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Related Experiment Videos

Antisperm antibody detection using concurrent cytofluorometry and indirect immunofluorescence microscopy.

E B Sinton1, D C Riemann, M E Ashton

  • 1Department of Pathology, Swedish Medical Center, Englewood, Colorado 80110.

American Journal of Clinical Pathology
|February 1, 1991
PubMed
Summary

This study detected anti-sperm antibodies in infertility patients using flow cytometry and microscopy. Significant antibody levels were found in both males and females, suggesting altered sperm antigens may cause infertility-related immunity.

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Area of Science:

  • Immunology
  • Reproductive Medicine
  • Cell Biology

Background:

  • Anti-sperm antibodies (ASA) are implicated in infertility.
  • Detecting ASA in serum and seminal plasma is crucial for diagnosis.

Purpose of the Study:

  • To establish and validate a flow cytometry and epifluorescence microscopy assay for detecting ASA.
  • To investigate the prevalence and characteristics of ASA in infertile patients.

Main Methods:

  • Concurrent use of flow cytometry and epifluorescence microscopy.
  • Utilized fluorescein-conjugated antihuman immunoglobulins for antibody detection.
  • Tested assay conditions with monoclonal antisperm antibodies.
  • Analyzed sperm membrane integrity and antibody binding localization.

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Main Results:

  • The assay successfully detected ASA in serum and seminal plasma.
  • Sperm membrane integrity affected antibody binding patterns.
  • Significant ASA levels were observed in 21.6% of females and 40.8% of males with infertility.
  • Differences in antibody localization between serum and seminal plasma suggest altered sperm antigens.

Conclusions:

  • The developed assay is effective for ASA detection.
  • Immunity to sperm may arise from altered sperm antigens in some infertility cases.
  • Findings support further investigation into antigen alteration as a cause of infertility.