Rapamycin and Dietary Restriction Induce Metabolically Distinctive Changes in Mouse Liver Public Deposited

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  • Dietary restriction (DR) is the gold standard intervention used to delay aging, and much recent research has focused on the identification of possible DR mimetics. Energy sensing pathways, including insulin/IGF1 signaling, sirtuins, and mammalian Target of Rapamycin (mTOR), have been proposed as pathways involved in the antiaging actions of DR, and compounds that affect these pathways have been suggested to act as DR mimetics, including metformin (insulin/IGF1 signaling), resveratrol (sirtuins), and rapamycin (mTOR). Rapamycin is a promising DR mimetic because it significantly increases both health span and life span in mice. Unfortunately, rapamycin also leads to some negative effects, foremost among which is the induction of insulin resistance, potentially limiting its translation into humans. To begin clarifying the mechanism(s) involved in insulin resistance induced by rapamycin, we compared several aspects of liver metabolism in mice treated with DR or rapamycin for 6 months. Our data suggest that although both DR and rapamycin inhibit lipogenesis, activate lipolysis, and increased serum levels of nonesterified fatty acids, only DR further activates β-oxidation of the fatty acids leading to the production of ketone bodies.
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  • Yu, Z., Wang, R., Fok, W. C., Coles, A., Salmon, A. B., & Pérez, V. I. (2015). Rapamycin and Dietary Restriction Induce Metabolically Distinctive Changes in Mouse Liver. The Journals of Gerontology Series A: Biological Sciences and Medical Sciences, 70(4), 410-420. doi:10.1093/gerona/glu053
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  • description.provenance : Submitted by Deanne Bruner (deanne.bruner@oregonstate.edu) on 2014-05-16T17:38:29Z No. of bitstreams: 3 PerezVivianaBiochemistryRapamycinDietaryRestriction (5).pdf: 601165 bytes, checksum: cf0baa5846cafc3e3ecfb22bf73b57a4 (MD5) PerezVivianaBiochemistryRapamycinDietaryRestrictionFigures (3).pdf: 699087 bytes, checksum: cdf4a402f2eb974a89086c60c08e3ed8 (MD5) PerezVivianaBiochemistryRapamycinDietaryRestrictionTables (3).pdf: 250671 bytes, checksum: 33f8ea13bbf120023c28830e8522d38b (MD5)
  • description.provenance : Approved for entry into archive by Deanne Bruner(deanne.bruner@oregonstate.edu) on 2014-05-16T17:39:36Z (GMT) No. of bitstreams: 3 PerezVivianaBiochemistryRapamycinDietaryRestriction (5).pdf: 601165 bytes, checksum: cf0baa5846cafc3e3ecfb22bf73b57a4 (MD5) PerezVivianaBiochemistryRapamycinDietaryRestrictionFigures (3).pdf: 699087 bytes, checksum: cdf4a402f2eb974a89086c60c08e3ed8 (MD5) PerezVivianaBiochemistryRapamycinDietaryRestrictionTables (3).pdf: 250671 bytes, checksum: 33f8ea13bbf120023c28830e8522d38b (MD5)
  • description.provenance : Made available in DSpace on 2014-05-16T17:39:36Z (GMT). No. of bitstreams: 3 PerezVivianaBiochemistryRapamycinDietaryRestriction (5).pdf: 601165 bytes, checksum: cf0baa5846cafc3e3ecfb22bf73b57a4 (MD5) PerezVivianaBiochemistryRapamycinDietaryRestrictionFigures (3).pdf: 699087 bytes, checksum: cdf4a402f2eb974a89086c60c08e3ed8 (MD5) PerezVivianaBiochemistryRapamycinDietaryRestrictionTables (3).pdf: 250671 bytes, checksum: 33f8ea13bbf120023c28830e8522d38b (MD5) Previous issue date: 2014-04-22

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