Calcium kinetics and energetics in myocardium. Simulation study.
Calcium kinetics and energetics in myocardium. Simulation study.
复制标题
心肌中的钙动力学和能量学。
DOI:
10.1536/ihj.32.57
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发表时间:
1991
期刊:
影响因子:
--
通讯作者:
T. Takasago
中科院分区:
文献类型:
--
作者:
H. Suga;Y. Goto;S. Futaki;O. Kawaguchi;H. Yaku;K. Hata;T. Takasago
We carried out a simulation study to obtain insight into the relation between calcium (Ca2+) transients and energy for handling Ca2+ in excitation-contraction (EC) coupling. The simulation incorporated basic Ca2+ kinetics among total released Ca2+ from sarcoplasmic reticulum (SR), myoplasmic free Ca2+ ion concentration, and troponin (Tn)-Ca complex concentration ([TnCa]). The total Ca2+ released from the SR was arbitrarily set as an impulse and three rate constants were used for Ca2+ binding to Tn, Ca2+ dissociation from Tn, and Ca2+ uptake by SR. The results showed that the peak Ca2+ transient varies widely as a reciprocal of the Ca2+ sensitivity of the contractile machinery, despite constant total released Ca2+ and hence, a constant energy for Ca2+ handling. This result suggests a disproportate relationship between the magnitude of Ca2+ transients and the energy for Ca2+ handling when the Ca2+ sensitivity of contractile machinery changes.
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影响因子:
37.8
作者:
M. Endoh;T. Yanagisawa;N. Taira;Blinks
通讯作者:
M. Endoh;T. Yanagisawa;N. Taira;Blinks
DOI:
10.1016/s0021-9258(19)70187-2
发表时间:
1980-12
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
M. Holroyde;S. P. Robertson;J. Johnson;R. Solaro;J. D. Potter
通讯作者:
M. Holroyde;S. P. Robertson;J. Johnson;R. Solaro;J. D. Potter
影响因子:
20.1
作者:
KUSUOKA, H;KORETSUNE, Y;MARBAN, E
通讯作者:
MARBAN, E
影响因子:
3.4
作者:
ROBERTSON, SP;JOHNSON, JD;POTTER, JD
通讯作者:
POTTER, JD
影响因子:
37.8
作者:
Blinks,JR;Endoh,M
通讯作者:
Endoh,M