508 results match your criteria: "Associé à l'Université Pierre et Marie Curie[Affiliation]"

Guanidinium Substitution Improves Self-Healing and Photodamage Resilience of MAPbI.

J Phys Chem C Nanomater Interfaces

November 2024

Dept. of Molecular Chem. & Materials Science, Weizmann Institute of Science, Rehovot 7610001, Israel.

Self-healing materials can become game changers for developing sustainable (opto)electronics. APbX halide (=X) perovskites, HaPs, have shown a remarkable ability to self-heal damage. While we demonstrated self-healing in pure HaP compounds, in single crystals, and in polycrystalline thin films (as used in most devices), HaP compositions with multiple A (and X) constituents are preferred for solar cells.

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DNA is commonly known as the "molecule of life" because it holds the genetic instructions for all living organisms on Earth. The utilization of modified nucleosides holds the potential to transform the management of a wide range of human illnesses. Modified nucleosides and their role directly led to the 2023 Nobel prize.

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Allogeneic hematopoietic stem cell transplantation (HSCT) is the only established curative option for Fanconi anemia (FA)-associated bone marrow failure (BMF)/aplastic anemia (AA) and acute myeloid leukemia (AML)/myelodysplastic syndrome (MDS). We performed a retrospective multicenter study on 813 children with FA undergoing first HSCT between 2010 and 2018. Median duration of follow-up was 3.

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Elucidating a new path of CSF transport in the CNS.

Lancet Neurol

June 2024

Department of Neurology, Yale School of Medicine, New Haven, CT 06519, USA; Paris Brain Institute, Université Pierre et Marie Curie Paris 06 UMRS1127, Sorbonne Université, Paris, France.

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The NFKBIE gene, which encodes the NF-κB inhibitor IκBε, is mutated in 3-7% of patients with chronic lymphocytic leukemia (CLL). The most recurrent alteration is a 4-bp frameshift deletion associated with NF-κB activation in leukemic B cells and poor clinical outcome. To study the functional consequences of NFKBIE gene inactivation, both in vitro and in vivo, we engineered CLL B cells and CLL-prone mice to stably down-regulate NFKBIE expression and investigated its role in controlling NF-κB activity and disease expansion.

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Genetic Predictors of the Development of Complications after Coronary Stenting.

J Pers Med

December 2022

Cancer Biology and Therapeutics, Centre de Recherche Saint-Antoine, Institut National de la Santé et de la Recherche Médicale, INSERM U938 and Faculté de Médecine Pierre et Marie Curie (UPMC), Sorbonne Universities, 75006 Paris, France.

Due to the fact that there are scientific discussions about the significance of gene polymorphisms in the risk of developing cardiovascular complications after a percutaneous coronary intervention, it is of interest to evaluate the genetic predictors of the development of cardiovascular events. This study is a molecular genetic study. Association with the genes of biomarkers for inflammation and immune response increases the risk of cardiovascular events: rs1234313 (TNFSF4): (A/G, OR-4.

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Molecular and clinical diversity in primary central nervous system lymphoma.

Ann Oncol

February 2023

Institut du Cerveau-Paris Brain Institute-ICM, Inserm, Sorbonne Université, CNRS, Paris, France; Department of Neurology-2, Sorbonne Université, Assistance Publique-Hôpitaux de Paris, Groupe Hospitalier Pitié-Salpêtrière-Charles Foix, Paris, France. Electronic address:

Article Synopsis
  • Primary central nervous system lymphoma (PCNSL) is a unique type of diffuse large B-cell lymphoma that shows varied response rates likely due to its molecular complexity.
  • A detailed analysis of 147 fresh-frozen and 93 formalin-fixed PCNSLs identified four significant prognostic clusters, with distinct clinical behaviors and genetic profiles.
  • The findings suggest targeted therapeutic approaches for each PCNSL subtype, including immune checkpoint inhibitors and various targeted drugs based on their specific molecular characteristics.
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Early-Stage Contactin-Associated Protein-like 2 Limbic Encephalitis: Clues for Diagnosis.

Neurol Neuroimmunol Neuroinflamm

January 2023

From the French Reference Center on Paraneoplastic Neurological Syndromes and Autoimmune Encephalitis (J.B., S.M.-C., A.V., A.F., A.-L.P., G.P., V.R., J.H., B.J.), Hospices Civils de Lyon; Synaptopathies and Autoantibodies (SynatAc) Team (J.B., S.M.-C., A.V., A.F., A.-L.P., G.P., V.R., J.H., B.J.), Institut NeuroMyoGène, MELIS, INSERM U1314/CNRS UMR 5284, Université Claude Bernard Lyon 1; Epileptology-EEG Department (J.B.), Neurology, Pasteur2 Hospital, University Hospitals of Nice; Côte d'Azur University (J.B.), UR2CA, URRIS, Pasteur2 Hospital, University Hospitals of Nice; Department of Functional Neurology and Epileptology (D.G., S.R.), Hospices Civils de Lyon, France; European Network for Rare and Complex Epilepsies (EPICARE) (D.G., S.R.); Service de Neurologie 2-Mazarin (A.A., D.P.), Hôpitaux Universitaires La Pitié-Salpêtrière-Charles Foix, APHP; Inserm U1127 CNRS UMR 7225 (A.A., D.P.), Institut Du Cerveau et de la Moelle épinière, ICM, Université Pierre-et-Marie-Curie, Sorbonne Universités, Paris; and Lyon's Neuroscience Research Center (S.R.), INSERM U1028/CNRS UMR 5292; Université Lyon 1 Claude Bernard, France.

Background And Objectives: Previous studies suggested that autoimmune limbic encephalitis with antibodies against contactin-associated protein-like 2 (CASPR2-encephalitis) is clinically heterogeneous and progresses slowly, preventing its early recognition. We aimed to describe the onset and progression of CASPR2-encephalitis and to assess long-term outcomes.

Methods: We retrospectively analyzed the medical records of all patients whose CSF tested positive for anti-CASPR2 antibodies in our center between 2006 and 2020.

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Enzymatic and Molecular Characterization of Anti- Molecules That Differently Target and Mammalian eIF4A Proteins, LieIF4A and eIF4A.

Molecules

September 2022

Laboratory of Molecular Epidemiology and Experimental Pathology (LR11IPT04/LR16IPT04)/Laboratory of Epidemiology and Ecology of Parasites, Institut Pasteur de Tunis-University Tunis El Manar, Tunis 1002, Tunisia.

Previous investigations of the eIF4A-like protein (LieIF4A) as a potential drug target delivered cholestanol derivatives inhibitors. Here, we investigated the mode of action of cholesterol derivatives as a novel scaffold structure of LieIF4A inhibitors on the RNA-dependent ATPase activity of LieIF4A and its mammalian ortholog (eIF4AI). We compared their biochemical effects on RNA-dependent ATPase activities of both proteins and investigated if rocaglamide, a known inhibitor of eIF4A, could affect LieIF4A as well.

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Objective: This study aimed to assess if quantitative diffusion magnetic resonance imaging analysis would improve prognostication of individual patients with severe traumatic brain injury.

Methods: We analyzed images of 30 healthy controls to extract normal fractional anisotropy ranges along 18 white-matter tracts. Then, we analyzed images of 33 patients, compared their fractional anisotropy values with normal ranges extracted from controls, and computed severity of injury to white-matter tracts.

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The properties of dialdehyde celluloses, which are usually generated by periodate oxidation, are highly dependent on the aldehyde content, i.e. the degree of oxidation (DO).

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Thrombin Generation Profile in Various Lymphoma Sub-Groups and Its Augmentation by Andexanet Alfa.

Clin Appl Thromb Hemost

July 2021

Department of Pathology and Laboratory Medicine and Department of Pharmacology and Neuroscience, Cardiovascular Research Institute, Hemostasis and Thrombosis Research Division, Loyola University Chicago, Health Sciences Division, Maywood, IL, USA.

The prevalence of thrombosis in lymphoma patients is reportedly high and ranges from 3-10%. Vascular malfunction and inflammatory processes further contribute to the thrombotic activation process in these patients. Andexanet alfa (AA) is an antidote for factor Xa inhibitors and its usage has been reported with thrombotic complications.

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We compared transplant outcomes of 708 acute myeloid leukemia (AML) patients receiving haploidentical allogeneic hematopoietic-cell transplantation using thiotepa/busulfan/fludarabine (TBF) conditioning with posttransplant cyclophosphamide (ptCy), to 2083 patients receiving matched unrelated donor (MUD) transplantation using fludarabine/busulfan (FB) conditioning and in vivo T-cell depletion. For intermediate cytogenetic risk AML transplanted in first complete remission (CR1), multivariate analysis revealed that haplo-TBF significantly increased nonrelapse mortality (NRM) (HR 2.1; p = 0.

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The assessment of value along the clinical development of new biopharmaceutical compounds is a challenging task. Complex and uncertain evidence has to be analyzed, considering a multitude of value preferences from different stakeholders. To investigate the use of multicriteria decision analysis (MCDA) to support decision making during drug development while considering payer and health technology assessment (HTA) value concerns, by applying the Advance Value Framework in nonalcoholic steatohepatitis (NASH) and testing for the consistency of the results.

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Background: Tamoxifen citrate is a very prevalent drug marketed under several trade names like Apo-Tamox, Nolvadex, Tamec, Tamizam, and Tamoplex. This molecule is approved by the FDA for breast cancer treatment. Some studies have shown that tamoxifen has anti-tuberculosis and antiparasitic activities.

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A novel 2-fluorodeoxyglucose conjugated derivative of paclitaxel was efficiently synthesized using a linker between 2'-OH of paclitaxel and C1-hydroxyl group of 2-fluorodeoxyglucose. In preparation of the prodrug, allyl carbonates were selected as the protective group and the efficient one-step removal of allyloxycarbonyl groups at the end of the synthesis using palladium chemistry gave the target molecule in good yield. The prodrug not only improved the pharmaceutical properties of paclitaxel, such as solubility and stability, but also demonstrated enhanced cytotoxicity and selectivity for cancer cells and less toxicity toward normal HUVEC cells.

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Intrascrotal injection of botulinum toxin A, a male genital aesthetic demand: Technique and limits.

Prog Urol

May 2020

Plastic surgery Department, Tenon Hospital, Assistance Publique-Hôpitaux de Paris, 4, rue de la Chine, 75020 Paris, France; Paris VI, Sorbonne University, Pierre et Marie Curie Campus, 4, place Jussieu, 75005 Paris, France.

Introduction: Scrotal rejuvenation is a real male aesthetic demand. Scrotal injection of botulinum toxin makes the testicles smoother, less dangling and subjectively larger.

Methods: Intrascrotal botulinum toxin injections were performed to a 44-year-old patient for aesthetic purposes.

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Topical rapamycin versus betamethasone dipropionate ointment for treating oral erosive lichen planus: a randomized, double-blind, controlled study.

J Eur Acad Dermatol Venereol

October 2020

Department of Dermatology and Allergology, Hospital Tenon, Université Paris VI Pierre et Marie Curie, Sorbonnes Universités, Paris, France.

Background: Although superpotent topical corticosteroids are the first-line treatment for oral erosive lichen planus (OELP), topical rapamycin was found efficient in a previous case series.

Objectives: To compare the efficacy and safety of topical rapamycin and betamethasone dipropionate ointment for OELP in a randomized, double-blind trial.

Methods: Patients were randomized to receive treatment with betamethasone dipropionate ointment 0.

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Effects of Management Strategies on Non-Beak-Trimmed Laying Hens in Furnished Cages that Were Reared in a Non-Cage System.

Animals (Basel)

February 2020

Epidemiology, Health and Welfare Unit, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), 22440 Ploufragan, France.

Beak trimming in laying hens limits the negative consequences of injurious pecking, but could be prohibited by future regulations. This study assessed a combination of management strategies during the rearing period (objects, perches, music, human presence) and laying period (scratching mats, objects, feed fiber supplementation) to raise non-beak-trimmed animals. The welfare and laying performances of beak-trimmed (T) and non-beak-trimmed (NT) ISA Brown birds were compared between groups with (E) or without (NE) these strategies, with or without fiber supplementation in the diet during laying period.

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There is experimental evidence that the astaxanthin, betanin, and epigallocatechin-3-gallate (EGCG) compounds slow down the aggregation kinetics and the toxicity of the amyloid-β (Aβ) peptide. How these inhibitors affect the self-assembly at the atomic level remains elusive. To address this issue, we have performed for each ligand atomistic replica exchange molecular dynamic (REMD) simulations in an explicit solvent of the Aβ trimer from the U-shape conformation and MD simulations starting from Aβ dimer and tetramer structures characterized by different intra- and interpeptide conformations.

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Three fluoropyrimidine-based regimens in routine clinical practice after nab-paclitaxel plus gemcitabine for metastatic pancreatic cancer: An AGEO multicenter study.

Clin Res Hepatol Gastroenterol

June 2020

Department of Gastroenterology and Digestive Oncology, Georges-Pompidou European Hospital, Assistance publique-Hôpitaux de Paris (AP-HP), Sorbonne Paris Cité Paris Descartes University, Paris, France.

Background: A combination of nab-paclitaxel plus gemcitabine (N+G) has recently become a standard first-line treatment in patients with metastatic pancreatic adenocarcinoma (MPA), but there are currently no published data concerning second-line treatment after N+G. The aim of this study was to evaluate the survival outcomes and tolerability of three usual fluoropyrimidine-based regimens FOLFOX, FOLFIRI and FOLFIRINOX after N+G failure in MPA patients.

Methods: Patients receiving N+G as first-line regimen were prospectively identified in 11 French centers between January 2014 and January 2017.

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Sustained Type I interferon signaling as a mechanism of resistance to PD-1 blockade.

Cell Res

October 2019

INSERM U1015, Gustave Roussy, 114 rue Edouard Vaillant, 94805, Villejuif Cedex, France.

PD-1 blockade represents a major therapeutic avenue in anticancer immunotherapy. Delineating mechanisms of secondary resistance to this strategy is increasingly important. Here, we identified the deleterious role of signaling via the type I interferon (IFN) receptor in tumor and antigen presenting cells, that induced the expression of nitric oxide synthase 2 (NOS2), associated with intratumor accumulation of regulatory T cells (Treg) and myeloid cells and acquired resistance to anti-PD-1 monoclonal antibody (mAb).

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Background: Fabry disease (OMIM 301500) is an X-linked disorder caused by alpha-galactosidase A (α-Gal A) deficiency. The administration of a pharmacologic chaperone (migalastat) in Fabry patients with amenable mutations has been reported to improve or stabilize organ damages and reduce lyso-Gb3 plasma level. An increase of α-Gal A activity has been observed in vitro in cells expressing amenable GLA mutations when incubated with migalastat.

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Oxidation-Sensitive Polymersomes Based on Amphiphilic Diblock Copolypeptoids.

Biomacromolecules

September 2019

Chimie ParisTech, PSL University Paris, CNRS, Institut de Recherche de Chimie Paris, UMR8247 , 11 rue Pierre et Marie Curie , 75005 Paris , France.

Stimuli-responsive polymersomes formed by amphiphilic block copolymers have attracted substantial attention as smart and robust containers for drug delivery and nano/microreactors. Biosourced amphiphilic diblock copolypeptoids were developed that can self-assemble into oxidation-responsive unilamellar vesicles. These vesicles can burst under the action of reactive oxygen species which can be the hydrogen peroxide or the singlet oxygen produced by light-activation of a photosensitizer with spatiotemporal control.

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Combined nutritional stress and a new systemic pesticide (flupyradifurone, Sivanto®) reduce bee survival, food consumption, flight success, and thermoregulation.

Chemosphere

December 2019

University of California, San Diego, Division of Biological Sciences, Section of Ecology, Behavior, and Evolution, 9500 Gilman Drive, MC0116, La Jolla, CA, 92093-0116, USA; Epidemiology Unit, European Union Reference Laboratory (EURL) for Honeybee Health, University Paris Est, ANSES (French Agency for Food, Environmental and Occupational Health and Safety) Animal Health Laboratory, 14 rue Pierre et Marie Curie, F94701 Maisons-Alfort, France. Electronic address:

Flupyradifurone (FPF, Sivanto®) is a new butenolide insecticide that, like the neonicotinoids, is a systemic nicotinic acetylcholine receptor (nAChR) agonist. However, FPF is considered bee-safe (according to standard Risk Assessment tests), and is thus a potential solution to the adverse effects of other pesticides on beneficial insects. To date, no studies have examined the impact of nutritional stress (decreased food diversity and quality) and FPF exposure on bee health although both stressors can occur, especially around agricultural monocultures.

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