3 research outputs found
A viral vector model for circuit-specific synucleinopathy
In Parkinson's disease (PD), pathomechanisms such as aberrant network dysfunctions can be elucidated by conducting multiscale explorations in animal models. However, the lack of specificity in the existing models limits a restricted targeting of individual network elements and characterization of PD as a âcircuitopathyâ. We therefore developed a cell-type specific viral vector (AAV2/9-CreON-A53T-αSyn) mouse model that allows to induce synucleinopathy within individual circuit elements in vivo. When specifically targeted to dopaminergic (DA) neurons of the substantia nigra pars compacta (SNc), our approach recapitulates the main hallmarks of the disease, namely Lewy-body-like aggregation, progressive cellular and nigrostriatal projections loss, together with locomotor impairment. Our strategy is supported by new state-of-the-art analytical approaches for cell quantification and behavior characterization. Altogether, we provide a novel model of synucleinopathy, which offers new opportunities to study the contribution of individual network elements to disease pathomechanisms.Fil: Lantheaume, Alexia. UniversitĂ€t WĂŒrzburg; AlemaniaFil: Schöneberg, Nina. UniversitĂ€t WĂŒrzburg; AlemaniaFil: Rodriguez Rozada, Silvia. UniversitĂ€t WĂŒrzburg; AlemaniaFil: Doll, Dennis. UniversitĂ€t WĂŒrzburg; AlemaniaFil: Schellenberger, Michael. UniversitĂ€t WĂŒrzburg; AlemaniaFil: Kobel, Konstantin. UniversitĂ€t WĂŒrzburg; AlemaniaFil: Katzenberge, Kilian. UniversitĂ€t WĂŒrzburg; AlemaniaFil: Signoret Genest, JĂ©rĂ©my. UniversitĂ€t WĂŒrzburg; AlemaniaFil: Tissone, Angela Isabel. ComisiĂłn Nacional de EnergĂa AtĂłmica. Gerencia del Ărea de EnergĂa Nuclear. Instituto Balseiro. Archivo HistĂłrico del Centro AtĂłmico Bariloche e Instituto Balseiro | Universidad Nacional de Cuyo. Instituto Balseiro. Archivo HistĂłrico del Centro AtĂłmico Bariloche e Instituto Balseiro; ArgentinaFil: Ip, Chi Wang. UniversitĂ€t WĂŒrzburg; AlemaniaFil: Esposito, Maria Soledad. ComisiĂłn Nacional de EnergĂa AtĂłmica. Gerencia del Ărea de EnergĂa Nuclear. Instituto Balseiro. Archivo HistĂłrico del Centro AtĂłmico Bariloche e Instituto Balseiro | Universidad Nacional de Cuyo. Instituto Balseiro. Archivo HistĂłrico del Centro AtĂłmico Bariloche e Instituto Balseiro; ArgentinaFil: Tovote, Philip. UniversitĂ€t WĂŒrzburg; Alemani
Le récit du commun
Cet ouvrage collectif prĂ©sente les rĂ©sultats dâune enquĂȘte internationale menĂ©e auprĂšs dâenviron 7 000 Ă©lĂšves ĂągĂ©s de 11 Ă 19 ans, Ă qui il a Ă©tĂ© demandĂ© de raconter lâhistoire nationale. Des Ă©lĂšves français, suisses, catalans, allemands ont rĂ©pondu Ă un questionnaire et racontĂ© librement « leur » histoire nationale. Contre les idĂ©es reçues dâun manque de connaissances historiques et de lâabsence de tout rĂ©cit commun, lâenquĂȘte dĂ©voile des formes de narration, des organisateurs du rĂ©cit et des contenus partagĂ©s, une vĂ©ritable trame commune. Lâanalyse de ces formes et contenus prĂ©cise leurs points forts, mais aussi les absences ou les spĂ©cificitĂ©s nationales, et montre comment les savoirs scolaires coexistent avec dâautres sources de connaissances. Sont Ă©tudiĂ©es en particulier les places respectives et les fonctions du politique, de la religion, de la guerre, dans ces rĂ©cits qui tĂ©moignent dâun imaginaire national. Un effet « territorial » est enfin mis en valeur, Ă la fois moins important que prĂ©vu en France et significatif Ă lâĂ©chelle des pays. Sensibles au contexte, ces rĂ©cits sont la manifestation juvĂ©nile dâune conscience historique en formation, qui sâexprime selon des formes inĂ©dites