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MHC-associated immunopotentiation affects the embryo response to teratogens
A Torchinsky1, A Fein, H J Carp
1Department of Embryology and Teratology, Sackler School of Medicine, Tel-Aviv University, Israel.
Clinical and Experimental Immunology
|December 1, 1994
Summary
Maternal immunostimulation with allogeneic cells can protect embryos from environmental teratogens like cyclophosphamide (CP) and QD. This immune modulation reduces malformations and resorptions, enhancing fetal development.
Area of Science:
- Immunology
- Developmental Toxicology
- Reproductive Biology
Background:
- Environmental teratogens pose risks to embryonic development.
- The role of maternal immune responses in mitigating teratogenic effects is not fully understood.
Purpose of the Study:
- To investigate if maternal immunostimulation can modify the teratogenic effects of cyclophosphamide (CP) and 2,3-quinoxalinedimetanol,1,4-dioxide (QD).
- To explore the impact of intrauterine immunization on embryo tolerance to reference teratogens (RT).
Main Methods:
- Two animal models were used: C57Bl/6 mice immunized intrauterine with splenocytes before mating, and mice treated with RT during a second pregnancy after varied mating combinations.
- Mice were exposed to CP or QD at specific gestational days, with outcomes assessed for implantation, resorptions, fetal viability, and malformations.
Main Results:
- Intrauterine immunization with allogeneic paternal splenocytes significantly enhanced embryo tolerance to CP and QD, reducing resorption rates and malformations.
- This immunization led to a notable increase in fetal weight in CP-treated females.
- Syngeneic splenocytes did not significantly alter embryo sensitivity to teratogens.
Conclusions:
- Fetomaternal immune interactions, specifically maternal immunostimulation, can significantly influence embryonic response to environmental teratogens.
- Allogeneic immunization offers a protective effect against teratogenic insults, highlighting the potential of immune modulation in developmental toxicology.