The influence of peritoneal fluid from patients with minimal stage or treated endometriosis on sperm motility parameters using computer-assisted semen analysis.
ABSTRACT The aim of this study was to determine the influence of peritoneal fluid from patients with minimal stage or treated endometriosis on sperm motility parameters. Peritoneal fluid aspirated at diagnostic laparoscopy for unexplained infertility from women during the luteal phase of the menstrual cycle (days 20-23) was incubated for 5 h with fresh semen samples obtained from men of recently proven fertility. Spermatozoa were prepared by a swim-up technique from unprocessed semen. Using computer-assisted semen analysis (Hamilton-Thorn Research, MA, USA), sperm motility and motion parameters were observed at 0, 120, 180 and 300 min. Compared with spermatozoa incubated in Earle's balanced salt solution/human serum albumin, the percentage motility, percentage progressive motility and progressive velocity of spermatozoa incubated in peritoneal fluid from patients without visible endometriosis were significantly higher (P < 0.05). Maximal effect was observed at 3 h and maintained until 5 h. We conclude that in an in-vitro study, in contrast to peritoneal fluid from patients with minimal stage endometriosis, peritoneal fluid from patients with unexplained infertility and no visible endometriosis can improve sperm motility when compared with culture medium.
- SourceAvailable from: Tasuku Harada
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- "PF is reported to be associated with infertility in several ways, e.g. inhibiting sperm motion (Drudy et al., 1994; Aeby et al., 1996), sperm acrosome reaction (Arumugam, 1994), mouse embryo growth (Prough et al., 1990), sperm binding to the zona pellucida (Coddington et al., 1992), and ciliary action in the human Fallopian tube (Lyons et al., 2002). Since the PF of infertile women with endometriosis contains abundant cytokines and growth factors, these factors may exert those detrimental effects on the reproductive process and possibly contribute to endometriosis-associated infertility (Harada et al., 2001). "
ABSTRACT: We previously reported that the level of interleukin (IL)-6 is increased in the peritoneal fluid of women with endometriosis. This study was undertaken to assess the effects of IL-6 and soluble IL-6 receptor (sIL-6R) on in vitro sperm motility. Sperm (n = 20) were cultured with IL-6 or sIL-6R, or with a combination of both. After 24 h cultures, sperm motility was evaluated using a computer-assisted semen analysis system. Gene and protein expressions of IL-6, IL-6 receptor (IL-6R), and glycoprotein 130 (gp130) were examined in sperm by RT-PCR analysis and western blot analysis. Addition of IL-6 or sIL-6R individually to the culture media had no affect on sperm motion. However, adding a combination of IL-6 and sIL-6R dose-dependently reduced the percentage of motile and rapidly moving sperm. Adding anti-IL-6R antibody abolished these adverse effects. Sperm expressed the gp130 gene and protein, but not IL-6 or IL-6R. A combination of IL-6 and sIL-6R may be associated with gp130 expressed in the sperm and reduce sperm motility. IL-6 and sIL-6R may contribute to the pathogenesis of endometriosis-associated infertility.Human Reproduction 09/2004; 19(8):1821-5. DOI:10.1093/humrep/deh324 · 4.59 Impact Factor
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ABSTRACT: To determine whether peritoneal fluid from women with endometriosis contributes to infertility by impairing sperm motion and functional characteristics. Women with endometriosis (n = 20) underwent laparoscopy for infertility or pelvic pain. Patients undergoing tubal ligation served as controls (n = 14). Peritoneal fluid was aspirated from women with endometriosis, or from women undergoing laparoscopic tubal ligation. Sperm motility, motion characteristics and acrosome reaction were assessed following incubation with peritoneal fluid. Sperm motility, motion characteristics, and acrosome reaction did not differ significantly between the two groups after 3, 5, or 24 hours of incubation with peritoneal fluid. Sperm motion or functional characteristics showed no significant impairment when sperm from normal donors were incubated with peritoneal fluid from patients with endometriosis. It is unlikely that peritoneal fluid in these patients contributes to infertility.International journal of fertility and women's medicine 44(1):31-7. · 0.56 Impact Factor
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ABSTRACT: The effect of peritoneal fluid (PF) from endometriosis patients was studied in spontaneous and stimulus-induced (Ca-ionophore; A23187) acrosome reactions. PF samples were obtained from 21 infertile women with endometriosis and five normal women (controls). Sperm acrosomes were examined by staining with Pisum sativum agglutinin labelled with fluorescein isothiocyanate. The incidence of spontaneous acrosome reaction after 1 and 6 h of incubation (6.7 +/- 1.6 and 6.9 +/- 1.4 respectively) was significantly (P < 0.001) lower when the incubation was performed with PF from endometriosis patients in comparison with spermatozoa incubated in PF from the control group (12.8 +/- 1.1 and 12.8 +/- 0.8). Similarly, the incidence of A23187-induced acrosome reaction after 1 and 6 h of incubation (19.8 +/- 2.7 and 20.0 +/- 2.4) was significantly (P < 0.001) lower when spermatozoa were incubated with PF from endometriosis patients in comparison with spermatozoa incubated with PF from the control group (34.6 +/- 9.8 and 34.4 +/- 1.1). The incidence of A23187-inducible acrosome reaction was also significantly (P < 0.001) lower when the incubation was performed with PF from endometriosis patients (13.1 +/- 2.8 and 13.1 +/- 2.4) when compared with that from the control group (21.8 +/- 2.6 and 21.6 +/- 1.5). No relationship was found between the stage of endometriosis and the incidence of acrosome loss. In conclusion, the PF from endometriosis patients decreased both spontaneous and stimulus-induced acrosome reaction. This may represent a mechanism for the detrimental effect of the PF from endometriosis patients on the spermatozoa-oocyte interaction and partially explain the aetiology of infertility in patients with endometriosis.Human Reproduction 09/1995; 10(9):2419-22. DOI:10.1093/oxfordjournals.humrep.a136310 · 4.59 Impact Factor