A prospective study on insect bite hypersensitivity in horses exported from Iceland into Switzerland
Abstract Background Insect bite hypersensitivity (IBH) is an IgE-mediated dermatitis caused by bites of Culicoides spp., which occurs frequently in horses imported from Iceland to continental Europe. IBH does not occur in Iceland because Culicoides species that bite horses are not present. However,...
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ftdoajarticles:oai:doaj.org/article:1da1af609fce4b66a23e485657d2120d 2023-05-15T16:44:23+02:00 A prospective study on insect bite hypersensitivity in horses exported from Iceland into Switzerland Sigurbjörg Torsteinsdottir Stephan Scheidegger Silvia Baselgia Sigridur Jonsdottir Vilhjalmur Svansson Sigridur Björnsdottir Eliane Marti 2018-11-01T00:00:00Z https://doi.org/10.1186/s13028-018-0425-1 https://doaj.org/article/1da1af609fce4b66a23e485657d2120d EN eng BMC http://link.springer.com/article/10.1186/s13028-018-0425-1 https://doaj.org/toc/1751-0147 doi:10.1186/s13028-018-0425-1 1751-0147 https://doaj.org/article/1da1af609fce4b66a23e485657d2120d Acta Veterinaria Scandinavica, Vol 60, Iss 1, Pp 1-10 (2018) Culicoides Icelandic horses Insect bite hypersensitivity Simulium Sulfidoleukotriene release assay Veterinary medicine SF600-1100 article 2018 ftdoajarticles https://doi.org/10.1186/s13028-018-0425-1 2022-12-31T05:56:28Z Abstract Background Insect bite hypersensitivity (IBH) is an IgE-mediated dermatitis caused by bites of Culicoides spp., which occurs frequently in horses imported from Iceland to continental Europe. IBH does not occur in Iceland because Culicoides species that bite horses are not present. However, Simulium vittatum (S. vittatum) are found in Iceland. In Europe, blood basophils from IBH-affected horses release significantly more sulfidoleukotrienes (sLT) than those from healthy controls after in vitro stimulation with Culicoides nubeculosus (C. nubeculosus) and S. vittatum. Aims of the study were: (I) using the sLT release assay, to test if horses living in Iceland were sensitized to S. vittatum and (II) to determine in a longitudinal study in horses imported from Iceland to Switzerland whether the sLT release assay would allow to predict which horses would develop IBH. Results Horses in Iceland, even when living in high S. vittatum areas, were usually not sensitized to S. vittatum or C. nubeculosus. Incidence of IBH in the 145 horses from the longitudinal study was 51% and mean time until IBH developed was 2.5 ± 1 year. Before import and after the first summer following import, there were no significant differences in sLT release between the endpoint healthy (H) and IBH groups. After the 2nd summer, when the number of clinically affected horses increased in the endpoint IBH group, a significantly higher sLT release after stimulation with C. nubeculosus but not with S. vittatum was observed. After the 3rd and 4th summer, the endpoint IBH group had a significantly higher sLT release with C. nubeculosus and S. vittatum than the endpoint H group. Some of the horses that remained healthy became transiently positive in the sLT release assay upon stimulation of their peripheral blood leucocytes with C. nubeculosus. Conclusions Horses in Iceland are not sensitized to S. vittatum. In horses that develop IBH, sensitization to S. vittatum is secondary to sensitization to C. nubeculosus and probably a result of an ... Article in Journal/Newspaper Iceland Directory of Open Access Journals: DOAJ Articles Acta Veterinaria Scandinavica 60 1 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Culicoides Icelandic horses Insect bite hypersensitivity Simulium Sulfidoleukotriene release assay Veterinary medicine SF600-1100 |
spellingShingle |
Culicoides Icelandic horses Insect bite hypersensitivity Simulium Sulfidoleukotriene release assay Veterinary medicine SF600-1100 Sigurbjörg Torsteinsdottir Stephan Scheidegger Silvia Baselgia Sigridur Jonsdottir Vilhjalmur Svansson Sigridur Björnsdottir Eliane Marti A prospective study on insect bite hypersensitivity in horses exported from Iceland into Switzerland |
topic_facet |
Culicoides Icelandic horses Insect bite hypersensitivity Simulium Sulfidoleukotriene release assay Veterinary medicine SF600-1100 |
description |
Abstract Background Insect bite hypersensitivity (IBH) is an IgE-mediated dermatitis caused by bites of Culicoides spp., which occurs frequently in horses imported from Iceland to continental Europe. IBH does not occur in Iceland because Culicoides species that bite horses are not present. However, Simulium vittatum (S. vittatum) are found in Iceland. In Europe, blood basophils from IBH-affected horses release significantly more sulfidoleukotrienes (sLT) than those from healthy controls after in vitro stimulation with Culicoides nubeculosus (C. nubeculosus) and S. vittatum. Aims of the study were: (I) using the sLT release assay, to test if horses living in Iceland were sensitized to S. vittatum and (II) to determine in a longitudinal study in horses imported from Iceland to Switzerland whether the sLT release assay would allow to predict which horses would develop IBH. Results Horses in Iceland, even when living in high S. vittatum areas, were usually not sensitized to S. vittatum or C. nubeculosus. Incidence of IBH in the 145 horses from the longitudinal study was 51% and mean time until IBH developed was 2.5 ± 1 year. Before import and after the first summer following import, there were no significant differences in sLT release between the endpoint healthy (H) and IBH groups. After the 2nd summer, when the number of clinically affected horses increased in the endpoint IBH group, a significantly higher sLT release after stimulation with C. nubeculosus but not with S. vittatum was observed. After the 3rd and 4th summer, the endpoint IBH group had a significantly higher sLT release with C. nubeculosus and S. vittatum than the endpoint H group. Some of the horses that remained healthy became transiently positive in the sLT release assay upon stimulation of their peripheral blood leucocytes with C. nubeculosus. Conclusions Horses in Iceland are not sensitized to S. vittatum. In horses that develop IBH, sensitization to S. vittatum is secondary to sensitization to C. nubeculosus and probably a result of an ... |
format |
Article in Journal/Newspaper |
author |
Sigurbjörg Torsteinsdottir Stephan Scheidegger Silvia Baselgia Sigridur Jonsdottir Vilhjalmur Svansson Sigridur Björnsdottir Eliane Marti |
author_facet |
Sigurbjörg Torsteinsdottir Stephan Scheidegger Silvia Baselgia Sigridur Jonsdottir Vilhjalmur Svansson Sigridur Björnsdottir Eliane Marti |
author_sort |
Sigurbjörg Torsteinsdottir |
title |
A prospective study on insect bite hypersensitivity in horses exported from Iceland into Switzerland |
title_short |
A prospective study on insect bite hypersensitivity in horses exported from Iceland into Switzerland |
title_full |
A prospective study on insect bite hypersensitivity in horses exported from Iceland into Switzerland |
title_fullStr |
A prospective study on insect bite hypersensitivity in horses exported from Iceland into Switzerland |
title_full_unstemmed |
A prospective study on insect bite hypersensitivity in horses exported from Iceland into Switzerland |
title_sort |
prospective study on insect bite hypersensitivity in horses exported from iceland into switzerland |
publisher |
BMC |
publishDate |
2018 |
url |
https://doi.org/10.1186/s13028-018-0425-1 https://doaj.org/article/1da1af609fce4b66a23e485657d2120d |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Acta Veterinaria Scandinavica, Vol 60, Iss 1, Pp 1-10 (2018) |
op_relation |
http://link.springer.com/article/10.1186/s13028-018-0425-1 https://doaj.org/toc/1751-0147 doi:10.1186/s13028-018-0425-1 1751-0147 https://doaj.org/article/1da1af609fce4b66a23e485657d2120d |
op_doi |
https://doi.org/10.1186/s13028-018-0425-1 |
container_title |
Acta Veterinaria Scandinavica |
container_volume |
60 |
container_issue |
1 |
_version_ |
1766034672667590656 |