BACKGROUND: Achromobacter xylosoxidans infection may cause conspicuous chronic pulmonary inflammation in cystic fibrosis (CF) patients similar to Pseudomonas aeruginosa and the Burkholderia cepacia complex (Bcc). Evolution in lung function was compared in chronically infected patients. Cytokine concentrations in CF patients with and without chronic infection were compared to healthy controls. METHODS: Cytokines in serum and sputum were measured using multiplex bead based immunoassay. RESULTS: Sixty CF patients, 11 with A. xylosoxidans, 11 with Bcc, 21 with P. aeruginosa and 17 non-infected CF patients were compared to 11 healthy controls. A. xylosoxidans patients were younger, but had a FEV(1) decline similar to P. aeruginosa patients. Bcc patients had the steepest decline in FEV(1). Serum levels of G-CSF, IL-6 and TNF-alpha were significantly higher in CF patients compared to healthy controls. Chronically infected CF patients had significantly higher serum levels of IFN-gamma and IL-6 compared to non-infected CF patients. Bcc patients had significantly lower serum G-CSF and A. xylosoxidans patients had significantly higher sputum TNF-alpha compared to the other groups of chronically infected patients. CONCLUSION: A. xylosoxidans can cause a level of inflammation similar to P. aeruginosa in chronically infected CF patients. A. xylosoxidans is a clinically important pathogen in CF and should be treated accordingly.
BACKGROUND:Achromobacter xylosoxidansinfection may cause conspicuous chronic pulmonary inflammation in cystic fibrosis (CF) patients similar to Pseudomonas aeruginosa and the Burkholderia cepacia complex (Bcc). Evolution in lung function was compared in chronically infectedpatients. Cytokine concentrations in CFpatients with and without chronic infection were compared to healthy controls. METHODS: Cytokines in serum and sputum were measured using multiplex bead based immunoassay. RESULTS: Sixty CFpatients, 11 with A. xylosoxidans, 11 with Bcc, 21 with P. aeruginosa and 17 non-infected CFpatients were compared to 11 healthy controls. A. xylosoxidanspatients were younger, but had a FEV(1) decline similar to P. aeruginosapatients. Bcc patients had the steepest decline in FEV(1). Serum levels of G-CSF, IL-6 and TNF-alpha were significantly higher in CFpatients compared to healthy controls. Chronically infectedCFpatients had significantly higher serum levels of IFN-gamma and IL-6 compared to non-infected CFpatients. Bcc patients had significantly lower serum G-CSF and A. xylosoxidanspatients had significantly higher sputum TNF-alpha compared to the other groups of chronically infectedpatients. CONCLUSION:A. xylosoxidans can cause a level of inflammation similar to P. aeruginosa in chronically infected CFpatients. A. xylosoxidans is a clinically important pathogen in CF and should be treated accordingly.
Authors: Adam M Pickrum; Orlando DeLeon; Aaron Dirck; Maxx H Tessmer; Molly O Riegert; Julie A Biller; Nathan A Ledeboer; John R Kirby; Dara W Frank Journal: Infect Immun Date: 2020-06-22 Impact factor: 3.441
Authors: B D Edwards; J Greysson-Wong; R Somayaji; B Waddell; F J Whelan; D G Storey; H R Rabin; M G Surette; M D Parkins Journal: J Clin Microbiol Date: 2017-04-26 Impact factor: 5.948
Authors: Kasper N Kragh; Morten Alhede; Peter Ø Jensen; Claus Moser; Thomas Scheike; Carsten S Jacobsen; Steen Seier Poulsen; Steffen Robert Eickhardt-Sørensen; Hannah Trøstrup; Lars Christoffersen; Hans-Petter Hougen; Lars F Rickelt; Michael Kühl; Niels Høiby; Thomas Bjarnsholt Journal: Infect Immun Date: 2014-08-11 Impact factor: 3.441