Microfluidic System for Rapid Isolation of Sperm From Microdissection TESE Specimens

Area of Science:

• Reproductive Biology
• Biomedical Engineering
• Urology

Background:

• Testicular sperm extraction (TESE) is crucial for treating nonobstructive azoospermia.
• Conventional sperm isolation methods can be time-consuming and less efficient.
• Improving sperm retrieval rates and sample quality is essential for successful assisted reproductive technologies.

Purpose of the Study:

• To develop and evaluate a novel microfluidic system for rapid sperm isolation.
• To compare the efficiency of the microfluidic system against conventional methods for TESE samples.
• To assess the impact of the microfluidic system on sperm viability and morphology.

Main Methods:

• The microfluidic system was tested with minced testicular biopsies from patients with nonobstructive azoospermia.
• Samples were divided into conventional processing and microfluidic processing groups.
• Embryologists, blinded to the protocol, identified and quantified sperm, comparing retrieval rates and time.

Main Results:

• The microfluidic system yielded cleaner samples with fewer somatic cells and debris.
• Sperm identification rate improved by 8.88-fold, from 1.52 sperm/min (conventional) to 13.5 sperm/min (microfluidic).
• Preliminary tests indicated minimal adverse effects on sperm viability and morphology.

Conclusions:

• The microfluidic system enables rapid and efficient sperm isolation from TESE samples.
• This technology shows potential for improving sperm retrieval in TESE procedures.
• Further clinical trials are warranted to validate these preliminary findings.