274 results match your criteria: "Universite de Paris-Saclay[Affiliation]"

Article Synopsis
  • Positive direct antiglobulin tests (DATs) were found in a study on post-artesunate delayed hemolysis (PADH), but the relationship between DAT positivity and PADH is not clear.
  • In a 7-year study of 337 severe malaria patients treated with artesunate, 54.3% of those who had DAT results experienced positive results, yet this did not correlate with the occurrence of PADH.
  • The findings suggest that DAT positivity is not a reliable marker for PADH and should not prompt the use of corticosteroids in treatment.
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Background: Hereditary transthyretin amyloidosis is a life-threatening autosomal dominant systemic disease due to pathogenic variants (ATTRv), mostly affecting the peripheral nerves and heart. The disease is characterised by a combination of symptoms, organ involvement and histological amyloid deposition. The available disease-modifying ATTRv treatments (DMTs) are more effective if initiated early.

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BCL2 robustly preserves mitochondrial integrity, hence inhibiting innate immune signaling and apoptotic cell death in several cell types. Here, we comment on our recent data demonstrating that BCL2 also limits the ability of dendritic cells to elicit adaptive immune responses, lending support to a universal immunosuppressive function for the mitochondrial immune checkpoint.

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Actionable autophagy checkpoints in cardiovascular ageing.

Eur Heart J

December 2023

Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Inserm U1138, Université Paris Cité, Sorbonne Université, 15 Rue de l'École de Médecine, 75006 Paris, France.

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A major challenge in modelling the decorporation of actinides (An), such as americium (Am), with DTPA (diethylenetriaminepentaacetic acid) is the fact that standard biokinetic models become inadequate for assessing radionuclide intake and estimating the resulting dose, as DTPA perturbs the regular biokinetics of the radionuclide. At present, most attempts existing in the literature are empirical and developed mainly for the interpretation of one or a limited number of specific incorporation cases. Recently, several approaches have been presented with the aim of developing a generic model, one of which reported the unperturbed biokinetics of plutonium (Pu), the chelation process and the behaviour of the chelated compound An-DTPA with a single model structure.

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[Nephroprotection: General principles and application to the patients with cancers - when nephroprotection is essential for oncological care plan].

Bull Cancer

July 2024

Assistance publique-Hôpitaux de Paris (AP-HP), centre hospitalier universitaire de Bicêtre, université de Paris-Saclay, service de néphrologie, dialyse et transplantation, Le Kremlin-Bicêtre, France.

Article Synopsis
  • * Cancer patients face unique risks of renal issues due to specific treatments and are often not adequately represented in nephroprotection studies, leading to gaps in current guidelines.
  • * The article emphasizes adapting nephroprotection strategies for cancer patients, focusing on education, managing comorbidities, and the need for collaboration between oncologists and nephrologists to develop the emerging field of onco-nephrology.
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Diagnosis and Management of Non-Infectious Uveitis in Pediatric Patients.

Paediatr Drugs

January 2024

Department of Pediatric Rheumatology, CeReMAIA, CHU Bicêtre, Assistance Publique-Hôpitaux de Paris, Université de Paris Saclay, 78 Rue du Général Leclerc, 94270 Le Kremlin-Bicêtre, Le Kremlin-Bicêtre, France.

Uveitis in children accounts for 5-10% of all cases. The causes vary considerably. Classically, uveitis is distinguished according to its infectious or inflammatory origin and whether it is part of a systemic disease or represents an isolated ocular disease.

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Article Synopsis
  • Scientists are trying to understand how certain immune cells, called lymphocytes, develop in our bodies.
  • They found that there are different paths these cells can take, and new types of cells called multi-lymphoid progenitors (MLPs) form before becoming either NK, ILC, T cells, or B cells.
  • The way these cells grow and develop is really different depending on the kind of immune cell they will become, and the scientists discovered new important steps and controls in this process.
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Our objective was to conduct a comprehensive analysis of the reproducibility of foot and ankle anthropometric measurements with a three-dimensional (3D) optical scanner. We evaluated thirty-nine different anthropometric parameters obtained with a 3D Laser UPOD-S Full-Foot Scanner in a healthy population of twenty subjects. We determined the variance of the measurements for each foot/ankle, and the average variance among different subjects.

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BCL2 Inhibition Reveals a Dendritic Cell-Specific Immune Checkpoint That Controls Tumor Immunosurveillance.

Cancer Discov

November 2023

Centre de Recherche des Cordeliers, Equipe Labellisée par la Ligue contre le Cancer, Université de Paris, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France.

Unlabelled: We developed a phenotypic screening platform for the functional exploration of dendritic cells (DC). Here, we report a genome-wide CRISPR screen that revealed BCL2 as an endogenous inhibitor of DC function. Knockout of BCL2 enhanced DC antigen presentation and activation as well as the capacity of DCs to control tumors and to synergize with PD-1 blockade.

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Article Synopsis
  • * Researchers used predictive tools to create a heatmap identifying which amino acid changes could lower the binding affinity of the antibody's peptides to HLA II molecules without affecting the antibody's ability to target its specific antigen.
  • * By applying this method to adalimumab, an antibody used for treating inflammatory conditions, the study produced 200 variants with reduced HLA binding scores and identified three that had improved affinity and neutralization capabilities compared to the original adalimumab.
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Protein regulator of cytokinesis 1: a potential oncogenic driver.

Mol Cancer

August 2023

Centre de Recherche des Cordeliers, Université Paris Cité, Sorbonne Université, Equipe labellisée par la Ligue contre le cancer, Inserm U1138, Paris, France.

Protein regulator of cytokinesis 1 (PRC1) is involved in cytokinesis. Growing evidence suggests the association of PRC1 with multiple cancers. Here, we unveil that, in 28 cancer types, PRC1 is higher expressed in tumor tissues than in non-malignant tissues.

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Integrated omics approach for the identification of HDL structure-function relationships in PCSK9-related familial hypercholesterolemia.

J Clin Lipidol

December 2023

Sorbonne Université, INSERM (Drs Darabi, Guillas, Frisdal, Poupel, Carrie,Bittar, Guerin, Le Goff, and Kontush), Institute of Cardiometabolism and Nutrition (ICAN), UMR_S1166, F-75013 Paris, France. Electronic address:

Background: The role of proprotein convertase subtilisin/kexin type 9 (PCSK9) in dyslipidemia may go beyond its immediate effects on low-density lipoprotein receptor (LDL-R) activity.

Objective: This study aimed to assess PCSK9-derived alterations of high-density lipoprotein (HDL) physiology, which bear a potential to contribute to cardiovascular risk profile.

Methods: HDL was isolated from 33 patients with familial autosomal dominant hypercholesterolemia (FH), including those carrying PCSK9 gain-of-function (GOF) genetic variants (FH-PCSK9, n = 11), together with two groups of dyslipidemic patients employed as controls and carrying genetic variants in the LDL-R not treated (ntFH-LDLR, n = 11) and treated (tFH-LDLR, n = 11) with statins, and 11 normolipidemic controls.

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Article Synopsis
  • * Results showed that patients receiving telemedicine had significantly fewer hospital days (7.1 days vs. 13.4 days) and lower healthcare costs (3471€ vs. 7185€) while maintaining similar wound healing and amputation rates.
  • * The study suggests that expert nurse-led telemonitoring can effectively cut hospitalization time and costs for DFU patients without compromising treatment outcomes.
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Article Synopsis
  • The study explores the link between various types of right ventricular (RV) involvement and mortality rates in ICU patients suffering from acute respiratory distress syndrome (ARDS) due to COVID-19.
  • Researchers analyzed data from the ECHO-COVID study, using echocardiograms to identify three RV phenotypes: acute cor pulmonale (ACP), RV failure (RVF), and RV dysfunction.
  • Findings revealed that 67% of patients had some form of RV involvement, with ACP being associated with significantly shorter survival times, indicating that different RV conditions have varying impacts on mortality in ICU settings.
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Article Synopsis
  • Current immunotherapies are mostly based on complex and costly recombinant proteins and cell-based methods, highlighting the need for new small molecule treatments to simplify manufacturing and logistics.
  • Researchers developed a miniature immune system to screen drug libraries, leading to the discovery of two promising compounds: astemizole, which activates T cells independently of dendritic cells, and ikarugamycin, which enhances dendritic cell function by inhibiting a key enzyme.
  • Both drugs showed improved anticancer effects when combined with the chemotherapy agent oxaliplatin, with astemizole also promoting a beneficial change in T cell ratios within tumors, suggesting potential for enhanced cancer treatment strategies.
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Acyl coenzyme A binding protein (ACBP): An aging- and disease-relevant "autophagy checkpoint".

Aging Cell

September 2023

Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue Contre le Cancer, Inserm U1138, Université Paris Cité, Sorbonne Université, Paris, France.

Acyl coenzyme A binding protein (ACBP), also known as diazepam-binding inhibitor (DBI), is a phylogenetically ancient protein present in some eubacteria and the entire eukaryotic radiation. In several eukaryotic phyla, ACBP/DBI transcends its intracellular function in fatty acid metabolism because it can be released into the extracellular space. This ACBP/DBI secretion usually occurs in response to nutrient scarcity through an autophagy-dependent pathway.

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Temperature-dependent experiments are a rapidly growing area of interest for low-field NMR. In this work, we present a new device for wide-range temperature control for single-sided NMR instruments. The presented device, called CAT, is simple to build, inexpensive, and easy to modify to accommodate different samples.

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Objectives: In this era of bacterial resistance, avoiding inappropriate use of antibiotic treatments is of major importance. Respiratory tract infections are frequent among older patients, and differentiating viral from bacterial infections is a challenge. The aim of our study was to evaluate the impact of recently available respiratory PCR testing on antimicrobial prescription in geriatric acute care.

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Tau is a protein characterized by large structural portions displaying extended conformational changes. Unfortunately, the accumulation of this protein into toxic aggregates in neuronal cells leads to a number of severe pathologies, collectively named tauopathies. In the last decade, significant research advancements were achieved, including a better understanding of Tau structures and their implication in different tauopathies.

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Changes in lymphocyte production patterns occurring across human ontogeny remain poorly defined. In this study, we demonstrate that human lymphopoiesis is supported by three waves of embryonic, fetal, and postnatal multi-lymphoid progenitors (MLPs) differing in CD7 and CD10 expression and their output of CD127 early lymphoid progenitors (ELPs). In addition, our results reveal that, like the fetal-to-adult switch in erythropoiesis, transition to postnatal life coincides with a shift from multilineage to B lineage-biased lymphopoiesis and an increase in production of CD127 ELPs, which persists until puberty.

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The ortho-isomer 2-furfural (2-FF), which is a primary atmospheric pollutant produced from biomass combustion, is also involved in oxidation processes leading to the formation of secondary organic aerosols. Its contribution to radiative forcing remains poorly understood. Thus, monitoring 2-FF directly in the atmosphere or in atmospheric simulation chambers to characterize its reactivity is merited.

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[Electrolyte disorders in oncological patients].

Bull Cancer

July 2024

Assistance publique-Hôpitaux de Paris (AP-HP), centre hospitalier universitaire de Bicêtre, université de Paris-Saclay, service de néphrologie, dialyse et transplantation, 94270 Le Kremlin-Bicêtre, France.

Electrolyte disorders (ED) are common in patients with cancer and in most cases, the etiologies do not differ from the general population. They may also be induced by the cancer, its therapy or paraneoplastic syndromes. ED are associated with poor outcomes, increased morbidity and mortality in this population.

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The annual "Antibody Industrial Symposium", co-organized by LabEx MAbImprove and MabDesign, held its 10th anniversary edition in Montpellier, France, on June 28-29, 2022. The meeting focused on new results and concepts in antibody engineering (naked, mono- or multi-specific, conjugated to drugs or radioelements) and also on new cell-based therapies, such as chimeric antigenic receptor (CAR)-T cells. The symposium, which brought together scientists from academia and industry, also addressed issues concerning the production of these molecules and cells, and the necessary steps to ensure a strong intellectual property protection of these new molecules and approaches.

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