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Nutrimed Medic System
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While the enzyme nitrogenase is vital to producing the nitrogen – in the form of ammonia – that winds up in proteins and nucleic acids, it is the secondary process of producing molecular hydrogen that scientists want to discover. Understanding how hydrogen is released and how it promotes ammonia production is key for unveiling the secrets of this mysterious enzyme. Scientists have known for some time that nitrogenase makes hydrogen by two different processes. Now, one of these processes is clear through the work of a team of researchers who studied the mechanism for hydrogen production. The team’s use of hydrogen/deuterium inventory to study the activities at the heart of the enzyme is the first such approach to reveal the mechanism for hydrogen formation by an enzyme, providing crucial insights into nitrogenase activity and serving as an example for other, similar studies. Learn more about this research at https://goo.gl/ECmZck.
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Chromosomes don’t need key protein for all their folds - Wibke Schwarzer, a post-doc in François Spitz’s former lab at EMBL, along with colleagues at EMBL-EBI, MIT, and the Pasteur Institute has revealed that a crucial architectural protein, cohesin, is necessary for chromosomal folding on the mega-base scale but not large-scale compartmentalisation. Their findings appeared last month in Nature. To investigate the role cohesin plays in chromosome folding in interphase, the team removed the ...
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Liver fibrosis may result from a wide variety of conditions including chronic alcohol exposure, hepatitis B virus (HBV) infection, hepatitis C virus (HCV) infection, Wilson's disease, and others. PNNL scientists have identified blood-based protein markers that allow methods of diagnosing #LiverFibrosis in patients. Learn more at https://goo.gl/sXNv66.
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L’insuffisance rénale résulte de l’évolution lente de maladies qui conduisent à la destruction des #reins. Des progrès fulgurants ont été réalisés ces 10 dernières années dans la compréhension des mécanismes impliqués. Et les recherches conduites autorisent aussi une meilleure adéquation des traitements aux patients, ainsi que la réduction des récidives. Pour en savoir plus, découvrez notre dossier :
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Enzymes’ superimposable structures revealed - Marco Marcia, Group Leader at EMBL Grenoble, in collaboration with researchers from Istituto Italiano di Tecnologia (Italy), published a study today in Structure providing new understanding of so-called two-metal-ion enzymes. This diverse group of enzymes, which perform a great number of different tasks, all rely on two essential metal ions in their active site to synthesize and cut DNA and RNA, thus ensuring the correct flow of genetic informat...
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Scientists have identified a set of biomarkers that indicate which patients infected with the #Ebola virus are most at risk of dying from the disease. The findings of this complex molecular study could allow clinicians to prioritize scarce treatment resources to treat the sickest patients. The research focused on blood samples from Ebola patients and analyzed activity levels of genes and proteins as well as the amounts of lipids and byproducts of metabolism. The team found 11 #biomarkers that distinguish fatal infections from non-fatal ones and two that, when screened for early upon symptom onset, accurately predict which patients are likely to die. Read more at https://goo.gl/RwMyoM.
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Bacteria that produce manganese oxides are skilled engineers of nanomaterials that, in turn, contribute to global biogeochemical cycles. Mineralization by these organisms is poorly understood, however, because involved enzymes are largely uncharacterized. A recent study revealed – for the first time – the structure of a bacterial enzyme complex responsible for manganese biomineralization and the nanoparticles it produces. This knowledge may allow scientists to engineer proteins for applications such as environmental remediation and bioenergy production. Learn more about this work at https://goo.gl/psGsbj.
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Spécialiste mondiale de l’épigénétique, Edith Heard a notamment découvert une partie des mécanismes qui régulent l’inactivation du chromosome X et le rôle de l’organisation nucléaire dans ce processus. L’Inserm vient de lui décerner son Grand Prix 2017. Découvrez son portrait vidéo !
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Les médias télévisuels s'intéressent de plus en plus à la question de la désinformation proliférant sur le net, ce média parallèle qu'ils ont longtemps mis de côté, à tort selon bon nombre d'observateurs des nouvelles technologies et sociologues spécialisés dans les mécanismes d'influence qui régissent cette plateforme. Le temps d'exposition aux écrans et aux médias des nouvelles générations allant en s'augmentant, ce qui est raccord avec le développement de plus en plus massif des Technologies de l'Information et de la Communication (TIC), il est question aujourd'hui de régulation et de maîtrise de ces nouveaux outils.

La chaîne LCI met ici en avant les travaux de Christophe Michel (créateur de la chaîne youtube Hygiène Mentale) et ceux de la professeure Rose Marie-Farinella (lauréate du 3e Prix mondial d’éducation aux médias pour son projet pédagogique d’éducation aux médias avec une classe de CM2 de l'école de Taninges, en Haute-Savoie). Des initiatives pertinentes et utiles tant aux enfants qu'aux adultes, permettant ainsi de passer par un modèle de transmission des savoirs plutôt que de restriction des accès. Un modèle préventif pour accompagner les générations présentes et à venir dans cette société dites de l'information, un projet que l'ONG Civilisation 2.0 ne peut donc qu'encourager et promouvoir !
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