Antibacterial activity of human cervical mucus

Area of Science:

• Gynecology
• Microbiology
• Immunology

Background:

• Human cervical mucus plays a role in reproductive health.
• Its antimicrobial properties are crucial for protecting the upper reproductive tract.

Purpose of the Study:

• To evaluate the antimicrobial activity of cervical mucus.
• To assess the influence of contraception (intrauterine devices and hormonal treatments) on this activity.

Main Methods:

• Cervical mucus samples were collected from three groups of women: healthy controls, intrauterine device users, and hormonal contraceptive users.
• Samples were collected on days 10, 14, 18, and 22 of the menstrual cycle.
• Antimicrobial activity was tested against a panel of microorganisms, including Micrococcus lysodeicticus, Staphylococcus species, Proteus mirabilis, Escherichia coli, Candida albicans, and Streptococcus species.

Main Results:

• Cervical mucus demonstrated significant antimicrobial activity against Micrococcus lysodeicticus across all groups.
• The antimicrobial effect was strongest against Staphylococcus species and weakest against Streptococcus species.
• Intrauterine device use did not alter the antimicrobial properties of cervical mucus.
• Hormonal contraceptive use diminished the antimicrobial effect against most tested microorganisms, except for Micrococcus lysodeicticus.
• Peak antimicrobial activity was observed on day 14 of the menstrual cycle, decreasing towards the end of the cycle.

Conclusions:

• Human cervical mucus possesses broad-spectrum antimicrobial properties.
• Hormonal contraceptives can compromise the natural defense mechanisms of cervical mucus.
• Intrauterine devices do not appear to interfere with the antimicrobial capacity of cervical mucus.