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Related Concept Videos

Infertility in Males01:23

Infertility in Males

253
Male infertility affects millions of couples worldwide, arising from various factors that impact different stages of the reproductive process. An endocrine imbalance resulting from conditions like hypogonadism, Klinefelter syndrome, or pituitary disorders can disrupt hormone levels and reduce sperm production. Testicular defects, such as tumors, cryptorchidism, atrophic testes, abnormal sperm morphology, and low sperm count or motility, may arise due to genetic factors, structural...
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Spermatogenesis01:41

Spermatogenesis

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Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male...
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Updated: Jun 11, 2025

Combined Supine and Standing Imaging for Varicocele: An Improved Diagnostic Approach
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Published on: November 22, 2024

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Does Sperm DNA Fragmentation Index Continuously Decrease Over Time After Varicocelectomy in Varicocele-Induced

Lihong Wang1,2, Lei Zheng1,2, Hui Jiang3

  • 1Department of Andrology and Sexual Medicine, The Second Hospital of Dalian Medical University, Dalian, China.

American Journal of Men'S Health
|October 8, 2024
PubMed
Summary

Six months post-varicocelectomy shows optimal improvement in sperm DNA fragmentation index (DFI), indicating a favorable time for conception. Further studies are needed to confirm these findings on male infertility treatment timing.

Keywords:
DNA fragmentation indexinfertilityvaricocelevaricocelectomy

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Area of Science:

  • Urology
  • Reproductive Medicine
  • Andrology

Background:

  • Varicocele (VC) is a leading reversible cause of male infertility.
  • Varicocelectomy is a common treatment, but optimal postoperative timing for sperm quality improvement remains unclear.

Purpose of the Study:

  • To determine the ideal waiting period after varicocelectomy for significant improvement in sperm DNA fragmentation index (DFI).
  • To identify the optimal time for conception following varicocelectomy based on DFI.
  • To synthesize existing evidence through a meta-analysis.

Main Methods:

  • A meta-analysis of published studies was conducted using major scientific databases (PubMed, Embase, Scopus, Web of Science, Cochrane Library).
  • Data from four included studies were pooled to calculate the mean difference (MD) and 95% confidence interval (CI) for DFI changes.
  • Heterogeneity was assessed using the I-squared (I²) statistic.

Main Results:

  • Sperm DFI significantly improved within 3 months post-varicocelectomy compared to the preoperative state (MD: -3.66).
  • A further significant improvement in sperm DFI was observed at 6 months compared to 3 months post-surgery (MD: -1.51).
  • No significant additional improvement in sperm DFI was noted at 12 months post-varicocelectomy (MD: -1.59, p=0.06).

Conclusions:

  • Six months appears to be the optimal time post-varicocelectomy for achieving the best improvement in sperm DFI.
  • This 6-month interval may represent the most favorable period for conception attempts after varicocelectomy.
  • Further well-designed prospective studies are required to validate these findings.