Alzheimer's desease is the most common age-related neurodegenerative disorder, and cognitive problems such as defects in learning and memory are of its symptoms.  Among the factors involved in the pathogenesis of the disease are biochemical disorders in protein production, oxidative stress, decreased acetylcholine secretion and inflammation of the brain tissue. Extra-neuronal accumulation ...

Amyloid fibrils and plaques are detected in the brain tissue of patients affected by Alzheimer’s disease, but have also been found as part of normal physiological processes such as bacterial adhesion. Due to their highly organized structures, amyloid proteins have also been used for the development of nanomaterials, for a variety of applications including biomaterials for tissue engineering, na...

Several radiotracers have been employed to bind amyloid plaques in the brain for differential diagnosis of neurodegenerative disease, open possibility measure vivo pathogenic processes implicated Alzheimer disease (AD) and potential detect at earliest stages with a role clinical trials’ longitudinal assessment. Visual reading is clinically adequate clearly positive or negative cases but adoptio...

Endogenous metals such as zinc may contribute to beta-amyloid (Abeta) aggregation and hence the plaque formation. In the present study, we examined brains of four Swedish mutant amyloid precursor protein (APP) transgenic mice at 12 months of age for histochemically reactive zinc in the plaques. Here, we report that all the Congo red (+) mature plaques contained chelatable zinc, as demonstrated ...

The defining features of Alzheimer disease (AD) include conspicuous changes in both brain histology and behavior. The AD brain is characterized microscopically by the combined presence of 2 classes of abnormal structures, extracellular amyloid plaques and intraneuronal neurofibrillary tangles, both of which comprise highly insoluble, densely packed filaments. The soluble building blocks of thes...

In 2012, florbetapir (F) (Amyvid) received US Food and Drug Administration approval as a diagnostic agent for detecting neuritic (β-amyloid) plaques in living patients. Although such approval is specifically not extended to the use of florbetapir as a single definitive diagnostic test for Alzheimer disease dementia (ADD), it is of considerable importance to examine its potential in this regard....

Abstract Here, we report the results of experiments regarding chemical repositioning 4‐(2‐hydroxyethyl)‐1‐piperazine ethane sulfonic acid ( HEPES ), a representative buffering agent. In this work, confirmed that could disaggregate amyloid plaques, hallmark Alzheimer's disease, and verified its sustained‐release system (release for up to 2 weeks) via hybridization with biocompatible polymer (Eud...

β-amyloid peptides (Aβ) are generated in intracellular compartments of neurons and secreted to form cytotoxic fibrils plaques. Dysfunctional membrane trafficking contributes aberrant Aβ production Alzheimer's disease. Endosomes represent one the major sites for recently Golgi has re-emerged also as a location amyloid precursor protein (APP) processing production. Based on recent findings, here ...

We propose a method for selecting pre-symptomatic subjects likely to have amyloid plaques in the brain, based on the automatic analysis of neuropsychological and MRI data and using a cross-validated binary classifier. By avoiding systematic PET scan for selecting subjects, it reduces the cost of forming cohorts of subjects with amyloid plaques for clinical trials, by scanning fewer subjects but...