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Volume 304:1445-1449 June 11, 1981 Number 24 Next

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Abstract

Patients with cystic fibrosis commonly harbor in their lungs strains of Pseudomonas aeruginosa that have a mucoid coating considered virtually pathognomonic for the disease. We found that strains of Escherichia coli with a morphologically similar mucoid coating were present in the respiratory tracts of eight (11.8 per cent) of 68 patients with cystic fibrosis whose sputum cultures yielded Esch. coli, as compared with none of 89 patients without cystic fibrosis who had Esch. coli in sputum. Mucoid strains of Esch. coli were also recovered from the stools of five (11.1 per cent) of 45 patients with cystic fibrosis, as compared with one (0.7 per cent) of 150 patients without cystic fibrosis. The mucoid substances purified from Esch. coli were biochemically and antigenically distinct from those of P. aeruginosa. We conclude that the respiratory tract in cystic fibrosis offers an environment conducive to the production of a mucoid coating not only by P. aeruginosa but by other gram-negative bacilli as well.

This article has been cited by other articles:

• Kelly, H. W., Lovato, C. (2006). Antibiotic Use in Cystic Fibrosis. The Annals of Pharmacotherapy 40: 1424-1435 [Full Text]