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Ghosh S, Das PJ, McQueen CM, Gerber V, Swiderski CE, Lavoie JP, Chowdhary BP, Raudsepp T. Analysis of genomic copy number variation in equine recurrent airway obstruction (heaves). Anim Genet 2016; 47:334-44. [PMID: 26932307 DOI: 10.1111/age.12426] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/10/2016] [Indexed: 12/18/2022]
Abstract
We explored the involvement of genomic copy number variants (CNVs) in susceptibility to recurrent airway obstruction (RAO), or heaves-an asthmalike inflammatory disease in horses. Analysis of 16 RAO-susceptible (cases) and six RAO-resistant (control) horses on a custom-made whole-genome 400K equine tiling array identified 245 CNV regions (CNVRs), 197 previously known and 48 new, distributed on all horse autosomes and the X chromosome. Among the new CNVRs, 30 were exclusively found in RAO cases and were further analyzed by quantitative PCR, including additional cases and controls. Suggestive association (P = 0.03; corrected P = 0.06) was found between RAO and a loss on chromosome 5 involving NME7, a gene necessary for ciliary functions in lungs and involved in primary ciliary dyskinesia in humans. The CNVR could be a potential marker for RAO susceptibility but needs further study in additional RAO cohorts. Other CNVRs were not associated with RAO, although several involved genes of interest, such as SPI2/SERPINA1 from the serpin gene family, which are associated with chronic obstructive pulmonary disease and asthma in humans. The SPI2/SERPINA1 CNVR showed striking variation among horses, but it was not significantly different between RAO cases and controls. The findings provide baseline information on the relationship between CNVs and RAO susceptibility. Discovery of new CNVs and the use of a larger population of RAO-affected and control horses are needed to shed more light on their significance in modulating this complex and heterogeneous disease.
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Affiliation(s)
- S Ghosh
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, 77843, USA
| | - P J Das
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, 77843, USA.,National Research Centre on Yak (ICAR), Dirang, Arunachal Pradesh, 790101, India
| | - C M McQueen
- Department of Large Animal Clinical Sciences, Texas A&M University, College Station, TX, 77843, USA
| | - V Gerber
- Department of Veterinary Medicine, University of Bern, Bern, Switzerland
| | - C E Swiderski
- Department of Clinical Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS, USA
| | - J-P Lavoie
- Department of Clinical Sciences, University of Montreal, Montreal, QC, J2S 7C6, Canada
| | - B P Chowdhary
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, 77843, USA.,New Research Complex, Qatar University, Doha, 2713, Qatar
| | - T Raudsepp
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, 77843, USA
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Shakhsi-Niaei M, Klukowska-Rötzler J, Drögemüller C, Swinburne J, Ehrmann C, Saftic D, Ramseyer A, Gerber V, Dolf G, Leeb T. Replication and fine-mapping of a QTL for recurrent airway obstruction in European Warmblood horses. Anim Genet 2012; 43:627-31. [DOI: 10.1111/j.1365-2052.2011.02315.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/02/2011] [Indexed: 11/29/2022]
Affiliation(s)
- M. Shakhsi-Niaei
- Institute of Genetics; Vetsuisse Faculty; University of Bern; Bremgartenstrasse 109a; Berne; 3001; Switzerland
| | - J. Klukowska-Rötzler
- Institute of Genetics; Vetsuisse Faculty; University of Bern; Bremgartenstrasse 109a; Berne; 3001; Switzerland
| | - C. Drögemüller
- Institute of Genetics; Vetsuisse Faculty; University of Bern; Bremgartenstrasse 109a; Berne; 3001; Switzerland
| | - J. Swinburne
- Animal Health Trust; Newmarket; Suffolk; CB8 7UU; UK
| | - C. Ehrmann
- Clinic for Horses; Department of Clinical Veterinary Science; Justus-Liebig-University Giessen; Frankfurter Str. 126; Giessen; 35392; Germany
| | - D. Saftic
- Equine Clinic; Department of Clinical Veterinary Medicine; Vetsuisse Faculty; University of Bern; Länggassstrasse 124; Berne; 3001; Switzerland
| | - A. Ramseyer
- Agroscope ALP-Haras; Avenches; 1580; Switzerland
| | - V. Gerber
- Equine Clinic; Department of Clinical Veterinary Medicine; Vetsuisse Faculty; University of Bern; Länggassstrasse 124; Berne; 3001; Switzerland
| | - G. Dolf
- Institute of Genetics; Vetsuisse Faculty; University of Bern; Bremgartenstrasse 109a; Berne; 3001; Switzerland
| | - T. Leeb
- Institute of Genetics; Vetsuisse Faculty; University of Bern; Bremgartenstrasse 109a; Berne; 3001; Switzerland
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