1,178 results match your criteria: "universites Paris-6 & 7[Affiliation]"

The bis-triazole ligand and its corresponding copper complexes were synthesized and characterized for the first time and proposed as new labels for the development of electrochemical aptasensors. The bis-triazole ligand was prepared from methyl 1,6-heptadiyne-4-carboxylate and 2-(azidomethyl)phenol using classical CuAAC in presence of different copper salts. The X-ray structure of bis-triazole showed a symmetry center (C1).

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Scope: Synthetic emulsifiers have recently been shown to promote metabolic syndrome and considerably alter gut microbiota. Yet, data are lacking regarding the effects of natural emulsifiers, such as plant lecithins rich in essential α-linolenic acid (ALA), on gut and metabolic health.

Methods And Results: For 5 days, male Swiss mice are fed diets containing similar amounts of ALA and 0, 1, 3, or 10% rapeseed lecithin (RL) or 10% soy lecithin (SL).

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Unraveling the features of somatic transposition in the Drosophila intestine.

EMBO J

May 2021

Institut Curie, CNRS, UMR 3215, INSERM U934, Stem Cells and Tissue Homeostasis Group, PSL Research University, Paris, France.

Transposable elements (TEs) play a significant role in evolution, contributing to genetic variation. However, TE mobilization in somatic cells is not well understood. Here, we address the prevalence of transposition in a somatic tissue, exploiting the Drosophila midgut as a model.

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Cryptochromes are blue light-absorbing photoreceptors found in plants and animals with many important signalling functions. These include control of plant growth, development, and the entrainment of the circadian clock. Plant cryptochromes have recently been implicated in adaptations to temperature variation, including temperature compensation of the circadian clock.

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Maize cultivators often use β-triketone herbicides to prevent the growth of weeds in their fields. These herbicides target the 4-HPPD enzyme of dicotyledons. This enzyme, encoded by the gene, is widespread among all living organisms including soil bacteria, which are considered as "non-target organisms" by the legislation.

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Enhancement of photocurrent by incorporation of Preyssler type polyoxometalate protected nanoparticles in polyporphyrin films.

Chem Commun (Camb)

February 2021

Université de Strasbourg, Institut de Chimie, UMR CNRS 7177, Laboratoire d'Electrochimie et de Chimie Physique du Corps Solide, 4 rue Blaise Pascal, CS 90032, Strasbourg cedex 67081, France.

The introduction of nanoparticles (MNPs) at the surface of cationic poly-porphyrin films, obtained by electrostatic interaction between the bis-porphyrin copolymer and the Preyssler type polyoxometalate P5W30@MNPs, enhances the photocurrent (up to 2.5-3 times greater as a function of the used nanoparticle).

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Advances in the identification of calcium carbonate urinary crystals.

Clin Chim Acta

April 2021

Sorbonne Universités, UPMC Université Paris-6, UMR S 1155, Paris, France; INSERM, UMR S 1155, Paris, France; AP-HP, Hôpital Tenon, Service d'explorations fonctionnelles multidisciplinaires, Paris-6, France.

The examination of the urinary sediment of a 64-year-old woman showed the presence of three different types of crystals, all with unusual morphology, which could not be identified with bright field microscopy, polarized light, and the knowledge of urine pH (7.5). The use of microscopic infrared spectroscopy, Raman spectroscopy and energy dispersive X-ray spectroscopy led to the identification of the three types of crystals as calcite, vaterite and aragonite, which are all variants of calcium carbonate crystals.

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Article Synopsis
  • Genome wide association studies (GWAS) have identified genomic loci related to cystic fibrosis (CF) lung disease, but only a small portion of the genetic influence is explained by these loci.
  • Researchers utilized expression data from CF cohorts and GTEx reference datasets to create predictive models that linked genetic variations with gene expression, discovering 379 candidate modifier genes associated with CF lung disease severity.
  • Among the 52 key candidates investigated, many are involved in CF-related biological processes, and notable genes such as HLA Class II and others near GWAS peak loci may serve as targets for future therapies.
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Rituximab plus belimumab in non-infectious refractory cryoglobulinemia vasculitis: A pilot study.

J Autoimmun

January 2021

Sorbonne Universités, AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Department of Internal Medicine and Clinical Immunology, F-75013, Paris, France; Centre national de références Maladies Autoimmunes et systémiques rares et Centre national de références Maladies Autoinflammatoires, UPMC Université Paris 6, INSERM, UMR S 959, Immunology-Immunopathology- Immunotherapy (I3), F-75005, Paris, France.

Objective: To report the efficacy of rituximab plus belimumab in patients with refractory cryoglobulinemia vasculitis (CV).

Methods: Belimumab was administered intravenously at a dose of 10 mg/kg on days 0, 14, 28 and then every month in association with rituximab in 4 patients with refractory CV. Demographic, clinical and laboratory characteristics, treatment modalities and outcomes were recorded.

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Lipid-Composition-Mediated Forces Can Stabilize Tubular Assemblies of I-BAR Proteins.

Biophys J

January 2021

Department of Chemistry, Chicago Center for Theoretical Chemistry, Institute for Biophysical Dynamics, The James Franck Institute, The University of Chicago, Chicago, Illinois. Electronic address:

Collective action by inverse-Bin/Amphiphysin/Rvs (I-BAR) domains drive micron-scale membrane remodeling. The macroscopic curvature sensing and generation behavior of I-BAR domains is well characterized, and computational models have suggested various mechanisms on simplified membrane systems, but there remain missing connections between the complex environment of the cell and the models proposed thus far. Here, we show a connection between the role of protein curvature and lipid clustering in the relaxation of large membrane deformations.

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Background/objectives: Cognitive decline associated with impaired kidney function might involve neurodegeneration. Our objectives were to evaluate the longitudinal association between kidney function and cognitive decline in older adults and to assess the involvement of cortical beta-amyloid and hippocampal atrophy (features of Alzheimer's disease (AD)) in this association.

Design: Secondary analysis of the randomized controlled Multidomain Alzheimer Preventive Trial (MAPT).

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For more than 10 years, gene therapy for neurological diseases has experienced intensive research growth and more recently therapeutic interventions for multiple indications. Beneficial results in several phase 1/2 clinical studies, together with improved vector technology have advanced gene therapy for the central nervous system (CNS) in a new era of development. Although most initial strategies have focused on orphan genetic diseases, such as lysosomal storage diseases, more complex and widespread conditions like Alzheimer's disease, Parkinson's disease, epilepsy, or chronic pain are increasingly targeted for gene therapy.

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We report a measurement of the energy spectrum of cosmic rays above 2.5×10^{18}  eV based on 215 030 events. New results are presented: at about 1.

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Lay people and experts' risk perception of pharmaceuticals in the environment in Southwestern Europe.

Regul Toxicol Pharmacol

November 2020

Université de Perpignan Via Domitia, Biocapteurs-Analyse-Environnement, 66860, Perpignan, France; Laboratoire de Biodiversité et Biotechnologies Microbiennes, USR 3579 Sorbonne Universités (UPMC) Paris 6 et CNRS Observatoire Océanologique, 66650, Banyuls-sur-Mer, France.

This study aims to contribute to the risk management of pharmaceuticals in the environment, illustrating risk perceptions of lay people and experts from Southwestern Europe (Portugal, Spain, and France). The psychometric paradigm was applied to assess risk regarding four hazards: pharmaceuticals in the environment (i.e.

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Background: The penetrance of leucine rich repeat kinase 2 (LRRK2) mutations is incomplete and may be influenced by environmental and/or other genetic factors. Nonsteroidal anti-inflammatory drugs (NSAIDs) are known to reduce inflammation and may lower Parkinson's disease (PD) risk, but their role in LRRK2-associated PD is unknown.

Objectives: The objective of this study is to evaluate the association of regular NSAID use and LRRK2-associated PD.

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Arabidopsis cryptochrome is responsive to Radiofrequency (RF) electromagnetic fields.

Sci Rep

July 2020

Department of Biomedical and Chemical Engineering and Science, Florida Institute of Technology, 150W University Blvd, Melbourne, Fl, 32901, USA.

How living systems respond to weak electromagnetic fields represents one of the major unsolved challenges in sensory biology. Recent evidence has implicated cryptochrome, an evolutionarily conserved flavoprotein receptor, in magnetic field responses of organisms ranging from plants to migratory birds. However, whether cryptochromes fulfill the criteria to function as biological magnetosensors remains to be established.

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High diagnostic value of plasma Niemann-Pick type C biomarkers in adults with selected neurological and/or psychiatric disorders.

J Neurol

November 2020

Neurology Department, Reference Center for Lysosomal Diseases, Neurogenetics and Metabolism Unit, Hôpital Pitié-Salpêtrière, 47-83 boulevard de l'Hôpital, 75013, Paris, France.

Late-onset Niemann-Pick type C (NP-C) is a rare, underdiagnosed lysosomal disease with neurological manifestations. A specific treatment, miglustat, can stabilize the disease if given early. Recently, three plasma screening biomarkers (PSBs) were developed [cholestane3β,5α,6βtriol (C-triol), 7-ketocholesterol (7-KC), and lysosphingomyelin-509 (LSM-509)], allowing a simpler and quite robust screening of patients suitable for genetic testing.

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Identifying Experts Reasoning in Antibiotic Treatment with Preference Learning.

Stud Health Technol Inform

June 2020

INSERM U1138 Team22 Information Science to Support Personalized Medicine, Paris.

The aim of this paper is to propose an approach based on preference learning for building a model that represents the closest possible experts reasoning to provide recommendations. We apply this method to antibiotherapy in primary care. The preference model was learned from the recommendations and from a database describing the domain.

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Gene Panel Sequencing Identifies Novel Pathogenic Mutations in Moroccan Patients with Familial Parkinson Disease.

J Mol Neurosci

January 2021

Neurology and Neurogenetics, Faculty of Medicine and Pharmacy, Genomics Center of Human Pathologies, University Mohammed V, Rabat, Morocco.

In the past two decades, genetic studies of familial forms of Parkinson's disease (PD) have shown evidence that PD has a significant genetic component. Indeed, 12 genes are strongly involved in PD causality, three of them having dominant inheritance and 9 causing early-onset autosomal recessive forms, including 3 with a typical PD and 6 with an atypical parkinsonism. The aim of this study was to determine the genetic basis of familial PD in Moroccan patients.

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Risk Factors and Prevention of Pneumocystis jirovecii Pneumonia in Patients With Autoimmune and Inflammatory Diseases.

Chest

December 2020

Department of Internal Medicine and Clinical Immunology, AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Paris, France; Centre national de références Maladies Autoimmunes systémiques rares et Centre national de références Maladies Autoinflammatoires et amylose inflammatoire; Immunology-Immunopathology-Immunotherapy (I3), Sorbonne Universités, UPMC Université Paris 6, INSERM, UMR S 959, Paris, France. Electronic address:

Patients with autoimmune and/or inflammatory diseases (AIIDs) are prone to serious infectious complications such as Pneumocystis jirovecii pneumonia (PJP). In non-HIV patients, the prognosis is poorer, and diagnostic tests are of lower sensitivity. Given the low incidence of PJP in AIIDs, with the exception of granulomatosis with polyangiitis, and the non-negligible side effects of chemoprophylaxis, routine prescription of primary prophylaxis is still debated.

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2020 Recommendations from the French Society of Rheumatology for the management of gout: Management of acute flares.

Joint Bone Spine

October 2020

Service de rhumatologie, hôpital Lariboisière, AP-HP, 2, rue Ambroise-Paré, 75010 Paris, France; Inserm U1132 BIOSCAR, université de Paris, Paris, France. Electronic address:

Objective: To develop French Society of Rheumatology-endorsed recommendations for the management of gout flares.

Methods: These evidence-based recommendations were developed by 9 rheumatologists (academic or community-based), 3 general practitioners, 1 cardiologist, 1 nephrologist and 1 patient, using a systematic literature search, one physical meeting to draft recommendations and 2 Delphi rounds to finalize them.

Results: A set of 4 overarching principles and 4 recommendations was elaborated.

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2020 recommendations from the French Society of Rheumatology for the management of gout: Urate-lowering therapy.

Joint Bone Spine

October 2020

Service de rhumatologie, hôpital Lariboisière, AP-HP, 2, rue Ambroise-Paré, 75010 Paris, France; Inserm U1132 BIOSCAR, université de Paris, Paris, France. Electronic address:

Objective: To develop French Society of Rheumatology-endorsed recommendations for the management of urate-lowering therapy (ULT).

Methods: Evidence-based recommendations were developed by 9 rheumatologists (academic or community-based), 3 general practitioners, 1 cardiologist, 1 nephrologist and 1 patient, using a systematic literature search, one physical meeting to draft recommendations and two Delphi rounds to finalize them.

Results: A set of 3 overarching principles and 5 recommendations was elaborated.

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Background: Lack of awareness of cognitive decline (ACD) has been described at the preclinical and prodromal stages of Alzheimer's disease (AD). In this study, we introduced a meta-memory ratio (MMR) and explored how it is associated with neuroimaging AD biomarkers in asymptomatic individuals at risk for AD.

Method: Four hundred forty-eight cognitively healthy participants from two cohorts of subjective memory complainers (INSIGHT-PreAD and ADNI) were included.

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Aims: Amoxicillin (AMX)-induced crystal nephropathy (AICN) is a rarely reported adverse drug reaction (ADR) but its increase has been recently reported in the Paris area. Our aim was to investigate the incidence, characteristics and outcome of AICN in France.

Methods: Retrospective analysis of all AICN cases reported to the French National Pharmacovigilance Database and the Marketing Authorization Holders Pharmacovigilance Database.

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A new congenital multicore titinopathy associated with fast myosin heavy chain deficiency.

Ann Clin Transl Neurol

May 2020

Laboratoire de Génétique Moléculaire, CHU de Montpellier, Montpellier, France.

Congenital titinopathies are myopathies with variable phenotypes and inheritance modes. Here, we fully characterized, using an integrated approach (deep phenotyping, muscle morphology, mRNA and protein evaluation in muscle biopsies), two siblings with congenital multicore myopathy harboring three TTN variants predicted to affect titin stability and titin-myosin interactions. Muscle biopsies showed multicores, type 1 fiber uniformity and sarcomeric structure disruption with some thick filament loss.

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