Abstract
Chronic kidney disease impairs physical performance. Here the time course and mechanism of muscle insufficiency in renal failure and the influence of dietary protein were studied using 5/6 nephrectomized C57Bl/6 mice, focusing on muscle mass and mitochondria. A decrease in muscle mitochondria and running distance was found in young (16-20 weeks) 5/6 nephrectomized mice, despite the preservation of muscle volume and power. However, a decrease in muscle volume, associated with a reduction in muscle power, was found in aged (48-52 weeks) 5/6 nephrectomized mice. A high-protein diet feeding from 8 weeks increased muscle volume and power in the mice; but this further decreased running distance. Activation of pyruvate dehydrogenase by dichloroacetate effectively recovered running distance that was decreased by dietary protein. These findings indicate the mechanism of muscle insufficiency in renal failure and suggest that activation of muscle mitochondria would serve as a potential strategy for improving the physical performance of the patients with chronic kidney disease.
| Original language | English |
|---|---|
| Pages (from-to) | 1330-1339 |
| Number of pages | 10 |
| Journal | Kidney International |
| Volume | 85 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2014 |
Fingerprint
Keywords
- chronic kidney disease
- mitochondria
- nutrition
ASJC Scopus subject areas
- Nephrology
- Medicine(all)
Cite this
Chronic kidney disease reduces muscle mitochondria and exercise endurance and its exacerbation by dietary protein through inactivation of pyruvate dehydrogenase. / Tamaki, Masanori; Miyashita, Kazutoshi; Wakino, Shu; Mitsuishi, Masanori; Hayashi, Koichi; Itoh, Hiroshi.
In: Kidney International, Vol. 85, No. 6, 2014, p. 1330-1339.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Chronic kidney disease reduces muscle mitochondria and exercise endurance and its exacerbation by dietary protein through inactivation of pyruvate dehydrogenase
AU - Tamaki, Masanori
AU - Miyashita, Kazutoshi
AU - Wakino, Shu
AU - Mitsuishi, Masanori
AU - Hayashi, Koichi
AU - Itoh, Hiroshi
PY - 2014
Y1 - 2014
N2 - Chronic kidney disease impairs physical performance. Here the time course and mechanism of muscle insufficiency in renal failure and the influence of dietary protein were studied using 5/6 nephrectomized C57Bl/6 mice, focusing on muscle mass and mitochondria. A decrease in muscle mitochondria and running distance was found in young (16-20 weeks) 5/6 nephrectomized mice, despite the preservation of muscle volume and power. However, a decrease in muscle volume, associated with a reduction in muscle power, was found in aged (48-52 weeks) 5/6 nephrectomized mice. A high-protein diet feeding from 8 weeks increased muscle volume and power in the mice; but this further decreased running distance. Activation of pyruvate dehydrogenase by dichloroacetate effectively recovered running distance that was decreased by dietary protein. These findings indicate the mechanism of muscle insufficiency in renal failure and suggest that activation of muscle mitochondria would serve as a potential strategy for improving the physical performance of the patients with chronic kidney disease.
AB - Chronic kidney disease impairs physical performance. Here the time course and mechanism of muscle insufficiency in renal failure and the influence of dietary protein were studied using 5/6 nephrectomized C57Bl/6 mice, focusing on muscle mass and mitochondria. A decrease in muscle mitochondria and running distance was found in young (16-20 weeks) 5/6 nephrectomized mice, despite the preservation of muscle volume and power. However, a decrease in muscle volume, associated with a reduction in muscle power, was found in aged (48-52 weeks) 5/6 nephrectomized mice. A high-protein diet feeding from 8 weeks increased muscle volume and power in the mice; but this further decreased running distance. Activation of pyruvate dehydrogenase by dichloroacetate effectively recovered running distance that was decreased by dietary protein. These findings indicate the mechanism of muscle insufficiency in renal failure and suggest that activation of muscle mitochondria would serve as a potential strategy for improving the physical performance of the patients with chronic kidney disease.
KW - chronic kidney disease
KW - mitochondria
KW - nutrition
UR - http://www.scopus.com/inward/record.url?scp=84901830404&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84901830404&partnerID=8YFLogxK
U2 - 10.1038/ki.2013.473
DO - 10.1038/ki.2013.473
M3 - Article
C2 - 24284514
AN - SCOPUS:84901830404
VL - 85
SP - 1330
EP - 1339
JO - Kidney International
JF - Kidney International
SN - 0085-2538
IS - 6
ER -