| Literature DB >> 10795720 |
D A Lowe1, H Degens, K D Chen, S E Alway.
Abstract
Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) mRNA, protein, and enzyme activity levels in hindlimb muscles of adult and senescent Fischer 344 x Brown Norway rats were investigated. Soleus muscles from adult and senescent rats had similar levels of GAPDH. In contrast, muscles containing a large proportion of glycolytic fibers had lower GAPDH levels in senescent rats relative to these muscles in adult rats; this was observed at both the mRNA and protein levels. These data indicate that skeletal muscle glycolytic capacity of fast muscles is diminished with age and that it may be caused by changes at the level of transcription. Also, because GAPDH mRNA levels change with age in several rat muscles, GAPDH mRNA is not always a proper internal control for mRNA analyses of aging skeletal muscle.Entities:
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Year: 2000 PMID: 10795720 DOI: 10.1093/gerona/55.3.b160
Source DB: PubMed Journal: J Gerontol A Biol Sci Med Sci ISSN: 1079-5006 Impact factor: 6.053