Publications by authors named "Guiraud J"

Carbapenem-resistant Pseudomonas aeruginosa is a global public health concern. IMP-13 is a carbapenemase that was described for the first time in 2001 but is often underestimated due to poor hydrolysis of carbapenems and a lack of molecular detection. The aim of this study was to characterize the genetic support of bla in P.

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Accurate identification of non-tuberculous mycobacterial (NTM) species is crucial for the diagnosis and appropriate management of NTM infections. This study aimed to evaluate the performance of two assays, FluoroType Mycobacteria VER 1.0 and Maldi BioTyper (MBT) Mycobacteria.

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Alcohol dependence (AD) significantly impacts public health, affecting 3.4% of people aged 18-64 and contributing to around 12% of overall mortality. Individuals with AD have a markedly reduced life expectancy, dying up to 28 years earlier than the general population.

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Unlabelled: Antimicrobial susceptibility testing (AST) of human mycoplasmas using microdilution is time-consuming. In this study, we compared the performance of MICRONAUT-S plates (Biocentric-Bruker) designed for AST of , , and with the results using the Clinical & Laboratory Standards Institute (CLSI) reference method. Then, we investigated the prevalence and mechanisms of resistance to tetracyclines, fluoroquinolones, and macrolides in France in 2020 and 2021.

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  • Researchers examined the effects of combining prazosin (α1b blocker) and cyproheptadine (5HT2A blocker) on alcohol consumption in individuals with Alcohol Use Disorder (AUD).
  • The study involved 154 participants in France, who were divided into three groups for a 3-month trial: low-dose, high-dose, and placebo.
  • Results indicated a significant reduction in total alcohol consumption (TAC) for both the low and high-dose groups compared to the placebo, suggesting that this combination therapy is effective and safe for decreasing alcohol intake.
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New approaches for the treatment of alcohol dependence (AD) may improve patient outcomes. Substitution maintenance therapy is one of the most effective treatment options for opioid and nicotine use disorders. So far, there has been little attention to substitution therapy for the treatment of AD.

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Alcohol is a major cause of pre-mature death and individual suffering worldwide, and the importance of diagnosing and treating AUD cannot be overstated. Given the global burden and the high attributable factor of alcohol in a vast number of diseases, the need for additional interventions and the development of new medicines is considered a priority by the World Health Organization (WHO). As of today, AUD is severely under-treated with a treatment gap nearing 90%, strikingly higher than that for other psychiatric disorders.

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The pathogenicity of is poorly understood, mainly due to the absence of efficient genetic tools. A polyethylene glycol-mediated transformation protocol was recently developed for the reference strain M132 using the pMT85-Tet plasmid. The transformation efficiency remained low, hampering generation of a large mutant library.

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  • Lumacaftor-ivacaftor is a CFTR modulator combination effective for cystic fibrosis patients with the F508del allele, showing improvement in clinical outcomes like body mass index and fewer antibiotic courses.
  • A study involving 75 patients analyzed changes in airway microbiota, mycobiota, and inflammation markers before and after 6 months of treatment; overall, no significant changes in microbial diversity or inflammation were found.
  • However, patients not chronically colonized with Pseudomonas aeruginosa showed decreased inflammation and increased bacterial diversity, suggesting individual patient characteristics influence treatment outcomes.
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Aims: The estimated effect of sodium oxybate (SMO) in the treatment of alcohol dependence is heterogeneous. Population severity and treatment duration have been identified as potential effect modifiers. Population severity distinguishes heavy drinking patients with <14 days of abstinence before treatment initiation (high-severity population) from other patients (mild-severity population).

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  • A multicenter study in France from 2018 to 2020 examined the prevalence of macrolide and fluoroquinolone resistance mutations in patients.
  • In metropolitan France, macrolide resistance was found in 34.7% to 42.9% of cases, significantly higher in men compared to women, whereas in overseas France, it was only 6.1% to 14.7%.
  • The study concluded that metropolitan France has a notably high prevalence of these mutations compared to overseas regions, with a marked gender disparity in macrolide resistance.
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The high prevalence of macrolide resistance in Mycoplasma genitalium results in an increased reliance on moxifloxacin, the second-line treatment; however, moxifloxacin resistance has also emerged. Because assays that can detect fluoroquinolone resistance-associated mutations will be useful for the management of macrolide-resistant M. genitalium infections, we evaluated the performance of three commercial assays (the Allplex MG & MoxiR Assay [Seegene], LightMix Modular parC kit [TIBMOLBIOL], and MGMO qPCR [NYtor) in comparison with gene Sanger sequencing used as the reference.

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Mycoplasma genitalium causes sexually transmitted infecti.ons in men and women. Treatment failures to macrolides and fluoroquinolones have been reported worldwide.

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Background: Sodium oxybate (SMO) has been shown to be effective in the maintenance of abstinence (MoA) in alcohol-dependent patients in a series of small randomized controlled trials (RCTs). These results needed to be confirmed by a large trial investigating the treatment effect and its sustainability after medication discontinuation.

Aims: To confirm the SMO effect on (sustained) MoA in detoxified alcohol-dependent patients.

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Background: There is considerable unexplained variability in alcohol abstinence rates (AR) in the placebo groups of randomized controlled trials (RCTs) for alcohol dependence (AD). This is of particular interest because placebo responses correlate negatively with treatment effect size. Recent evidence suggests that the placebo response is lower in very heavy drinkers who show no "spontaneous improvement" prior to treatment initiation (high-severity population) than in a mild-severity population and in studies with longer treatment duration.

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Article Synopsis
  • - Sodium oxybate (SMO) has been approved in some European countries for helping individuals with alcohol dependence maintain abstinence, although there are concerns about potential misuse outside of its intended use.
  • - A phase IIb clinical trial tested a new formulation of SMO on 509 alcohol-dependent patients with varying severity of dependence, observing an unexpectedly high response to placebo.
  • - While the main goal of increasing days abstinent wasn't achieved for all patients, there were significant positive results for those with severe dependence, suggesting that future studies should focus on baseline severity when evaluating SMO's effectiveness.
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  • The study explored the prevalence of Mycoplasma genitalium and its antibiotic resistance among men attending STI clinics, particularly focusing on men who have sex with men (MSM).
  • Researchers analyzed 95 samples and identified 38 distinct genetic types, revealing high rates of macrolide resistance, especially among MSM compared to heterosexual men.
  • The findings suggest that specific genetic types of resistant strains may spread more easily in sexual networks, indicating a complex relationship between resistance and sexual behavior in high-risk populations.
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Dysregulation of cortical excitation/inhibition (E/I) has been proposed as a neuropathological mechanism underlying core symptoms of autism spectrum disorder (ASD). Determining whether dysregulated E/I could contribute to the emergence of behavioural symptoms of ASD requires evidence from human infants prior to diagnosis. In this prospective longitudinal study, we examine differences in neural responses to auditory repetition in infants later diagnosed with ASD.

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Women and men with alcohol dependence and very high risk drinking level (VHRDL; defined as drinking >60 or 100 g of ethanol per day, respectively) experience severe health consequences; however, data on the number of these individuals and their health risks are limited. This study estimated (1) the prevalence of VHRDL in 13 European Union (EU) countries among people 15-65 years of age, (2) the risk of disease and injury occurrence associated with VHRDL, (3) the proportion of deaths in nine EU countries attributable to VHRDL and (4) the life expectancy of people in France with VHRDL. Prevalence estimates of VHRDL were based on data obtained from clinical trials and the Global Information System on Alcohol and Health.

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In plants, the shikimate pathway provides aromatic amino acids that are used to generate numerous secondary metabolites, including phenolic compounds. In this pathway, shikimate dehydrogenases (SDH) 'classically' catalyse the reversible dehydrogenation of 3-dehydroshikimate to shikimate. The capacity of SDH to produce gallic acid from shikimate pathway metabolites has not been studied in depth.

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Perceptual training is generally assumed to improve perception by modifying the encoding or decoding of sensory information. However, this assumption is incompatible with recent demonstrations that transfer of learning can be enhanced by across-trial variation of training stimuli or task. Here we present three lines of evidence from healthy adults in support of the idea that the enhanced transfer of auditory discrimination learning is mediated by working memory (WM).

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  • Flavonoids, particularly proanthocyanidins (PAs), are important compounds in grapes that affect the quality of fruit and wine, yet their regulatory mechanisms are not well understood.
  • The study identified 21 expression quantitative trait loci (eQTLs) related to PA synthesis genes, revealing a polygenic regulatory mechanism behind their biosynthesis.
  • A specific gene, VvMYBC2-L1, was highlighted for its role in regulating PA production, as its overexpression decreased PA levels and down-regulated PA-related genes.
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Perceptual decision making is prone to errors, especially near threshold. Physiological, behavioural and modeling studies suggest this is due to the intrinsic or 'internal' noise in neural systems, which derives from a mixture of bottom-up and top-down sources. We show here that internal noise can form the basis of perceptual decision making when the external signal lacks the required information for the decision.

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