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Updated: Jun 23, 2026

Medium-throughput Screening Assays for Assessment of Effects on Ca2+-Signaling and Acrosome Reaction in Human Sperm
05:44

Medium-throughput Screening Assays for Assessment of Effects on Ca2+-Signaling and Acrosome Reaction in Human Sperm

Published on: March 1, 2019

Impact of caspase activation in human spermatozoa

Sonja Grunewald1, Rakesh Sharma, Uwe Paasch

  • 1Department of Dermatology/Andrology Unit, University of Leipzig, 04103 Leipzig, Germany.

Microscopy Research and Technique
|May 21, 2009
PubMed

Insights

Caspase activation in human sperm triggers apoptosis, reducing fertility. This review covers caspase roles, monitoring, and removal methods to improve sperm quality.

Area of Science:

  • Reproductive biology
  • Cellular signaling
  • Apoptosis research

Background:

  • Caspases, a family of cysteine proteases, are key regulators of apoptosis.
  • Their presence and activation in human sperm have been confirmed, despite earlier controversy.
  • Activated caspases in sperm lead to decreased fertilizing capacity.

Purpose of the Study:

  • To review the current understanding of caspases in human sperm.
  • To highlight methods for monitoring caspase activity.
  • To discuss the implications of caspase activation in both physiological and pathological conditions.

Main Methods:

  • Literature review of studies on caspases in human sperm.
  • Discussion of various techniques for caspase monitoring.
  • Analysis of sperm preparation methods for caspase depletion.

Main Results:

  • Caspase activation is a significant factor in male germ cell apoptosis.
  • Apoptotic signaling in sperm negatively impacts reproductive potential.
  • Standard and molecular sperm preparation techniques can deplete caspase-positive sperm.

Conclusions:

  • Caspases play a critical role in human sperm function and male fertility.
  • Understanding caspase activation is crucial for diagnosing and treating infertility.
  • Effective sperm preparation methods can mitigate the negative effects of caspases.

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