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Related Experiment Video

Updated: Aug 13, 2025

Medium-throughput Screening Assays for Assessment of Effects on Ca2+-Signaling and Acrosome Reaction in Human Sperm
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F4-Neuroprostane Effects on Human Sperm.

Elena Moretti1, Cinzia Signorini1, Daria Noto1

  • 1Department of Molecular and Developmental Medicine, Policlinico Le Scotte, University of Siena, 53100 Siena, Italy.

International Journal of Molecular Sciences
|January 21, 2023
PubMed
Summary
This summary is machine-generated.

Exposure to F4-neuroprostanes (F4-NeuroPs) enhanced human sperm motility and acrosome reaction, suggesting a role in sperm capacitation for assisted fertilization.

Keywords:
F4-neuroprostanesacrosome reactioncapacitationhuman spermin vitro studyryanodine receptorsperm motility

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Area of Science:

  • Reproductive Biology
  • Sperm Physiology
  • Andrology

Background:

  • Neuroprostanes are lipid peroxidation products found in seminal fluid.
  • Their specific role in human sperm function, particularly capacitation, remains incompletely understood.

Purpose of the Study:

  • To investigate the effects of F4-neuroprostanes (F4-NeuroPs) on human sperm motility, mitochondrial potential, acrosome reaction, and chromatin integrity.
  • To explore the localization of the ryanodine receptor in response to F4-NeuroP exposure.

Main Methods:

  • Human sperm were incubated with F4-NeuroPs (7 ng) for 2 and 4 hours.
  • Sperm motility, membrane mitochondrial potential (MMP), and acrosome reaction (using PSA) were assessed.
  • Chromatin integrity (AO assay) and ryanodine receptor localization (immunofluorescence) were analyzed.

Main Results:

  • A significant increase in progressive motility and MMP was observed after 2 hours of F4-NeuroP incubation.
  • A higher percentage of sperm exhibited reacted acrosomes after 4 hours.
  • Ryanodine receptor showed differential localization at 2h (midpiece/postacrosomal) and 4h (dotted).
  • No significant changes in chromatin integrity (dsDNA) were detected.

Conclusions:

  • F4-NeuroPs can enhance key parameters of human sperm function, including motility and acrosome reaction.
  • These findings suggest F4-NeuroPs may induce sperm capacitation, potentially aiding in vitro fertilization outcomes.
  • The observed effects may involve ion channels and ryanodine receptor modulation in sperm cells.