Results 111 to 120 of about 1,464,719 (336)

Beta-amyloid imaging in dementia [PDF]

Yeungnam University Journal of Medicine, 2018
Alzheimer's disease (AD) is a neurodegenerative disorder associated with extracellular plaques, composed of amyloid-beta (Aβ), in the brain. Although the precise mechanism underlying the neurotoxicity of Aβ has not been established, Aβ accumulation is the primary event in a cascade of events that lead to neurofibrillary degeneration and dementia.
openaire   +3 more sources

Amyloidogenic Peptide Fragments Designed From Bacterial Collagen‐like Proteins Form Hydrogel

Advanced Functional Materials, EarlyView.
This study identified amyloidogenic sequence motifs in bacterial collagen‐like proteins and exploited these to design peptides that self‐assemble into β‐sheet fibers and form hydrogels. One hydrogel supported healthy fibroblast growth, showing promise for biocompatible materials. Our work demonstrates that bacterial sequences can be harnessed to create
Vamika Sagar, Xuen J Ng, Lukas Lechel, Ashish Chand Rajwar, Hendrik Bargel, Abhishek A. Jalan   +5 more
wiley   +1 more source

The Protective Role of Carnosic Acid against Beta-Amyloid Toxicity in Rats

The Scientific World Journal, 2013
Oxidative stress is one of the pathological mechanisms responsible for the beta- amyloid cascade associated with Alzheimer’s disease (AD). Previous studies have demonstrated the role of carnosic acid (CA), an effective antioxidant, in combating oxidative
H. Rasoolijazi, N. Azad, M. T. Joghataei, M. Kerdari, F. Nikbakht, M. Soleimani   +5 more
doaj   +1 more source

Beta-amyloid oligomers: recent developments

BioMolecular Concepts, 2011
AbstractRecent studies point to a critical role of soluble β-amyloid oligomers in the pathogenesis of one of the most common neurodegenerative diseases, Alzheimer's disease (AD). Beta-amyloid peptides are cleavage products of a ubiquitously expressed protein, the amyloid precursor protein.
Borutaite Vilmante, Morkuniene Ramune, Valincius Gintaras   +2 more
openaire   +3 more sources

Modular Platform for Rapidly Investigating Long‐Distance Propagation of Human Neural Network Activity

Advanced Healthcare Materials, EarlyView.
This study presents the first human neural organoid culture model capable of rapidly exhibiting long‐distance neural network propagation, thus delivering a system to experimentally investigate large‐scale communication during normal and diseased states.
Megh Dipak Patel, Sailee Sham Lavekar, Ronak Jaisalmeria, Suki Oji, Jazmine Jayasi, Caroline Cvetkovic, Robert Krencik   +6 more
wiley   +1 more source

Strategies to Improve the Lipophilicity of Hydrophilic Macromolecular Drugs

Advanced Healthcare Materials, EarlyView.
Hydrophilic macromolecular drugs can be successfully lipidized by covalent attachment of lipids, by hydrophobic ion pairing with negatively or positively charged surfactants, and by dry or wet reverse micelle formation. Lipophilicity enhancement of hydrophilic macromolecules has several benefits including stability and bioavailability improvement ...
Sera Lindner, Stefan Keim, Soheil Haddadzadegan, Odile Fernandez Romero, Katrin Zöller, Gabriel Stern, Ilaria Cesi, Krum Kafedjiiski, Andreas Bernkop‐Schnürch   +8 more
wiley   +1 more source

The effects of peripheral and central high insulin on brain insulin signaling and amyloid-β in young and old APP/PS1 mice [PDF]

, 2016
Hyperinsulinemia is a risk factor for late-onset Alzheimer's disease (AD). In vitro experiments describe potential connections between insulin, insulin signaling, and amyloid-β (Aβ), but in vivo experiments are needed to validate these relationships ...
Caesar, Emily E, Holtzman, David M, Jiang, Hong, Keyser, Jennifer, Koscal, Lauren J, Macauley, Shannon L, Moritz, Will, Robinson, Grace O, Roh, Joseph, Stanley, Molly   +9 more
core   +2 more sources

Human Brain Vasculature‐on‐a‐Chip Model Constructed With Microvessels Isolated From Cryopreserved Postmortem Human Brain Tissue

Advanced Healthcare Materials, EarlyView.
This manuscript describes the cultivation of viable microvessels from cryopreserved human brain tissue. When embedded in hydrogels and cultured in microfluidic devices, these microvessels exhibit complex architectures reminiscent of arterioles and capillaries, can be perfused, and display intact barrier function. Collectively, these results demonstrate
Brian J. O'Grady, A. Scott McCall, Samuel Cullison, Daniel Chavarria, Matthew S. Schrag, Ethan S. Lippmann   +5 more
wiley   +1 more source

Melatonin-mediated calcineurin inactivation attenuates amyloid beta-induced apoptosis

IBRO Neuroscience Reports
Alzheimer’s disease (AD) is the most common age-related progressive neurodegenerative disorder. The accumulation of amyloid beta-peptide is a neuropathological marker of AD.
Jeong-Min Hong, Ali Newaz Munna, Ji-Hong Moon, Jae-Won Seol, Sang-Youel Park   +4 more
doaj   +1 more source

The novel amyloid-beta peptide aptamer inhibits intracellular amyloid-beta peptide toxicity

Neural Regeneration Research, 2013
Amyloid β peptide binding alcohol dehydrogenase (ABAD) decoy peptide (DP) can competitively antagonize binding of amyloid β peptide to ABAD and inhibit the cytotoxic effects of amyloid β peptide. Based on peptide aptamers, the present study inserted ABAD-DP into the disulfide bond of human thioredoxin (TRX) using molecular cloning technique to ...
Wang, Xu, Yang, Yi, Jia, Mingyue, Ma, Chi, Wang, Mingyu, Che, Lihe, Yang, Yu, Wu, Jiang   +7 more
openaire   +2 more sources