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ABSTRACT:
ORGANISM(S): Mus musculus
SUBMITTER: Kevin Becker
PROVIDER: E-GEOD-904 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
Similar Datasets
Project description:To assess the transcriptional changes in different brain regions and spinal cord associated with aging and either a caloric restricted (CR) or ad libitum (AL) diet. cDNA microarray and quantitative PCR analyses were used to examine the transcriptomes of various neuronal tissues in young, middle aged and old mice. Mice of both genders were examined as well as the effects of their placement on either caloric restricted (CR) or ad libitum (AL) diets. Keywords: age-, gender-, and diet- comparison 67 mice were compared according to age, gender, and diet
2009-06-21 | E-GEOD-8409 | biostudies-arrayexpress
Project description:Analysis of the effect of aging and caloric restriction on liver tissue Keywords: other
2004-11-24 | GSE904 | GEO
Project description: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 path- ways confirmed the brain benefits of caloric restriction. Studies of oxidative stress and mitochondrial function demonstrated a reduction of oxidative damage and partial improvement of mito- chondria 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. Key words: astrocytes; caloric restriction; mitochondria; oxidative stress; RNA microarrays; SAMP8. Primary cultures enriched in astrocytes were obtained from cerebral cortical tissue from 2-day-old SAMP8 and SAMR1 mice. Astrocyte cultures were established and experiments were routinely carried out after 21 days in culture. Established astrocyte cultures of both SAMR1 and SAMP8 consisted of 85-90% astrocytes, 10-15% microglia and 0.1-1% oligodendroglia. Sera from rats subjected to ad libitum (AL) diet and to CR were obtained as described for the establishment of the CR in vitro model (de Cabo et al., 2003). Serum was heat inactivated at 56°C prior to use in astrocyte culture experiments. Treatment in vitro was performed by adding 10% volume CR or AL serum onto the astrocyte culture medium for 48 h, the cells were harvested and RNA was extracted for the microarray studies. Three biological replicates for each condition were done and RNA was extracted for the microarray studies. Please note that SAM models were developed from AKR/J by Kyoto University. Five litters with severe senescence were selected to further propagate and examine these characteristics. Litters that showed normal aging were selected as a senescence-resistant series (R-series). The genetic background of the SAM mice became suspect after the pathological findings were different from the AKR/J mouse. Each SAM model is genetically different. Each SAM colony was acquired by Harlan by Takeda Chemical Ltd. in 2002. And here is the link to the company site. http://www.harlan.com/products_and_services/research_models_and_services/research_models/sam_inbred_mice/samp8tahsd.hl
2015-06-23 | E-GEOD-60388 | biostudies-arrayexpress
Project description:To assess the transcriptional changes in different brain regions and spinal cord associated with aging and either a caloric restricted (CR) or ad libitum (AL) diet. cDNA microarray and quantitative PCR analyses were used to examine the transcriptomes of various neuronal tissues in young, middle aged and old mice. Mice of both genders were examined as well as the effects of their placement on either caloric restricted (CR) or ad libitum (AL) diets. To assess the transcriptional changes in different brain regions and spinal cord associated with aging and either a caloric restricted (CR) or ad libitum (AL) diet. cDNA microarray and quantitative PCR analyses were used to examine the transcriptomes of various neuronal tissues in young, middle aged and old mice. Mice of both genders were examined as well as the effects of their placement on either caloric restricted (CR) or ad libitum (AL) diets. Keywords: age-, gender-, and diet- comparison
2007-12-28 | GSE8418 | GEO
Project description:The SIRT1 deacetylase is one of the best-studied potential mediators of some of the anti-aging effects of calorie restriction (CR); but its role in CR-dependent lifespan extension has not been demonstrated. We previously found that mice lacking both copies of SIRT1 displayed a shorter median lifespan than wild type mice on an ad libitum diet. Here we report that median lifespan extension in CR heterozygote SIRT1+/- mice was identical (51%) to that observed in wild type mice but SIRT1+/- mice displayed a higher frequency of some certain pathologies. Although larger studies in different genetic backgrounds are necessary , these results provide strong initial evidence for the requirement of SIRT1 for the anti-aging effects of CR, but suggest that its high expression is not required for CR-induced lifespan extension. Key words: SIRT1, caloric restriction, lifespan, anti-aging 2-5 month old male mice of 3 different genotypes (SIRT1+/+, SIRT1+/-, and SIRT1-/-) that had normal, reduced or no expression of SIRT1 were treated with either a 40% caloric restricted diet (CR) or an ad libitum diet (AL). 2-4 replicates of each experimental condition were used in the analysis.
2014-04-25 | E-GEOD-46895 | biostudies-arrayexpress
Project description:To assess the transcriptional changes in different brain regions and spinal cord associated with aging and either a caloric restricted (CR) or ad libitum (AL) diet. cDNA microarray and quantitative PCR analyses were used to examine the transcriptomes of various neuronal tissues in young, middle aged and old mice. Mice of both genders were examined as well as the effects of their placement on either caloric restricted (CR) or ad libitum (AL) diets. Keywords: age-, gender-, and diet- comparison
2007-12-28 | GSE8411 | GEO
Project description:To assess the transcriptional changes in different brain regions and spinal cord associated with aging and either a caloric restricted (CR) or ad libitum (AL) diet. cDNA microarray and quantitative PCR analyses were used to examine the transcriptomes of various neuronal tissues in young, middle aged and old mice. Mice of both genders were examined as well as the effects of their placement on either caloric restricted (CR) or ad libitum (AL) diets. Keywords: age-, gender-, and diet- comparison
2009-06-22 | GSE8409 | GEO
Project description:To assess the transcriptional changes in different brain regions and spinal cord associated with aging and either a caloric restricted (CR) or ad libitum (AL) diet. cDNA microarray and quantitative PCR analyses were used to examine the transcriptomes of various neuronal tissues in young, middle aged and old mice. Mice of both genders were examined as well as the effects of their placement on either caloric restricted (CR) or ad libitum (AL) diets. Keywords: age-, gender-, and diet- comparison
2007-12-28 | GSE8413 | GEO
Project description:To assess the transcriptional changes in different brain regions and spinal cord associated with aging and either a caloric restricted (CR) or ad libitum (AL) diet. cDNA microarray and quantitative PCR analyses were used to examine the transcriptomes of various neuronal tissues in young, middle aged and old mice. Mice of both genders were examined as well as the effects of their placement on either caloric restricted (CR) or ad libitum (AL) diets. Keywords: age-, gender-, and diet- comparison
2007-12-28 | GSE8419 | GEO
Project description:To assess the transcriptional changes in different brain regions and spinal cord associated with aging and either a caloric restricted (CR) or ad libitum (AL) diet. cDNA microarray and quantitative PCR analyses were used to examine the transcriptomes of various neuronal tissues in young, middle aged and old mice. Mice of both genders were examined as well as the effects of their placement on either caloric restricted (CR) or ad libitum (AL) diets. Keywords: age-, gender-, and diet- comparison
2007-12-28 | GSE8417 | GEO