66,915 results match your criteria: "Universitéde Montpellier[Affiliation]"

Impact of under-assisted ventilation on diaphragm function and structure in a porcine model.

Anesthesiology

January 2025

Department of Anesthesiology and Critical Care Medicine B (DAR B), Saint-Eloi Hospital, University Teaching Hospital of Montpellier, 80 avenue Augustin Fliche, 34295 Montpellier, France.

Background: Long-term controlled mechanical ventilation (CMV) in intensive care unit (ICU) induces ventilatory-induced-diaphragm-dysfunction (VIDD). The transition from CMV to assisted mechanical ventilation is a challenge that requires clinicians to balance over-assistance and under-assistance. While the effects of over-assistance on the diaphragm are well known, we aimed to assess the impact of under-assistance on diaphragm function and structure in piglet model with pre-existing VIDD (after long-term CMV) or without VIDD (short-term CMV).

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Cryo-EM structure and regulation of human NAD kinase.

Sci Adv

January 2025

Atelier de Biologie Chimie Informatique Structurale, Centre de Biologie Structurale, Univ Montpellier, CNRS, INSERM, 29 rue de Navacelles, 34090 Montpellier, France.

Reduced nicotinamide adenine dinucleotide phosphate (NADPH) is a crucial reducing cofactor for reductive biosynthesis and protection from oxidative stress. To fulfill their heightened anabolic and reductive power demands, cancer cells must boost their NADPH production. Progrowth and mitogenic protein kinases promote the activity of cytosolic NAD kinase (NADK), which produces NADP, a limiting NADPH precursor.

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Background: Trinucleotide repeat expansions are an emerging class of genetic variants associated with various movement disorders. Unbiased genome-wide analyses can reveal novel genotype-phenotype associations and provide a diagnosis for patients and families.

Objective: The aim was to identify the genetic cause of a severe progressive movement disorder phenotype in 2 affected brothers.

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Neutral lipids restrict the mobility of broken DNA molecules during comet assays.

Biol Cell

January 2025

Centre de Recherche en Biologie cellulaire de Montpellier (CRBM), Université de Montpellier, Centre National de la Recherche Scientifique, Montpellier, France.

One widespread technique to assess in relative terms the amount of broken DNA present in the genome of individual cells consists of immobilizing the cell's nucleus under an agarose pad (called the nucleoid) and subjecting the whole genome to electrophoresis to force broken DNA molecules out of it. Since the migrating broken DNA molecules create a tail behind the nucleoid, this technique is named the comet assay. While performing comet assays regularly, we systematically observed circular regions devoid of DNA within the nucleoid region.

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Pollinators help maintain functional landscapes and are sensitive to floral nutritional quality. Both proteins and lipids influence pollinator foraging, but the role of individual biochemical components in pollen remains unclear. We conducted an experiment comprising common garden plots of six plant species (Asteraceae, Rosaceae, Onagraceae, Boraginaceae, and Plantaginaceae).

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Chitosan, a multifaceted amino polysaccharide biopolymer derived from chitin, has extensive antibacterial efficacy against diverse pathogenic microorganisms, including both Gram-negative and Gram-positive bacteria, in addition to fungi. Over the course of the last several decades, chitosan nanoparticles (NPs), which are polymeric and bio-based, have garnered a great deal of interest as efficient antibacterial agents. This is mostly due to the fact that they are used in a wide variety of applications, including medical treatments, food, chemicals, and agricultural products.

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Background: Objective training load (TL) indexes used in resistance training lack physiological significance. This study was aimed to provide a muscle physiology-based approach for quantifying TL in resistance exercises (REs).

Methods: Following individual torque-velocity profiling, fifteen participants (11 healthy males, stature: 178.

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Central Asia, located at the heart of Eurasia, is renowned for its varied climate and vertical vegetative distribution, which support diverse biomes and position it as a global biodiversity hotspot. Despite this ecological richness, Central Asia's fungal diversity, particularly wood-inhabiting macrofungi, remains largely unexplored. This study investigates the diversity, ecological roles, and potential distribution of poroid Hymenochaetoid fungi in the region.

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Cardiac involvement in cancer is increasingly important in the diagnosis and follow-up of patients. A thorough cardiovascular evaluation using multimodal imaging is crucial to assess any direct cardiac involvement from oncological disease progression and to determine the cardiovascular risk of patients undergoing oncological therapies. Early detection of cardiac dysfunction, particularly due to cardiotoxicity from chemotherapy or radiotherapy, is essential to establish the disease's overall prognostic impact.

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Plant miRNAs for Improved Gene Regulation in a Wide Range of Human Cancers.

Curr Issues Mol Biol

January 2025

Centro Interdipartimentale di Medicina Comparata, Tecniche Alternative ed Acquacoltura, Interdepartmental Center for Comparative Medicine, Alternative Techniques, and Aquaculture, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy.

Determining the relationships between miRNA expression, target genes, and cancer development is critical to cancer research. The possibility of correlating miRNA expression with plant or artificial ones provides prerequisites for cancer treatment. Based on the broad database of human miRNA expression for all cancer types, we grade human miRNAs by their expression level.

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Polydatin-Induced Shift of Redox Balance and Its Anti-Cancer Impact on Human Osteosarcoma Cells.

Curr Issues Mol Biol

December 2024

Department of Clinical Sciences and Translational Medicine, University of Rome 'Tor Vergata', Via Montpellier 1, 00133 Rome, Italy.

Cancer cells demonstrate remarkable resilience by adapting to oxidative stress and undergoing metabolic reprogramming, making oxidative stress a critical target for cancer therapy. This study explores, for the first time, the redox-dependent anticancer effects of Polydatin (PD), a glucoside derivative of resveratrol, on the human Osteosarcoma (OS) cells SAOS-2 and U2OS. Using cell-based biochemical assays, we found that cytotoxic doses of PD (100-200 µM) promote ROS production, deplete glutathione (GSH), and elevate levels of both total iron and intracellular malondialdehyde (MDA), which are key markers of ferroptosis.

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Phosphorus (P) and potassium (K) play important roles in plant metabolism and hydraulic balance, respectively, while calcium (Ca) and magnesium (Mg) are important components of cell walls. Although significant amounts of these nutrients are found in wood, relatively little is known on how the wood concentrations of these nutrients are related to other wood traits, or on the factors driving the resorption of these nutrients within stems. We measured wood nutrient (i.

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•Defining the concept of "onco-functional" balance.•Detailing the clinical implications in brain tumor surgery.•Discussing the future of this philosophy.

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Introduction: Vasectomy is a widely used, safe, effective method of permanent contraception and contributes to healthy sexuality.

Aims: We have conducted a 3-step observational clinical study to develop a vasectomy regret risk score and guide patients and clinicians when discussing a vasectomy.

Methods: A 3-step approach has been followed.

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Emoquine-1: A Hybrid Molecule Efficient against Multidrug-Resistant Parasites, Including the Artemisinin-Resistant Quiescent Stage, and Also Active In Vivo.

J Med Chem

January 2025

Laboratoire de Chimie de Coordination du CNRS, LCC-CNRS, Inserm ERL 1289 MAAP, Université de Toulouse, 205 route de Narbonne, 31077 Toulouse cedex, France.

To challenge the multidrug resistance of malaria parasites, new hybrid compounds were synthesized and evaluated against laboratory strains and multidrug-resistant clinical isolates. Among these hybrids, emoquine-1 was the most active on proliferative , with IC values in the range of 20-55 nM and a high selectivity index with respect to mammalian cells. This drug retained its activity on several multiresistant field isolates from Cambodia and Guiana, exhibited no cross-resistance to artemisinin, and is also very active against the quiescent stage of the artemisinin-resistant parasites, three features that constitute the gold standard for new antimalarial drugs.

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Background: Recent proteomic studies have documented that Long COVID in adults is characterized by a pro-inflammatory signature with thromboinflammation. However, if similar events happen also in children with Long COVID has never been investigated.

Methods: We performed an extensive protein analysis of blood plasma from pediatric patients younger than 19 years of age Long COVID and a control group of children with acute COVID-19, MIS-C, and healthy controls resulted similar for sex distribution and age.

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Background: Uncertainty about optimal tranexamic acid (TXA) dosage has led to significant practice variation in hip arthroplasty. We aimed to identify the optimal i.v.

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Assessment of ischemia in mechanical small bowel obstruction: The time has come for dual-energy CT.

Diagn Interv Imaging

January 2025

Department of Medical Imaging, Lapeyronie University Hospital, 34295 Montpellier, France; Desbrest Institute of Epidemiology and Public Health (IDESP), Montpellier University, INSERM, 34000 Montpellier, France.

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Phenotypic Heterogeneity of ADTKD-MUC1 Diagnosed Using VNtyper, a Novel Genetic Technique.

Am J Kidney Dis

January 2025

Hereditary Kidney Diseases Laboratory, Inserm UMR 1163, Imagine Institute, Paris Cité University, Paris, France; Department of Genomic Medicine for Rare Diseases, Necker-Enfants Malades Hospital, Assistance publique, Hôpitaux de Paris (AP-HP), Paris, France. Electronic address:

Rationale & Objective: Molecular diagnosis of autosomal dominant tubulointerstitial kidney disease (ADTKD) due to variants in the MUC1 gene has long been challenging since variants lie in a large Variable Number of Tandem Repeat (VNTR) region, making identification impossible using standard short read techniques. Previously, we addressed this diagnostic limitation by developing a computational pipeline, named VNtyper, for easier reliable detection of MUC1 VNTR pathogenic variants from short read sequences. This led to unexpected diagnoses of ADTKD-MUC1 among patients with kidney disease referred for genetic testing, which we report here.

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This study investigates the effects of disintegrants sodium starch glycolate (SSG) and crospovidone (CP) on the printability, rheological properties, and disintegration time of agar and hydroxypropyl methylcellulose (HPMC)-based formulations designed for semi-solid extrusion. Printability was assessed by measuring the dimensional accuracy of manually extruded filaments. Rheological analysis was performed using oscillatory measurements.

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A health economic evaluation of the multinational, randomized controlled CONVINCE trial - cost-utility of high-dose online hemodiafiltration compared to high-flux hemodialysis.

Kidney Int

January 2025

Department of Epidemiology and Health Economics, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.

High-flux hemodialysis (HD) and high-dose hemodiafiltration (HDF) are established treatments for patients with kidney failure. Since HDF has been associated with improved survival rates compared to HD, we evaluated the cost-effectiveness of HDF compared to HD. Cost-utility analyses were performed from a societal perspective alongside the multinational randomized controlled CONVINCE trial.

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MIRRI-ERIC's position on the recent evolution of the international code of nomenclature of prokaryotes.

Syst Appl Microbiol

January 2025

Microbial Resource Research Infrastructure - European Research Infrastructure Consortium (MIRRI-ERIC), Braga, Portugal.

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