Journal
LAB ON A CHIP
Volume 10, Issue 23, Pages 3213-3217Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0lc00072h
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Funding
- National Institutes of Health (NIH) through the Center for Cell Control [PN2 EY018228]
- NIH/NCRR UCSF-CTSI [UL1 RR024131]
- NIH
- NATIONAL CENTER FOR RESEARCH RESOURCES [UL1RR024131] Funding Source: NIH RePORTER
- NATIONAL EYE INSTITUTE [PN2EY018228] Funding Source: NIH RePORTER
- NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES [R37DK045370] Funding Source: NIH RePORTER
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Optoelectronic tweezers was used to manipulate human spermatozoa to determine whether their response to OET predicts sperm viability among non-motile sperm. We review the electro-physical basis for how live and dead human spermatozoa respond to OET. The maximal velocity that nonmotile spermatozoa could be induced to move by attraction or repulsion to a moving OET field was measured. Viable sperm are attracted to OET fields and can be induced to move at an average maximal velocity of 8.8 +/- 4.2 mu m s(-1), while non-viable sperm are repelled to OET, and are induced to move at an average maximal velocity of -0.8 +/- 1.0 mu m s(-1). Manipulation of the sperm using OET does not appear to result in increased DNA fragmentation, making this a potential method by which to identify viable non-motile sperm for assisted reproductive technologies.
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