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Effects of concurrent prenatal exposure to rubratoxin B and T-2 toxin in the mouse
Abstract:
T-2 toxin and rubratoxin B are toxic mold metabolites that are known mammalian teratogens. These mycotoxins were given individually or together by ip injection to pregnant CD-1 mice at doses of 0.5 (T-2 toxin) and 0.4 (rubratoxin B) mg/kg on day 10 of gestation. The combination resulted in an increased adverse effect on both fetal weight and mortality of the conceptus in comparison with either treatment given alone at the doses used. Only T-2 toxin resulted in gross malformations, and these were not increased in incidence by addition of rubratoxin B.
Insights
T-2 toxin and rubratoxin B are toxic mold metabolites. When given together to pregnant mice, they increased adverse effects on fetal weight and mortality more than when given alone. T-2 toxin alone caused malformations.
Area of Science:
- Toxicology
- Developmental Biology
- Mycotoxicology
Background:
- T-2 toxin and rubratoxin B are mycotoxins with known teratogenic potential in mammals.
- Understanding the combined effects of these toxins is crucial for assessing reproductive risks.
Purpose of the Study:
- To investigate the individual and combined teratogenic effects of T-2 toxin and rubratoxin B in pregnant mice.
- To evaluate the impact on fetal development, including weight and mortality.
Main Methods:
- Pregnant CD-1 mice were administered T-2 toxin (0.5 mg/kg) and rubratoxin B (0.4 mg/kg) individually or in combination via intraperitoneal injection on day 10 of gestation.
- Fetal weight and mortality rates were assessed.
Main Results:
- The combination of T-2 toxin and rubratoxin B resulted in significantly greater adverse effects on fetal weight and conceptus mortality compared to individual treatments.
- Gross malformations were observed only with T-2 toxin exposure; rubratoxin B did not increase their incidence when administered concurrently.
Conclusions:
- Combined exposure to T-2 toxin and rubratoxin B exacerbates developmental toxicity in mice.
- T-2 toxin is the primary agent responsible for gross malformations in this study, with rubratoxin B not enhancing this specific effect.