NMR and Mass Spectroscopy Based Comparison of Blood Metabolites from Dantrolene and SR59230A Treated Arctic Ground Squirrels
Arctic ground squirrels (AGS) hibernate during winter, undergoing cycles of torpor, where body temperatures plummet as low as −3°C followed by rapid rewarming to 37°C during interbout arousals (IBA). While IBAs only occur in certain species that experience torpor, they offer a unique model into whic...
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Online Access: | http://dx.doi.org/10.1096/fasebj.2020.34.s1.09760 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1096%2Ffasebj.2020.34.s1.09760 http://onlinelibrary.wiley.com/wol1/doi/10.1096/fasebj.2020.34.s1.09760/fullpdf |
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crwiley:10.1096/fasebj.2020.34.s1.09760 2024-06-02T08:01:59+00:00 NMR and Mass Spectroscopy Based Comparison of Blood Metabolites from Dantrolene and SR59230A Treated Arctic Ground Squirrels Macander, Sophia Johannsen, Michelle Hunstiger, Moriah Murphy, Carl Thao, Shelly Oliver, S. Ryan 2020 http://dx.doi.org/10.1096/fasebj.2020.34.s1.09760 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1096%2Ffasebj.2020.34.s1.09760 http://onlinelibrary.wiley.com/wol1/doi/10.1096/fasebj.2020.34.s1.09760/fullpdf en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor The FASEB Journal volume 34, issue S1, page 1-1 ISSN 0892-6638 1530-6860 journal-article 2020 crwiley https://doi.org/10.1096/fasebj.2020.34.s1.09760 2024-05-03T11:18:18Z Arctic ground squirrels (AGS) hibernate during winter, undergoing cycles of torpor, where body temperatures plummet as low as −3°C followed by rapid rewarming to 37°C during interbout arousals (IBA). While IBAs only occur in certain species that experience torpor, they offer a unique model into which one can observe the specific mechanisms responsible for thermogenesis. Rapid rewarming at IBA onset increases AGS body temperature above 15°C through the activation of brown adipose tissue (BAT). Above 15°C, shivering thermogenesis is able to contribute to warming back up to original body temperature. However, the relative contributions of these two thermogenic processes during IBA is not well understood. AGS were treated across periods of coupled torpor cycles, whereby during the second cycle AGS were treated with either carrier (control) or a selected inhibitor. BAT inhibition using SR59230A, a β3‐adrenergic receptor inhibitor, would be expected to strain the rapid heat production. Shivering thermogenesis utilizes calcium cycling and the Ryanodine receptor in skeletal muscles; the use of dantrolene reduces the thermogenic mechanism needed to reach 37°, effectively inhibiting the Ryanodine receptor in muscle. Relative concentrations of blood plasma metabolites were quantified using nuclear magnetic resonance (NMR) to compare whole and polar extracted plasma. The NMR method was compared against full metabolomic analysis performed using liquid chromatography tandem mass spectroscopy (LC MS‐MS). NMR analysis resulted in higher peak resolution quality and increased metabolite identification in polar and lipid extraction samples compared to whole samples, whereas LC MS‐MS provided a greater abundance of metabolites. Overall, total metabolites were significantly reduced during hibernation. Dantrolene treated AGS had alterations in metabolites indicative of increased energy demand. Furthermore, SR treatment resulted in profiles describing decreased beta‐oxidation and generally lower total metabolites compared to ... Article in Journal/Newspaper Arctic Wiley Online Library Arctic The FASEB Journal 34 S1 1 1 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Arctic ground squirrels (AGS) hibernate during winter, undergoing cycles of torpor, where body temperatures plummet as low as −3°C followed by rapid rewarming to 37°C during interbout arousals (IBA). While IBAs only occur in certain species that experience torpor, they offer a unique model into which one can observe the specific mechanisms responsible for thermogenesis. Rapid rewarming at IBA onset increases AGS body temperature above 15°C through the activation of brown adipose tissue (BAT). Above 15°C, shivering thermogenesis is able to contribute to warming back up to original body temperature. However, the relative contributions of these two thermogenic processes during IBA is not well understood. AGS were treated across periods of coupled torpor cycles, whereby during the second cycle AGS were treated with either carrier (control) or a selected inhibitor. BAT inhibition using SR59230A, a β3‐adrenergic receptor inhibitor, would be expected to strain the rapid heat production. Shivering thermogenesis utilizes calcium cycling and the Ryanodine receptor in skeletal muscles; the use of dantrolene reduces the thermogenic mechanism needed to reach 37°, effectively inhibiting the Ryanodine receptor in muscle. Relative concentrations of blood plasma metabolites were quantified using nuclear magnetic resonance (NMR) to compare whole and polar extracted plasma. The NMR method was compared against full metabolomic analysis performed using liquid chromatography tandem mass spectroscopy (LC MS‐MS). NMR analysis resulted in higher peak resolution quality and increased metabolite identification in polar and lipid extraction samples compared to whole samples, whereas LC MS‐MS provided a greater abundance of metabolites. Overall, total metabolites were significantly reduced during hibernation. Dantrolene treated AGS had alterations in metabolites indicative of increased energy demand. Furthermore, SR treatment resulted in profiles describing decreased beta‐oxidation and generally lower total metabolites compared to ... |
format |
Article in Journal/Newspaper |
author |
Macander, Sophia Johannsen, Michelle Hunstiger, Moriah Murphy, Carl Thao, Shelly Oliver, S. Ryan |
spellingShingle |
Macander, Sophia Johannsen, Michelle Hunstiger, Moriah Murphy, Carl Thao, Shelly Oliver, S. Ryan NMR and Mass Spectroscopy Based Comparison of Blood Metabolites from Dantrolene and SR59230A Treated Arctic Ground Squirrels |
author_facet |
Macander, Sophia Johannsen, Michelle Hunstiger, Moriah Murphy, Carl Thao, Shelly Oliver, S. Ryan |
author_sort |
Macander, Sophia |
title |
NMR and Mass Spectroscopy Based Comparison of Blood Metabolites from Dantrolene and SR59230A Treated Arctic Ground Squirrels |
title_short |
NMR and Mass Spectroscopy Based Comparison of Blood Metabolites from Dantrolene and SR59230A Treated Arctic Ground Squirrels |
title_full |
NMR and Mass Spectroscopy Based Comparison of Blood Metabolites from Dantrolene and SR59230A Treated Arctic Ground Squirrels |
title_fullStr |
NMR and Mass Spectroscopy Based Comparison of Blood Metabolites from Dantrolene and SR59230A Treated Arctic Ground Squirrels |
title_full_unstemmed |
NMR and Mass Spectroscopy Based Comparison of Blood Metabolites from Dantrolene and SR59230A Treated Arctic Ground Squirrels |
title_sort |
nmr and mass spectroscopy based comparison of blood metabolites from dantrolene and sr59230a treated arctic ground squirrels |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1096/fasebj.2020.34.s1.09760 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1096%2Ffasebj.2020.34.s1.09760 http://onlinelibrary.wiley.com/wol1/doi/10.1096/fasebj.2020.34.s1.09760/fullpdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
The FASEB Journal volume 34, issue S1, page 1-1 ISSN 0892-6638 1530-6860 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1096/fasebj.2020.34.s1.09760 |
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The FASEB Journal |
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34 |
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S1 |
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1 |
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1800746482401280000 |