ASSESSMENT OF SPERM ROTATIONAL DYNAMICS AND MOTILITY BEHAVIOR USING LASER-BASED OPTICAL TRAPPING: IMPLICATIONS FOR MALE FERTILITY POTENTIAL AND ASSISTED REPRODUCTIVE TECHNOLOGY
Main Article Content
Keywords
Laser-Based Optical Trapping, Sperm Rotational Dynamics, Male Fertility, Assisted Reproductive Technology, ellular Physiology
Abstract
Laser-based optical trapping provides non-invasive access to cellular physiological and mechanical properties. The aim of this technique is to study the rotational dynamics and motility behavior of sperm cells in order to assess the male fertility potential. An integrated optical system with near-infrared laser beam was used to measure rotational dynamics of live sperm cells from oligozoospermic and asthenozoospermic cases. As the sperm are optically trapped, their translational motions become rotational motions without adversely affecting them. As compared to controls, infertile men's sperm cells rotate at a significantly slower speed. As part of modern reproductive biology, it may be crucial to distinguish between normal and abnormal sperm cells based on beat frequency. It has been proposed that the application of laser-assisted techniques to biology may be a useful tool for improving assisted reproductive technology by assessing sperm fertilization capacity.
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