news 2017


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Results 41 - 60 of 150.


Health - Life Sciences - 21.09.2017
"Humanized" Mouse Model Developed to Study Hepatitis B Infection
The ANRS consortium "Humanized Mouse Models for Viral Hepatitis"1, made up of 6 teams of researchers, has developed a mouse model for studying the interaction between the immune system and the liver following infection by the hepatitis B virus. This research, coordinated by Dr. Hélène Strick-Marchand (Inserm joint unit 1223, "Physiopathology of the Immune System", Institut Pasteur), responds to a real lack of animal models for studying this disease and thus opens up the possibilities for evaluating new therapeutic strategies.

Life Sciences - 13.09.2017
Synaptic receptor mobility :discovery of a new mechanism for controlling memory
Synaptic receptor mobility :discovery of a new mechanism for controlling memory
Researchers in Bordeaux recently discovered a new mechanism for storing information in synapses and a means of controlling the storage process. The breakthrough moves science closer to unveiling the mystery of the molecular mechanisms of memory and learning processes. The research, carried out primarily by researchers at the Interdisciplinary Institute for Neurosciences (CNRS/Université de Bordeaux) and the Bordeaux Imaging Center (CNRS/Université de Bordeaux/Inserm) 1 , appears in the 13 september 2017 edition of Nature .

Health - 13.09.2017
Researchers Warn About Mixtures of Endocrine Disruptors During Pregnancy
A new study led by Inserm researchers from Irset, the Research Institute for Environmental and Occupational Health, [1 ] shows for the first time in humans that simultaneous exposure to endocrine disruptors exacerbates the effects observed from exposure to each chemical independently. This study focused principally on the human fetal testes and the potential consequences of these mixtures on development of the reproductive system, as the selected chemicals inhibited testosterone production.

Physics - Life Sciences - 12.09.2017
Magnetic cellular
Magnetic cellular "Legos" for the regenerative medicine of the future
By incorporating magnetic nanoparticles in cells and developing a system using miniaturized magnets, researchers at the Laboratoire Matière et Systèmes Complexes (CNRS/Université Paris Diderot), in c

Health - Life Sciences - 08.09.2017
Animal welfare : Potential new indicator of chronic stress in horses
Animal welfare : Potential new indicator of chronic stress in horses
Cortisol is generally considered to be a stress hormone because its levels rise during episodes of acute stress. Yet its relationship to chronic stress is less clear. Researchers from the Éthologie Animale et Humaine laboratory (CNRS / Université de Rennes 1 /Université of Caen) and the Research Institute for Environmental and Occupational Health (INSERM /Université de Rennes 1), in collaboration with the University of Veterinary Medicine in Vienna, have linked lower cortisol levels to states of chronically poor welfare in adult horses observed under their usual living conditions.

Health - 04.09.2017
Schizophrenia: the link between personality disorders and the perception of time
A recent study conducted by Anne Giersch and her team of researchers (Inserm Unit 1114 /University of Strasbourg) showed that some people with schizophrenia are unable to perceive and anticipate the passage of time. These results, published in the Scientific Reports journal, also reveal a link between fragile temporal prediction and minimal self disorders (self-perception, "I am here, now").

Astronomy / Space Science - Chemistry - 04.09.2017
Does the organic material of comets predate our Solar System ?
Does the organic material of comets predate our Solar System ?
The Rosetta space probe discovered a large amount of organic material in the nucleus of comet “Chury.” In an article published by MNRAS on August 31, 2017, two French researchers advance the theory that this matter has its origin in interstellar space and predates the birth of the Solar System. The ESA's Rosetta mission, which ended in September 2016, found that organic matter made up 40% (by mass) of the nucleus of comet 67P Churyumov-Gerasimenko, a.k.a.

Life Sciences - Health - 01.09.2017
The bacteria responsible for Legionellosis modulates the host cell metabolism to its advantage
The bacteria responsible for Legionellosis modulates the host cell metabolism to its advantage
Scientists at the Institut Pasteur, CNRS and Inserm, together with a team from Switzerland*, have shown that the bacterial pathogen Legionella pneumophila (the causative agent of Legionnaires' disease or legionellosis) has developed a specific strategy to target the host cell mitochondria, the organelles in charge of cellular bioenergetics.

Environment - Computer Science - 31.08.2017
A new mobile application helps scientists map the sound environment
A new mobile application helps scientists map the sound environment
Anyone who owns an Android smartphone will soon be able to contribute to a research project, simply by recording surrounding noise.

Life Sciences - Chemistry - 30.08.2017
Electricity production : when enzymes rival platinum
Electricity production : when enzymes rival platinum
Making a biocell that is as effective as a platinum fuel cell: that's the feat that researchers in the Laboratoire de Bioénergétique et Ingénierie des Protéines (CNRS/Aix-Marseille Université) have a

History / Archeology - Environment - 29.08.2017
Rome's urban history inferred from Pb-contaminated waters trapped in its ancient harbor basins
Rome’s urban history inferred from Pb-contaminated waters trapped in its ancient harbor basins
Location of ancient Rome's harbor basins in the Tiber delta with the position of cores PO2 analyzed in this work . Photo S. Keay Heavy metals from urban runoff preserved in sedimentary deposits record long-term economic and industrial development via the expansion and contraction of a city's infrastructure.

Life Sciences - Health - 11.08.2017
Testicular macrophages are guardians of fertility
Testicular macrophages are guardians of fertility
The origin, development, and characteristics of two types of testicular macrophage have been described by a CNRS team at the Centre d'Immunologie de Marseille-Luminy (CNRS / INSERM / Aix-Marseille University). To elucidate the nature of these immune cells, the researchers used a novel cell tracing method.

Life Sciences - Health - 09.08.2017
Testicular macrophages are guardians of fertility
The origin, development, and characteristics of two types of testicular macrophage have been described by a CNRS team at the Centre d'Immunologie de Marseille-Luminy (CNRS / INSERM / Aix-Marseille University). To elucidate the nature of these immune cells, the researchers used a novel cell tracing method.

Life Sciences - 08.08.2017
Are learning and unlearning bedfellows ?
Are learning and unlearning bedfellows ?
We know that sleep helps us integrate knowledge acquired during the day. But can we learn new things while sleeping? By exposing subjects to repeated auditory stimuli, a team of researchers has just demonstrated that the brain is capable of learning such sound patterns during certain sleep stages—though they may be forgotten during deep sleep.

Astronomy / Space Science - Physics - 07.08.2017
The Sun's core makes a complete rotation in one week
The Sun’s core makes a complete rotation in one week
The rotation rate of the Sun's core has been accurately measured for the first time. The Sun, which has been remarkably stable for the past 4.6 billion years, is held together by the almost perfect equilibrium between the force of gravity, which tends to cause it to collapse, and the pressure of the thermonuclear reactions in its core.

Environment - Life Sciences - 03.08.2017
A new threat to pollination : the dark side of artificial light
A new threat to pollination : the dark side of artificial light
A European team, including a researcher from the Centre d'écologie et des Sciences de la Conservation (CNRS/MNHN/UPMC), has shown for the first time the direct and indirect impacts of artificial light on flower pollination. This threat to terrestrial ecosystems comes on top of other threats such as habitat loss, pesticide use, the spread of pathogens, and climate change.

Life Sciences - 25.07.2017
Structure of the Arabidopsis TOPLESS corepressor provides insight into the evolution of transcriptional repression
Structure of the Arabidopsis TOPLESS corepressor provides insight into the evolution of transcriptional repression
Significance: In most biological processes, genes have to be activated and/or repressed. In plants, the TOPLESS protein is essential for gene repression through its action as a corepressor bridging transcription factor with chromatin remodeling complexes. Here we combine biochemical and structural studies to describe the structure of TOPLESS, how it tetramerizes, and how it interacts with its protein partners.

Health - Life Sciences - 25.07.2017
Microdystrophin restores muscle strength in Duchenne muscular dystrophy
Researchers from Généthon, the AFM-Téléthon laboratory, Inserm (UMR 1089, Nantes) and the University of London (Royal Holloway) demonstrated the efficacy of an innovative gene therapy in the treatment of Duchenne muscular dystrophy. Indeed, after injecting microdystrophin (a "shortened" version of the dystrophin gene) via a drug vector, the researchers managed to restore muscle strength and stabilise the clinical symptoms in dogs naturally affected by Duchenne muscular dystrophy.

Physics - 24.07.2017
Turbulence in planetary cores excited by tides
Turbulence in planetary cores excited by tides
Veritable shields against high-energy particles, planets' magnetic fields are produced by iron moving in their liquid core. Yet the dominant model for explaining this system does not fit the smallest celestial bodies. Researchers at the Institut de Recherche sur les Phénomènes Hors Equilibre (IRPHE, CNRS/Aix Marseille Université/Centrale Marseille) and the University of Leeds have proposed a new model suggesting that turbulence in the liquid cores is due to tides produced by gravitational interactions between celestial bodies.

Health - Life Sciences - 20.07.2017
Gene therapy: first results in children with Sanfilippo B syndrome
On July 13, 2017, the journal Lancet Neurology published the results of a gene therapy trial conducted in four children with Sanfilippo type B syndrome (also known as MPS IIIB). This trial is the achievement of a two-decade partnership with financial support of AFM-Téléthon and the cooperation of the charity "Vaincre les Maladies Lysosomales" (VML).