Vaginally Administered PEGylated LIF Antagonist Blocked Embryo Implantation and Eliminated Non-Target Effects on Bone in Mice
2011

Vaginally Administered PEGylated LIF Antagonist Blocked Embryo Implantation in Mice

Sample size: 4 publication Evidence: moderate

Author Information

Author(s): Menkhorst Ellen, Zhang Jian-Guo, Sims Natalie A., Morgan Phillip O., Soo Priscilla, Poulton Ingrid J., Metcalf Donald, Alexandrou Estella, Gresle Melissa, Salamonsen Lois A., Butzkueven Helmut, Nicola Nicos A., Dimitriadis Evdokia

Primary Institution: Prince Henry's Institute, Clayton, Australia

Hypothesis

Can a PEGylated LIF inhibitor (PEGLA) effectively prevent embryo implantation when administered vaginally in mice?

Conclusion

Vaginally administered PEGLA effectively blocked embryo implantation in mice without affecting bone remodeling.

Supporting Evidence

  • Vaginally-applied PEGLA blocked implantation in mice.
  • Vaginal application reduced the total dose of PEGLA required to block implantation.
  • PEGLA had no effect on bone remodeling when administered vaginally.

Takeaway

This study shows that a special drug can be put in the vagina to stop pregnancy without causing problems for bones.

Methodology

Mice were treated with vaginal applications of PEGLA and the number of implantation sites was counted.

Limitations

The study was conducted in mice, and results may not directly translate to humans.

Participant Demographics

C57BL6/J mice, both mated and non-mated.

Statistical Information

P-Value

p=0.1367

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1371/journal.pone.0019665

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