266 research outputs found
Les fonds et collections de lâĂ©chelon de Rochefort
AprĂšs la mutualisation des services historiques des armĂ©es au dĂ©but de lâannĂ©e 2005, le dĂ©partement marine du Service historique de la DĂ©fense (SHD) a conservĂ© sa structure originale dâun Ă©chelon central situĂ© au chĂąteau de Vincennes et dâimplantations littorales situĂ©es dans les cinq anciens ports de guerre français. Celle de Rochefort, qui correspond Ă lâespace atlantique compris entre la VendĂ©e et la frontiĂšre espagnole, sâinscrit aussi dans la politique active de conservation et de valori..
Le DĂ©pĂŽt des cartes et plans de la marine et la collection des soixante et onze recueils du Service hydrographique
Comme pour beaucoup de fonds aujourdâhui conservĂ©s par le Service historique de la DĂ©fense, câest au rĂšgne de Louis XIV que remonte lâorigine de la collection des soixante et onze recueils du Service hydrographique de la marine, le plus riche fonds cartographique du dĂ©partement Marine. Lâadministration centrale de la marine montra en effet Ă la fin du XVIIe siĂšcle le mĂȘme souci pour la conservation de ses archives que quelques annĂ©es plus tĂŽt celle de la Guerre, en crĂ©ant en 1699 son premier ..
Imagerie des récepteurs de neuropeptides pour le ciblage tumoral
Neuropeptide receptors can be highly expressed on the cell surface of tumor cells,paving the way to their visualization with Positron Emission Tomography (PET) using analoguesradiolabeled with 68Ga, 64Cu or 18F, but also to select patients who can benefit fromradiopharmaceutical therapy using similar analogues radiolabeled with 177Lu or 90Y. An example hasbeen the development of somatostatin radio-analogues for imaging (68Ga-DOTATOC) and therapy(177Lu-DOTATATE) of neuroendocrine tumors (NET). This concept has gained insight since thediscovery of other neuropeptides and their receptors (over)expressed on diverse tumors. This PhD hasbeen conducted according to several axis, the first being the establishment of a 68Ga-radiolabelingplatform (among the first in France) to introduce somatostatin receptor PET imaging of NET inBordeaux (clinical trial GALTEP using 68Ga-DOTATOC) but also other innovative molecules (68Ga-PSMA for prostate cancer imaging). Furthermore, to consider other applications of somatostatinreceptors we investigated their expression in Hodgkin's lymphomas. We then mainly aimed atinvestigating possibilities offered by two other families of neuropeptide receptors: bombesin receptors(GRP-R and NMB-R) and neurotensin receptors (NTR1). For the bombesin family, we have wellcharacterized GRP-R expression in breast cancer and developed a novel class of radiopeptide forbombesin receptors targeting. Finally, we studied NTR1 expression in various tumors (notably prostatecancer) to provide molecular basis necessary for the development of neurotensin analogues.Des rĂ©cepteurs de neuropeptides peuvent ĂȘtre fortement exprimĂ©s Ă la surface descellules tumorales offrant ainsi lâopportunitĂ© de les visualiser en imagerie par Tomographie d'Emissionde Positons (TEP) grĂące Ă des analogues radiomarquĂ©s au 68Ga, 64Cu ou au 18F, mais Ă©galement desĂ©lectionner des patients rĂ©pondeurs Ă une radiothĂ©rapie mĂ©tabolique Ă l'aide de ces mĂȘmes analogues,radiomarquĂ©s au 177Lu ou 90Y. Un exemple phare a Ă©tĂ© le dĂ©veloppement dâanalogues radiomarquĂ©s dela somatostatine pour l'imagerie (68Ga-DOTATOC) et le traitement (177Lu-DOTATATE) des tumeursneuro-endocrines (TNE). Cette voie diagnostique et thĂ©rapeutique sâest rĂ©cemment amplifiĂ©e aveclâidentification d'autres neuropeptides et leurs rĂ©cepteurs (sur)exprimĂ©s par les cellules tumorales. Cetravail de ThĂšse s'est donc dĂ©roulĂ© selon plusieurs thĂ©matiques dont la premiĂšre a Ă©tĂ© la mise en placed'une plate-forme de radiomarquage au 68Ga (une des premiĂšres en France) pour introduire l'imageriedes rĂ©cepteurs somatostatine dans les TNE Ă Bordeaux (essai clinique GALTEP utilisant le 68Ga-DOTATOC) ou d'autres molĂ©cules innovantes (68Ga-PSMA dans le cancer de la prostate). Afindâenvisager d'autres applications des rĂ©cepteurs de la somatostatine nous avons recherchĂ© leurexpression dans des lymphomes de Hodgkin. Enfin, nous nous sommes concentrĂ©s sur ledĂ©veloppement de deux autres familles de neuropeptides; les rĂ©cepteurs de la bombĂ©sine (GRP-R etNMB-R) et de la neurotensine (NTR1). Nous avons finement caractĂ©risĂ© l'expression du GRP-R dansle cancer du sein et dĂ©veloppĂ© une nouvelle classe de radiopeptides pour le ciblage des rĂ©cepteurs de labombĂ©sine. Enfin, nous avons Ă©tudiĂ© NTR1 dans diverses tumeurs pour fournir le rationnel nĂ©cessaireau dĂ©veloppement d'analogues de la neurotensine
Jacques-Olivier BOUDON, Les naufragés de la Méduse
Le naufrage de la MĂ©duse a suscitĂ© depuis plus de deux cents ans une abondante littĂ©rature, quâil sâagisse de lâĂ©dition de tĂ©moignages ou dâouvrages relatant cette histoire hors norme ou sâattachant Ă tel ou tel de ses aspects. Cette production sâĂ©tait un peu amoindrie au cours de ces derniĂšres annĂ©es, mais la perspective du bicentenaire des Ă©vĂ©nements, dâailleurs inscrit au recueil des « CommĂ©morations nationales » de lâannĂ©e 2016, a remis la frĂ©gate et ses passagers sur le devant de la scĂšn..
MĂ©diation et valorisation des patrimoines liĂ©s Ă lâesclavage. Chairs noires et pierres blanches, une annĂ©e de manifestations en Charente-Maritime
Ă lâinstigation de la Ville de La Rochelle, plusieurs Ă©tablissements culturels et patrimoniaux de La Rochelle et de Rochefort, regroupĂ©s sous le label de lâARCADD, ont proposĂ© dans le courant de lâannĂ©e 2010 une sĂ©rie de manifestations consacrĂ©es Ă lâhistoire de la traite nĂ©griĂšre et de lâesclavage. ConstituĂ© dâune table ronde, dâexpositions, de confĂ©rences, de films documentaires et dâexpressions diverses du spectacle vivant, ce programme, basĂ© sur les derniĂšres avancĂ©es de la recherche, sâest prolongĂ© en 2011, en soulignant le dynamisme de la rĂ©gion dans ce domaine de la recherche, trente ans aprĂšs les pionniers en la matiĂšre.Asked by the City of La Rochelle, some educational and cultural institutions of La Rochelle and Rochefort, gathered in the association ARCADD, have presented in 2010 a programme about history of slavery and his trade, with exhibitions, lectures and documentaries built on latest research. It went on in 2011 as a part of the general trend of development of research on these themes, thirty years after its beginning
MetaNetX/MNXref - reconciliation of metabolites and biochemical reactions to bring together genome-scale metabolic networks.
MetaNetX is a repository of genome-scale metabolic networks (GSMNs) and biochemical pathways from a number of major resources imported into a common namespace of chemical compounds, reactions, cellular compartments-namely MNXref-and proteins. The MetaNetX.org website (http://www.metanetx.org/) provides access to these integrated data as well as a variety of tools that allow users to import their own GSMNs, map them to the MNXref reconciliation, and manipulate, compare, analyze, simulate (using flux balance analysis) and export the resulting GSMNs. MNXref and MetaNetX are regularly updated and freely available
UniPathway: a resource for the exploration and annotation of metabolic pathways
UniPathway (http://www.unipathway.org) is a fully manually curated resource for the representation and annotation of metabolic pathways. UniPathway provides explicit representations of enzyme-catalyzed and spontaneous chemical reactions, as well as a hierarchical representation of metabolic pathways. This hierarchy uses linear subpathways as the basic building block for the assembly of larger and more complex pathways, including species-specific pathway variants. All of the pathway data in UniPathway has been extensively cross-linked to existing pathway resources such as KEGG and MetaCyc, as well as sequence resources such as the UniProt KnowledgeBase (UniProtKB), for which UniPathway provides a controlled vocabulary for pathway annotation. We introduce here the basic concepts underlying the UniPathway resource, with the aim of allowing users to fully exploit the information provided by UniPathwa
Rheaâa manually curated resource of biochemical reactions
Rhea (http://www.ebi.ac.uk/rhea) is a comprehensive resource of expert-curated biochemical reactions. Rhea provides a non-redundant set of chemical transformations for use in a broad spectrum of applications, including metabolic network reconstruction and pathway inference. Rhea includes enzyme-catalyzed reactions (covering the IUBMB Enzyme Nomenclature list), transport reactions and spontaneously occurring reactions. Rhea reactions are described using chemical species from the Chemical Entities of Biological Interest ontology (ChEBI) and are stoichiometrically balanced for mass and charge. They are extensively manually curated with links to source literature and other public resources on metabolism including enzyme and pathway databases. This cross-referencing facilitates the mapping and reconciliation of common reactions and compounds between distinct resources, which is a common first step in the reconstruction of genome scale metabolic networks and models
Identification, characterization, and localization of the dopamine D3 receptor in rat brain using 7-[3H]hydroxy-N,N-di-n-propyl-2-aminotetralin.
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