1,078,513 results match your criteria: "France; Universite de Bordeaux[Affiliation]"

According to the Projective Consciousness Model (PCM), in human spatial awareness, 3-dimensional projective geometry structures information integration and action planning through perspective taking within an internal representation space. The way different perspectives are related to and transform a world model defines a specific perception and imagination scheme. In mathematics, such a collection of transformations corresponds to a 'group', whose 'actions' characterize the geometry of a space.

View Article and Find Full Text PDF

Introduction: The MAPT gene encodes Tau, a protein mainly expressed by neurons. Tau protein plays an important role in cerebral microtubule polymerization and stabilization, in axonal transport and synaptic plasticity. Heterozygous pathogenic variation in MAPT are involved in a spectrum of autosomal dominant neurodegenerative diseases known as taupathies, including Alzheimer's disease, Pick's disease, fronto-temporal dementia, cortico-basal degeneration and progressive supranuclear palsy.

View Article and Find Full Text PDF

Single-cell proteomics (SCP) promises to revolutionize biomedicine by providing an unparalleled view of the proteome in individual cells. Here, we present a high-sensitivity SCP workflow named Chip-Tip, identifying >5,000 proteins in individual HeLa cells. It also facilitated direct detection of post-translational modifications in single cells, making the need for specific post-translational modification-enrichment unnecessary.

View Article and Find Full Text PDF

Patients with essential thrombocythemia (ET) have a chronic evolution with a risk of hematological transformation associated with a dismal outcome. Since patients with resistance or intolerance have an adverse prognosis, it is important to identify which patient will respond to first-line treatment. We therefore aim to describe the association between additional mutations and response to first-line treatment in patients with ET.

View Article and Find Full Text PDF

Purpose: In resective epilepsy surgery for drug-resistant focal epilepsy (DRE), good seizure outcome is strongly associated with visualization of an epileptogenic lesion on MRI. Standard clinical MRI (≤ 3 Tesla (T)) may fail to detect subtle lesions. 7T MRI enhances detection and delineation, the potential benefits of increasing field strength to 9.

View Article and Find Full Text PDF

A single microfluidic device for multi-omics analysis sample preparation.

Lab Chip

January 2025

Spectrométrie de Masse Biologique et Protéomique SMBP, ESPCI Paris, LPC CNRS UMR 8249, PSL University, 10 Rue Vauquelin, F-75005 Paris, France.

Combining different "omics" approaches, such as genomics and proteomics, is necessary to generate a detailed and complete insight into microbiome comprehension. Proper sample collection and processing and accurate analytical methods are crucial in generating reliable data. We previously developed the ChipFilter device for proteomic analysis of microbial samples.

View Article and Find Full Text PDF

Importance: Some patients worldwide are asked to acquire an anti-vascular endothelial growth factor (anti-VEGF) agent from a pharmacy, store it, and then bring it to a physician for intravitreal injection (IVT). Anti-VEGF agents must be stored in the refrigerator to avoid bacterial contamination or denaturation. Some cases of severe intraocular inflammation have been reported following IVT of more recently approved anti-VEGF agents, which might be explained by thermal instability.

View Article and Find Full Text PDF

Introduction: This study aimed to evaluate the safety and efficacy of HoLEP in patients aged > 85 years with indwelling catheter (IDC).

Methods: We retrospectively analyzed our bicentric HoLEP database to identify consecutive patients with IDC and trial without catheter (TWOC) failure who underwent surgery between June 2012 and April 2020. Our primary focus was on the population over 85 years of age; Patients under 70 years of age were used as controls.

View Article and Find Full Text PDF

Once-weekly IcoSema versus once-weekly semaglutide in adults with type 2 diabetes: the COMBINE 2 randomised clinical trial.

Diabetologia

January 2025

Internal Medicine Department, Endocrine Division (SEMPR), Universidade Federal do Paraná, Curitiba, Brazil.

Aims/hypothesis: COMBINE 2 assessed the efficacy and safety of once-weekly IcoSema (a combination therapy of basal insulin icodec and semaglutide) vs once-weekly semaglutide (a glucagon-like peptide-1 analogue) 1.0 mg in individuals with type 2 diabetes inadequately managed with GLP-1 receptor agonist (GLP-1 RA) therapy, with or without additional oral glucose-lowering medications.

Methods: This 52 week, randomised, multicentre, open-label, parallel group, Phase IIIa trial was conducted across 121 sites in 13 countries/regions.

View Article and Find Full Text PDF

Intercellular mitochondria transfer is an evolutionarily conserved process in which one cell delivers some of their mitochondria to another cell in the absence of cell division. This process has diverse functions depending on the cell types involved and physiological or disease context. Although mitochondria transfer was first shown to provide metabolic support to acceptor cells, recent studies have revealed diverse functions of mitochondria transfer, including, but not limited to, the maintenance of mitochondria quality of the donor cell and the regulation of tissue homeostasis and remodelling.

View Article and Find Full Text PDF

Identifying the parameters of a solar photovoltaic (PV) model optimally, is necessary for simulation, performance assessment, and design verification. However, precise PV cell modelling is critical for design due to many critical factors, such as inherent nonlinearity, existing complexity, and a wide range of model parameters. Although different researchers have recently proposed several effective techniques for solar PV system parameter identification, it is still an interesting challenge for researchers to enhance the accuracy of the PV system modelling.

View Article and Find Full Text PDF

MicroRNAs (miRNAs) are central players of the regulation of gene expression in Eukaryotes. The repertoires of miRNA genes vary drastically even among closely related species, indicating that they are evolutionarily labile. However, the processes by which they originate over the course of evolution and the nature of their progenitors across the genome remain poorly understood.

View Article and Find Full Text PDF

Amelioration of a von Willebrand disease type 2B phenotype in vivo upon treatment with allele-selective siRNAs.

Blood Adv

January 2025

Department of Internal Medicine, Division of Thrombosis and Hemostasis, Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, The Netherlands.

Treatment options for the bleeding disorder von Willebrand disease type 2B (VWD2B) are insufficient and fail to address the negative effects of circulating mutant von Willebrand factor (VWF). The dominant-negative nature of VWD2B makes functionally defective VWF an interesting therapeutic target. Previous in vitro studies have demonstrated the feasibility of allele-selective silencing of mutant VWF using small interfering RNAs (siRNAs) targeting common single nucleotide polymorphisms (SNPs) in the human VWF gene, an approach that can be applied irrespective of the disease-causing VWF mutation.

View Article and Find Full Text PDF

Influenza vaccine effectiveness and immunogenicity can be compromised with repeated vaccination. We assessed immunological markers in a cohort of healthcare workers (HCW) from six public hospitals around Australia during 2020-2021. Sera were collected pre-vaccination and ~14 and ~180 days post-vaccination and assessed in haemagglutination inhibition assay against egg-grown vaccine and equivalent cell-grown viruses.

View Article and Find Full Text PDF

Objectives: Loneliness is associated with an elevated risk of dementia. There is mixed evidence from imaging studies on whether loneliness is associated with neuropathology in dementia-free adults. This study tests whether loneliness is associated with plasma neurobiomarkers of amyloid (Aβ42/Aβ40), phosphorylated tau 181 (pTau181), neurofilament light chain (NfL), and glial fibrillary acidic protein (GFAP) and imaging measures of amyloid and tau.

View Article and Find Full Text PDF

In the tumour microenvironment, IL-1α promotes neoangiogenesis, matrix remodelling, tumour proliferation, chemoresistance, and metastases. Highly expressed in human colorectal cancers, IL-1α is associated with poor prognosis. XB2001, a fully human monoclonal antibody neutralizing IL-1α, was evaluated for safety and preliminary efficacy with trifluridine/tipiracil (FTD/TPI) and bevacizumab in metastatic colorectal cancer patients previously treated with oxaliplatin- and irinotecan-based chemotherapies.

View Article and Find Full Text PDF

Speech Perception in Noise After Cochlear Implantation for Single-Sided Deafness: A Randomized Clinical Trial.

JAMA Otolaryngol Head Neck Surg

January 2025

Department of Otorhinolaryngology and Head & Neck Surgery, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.

Importance: There is a lack of high level of evidence studies comparing the effect of different treatment options for single-sided deafness (SSD).

Objective: To determine the effect of a cochlear implant (CI), bone conduction device (BCD), contralateral routing of signals hearing aid (CROS), and no treatment on speech perception in noise outcomes in patients with SSD.

Design, Setting, And Participants: In this single-center randomized clinical trial, adult patients with SSD were randomized into 3 groups: CI; a trial period with first a BCD on a headband and then a CROS; or a trial period with first a CROS and then a BCD on a headband.

View Article and Find Full Text PDF

Mitotic chromatin marking governs the segregation of DNA damage.

Nat Commun

January 2025

Laboratory of Epigenome Integrity, Epigenetics & Cell Fate Centre, UMR7216 CNRS, Université Paris Cité, Paris, France.

The faithful segregation of intact genetic material and the perpetuation of chromatin states through mitotic cell divisions are pivotal for maintaining cell function and identity across cell generations. However, most exogenous mutagens generate long-lasting DNA lesions that are segregated during mitosis. How this segregation is controlled is unknown.

View Article and Find Full Text PDF

Rationally designed universal passivator for high-performance single-junction and tandem perovskite solar cells.

Nat Commun

January 2025

State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China.

Interfacial trap-assisted nonradiative recombination hampers the development of metal halide perovskite solar cells (PSCs). Herein, we report a rationally designed universal passivator to realize highly efficient and stable single junction and tandem PSCs. Multiple defects are simultaneously passivated by the synergistic effect of anion and cation.

View Article and Find Full Text PDF

Vortex beams are currently drawing a great deal of interest, from fundamental research to several promising applications. While their generation in bulky optical devices limits their use in integrated complex systems, metasurfaces have recently proven successful in creating optical vortices, especially in the linear regime. In the nonlinear domain, of strategic importance for the future of classical and quantum information, to date orbital angular momentum has only been created in qualitative ways, without discussing discrepancies between design and experimental results.

View Article and Find Full Text PDF

Expression of concern for 'Nanocrystalline starch grafted palladium(II) complex for the Mizoroki-Heck reaction' by Sanny Verma , , 2013, , 14454-14459, https://doi.org/10.1039/C3DT51685G.

View Article and Find Full Text PDF

Molecular dynamics simulations are performed to investigate the influence of isotope substitutions on the Eley-Rideal recombination dynamics of hydrogen isotopes from the (100) and (110) surfaces of tungsten. Dissipation of electrons and phonons is taken into account by, respectively, the local density friction approximation and the general Langevin oscillator, effective models which have been intensively used in recent years. As the coupling to surface phonons and electrons might be altered by the mass combination, the main objective of the paper is to assess the role of dissipation to the surface in the course of abstraction.

View Article and Find Full Text PDF

Interaction with host cell receptors initiates internalization of Kaposi's sarcoma-associated herpesvirus (KSHV) particles. Fusion of viral and host cell membranes, which is followed by release of the viral capsid into the cytoplasm, is executed by the core fusion machinery composed of glycoproteins H (gH), L (gL), and B (gB), that is common to all herpesviruses. KSHV infection has been shown to be sensitive to inhibitors of vacuolar acidification, suggestive of low pH as a fusion trigger.

View Article and Find Full Text PDF