Results 141 to 150 of about 268,148 (374)

Induction of amyloid-β deposits from serially transmitted, histologically silent, Aβ seeds issued from human brains

Acta Neuropathologica Communications, 2020
In humans, iatrogenic transmission of cerebral amyloid-β (Aβ)-amyloidosis is suspected following inoculation of pituitary-derived hormones or dural grafts presumably contaminated with Aβ proteins as well as after cerebral surgeries.
Anne-Sophie Hérard, Fanny Petit, Charlotte Gary, Martine Guillermier, Susana Boluda, Clément M. Garin, The Brainbank Neuro-CEB Neuropathology Network, Suzanne Lam, Marc Dhenain   +8 more
doaj   +1 more source

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

FEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke, Michal Banasik, Rokas Juodeikis, Martin J. Warren, Richard W. Pickersgill   +4 more
wiley   +1 more source

Intercompartmental communication in senescence

FEBS Open Bio, EarlyView.
Senescent cells experience structural changes in the plasma membrane, endoplasmic reticulum, mitochondria, lysosomes, nucleus, and cytoskeleton. These alterations disrupt crosstalk among cellular compartments, impairing vesicular trafficking, contact sites, and molecular flow.
Krystyna Mazan‐Mamczarz, Eleanor J. Wind, Jixiang Leng, Myriam Gorospe   +3 more
wiley   +1 more source

Additional file 2: of The characterization of AD/PART co-pathology in CJD suggests independent pathogenic mechanisms and no cross-seeding between misfolded Aβ and prion proteins

, 2019
Table S2. Correlation analysis between duration of disease and AD/PART pathology. Relative risk ratio (RRR) was calculated by a multinomial logistic regression adjusted by age at death. The lower grades of pathology were chosen as reference categories for the ABC score, Thal phase, CAA and Braak stage. (DOCX 13 kb)
Rossi, Marcello, Kai, Hideaki, Baiardi, Simone, Bartoletti-Stella, Anna, CarlĂ, Benedetta, Zenesini, Corrado, Capellari, Sabina, Tetsuyuki Kitamoto, Parchi, Piero   +8 more
openaire   +1 more source

AMPA-ergic regulation of amyloid-β levels in an Alzheimer’s disease mouse model

Molecular Neurodegeneration, 2018
Background Extracellular aggregation of the amyloid-β (Aβ) peptide into toxic multimers is a key event in Alzheimer’s disease (AD) pathogenesis. Aβ aggregation is concentration-dependent, with higher concentrations of Aβ much more likely to form toxic ...
Jane C. Hettinger, Hyo Lee, Guojun Bu, David M. Holtzman, John R. Cirrito   +4 more
doaj   +1 more source

Galectin-3 promotes Aβ oligomerization and Aβ toxicity in a mouse model of Alzheimer’s disease

Cell Death and Differentiation, 2019
Amyloid-β (Aβ) oligomers largely initiate the cascade underlying the pathology of Alzheimer’s disease (AD). Galectin-3 (Gal-3), which is a member of the galectin protein family, promotes inflammatory responses and enhances the homotypic aggregation of ...
Chih-Chieh Tao, Kuang-Min Cheng, Yun‐Li Ma, W. Hsu, Yan-Chu Chen, J. Fuh, Wei‐Ju Lee, C. Chao, Eminy H Y Lee   +8 more
semanticscholar   +1 more source

One size does not fit all: An in vitro evaluation of the effects of bezafibrate and medroxyprogesterone acetate on human SH‐SY5Y and U‐87 MG cancer cells

FEBS Open Bio, EarlyView.
Drugs previously repurposed to target blood cancers reduced neuroblastoma and glioblastoma cell growth and viability. However, their levels of anticancer activity were different and their clinical application may be problematic due to side effects at effective doses.
Abhishek Kharawatkar, Francesco Michelangeli, Farhat Latif Khanim, Christopher Martin Bunce, William Eustace Basil Johnson   +4 more
wiley   +1 more source

Testing a MultiTEP-based combination vaccine to reduce Aβ and tau pathology in Tau22/5xFAD bigenic mice. [PDF]

, 2019
BackgroundAlzheimer disease (AD) is characterized by the accumulation of beta-amyloid (Aβ) plaques and neurofibrillary tangles composed of hyperphosphorylated tau, which together lead to neurodegeneration and cognitive decline.
Agadjanyan, Michael G, Antonyan, Tatevik, Blurton-Jones, Mathew, Chailyan, Gor, Coburn, Morgan A, Cribbs, David H, Danhash, Emma, Davtyan, Hayk, Ghochikyan, Anahit, Hovakimyan, Armine, Kiani Shabestari, Sepideh, Petrovsky, Nikolai, Petrushina, Irina, Svystun, Olga, Zagorski, Karen   +14 more
core  

In‐Depth Profiling Highlights the Effect of Efgartigimod on Peripheral Innate and Adaptive Immune Cells in Myasthenia Gravis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Myasthenia gravis (MG) is an autoimmune disorder characterized by antibody‐mediated complement activation. Efgartigimod, a neonatal Fc receptor (FcRn) antagonist, is approved for treating generalized MG (gMG). However, its modulatory effects on upstream innate and adaptive immune cells remain largely unexplored.
Lei Jin, Liu Dong, Ying Wang, Dingxian He, Chong Yan, Jianying Xi, Haoqin Jiang, Yu Shi, Ming Guan, Chongbo Zhao, Jie Song, Sushan Luo   +11 more
wiley   +1 more source

Aβ∗56 is a stable oligomer that impairs memory function in mice

iScience
Summary: Amyloid-β (Aβ) oligomers consist of fibrillar and non-fibrillar soluble assemblies of the Aβ peptide. Aβ∗56 is a non-fibrillar Aβ assembly that is linked to memory deficits. Previous studies did not decipher specific forms of Aβ present in Aβ∗56.
Peng Liu, Ian P. Lapcinski, Chris J.W. Hlynialuk, Elizabeth L. Steuer, Thomas J. Loude, Jr., Samantha L. Shapiro, Lisa J. Kemper, Karen H. Ashe   +7 more
doaj   +1 more source