Marie-Pierre Faure
Montreal Neurological Institute and Hospital
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Marie-Pierre Faure.
Neuroscience | 1995
Marie-Pierre Faure; Dominique Nouel; Alain Beaudet
Previous studies have demonstrated that neurotensin is internalized and retrogradely transported in neurons of the substantia nigra following its intracerebral injection in the neostriatum. The aim of the present study was to compare the intracellular distribution of retrogradely transported material with that observed following internalization of the peptide at the somatodendritic level and to confirm that the internalization was confined to dopamine neurons. To document somatodendritic internalization, slices (350 microns) from the rat ventral midbrain were incubated in vitro with 20 mM fluoresceinylated neurotensin, a fluorescent derivative of neurotensin, and immunostained 5-60 min later for tyrosine hydroxylase. To document retrograde transport, rats were injected with the same compound into the neostriatum and the brains processed for tyrosine hydroxylase immunohistochemistry 4.5 and 8 h later. Confocal laser microscopic examination of superfused slices revealed that fluoresceinylated neurotensin was internalized at the level of the perikarya and processes of neurons in the substantia nigra, ventral tegmental area and interfascicular nucleus. At short time intervals, the label was detected in the form of small, intensely fluorescent particles distributed within the cytoplasm of both perikarya and dendrites. At longer time intervals, these fluorescent particles were larger, less numerous and confined to the perikarya where they eventually clustered against the nucleus. Following intrastriatal injection of fluoresceinylated neurotensin, retrogradely labeled cells were apparent throughout the substantia nigra, pars compacta, as well as in the lateral part of the ventral tegmental area. Here again, the label took the form of small fluorescent particles, comparable in size, shape and distribution to those detected following superfusion of midbrain slices. In both labeling conditions, fluoresceinylated neurotensin was almost exclusively confined to tyrosine hydroxylase-immunoreactive cells. These results indicate that neurotensin is internalized throughout the terminal and dendritic arborization of mesostriatal dopamine cells and that the internalized peptide is transported centripetally from both locations to the soma of the cells. The clustering of fluorescent particles in the perinuclear region of the cells further suggests that the internalized process may play a role in the long term transcellular signalling.
The Journal of Neuroscience | 1995
Marie-Pierre Faure; A Alonso; Dominique Nouel; G Gaudriault; M Dennis; Jean-Pierre Vincent; Alain Beaudet
The Journal of Neuroscience | 1994
Angel Alonso; Marie-Pierre Faure; Alain Beaudet
The Journal of Neuroscience | 1997
Dominique Nouel; Marie-Pierre Faure; Jacques-André St. Pierre; Richard Alonso; Rémi Quirion; Alain Beaudet
Biochemical Pharmacology | 1994
Alain Beaudet; Jean Mazella; Dominique Nouel; Joëlle Chabry; Marie-Noëlle Castel; Pierre M. Laduron; Patrick Kitabgi; Marie-Pierre Faure
Biochemical Journal | 1995
Hélène Boudin; A Grauz-Guyon; Marie-Pierre Faure; Patricia Forgez; Anne-Marie Lhiaubet; M Dennis; Alain Beaudet; William Rostène; Didier Pélaprat
Archive | 1996
Alain Beaudet; Marie-Pierre Faure; Pierrette Gaudreau
Synapse | 1995
Marie-Pierre Faure; Catherine Labbé-Jullié; Neil R. Cashman; Patrick Kitabgi; Alain Beaudet
Archive | 1996
Marie-Pierre Faure; Ken Mcdonald; Alain Beaudet
Annals of the New York Academy of Sciences | 1992
Marie-Pierre Faure; Ivan T. Shaw; Pierrette Gaudreau; Neil R. Cashman; Alain Beaudet