Abstract:
:Astrocytes are key cells in brain aging, helping neurons to undertake healthy aging or otherwise letting them enter into a spiral of neurodegeneration. We aimed to characterize astrocytes cultured from senescence-accelerated prone 8 (SAMP8) mice, a mouse model of brain pathological aging, along with the effects of caloric restriction, the most effective rejuvenating treatment known so far. Analysis of the transcriptomic profiles of SAMP8 astrocytes cultured in control conditions and treated with caloric restriction serum was performed using mRNA microarrays. A decrease in mitochondrial and ribosome mRNA, which was restored by caloric restriction, confirmed the age-related profile of SAMP8 astrocytes and the benefits of caloric restriction. An amelioration of antioxidant and neurodegeneration-related pathways confirmed the brain benefits of caloric restriction. Studies of oxidative stress and mitochondrial function demonstrated a reduction of oxidative damage and partial improvement of mitochondria after caloric restriction. In summary, caloric restriction showed a significant tendency to normalize pathologically aged astrocytes through the activation of pathways that are protective against the age-related deterioration of brain physiology.
journal_name
Aging Celljournal_title
Aging cellauthors
García-Matas S,Paul RK,Molina-Martínez P,Palacios H,Gutierrez VM,Corpas R,Pallas M,Cristòfol R,de Cabo R,Sanfeliu Cdoi
10.1111/acel.12259subject
Has Abstractpub_date
2015-06-01 00:00:00pages
334-44issue
3eissn
1474-9718issn
1474-9726journal_volume
14pub_type
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