Flexible microelectrode arrays to interface epicardial electrical signals with intracardial calcium transients in zebrafish hearts.
Flexible microelectrode arrays to interface epicardial electrical signals with intracardial calcium transients in zebrafish hearts.
复制标题
DOI:
10.1007/s10544-011-9612-9
复制
发表时间:
2012-04
影响因子:
2.8
通讯作者:
Hsiai, Tzung K.
中科院分区:
文献类型:
--
作者:
Yu, Fei;Zhao, Yu;Gu, Jie;Quigley, Katherine L.;Chi, Neil C.;Tai, Yu-Chong;Hsiai, Tzung K.
The zebrafish (Danio rerio) is an emerging genetic model for regenerative medicine. In humans, myocardial infarction results in the irreversible loss of cardiomyocytes. However, zebrafish hearts fully regenerate after a 20% ventricular resection, without either scarring or arrhythmias. To study this cardiac regeneration, we developed implantable flexible multi-microelectrode membrane arrays that measure the epicardial electrocardiogram signals of zebrafish in real-time. The microelectrode electrical signals allowed for a high level of both temporal and spatial resolution (~20 μm), and the signal to noise ratio of the epicardial ECG was comparable to that of surface electrode ECG (7.1 dB vs. 7.4 dB, respectively). Processing and analysis of the signals from the microelectrode array demonstrated distinct ECG signals: namely, atrial conduction (P waves), ventricular contraction (QRS), and ventricular repolarization (QT interval). The electrical signals were in synchrony with optically measured Calcium concentration gradients in terms of d[Ca2+]/dt at both whole heart and tissue levels. These microelectrodes therefore provide a real-time analytical tool for monitoring conduction phenotypes of small vertebral animals with a high temporal and spatial resolution.
登录
查看更多内容
DOI:
10.1161/atvbaha.108.165951
发表时间:
2008-12
期刊:
Arteriosclerosis, thrombosis, and vascular biology
影响因子:
--
作者:
Hahn C;Schwartz MA
通讯作者:
Schwartz MA
影响因子:
56.9
作者:
Poss, KD;Wilson, LG;Keating, MT
通讯作者:
Keating, MT
影响因子:
64.5
作者:
Bersell, Kevin;Arab, Shima;Kuehn, Bernhard
通讯作者:
Kuehn, Bernhard
DOI:
10.1152/ajpheart.00870.2002
发表时间:
2003-04-01
影响因子:
4.8
作者:
Sedmera, D;Reckova, M;Thompson, RP
通讯作者:
Thompson, RP
影响因子:
9.8
作者:
Yokogawa T;Marin W;Faraco J;Pézeron G;Appelbaum L;Zhang J;Rosa F;Mourrain P;Mignot E
通讯作者:
Mignot E