このエントリーをはてなブックマークに追加
ID 48979
フルテキストURL
著者
Matsuura, Koji Research Core for Interdisciplinary Sciences, Okayama University
Takenami, Mami Cardiovascular Physiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
Kuroda, Yuka Research Core for Interdisciplinary Sciences, Okayama University
Hyakutake, Toru Faculty of Engineering, Yokohama National University
Yanase, Shinichiro Graduate School of Natural Science and Technology, Okayama University
Naruse, Keiji Cardiovascular Physiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
抄録
The microfluidic sperm-sorting (MFSS) device is a promising advancement for assisted reproductive technology. Previously, poly(dimethylsiloxiane) and quartz MFSS devices were developed and used for intracytoplasmic sperm injection. However, these disposable devices were not clinically suitable for assisted reproduction, so a cyclo-olefin polymer MFSS (COP-MFSS) device was developed. By micromachining, two microfluidic channels with different heights and widths (chip A: 0.3 x 0.5 mm; chip B: 0.1 x 0.6 mm) were prepared. Sorted sperm concentrations were similar in both microfluidic channels. Linear-velocity distribution using the microfluidic channel of chip B was higher than that of chip A. Using confocal fluorescence microscopy, it was found that the highest number of motile spermatozoa swam across the laminar flow at the bottom of the microfluidic channel. The time required to swim across the laminar flow was longer at the bottom and top of the microfluidic channels than in the middle because of the low fluid velocity. These results experimentally demonstrated that the width of microfluidic channels should be increased in the region of laminar flow from the semen inlet to the outlet for unsorted spermatozoa to selectively recover spermatozoa with high linear velocity.
キーワード
laminar flow
linear velocity
microfluidic sperm sorting
motility
発行日
2012-01
出版物タイトル
Reproductive BioMedicine Online
24巻
1号
出版者
Elsevier
開始ページ
109
終了ページ
115
ISSN
1472-6483
資料タイプ
学術雑誌論文
プロジェクト
異分野融合先端研究コア
オフィシャル URL
http://www.sciencedirect.com/science/article/pii/S1472648311004937
言語
English
著作権者
Copyright © 2011 Reproductive Healthcare Ltd. Published by Elsevier Ltd. All rights reserved.
論文のバージョン
author
査読
有り
DOI
PubMed ID
Web of Sience KeyUT