PMID- 32220059 OWN - NLM STAT- MEDLINE DCOM- 20210511 LR - 20230330 IS - 2050-4527 (Electronic) IS - 2050-4527 (Linking) VI - 8 IP - 2 DP - 2020 Jun TI - Peanut applied to the skin of nonhuman primates induces antigen-specific IgG but not IgE. PG - 211-215 LID - 10.1002/iid3.296 [doi] AB - INTRODUCTION: Previous studies in humans support the dual-allergen exposure hypothesis, and several studies in mouse models have demonstrated that cutaneous exposure to disrupted or intact skin can lead to sensitization to peanut. However, the field lacks definitive evidence that cutaneous exposure leads to peanut allergy in humans or other primates. METHODS: Peanut extract was applied to the shaved back of the neck of four male and four female African green monkeys three times per week for 4 weeks. An oral food challenge (OFC) was performed the following week by gavage of 200 mg of peanut protein, and vital signs were monitored for 30 minutes post-OFC. Blood was collected at baseline, day 11, day 32, and 30 minutes post-OFC. Total IgE, and peanut-specific immunoglobulin E (IgE) and immunoglobulin G (IgG) were quantified in serum collected throughout the 4 weeks. Histamine was measured in serum collected 30 minutes post-OFC. RESULTS: Peanut-specific IgE was undetectable at any time points in any of the monkeys, and there was no consistent increase in total IgE. During the oral challenge, none of the monkeys experienced allergic symptoms and histamine levels did not change. However, seven of the eight monkeys produced increasing peanut-specific IgG by day 32, indicating that repeated skin exposure to peanut is immunogenic. CONCLUSIONS: Skin exposure to peanut did not lead to sensitization in this study, and monkeys did not experience anaphylaxis upon peanut challenge. However, monkeys produced increased peanut-specific IgG throughout peanut exposure, indicating that repeated skin exposure to peanut is immunogenic. CI - (c) 2020 The Authors. Immunity, Inflammation and Disease published by John Wiley & Sons Ltd. FAU - Kulis, Michael D AU - Kulis MD AD - Division of Allergy, Immunology, and Rheumatology, Department of Pediatrics, University of North Carolina, Chapel Hill, North Carolina. AD - Department of Pediatrics, University of North Carolina Food Allergy Initiative, University of North Carolina, Chapel Hill, North Carolina. FAU - Smeekens, Johanna M AU - Smeekens JM AUID- ORCID: 0000-0001-9651-3852 AD - Division of Allergy, Immunology, and Rheumatology, Department of Pediatrics, University of North Carolina, Chapel Hill, North Carolina. AD - Department of Pediatrics, University of North Carolina Food Allergy Initiative, University of North Carolina, Chapel Hill, North Carolina. FAU - Kavanagh, Kylie AU - Kavanagh K AD - Department of Pathology, Section on Comparative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina. AD - Department of Biomedicine, University of Tasmania, Hobart, Tasmania, Australia. FAU - Jorgensen, Matthew J AU - Jorgensen MJ AD - Department of Pathology, Section on Comparative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina. LA - eng GR - P30 ES010126/ES/NIEHS NIH HHS/United States GR - P40 OD010965/OD/NIH HHS/United States GR - UL1 TR001420/TR/NCATS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20200327 PL - England TA - Immun Inflamm Dis JT - Immunity, inflammation and disease JID - 101635460 RN - 0 (Allergens) RN - 0 (Immunoglobulin G) RN - 37341-29-0 (Immunoglobulin E) RN - 820484N8I3 (Histamine) SB - IM MH - Allergens/*immunology MH - Anaphylaxis/immunology MH - Animals MH - Arachis/immunology MH - Chlorocebus aethiops MH - Disease Models, Animal MH - Female MH - Histamine/blood MH - Immunoglobulin E/*blood MH - Immunoglobulin G/*blood MH - Male MH - Peanut Hypersensitivity/blood/*immunology MH - Skin/immunology MH - Time Factors PMC - PMC7212195 OTO - NOTNLM OT - African green monkey OT - IgE OT - IgG OT - cutaneous OT - food allergy OT - nonhuman primate OT - peanut allergy COIS- The authors declare that there are no conflict of interests. EDAT- 2020/03/29 06:00 MHDA- 2021/05/12 06:00 PMCR- 2020/03/27 CRDT- 2020/03/29 06:00 PHST- 2019/09/26 00:00 [received] PHST- 2020/01/23 00:00 [revised] PHST- 2020/02/25 00:00 [accepted] PHST- 2020/03/29 06:00 [pubmed] PHST- 2021/05/12 06:00 [medline] PHST- 2020/03/29 06:00 [entrez] PHST- 2020/03/27 00:00 [pmc-release] AID - IID3296 [pii] AID - 10.1002/iid3.296 [doi] PST - ppublish SO - Immun Inflamm Dis. 2020 Jun;8(2):211-215. doi: 10.1002/iid3.296. Epub 2020 Mar 27.