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Molecular Biology Reports

, Volume 40, Issue 4, pp 3333–3340 | Cite as

Major histocompatibility complex and other allergy-related candidate genes associated with insect bite hypersensitivity in Icelandic horses

  • Marie Klumplerova
  • Leona Vychodilova
  • Olga Bobrova
  • Michaela Cvanova
  • Jan Futas
  • Eva Janova
  • Mirko Vyskocil
  • Irena Vrtkova
  • Lenka Putnova
  • Ladislav Dusek
  • Eliane Marti
  • Petr HorinEmail author
Article

Abstract

Insect bite hypersensitivity (IBH) is an allergic dermatitis of horses caused by bites of insects. IBH is a multifactorial disease with contribution of genetic and environmental factors. Candidate gene association analysis of IBH was performed in a group of 89 Icelandic horses all born in Iceland and imported to Europe. Horses were classified in IBH-affected and non-affected based on clinical signs and history of recurrent dermatitis, and on the results of an in vitro sulfidoleukotriene (sLT)-release assay with Culicoides nubeculosus and Simulium vittatum extract. Different genetic markers were tested for association with IBH by the Fisher’s exact test. The effect of the major histocompatibility complex (MHC) gene region was studied by genotyping five microsatellites spanning the MHC region (COR112, COR113, COR114, UM011 and UMN-JH34-2), and exon 2 polymorphisms of the class II Eqca-DRA gene. Associations with Eqca-DRA and COR113 were identified (p < 0.05). In addition, a panel of 20 single nucleotide polymorphisms (SNPs) in 17 candidate allergy-related genes was tested. During the initial screen, no marker from the panel was significantly (p < 0.05) associated with IBH. Five SNPs associated with IBH at p < 0.10 were therefore used for analysis of combined genotypes. Out of them, SNPs located in the genes coding for the CD14 receptor (CD14), interleukin 23 receptor (IL23R), thymic stromal lymphopoietin (TSLP) and transforming growth factor beta 3 (TGFB3) molecules were associated with IBH as parts of complex genotypes. These results are supported by similar associations and by expression data from different horse populations and from human studies.

Keywords

Horse Insect bite hypersensitivity Major histocompatibility complex Association analysis 

Notes

Acknowledgments

The work was supported by the Grant Agency of the Czech Republic projects 523/06/1402 and 524/09/1939, by IGA VFU project 22/05/FVL, and by the Swiss National Science Foundation Grant No. 310030_129837/1.

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Copyright information

© Springer Science+Business Media Dordrecht 2012

Authors and Affiliations

  • Marie Klumplerova
    • 1
    • 5
  • Leona Vychodilova
    • 1
  • Olga Bobrova
    • 1
  • Michaela Cvanova
    • 2
  • Jan Futas
    • 1
  • Eva Janova
    • 1
  • Mirko Vyskocil
    • 1
  • Irena Vrtkova
    • 3
  • Lenka Putnova
    • 3
  • Ladislav Dusek
    • 2
  • Eliane Marti
    • 4
  • Petr Horin
    • 1
    • 5
    Email author
  1. 1.Institute of Animal Genetics, Faculty of Veterinary MedicineUniversity of Veterinary and Pharmaceutical SciencesBrnoCzech Republic
  2. 2.Institute of Biostatistics and AnalysesMasaryk UniversityBrnoCzech Republic
  3. 3.Laboratory of AgrigenomicsMendel UniversityBrnoCzech Republic
  4. 4.Department of Clinical Research-VPH, Vetsuisse FacultyUniversity of BerneBerneSwitzerland
  5. 5.Ceitec VFU, University of Veterinary and Pharmaceutical SciencesBrnoCzech Republic

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