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125I-Clq-binding and specific antibodies as indicators of pulmonary disease activity in cystic fibrosis

125I-Clq-binding and specific antibodies as indicators of pulmonary disease activity in cystic fibrosis

Journal of Pediatrics 29(2): 215-222

We studied the incidence and levels of circulating immune complexes by the 125I-Clq-binding assay in patients with cystic fibrosis in relation to clinical respiratory status and specific IgG and IgE antibodies to Pseudomonas aeruginosa. Staphylococcus aureus, Aspergillus fumigatus, and Candida albicans. Overall prevalence of CIC was 43%, but 86% of serially studied patients had evidence of CIC at some time. Patients with acute respiratory exacerbations and deteriorating pulmonary function had a higher incidence of CIC (76%) as compared to stable patients (36%, P less than 0.01), as well as significantly higher levels of CIC. Acute exacerbations were also associated with significant increases in IgG antibody to Pseudomonas (P less than 0.005) but not in other antibodies. CIC did not correlate with Pseudomonas-specific IgG nor with any other specific antibody studied. A variety of age-related differences in specific antibody levels were seen. The episodic appearance of CIC is common in CF and is usually associated with exacerbation of lung disease.

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Accession: 000803272

Download citation: RISBibTeXText

PMID: 7252678

DOI: 10.1016/s0022-3476(81)80453-2

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