Details:

Alternative Title:
Aging (Albany NY)
Personal Author:
Choksi, Kashyap B. ; Nuss, Jonathan E. ; DeFord, James H. ; Papaconstantinou, John
Choksi, Kashyap B. ; Nuss, Jonathan E. ; DeFord, James H. ; Papaconstantinou, John Less -
Description:
The age-associated decline in tissue function has been attributed to ROS-mediated oxidative damage due to mitochondrial dysfunction. The long-lived Ames dwarf mouse exhibits resistance to oxidative stress, a physiological characteristic of longevity. It is not known, however, whether there are differences in the electron transport chain (ETC) functions in Ames tissues that are associated with their longevity. In these studies we analyzed enzyme activities of ETC complexes, CI-CV and the coupled CI-CII and CII-CIII activities of mitochondria from several tissues of young, middle aged and old Ames dwarf mice and their corresponding wild type controls to identify potential mitochondrial prolongevity functions. Our studies indicate that post-mitotic heart and skeletal muscle from Ames and wild-type mice show similar changes in ETC complex activities with aging, with the exception of complex IV. Furthermore, the kidney, a slowly proliferating tissue, shows dramatic differences in ETC functions unique to the Ames mice. Our data show that there are tissue specific mitochondrial functions that are characteristic of certain tissues of the long-lived Ames mouse. We propose that this may be a factor in the determination of extended lifespan of dwarf mice.
Subjects:
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Aging Ames Dwarf Mice Animals Dwarfism Electron Transport Chain Activity Electron Transport Chain Complex Proteins Gene Expression Regulation Homeodomain Proteins Kidney Longevity Mice Mice, Inbred Strains Mitochondria, Heart Mitochondria, Muscle Mitochondrial Function Mutation Oxidative Stress Research Paper
Source:
Aging (Albany NY). 2011; 3(8):754-767.
Pubmed ID:
21934186
Pubmed Central ID:
PMC3184977
Document Type:
Journal Article
Funding:
1 P30 AG024832-03/AG/NIA NIH HHS/United States ; 1P01 AG021830/AG/NIA NIH HHS/United States ; P30 AG024832/AG/NIA NIH HHS/United States ; T32-EH07254/EH/NCEH CDC HHS/United States
1 P30 AG024832-03/AG/NIA NIH HHS/United States ; 1P01 AG021830/AG/NIA NIH HHS/United States ; P30 AG024832/AG/NIA NIH HHS/United States ; T32-EH07254/EH/NCEH CDC HHS/United States Less -
Collection(s):
CDC Public Access
Main Document Checksum:
[+]
urn:sha256:198ec4f83b5cd44168c7dedb1db3ce8a3c1fe2b45c9c63a9d81ea4e269573422
Download URL:
https://stacks.cdc.gov/view/cdc/22780/cdc_22780_DS1.pdf
File Type:

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