Publications de Tristan Bolmont

Association of brain amyloidosis with pro-inflammatory gut bacterial taxa and peripheral inflammation markers in cognitively impaired elderly

The pathway leading from amyloid-b deposition to cognitive impairment is believed to be a cornerstone of the pathogenesis of Alzheimer's disease (AD). However, what drives amyloid buildup in sporadic nongenetic cases of AD is still unknown. AD brains featu ...

Elsevier Science Inc2017

Reduction of Abeta amyloid pathology in APPPS1 transgenic mice in the absence of gut microbiota

Theo Lasser, Tristan Bolmont, Nicolas Jean Marc Antoine Duthilleul, Taoufiq Harach

Alzheimer’s disease is the most common form of dementia in the western world, however there is no cure available for this devastating neurodegenerative disorder. Despite clinical and experimental evidence implicating the intestinal microbiota in a number o ...

Nature Research2017

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, Nicolas Jean Marc Antoine Duthilleul, Taoufiq Harach, Fabien Louis Claude Robert Jammes, 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

Statistical parametric mapping of stimuli evoked changes in total blood flow velocity in the mouse cortex obtained with extended-focus optical coherence microscopy

Theo Lasser, Paul James Marchand, Tristan Bolmont, David Nguyen, Vincent Khashayar Shamaei, Arno Pino Bouwens, Daniel Pawel Szlag, Jérôme Extermann

Functional magnetic resonance (fMRI) imaging is the current gold-standard in neuroimaging. fMRI exploits local changes in blood oxygenation to map neuronal activity over the entire brain. However, its spatial resolution is currently limited to a few hundre ...

Optical Soc Amer2017

Gastro-intestinal biomarkers for diagnosis and therapies of proteinopathies

Theo Lasser, Tristan Bolmont, Taoufiq Harach

Pharmaceutical composition for the treatment of proteinopathies comprising products which are able to stimulate growth or inhibition of at least one of Odoribacter, Oscillospira, Dehalobacterium, Alistipes, Parabacteroides, Lactobacillus and Sutterella, Fi ...

2016

Quantitative cerebral blood flow imaging with extended-focus optical coherence microscopy

Theo Lasser, Corinne Berclaz, Tristan Bolmont, Arno Pino Bouwens, Daniel Pawel Szlag

Quantitative three-dimensional blood flow imaging is a valuable technique to investigate the physiology of the brain. Two-photon microscopy (2PM) allows quantification of the local blood flow velocity with micrometric resolution by performing repeated line ...

Optical Society of America2014

Use of waste products for detecting amyloidogenic proteinaceous material in living mammals

Theo Lasser, Patrick Fraering, Tristan Bolmont, Taoufiq Harach

Method for detecting amyloidogenic proteinaceous material induced by a proteopathy, for instance Alzheimer's disease, characterized by the fact that said amyloidogenic proteinaceous material is detected in a mammal waste product, such as feces. ...

2013

Quantitative lateral and axial flow imaging with optical coherence microscopy and tomography

Theo Lasser, Tristan Bolmont, Arno Pino Bouwens, Daniel Pawel Szlag

Optical coherence tomography (OCT) and optical coherence microscopy (OCM) allow the acquisition of quantitative three-dimensional axial flow by estimating the Doppler shift caused by moving scatterers. Measuring the velocity of red blood cells is currently ...

Optical Society of America2013

Therapeutic antibodies targeting app-c99

Patrick Fraering, Lorène Aeschbach, Jemila Houacine, Tristan Bolmont

The present invention relates to an isolated and/or purified antibody, antibody fragment or derivative thereof able to block the gamma-secretase-dependent processing of the amyloid precursor protein (APP) and to pharmaceutical compositions containing said ...

2012

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

Patrick Fraering, Lorène Aeschbach, Jemila Houacine, Tristan Bolmont

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

Label-free imaging of cerebral β-amyloidosis with extended-focus optical coherence microscopy

Theo Lasser, Martin Villiger, Corinne Berclaz, Christophe Pache, Patrick Fraering, Tristan Bolmont, Mitko Dimitrov, Arno Pino Bouwens

We demonstrate label-free imaging of cerebral β-amyloidosis ex vivo and in a living mouse model of Alzheimer's disease using extended focus Fourier domain optical coherence microscopy (xfOCM). xfOCM provides 3D, high-resolution images of individual β-amylo ...

Society for Neuroscience2012

Formation and maintenance of Alzheimer's disease beta-amyloid plaques in the absence of microglia

Tristan Bolmont

In Alzheimer's disease, microglia cluster around beta-amyloid deposits, suggesting that these cells are important for amyloid plaque formation, maintenance and/or clearance. We crossed two distinct APP transgenic mouse strains with CD11b-HSVTK mice, in whi ...

Nature Publishing Group2009

Imaging the glioma tropism of hematopoietic progenitor cells by two photon laser scanning microscopy and PET

Tristan Bolmont

2009

Transmission and spreading of tauopathy in transgenic mouse brain

Tristan Bolmont

Hyperphosphorylated tau makes up the filamentous intracellular inclusions of several neurodegenerative diseases, including Alzheimer's disease(1). In the disease process, neuronal tau inclusions first appear in the transentorhinal cortex from where they se ...

Nature Publishing Group2009