Publications by authors named "Alain Lefevre-Utile"

Intra-abdominal and gastrointestinal mucormycosis are less frequent than rhino-orbito-cerebral and pulmonary mucormycosis, but highly lethal. Their diagnosis remains challenging due to the non-specific clinical presentation. We collected English-language cases of intra-abdominal and gastrointestinal mucormycosis in non-haematological and non-neonatal patients published up to October 2024.

View Article and Find Full Text PDF

Background: Kawasaki disease is an acute, febrile, systemic vasculitis of children that primarily affects medium-sized blood vessels with a tropism for the coronary arteries. Although the etiological factors remain unknown, infections have been suggested as the trigger of Kawasaki disease. We sought to calculate the fraction of Kawasaki disease potentially attributable to seasonal infections.

View Article and Find Full Text PDF
Article Synopsis
  • Infants under 3 months with fever often receive antibiotics, but this study focused on the prevalence of enterovirus in their cerebrospinal fluid (CSF) and its effect on treatment duration.
  • During the study from 2015 to 2018, 92 infants were analyzed; 41% tested positive for enterovirus, leading to a significant reduction in antibiotic treatment duration for those positive (1.9 days vs. 4.1 days for negatives).
  • The findings suggest that routine enterovirus RT-PCR testing could help minimize unnecessary antibiotic use in young febrile infants, even when standard CSF tests show no signs of infection.
View Article and Find Full Text PDF
Article Synopsis
  • The study investigates how mutations in the filaggrin (FLG) gene affect skin barrier function and its relationship with atopic dermatitis (AD), a condition characterized by inflammation and altered skin.
  • Researchers analyzed genetic, gene expression, and microbial data from AD patients with FLG mutations, compared to healthy controls, to understand the biological and microbial interactions occurring in the skin.
  • Findings revealed that FLG mutations lead to altered skin gene expression related to barrier dysfunction and inflammation, with specific bacteria (like S. aureus) influencing the skin's microbiome and highlighting 28 key genes linked to AD.
View Article and Find Full Text PDF
Article Synopsis
  • SARS-CoV-2, the virus responsible for COVID-19, continues to pose a global health threat, especially with the emergence of new variants that can evade immune responses.
  • Researchers used a method called ChIRP-MS to discover 107 proteins in human cells that interact with the SARS-CoV-2 genome during infection, identifying them as important factors in the virus's life cycle.
  • Among these, proteins like HNRNPA2B1, ILF3, QKI, and SFPQ were found to enhance viral RNA replication, providing potential targets for innovative antiviral treatments.
View Article and Find Full Text PDF

The epidermis is a living, multilayered barrier with five functional levels, including a physical, a chemical, a microbial, a neuronal, and an immune level. Altogether, this complex organ contributes to protect the host from external aggression and to preserve its integrity. In this review, we focused on the different functional aspects.

View Article and Find Full Text PDF
Article Synopsis
  • Atopic dermatitis (AD) is a common and complex skin condition, and understanding it better for personalized treatments is still a challenge despite advances in research.* -
  • A research team used an unsupervised method on a large dataset of skin biopsies to identify 222 specific genes related to AD, which helped them classify the samples into 4 distinct groups based on disease characteristics and severity.* -
  • The findings revealed different biological pathways associated with each group, suggesting new approaches for tailored treatment strategies in managing atopic dermatitis.*
View Article and Find Full Text PDF

Multiple sclerosis (MS) is one of the most common autoimmune diseases which is commonly diagnosed and monitored using magnetic resonance imaging (MRI) with a combination of clinical manifestations. The purpose of this review is to highlight the main applications of Machine Learning (ML) models and their performance in the MS field using MRI. We reviewed the articles of the last decade and grouped them based on the applications of ML in MS using MRI data into four categories: 1) Automated diagnosis of MS, 2) Prediction of MS disease progression, 3) Differentiation of MS stages, 4) Differentiation of MS from similar disorders.

View Article and Find Full Text PDF

A time series analysis of 871 543 pediatric emergency visits revealed that the coronavirus disease 2019 (COVID-19) lockdown and school closures were associated with a significant decrease in infectious diseases disseminated through airborne or fecal-oral transmission: common cold, gastroenteritis, bronchiolitis, and acute otitis. No change was found for urinary tract infections.

View Article and Find Full Text PDF

Primary infection with varicella-zoster virus (VZV) causes chickenpox, a benign and self-limited disease in healthy children. In patients with primary or acquired immunodeficiencies, primary infection can be life-threatening, due to rapid dissemination of the virus to various organs [lung, gastrointestinal tract, liver, eye, central nervous system (CNS)]. We retrospectively described and compared the clinical presentations and outcomes of disseminated varicella infection (DV) in patients with acquired (AID) (= 7) and primary (PID) (= 12) immunodeficiencies.

View Article and Find Full Text PDF

Background: To identify deprivation indicators usable in everyday practice and included in medico-administrative databases, particularly with infectious diseases, which represent the greatest proportion of hospitalizations. Our objective was to compare ecological indicators to individual questionnaires and apply both types to the study of the impact of deprivation on hospital efficiency.

Methods: We conducted an epidemiological observational prospective multicentre study in two French public hospitals between 20 October 2016 and 20 March 2017.

View Article and Find Full Text PDF

Heterozygous in-frame mutations in coding regions of human underlie the only known autosomal dominant form of hyper IgE syndrome (AD HIES). About 5% of familial cases remain unexplained. The mutant proteins are loss-of-function and dominant-negative when tested following overproduction in recipient cells.

View Article and Find Full Text PDF

Vaccination against measles, mumps, and rubella (MMR) and yellow fever (YF) with live attenuated viruses can rarely cause life-threatening disease. Severe illness by MMR vaccines can be caused by inborn errors of type I and/or III interferon (IFN) immunity (mutations in , , or ). Adverse reactions to the YF vaccine have remained unexplained.

View Article and Find Full Text PDF
Article Synopsis
  • - The study investigates isolated congenital asplenia (ICA), a rare condition affecting the lymphoid organ, linked to mutations in the ribosomal protein SA gene, with a significant number of cases showing a connection to protein-coding mutations and some affecting mRNA splicing.
  • - New research identified 11 additional mutations in the ribosomal protein SA gene and revealed that a majority of the studied kindreds (41%) and over half of patients (55%) have mutations that can lead to ICA.
  • - Notably, the study highlights the variable expressiveness of these mutations, with some demonstrating incomplete penetrance, suggesting that not all individuals with mutations will develop symptoms of ICA.
View Article and Find Full Text PDF

Chromosome 7 germline macrodeletions have been implicated in human congenital malformations and developmental delays. We herein report a novel heterozygous macrodeletion of 7q34-q36.3 in a 16-year-old girl originally from West Indies.

View Article and Find Full Text PDF

The BRAF mutation is reported in half of patients with Langerhans cell histiocytosis (LCH). This study investigated the detection of the BRAF allele in circulating cell-free (ccf) DNA in a paediatric LCH cohort. Children with BRAF -mutated LCH were investigated to detect ccf BRAF at diagnosis (n = 48) and during follow-up (n = 17) using a picolitre-droplet digital PCR assay.

View Article and Find Full Text PDF

Background: Chronic granulomatous disease (CGD) is a primary immunodeficiency caused by defective production of reactive oxygen species in phagocytic cells that results in life-threatening infections and severe inflammatory manifestations. The treatment of inflammatory manifestations remains challenging because it can be associated with an increased risk of infections. Previous studies have shown that phagocytes from patients with CGD display a defect in autophagy and a reactive oxygen species-independent activation of the inflammasome.

View Article and Find Full Text PDF

Still's disease (Systemic-onset Juvenile Idiopathic Arthritis: SoJIA) is characterised by high-spiking daily fevers, arthritis and evanescent rashes. Diagnosis of Still's disease is often challenging. Infectious diseases and other inflammatory conditions, especially in young children, Kawasaki disease may look similar.

View Article and Find Full Text PDF