Article (Scientific journals)
Chromosome 12q24.3 controls sensitization to cat allergen in patients with asthma from Siberia, Russia
Gusareva, Elena; Bragina, Elena; Buinova, Svetlana et al.
2009In Immunology Letters, 125 (1), p. 1-6
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Keywords :
asthma, cat allergens, 12q24; total and specific IgE; Siberian population
Abstract :
[en] In Russian population of Siberia asthma is usually concomitant with high sensitization to indoor allergens (cat, dog and house dust mites), overproduction of total immunoglobulin E (IgE) and airway hyperreactivity. Definition of genes that predispose to development of various sub-components of the asthma phenotype is important for understanding of etiology of this disease. To map genes predisposing to asthma,we tested 21 microsatellite markers from candidate chromosomal regions in 136 Russian nuclear families with asthma from Siberia.We performed non-parametric analysis for linkage with asthma, total IgE, specific IgE to cat, dog, and dust mites, and spirometric indices (FEV1 (%) – percentage of predicted forced expiratory volume in 1 s, FVC (%) – percentage of predicted forced vital capacity, and FEV1/FVC (%) – Tiffenau index). The most significant linkagewas to the candidate region on chromosome 12. Locus controlling cat-specific IgE, which is the most abundant in asthma patients fromSiberian population, mapped within the interval between 136 and 140 cM on chromosome 12q24.3, with the suggestive linkage at the marker D12S1611 (LOD= 2.23, P = 0.0007). Total IgE was also linked to this region (D12S1611 – LOD= 1.12, P = 0.012). FEV1 (%) exceeded LOD> 1 threshold for significance with the same locus 12q24.3, but with the peak at a more proximal region at 111.87cM (D12S338 – LOD= 1.21, P = 0.009). Some evidence of linkage (LOD> 1.0) was also detected for asthma at 6p21.31 (D6S291) and total IgE at 13q14.2 (D13S165). These data indicate that the locus 12q24.3 is the most promising candidate for identification of asthma genes in Russian population of Siberia.
Disciplines :
Genetics & genetic processes
Author, co-author :
Gusareva, Elena ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Bioinformatique
Bragina, Elena;  Research Institute of Medical Genetics, Tomsk, Russia > Population Genetics
Buinova, Svetlana;  Irkutsk State Institute for Post-graduate Medical Education, Irkutsk, Russia > Department of Allergology and Pulmonology
Chernyak, Boris;  Irkutsk State Institute for Post-graduate Medical Education, Irkutsk, Russia > Department of Allergology and Pulmonology
Puzyrev, Valery;  Research Institute of Medical Genetics, Tomsk, Russia > Population genetics
Ogorodova, Ludmila;  Siberian State Medical University, Tomsk, Russia > Medical Genetics
Lipoldová, Marie;  Institute of Molecular Genetics v.v.i., AS CR, Prague, Czech Repub > Dep. of Molecular and Cellular Immunology
Language :
English
Title :
Chromosome 12q24.3 controls sensitization to cat allergen in patients with asthma from Siberia, Russia
Publication date :
30 June 2009
Journal title :
Immunology Letters
ISSN :
0165-2478
eISSN :
1879-0542
Publisher :
Elsevier, Amsterdam, Netherlands
Volume :
125
Issue :
1
Pages :
1-6
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Impact of genetic and environmental factors on development of atopy and allergic diseases in human populations
Available on ORBi :
since 28 May 2011

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