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Effect of peritoneal fluid on sperm motility and velocity distribution using objective measurements
G Soldati1, A Piffaretti-Yanez, A Campana
1Andrology Laboratory, La Carità Hospital, Locarno, Switzerland.
Abstract:
The aim of this study was to analyze in vitro the effect(s) of peritoneal fluid (PF) on sperm motility. Seventy PFs obtained during laparoscopy were tested on motile-rich sperm suspensions. Proportion of motile sperm and velocity distribution were evaluated by multiple-exposure photography technique. At time (t) = 0, PFs increased both sperm parameters as compared with control (P less than 0.01). Maximum effect was observed at t = 5 hours: 32 (45%) PFs increased and 5 (7%) decreased the proportion of motile sperm, while 8 (11%) PFs increased and 4 (6%) decreased sperm velocity. No correlation was found between a particular infertile group and a definite negative effect. However, 70% of PFs from fertile women maintained or increased the proportion of motile sperm at t = 5 hours, compared with 36% in the total infertile group. Comparison of the sperm motility effect(s) of a given PF on different ejaculates revealed that the effects observed also were influenced by the sperm sample tested. In conclusion, PFs can maintain or increase the motility of spermatozoa as function of time. However, some PFs can inhibit sperm motility and these effect(s) can be influenced by the sperm sample.
Insights
Peritoneal fluid (PF) can impact sperm motility. While some PFs enhance sperm movement, others may inhibit it, depending on the fluid and sperm sample tested.
Area of Science:
- Reproductive Biology
- Infertility Research
- Sperm Physiology
Background:
- Peritoneal fluid (PF) plays a role in the peritoneal cavity.
- Its direct effects on sperm motility in vitro are not fully understood.
- Understanding these effects is crucial for infertility investigations.
Purpose of the Study:
- To investigate the in vitro effects of peritoneal fluid (PF) on sperm motility.
- To analyze how PF influences sperm proportion and velocity over time.
- To explore potential correlations between PF origin and its effect on sperm.
Main Methods:
- Collected 70 peritoneal fluid (PF) samples during laparoscopy.
- Tested PF on motile-rich sperm suspensions.
- Evaluated sperm motility and velocity using multiple-exposure photography at various time points.
Main Results:
- Initially, PFs significantly increased sperm motility and velocity compared to controls.
- At 5 hours, 45% of PFs increased sperm proportion, and 11% increased sperm velocity.
- PFs from fertile women were more likely to maintain or enhance sperm motility than those from infertile women.
- Sperm sample variability influenced the observed effects of PF.
Conclusions:
- Peritoneal fluid (PF) can modulate sperm motility, with effects varying over time.
- Some PFs exhibit inhibitory effects on sperm, influenced by the specific sperm sample.
- These findings highlight the complex interaction between PF and spermatozoa in reproductive contexts.