Counting leukocytes from whole blood using a lab-on-a-chip Coulter counter.

Counting leukocytes from whole blood using a lab-on-a-chip Coulter counter.
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使用芯片实验室库尔特计数器对全血中的白细胞进行计数。

DOI:
10.1109/embc.2012.6347429
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发表时间:
2012
期刊:
Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
影响因子:
--
通讯作者:
Lo,Yu-Hwa
Lo,Yu-Hwa
中科院分区:
--
文献类型:
--
作者:
Mei,Zhe;Cho,SungHwan;Zhang,Arthur;Dai,Jie;Wu,Tsung-Feng;Lo,Yu-Hwa

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相似文献

一种微流控芯片实验室库尔特计数器被证明可以计数全血中的微粒和白细胞。使用现成的金针代替电镀或沉积金属电极作为电极,简化了制造工艺,降低了成本,提高了器件的耐用性,最重要的是,获得了更好的电场分布均匀性,从而改善了信号质量。开发了一种定制的低成本解调电路,用于检测通过微流控通道确定的检测区域的颗粒和电池的交流阻抗信号。三种不同尺寸的聚苯乙烯微珠的混合物被用来表征该装置。结果表明,在2000粒/S条件下,不同粒径微珠的分离效果良好,变异系数(CV)分别为13.53%、10.35%和5.67%(7.66μm、10.5μm和14.7μm)。为了证明为接受化疗的癌症患者提供护理点或自我给药设备的潜力,我们使用芯片上实验室设备来计算全血中的白细胞,产生了令人鼓舞的初步结果,可与商用流式细胞仪的结果相媲美。
A microfluidic lab-on-a-chip Coulter counter was demonstrated to count micro particles and leukocytes from whole blood. Instead of electroplated or deposited metal electrodes, off-the-shelf gold pins were used as electrodes to simplify fabrication process, reduce cost, enhance device durability, and above all, achieve superior uniformity in E-field distribution for improved signal quality. A custom-designed, low-cost demodulation circuit was developed to detect the AC impedance signals of the particles and cells passing the detection area defined by the microfluidic channels. A mixture of polystyrene beads with three different sizes was used to characterize the device. The results showed high throughput at 2000 particles/s and clear separation among different sizes of beads with coefficients of variation (CV) of 13.53%, 10.35% and 5.67% for 7.66μm, 10.5μm and 14.7μmbeads, respectively. To demonstrate the potential for a point-of-care or self-administered device for cancer patients going through chemotherapy, we have used the lab-on-a-chip device to count leukocytes from whole blood, generating encouraging preliminary results comparable to the results from a commercial flow cytometer.
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DOI: --
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