Pentoxifylline: actions and applications in assisted reproduction

Area of Science:

• Reproductive Medicine
• Sperm Biology
• Assisted Reproductive Technology (ART)

Background:

• Sperm preparation is crucial for assisted reproduction success.
• Oligo/asthenozoospermic and normozoospermic samples with suboptimal acrosome reactions present challenges.
• Pentoxifylline (PF) is a phosphodiesterase inhibitor with potential effects on sperm function.

Purpose of the Study:

• To evaluate the efficacy of pentoxifylline (PF) in sperm preparation for assisted reproduction.
• To assess PF's impact on fertilization rates and sperm parameters.
• To explore PF's mechanisms of action, including effects on motility and reactive oxygen species.

Main Methods:

• Review of studies investigating pentoxifylline use in sperm preparation protocols.
• Analysis of fertilization rates, sperm motility, and acrosome reaction success.
• Examination of PF's effects on reactive oxygen species (ROS) scavenging.

Main Results:

• PF significantly improved fertilization rates in oligo/asthenozoospermic samples.
• Enhanced fertilization was also observed in normozoospermic samples with suboptimal acrosome reactions.
• PF increased sperm motility, hyperactivation, and acrosome reaction rates.
• PF demonstrated reactive oxygen species (ROS) scavenging properties, though higher concentrations may be needed.

Conclusions:

• Pentoxifylline (PF) is beneficial for sperm preparation in assisted reproduction, improving fertilization outcomes.
• PF's primary benefits appear to be enhanced sperm motility and acrosome reaction.
• Optimal use requires washout before insemination to prevent potential inhibition of oocyte maturation.