Administration of a creatine analogue induces isomyosin transitions in muscle.
Administration of a creatine analogue induces isomyosin transitions in muscle.
复制标题
肌酸类似物的施用会诱导肌肉中的异肌球蛋白转变。
DOI:
10.1152/ajpcell.1989.257.4.c810
复制
发表时间:
1989
期刊:
影响因子:
--
通讯作者:
Kushmerick,MJ
中科院分区:
文献类型:
--
作者:
Moerland,TS;Wolf,NG;Kushmerick,MJ
A creatine analogue, beta-guanidinopropionic acid (beta-GPA), was administered in the food (2% wt/wt) and the water (0.5% wt/vol) of male CD-1 mice. Uptake of the phosphorylated analogue and depletion of phosphocreatine in hindlimb muscle was monitored by 31P nuclear magnetic resonance and was found to be complete within 7 wk. After this time, the isomyosin composition of soleus, extensor digitorum longus (EDL), and ventricle was analyzed by pyrophosphate gel electrophoresis. The analogue was found to induce significant alterations in the type of myosin expressed in soleus and EDL. Normal soleus contains both intermediate (IM) and slow (SM) myosins, and treatment reduced the relative content of IM by approximately 50%. In EDL, treatment decreased fast isomyosin FM3 by 60% compared with controls. Sodium dodecyl sulfate-gel electrophoresis also showed a decrease of parvalbumin in EDL by approximately 50%. Treatment had no significant effect on the isomyosin composition of heart ventricle. Levels of physical activity and concentrations of serum glucose and thyroxine of treated mice were not significantly different from controls. These results indicate a role for intracellular energetics in mediating adaptive changes in the phenotype of muscle in mature animals.
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DOI:
--
发表时间:
1982
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Crow,MT;Kushmerick,MJ
通讯作者:
Kushmerick,MJ
影响因子:
15
作者:
G. Rowley;A. Greenleaf;G. L. Kenyon
通讯作者:
G. L. Kenyon
DOI:
--
发表时间:
1983
期刊:
Journal of Physiology
影响因子:
--
作者:
R. Fitzsimons;J. Hoh
通讯作者:
J. Hoh
影响因子:
2.1
作者:
G. W. Mainwood;K. Rakušan
通讯作者:
K. Rakušan
影响因子:
4.1
作者:
J. Hoh;P. A. McGrath;R. White
通讯作者:
R. White