Homocysteine fibrillar assemblies display cross-talk with Alzheimer's disease β-amyloid polypeptide

D Sade Yazdi, D Laor Bar-Yosef… - Proceedings of the …, 2021 - National Acad Sciences
High levels of homocysteine are reported as a risk factor for Alzheimer's disease (AD).
Correspondingly, inborn hyperhomocysteinemia is associated with an increased …

Seeding of proteins into amyloid structures by metabolite assemblies may clarify certain unexplained epidemiological associations

D Sade, S Shaham-Niv, ZA Arnon… - Open …, 2018 - royalsocietypublishing.org
The accumulation of various metabolites appears to be associated with diverse human
diseases. However, the aetiological link between metabolic alteration and the observed …

Protein N-homocysteinylation induces the formation of toxic amyloid-like protofibrils

P Paoli, F Sbrana, B Tiribilli, A Caselli, B Pantera… - Journal of molecular …, 2010 - Elsevier
Previous works reported that a mild increase in homocysteine level is a risk factor for
cardiovascular and neurodegenerative diseases in humans. Homocysteine thiolactone is a …

[HTML][HTML] Effect of N-homocysteinylation on physicochemical and cytotoxic properties of amyloid β-peptide

S Khodadadi, GH Riazi, S Ahmadian, E Hoveizi… - FEBS letters, 2012 - Elsevier
Hyperhomocysteinemia has recently been identified as an important risk factor for
Alzheimer's disease (AD). One of the potential mechanisms underlying harmful effects of …

Hyperhomocysteinemic Alzheimer's mouse model of amyloidosis shows increased brain amyloid β peptide levels

J Pacheco-Quinto, EBR de Turco, S DeRosa… - Neurobiology of …, 2006 - Elsevier
Recent epidemiological and clinical data suggest that elevated serum homocysteine levels
may increase the risk of developing Alzheimer's disease (AD), but the underlying …

Homocysteine exacerbates β‐amyloid pathology, tau pathology, and cognitive deficit in a mouse model of Alzheimer disease with plaques and tangles

JG Li, J Chu, C Barrero, S Merali… - Annals of neurology, 2014 - Wiley Online Library
Objective High level of homocysteine (Hcy) is a recognized risk factor for developing
Alzheimer disease (AD). However, the mechanisms involved are unknown. Previously, it …

Heparin induces α-synuclein to form new fibril polymorphs with attenuated neuropathology

Y Tao, Y Sun, S Lv, W Xia, K Zhao, Q Xu… - Nature …, 2022 - nature.com
Abstract α-Synuclein (α-syn), as a primary pathogenic protein in Parkinson's disease (PD)
and other synucleinopathies, exhibits a high potential to form polymorphic fibrils. Chemical …

Homocysteine metabolism is associated with cerebrospinal fluid levels of soluble amyloid precursor protein and amyloid beta

A Oikonomidi, P Lewczuk, J Kornhuber… - Journal of …, 2016 - Wiley Online Library
Disturbed homocysteine metabolism may contribute to amyloidogenesis by modulating the
amyloid precursor protein (APP) production and processing. The objective of this study was …

Aβ protofibrils possess a stable core structure resistant to hydrogen exchange

I Kheterpal, HA Lashuel, DM Hartley, T Walz… - Biochemistry, 2003 - ACS Publications
Protofibrils are transient structures observed during in vitro formation of mature amyloid
fibrils and have been implicated as the toxic species responsible for cell dysfunction and …

Amyloid-β forms fibrils by nucleated conformational conversion of oligomers

J Lee, EK Culyba, ET Powers, JW Kelly - Nature chemical biology, 2011 - nature.com
Amyloid-β amyloidogenesis is reported to occur via a nucleated polymerization mechanism.
If this is true, the energetically unfavorable oligomeric nucleus should be very hard to detect …