Subsarcolemmal mitochondrial flashes induced by hypochlorite stimulation in cardiac myocytes
Subsarcolemmal mitochondrial flashes induced by hypochlorite stimulation in cardiac myocytes
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次氯酸盐刺激心肌细胞诱导肌膜下线粒体闪光
DOI:
10.3109/10715762.2014.932114
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发表时间:
2014-06
影响因子:
3.3
通讯作者:
Cheng, H.
中科院分区:
文献类型:
--
作者:
Wang, X.;Yang, D.;Liu, J.;Cheng, H.
Abstract Mitochondrial superoxide flash (mitoflash) reflects quantal and bursting superoxide production and concurrent membrane depolarization triggered by transient mitochondrial permeability transition in many types of cells, at the level of single mitochondria. Here we investigate reactive oxygen species (ROS)-mediated modulation of mitoflash activity in cardiac myocytes and report a surprising finding that hypochlorite ions potently and preferentially triggered mitoflashes in the subsarcolemmal mitochondria (SSM), whereas hydrogen peroxide (H2O2) elicited mitoflash activity uniformly among SSM and interfibrillar mitochondria (IFM). The striking SSM mitoflash response to hypochlorite stimulation remained intact in cardiac myocytes from NOX2-deficient mice, excluding local NOX2-mediated ROS as the major player. Furthermore, it occurred concomitantly with SSM Ca2+ accumulation and local Ca2+ and CaMKII signaling played an important modulatory role by altering frequency and unitary properties of SSM mitoflashes. These findings underscore the functional heterogeneity of SSM and IFM and the oxidant-specific responsiveness of mitochondria to ROS, and may bear important ramifications in devising therapeutic strategies for the treatment of oxidative stress-related heart diseases.
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DOI:
10.1111/j.1749-6632.1998.tb08295.x
发表时间:
1998-09
影响因子:
5.2
作者:
V. Ramesh;V. Sharma;Shey-Shing Sheu;Clara Franzini-Armstrong
通讯作者:
V. Ramesh;V. Sharma;Shey-Shing Sheu;Clara Franzini-Armstrong
影响因子:
3.7
作者:
Holmuhamedov EL;Oberlin A;Short K;Terzic A;Jahangir A
通讯作者:
Jahangir A
DOI:
10.1152/ajpheart.00866.2004
发表时间:
2005-04
期刊:
American journal of physiology. Heart and circulatory physiology
影响因子:
--
作者:
A. Riva;B. Tandler;F. Loffredo;Edwin J. Vazquez;C. Hoppel
通讯作者:
A. Riva;B. Tandler;F. Loffredo;Edwin J. Vazquez;C. Hoppel
DOI:
10.1152/ajpheart.1997.273.3.h1544
发表时间:
1997-09-01
影响因子:
4.8
作者:
Lesnefsky, EJ;Tandler, B;Hoppel, CL
通讯作者:
Hoppel, CL
影响因子:
64.5
作者:
Wang, Wang;Fang, Huaqiang;Groom, Linda;Cheng, Aiwu;Zhang, Wanrui;Liu, Jie;Wang, Xianhua;Li, Kaitao;Han, Peidong;Zheng, Ming;Yin, Jinhu;Wang, Weidong;Mattson, Mark P.;Kao, Joseph P. Y.;Lakatta, Edward G.;Sheu, Shey-Shing;Ouyang, Kunfu;Chen, Ju;Dirksen, Robert T.;Cheng, Heping
通讯作者:
Cheng, Heping