Pseudomonas aeruginosa lasR mutants are associated with cystic fibrosis lung disease progression

نویسندگان
چکیده

منابع مشابه

Growth phenotypes of Pseudomonas aeruginosa lasR mutants adapted to the airways of cystic fibrosis patients.

The opportunistic pathogen Pseudomonas aeruginosa undergoes genetic change during chronic airway infection of cystic fibrosis (CF) patients. One common change is a mutation inactivating lasR, which encodes a transcriptional regulator that responds to a homoserine lactone signal to activate expression of acute virulence factors. Colonies of lasR mutants visibly accumulated the iridescent interce...

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Cystic fibrosis–adapted Pseudomonas aeruginosa quorum sensing lasR mutants cause hyperinflammatory responses

Cystic fibrosis lung disease is characterized by chronic airway infections with the opportunistic pathogen Pseudomonas aeruginosa and severe neutrophilic pulmonary inflammation. P. aeruginosa undergoes extensive genetic adaptation to the cystic fibrosis (CF) lung environment, and adaptive mutations in the quorum sensing regulator gene lasR commonly arise. We sought to define how mutations in la...

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Longitudinal development of mucoid Pseudomonas aeruginosa infection and lung disease progression in children with cystic fibrosis.

CONTEXT Although Pseudomonas aeruginosa is the most common virulent respiratory pathogen in cystic fibrosis (CF), the longitudinal development of P aeruginosa infection and its effect on antibody responses and lung disease progression in children with CF remain unclear. OBJECTIVE To prospectively examine the epidemiology of P aeruginosa infection and its impact on CF pulmonary morbidity. DE...

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Pseudomonas aeruginosa in patients without cystic fibrosis is strongly associated with chronic obstructive lung disease.

INTRODUCTION The objective of this study was to investigate the occurrence and consequences of Pseudomonas aeruginosa infection in a group of non-cystic fibrosis (CF) patients with regard to clinical presentation, treatment and change in lung function. MATERIAL AND METHODS This was a three-year retrospective study of 113 patients with P. aeruginosa-positive airway samples achieved from the De...

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Early-Life Pseudomonas aeruginosa Infection in Cystic Fibrosis and Lung Disease Progression

Lung disease in cystic fibrosis (CF) starts early, with studies identifying abnormalities on chest computed tomography (CT) scan even in infancy. In this retrospective study, abnormal chest CT was the main outcome; body mass index (BMI) z score and forced expiratory volume percent predicted (FEV1%) predicted at age 6 to 7 years were secondary outcomes. Pseudomonas aeruginosa infection prior to ...

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ژورنال

عنوان ژورنال: Journal of Cystic Fibrosis

سال: 2009

ISSN: 1569-1993

DOI: 10.1016/j.jcf.2008.09.006