Short-term transport stress and supplementation alter immune function in aged horses.
Long-distance transport is associated with stress-related changes in equine immune function, and shipping-associated illnesses are often reported. Horses are frequently transported short distances, yet the effects of short-term transport on immune function remain largely unknown. Twelve horses, aged...
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2021
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oai:doaj.org-article:2a9f375060a04310af279c1d57333a3d2021-12-02T20:14:58ZShort-term transport stress and supplementation alter immune function in aged horses.1932-620310.1371/journal.pone.0254139https://doaj.org/article/2a9f375060a04310af279c1d57333a3d2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0254139https://doaj.org/toc/1932-6203Long-distance transport is associated with stress-related changes in equine immune function, and shipping-associated illnesses are often reported. Horses are frequently transported short distances, yet the effects of short-term transport on immune function remain largely unknown. Twelve horses, aged 15-30 yr, were assigned to either the control (n = 6) or treatment (n = 6) groups; treatment horses received a daily antioxidant supplement 3 weeks before and after transport. All horses were transported for approximately 1.5-2 hr on Day 0. Blood was collected via jugular venipuncture at 15-min pre- and post-transport and on Days -21, 1, 3, 7, 14, and 21. Body temperature, heart rate, body weight, total cortisol, and gene expression of IFNγ, IL-1β, IL-2, IL-4, IL-6, IL-8, IL-10, IL-12α, IL-17α, SAA1, and TNFα in whole blood were measured. Peripheral blood mononuclear cells were isolated, stimulated with PMA/ionomycin, and stained for IFNγ and TNFα before analysis via flow cytometry. Statistical analyses were performed with significance set at P < 0.05 (SAS 9.4). Transport and supplementation did not appear to affect body weight, heart rate, IL-4, IL-8, IL-12α, IL-17α, change (Δ) in the % and mean fluorescence intensity (MFI) of IFNγ+ lymphocytes after stimulation, or Δ in the % and MFI of TNFα+ lymphocytes after stimulation. Supplementation decreased IL-1β and SAA1 expression. Transport increased total cortisol concentration, body temperature, and IL-2, IL-6, and IL-10 expression but decreased IL-1β, TNFα, and IFNγ expression. Short-term transportation affected physiological, endocrine, and immune responses; supplementation may ameliorate inflammation in aged horses. Immune responses were most altered at 15-min post-transport and typically recovered by Day 1, suggesting that horses may be vulnerable to disease during and almost immediately after short-term transport.Ashton B MillerPatricia A HarrisVirginia D BarkerAmanda A AdamsPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 8, p e0254139 (2021) |
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Medicine R Science Q Ashton B Miller Patricia A Harris Virginia D Barker Amanda A Adams Short-term transport stress and supplementation alter immune function in aged horses. |
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Long-distance transport is associated with stress-related changes in equine immune function, and shipping-associated illnesses are often reported. Horses are frequently transported short distances, yet the effects of short-term transport on immune function remain largely unknown. Twelve horses, aged 15-30 yr, were assigned to either the control (n = 6) or treatment (n = 6) groups; treatment horses received a daily antioxidant supplement 3 weeks before and after transport. All horses were transported for approximately 1.5-2 hr on Day 0. Blood was collected via jugular venipuncture at 15-min pre- and post-transport and on Days -21, 1, 3, 7, 14, and 21. Body temperature, heart rate, body weight, total cortisol, and gene expression of IFNγ, IL-1β, IL-2, IL-4, IL-6, IL-8, IL-10, IL-12α, IL-17α, SAA1, and TNFα in whole blood were measured. Peripheral blood mononuclear cells were isolated, stimulated with PMA/ionomycin, and stained for IFNγ and TNFα before analysis via flow cytometry. Statistical analyses were performed with significance set at P < 0.05 (SAS 9.4). Transport and supplementation did not appear to affect body weight, heart rate, IL-4, IL-8, IL-12α, IL-17α, change (Δ) in the % and mean fluorescence intensity (MFI) of IFNγ+ lymphocytes after stimulation, or Δ in the % and MFI of TNFα+ lymphocytes after stimulation. Supplementation decreased IL-1β and SAA1 expression. Transport increased total cortisol concentration, body temperature, and IL-2, IL-6, and IL-10 expression but decreased IL-1β, TNFα, and IFNγ expression. Short-term transportation affected physiological, endocrine, and immune responses; supplementation may ameliorate inflammation in aged horses. Immune responses were most altered at 15-min post-transport and typically recovered by Day 1, suggesting that horses may be vulnerable to disease during and almost immediately after short-term transport. |
format |
article |
author |
Ashton B Miller Patricia A Harris Virginia D Barker Amanda A Adams |
author_facet |
Ashton B Miller Patricia A Harris Virginia D Barker Amanda A Adams |
author_sort |
Ashton B Miller |
title |
Short-term transport stress and supplementation alter immune function in aged horses. |
title_short |
Short-term transport stress and supplementation alter immune function in aged horses. |
title_full |
Short-term transport stress and supplementation alter immune function in aged horses. |
title_fullStr |
Short-term transport stress and supplementation alter immune function in aged horses. |
title_full_unstemmed |
Short-term transport stress and supplementation alter immune function in aged horses. |
title_sort |
short-term transport stress and supplementation alter immune function in aged horses. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2021 |
url |
https://doaj.org/article/2a9f375060a04310af279c1d57333a3d |
work_keys_str_mv |
AT ashtonbmiller shorttermtransportstressandsupplementationalterimmunefunctioninagedhorses AT patriciaaharris shorttermtransportstressandsupplementationalterimmunefunctioninagedhorses AT virginiadbarker shorttermtransportstressandsupplementationalterimmunefunctioninagedhorses AT amandaaadams shorttermtransportstressandsupplementationalterimmunefunctioninagedhorses |
_version_ |
1718374634990075904 |