Back to Search
Start Over
Cul o 2 specific IgG3/5 antibodies predicted Culicoides hypersensitivity in a group imported Icelandic horses
- Source :
- BMC Veterinary Research, Vol 16, Iss 1, Pp 1-12 (2020), BMC Veterinary Research
- Publication Year :
- 2020
- Publisher :
- BMC, 2020.
-
Abstract
- Publisher's version (útgefin grein)<br />Background: Culicoides hypersensitivity (CH) is induced in horses by salivary allergens of Culicoides midges. In Iceland, the causal Culicoides species for CH are not present. Previous epidemiological data indicated that Icelandic horses are more susceptible to CH when they are exported from Iceland and first exposed to Culicoides at adult age. Horses born in countries where Culicoides is endemic, develop the disease less frequently. Here, we established a longitudinal allergy model to identify predictive and diagnostic serological biomarkers of CH. Results: Sixteen adult Icelandic horses from Iceland were imported to the Northeastern United States (US) during the winter and were kept in the same environment with natural Culicoides exposure for the next two years. None of the horses showed clinical allergy during the first summer of Culicoides exposure. In the second summer, 9/16 horses (56%) developed CH. Allergen specific IgE and IgG isotype responses in serum samples were analysed using nine potential Culicoides allergens in a fluorescent bead-based multiplex assay. During the first summer of Culicoides exposure, while all horses were still clinically healthy, Cul o 2 specific IgG3/5 antibodies were higher in horses that developed the allergic disease in the second summer compared to those that did not become allergic (p = 0.043). The difference in Cul o 2 specific IgG3/5 antibodies between the two groups continued to be detectable through fall (p = 0.035) and winter of the first year. During the second summer, clinical signs first appeared and Cul o 3 specific IgG3/5 isotypes were elevated in allergic horses (p = 0.041). Cul o 2 specific IgG5 (p = 0.035), and Cul o 3 specific IgG3/5 (p = 0.043) were increased in late fall of year two when clinical signs started to improve again. Conclusions: Our results identified IgG5 and IgG3/5 antibodies against Cul o 2 and Cul o 3, respectively, as markers for CH during and shortly after the allergy season in the Northeastern US. In addition, Cul o 2 specific IgG3/5 antibodies may be valuable as a predictive biomarker of CH in horses that have been exposed to Culicoides but did not yet develop clinical signs.<br />The importation and maintenance of the horses in this study were funded by research support from the Harry M. Zweig Memorial Fund for Equine Research at Cornell University. The equine isotype reagent described in this article were developed and characterized with funding from Agriculture and Food Research Initiative Competitive Grants no. #2005–01812 (The US Veterinary Immune Reagent Network). The serological allergen multiplex analysis of the samples was supported by research funds provided by Boehringer Ingelheim.
- Subjects :
- Male
Allergy
Veterinary medicine
Hestar
Clinical score
Immunoglobulin E
Ceratopogonidae
Horse
0403 veterinary science
Epidemiology
Longitudinal Studies
Culicoides hypersensitivity
0303 health sciences
lcsh:Veterinary medicine
biology
04 agricultural and veterinary sciences
General Medicine
Culicoides
Serological biomarkers
Female
Seasons
IgE
Antibody
Research Article
medicine.medical_specialty
040301 veterinary sciences
IgG
New York
03 medical and health sciences
medicine
Hypersensitivity
Animals
Horses
Lúsmý
030304 developmental biology
Major allergens
General Veterinary
Insect Bites and Stings
medicine.disease
biology.organism_classification
Serum samples
Ofnæmi
Immunoglobulin G
Immunologically naïve
biology.protein
lcsh:SF600-1100
Horse Diseases
Biomarkers
Subjects
Details
- Language :
- English
- ISSN :
- 17466148
- Volume :
- 16
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- BMC Veterinary Research
- Accession number :
- edsair.doi.dedup.....e4906e84302ba68a0ae9bbaf59fc20fa