Publications associées à Pittsburgh compound B

Deconstructing and Reconstructing the Complexity of Tau pathology

This thesis consists of four Chapters unified by a singular theme â how do we develop disease models that faithfully reproduce the pathology seen in patients suffering from neurodegenerative disorders associated with the Tau protein, such as Alzheimerâ ...

EPFL2023

Pharmacological characterization of mutant huntingtin aggregate-directed PET imaging tracer candidates

Hilal Lashuel, Anass Chiki

Huntington's disease (HD) is caused by a CAG trinucleotide repeat expansion in the first exon of the huntingtin (HTT) gene coding for the huntingtin (HTT) protein. The misfolding and consequential aggregation of CAG-expanded mutant HTT (mHTT) underpin HD p ...

Nature Portfolio2021

Anti-Aβ antibodies bound to neuritic plaques enhance microglia activity and mitigate tau pathology

Bernard Schneider, Philippe Colin, Vanessa Laversenne

The brain pathology of Alzheimer’s disease (AD) is characterized by the misfolding and aggregation of both the amyloid beta (Aβ) peptide and hyperphosphorylated forms of the tau protein. Initial Aβ deposition is considered to trigger a sequence of deleteri ...

2020

Gold nanoparticles as a new tool in amyloid studies

Urszula Beata Cendrowska

The misfolding and self-assembly of proteins into fibrils is a hallmark of several neurodegenerative and systemic diseases. These disease-associated proteins have the propensity to form fibrils with a cross-Î² sheet structure, called amyloids. Amyloids can ...

EPFL2020

Toward a Full-Flexible and Fast-Prototyping TOF-PET Block Detector Based on TDC-on-FPGA

Edoardo Charbon, Esteban Venialgo Araujo

Typically, a time-of-flight (TOF) positron emission tomography (PET) block detector is built using application-specific integrated circuits (ASICs), since they integrate a high number of channels at a reasonable power consumption and into a small area. How ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2019

Bioluminescent-based imaging and quantification of glucose uptake in vivo

Riccardo Sinisi, Elena Goun, Pavlo Khodakivskyi, Arkadiy Bazhin, Aleksey Yevtodiyenko, Tamara Maric, Georgy Mikhaylov

Glucose is a major source of energy for most living organisms, and its aberrant uptake is linked to many pathological conditions. However, our understanding of disease-associated glucose flux is limited owing to the lack of robust tools. To date, positron- ...

NATURE PUBLISHING GROUP2019

The metalloprotease ADAMTS4 generates N-truncated A4-x species and marks oligodendrocytes as a source of amyloidogenic peptides in Alzheimer's disease

Patrick Fraering, Mitko Dimitrov, Hermeto Gerber, Sandra Lehmann

Brain accumulation and aggregation of amyloid- (A) peptides is a critical step in the pathogenesis of Alzheimer's disease (AD). Full-length A peptides (mainly A1-40 and A1-42) are produced through sequential proteolytic cleavage of the amyloid precursor pr ...

SPRINGER2019

Application of anti-amyloid beta immunization using encapsulated cell technology in mouse models of Alzheimer's disease

Vanessa Laversenne

Alzheimer's disease (AD) is the most common form of dementia in the elderly. AD is characterized by the deposition of two aggregated proteins: Amyloid beta (Aß) and hyperphosphorylated tau. Accumulations of these proteins are thought to be the signature ...

EPFL2019

GABA and glutamate moderate beta-amyloid related functional connectivity in cognitively unimpaired old-aged adults

Dimitri Nestor Alice Van De Ville, Maria Giulia Preti

Background: Effects of beta-amyloid accumulation on neuronal function precede the clinical manifestation of Alzheimer's disease (AD) by years and affect distinct cognitive brain networks. As previous studies suggest a link between beta-amyloid and dysregul ...

2019

Optical projection tomography for whole organ imaging

David Nguyen

In the past twenty years, far-reaching studies of molecular and cellular processes have reached a milestone in their maturation, and the knowledge from these studies was ready to apply at higher organizational levels. At that time, rodent models were long ...

EPFL2019

Towards Ultrasound Everywhere: A Portable 3D Digital Back-End Capable of Zone and Compound Imaging

Jean-Philippe Thiran, Giovanni De Micheli, Federico Angiolini, Marcel Arditi, Aya Mohamed Naguib Ahmed Ibrahim, Shuping Zhang

Ultrasound imaging is a ubiquitous diagnostic technique, but does not fit the requirements of the telemedicine approach, because it relies on the real-time manipulation and image recognition skills of a trained expert, called sonographer. Sonographers are ...

2018

Administrations of human adult ischemia-tolerant mesenchymal stem cells and factors reduce amyloid beta pathology in a mouse model of Alzheimer's disease

Theo Lasser, Tristan Bolmont, Taoufiq Harach, Fabien Louis Claude Robert Jammes, Nicolas Jean Marc Antoine Duthilleul, Valentin Laurent Herbert Zufferey

The impact of human adult ischemia-tolerant mesenchymal stem cells (hMSCs) and factors (stem cell factors) on cerebral amyloid beta (Aβ) pathology was investigated in a mouse model of Alzheimer's disease (AD). To this end, hMSCs were administered intraveno ...

Elsevier2017

The Chemistry of Neurodegeneration: Kinetic Data and Their Implications

Matej Repic

We collected experimental kinetic rate constants for chemical processes responsible for the development and progress of neurodegeneration, focused on the enzymatic and non-enzymatic degradation of amine neurotransmitters and their reactive and neurotoxic m ...

Humana Press Inc2016

A subcutaneous cellular implant for passive immunization against amyloid-beta reduces brain amyloid and tau pathologies

Patrick Aebischer, Bernard Schneider, Vanessa Laversenne, Aurélien Lathuilière, Marco Stampanoni

Passive immunization against toxic misfolded proteins could offer protection against neurodegenerative disease. LathuiliSre et al. report the development of a retrievable device to encapsulate cells secreting recombinant anti-amyloid-beta antibodies. When ...

Oxford Univ Press2016

Detection of Alzheimer’s disease amyloid-beta plaque deposition by deep brain impedance profiling

Philippe Renaud, Patrick Fraering, Sébastien Mosser, Pierre Joris, Amélie Barbara Hildegarde Béduer

OBJECTIVE: Alzheimer disease (AD) is the most common form of neurodegenerative disease in elderly people. Toxic brain amyloid-beta (ASS) aggregates and ensuing cell death are believed to play a central role in the pathogenesis of the disease. In this study ...

Iop Publishing Ltd2015

Structural differences of amyloid-beta fibrils revealed by antibodies from phage display

Hilal Lashuel, Patrick Droste

Background: Beside neurofibrillary tangles, amyloid plaques are the major histological hallmarks of Alzheimer's disease (AD) being composed of aggregated fibrils of beta-amyloid (A beta). During the underlying fibrillogenic pathway, starting from a surplus ...

Biomed Central Ltd2015

New Insights Into Amyloid Formation and Structure by Innovative Atomic Force Microscopy Methods

Francesco Simone Ruggeri

Today, more than 40 million people worldwide are affected by neurodegenerative disorders. Onset of these diseases is associated with insoluble fibrillar protein aggregates, termed amyloids. The molecular origin and the link between amyloid formation and di ...

EPFL2015

A novel encapsulation device for peripheral implantation of antibody-secreting cells : passive immunization against amyloid β

Aurélien Lathuilière

Alzheimer’s disease (AD) is the most prevalent form of dementia in the elderly. As populations are aging in most parts of the world, the number of people with Alzheimer’s disease is expected to dramatically increase. This devastating neurodegenerative diso ...

EPFL2013

Investigation of Biophysical Properties of Biomolecules by Means of Atomic Force Microscopy

Jae Sun Jeong

Biomolecules are the building blocks of living organisms and perform the most important functions in a biological process. The aim of biophysics is to understand the biological functions of biomolecules in terms of their structure: structure and function o ...

EPFL2012

Selective neutralization of APP-C99 with monoclonal antibodies reduces the production of Alzheimer's Aβ peptides

Patrick Fraering, Lorène Aeschbach, Tristan Bolmont, Jemila Houacine

The toxic amyloid-β (Aβ) peptides involved in Alzheimer's disease (AD) are produced after processing of the amyloid precursor protein-C-terminal fragment APP-C99 by γ-secretase. Thus, major therapeutic efforts have been focused on inhibiting the activity o ...

Elsevier Science Inc2012