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<div class="ss"><div><span>导读： </span>瑞典某大学的一个团队已经设计并创造了一种电控离子泵，这种离子泵传递神经递质的速度和活体神经元传递的速度相当。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div><span style="line-height: 1.8em;"> 目前瑞典某大学的一个团队已经设计并创造了一种电控离子泵，这种离子泵传递神经递质的速度和活体神经元传递的速度相当。</span><span style="line-height: 25.2px;">有机<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>离子泵有6个小孔，也就是位于金色方块上的黑点，这些小孔能够高速释放神经递质。为了比较大小，我们把这个离子泵放在瑞典硬币旁边。人类神经元传递信息的速度比我们眨眼的速度还快30倍。一个神经元能在10毫秒内通过细胞膜释放化学物质，随即邻近细胞上的受体接收这种化学物质，信息就这样被传递出去。请有兴趣的朋友们请看看下面的内容吧。</span></div><div><span style="line-height: 25.2px;"><br></span></div><div><p style="text-align: center;"><a href="data/attachment/portal/201611/07/112158dqpn7psq9iso9ipq.png" target="_blank"><img src="data/attachment/portal/201611/07/112158dqpn7psq9iso9ipq.png"></a></p></div><div><span style="line-height: 1.8em;"><br></span></div><div><span style="line-height: 1.8em;"> 这款新仪器是在由同一个实验室研发的老版的有<a href="http://machine.oecr.com" target="_blank" class="relatedlink">机电</a>子离子泵（OEIP）的基础上改进的版本。此仪器依靠电场使带电粒子不在任何流体的作用下穿过<a href="http://opticalfilm.oecr.com" target="_blank" class="relatedlink">薄膜</a>。这个2.5厘米的泵是由金属制成，通过光刻技术使聚合物通道印到玻璃上，并且和电源连接。</span><span style="line-height: 1.8em;">传统的仪器是将离子从离子源沿着通道水平地移动到目标区域，这些离子可能是任何一种小的带电粒子，如：神经递质、质子和金属离子等。上述的横向运动相对缓慢，有时从给上电到离子到达靶点需要数秒才能完成。然而这种新研发的泵利用了聚合物薄膜的超薄特点，通过纵向运动达到目的。</span><span style="line-height: 1.8em;">“我们没有采用横向穿过数毫米的薄膜，而是采用了同一种薄膜的纵向厚度，只需要纵向穿过几百<a href="http://material.oecr.com" target="_blank" class="relatedlink">纳米</a>。”研究小组的成员 Daniel Simon 说，同时他还是 Link?ping 大学有机电子实验室的助理教授。</span></div><div><span style="line-height: 1.8em;"><br></span></div><div><b><font color="#f00000"> 工作原理是什么</font></b></div><div><b><font color="#f00000"><br></font></b></div><div> 电流沿着六条水平路径推动神经递质，每条路径的中间有一个小孔，一打开开关，研究人员激活可以改变离子源的电场，迅速将带电粒子沿着短的竖直通道射向小孔。<span style="line-height: 1.8em;">随即研究人员给它们设定好一个靶点，比如一个细胞或者一片组织。这个团队最开始使用乙酰胆碱<a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测试</a>仪器，乙酰胆碱是大脑和运动神经元连接中的一种常见的神经递质，它能使化学物质在 45 到 50 毫秒内到达靶点。</span><span style="line-height: 1.8em;">这六个新高速排列的离子传递通道都能被分别激活，这就使研究者能够自由地将神经递质传递到样本的任何部分。因此，他们能够用乙酰胆碱激活培养皿中的一组神经元而不破坏到其他神经元。</span></div><div><span style="line-height: 1.8em;"><br></span></div><div> 这种技术还能打开高速传递神经递质的脑部移植发展的大门。<span style="line-height: 25.2px;">目前这个团队正在活体细胞上测试仪器，除了能够提高我们研究神经元信号的能力，</span><span style="line-height: 1.8em;">将来这种离子泵还可能联合化学疗法，用在如今的大脑电刺激疗法上，比如深度刺激大脑来治疗癫痫等等。</span></div><div><br></div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201611/07/112452w7ngl8w5ijim5g68.jpg" target="_blank"><img src="data/attachment/portal/201611/07/112452w7ngl8w5ijim5g68.jpg"></a></p><p style="text-align: 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06:28</span> </dt> <dd>感谢oecr这么好的平台。</dd> </dl><a name="comment_anchor_9260"></a> <dl id="comment_9260_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(9260, '5015');">引用</a> </span> <a href="http://club.oecr.com/space-uid-34299.html" class="xi2 xw1" c="1">bong</a> <span class="xg1 xw0">2016-11-8 05:28</span> </dt> <dd>好不容易找到的账号和密码。</dd> </dl><a name="comment_anchor_9246"></a> <dl id="comment_9246_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(9246, '5015');">引用</a> </span> <a href="http://club.oecr.com/space-uid-115748.html" class="xi2 xw1" c="1">leilin</a> <span class="xg1 xw0">2016-11-7 22:27</span> </dt> <dd>楼主呀，，，您太有才了。。。</dd> </dl><a name="comment_anchor_9245"></a> <dl id="comment_9245_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(9245, 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