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Induced sputum nitrites correlate with FEV 1 in children with cystic fibrosis
Author(s) -
Anil N,
Singh M,
Rajwanshi A,
Vohra H.
Publication year - 2010
Publication title -
acta pædiatrica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 115
eISSN - 1651-2227
pISSN - 0803-5253
DOI - 10.1111/j.1651-2227.2010.01682.x
Subject(s) - medicine , sputum , cystic fibrosis , white blood cell , spirometry , gastroenterology , nitrite , lung function , immunology , lung , asthma , pathology , tuberculosis , nitrate , ecology , biology
Aim: To determine the difference in the levels of nitrites in induced sputum of children with cystic fibrosis (CF) and controls. Furthermore, to evaluate the association between induced sputum nitrites and lung function in children with CF. Methods: Nitrites, cell differentials, white blood cell count, were estimated in induced sputum of 20 children with CF and 10 age‐matched healthy controls. Nitrites in induced sputum samples were measured using the Greiss assay. Lung function was ascertained by spirometry. Results: We observed high levels of nitrites in CF (184.8 ± 11.07 μM/L) versus controls (56.4 ± 5.7 μM/L) (p < 0.01). A positive correlation between neturophil percent and nitrites, white blood cell count and nitrites (p < 0.05) in children with CF was observed. Sputum nitrites correlated negatively with FEV 1 (p < 0.05) in children with CF. Conclusion: Induced sputum nitrite could serve as a useful non invasive marker for assessing the degree of inflammation in the airways of children with CF.