PMID- 30828914 OWN - NLM STAT- MEDLINE DCOM- 20190613 LR - 20220408 IS - 1365-3164 (Electronic) IS - 0959-4493 (Linking) VI - 30 IP - 3 DP - 2019 Jun TI - Longitudinal evaluation of immunological responses to allergen-specific immunotherapy in horses with IgE associated dermatological disease, a pilot study. PG - 255-e78 LID - 10.1111/vde.12732 [doi] AB - BACKGROUND: The long-term effects of allergen specific immunotherapy (ASIT) on concentrations of circulating immunoglobulin E (IgE) and immunoglobulin G (IgG) in horses have not been reported. OBJECTIVES: To document changes in clinical severity of horses with atopic dermatitis (AD) and to monitor allergen-specific IgE and IgG concentrations during a two-year course of ASIT. ANIMALS: Nineteen client-owned horses with a conditional diagnosis of AD. METHODS AND MATERIALS: Three ASIT groups were randomly assigned based upon results obtained by either intradermal testing (IDT) for regional allergens (n = 7); enzyme-linked immunosorbent assay (ELISA) for specific IgE (n = 6); or a composite of results from both tests (n = 6). Serum concentrations of IgE and IgG specific for allergens included in ASIT were measured at time zero and at four-month intervals. A visual analog scale (VAS) was used to record severity of clinical signs at times zero, 12 and 24 months. RESULTS: Positive correlations were documented between IgE and both immediate and delayed IDT results (P < 0.00001), and between immediate IDT and IgG results (P = 0.003). Specific IgE in sera decreased significantly (P < 0.05) for allergens that were included in ASIT, whereas IgG increased. Across all horses, the mean VAS score decreased by 1.2 units [95% CI: 1.28, 1.14; (P < 0.0001)] during each 12-month period of ASIT therapy. Improvement in clinical signs was noted in 76.5% of the horses following 12 months of ASIT and in 82% after 24 months on ASIT. CONCLUSIONS AND CLINICAL IMPORTANCE: In this pilot study, ASIT in horses with AD provided significant clinical benefit associated with a concomitant reduction of allergen-specific IgE and elevation of IgG. CI - (c) 2019 ESVD and ACVD. FAU - Radwanski, Noel E AU - Radwanski NE AUID- ORCID: 0000-0002-1318-7666 AD - Blue Pearl Veterinary Partners, 3000 Busch Lake Blvd, Tampa, FL, 33614, USA. FAU - Morris, Daniel O AU - Morris DO AD - School of Veterinary Medicine, University of Pennsylvania, 3900 Spruce St, Philadelphia, PA, 19104, USA. FAU - Boston, Raymond C AU - Boston RC AD - School of Veterinary Medicine, University of Pennsylvania, 3900 Spruce St, Philadelphia, PA, 19104, USA. FAU - Cerundolo, Rosario AU - Cerundolo R AD - Dick White Referrals Veterinary Specialist Centre, Six Mile Bottom, Cambridgeshire, CB8 OUH, UK. FAU - Lee, Kenneth W AU - Lee KW AD - Greer Laboratories, Inc, 639 Nuway Circle NE, Lenoir, NC, 28645, USA. LA - eng GR - Greer Laboratories, North Carolina, USA/ PT - Evaluation Study PT - Journal Article DEP - 20190304 PL - England TA - Vet Dermatol JT - Veterinary dermatology JID - 9426187 RN - 0 (Allergens) RN - 0 (Immunoglobulin G) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Allergens/immunology MH - Animals MH - Dermatitis, Atopic/therapy/*veterinary MH - Desensitization, Immunologic/*veterinary MH - Enzyme-Linked Immunosorbent Assay MH - Horse Diseases/*immunology/therapy MH - Horses/immunology MH - Immunoglobulin E/blood/*immunology MH - Immunoglobulin G/blood/immunology MH - Intradermal Tests/veterinary MH - Longitudinal Studies MH - Ownership MH - Pilot Projects EDAT- 2019/03/05 06:00 MHDA- 2019/06/14 06:00 CRDT- 2019/03/05 06:00 PHST- 2018/12/21 00:00 [accepted] PHST- 2019/03/05 06:00 [pubmed] PHST- 2019/06/14 06:00 [medline] PHST- 2019/03/05 06:00 [entrez] AID - 10.1111/vde.12732 [doi] PST - ppublish SO - Vet Dermatol. 2019 Jun;30(3):255-e78. doi: 10.1111/vde.12732. Epub 2019 Mar 4.