Comparison of reproductive outcome in oligozoospermic men with high sperm DNA fragmentation undergoing intracytoplasmic sperm injection with ejaculated and testicular sperm

Capsule:
The sperm DNA fragmentation index is w5-fold lower in testicular compared with in ejaculated sperm. The use of testicular sperm was associated with improved intracytoplasmic sperm injection outcomes in men with oligozoospermia and persistent high sperm DNA fragmentation.

Authors:
Sandro C. Esteves, M.D., Ph.D., Fernando Sánchez-Martín, M.D., Pascual Sánchez-Martín, M.D., Danielle T. Schneider, M.Sc., Jaime Gosálvez, Ph.D.

Volume 104, Issue 6, Pages 1398-1405

Abstract:

Objective:
To investigate the effectiveness of intracytoplasmic sperm injection (ICSI) using testicular sperm as a strategy to overcome infertility in men with high sperm DNA fragmentation (SDF).

Design:
Prospective, observational, cohort study.

Setting:
Private IVF centers.

Patient(s):
A total of 147 couples undergoing IVF-ICSI and day 3 fresh ETs whose male partner has oligozoospermia and high SDF.

Intervention(s):
Sperm injections were carried out with ejaculated sperm (EJA-ICSI) or testicular sperm (TESTI-ICSI) retrieved by either testicular sperm extraction (TESE) or testicular sperm aspiration (TESA). SDF levels were reassessed on the day of oocyte retrieval in both ejaculated and testicular specimens.

Main Outcome Measure(s):
Percentage of testicular and ejaculated spermatozoa containing fragmented DNA (%DFI) and clinical pregnancy, miscarriage, and live-birth rates.

Result(s):
The %DFI in testicular sperm was 8.3%, compared with 40.7% in ejaculated sperm. For the TESTI-ICSI group versus the EJA-ICSI group, respectively, the clinical pregnancy rate was 51.9% and 40.2%, the miscarriage rate was 10.0% and 34.3%, and the live-birth rate was 46.7% and 26.4%.

Conclusion(s):
ICSI outcomes were significantly better in the group of men who had testicular sperm used for ICSI compared with those with ejaculated sperm. SDF was significantly lower in testicular specimens compared with ejaculated counterparts. Our results suggest that TESTI-ICSI is an effective option to overcome infertility when applied to selected men with oligozoospermia and high ejaculated SDF levels.

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