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CLC- a novel susceptibility gene for allergic rhinitis?
- Bryborn, M. (author)
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- Halldén, Christer (author)
- Lund University,Lunds universitet,Klinisk kemi, Malmö,Forskargrupper vid Lunds universitet,Clinical Chemistry, Malmö,Lund University Research Groups
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- Säll, Torbjörn (author)
- Lund University,Lunds universitet,MEMEG,Biologiska institutionen,Naturvetenskapliga fakulteten,Department of Biology,Faculty of Science
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- (creator_code:org_t)
- Wiley, 2010
- 2010
- English.
- In: Allergy. - : Wiley. - 1398-9995 .- 0105-4538. ; 65:2, s. 220-228
- Journal article (peer-reviewed)
Abstract
Subject headings
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- P>Background: Studies of the nasal lavage fluid proteome have previously identified proteins differently expressed in patients with symptomatic allergic rhinitis, e.g. S100A7, prolactin-inducible protein (PIP), wingless-type MMTV integration site family, member 2B (WNT2B), Charcot-Leyden crystal protein (CLC) and palate lung nasal epithelial clone (PLUNC). The aim of the present study was to investigate if genetic variation associated with allergic rhinitis can be found in these genes. Methods: Peripheral blood was collected from 251 patients with birch and/or grass pollen-induced allergic rhinitis and 386 nonatopic healthy controls. A total of 39 single nucleotide polymorphisms (SNPs) distributed over the genes PIP, WNT2B, CLC and PLUNC were selected from dbSNP, genotyped and investigated for associations with allergic rhinitis. Twelve additional SNPs were subsequently analysed for CLC. Results: All 22 investigated SNPs in CLC were polymorphic. Ten SNPs yielded significant differences between cases and controls with respect to genotype frequencies. Homozygotes for the minor allele were more common in allergic individuals compared to healthy controls. The minor alleles of these SNPs were all located on the same haplotype. Furthermore, homozygotes for the minor allele of two of the promoter SNPs had higher average scores for birch in skin prick test. In contrast, for seven SNPs within the gene, heterozygotes and homozygotes for the major allele had higher average scores for grass. None of the other three genes showed association. Conclusion: Genetic variation in CLC was found to be associated with allergic rhinitis. The pattern of variation is compatible with a recessive inheritance model and the previously observed altered protein levels detected in patients with allergic rhinitis.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Lungmedicin och allergi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Respiratory Medicine and Allergy (hsv//eng)
Keyword
- genetic variation
- Charcot-Leyden crystal protein
- allergic rhinitis
- association study
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- Säll, Torbjörn
- Cardell, L. O.
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- Allergy
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- Lund University
- Karolinska Institutet
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