Dietary antioxidants attenuate the endocrine stress response during long-duration flight of a migratory bird
| العنوان: | Dietary antioxidants attenuate the endocrine stress response during long-duration flight of a migratory bird |
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| المؤلفون: | Barbara J. Pierce, Edyta T. Sadowska, Scott R. McWilliams, Ulf Bauchinger, Lisa Trost, Amadeusz Bryła, Kristen J. DeMoranville, Stefania Casagrande, Maciej Dzialo |
| المصدر: | Proc Biol Sci |
| بيانات النشر: | The Royal Society, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | 0106 biological sciences, Hypothalamo-Hypophyseal System, medicine.medical_specialty, Cellular respiration, Pituitary-Adrenal System, Biology, 010603 evolutionary biology, 01 natural sciences, anthocyanin, Antioxidants, General Biochemistry, Genetics and Molecular Biology, 03 medical and health sciences, chemistry.chemical_compound, Stress, Physiological, Corticosterone, Internal medicine, medicine, Animals, Endocrine system, 030304 developmental biology, General Environmental Science, chemistry.chemical_classification, 0303 health sciences, Reactive oxygen species, exercise, Ecology, General Immunology and Microbiology, Catabolism, corticosterone, HPA axis, fungi, food and beverages, General Medicine, Metabolism, Diet, flight, Metabolic pathway, antioxidants, Endocrinology, chemistry, Starlings, Animal Migration, General Agricultural and Biological Sciences, Hormone |
| الوصف: | Glucocorticoids (GCs) are metabolic hormones that promote catabolic processes, which release stored energy and support high metabolic demands such as during prolonged flights of migrating birds. Dietary antioxidants (e.g. anthocyanins) support metabolism by quenching excess reactive oxygen species produced during aerobic metabolism and also by activating specific metabolic pathways. For example, similar to GCs' function, anthocyanins promote the release of stored energy, although the extent of complementarity between GCs and dietary antioxidants is not well known. If anthocyanins complement GCs functions, birds consuming anthocyanin-rich food can be expected to limit the secretion of GCs when coping with a metabolically challenging activity, avoiding the exposure to potential hormonal detrimental effects. We tested this hypothesis in European starlings ( Sturnus vulgaris ) flying in a wind tunnel. We compared levels of corticosterone, the main avian GC, immediately after a sustained flight and at rest for birds that were fed diets with or without an anthocyanin supplement. As predicted, we found (i) higher corticosterone after flight than at rest in both diet groups and (ii) anthocyanin-supplemented birds had less elevated corticosterone after flight than unsupplemented control birds. This provides novel evidence that dietary antioxidants attenuate the activation of the HPA axis (i.e. increased secretion of corticosterone) during long-duration flight. |
| تدمد: | 1471-2954 0962-8452 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d111ae6cabfa52203cf70bde34f28ceb https://doi.org/10.1098/rspb.2020.0744 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....d111ae6cabfa52203cf70bde34f28ceb |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14712954 09628452 |
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