Matching ATP supply and demand in mammalian heart: in vivo, in vitro, and in silico perspectives.
Matching ATP supply and demand in mammalian heart: in vivo, in vitro, and in silico perspectives.
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DOI:
10.1111/j.1749-6632.2009.05093.x
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发表时间:
2010-02
影响因子:
5.2
通讯作者:
Sollott SJ
中科院分区:
文献类型:
--
作者:
Yaniv Y;Juhaszova M;Nuss HB;Wang S;Zorov DB;Lakatta EG;Sollott SJ
Although the heart rapidly adapts cardiac output to match the body’s circulatory demands, the regulatory mechanisms ensuring that sufficient ATP is available to perform the required cardiac work are not completely understood. Two mechanisms have been suggested to serve as key regulators: (1) ADP and Pi concentrations—ATP utilization/hydrolysis in the cytosol increases ADP and Pi fluxes to mitochondria and hence the amount of available substrates for ATP production increases; and (2) Ca2+ concentration—ATP utilization/hydrolysis is coupled to changes in free cytosolic calcium and mitochondrial calcium, the latter controlling Ca2+-dependent activation of mitochondrial enzymes taking part in ATP production. Here we discuss the evolving perspectives of each of the putative regulatory mechanisms and the precisemolecular targets (dehydrogenase enzymes, ATP synthase) based on existing experimental and theoretical evidence. The data synthesis can generate novel hypotheses and experimental designs to solve the ongoing enigma of energy supply–demand matching in the heart.
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DOI:
10.1196/annals.1380.013
发表时间:
2006-01-01
期刊:
INTERACTIVE AND INTEGRATIVE CARDIOLOGY
影响因子:
--
作者:
Balaban, Robert S.
通讯作者:
Balaban, Robert S.
影响因子:
2
作者:
Jafri, M. Saleet;Kotulska, Malgorzata
通讯作者:
Kotulska, Malgorzata
影响因子:
--
作者:
HEINEMAN, FW;BALABAN, RS
通讯作者:
BALABAN, RS
影响因子:
64.5
作者:
HAJNOCZKY, G;ROBBGASPERS, LD;THOMAS, AP
通讯作者:
THOMAS, AP
影响因子:
5
作者:
Jo, H;Noma, A;Matsuoka, S
通讯作者:
Matsuoka, S