Home General Physiology and Biophysics 2011 General Physiology and Biophysics Vol.30, No.4, p.373–378, 2011

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Founded: 1982
ISSN 1338-4325 (online)
ISSN 0231-5882 (print)
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General Physiology and Biophysics Vol.30, No.4, p.373–378, 2011

Title: Study of the effect of DNA polymorphisms in the mannose-binding lectin gene (MBL2) on disease severity in Slovak cystic fibrosis patients
Author: Eva Tothova Tarova, Helena Polakova, Hana Kayserova, Peter Celec, Maria Zuzulova, Ludevit Kadasi
Abstract: Lung infections are the leading cause of morbidity and mortality in cystic fibrosis (CF). Mannose-binding lectin (MBL) is a key factor in innate immunity. We therefore investigated whether MBL2 gene variants are associated with pulmonary function or susceptibility to Pseudomonas aeruginosa and Burkholderia cepacia infection in Slovak patients affected with CF. DNA polymorphisms in exon 1 and the promoter region were typed by single base primer extension assay in 91 patients and 100 healthy controls. The concentrations of MBL protein were determined in 34 patients by a sandwich enzyme-linked immunosorbent assay, and spirometric and microbiological data were collected from medical records. In this study we found that MBL2 genotypes were associated neither with earlier acquisition of P. aeruginosa or B. cepacia nor with reduced pulmonary function among patients. Although MBL2 genotypes were associated with the MBL2 protein serum level, results were statistically significant only for polymorphisms in exon 1, with p = 0.0008. The role of the MBL2 gene in lung disease severity in CF patients represents a very complex phenomenon where both genetic and environmental factors play an important role in addition to that of the MBL2 gene. Understanding this complexity requires further studies based on a broader scale of genetic factors involving both a whole-genome approach and a larger patient cohort.
Keywords: Cystic fibrosis — Mannose-binding lectin-polymorphism — Modifier gene — Lung function
Year: 2011, Volume: 30, Issue: 4 Page From: 373, Page To: 378
doi:10.4149/gpb_2011_04_373


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