Hugo Geerts

ORCID: 0000-0002-9736-1800
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About
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Research Areas
  • Computational Drug Discovery Methods
  • Alzheimer's disease research and treatments
  • Cholinesterase and Neurodegenerative Diseases
  • Neuroscience and Neuropharmacology Research
  • Receptor Mechanisms and Signaling
  • Neurotransmitter Receptor Influence on Behavior
  • Functional Brain Connectivity Studies
  • Cell Image Analysis Techniques
  • Bioinformatics and Genomic Networks
  • Microtubule and mitosis dynamics
  • Chemical synthesis and alkaloids
  • Nicotinic Acetylcholine Receptors Study
  • Neuroscience and Neural Engineering
  • Advanced Fluorescence Microscopy Techniques
  • Treatment of Major Depression
  • Schizophrenia research and treatment
  • Neuroinflammation and Neurodegeneration Mechanisms
  • Force Microscopy Techniques and Applications
  • Mitochondrial Function and Pathology
  • Gene Regulatory Network Analysis
  • Nerve injury and regeneration
  • Parkinson's Disease Mechanisms and Treatments
  • Lipid Membrane Structure and Behavior
  • Memory and Neural Mechanisms
  • Neurological disorders and treatments

Certara (United States)
2020-2025

Predictive Science (United States)
2024-2025

Integra LifeSciences (United States)
2023-2024

In Silico Biosciences (United States)
2012-2021

University of Pennsylvania
2005-2018

Sherwin Williams (United States)
2016

Dialyse Centrum Groningen
2012

Cold Spring Harbor Laboratory
2005

Institute on Aging
2005

Janssen (Belgium)
1992-2002

This paper presents the measurement of colored object reflectance, under different, general assumptions regarding imaging conditions. We exploit Gaussian scale-space paradigm for color images to define a framework robust reflectance from images. Object is derived physical model based on Kubelka-Munk theory colorant layers. Illumination and geometrical invariant properties are model. Invariance discriminative power invariants experimentally investigated, showing be successful in discounting...

10.1109/34.977559 article EN IEEE Transactions on Pattern Analysis and Machine Intelligence 2001-01-01

Protein tau filaments in brain of patients suffering from Alzheimer's disease, frontotemporal dementia, and other tauopathies consist protein that is hyperphosphorylated. The responsible kinases operating vivo neurons still need to be identified. Here we demonstrate glycogen synthase kinase-3β (GSK-3β) an effective kinase for cerebral adult GSK-3β × human tau40 transgenic mice. Phosphorylated migrates slower during electrophoretic separation revealed by phosphorylation-dependent anti-tau...

10.1074/jbc.m006219200 article EN cc-by Journal of Biological Chemistry 2000-12-01

A critical step in automatic microscopy is focusing. This report describes a robust and fast autofocus approach useful for wide range of microscopic modalities preparations.The focus curve measured over the complete focal range, reducing chance that best position determined by dust or optical artifacts. Convolution with derivative Gaussian smoothing function reduces effect noise on curve. The influence mechanical tolerance accounted for.The method shown to be fluorescence, bright-field phase...

10.1002/(sici)1097-0320(20000101)39:1<1::aid-cyto2>3.0.co;2-j article EN Cytometry 2000-01-01

Abstract Transferrin receptors labeled with the B3/25 monoclonal antibody–gold complexes were followed in living A431 cells by using video‐enhanced contrast microscopy. Initially, antibody‐gold bind to which are freely mobile on upper cell surface; they then become trapped at inner margins of peripheral lamellae and internalize. During endocytosis discrete gold‐loaded vesicular elements first appear, then, as fuse, a heterogenous endosomal compartment forms. The endosomes from this begin...

10.1002/cm.970090105 article EN Cell Motility and the Cytoskeleton 1988-01-01

10.2165/11310890-000000000-00000 article EN CNS Drugs 2009-10-23

A recently introduced extension of video-enhanced light microscopy, called Nanovid documents the dynamic reorganization individual cell surface components on living cells. 40-microns colloidal gold probes coupled to different types poly-L-lysine label negative PTK2 Evidence is provided that they bind sialic acid residues glycoproteins, probably through nonspecific electrostatic interactions. The probes, short molecules (4 kD) displayed Brownian motion, with a diffusion coefficient in range...

10.1083/jcb.112.1.111 article EN The Journal of Cell Biology 1991-01-01
Patrizia A. Chiesa Enrica Cavedo Andrea Vergallo Simone Lista Marie‐Claude Potier and 94 more Marie-Odile Habert Marion Dubois Michel Thiebaut de Schotten Harald Hampel Hovagim Bakardjian Habib Benali Hugo Bertín Joel Bonheur Laurie Boukadida Nadia Boukerrou Olivier Colliot Stéphane Epelbaum Geoffroy Gagliardi Rémy Genthon Marion Houot Aurélie Kas Foudil Lamari Marcel Lévy Christiane Metzinger Fanny Mochel Francis Nyasse Catherine Poisson Marie Révillon Antonio Santos Katia Santos Andrade Marine Sole Mohmed Surtee Nadjia Younsi Mohammad Afshar Lisi Flores Aguilar Leyla Akman-Anderson Joaquı́n Arenas Jesús Ávila Claudio Babiloni Filippo Baldacci Richard Batrla Norbert Benda Keith L. Black Arun L.W. Bokde Ubaldo Bonuccelli Karl Broich Francesco Cacciola Filippo Caraci Juan Carlos Martínez‐Castrillo Roberto Ceravolo Jean‐Christophe Corvol A. Claudio Cuello Jeffrey Cummings Herman Depypere Bruno Dubois Andrea Duggento Enzo Emanuele Valentina Escott-Price Howard J. Federoff Maria Teresa Ferretti Massimo Fiandaca Richard Frank Francesco Garaci Hugo Geerts Filippo Sean Giorgi Edward J. Goetzl Manuela Graziani Marion Haberkamp Karl Herholz Félix Hernández Dimitrios Kapogiannis Eric Karran Steven J. Kiddle Seung Hyun Kim Yosef Koronyo Maya Koronyo‐Hamaoui Todd Langevin Stéphane Lehéricy Alejandro Lucía Jean Lorenceau Dalila Mango Mark Mapstone Christian Néri Robert Nisticò Sid E. O’Bryant Giovanni Palermo George Perry Craig Ritchie Símone Rossi Amira Saidi Emiliano Santarnecchi Lon S. Schneider Olaf Sporns Nicola Toschi Steven Verdooner Nicolas Villain Lindsay A. Welikovitch Janet Woodcock Erfan Younesi

Abstract Introduction The longitudinal trajectories of functional brain dynamics and the impact genetic risk factors in individuals at for Alzheimer's disease are poorly understood. Methods In a large‐scale monocentric cohort 224 amyloid stratified disease, default mode network (DMN) resting state connectivity (FC) was investigated between two serial time points across 2 years. Results Widespread DMN FC changes were shown frontal posterior areas, as well right hippocampus. There no...

10.1016/j.jalz.2019.03.006 article EN cc-by-nc-nd Alzheimer s & Dementia 2019-05-18

Mutant human presenilin-1 (PS1) causes an Alzheimer's-related phenotype in the brain of transgenic mice combination with mutant amyloid precursor protein by means increased production peptides (Dewachter, I., Van Dorpe, J., Smeijers, L., Gilis, M., Kuiperi, C., Laenen, Caluwaerts, N., Moechars, D., Checler, F., Vanderstichele, H. & Leuven, F. (2000) <i>J. Neurosci.</i> 20, 6452–6458) that aggravate plaques and cerebrovascular (Van Dewachter, Nuyens, Spittaels, K., van den Haute, Mercken,...

10.1074/jbc.m010977200 article EN cc-by Journal of Biological Chemistry 2001-04-01

Objectives: A QSP model was developed to better understand the systemic response avalglucosidase alfa in patients with Pompe disease, a rare disease caused by deficient lysosomal glycogen degradation. This describes both late-onset (LOPD) and severe infantile-onset (IOPD) phenotypes within single mechanistic framework. To supplement data from Mini-COMET (NCT03019406) study comparing vs. standard-of-care treatment IOPD patients, QSP-based virtual twin analysis performed account for low...

10.70534/ybpq6808 article EN 2025-02-18

10.1007/164_2024_739 article EN Handbook of experimental pharmacology 2025-01-01

Apolipoprotein E &lt;i&gt;(APOE)&lt;/i&gt; has been extensively demonstrated to be a genetic risk factor for Alzheimer’s disease (AD). Associations of &lt;i&gt;APOE&lt;/i&gt; genotype have reported with age at AD onset, rate decline, and responsiveness therapy. This study aimed test these hypotheses in large population patients. was determined from 1,528 Caucasian subjects, diagnosed by NINCDS/ADRDA criteria as probable patients, enrolled four international placebo-controlled clinical trials...

10.1159/000051238 article EN Dementia and Geriatric Cognitive Disorders 2001-01-01

There is increasing evidence that apoptosis in postmitotic neurons associated with a frustrated attempt to reenter the mitotic cycle. Okadaic acid, specific protein phosphatase inhibitor, currently used models of Alzheimer's research increase degree phosphorylation various proteins, such as microtubule-associated tau. acid induces programmed cell death human neuroblastoma lines TR14 and NT2-N, evidenced by fragmentation DNA attenuation this process synthesis inhibitors. In differentiated...

10.1046/j.1471-4159.1998.70031124.x article EN Journal of Neurochemistry 1998-03-01

In Alzheimer's disease and related dementias, human tau protein aggregates into paired helical filaments neurofibrillary tangles. However, such have not yet been demonstrated in transgenic mouse models of the disease. One possible explanations would be that has different properties which prevents it from aggregating. We cloned several murine isoforms, containing three or four repeats combinations inserts, expressed them Escherichia coli show here they can all assembled similar to those...

10.1016/s0014-5793(99)00522-0 article EN FEBS Letters 1999-05-14
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