Publications by authors named "Larcher R"

Introduction: The increase in the population of immunocompromised patients due to advances in management of end-stage diseases and transplants poses challenges in treating infections caused by multi-drug resistant (MDR) pathogens. Cefiderocol (FDC), a siderophore cephalosporin, has shown efficacy against carbapenem-resistant Gram-negative bacteria.

Methods: This retrospective multicentre study investigated the real-world use of FDC in 114 immunocompromised adults treated for MDR infections in 12 French hospitals (June 2020-November 2023).

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Article Synopsis
  • Bone and joint infections (BJIs) from multidrug-resistant bacteria, like carbapenem-resistant Enterobacterales, are rising, highlighting the need for new treatment options.
  • Novel β-lactam/β-lactamase inhibitors, specifically imipenem/cilastatin/relebactam (I-R) and meropenem/vaborbactam (MVB), lack sufficient data on their effectiveness for BJIs, particularly with prolonged infusions.
  • A case study showed successful treatment of vertebral osteomyelitis using extended and continuous infusions of I-R and MVB, suggesting these methods could be effective against BJIs caused by resistant bacteria.
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  • The study aimed to analyze the characteristics and outcomes of critically ill patients with severe pneumonia caused by SARS-CoV-2 across different pandemic waves, focusing on morbidity and mortality predictors.
  • Conducted from March 2020 to October 2021, the study included 437 adult patients and found that ICU mortality decreased from 26% in the first wave to around 10% in later waves, with factors like age and comorbidities influencing death risk.
  • The research concluded that overall survival improved due to the effects of interventions like vaccination and dexamethasone, although bronchopulmonary aspergillosis increased mortality risk significantly to 36%.
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Hydric stress is a leading cause of atypical aging (ATA) in wine, characterized by unpleasant olfactory notes. The main sensorial and chemical marker of ATA is 2-aminoacetophenone (AAP). Early detection of ATA before the second fermentation in sparkling wines (SWs) is crucial for producing high-quality products.

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The Maillard reaction (MR) involves interactions between reducing sugars and amino acids or proteins during heating, producing Maillard reaction products (MRPs) that influence food flavour, aroma, and colour. Some MRPs exhibit antioxidant properties, prompting interest in their potential as natural food preservatives. This study aimed to develop a method for detecting and identifying antioxidant MRPs using high-pressure liquid chromatography (HPLC) coupled with high-resolution mass spectrometry (HRMS).

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  • Severe thrombotic antiphospholipid syndrome (APS) significantly affects critical organs and has not been thoroughly studied in ICU patients, particularly regarding hematological issues.
  • A retrospective study in France tracked 134 APS patients in ICUs, revealing high rates of anemia (95%) and thrombocytopenia (93%), with low platelet counts linked to increased mortality.
  • The findings highlight the importance of understanding the causes of thrombocytopenia in APS patients, as conditions like thrombotic microangiopathy (TMA), heparin-induced thrombocytopenia (HIT), and disseminated intravascular coagulation (DIC) are prevalent in this population.
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The aim of this work was to assess the effect of in vitro human digestion on the chemical composition (carbohydrates and phenolic compounds) and bioactivity of hydro-alcoholic-acid pomace extracts from two mandarin varieties (Clemenule and Ortanique) by measuring their antioxidant, antidiabetic, anti-glycative, hypolipidemic, and anti-inflammatory properties. The phenolic compound profile showed that nobiletin was the main flavonoid found in the extracts and digests of Clemenule pomace and extract, while isosinensetin/sinensetin/tangeretin were the ones in the Ortanique samples. The digests of Clemenule and Ortanique extracts showed Folin reaction values of 9.

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In this study, multiple analytical approaches, including simultaneous enantiomeric and isotopic analysis, were employed to thoroughly investigate the volatile fraction in Moscato giallo grape berries and wines. For the qualitative and quantitative profiling, a fast GC-QqQ/MS approach was successfully utilized. However, prior to isotopic analysis, the extracts underwent an additional concentration step, necessitating an assessment of isotopic fractionation during the concentration process.

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Among the grapes, is a winegrape variety characterised by a high content of free and glycosylated monoterpenoids, which gives wines very intense notes of ripe fruit and flowers. The aromatic bouquet of is strongly influenced by the high concentration of linalool, geraniol, linalool oxides, limonene, α-terpineol, citronellol, hotrienol, diendiols, -8-hydroxy linalool, geranic acid and myrcene, that give citrus, rose, and peach notes. Except for quali-quantitative analysis, no investigations regarding the isotopic values of the target volatile compounds in grapes and wines are documented in the literature.

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Global warming, heat waves, and seasonal drought pose serious threats to crops, such as grapevine, that are valued for their secondary metabolites, which are of primary importance for the wine industry. Discriminating the effects of distinct environmental factors in the open field is challenging. In the present study, cultured berries of Sauvignon Blanc were exposed to individual and combined stress factors to investigate the effects on the biosynthesis of the thiol precursors.

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The protein instability with haze formation represents one of the main faults occurring in white and rosé wines. Among the various solutions industrially proposed, aspergillopepsin I (AP-I) supplementation coupled with must heating (60-75 °C) has been recently approved by OIV and the European Commission for ensuring protein stability of wines. This study investigates the impact of AP-I either applied independently or in combination with flash pasteurization on the chemical composition of grape must and wines derived from Sauvignon Blanc and Gewürztraminer.

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Wheat-based products are staples in diets worldwide. Organic food frauds continuously threaten consumer trust in the agri-food system. A multi-method approach was conducted for the organic authentication and safety assessment of pasta and bakery products along their production chain.

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Atypical aging (ATA) is a well-known wine defect that leads to unacceptable off-odors of wet mop, soap, waxy, furniture varnish, and dish rag. The main compound that is responsible for these undesired scents, 2-aminoacetophenone (AAP), results from the oxidative degradation of 3-indole acetic acid. This study aimed to investigate different technological factors for a possible effect on the oxygen radical absorption capacity (ORAC) and ATA development in white wine.

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Complex matrices such as soil have a range of measurable characteristics, and thus data to describe them can be considered multidimensional. These characteristics can be strongly influenced by factors that introduce confounding effects that hinder analyses. Traditional statistical approaches lack the flexibility and granularity required to adequately evaluate such matrices, particularly those with large dataset of varying data types (i.

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The arsenic-specific ACR3 transporter plays pivotal roles in As detoxification in yeast and a group of ancient tracheophytes, the ferns. Despite putative ACR3 genes being present in the genomes of bryophytes, whether they have the same relevance also in this lineage is currently unknown. In this study, we characterized the MpACR3 gene from the bryophyte Marchantia polymorpha L.

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Traditional sparkling wine production is a lengthy and costly process, involving a double fermentation step and a period of aging ; thus, monitoring quality during the key manufacturing stages is crucial. The effects of the second fermentation on the development of 2-aminoacetophenone (AAP), the main marker of the atypical aging (ATA) defect, were investigated on 55 base wines (BWs) and corresponding sparkling wines (SWs) produced in an experimental winery. While the AAP content of the SWs was observed to be higher than the BWs, it was found that an artificial aging test carried out on the BWs could be a good predictor of ATA development in SWs.

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Objectives: The aim of this study was to determine, in critically ill patients treated with therapeutic plasma exchange (TPE), the incidence of adverse events as well as the incidence of secondary infections and its predictive factors.

Design: A multicenter retrospective cohort study of an intensive care population treated with TPE to collect adverse events and infectious complications. The characteristics of patients who developed an infection after plasma exchange were compared with those of patients who did not.

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Around 10% of critically ill patients suffer acute kidney injury (AKI) requiring kidney replacement therapy (KRT), with a mortality rate approaching 50%. Although most survivors achieve sufficient renal recovery to be weaned from KRT, there are no recognized guidelines on the optimal period for weaning from KRT. A systematic review was conducted using a peer-reviewed strategy, combining themes of KRT (intermittent hemodialysis, CKRT: continuous veno-venous hemo/dialysis/filtration/diafiltration, sustained low-efficiency dialysis/filtration), factors predictive of successful weaning (defined as a prolonged period without new KRT) and patient outcomes.

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Daptomycin (DAP) represents an interesting alternative to treat methicillin-resistant (MRSA) infections. Different mechanisms of DAP resistance have been described; however, in vivo-acquired resistance is uncharacterized. This study described the phenotypic and genotypic evolution of MRSA strains that became resistant to DAP in two unrelated patients with bacteremia under DAP treatment, in two hospitals in the South of France.

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Article Synopsis
  • Tubular injury is identified as the primary cause of acute kidney injury (AKI) in critically ill patients with COVID-19, with proximal tubular dysfunction (PTD) and specific urinary biomarkers potentially indicating AKI before it occurs.
  • A study analyzing 60 ICU COVID-19 patients revealed that 48% had PTD, 55% developed AKI, and 33% experienced persistent AKI, with urinary NGAL being the most effective biomarker for predicting these conditions.
  • The findings highlight that while PTD and AKI were common among patients, higher levels of the simplified acute physiology score (SAPSII) and certain medical treatments contributed significantly to the risk of AKI.
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Windstorms and salvage logging lead to huge soil disturbance in alpine spruce forests, potentially affecting soil-living arthropods. However, the impacts of forest loss and possible interactions with underlying ecological gradients on soil microarthropod communities remain little known, especially across different environmental conditions. Here we used DNA metabarcoding approach to study wind-induced disturbances on forest communities of springtails and soil mites.

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Backgroung: Antimicrobial resistance (AMR) is on the rise worldwide. Tools such as dynamic regression (DR) models can correlate antimicrobial consumption (AMC) with AMR and predict future trends to help implement antimicrobial stewardship programs (ASPs).

Main Body: We carried out a systematic review of the literature up to 2023/05/31, searching in PubMed, ScienceDirect and Web of Science.

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Cannabidiol (CBD) is a non-psychoactive cannabinoid of that exhibits several beneficial pharmacological effects, including anti-inflammatory and antioxidant properties. The molecule can be obtained via extraction from the plant or through a biosynthetic route. The two products have both advantages and disadvantages, thus necessitating the development of methods capable of distinguishing between the two products.

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