3,533 results match your criteria: "Universite Joseph Fourier[Affiliation]"

A Gold Rush: Designing Hydrogels for Selective Recovery in Wastewater Containing Mixed Metal Ions.

ACS Appl Mater Interfaces

December 2024

European Laboratory for Non-Linear Spectroscopy (LENS), Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy.

The use of synthetic hydrogels in wastewater treatment represents a promising and scalable approach to achieving clean water. By modulation of their chemical structure, hydrogels can effectively remove a wide range of toxic compounds, including emerging organic pollutants and heavy metals. For the latter, recovery is essential for both environmental protection and metal recycling.

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Protocol for the collection, packaging, and transportation of preterm newborn stool samples.

Clinics (Sao Paulo)

November 2024

Health Research and Extension Center, Postgraduate Program in Public Health, Department of Health, Universidade Estadual de Feira de Santana, Feira de Santana, BA, Brazil; PhD in Medicine and Health, Universidade Federal da Bahia, Salvador, BA, Brazil.

Article Synopsis
  • The study focuses on establishing a reliable protocol for collecting and handling stool samples from preterm newborns in NICUs, highlighting the importance of varying intestinal microbiota based on gestational age.
  • It involved a descriptive, observational approach aligned with evidence-based guidelines from the Brazilian Ministry of Health and was conducted in two public hospitals.
  • The resulting protocol successfully maintained bacterial DNA integrity in stool samples, offering clear recommendations that can enhance future research and practices in similar clinical settings.
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Soft magnetic materials, like NiZnFeO, require high temperatures and regulated environments for their manufacture and processing, which can be highly energy intensive. These requirements therefore result in higher production costs and energy consumption. To address this issue, the development of composite materials based on soft magnetic ferrites has become a prominent research area.

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The known I^{π}=8_{1}^{+}, E_{x}=2129-keV isomer in the semimagic nucleus ^{130}Cd_{82} was populated in the projectile fission of a ^{238}U beam at the Radioactive Isotope Beam Factory at RIKEN. The high counting statistics of the accumulated data allowed us to determine the excitation energy, E_{x}=2001.2(7)  keV, and half-life, T_{1/2}=57(3)  ns, of the I^{π}=6_{1}^{+} state based on γγ coincidence information.

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With the increasing demand of new magnetic materials for modern technological application alternatives to conventional magnetic materials, the development of lightweight polymer magnetic composites has become a prominent research area. For this perspective, a new magnetic material was developed using 30 wt% nickel ferrite micro and nanoparticles as fillers for a high-density polyethylene matrix. The development process began with the synthesis of NF-micro and NF-nanoparticles using solid-state and co-precipitation techniques, respectively, followed by extrusion molding and injection molding.

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The specification of the embryonic central nervous system (CNS) into future brain (forebrain, midbrain, or hindbrain) and spinal cord (SC) regions is a critical step of CNS development. A previous chicken embryo study indicated that anterior epiblast cells marked by N2 enhancer activity are specified to the respective brain regions during the transition phase of the epiblast to the neural plate-forming neural primordium. The present study showed that the SC precursors positioned posterior to the hindbrain precursors in the anterior epiblast migrated posteriorly in contrast to the anterior migration of brain precursors.

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Sensory Reinforced Corticostriatal Plasticity.

Curr Neuropharmacol

June 2024

Department of Anatomy, Brain Health Research Centre, University of Otago, Dunedin 9054, New Zealand.

Article Synopsis
  • The study explores how delayed reinforcement signals affect corticostriatal transmission, crucial for learning from actions, since typical rewards usually come after actions are taken.
  • Researchers aimed to create a model where a sensory cue prompts these delayed signals to better understand their role in strengthening neural connections.
  • Findings showed that sensory rewards can enhance neuron activity in the striatum when timed correctly, and blocking dopamine receptors reduced this effect, providing insights into the mechanisms of learning and reinforcement.
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Retraction Note: p14 promotes RB accumulation through inhibition of its Tip60-dependent acetylation.

Oncogene

September 2023

INSERM U578, Groupe de Recherche sur le Cancer du Poumon, Faculté de Medecine, Institut Albert Bonniot, Université Joseph Fourier, La Tronche Cedex, France.

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Asthma, rhinitis, and atopic dermatitis (AD) are interrelated clinical phenotypes that partly overlap in the human interactome. The concept of "one-airway-one-disease," coined over 20 years ago, is a simplistic approach of the links between upper- and lower-airway allergic diseases. With new data, it is time to reassess the concept.

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Uranyl-protein interactions participate in uranyl trafficking or toxicity to cells. In addition to their qualitative identification, thermodynamic data are needed to predict predominant mechanisms that they mediate in vivo. We previously showed that uranyl can substitute calcium at the canonical EF-hand binding motif of calmodulin (CaM) site I.

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Therapies targeting the tyrosine kinase receptor HER2 have significantly improved survival of patients with HER2 cancer. However, both and acquired resistance remain a challenge, particularly in the brain metastatic setting. Here we report that, unlike other HER tyrosine kinase receptors, HER2 possesses a binding motif in its cytosolic juxtamembrane region that allows interaction with members of the Ezrin/Radixin/Moesin (ERM) family.

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Vascular development is a complex multistep process involving the coordination of cellular functions such as migration, proliferation, and differentiation. How mechanical forces generated by cells and transmission of these physical forces control vascular development is poorly understood. Using an endothelial-specific genetic model in mice, we show that deletion of the scaffold protein Angiomotin (Amot) inhibits migration and expansion of the physiological and pathological vascular network.

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We describe an analysis comparing the pp[over ¯] elastic cross section as measured by the D0 Collaboration at a center-of-mass energy of 1.96 TeV to that in pp collisions as measured by the TOTEM Collaboration at 2.76, 7, 8, and 13 TeV using a model-independent approach.

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Catecholaminergic polymorphic ventricular tachycardia (CPVT) is triggered by exercise or acute emotion in patients with normal resting electrocardiogram. The major disease-causing gene is , encoding the cardiac ryanodine receptor (RyR2). We report a novel variant, p.

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3D-printed scaffold combined to 2D osteoinductive coatings to repair a critical-size mandibular bone defect.

Mater Today Bio

June 2021

CEA, CNRS, Université de Grenoble Alpes, ERL5000 BRM, IRIG Institute, 17 Rue des Martyrs, F-38054, Grenoble, France.

The reconstruction of large bone defects (12 cm) remains a challenge for clinicians. We developed a new critical-size mandibular bone defect model on a minipig, close to human clinical issues. We analyzed the bone reconstruction obtained by a 3D-printed scaffold made of clinical-grade polylactic acid (PLA), coated with a polyelectrolyte film delivering an osteogenic bioactive molecule (BMP-2).

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As quantum coherence times of superconducting circuits have increased from nanoseconds to hundreds of microseconds, they are currently one of the leading platforms for quantum information processing. However, coherence needs to further improve by orders of magnitude to reduce the prohibitive hardware overhead of current error correction schemes. Reaching this goal hinges on reducing the density of broken Cooper pairs, so-called quasiparticles.

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Factors associated with back complaints among French medical students.

Joint Bone Spine

March 2021

Service de santé au travail, CHU de Saint-Étienne, Saint-Étienne, France; Univ Lyon, Univ Lyon 1, Univ St Etienne, IFSTTAR, UMRESTTE, UMR_T9405, 42005 Saint-Étienne, France.

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Validated MAGIC and GWAS population mapping reveals the link between vitamin E content and natural variation in chorismate metabolism in tomato.

Plant J

February 2021

Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET), Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, C1428EHA, Argentina.

Tocochromanols constitute the different forms of vitamin E (VTE), essential components of the human diet, and display a high membrane protectant activity. By combining interval mapping and genome-wide association studies (GWAS), we unveiled the genetic determinants of tocochromanol accumulation in tomato (Solanum lycopersicum) fruits. To enhance the nutritional value of this highly consumed vegetable, we dissected the natural intraspecific variability of tocochromanols in tomato fruits and genetically engineered their biosynthetic pathway.

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Here we present the use of surface nanopatterning of covalently immobilized BMP-2 and integrin selective ligands to determine the specificity of their interactions in regulating cell adhesion and focal adhesion assembly. Gold nanoparticle arrays carrying single BMP-2 dimers are prepared by block-copolymer micellar nanolithography and azide-functionalized integrin ligands (cyclic-RGD peptides or αβ integrin peptidomimetics) are immobilized on the surrounding polyethylene glycol alkyne by click chemistry. Compared to BMP-2 added to the media, surface immobilized BMP-2 (iBMP-2) favors the spatial segregation of adhesion clusters and enhances focal adhesion (FA) size in cells adhering to αβ integrin selective ligands.

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A quantum liquid of magnetic octupoles on the pyrochlore lattice.

Nat Phys

May 2020

Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland.

Spin liquids are highly correlated yet disordered states formed by the entanglement of magnetic dipoles. Theories define such states using gauge fields and deconfined quasiparticle excitations that emerge from a local constraint governing the ground state of a frustrated magnet. For example, the '2-in-2-out' ice rule for dipole moments on a tetrahedron can lead to a quantum spin ice in rare-earth pyrochlores.

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Traction force microscopy (TFM) enables the measurement of forces produced by a cell on a substrate. This technique infers traction force measurements from an experimentally observed displacement field produced by a cell pulling on an elastic substrate. Here, we adapted TFM to investigate the spatial and temporal structure of the force field exerted by B cells when activated by antigen engagement of the B cell receptor.

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