Abstract
The proposed increased use of methanol (MeOH)-based fuels raises the concern for an increased risk for MeOH toxicity. MeOH, which is detoxified in part via a folate-dependent pathway, is known to be teratogenic in rodents. Previous observations have implicated maternal folate status as a critical modulator for the developmental toxicity of MeOH. The current study extends these findings, examining the effect of maternal dietary folate intake on fetal folate stores, as well as identifying a possible marker for the prediction of the developmental toxicity of MeOH. Virgin female CD-1 mice were assigned to diets containing either 400 (marginal) or 1200 (control) nmol folic acid (FA)/kg, and and 1% succinylsulfathiazole for 5 weeks prior to mating and throughout breeding and gestation. From gestation day (GD) 6 through 10 dams were given by gavage deionized, distilled water (dH2O) or MeOH at 2.5 g/kg body weight, twice daily. On GD 18, mice were weighed and killed and the liver, kidneys, and gravid uteri removed and weighed. Implantation sites, live and dead fetuses, and resorptions were counted; fetuses were weighed individually and examined for cleft palate and exencephaly. The marginal FA dietary treatment resulted in low maternal...Continue Reading
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