Results 61 to 70 of about 2,250 (151)

RT-QuIC: a new test for sporadic CJD [PDF]

Practical Neurology, 2018
The diagnosis of sporadic Creutzfeldt-Jakob disease (CJD) can be difficult, but the real-time quaking-induced conversion (RT-QuIC) assays have made a considerable impact on its clinical diagnosis. This technique exploits the ability of the misfolded pathological form of prion protein (PrPSc) found in cerebrospinal fluid (CSF) to induce conversion of ...
openaire   +3 more sources

Evidence for different seeding activities of misfolded tau in classical and rapidly progressive Alzheimer's disease

Brain Pathology, Volume 36, Issue 3, May 2026.
The study analyzed the seeding activity of misfolded tau protein in Alzheimer's disease and rapidly progressive Alzheimer's disease patients and provides evidence for the existence of different tau assemblies supported by differences in cellular toxicity and morphology of thioflavin T‐positive real‐time quaking‐induced conversion products.
Matthias Schmitz, Katrin Thüne, Anna‐Lisa Fischer, Peter Hermann, Maria Cramm, Leonie Sheila Kadel, Wiebke Möbius, Jakob Matschke, Tayyaba Saleem, Neelam Younas, Saima Zafar, Hermann Altmeppen, Markus Glatzel, Inga Zerr   +13 more
wiley   +1 more source

Seed Amplification Assays for Parkinson's Disease: A Review of α‐Synuclein Assays in Body Fluids and Tissues

Journal of Neurochemistry, Volume 170, Issue 5, May 2026.
Background: Parkinson's disease (PD) diagnosis is hindered by late motor symptom onset and low specificity of clinical assessments. This systematic review and meta‐analysis evaluates α‐synuclein seed amplification assays (SAAs) for PD and related synucleinopathies. Main Results: SAAs, including real‐time quaking‐induced conversion (RT‐QuIC) and protein
Weijie Kong, Katsuya Satoh, Mika Inada Shimamura, Tetsuya Maeda, Kenta Takahashi, Masanori Kurihara, Atsushi Iwata   +6 more
wiley   +1 more source

Variably Protease‐Sensitive Prionopathy: Two New Cases With Motor Neuron‐Dementia Syndrome

Annals of Clinical and Translational Neurology, Volume 13, Issue 4, Page 827-833, April 2026.
ABSTRACT We describe two patients with variably protease‐sensitive prionopathy (VPSPr) who developed progressive upper motor neuron symptoms, insomnia, behavioral and cognitive decline, compatible with primary lateral sclerosis associated with frontotemporal dementia (FTD).
María Elena Erro, María Victoria Zelaya, Hasier Eraña, Javier Sánchez Ruiz de Gordoa, Fermín García‐Amigot, Anika Simonovska‐Serra, María Cristina Caballero, Isidre Ferrer, Ellen Gelpi, Ivonne Jericó, Joaquín Castilla   +10 more
wiley   +1 more source

Tracking tau and cellular responses in human iPSC‐microglia: from uptake to seedable secretion, including in extracellular vesicles

Alzheimer's &Dementia, Volume 22, Issue 4, April 2026.
Abstract INTRODUCTION Microglia have been implicated in the templated spread of tau aggregates in tauopathies through mouse studies. However, it is unclear whether these findings translate to human disease. METHODS We challenged human induced pluripotent stem cell (iPSC)‐derived microglia‐like‐cells (iMGL) with monomeric and fibrillar recombinant tau ...
Maria Kreger Karabova, Anna del Ser‐Badia, Anne Hedegaard, Sam J. Washer, Zeynep Baykam, Darragh P. O'Brien, Iolanda Vendrell, Svenja S. Hester, Roman Fischer, Errin Johnson, Charlotte E. Melia, Teige R. S. Matthews‐Palmer, Rishi Matadeen, Alessia Santambrogio, Michael A. Metrick II, Michele Vendruscolo, Sophie Keeling, Kimberly Ai Xian Cheam, William A. McEwan, Kenneth S. Kosik, Theresa A. Day, William S. James, Sally A. Cowley   +22 more
wiley   +1 more source

Quaking-induced conversion of prion protein on a thermal mixer accelerates detection in brains infected with transmissible spongiform encephalopathy agents.

PLoS ONE, 2019
Detection of misfolded prion protein, PrPTSE, in biological samples is important to develop antemortem tests for transmissible spongiform encephalopathies (TSEs).
Nadine Kaelber, Cyrus Bett, David M Asher, Luisa Gregori   +3 more
doaj   +1 more source

The Phenotypic Spectrum of Sporadic Creutzfeldt‐Jakob Disease Cortical Subtype

Annals of Neurology, Volume 99, Issue 4, Page 883-896, April 2026.
Objective The objective of this study was to characterize the phenotypic spectrum of the rare sporadic Creutzfeldt‐Jakob disease cortical subtype (sCJDMM/MV2C) in a large multicentric autopsy cohort. Methods We evaluated clinical histories, biofluid markers, brain diffusion‐weighted (DW)‐magnetic resonance imaging (MRI), and electroencephalogram (EEG ...
Simone Baiardi, Claudia Marina Vargiu, Brian S. Appleby, Marcelo Barria, Giuseppe Mario Bentivenga, Ignazio Calì, Benedetta Carlà, Mark Cohen, Armin Giese, Jochen Herms, Aino‐Minerva Kortelainen, Anna Ladogana, Angela Mammana, Diane Ritchie, Otto Windl, Sabina Capellari, Piero Parchi   +16 more
wiley   +1 more source

The Brain‐Gut Axis in Parkinson's Disease Pathology

Comprehensive Physiology, Volume 16, Issue 2, April 2026.
Exposure to environmental toxins induces gut dysbiosis, increases intestinal epithelial barrier permeability, immune activation, and oxidative stress, promoting α‐syn misfolding and propagation. Brainstem DMV neurons exhibit α‐syn pathology, dysregulating neuronal excitability and vagal control of GI functions.
Kudret Selin Ozkaya, Kirsteen N. Browning   +1 more
wiley   +1 more source

In vitro, cellular and in vivo studies of amyloid oligomers structure and toxicity: Challenges and advances

Protein Science, Volume 35, Issue 4, April 2026.
Abstract Oligomeric assemblies of amyloidogenic proteins, such as Aβ, tau, α‐synuclein, amylin, transthyretin, and TDP‐43, are increasingly recognized as key drivers of cellular dysfunction across a range of neurodegenerative and systemic disorders.
Magdalena I. Ivanova, Carmelo La Rosa, Ayyalusamy Ramamoorthy   +2 more
wiley   +1 more source

A Novel 3D Semi‐Automated Full Quantification Technique for Detection of Intraneural Phospho‐α‐Synuclein in Skin Biopsies

European Journal of Neurology, Volume 33, Issue 4, April 2026.
A novel semi‐automated 3D immunofluorescence technique enables full volumetric quantification of intraneural phospho‐α‐synuclein load in skin biopsies. It refines conventional visually based signal assessment through a more objective, computer‐assisted procedure and provides burden‐dependent test results important for differential diagnostics.
Sophia Lonczewski, Verian Bader, Louisa Ortmann, Louisa Basner, Markus Stücker, Ralf Gold, Raphael Scherbaum, Eun Hae Kwon, Konstanze F. Winklhofer, Lars Tönges   +9 more
wiley   +1 more source