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Inhibitory effect of ricin on the development of preimplantation mouse embryos
Journal of Toxicology and Environmental Health
|August 1, 1983
Abstract:
Preimplantation mouse embryos were exposed to ricin, a plant toxin, in vitro and in vivo. The effect was evaluated by morphological observations of the exposed embryos as well as by means of protein synthesis. Ricin was highly toxic to the preimplantation mouse embryo in vitro, the effect being greater on the 2-cell than on the 4-8 cell stage. Intraperitoneal injection of ricin induced a small number of fetuses with exencephaly.
Insights
Ricin, a plant toxin, is highly toxic to early mouse embryos in vitro. In vivo exposure led to fetal exencephaly, indicating developmental toxicity of ricin.
Area of Science:
- Developmental toxicology
- Embryology
- Pharmacology
Background:
- Ricin is a potent plant-derived toxin.
- Understanding ricin's impact on early development is crucial for risk assessment.
Purpose of the Study:
- To evaluate the toxicity of ricin on preimplantation mouse embryos.
- To assess the effects of ricin exposure in vitro and in vivo on embryonic development.
Main Methods:
- Exposure of preimplantation mouse embryos to ricin in vitro.
- In vivo exposure through intraperitoneal injection in mice.
- Morphological assessment and protein synthesis analysis of exposed embryos.
Main Results:
- Ricin demonstrated high toxicity to mouse embryos in vitro, with greater impact on the 2-cell stage compared to the 4-8 cell stage.
- In vivo administration of ricin resulted in a small incidence of fetal exencephaly.
Conclusions:
- Ricin poses a significant toxic risk to early mammalian embryonic development.
- In vivo exposure to ricin can lead to specific developmental abnormalities like exencephaly.