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Effect of Tbx1 knock down on cardiac performance in zebrafish
Zhanglifeng 1 #,Yuexiang Wang 2,Jiang qiu 3,Song Hou-yan 3,GUI Yonghao 4 *
1.Children\'s Hospital of Fudan university, ShangHai 201102
2.key laboratory of molecular medicine, ministry of education,fudan university,shanghai
3.key laboratory of molecular medicine, ministry of education,fudan university,shanghai
4.Children's Hospital of Fudan university
*Correspondence author
#Submitted by
Subject:
Funding: doctoral fund of ministry of education of china(No.No. 200802461110), National natural science foundation(No.No. 30772352)
Opened online:22 February 2012
Accepted by: none
Citation: Zhanglifeng,Yuexiang Wang,Jiang qiu.Effect of Tbx1 knock down on cardiac performance in zebrafish[OL]. [22 February 2012] http://en.paper.edu.cn/en_releasepaper/content/4464207
 
 
In this paper, myocardial performance was explored in Tbx1 morpholino injected zebrafish embryos. In this study, Tbx1 specific morpholino was used to reduce the function of Tbx1 in zebrafish. The differentiation of the myocardial cells was observed using whole mount in situ hybridization. Heart rates were observed and recorded under the microscope from 24 to 72 hours post fertilization (hpf). The cardiac performance was analyzed by measuring ventricular shortening fraction and atrial shortening fraction. Tbx1 morpholino injected embryos were characterized by defects in the pharyngeal arches, otic vesicle, aortic arches and thymus. In addition, Tbx1 knock down reduced the amount of pharyngeal neural crest cells in zebrafish. Abnormal cardiac morphology was visible in nearly 20% of the Tbx1 morpholino injected embryos. The hearts in these embryos did not loop or loop incompletely. Importantly, cardiac performance and heart rate were reduced in Tbx1 morpholino injected embryos. Tbx1 might play an essential role in the development of pharyngeal neural crest cells in zebrafish. Cardiac performance is impaired by Tbx1 knock down in zebrafish.
Keywords:zebrafish; cardiac performance; neural crest cells
 
 
 

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