8 research outputs found

    L'Ă©ducation Ă  la culture informationnelle

    Get PDF
    La publication des actes du colloque international L'Ă©ducation Ă  la culture informationnelle (Lille, octobre 2008 - sous le patronage de l'Unesco) prĂ©sente les regards de chercheurs, de praticiens ou de reprĂ©sentants d'institutions sur cette notion et ouvre de larges perspectives interdisciplinaires. Le nouveau concept de « culture informationnelle » est proposĂ© par la communautĂ© internationale pour mieux apprĂ©hender la complexification actuelle des relations entre l'enseignement, l'Ă©ducation et l'information, liĂ©e au dĂ©veloppement exponentiel des technologies numĂ©riques. Quel rapport entretient l'Ă©ducation Ă  l'information (information literacy) avec l'Ă©ducation aux mĂ©dias (media literacy) et l'Ă©ducation numĂ©rique (digital literacy) ? Le pĂ©rimĂštre de la « culture informationnelle » s'Ă©tend maintenant clairement au-delĂ  du monde de la documentation et des bibliothĂšques. La notion mĂȘme doit ĂȘtre prĂ©cisĂ©e, revue, alors que les pratiques continuent d'Ă©voluer. Une place importante est consacrĂ©e dans l'ouvrage Ă  l'analyse comparĂ©e des approches thĂ©oriques et de plusieurs expĂ©riences menĂ©es dans diffĂ©rents pays

    L’éducation aux mĂ©dias, une Ă©ducation technique ?

    No full text
    Les mĂ©dias sont Ă  la fois synonymes de libertĂ© et d’aliĂ©nation. Ils renvoient Ă  la libertĂ© d’expression qui ne peut se dĂ©ployer que dans des États dĂ©mocratiques et, en mĂȘme temps, ils suscitent sans cesse le soupçon d’une collusion avec le pouvoir politique. Notre rapport aux mĂ©dias est ainsi un rapport double, d’attraction et de rĂ©pulsion. En ce sens, ils apparaissent Ă  la fois comme la meilleure et la pire des choses, nous conduisant Ă  osciller entre l’affirmation des mĂ©dias comme contrepou..

    L'éducation aux médias, une éducation technique ?

    Get PDF
    Our relation to the medias and our relation to technology and its developments arouse the same reactions of attraction and repulsion either on the one hand the medias and technology as synonyms of freedom or on the other hand as synonyms of alienation. This parallel movement that accompanies our criticism should lead us to ask ourselves about the place and the form that may take a media education when the question of training to master the technical tools appears. It is then easy to show that training only in technical mastery does not answer to the requirements of a media education whose goal is to train citizens and the development of critical thinking.Notre rapport aux mĂ©dias et notre rapport Ă  la technique et Ă  ses dĂ©veloppements suscitent les mĂȘmes rĂ©actions d'attraction et de rĂ©pulsion, voyant tantĂŽt dans les mĂ©dias et la technique le lieu de la libertĂ©, tantĂŽt les formes mĂȘmes de l'aliĂ©nation. Ce mouvement parallĂšle qui accompagne notre critique doit nous conduire Ă  nous interroger sur la place et la forme que peut prendre une Ă©ducation aux mĂ©dias lorsque se pose la question de la formation Ă  la maĂźtrise de outils techniques. Il s'agit alors de montrer qu'une simple formation Ă  la maĂźtrise technique ne rĂ©pond en rien aux exigences d'une Ă©ducation aux mĂ©dias dont la fin est la formation citoyenne et le dĂ©veloppement de l'esprit critique

    Synthesis and in vitro characterisation of ifenprodil-based fluorescein conjugates as GluN1/GluN2B N-Methyl-D-aspartate receptor antagonists.

    No full text
    International audienceGluN2B-containing NMDA receptors are involved in many important physiological functions and play a pivotal role in mediating pain as well as in several neurodegenerative disorders. We aimed to develop fluorescent probes to target the GluN2B subunit selectively in order to allow better understanding of the relationships between receptor localisation and physiological importance. Ifenprodil, known as the GluNR2B antagonist of reference, was chosen as the template for the elaboration of probes. We had previously reported a fluorescein conjugate that was shown (by confocal microscopy imaging of DS-red-labelled cortical neurons) to bind specifically to GluN2B. To elaborate this probe, we explored the influence of both the nature and the attachment point of the spacer between the fluorophore and the parent compound, ifenprodil. We performed chemical modifications of ifenprodil at the benzylic position and on the phenol ring by introducing secondary amine or amide functions and evaluated alkyl chains from two to 20 bonds either including or not including secondary amide functions as spacers. The previously developed probe was found to display the greatest activity in the inhibition of NMDA-induced Ca(2+) influx by calcium imaging experiments on HEK293 cells transfected with the cDNA encoding for GluN1-1A and GluN2B. Further investigations revealed that this probe had a neuroprotective effect equivalent to that of ifenprodil in a standard test for neurotoxicity. Despite effects of lesser amplitude with these probes relative to ifenprodil, we demonstrated that they displaced [(3) H]ifenprodil in mouse brain slices in a similar manner

    Chemical Delivery System of MIBG to the Central Nervous System: Synthesis, 11 C-Radiosynthesis, and in Vivo Evaluation

    No full text
    LDM TEPInternational audienceThe norepinephrine transporter (NET) plays an important role in neurotransmission and is involved in a multitude of psychiatric and neurodegenerative diseases. [123I/131I]meta-iodobenzylguanidine (MIBG) is a widely used radiotracer in the diagnosis and follow-up of peripheral neuroendocrine tumors overexpressing the norepinephrine transporter. MIBG does not cross the blood–brain barrier (BBB), and we have demonstrated the “proof-of-concept” that 1,4-dihydroquinoline/quinolinium salt as chemical delivery system (CDS) is a promising tool to deliver MIBG to the brain. To improve BBB passage, various substituents on the 1,4-dihydroquinoline moiety and a linker between CDS and MIBG were added. A series of CDS-MIBG 1a–d was synthesized, labeled with carbon-11, and evaluated in vivo into rats. The in vivo results demonstrated that, although adding substituents on CDS in 1a–c is of no benefit for brain delivery of MIBG, the presence of a linker in CDS-MIBG 1d greatly improved both brain penetration and the release rate of MIBG in the central nervous system
    corecore