Publications by authors named "Denis M"

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  • - A novel method for creating substituted pyridines from iodoenones is introduced, using a two-step process that includes Sonogashira coupling with a free alkyne.
  • - The process involves a sequence of chemical reactions, including thiophenol treatment and a Michael-retro-Michael process, leading to the final pyridine structure.
  • - This technique allows for the incorporation of various substituents at different positions on the pyridine ring, expanding possibilities for synthesizing bioactive heterocycles.
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  • HSCT is a potentially curative treatment for blood and immune diseases but often involves harmful chemotherapy or radiation, leading to serious side effects like infections and secondary cancers.
  • Research has shown that using targeted monoclonal antibodies (mAbs) against αCD117 can offer a safer alternative for HSCT preparations, with promising results in SCID mouse models.
  • The study identifies that the ACK2 mAb effectively inhibits HSC proliferation and enhances engraftment after HSCT, and when combined with the αCD47 mAb, it significantly improves outcomes in wildtype mouse models.
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Raw milk is considered a high-risk source of Campylobacter due to faecal contamination from healthy cattle and farm environments, thus linking raw milk consumption to global outbreaks. Detection of Campylobacter in raw milk poses challenges due to low contamination levels and antibacterial properties of the milk. Culture-based protocols for Campylobacter detection in milk vary, mainly with regard to pH adjustment and the choice of enrichment broth.

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miRNAs constitute fine-tuners of gene expression and are implicated in a variety of diseases spanning from inflammation to cancer. miRNA expression is deregulated in rheumatoid arthritis (RA); however, their specific role in key arthritogenic cells such as the synovial fibroblast (SF) remains elusive. Previous studies have shown that expression is upregulated in RA SFs.

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  • Acute and chronic anal fissures are common health issues that lead to significant discomfort and frequent doctor visits; therefore, evidence-based treatment guidelines are crucial.
  • A Delphi consensus method was used to review existing literature and create a set of statements regarding the treatment options for anal fissures, finalized by January 2023.
  • The guidelines emphasize that both men and women are equally affected, conservative treatments should be tried first, and surgical options like lateral internal sphincterotomy and fissurectomy can be considered if conservative methods fail.
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This study reports a botulism outbreak on a pig farm. Clostridium botulinum type C was detected using PCR. The gene encoding the toxin corresponds to a novel type C neurotoxin recently described in a human botulism outbreak, raising the question of its prevalence in pigs and the related risks to humans.

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Non-coding RNAs (ncRNAs) are important regulators of gene expression. They are expressed not only in cells, but also in cell-derived extracellular vesicles (EVs). The mechanisms controlling their loading and sorting remain poorly understood.

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In intensive care units, COVID-19 viral pneumonia patients (VPP) present symptoms similar to those of other patients with Nonviral infection (NV-ICU). To better manage VPP, it is therefore interesting to better understand the molecular pathophysiology of viral pneumonia and to search for biomarkers that may clarify the diagnosis. The secretome being a set of proteins secreted by cells in response to stimuli represents an opportunity to discover new biomarkers.

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  • Advanced non-small cell lung cancer (NSCLC) patients with high PD-L1 expression (≥ 50%) who are treated with osimertinib showed significantly shorter progression-free survival (PFS) and overall survival (OS) compared to those with lower expression levels, indicating PD-L1 as a negative prognostic factor.
  • The study analyzed the effects of PD-L1 expression on survival outcomes in 96 newly diagnosed patients with EGFR mutations receiving osimertinib, with a focus on data collected from May 2018 to November 2022.
  • Key findings reveal that higher PD-L1 expression, along with poor performance status and uncommon EGFR mutations, were associated with worse survival outcomes, highlighting the need for careful
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Targeted therapies are the standard first-line treatment for metastatic lung adenocarcinoma with certain molecular abnormalities. These abnormalities are particularly common in Southeast Asia and French Polynesia. A 51-year-old Tahitian female non-smoker was diagnosed in 2018 with stage IV lung adenocarcinoma harboring a p.

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Background: Dietary intake and metabolism variations are associated with molecular changes and more particularly in the transcriptome. O-GlcNAcylation is a post-translational modification added and removed respectively by OGT and OGA. The UDP-GlcNAc, the substrate of OGT, is produced by UAP1 and UAP1L1.

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Anaesthetics are used daily in human and veterinary medicine as well as in scientific research. Anaesthetics have an impact on cell homeostasis especially through modulation of protein post-translational modifications. O-GlcNAcylation, a ubiquitous post-translational modification, plays a role in many biological processes.

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  • * Male Wistar Han rats were used to induce hemorrhagic shock through controlled blood loss, followed by a phase of low blood pressure, and then treatment with intravenous fluids to mimic patient care.
  • * Results showed significant decreases in blood pressure and increases in organ damage markers, establishing this model as a useful tool for further research on potential treatments for hemorrhagic shock.
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Background: Lung cancers represent the main cause of cancer related-death worldwide. Recently, immunotherapy alone or in combination with chemotherapy has deeply impacted the therapeutic care leading to an improved overall survival. However, relapse will finally occur, with no efficient second line treatment so far.

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Anti-CD117 monoclonal antibody (mAb) agents have emerged as exciting alternative conditioning strategies to traditional genotoxic irradiation or chemotherapy for both allogeneic and autologous gene-modified hematopoietic stem cell transplantation. Furthermore, these agents are concurrently being explored in the treatment of mast cell disorders. Despite promising results in animal models and more recently in patients, the short- and long-term effects of these treatments have not been fully explored.

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Neurofeedback is a brain-computer interface tool enabling the user to self-regulate their neuronal activity, and ultimately, induce long-term brain plasticity, making it an interesting instrument to cure brain disorders. Although this method has been used successfully in the past as an adjunctive therapy in drug-resistant epilepsy, this approach remains under-explored and deserves more rigorous scientific inquiry. In this review, we present early neurofeedback protocols employed in epilepsy and provide a critical overview of the main clinical studies.

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Conventional therapies for inflammatory bowel diseases are mainly based on systemic treatments which cause side effects and toxicity over long-term administration. Nanoparticles appear as a valid alternative to allow a preferential accumulation in inflamed tissues following oral administration while reducing systemic drug exposure. To increase their residence time in the inflamed intestine, the nanoparticles are here associated with a hydrogel matrix.

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Objective: Interleukin-23 (IL-23) is a crucial cytokine implicated in chronic inflammation and autoimmunity, associated with various diseases such as psoriasis, psoriatic arthritis, and systemic lupus erythematosus (SLE). This study aimed to create and characterize a transgenic mouse model overexpressing human IL-23A (TghIL-23A), providing a valuable tool for investigating the pathogenic role of human IL-23A and evaluating the efficacy of anti-human IL-23A therapeutics.

Methods: TghIL-23A mice were generated via microinjection of CBA × C57BL/6 zygotes with a fragment of the human IL23A gene, flanked by its 5'-regulatory sequences and the 3' untranslated region of human β-globin.

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Fibroblasts are key regulators of inflammation, fibrosis, and cancer. Targeting their activation in these complex diseases has emerged as a novel strategy to restore tissue homeostasis. Here, we present a multidisciplinary lead discovery approach to identify and optimize small molecule inhibitors of pathogenic fibroblast activation.

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The facultative intracellular bacterium Listeria monocytogenes (L. monocytogenes) is the causative agent of listeriosis, a severe invasive illness. This ubiquitous species is widely distributed in the environment, but infection occurs almost exclusively through ingestion of contaminated food.

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Avian influenza viruses (AIV), including the H9N2 subtype, pose a major threat to the poultry industry as well as to human health. Although vaccination provides a protective control measure, its effect on transmission remains uncertain in chickens. The objective of the present study was to investigate the efficacy of beta-propiolactone (BPL) whole inactivated H9N2 virus (WIV) vaccine either alone or in combination with CpG ODN 2007 (CpG), poly(I:C) or AddaVax™ (ADD) to prevent H9N2 AIV transmission in chickens.

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Background: The prognostic impact of TP53 mutations in advanced or metastatic nonsquamous non-small-cell lung cancer (nsNSCLC) patients treated with chemotherapy and/or immune checkpoint inhibitors (ICI) remains unclear.

Materials And Methods: We retrospectively collected data from patients with nsNSCLC treated in the first line from January 2018 to May 2021. The patient was separated into 2 groups according to their TP53 mutation status (wt vs.

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Raman microscopy can reveal a compound-specific vibrational "fingerprint" from micrograms of material with no sample preparation. We expect this increasingly available instrumentation to routinely assist synthetic chemists in structure determination; however, interpreting the information-dense spectra can be challenging for unreported compounds. Appropriate theoretical calculations using the highly efficient rSCAN-3c method can accurately predict peak positions but are less precise in matching peak heights.

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