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Acetazolamide Teratogenesis: Interaction of Maternal Metabolic and Respiratory Acidosis in the Induction of Ectrodactyly in C57BL/6J Mice

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Journal Teratology
Date 1984 Oct 1
PMID 6436998
Citations 2
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Abstract

Exposure of C57BL/6J mice to 20% CO2 for 8 hours on day 10 of gestation has been shown to produce right-sided postaxial forelimb ectrodactyly in 23% of the offspring. Carbon dioxide exposure produces a dramatic increase in maternal plasma CO2 accompanied by an inevitable decrease in plasma pH, both of which appear to be involved in the induction of ectrodactyly. However, the low incidence of ectrodactyly associated with NH4Cl-induced metabolic acidosis suggests that the primary teratogenic factor in respiratory acidosis is elevated CO2 tension. This conclusion is supported by the observation that moderation of maternal plasma pH in the face of sustained elevated PCO2 fails to reduce the incidence of ectrodactyly; moreover, there is a strong correlation between maternal serum CO2 content and the incidence of ectrodactyly.

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