Systemic oxidative stress in children with cystic fibrosis with bacterial infection including Pseudomonas Aeruginosa.

Introduction: Oxidative stress (OS) occurs in cystic fibrosis (CF).

Objective: The objective of this work is to evaluate the influence of bacterial infection on biomarkers of OS (catalase [CAT], glutathione peroxidade [GPx], reduced glutathione [GSH]), markers of oxidative damage (protein carbonyls [PC], thiobarbituric acid reactive substances [TBARS]), together with the nutritional status and lung function in children with CF.

Methods: Cross-sectional study including CF group (CFG, n = 55) and control group (CG, n = 31), median age: 3.

Influence of inflammatory response, infection, and pulmonary function in cystic fibrosis.

Aims: Recurrent infections and activation of the inflammatory response affect the prognosis of cystic fibrosis (CF). We investigated the relationship between inflammatory response, infection, and pulmonary function in CF.

Main Methods: A clinical-cross-sectional study was conducted with 86 subjects: control group (CG, n=31, the same age and sex of the CF group), and CF group (CFG, n=55, age: 1-16 years), further distributed into CFG negative or positive bacteriology (CFGB(-)/CFGB(+)), and CFG negative or positive Pseudomonas aeruginosa (CFGPa(-)/CFGPa(+)).