Studies on polyspermia.

Area of Science:

• Reproductive Biology
• Andrology
• Human Reproduction

Background:

• Polyspermia, a condition involving excess sperm, is often identified during infertility investigations.
• The clinical significance and etiological factors of polyspermia require further elucidation.

Purpose of the Study:

• To investigate the reproductive outcomes and semen parameters in couples where the male partner exhibits polyspermia.
• To evaluate the association between polyspermia and infertility and spontaneous abortion rates.

Main Methods:

• Retrospective analysis of 31 couples with male polyspermia compared to a control group.
• Semen analysis including sperm count, motility, morphology, fructose levels, and agglutination.
• Comparison of infertility and spontaneous abortion rates between the study and control groups.

Main Results:

• No statistically significant difference in infertility rates between polyspermic and control groups (22.5% vs 17.6%).
• Significantly higher spontaneous abortion rate in couples with polyspermia (25.5%) compared to controls (9.7%, P < 0.05).
• Men with polyspermia showed significantly lower fructose levels and higher percentages of necrospermia and agglutination.

Conclusions:

• Polyspermia may be associated with an increased risk of spontaneous abortion, despite similar infertility rates.
• Abnormal semen parameters, including low fructose and increased sperm defects, are characteristic of male polyspermia.
• Further research into the etiology of polyspermia is warranted.