Related Experiment Videos
Immunization with Bin1b decreases sperm motility with compromised fertility in rats
Wenming Xu1, Xiaohu Zhang, Wenying Chen
1Epithelial Cell Biology Research Center, Li Ka Shing Institute of Health Sciences, Department of Physiology, Key Laboratory for Regenerative Medicine of Ministry of Education, Chinese University of Hong Kong, Hong Kong, People's Republic of China.
Insights
Immunizing male rats with the synthetic Bin1b peptide reduced sperm motility and fertility by 25%. This peptide-based contraceptive approach shows promise for male reproductive health research.
Area of Science:
- Reproductive biology and immunology.
- Contraceptive development.
Background:
- The development of novel male contraceptives is an ongoing area of research.
- Targeting sperm function is a key strategy for male contraception.
Purpose of the Study:
- To evaluate the contraceptive potential of a synthetic Bin1b peptide in vivo in rats.
- To assess the impact of Bin1b peptide immunization on sperm function and fertility.
Main Methods:
- Male Wistar rats were immunized with a synthetic Bin1b peptide conjugated with KLH.
- Sperm motility, fertility rates, and testicular histology were analyzed post-immunization.
- Enzyme-linked immunosorbent assay (ELISA) was used to measure anti-Bin1b antibody titers.
Main Results:
- Bin1b immunization led to increased anti-Bin1b antibody levels.
- A significant decrease in sperm motility was observed in immunized rats.
- Fertility was reduced by 25% in rats immunized with the Bin1b peptide.
- No adverse effects on testicular or epididymal histology were noted.
Conclusions:
- Immunization with the Bin1b peptide effectively impairs sperm motility.
- The Bin1b peptide demonstrates contraceptive ability by compromising sperm fertilizing capacity.
Objective:
To evaluate the contraceptive ability of a synthetic Bin1b peptide in vivo in the rat.
Design:
Basic research.
Setting:
University laboratory animal service center.
Animal(S):
A peptide-based immunization model was developed; rats were injected with the Bin1b specific peptide.
Intervention(S):
A synthetic peptide segment, MCRSGERKGDICSDP-conjugated with KLH (Bin1b), was used to immunize male wistar rats. Freund's complete adjuvant was used as a control.
Main Outcome Measure(S):
Anti-Bin1b levels in sera were evaluated by enzyme-linked immunosorbent assay (ELISA). Anti-Bin1b and control antisera were used to evaluate sperm function inhibition in vitro. The fertility of immunized rats was determined by mating experiment. The testis and epididymides were analyzed by histology.
Result(S):
Histological studies showed no evidence of orchitis or epididymitis in Bin1b-immunized animals. ELISA results revealed that the titers of anti-Bin1b antibodies in serum increased with the immunization process in immunized rats. Sperm recovered from the corpus epididymidis of the Bin1b-immunized animals exhibited a significant decrease in motility. Immunization of Bin1b also caused a reduction (25%) in fertility after the mating experiment.
Conclusion(S):
The present study has demonstrated that immunization with Bin1b peptide specifically interferes with sperm motility, resulting in a compromised fertilizing capacity of sperm.
Related Concept Videos
01:23Infertility in Males
01:41Spermatogenesis