研究人員表示這項技術可以讓豬恢復健康的心臟節律
心韻調整器
研究人員表示這項技術可以讓豬恢復健康的心臟節律
(8月29日HealthDay新聞) 一項新的生物技術使得科學家可以讓心跳不規則的豬恢復正常心臟節奏，減少動物對人工心韻調整器的依賴。
科學家傳送生技工程處理的生物細胞表面蛋白到豬心臟肌肉以達到恢復心臟區域- -控制心跳節奏的竇房結(sinoatrial node, SA node) ，的再生。
研究人員說研究的目的是最終能以生物工程的方法、而不是電子心韻調整器來治療人們的心韻問題.
"我們的研究提供了在活體模式中用生物工程處理的細胞取代電子心韻調整器之正面的、直接的證據。"加州大學戴維斯醫學院細胞生物學、人體解剖學副教授，研究領導者Ronald Li，在準備的聲明發表.
這項研究發表於網路版的" Circulation",預計可於9月5日發行出版
. 超過220萬美國人的心跳不規則, 每年25萬多人進行人工心韻調整器植入. Li教授和他的同事們認為,生物工程將病人提供更長期、可靠、較少侵入式的體內裝置的替代設備。
http://www.healthday.com/view.cfm?id=534592
Pacemakers
The technique restored healthy heart rhythm in pigs, researchers say
TUESDAY, Aug. 29 (HealthDay News) -- A new bioengineering technique has allowed scientists to restore normal heart rhythms in pigs with irregular heartbeats, reducing the animals' dependence on artificial pacemakers.
The scientists delivered a bioengineered cell-surface protein to the cardiac muscle of pigs in order to regenerate an area of the heart -- the sinoatrial (SA) node -- that controls heart rhythm.
The goal of the research is to eventually be able to use bioengineering, instead of electronic pacemakers, to treat humans with heart rhythm problems.
"Our study offers positive and direct evidence in living models that bioengineered cells can replace the electronic pacemaker," research leader an associate professor of cell biology and human anatomy at the University of California at Davis School of Medicine, said in a prepared statement.
The study was published in the online edition of Circulation, and was expected to be published in the Sept. 5 print issue.
More than 2.2 million Americans have irregular heartbeats, and more than 250,000 get artificial pacemakers implanted each year. Li and his colleagues believe bioengineering would provide these patients with a more permanent, reliable and less invasive alternative to implanted devices.