PMID- 38071496 OWN - NLM STAT- MEDLINE DCOM- 20240123 LR - 20240202 IS - 1939-1676 (Electronic) IS - 0891-6640 (Print) IS - 0891-6640 (Linking) VI - 38 IP - 1 DP - 2024 Jan-Feb TI - Microarray molecular mapping of horses with severe asthma. PG - 477-484 LID - 10.1111/jvim.16951 [doi] AB - BACKGROUND: Severe asthma (SA) in horses, resembling human asthma, is a prevalent, debilitating allergic respiratory condition marked by elevated allergen-specific immunoglobulin E (IgE) against environmental proteins; however, research exploring the exposome's influence on IgE profiles is currently limited but holds paramount significance for diagnostic and therapeutic developments. ANIMALS: Thirty-five sports horses were analyzed, consisting of environmentally matched samples from France (5 SA; 6 control), the United States (6 SA; 6 control), and Canada (6 SEA; 6 control). METHODS: This intentional cross-sectional study investigated the sensitization profiles of SA-affected and healthy horses via serological antigen microarray profiling. Partial least square-discriminant analysis (PLS-DA) was used to identify and rank the importance of allergens for class separation (ie, affected/non-affected) as variable influence of projection (VIP), and allergen with commonality internationally established via frequency analysis. RESULTS: PLS-DA models showed high discriminatory power in predicting SA in horses from Canada (area under the curve [AUC] 0.995) and France (AUC 0.867) but poor discriminatory power in horses from the United States (AUC 0.38). Hev b 5.0101, Cyn D, Der p 2, and Rum cr were the only shared allergens across all geographical groups. CONCLUSIONS AND CLINICAL IMPORTANCE: Microarray profiling can identify specific allergenic components associated with SA in horses, while mathematical modeling of this data can be used for disease classification, highlighting the variability of sensitization profiles between geographical locations and emphasizing the importance of local exposure to the prevalence of different allergens. Frequency scoring analysis can identify important variables that contribute to the classification of SA across different geographical regions. CI - (c) 2023 The Authors. Journal of Veterinary Internal Medicine published by Wiley Periodicals LLC on behalf of American College of Veterinary Internal Medicine. FAU - White, Samuel J AU - White SJ AUID- ORCID: 0000-0002-3675-7545 AD - Nottingham Trent University, Nottinghamshire, UK. FAU - Couetil, Laurent AU - Couetil L AUID- ORCID: 0000-0002-1516-6666 AD - Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana, USA. FAU - Richard, Eric A AU - Richard EA AD - LABEO Frank Duncombe, Caen Cedex, France. AD - Normandie Univ, UniCaen, BIOTARGEN, Saint-Contest, France. FAU - Marti, Eliane AU - Marti E AD - Department of Clinical Research and Veterinary Public Health, University of Bern, Bern, Switzerland. FAU - Wilson, Philippe B AU - Wilson PB AUID- ORCID: 0000-0003-0207-2246 AD - Nottingham Trent University, Nottinghamshire, UK. LA - eng GR - Medical Technologies Innovation Facility, Nottingham Trent University/ PT - Journal Article DEP - 20231210 PL - United States TA - J Vet Intern Med JT - Journal of veterinary internal medicine JID - 8708660 RN - 0 (Allergens) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Humans MH - Animals MH - Horses MH - Cross-Sectional Studies MH - *Asthma/veterinary/diagnosis MH - Allergens MH - *Hypersensitivity/veterinary MH - Immunoglobulin E MH - *Horse Diseases/diagnosis PMC - PMC10800233 OTO - NOTNLM OT - IgE OT - One Health OT - allergen OT - microarray OT - severe equine asthma COIS- Authors declare no conflict of interest. EDAT- 2023/12/10 08:41 MHDA- 2024/01/23 06:43 PMCR- 2023/12/10 CRDT- 2023/12/10 05:28 PHST- 2023/05/08 00:00 [received] PHST- 2023/11/08 00:00 [accepted] PHST- 2024/01/23 06:43 [medline] PHST- 2023/12/10 08:41 [pubmed] PHST- 2023/12/10 05:28 [entrez] PHST- 2023/12/10 00:00 [pmc-release] AID - JVIM16951 [pii] AID - 10.1111/jvim.16951 [doi] PST - ppublish SO - J Vet Intern Med. 2024 Jan-Feb;38(1):477-484. doi: 10.1111/jvim.16951. Epub 2023 Dec 10.