HOW DO THEY DO IT? USING OMICS APPROACHES TO EXPLORE METABOLIC RESPONSES ASSOCIATED WITH HYPOXIA AND EXERCISE TOLERANCE IN THE DEEPEST DIVING PINNIPED
Marine mammals such as northern elephant seals (NES) routinely experience hypoxemia and ischemia-reperfusion events to many tissues during deep dives with no apparent adverse effects. Adaptations to diving include increased antioxidants and elevated oxygen storage capacity associated with high hemop...
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ftunivpacificdc:oai:scholarlycommons.pacific.edu:uop_etds-4813 2023-08-27T04:09:16+02:00 HOW DO THEY DO IT? USING OMICS APPROACHES TO EXPLORE METABOLIC RESPONSES ASSOCIATED WITH HYPOXIA AND EXERCISE TOLERANCE IN THE DEEPEST DIVING PINNIPED Piotrowski, Elizabeth R. 2022-01-01T08:00:00Z application/pdf https://scholarlycommons.pacific.edu/uop_etds/3815 https://scholarlycommons.pacific.edu/context/uop_etds/article/4813/viewcontent/Piotrowski_pacific_0173N_10742.pdf unknown Scholarly Commons https://scholarlycommons.pacific.edu/uop_etds/3815 https://scholarlycommons.pacific.edu/context/uop_etds/article/4813/viewcontent/Piotrowski_pacific_0173N_10742.pdf University of the Pacific Theses and Dissertations diving physiology exercise tolerance hypoxia tolerance marine mammals proteomics transcriptomics Biology Animal Sciences Life Sciences Marine Biology text 2022 ftunivpacificdc 2023-08-07T21:57:49Z Marine mammals such as northern elephant seals (NES) routinely experience hypoxemia and ischemia-reperfusion events to many tissues during deep dives with no apparent adverse effects. Adaptations to diving include increased antioxidants and elevated oxygen storage capacity associated with high hemoprotein content in blood and muscle. Despite experiencing decreased oxygen tensions during diving, NES likely rely on the mobilization of large lipids stores and catabolism of fatty acids to provide energy to exercising muscle while diving. To identify potential regulatory mechanisms that may underly hypoxia and exercise tolerance in diving mammals, this study used system-wide approaches to characterize changes in genes and proteins in two metabolically active tissues (skeletal muscle and blubber) and whole blood of NES over development and in response to translocation. Specifically, this study profiled muscle and blood gene expression associated with regulation of oxidative stress and inflammatory pathways in weaned pups, juveniles, and adult NES as well as evaluated muscle and blubber transcriptomic and proteomic responses to swimming and diving in juvenile NES. I found that expression of genes associated with mitochondrial biogenesis (PGC1A, ESRRA, ESRRG), immune system activation (HMOX2, IL1B, NRF2, BVR, IL10), and protection from lipid peroxidation (GPX4, PRDX6, PRDX1, SIRT1) increased over postnatal development in muscle and whole blood of NES, providing a potential ontogenic mechanism for increasing diving capacity and hypoxia and ischemia-reperfusion tolerance. I also found that expression of genes and abundance of proteins associated with lipid transport (APOD, ABCA6, ABCA8, ABCA10, CD1E), lipid catabolism (ADIPOQ , ENPP6), and adipogenesis (DLK1, ADIRF,) increased, while those associated with insulin sensitivity and energy expenditure (APLN, VGF) decreased in response to swimming and diving in juvenile NES blubber and muscle, suggesting potential mechanisms for fuel provisioning to muscle during exercise in ... Text Elephant Seals University of the Pacific: Scholarly Commons Nes ENVELOPE(7.634,7.634,62.795,62.795) Nes’ ENVELOPE(44.681,44.681,66.600,66.600) |
institution |
Open Polar |
collection |
University of the Pacific: Scholarly Commons |
op_collection_id |
ftunivpacificdc |
language |
unknown |
topic |
diving physiology exercise tolerance hypoxia tolerance marine mammals proteomics transcriptomics Biology Animal Sciences Life Sciences Marine Biology |
spellingShingle |
diving physiology exercise tolerance hypoxia tolerance marine mammals proteomics transcriptomics Biology Animal Sciences Life Sciences Marine Biology Piotrowski, Elizabeth R. HOW DO THEY DO IT? USING OMICS APPROACHES TO EXPLORE METABOLIC RESPONSES ASSOCIATED WITH HYPOXIA AND EXERCISE TOLERANCE IN THE DEEPEST DIVING PINNIPED |
topic_facet |
diving physiology exercise tolerance hypoxia tolerance marine mammals proteomics transcriptomics Biology Animal Sciences Life Sciences Marine Biology |
description |
Marine mammals such as northern elephant seals (NES) routinely experience hypoxemia and ischemia-reperfusion events to many tissues during deep dives with no apparent adverse effects. Adaptations to diving include increased antioxidants and elevated oxygen storage capacity associated with high hemoprotein content in blood and muscle. Despite experiencing decreased oxygen tensions during diving, NES likely rely on the mobilization of large lipids stores and catabolism of fatty acids to provide energy to exercising muscle while diving. To identify potential regulatory mechanisms that may underly hypoxia and exercise tolerance in diving mammals, this study used system-wide approaches to characterize changes in genes and proteins in two metabolically active tissues (skeletal muscle and blubber) and whole blood of NES over development and in response to translocation. Specifically, this study profiled muscle and blood gene expression associated with regulation of oxidative stress and inflammatory pathways in weaned pups, juveniles, and adult NES as well as evaluated muscle and blubber transcriptomic and proteomic responses to swimming and diving in juvenile NES. I found that expression of genes associated with mitochondrial biogenesis (PGC1A, ESRRA, ESRRG), immune system activation (HMOX2, IL1B, NRF2, BVR, IL10), and protection from lipid peroxidation (GPX4, PRDX6, PRDX1, SIRT1) increased over postnatal development in muscle and whole blood of NES, providing a potential ontogenic mechanism for increasing diving capacity and hypoxia and ischemia-reperfusion tolerance. I also found that expression of genes and abundance of proteins associated with lipid transport (APOD, ABCA6, ABCA8, ABCA10, CD1E), lipid catabolism (ADIPOQ , ENPP6), and adipogenesis (DLK1, ADIRF,) increased, while those associated with insulin sensitivity and energy expenditure (APLN, VGF) decreased in response to swimming and diving in juvenile NES blubber and muscle, suggesting potential mechanisms for fuel provisioning to muscle during exercise in ... |
format |
Text |
author |
Piotrowski, Elizabeth R. |
author_facet |
Piotrowski, Elizabeth R. |
author_sort |
Piotrowski, Elizabeth R. |
title |
HOW DO THEY DO IT? USING OMICS APPROACHES TO EXPLORE METABOLIC RESPONSES ASSOCIATED WITH HYPOXIA AND EXERCISE TOLERANCE IN THE DEEPEST DIVING PINNIPED |
title_short |
HOW DO THEY DO IT? USING OMICS APPROACHES TO EXPLORE METABOLIC RESPONSES ASSOCIATED WITH HYPOXIA AND EXERCISE TOLERANCE IN THE DEEPEST DIVING PINNIPED |
title_full |
HOW DO THEY DO IT? USING OMICS APPROACHES TO EXPLORE METABOLIC RESPONSES ASSOCIATED WITH HYPOXIA AND EXERCISE TOLERANCE IN THE DEEPEST DIVING PINNIPED |
title_fullStr |
HOW DO THEY DO IT? USING OMICS APPROACHES TO EXPLORE METABOLIC RESPONSES ASSOCIATED WITH HYPOXIA AND EXERCISE TOLERANCE IN THE DEEPEST DIVING PINNIPED |
title_full_unstemmed |
HOW DO THEY DO IT? USING OMICS APPROACHES TO EXPLORE METABOLIC RESPONSES ASSOCIATED WITH HYPOXIA AND EXERCISE TOLERANCE IN THE DEEPEST DIVING PINNIPED |
title_sort |
how do they do it? using omics approaches to explore metabolic responses associated with hypoxia and exercise tolerance in the deepest diving pinniped |
publisher |
Scholarly Commons |
publishDate |
2022 |
url |
https://scholarlycommons.pacific.edu/uop_etds/3815 https://scholarlycommons.pacific.edu/context/uop_etds/article/4813/viewcontent/Piotrowski_pacific_0173N_10742.pdf |
long_lat |
ENVELOPE(7.634,7.634,62.795,62.795) ENVELOPE(44.681,44.681,66.600,66.600) |
geographic |
Nes Nes’ |
geographic_facet |
Nes Nes’ |
genre |
Elephant Seals |
genre_facet |
Elephant Seals |
op_source |
University of the Pacific Theses and Dissertations |
op_relation |
https://scholarlycommons.pacific.edu/uop_etds/3815 https://scholarlycommons.pacific.edu/context/uop_etds/article/4813/viewcontent/Piotrowski_pacific_0173N_10742.pdf |
_version_ |
1775350428177793024 |