Phospholipase C zeta parameters in sperm from polymorphic teratozoospermic men

Area of Science:

• Reproductive Biology
• Male Infertility Research
• Sperm Function Analysis

Background:

• Teratozoospermia, characterized by abnormal sperm morphology, significantly impacts male fertility.
• Biomarker-based evaluation of sperm quality is emerging as a key strategy to manage male infertility.
• Phospholipase C zeta (PLCζ) is a sperm-specific protein vital for oocyte activation and early embryo development, serving as a potential biomarker for male fertilization potential.

Purpose of the Study:

• To investigate the expression levels, localization patterns, and proportion of PLCζ in men with polymorphic teratozoospermia.
• To compare these PLCζ parameters between infertile men with polymorphic teratozoospermia and fertile normozoospermic men.

Main Methods:

• Western blotting and immunofluorescence analyses were employed to evaluate PLCζ in semen samples.
• Semen samples were collected from 23 men with polymorphic teratozoospermia and 13 fertile normozoospermic men.

Main Results:

• Polymorphic teratozoospermic men exhibited significantly lower expression levels of PLCζ compared to fertile controls.
• No significant differences were observed in the localization patterns or the proportion of PLCζ-expressing sperm between the two groups.
• The findings indicate that while PLCζ is present and correctly localized in teratozoospermic men, its overall expression is reduced.

Conclusions:

• Reduced expression of PLCζ in polymorphic teratozoospermic men may be a contributing factor to their infertility.
• Abnormal localization or absence of PLCζ is unlikely to be the cause of infertility in these patients.
• Further research into PLCζ's role in male infertility is warranted, focusing on expression levels.