Infertility: cervical mucus and semen factors

Area of Science:

• Reproductive Medicine
• Infertility Research
• Sperm Physiology

Background:

• Cervical factor infertility affects numerous couples.
• Sperm motility and survival in cervical mucus are critical for natural conception.
• Existing treatments for cervical factor infertility have limitations.

Purpose of the Study:

• To investigate the efficacy of pooled human blood plasma in enhancing sperm function for infertile couples.
• To identify male-associated factors contributing to cervical factor infertility.
• To evaluate the correlation between sperm-mucus penetration and pregnancy outcomes.

Main Methods:

• Investigated 34 infertile couples with cervical factor infertility.
• Assessed sperm motility in pooled human blood plasma, seminal plasma, and tissue culture media.
• Evaluated sperm survival in normal donor cervical mucus.
• Performed artificial insemination using husband's spermatozoa suspended in pooled human blood plasma.

Main Results:

• Pooled human blood plasma significantly stimulated spermatozoal motility compared to seminal plasma or tissue culture media.
• Identified nondirectional spermatozoal motility and poor sperm survival in cervical mucus as contributing male factors.
• Pregnancies occurred in 25% of cases, exclusively when spermatozoa survived in normal donor mucus.

Conclusions:

• Pooled human blood plasma is a promising medium for improving sperm motility in cervical factor infertility.
• Sperm survival in cervical mucus is a critical indicator for successful conception.
• Artificial insemination with plasma-treated sperm offers a viable treatment option for selected infertile couples.