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Tag: "amyloid" at biology news

The urban evolution lab

...Antwerp are the first to show that the quantity of amyloid protein in brain cells is a major risk factor for ...h has previously shown a direct connection between amyloid protein and the development of senile plaques and loss of cells. Amyloid protein originates when it ...

Researchers discover a new genetic cause of Alzheimer's disease

...Antwerp are the first to show that the quantity of amyloid protein in brain cells is a major risk factor for ...h has previously shown a direct connection between amyloid protein and the development of senile plaques and loss of cells. Amyloid protein originates when it ...

New compound stops brain cell degeneration in Alzheimer's disease

...of the neuroinflammatory cascade and reduced human amyloid beta-induced glia activation in a mouse specially designed to develop many of the signs of Alzheimer's disease, including neuroinflammation, neuronal and synaptic degeneration and behavioral deficits. The compound also restored normal levels of mark...

'Bad' enzymes may wear white hats after stroke

...licated in Alzheimer's disease. It seems that beta amyloid might increase levels of MMP-9 where MMPs would harm rather than help, and statins might help counteract that. So statins could play a role in treating Alzheimer's disease." Wang learned of Lo's research during her undergraduate years at Harvard, w...

DNA gene vaccine protects against harmful protein of Alzheimer's disease

...id-beta 16, or with a gene vaccine that lacked any amyloid genes. These treatments did not cause antibody production, and the mice showed the large amounts of amyloid-beta 42 brain plaques normally seen in animals with these mutations. The gene injection showed superior results compared to a previous human ...

Variant prion protein causes infection but no symptoms

...ons at UCSD, however, confirmed that they produced amyloid fibrils, an abnormal form of prion protein, and that they even had brain lesions. More remarkably, according to Dr. Chesebro, the diseased brain tissue resembled that found in Alzheimer's disease rather than in scrapie. Chesebro mentions two theorie...

Targeting a key enzyme with gene therapy reversed course of Alzheimer's disease in mouse models

...own the gene that helps produce the characteristic amyloid plaques that are one of the hallmarks of Alzheimer.... These plaques are formed when enzymes cleave the amyloid precursor protein (APP) releasing the toxic beta amyloid fragments that clump together to form the s...

Unweaving amyloid fibers to solve prion puzzles

... findings give us some fundamental insights in how amyloid fibers form," says Whitehead Member Susan Lindquis...ntifying the intermolecular contacts that hold the amyloid fiber together." Amyloid fibers are often composed of prions--proteins that misfold and recruit nei...

U of MN researchers reverse memory loss in mice

...hich are tangled bundles of fibers in neurons, and amyloid deposits, a toxic build-up of plaque in the brain. The researchers found that even after the memory loss was regained in the mice, the tangles remained, and even increased in number. This suggests that the tangles are not a cause of dementia as previ...

Pinpointing a culprit molecule in Alzheimer's disease

...re genetically altered to overproduce mutant human amyloid precursor protein (APP). It is this protein that, when clipped by enzymes, produces the amyloid beta (Ab) peptide that clusters into the amyloid plaque that clogs the brain and kills brain cells. ...

Pinpointing the cause of a neurodegenerative disorder

...protein that causes Parkinson's disease, or of the amyloid precursor protein that causes Alzheimer's disease, can cause pathology," she said. "So, this raises the question of whether mutations in the genes for these proteins enhance their normal action. "Importantly, such insights can now guide studies that...

Fibril Shape Is The Basis Of Prion Strains And Cross-species Prion Infection

...otein, which aggregate into fibrous tangles called amyloid fibrils and cause fatal wasting of brain tissue. T...rions were brought into contact with hamster prion amyloid fibrils, a new strain of mouse fibrils emerged with the ability to infect hamsters but not humans. T...

Nanoscale Diagnostic Sets Sights on Alzheimer's

...fluid sample a miniscule amount of proteins called amyloid ß-derived diffusible ligands (ADDLs). The goal is to detect and validate infinitesimal amounts of the biomarkers in blood. Research by Klein and his colleagues suggests that ADDLs first appear in the earliest stages of Alzheimer's. If the BCA proces...

Duke Chemists Isolating Individual Molecules Of Toxic Protein In Alzheimer's, Parkinson's Disease

...iled assembly process for the toxic protein called amyloid plaque. Such basic understanding, they said, could...ding blocks of the toxic protein polymers known as amyloid fibrils. Atomic force microscopes use a sharp microscopic tip to image surfaces and detect energy di...

Scientists identify molecular events that drive cell senescence

...ulating the immune systems of miceto fight against amyloid proteins that cause the devastating plaquesthat ar...ems of mice to potentiallyfight off plaque-causing amyloid protein in the brain.Their findings appear in today's issue of the Archives of Neurology . "Previo...

Gene vaccine for Alzheimer's disease shows promising results

...ulating the immune systems of miceto fight against amyloid proteins that cause the devastating plaquesthat ar...ems of mice to potentiallyfight off plaque-causing amyloid protein in the brain.Their findings appear in today's issue of the Archives of Neurology . "Previo...

Key molecule in plant photo-protection identified

... antibody for a key component of brain plaques,the amyloid beta (Abeta) peptide. In areas of the brain wherea...s. One, utilized byscientists at Eli Lilly, causes amyloid plaques to build up, creatingthe Alzheimer's-like condition. The second, developed by scientists atW...

Mouse brain cells rapidly recover after Alzheimer's plaques are cleared

... antibody for a key component of brain plaques,the amyloid beta (Abeta) peptide. In areas of the brain wherea...s. One, utilized byscientists at Eli Lilly, causes amyloid plaques to build up, creatingthe Alzheimer's-like condition. The second, developed by scientists atW...

Neuronal 'traffic jam' marks early Alzheimer's disease

... that underlies Alzheimer's pathology, called beta amyloid precursor protein (beta-APP), triggers defects in ...of beta-APP is cleaved to form an aberrant form of amyloid beta (A-beta) peptide that makes up the plaques that surround the neurons of people with Alzheimer's...

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