0000000000315636
AUTHOR
Boualem Sendid
Détection d’un disaccharide (MSDS) par spectrométrie de masse. Analyse multicentrique de son intérêt pour le diagnostic des infections fongiques invasives
Introduction Nous avons recemment decrit une methode utilisant la spectrometrie de masse MALDI-TOF pour detecter, identifier et quantifier un disaccharide (MSDS) dont la presence dans le serum est associee aux infections fongiques invasives (IFI). Nos premieres investigations, portant sur des cas de candidoses et d’aspergilloses invasives (IC et IA) recrutes dans notre CHU, ont montre que les performances diagnostiques de cette methode etaient comparables a celles des tests Platelia™ et Fungitell ® et qu’en outre elle permettait de diagnostiquer les mucormycoses (MM) pour lesquelles ces tests serologiques sont en defaut. Cette etude a comme objectif de confirmer ces resultats de maniere mul…
Impact of domestic mould exposure on Aspergillus biomarkers and lung function in patients with chronic obstructive pulmonary disease
International audience; Patients with chronic obstructive pulmonary disease (COPD) are frequently colonised or sensitised by Aspergillus, but clinical significance remains unclear. Furthermore, little is known on the impact of indoor mould exposure during COPD. In this study, we assessed the relationship between domestic mould exposure, Aspergillus biomarkers and COPD severity during acute exacerbation and at stable state. Aspergillus section Fumigati culture in sputum and anti-Aspergillus antibodies detection (IgG and precipitins) were followed up in COPD patients that were prospectively recruited during exacerbation (n = 62), and underwent a visit at stable state after 18 months (n = 33).…
Emergence of Aspergillus fumigatus azole resistance in azole-naïve patients with chronic obstructive pulmonary disease and their homes.
Azole-resistant Aspergillus fumigatus (ARAF) has been reported in patients with chronic obstructive pulmonary disease (COPD) but has not been specifically assessed so far. Here, we evaluated ARAF prevalence in azole-naïve COPD patients and their homes, and assessed whether CYP51A mutations were similar in clinical and environmental reservoirs. Sixty respiratory samples from 41 COPD patients with acute exacerbation and environmental samples from 36 of these patient's homes were prospectively collected. A. fumigatus was detected in respiratory samples from 11 of 41 patients (27%) and in 15 of 36 domiciles (42%). Cyp51A sequencing and selection on itraconazole medium of clinical (n = 68) and e…
Impact de l’exposition domestique aux moisissures sur le risque de colonisation ou sensibilisation par Aspergillus fumigatus des patients atteints de BPCO
Objectif Les patients atteints de BPCO sont frequemment colonises par Aspergillus fumigatus (49–87 %) et a risque de developper des formes invasives d’aspergillose dont la mortalite est importante et l’incidence (environ 2 %) probablement sous-estimee. Afin de mieux comprendre le role de l’exposition environnementale aux moisissures dans ces infections, nous avons caracterise la flore fongique domiciliaire de patients atteints de BPCO et evalue son impact sur le risque de colonisation et sensibilisation fongiques par A. fumigatus . Methodes Soixante-deux patients ont ete prospectivement recrutes au CHRU de Lille entre aout 2011 et novembre 2015. La flore fongique domiciliaire a ete caracter…