Acute exercise causes mitochondrial DNA deletion in rat skeletal muscle
โ Scribed by Yasutomo Sakai; Yukio Iwamura; Jun-Ichi Hayashi; Nao Yamamoto; Norio Ohkoshi; Hiroshi Nagata
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 588 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0148-639X
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โฆ Synopsis
The present study was conducted to determine the effects of acute overload exercise on mitochondrial DNA and the structure of skeletal muscles. Rats were forced to run for 20 min until reaching complete exhaustion. We detected the large-scale deletion (7052 bp) of mitochondrial DNA by the nested polymerase chain reaction, and also observed mitochondrial ultrastructural changes in the soleus muscle.
๐ SIMILAR VOLUMES
## Abstract We used ^31^P magnetic resonance spectroscopy to compare the response of rat skeletal muscle to three kinds of proton load. During __exercise__ (tetanic sciatic nerve stimulation), protons from lactic acid were buffered passively and consumed by net hydrolysis of phosphocreatine (PCr).
The abundance of mitochondrial DNA (mtDNA) deletions has been shown to increase with age in a number of species and may contribute to the aging process. Estimating the total mtDNA deletion load of an individual is essential in evaluating the potential physiological impact. In this study, we compared