Research subject

Our goal is to understand molecular and cellular mechanisms responsible for motor and non-motor symptoms in Parkinson’s disease and atypical parkinsonism as well as the disturbed response to L-dopa. Our goal is thus to identify novel therapeutic targets on the ground of pathophysiological studies in experimental models (ranging from cell culture to non-human primate) as well as in man.

The cell death mechanisms and the pathological response to dopamine replacement therapies in parkinsonian syndromes are at the center of our research work. I close connection with the University Hospital of Bordeaux, we develop a translational research in the field of neurodegenerative disorders, oriented towards disease management and medical applications.

The research activities of the team evolve around the following axes :

  • Mechanisms of cell death in parkinsonian syndromes

Parkinson’s disease is characterized by a progressive accumulation and propagation of a-synuclein likely responsible for their subsequent death. Our objective is to understand these mechanisms for then proposing adapted therapeutic approaches.

  • Decrypting brain pathophysiology using innovative optical nanoprobes

Understanding the role of the extracellular space (ECS) in modulating neuronal communication represents a knowledge frontier in current brain research. We aim to decrypt the intimate interplay between extracellular space and receptors in shaping neuronal network (dys)function. To reach our goal we use innovative multidisciplinary approaches based on new optical nanoimaging reporters and tailored methodologies for manipulating brain functions in state-of-the-art Alzheimer’s disease and Parkinson’s disease models.

  • Pathophysiology of L-dopa-induced dyskinesia

Our 15 years of work now culminate with a series of clinical trials testing the efficacy of pharmacological and non-pharmacological approaches upon dyskinesia severity.

  • Purinergic signalling in the central nervous system

Our overall goal is to better understand the regulation and function of ATP signaling in the central nervous system. We will determine the spatiotemporal profile of ATP actions as well as the profile of expression of purine receptor during both neurogenesis and in pathological states.

Research axes

  • Modelling prion-like dissemination of synucleinopathies and tauopathies in nervous system in Parkinsonian syndromes and dementias.
  • Study of targeting autophagy as a potential cure of Parkinson’s disease.
  • Study of key mechanisms contributing to α-synuclein accumulation to counteract Parkinson’s disease and Multiple System Atrophy progression.
  • Improvement of transgenesis approaches in neurodegenerative diseases modelling.
  • Study of the role of extracellular space in neuronal communication.

 

Complete bibliography >>>

Latest publications

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Criteria : Author : "Bezard", Laboratoire(Affiliation) : "UMR5293", Publication type : "('ART')"
Number of occurrences founded : 196.

titre
Acidic nanoparticles protect against α‐synuclein‐induced neurodegeneration through the restoration of lysosomal function
auteur
Marie‐laure Arotcarena, Federico Soria, Anthony Cunha, Evelyne Doudnikoff, Geoffrey Prévot, Jonathan Daniel, Mireille Blanchard‐desce, Philippe Barthélémy, Erwan Bezard, Sylvie Crauste‐manciet, Benjamin Dehay
article
Aging Cell, Wiley Open Access, 2022, pp.e13584. ⟨10.1111/acel.13584⟩
identifiant
inserm-03617988
titre
Brain injections of glial cytoplasmic inclusions induce a multiple system atrophy-like pathology
auteur
Margaux Teil, Sandra Dovero, Mathieu Bourdenx, Marie-Laure Arotcarena, Sandrine Camus, Gregory Porras, Marie-Laure Thiolat, Ines Trigo-Damas, Celine Perier, Cristina Estrada, Nuria Garcia-Carrillo, Michele Morari, Wassilios Meissner, María Trinidad Herrero, Miquel Vila, Jose Obeso, Erwan Bezard, Benjamin Dehay
article
Brain - A Journal of Neurology , Oxford University Press (OUP), 2022, Online ahead of print. ⟨10.1093/brain/awab374⟩
identifiant
inserm-03609490
titre
Neurons with Cat’s Eyes: A Synthetic Strain of α-Synuclein Fibrils Seeding Neuronal Intranuclear Inclusions
auteur
Francesca de Giorgi, Muhammed Bilal Abdul-Shukkoor, Marianna Kashyrina, Leslie-Ann Largitte, Francesco de Nuccio, Brice Kauffmann, Alons Lends, Florent Laferrière, Sébastien Bonhommeau, Dario Domenico Lofrumento, Luc Bousset, Erwan Bezard, Thierry Buffeteau, Antoine Loquet, Francois Ichas
article
Biomolecules, MDPI, 2022, 12 (3), pp.436. ⟨10.3390/biom12030436⟩
identifiant
hal-03628777
titre
Aggregation and spread of synuclein in Parkinson's disease
auteur
Erwan Bezard, Benjamin Dehay
article
médecine/sciences, EDP Sciences, 2022, 38 (1), pp.45-51. ⟨10.1051/medsci/2021241⟩
identifiant
inserm-03540416
titre
Motor and non-motor circuit disturbances in early Parkinson disease: which happens first?
auteur
Javier Blesa, Guglielmo Foffani, Benjamin Dehay, Erwan Bezard, Jose Obeso
article
Nature Reviews Neuroscience, Nature Publishing Group, 2021, Online ahead of print. ⟨10.1038/s41583-021-00542-9⟩
identifiant
inserm-03483216