Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Editor

Personal info

View

About

Terms

Javascript disabled

Please enable Javascript support in your browser to use this application.

Instructions on how to enable JavaScript on different browsers can be found here: http://www.google.com/support/bin/answer.py?answer=23852.

[edit this page]

Saxena, S. et al.

Association of polymorphisms in the collagen region of SP-A2 with increased levels of total IgE antibodies and eosinophilia in patients with allergic bronchopulmonary aspergillosis.

BACKGROUND: Studies from our group have shown a protective role of pulmonary surfactant protein A (SP-A) against lung allergy and infections caused by Aspergillus fumigatus. OBJECTIVE: Present study investigated the association of polymorphisms in the collagen region of SP-A1 and SP-A2 (genes encoding SP-A) with allergic bronchopulmonary aspergillosis (ABPA) and its clinical markers. METHODS: Genomic DNA was extracted from blood samples of patients with ABPA and age-matched, unrelated control subjects. The polymorphisms were detected by means of PCR amplification and sequencing of the collagen region of SP-A1 and SP-A2. RESULTS: Two exonic (SP-A2 G1649C and SP-A2 A1660G, 10 patients and 11 control subjects) and 2 intronic (SP-A2 T1492C, 8 patients and 8 control subjects; SP-A1 C1416T, 5 patients and 7 control subjects) polymorphisms in the collagen region of SP-A2 and SP-A1 showed significant association with patients with ABPA. A significantly higher frequency of the AGA allele (A1660G) of SP-A2 was observed in patients with ABPA in comparison with control subjects (P =.0156, odds ratio [OR] = 4.78, 95% CI = 1.23 < OR < 18.52). This polymorphism, when existing along with a nonredundant polymorphism, SP-A2 G1649C (Ala91Pro) resulted in a stronger association with ABPA (A1660G and G1649C: P =.0079, OR = 10.4, 95% CI = 1.62 < OR < 66.90). Patients with ABPA with GCT and AGG alleles showed significantly high levels of total IgE and percentage eosinophilia versus patients with ABPA with CCT and AGA alleles. CONCLUSION: The results indicated that SP-A2 G1649C and SP-A2 A1660G, polymorphisms in the collagen region of SP-A2, might be one of the contributing factors to genetic predisposition and severity of clinical markers of ABPA.[1]

References

Association of polymorphisms in the collagen region of SP-A2 with increased levels of total IgE antibodies and eosinophilia in patients with allergic bronchopulmonary aspergillosis. Saxena, S., Madan, T., Shah, A., Muralidhar, K., Sarma, P.U. J. Allergy Clin. Immunol. (2003) [Pubmed]

Annotations and hyperlinks in this abstract are from individual authors of WikiGenes or automatically generated by the WikiGenes Data Mining Engine. The abstract is from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.About WikiGenes Open Access Licence Privacy Policy Terms of Use apsburg

The world's first wiki where authorship really matters (Nature Genetics, 2008). Due credit and reputation for authors. Imagine a global collaborative knowledge base for original thoughts. Search thousands of articles and collaborate with scientists around the globe.