SNARE-Mediated Membrane Fusion Probed Using a Synthetic Organelle in the Living Bacterium.

Studies on the mechanisms and regulation of functional assemblies of SNARE proteins mediating membrane fusion essentially make use of recombinant proteins and artificial phospholipid bilayers. We have developed an easy-to-use in vivo system reconstituting membrane fusion in living bacteria. It relies on the formation of caveolin-dependent intracytoplasmic cisternae followed by the controlled synthesis of members of the synaptic SNARE machinery.

Using a citizen science approach to assess nanoplastics pollution in remote high-altitude glaciers.

Nanoplastics are suspected to pollute every environment on Earth, including very remote areas reached via atmospheric transport. We approached the challenge of measuring environmental nanoplastics by combining high-sensitivity TD-PTR-MS (thermal desorption-proton transfer reaction-mass spectrometry) with trained mountaineers sampling high-altitude glaciers ("citizen science"). Particles < 1 μm were analysed for common polymers (polyethylene, polyethylene terephthalate, polypropylene, polyvinyl chloride, polystyrene and tire wear particles), revealing nanoplastic concentrations ranging 2-80 ng mL at five of 14 sites.

Production scheduling with multi-robot task allocation in a real industry 4.0 setting.

The demand for efficient Industry 4.0 systems has driven the need to optimize production systems, where effective scheduling is crucial. In smart manufacturing, robots handle material transfers, making precise scheduling essential for seamless operations.

Transcription factor FOXD1 and miRNA-204-5p play a major role in B4GALNT2 downregulation in colon cancer.

The β1,4-N-acetylgalactosaminyltransferase 2 (B4GALNT2) which synthesizes the histo-blood group antigen Sd is highly expressed by normal colon, but it is dramatically down-regulated in colorectal cancer (CRC). High B4GALNT2 expression in CRC tissues is a marker of longer survival. The molecular bases of B4GALNT2 inhibition in CRC are largely obscure.

Uniform impact on individual megakaryocytes is essential for efficient in vitro platelet production.

Different approaches are being developed to efficiently produce in vitro platelets from cultured megakaryocytes to meet the constant demand of platelet transfusion and serve for research purposes. Recent works have shown that turbulence and periodic stress can significantly enhance platelet yield. Here we have developed and characterized a platelet production device that takes in account these properties.

Influenza A virus in dairy cattle: infection biology and potential mammary gland-targeted vaccines.

Influenza, a major "One Health" threat, has gained heightened attention following recent reports of highly pathogenic avian influenza in dairy cattle and cow-to-human transmission in the USA. This review explores general aspects of influenza A virus (IAV) biology, its interactions with mammalian hosts, and discusses the key considerations for developing vaccines to prevent or curtail IAV infection in the bovine mammary gland and its spread through milk.

Genome-wide association study unravels mechanisms of brain glymphatic activity.

Brain glymphatic activity, as indicated by diffusion-tensor imaging analysis along the perivascular space (ALPS) index, is involved in developmental neuropsychiatric and neurodegenerative diseases, but its genetic architecture is poorly understood. Here, we identified 17 unique genome-wide significant loci and 161 candidate genes linked to the ALPS-indexes in a discovery sample of 31,021 individuals from the UK Biobank. Seven loci were replicated in two independent datasets.

Conformational diversity in class C GPCR positive allosteric modulation.

The metabotropic glutamate receptors (mGlus) are class C G protein-coupled receptors (GPCR) that form obligate dimers activated by the major excitatory neurotransmitter L-glutamate. The architecture of mGlu receptor comprises an extracellular Venus-Fly Trap domain (VFT) connected to the transmembrane domain (7TM) through a Cysteine-Rich Domain (CRD). The binding of L-glutamate in the VFTs and subsequent conformational change results in the signal being transmitted to the 7TM inducing G protein binding and activation.

Impact of workflow times on successful reperfusion after endovascular treatment in the late time window.

Background And Purpose: Successful and complete reperfusion should be the aim of every endovascular thrombectomy (EVT) procedure. However, the effect of time delays on successful reperfusion in late window stroke patients presenting 6-to-24 h from onset has not been investigated.

Materials And Methods: We pooled individual patient-level data from seven trials and registries for anterior circulation stroke patients treated with EVT between 6 and 24 h from onset.

Charcot as a collector and critic of the arts: Relationship of the 'founder of neurology' with various aspects of art.

In his teaching, Charcot often used artistic representations from previous centuries to illustrate the historical developments of various conditions, particularly hysteria, mainly with the help of his pupil Paul Richer. Charcot liked to draw portraits and sketches of colleagues during boring faculty meetings and students' examinations, including caricatures of himself and others, church sculptures, landscapes, soldiers, and so on. He also used this skill in his clinical and scientific work.

[Recommendations for clinical practice: Prevention and management of varicella zoster virus (VZV) infection during pregnancy and the perinatal period (extended version)].

The Société de Pathologie Infectieuse de Langue Française released in 2024 a new national recommendation for clinical practice on the prevention and management of varicella zoster virus (VZV) infection during pregnancy and the perinatal period. The previous recommendation was issued in 1998, at a time of anti-VZV immunoglobulins shortage; it has hence become obsolete. This recommendation is a formalized expert consensus focusing on infectious diseases management; it is drawn up by a multidisciplinary working group (infectiologists, obstetricians, pediatricians, microbiologists, midwives, hygienists).

The "HAT-TRICK' technique: A Modification of soft tissue grafting using volume stable collagen matrix and cross-linked hyaluronic acid. Part B: Clinical applications in the esthetic zone.

Soft tissue deficiency around dental implants can negatively impact outcomes in terms of esthetics and long-term stability. While autogenous connective tissue grafting is still considered the gold standard treatment, alternative approaches are being proposed primarily to enhance patient comfort and avoid invasive procedures such as two-sites surgeries using xenogeneic collagen matrices. Despite the advantages, the quality of the regenerated tissues remains unpredictable and, in many cases, questionable, highlighting the need for alternative and innovative approaches.

Return to work after primary total knee replacement in patients under 55 years of age: a retrospective study of 129 cases.

Introduction: Primary total knee arthroplasty (TKA) has shown excellent results in the treatment of osteoarthritis, and its indications have now been extended to younger patients of working age. Few articles in the literature have studied the return to work of young subjects, and no specific studies have been conducted in France. Therefore, we carried out a retrospective study to 1) investigate the rate and delay of return to work after primary TKA in a population under 55 years of age and 2) identify factors influencing early return to work before 3 months, the period usually used as the duration of initial work stoppage (TS).

Biomechanical assessment of ligament maturation after arthroscopic ligament reconstruction of the anterior talofibular ligament.

Background: Many techniques have been described for lateral ankle ligament reconstruction. Although the biomechanical properties of gracilis tendons are different from those of ligaments, the use of a gracilis tendon autograft is a popular option for anatomical reconstruction. Graft maturation and the biomechanical processes over time remain unclear.

Low-level primary clarithromycin resistance of Helicobacter pylori in Reunion Island.

Introduction: The increasing resistance of Helicobacter pylori to clarithromycin leads to an ongoing adaptation of empirical first-line treatment for H. pylori infections.

Patients And Methods: Prospective study (2022-2023) of 364 patients with no previous treatment for H.

Exploring the influence of perineal biometrics and stiffness measured by elastography during pregnancy on perineal tears : a pilot study.

Objectives: This study aimed to describe the biometrics and elasticity of the perineal body and the anal sphincter in the ninth month of pregnancy and explore their association with the risk of perineal tears during childbirth.

Methods: In this prospective observational study, pregnant women at 36-40 weeks of gestation were included. Using transperineal 2D-mode ultrasound and shear wave elastography (SWE), we measured the biometrics and stiffness of the perineal body (PB), external anal sphincter (EAS), internal anal sphincter (IAS), and anal mucosa (AM) at rest and during Valsalva maneuvers.

Hospital outbreak of NDM-producing Klebsiella pneumoniae in a surgical intensive care unit: sink traps as the causing source of epidemic strain resurgence.

We report the management of a New Delhi metallo-β-lactamase-producing Klebsiella pneumoniae outbreak in a surgical intensive care unit over 1 year. NDM-producing Enterobacterales were isolated from sink traps. The installation of new sink traps closed the outbreak.

Results from a phase 1b study of telisotuzumab vedotin in combination with osimertinib in patients with c-Met protein-overexpressing, EGFR-mutated locally advanced/metastatic non-small cell lung cancer (NSCLC) after progression on prior osimertinib.

Background: Osimertinib is the standard first-line treatment for advanced epidermal growth factor receptor (EGFR)-mutated NSCLC. However, treatment resistance is inevitable and increased c-Met protein expression correlates with resistance. Telisotuzumab vedotin (Teliso-V) is an antibody-drug conjugate that targets c-Met protein overexpression.

Medication Use in People Aged 90 Years and Older: A Nationwide Study.

Objective: We aimed to describe the medications prescribed to people aged ≥90 years.

Design: A cohort study was performed using data from the year 2022.

Setting And Participants: Using data from the French National Health Data System, people aged ≥90 years affiliated with the general insurance scheme were included.