Hypoxia, calcium fluxes, and inotropic state: studies in cultured heart cells.
Hypoxia, calcium fluxes, and inotropic state: studies in cultured heart cells.
复制标题
缺氧、钙流动和正性肌力状态:培养心脏细胞的研究。
DOI:
10.1016/0002-8703(82)90478-1
复制
发表时间:
1982
影响因子:
4.8
通讯作者:
Lorell,B
中科院分区:
文献类型:
--
作者:
Smith,TW;Barry,WH;Marsh,JD;Lorell,B
Methods have been developed for the study of cellular mechanisms underlying a variety of physiologic and pathophysiologic phenomena using cultured chick embryo heart cells. These spontaneously beating monolayer preparations lack appreciable diffusion barriers, and interstitial space components can be defined and controlled conveniently. These properties facilitate the measurement of transmembrane fluxes and cellular contents of sodium, potassium, and calcium. Concomitantly, methods have been developed to measure the contractile state as reflected in the amplitude and velocity of movement of individual myocytes in the culture. Experiments are described in which the contractile responses of cultured heart cells to graded hypoxia demonstrated a critical PO2level around 12 mm Hg, below which progressive impairment of contractile function occurred. In preparations with iodoacetate-induced glycolytic blockade, enhanced sensitivity to hypoxia occurred. Additional experiments are described, demonstrating the applicability of this model system to the study of problems including the mechanism of cardiac glycoside-induced increases in inotropic state and the definition of calcium flux pathways important in excitation-contraction coupling.
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DOI:
10.1172/jci109851
发表时间:
1980
期刊:
The Journal of clinical investigation
影响因子:
--
作者:
J. Parker;J. Harper
通讯作者:
J. Harper
DOI:
10.1073/pnas.75.12.5831
发表时间:
1978-01-01
影响因子:
11.1
作者:
GALPER, JB;SMITH, TW
通讯作者:
SMITH, TW
DOI:
10.1152/ajpheart.1980.239.5.h651
发表时间:
1980
期刊:
The American journal of physiology
影响因子:
--
作者:
Barry,WH;Pober,J;Marsh,JD;Frankel,SR;Smith,TW
通讯作者:
Smith,TW
DOI:
--
发表时间:
1980
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Galper,JB;Smith,TW
通讯作者:
Smith,TW
影响因子:
20.1
作者:
HOUGEN, TJ;SMITH, TW
通讯作者:
SMITH, TW