neurons that may explain their vulnerability.

New information on the pathological mechanisms of Alzheimer's disease

A recent study by the University of Helsinki reveals that pathological tau triggers a safety valve mechanism in cell membranes, leading to accelerated neuronal cell death and loss of synapses. Omega-3 fatty acids have been found to modify the microstructure of cell membranes, capturing tau aggregates within cells.

Aranet4 Home CO2 Monitor

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Tau interferes with nuclear transport in Alzheimer's disease

Researchers have found that tau protein interferes with the nucleus's ability to communicate with the cell, disrupting the function of the nuclear pore complex. This alteration accelerates tau aggregation and neurofibrillary tangle formation, leading to neural dysfunction and death in Alzheimer's disease.

Tau mutations may increase cancer risk

Researchers discovered that tau protein mutations can increase cancer risk by up to 3.72 times, highlighting a new association between neurodegenerative disorders and cancer. The study's findings suggest that clinicians should monitor patients with tau mutations for their cancer risk, in addition to attending to neurodegeneration.

Fluke 87V Industrial Digital Multimeter

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