0000000000330733
AUTHOR
Philippe Gosset
Factors associated with Pneumocystis colonization and circulating genotypes in chronic obstructive pulmonary disease patients with acute exacerbation or at stable state and their homes
Abstract Pneumocystis jirovecii colonization is frequent during chronic obstructive pulmonary disease (COPD) and patients constitute potential contributors to its interhuman circulation. However, the existence of an environmental reservoir cannot be excluded. We assessed the prevalence and factors associated with Pneumocystis colonization during COPD, and studied circulation between patients and their domestic environment. Pneumocystis molecular detection and mtLSU genotyping were performed in oro-pharyngeal washes (OPW) sampled in 58 patients with COPD acute exacerbation, and in indoor dust, sampled in patients’ homes using electrostatic dust collectors (EDCs). Lung and systemic inflammati…
Tonnerre de Brest ! Des Journées de Recherche Respiratoires 2020 pas comme les autres…
International audience; Tentons un peu d’oublier l’année 2020, mais pas complètement . . . C’est une année qui nousaura conduits à des envies et des visions différentes. Les rencontres conviviales et bien-veillantes qui ponctuent nos journées chaque année au mois d’octobre depuis 2005 n’ontpu se dérouler comme prévues, mais nous étions tous présents pour les 16esJournées deRecherche Respiratoire (J2R) le 16 octobre 2020, bien que devant nos écrans !Nous y avons cru jusqu’au bout et pensions pouvoir bénéficier de la fin de la fenêtreestivale, le programme était prêt et nos hôtes Brestois (nous ne remercierons jamais assezles équipes des Prs Francis Couturaud et Christophe Leroyer) avaient pe…
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…