Turning the corner in fertility: high DNA integrity of boundary-following sperm.

Eamer, Lise; Vollmer, Marion; Nosrati, Reza; San Gabriel, Maria C; Zeidan, Krista; Zini, Armand; Sinton, David · Lab Chip · 2016

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Abstract

We present a passive microfluidic sperm selection strategy that collects motile sperm based on their preference to follow boundaries and turn corners. Clinical assessment of selected human sperm from the device revealed a strong correlation between high DNA integrity and the tendency for sperm to follow boundaries. Human sperm with preference to follow boundaries on the left- or right-hand sides have higher (>51%) DNA integrity than straight swimmers and significantly higher (>67%) DNA integrity than sperm in raw semen. Boundary following behaviour offers a strategy to selecting sperm with the highest DNA integrity to improve the success rate of assisted reproduction.

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