Birth defects research. Part B, Developmental and reproductive toxicology · 2013
A review of developmental and reproductive toxicity of CS2 and H2 S generated by the pesticide sodium tetrathiocarbonate.
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Silva Marilyn
Аннотация
BACKGROUND: Sodium tetrathiocarbonate (STTC) is an example of a pesticide that when prepared for use in aqueous solution releases two toxic products carbon disulfide (CS2 ) (active ingredient) and hydrogen sulfide (H2 S) in ambient air in equimolar concentrations resulting in potential exposure to workers and bystanders. CS2 and H2 S are pollutants that are generated from several pesticides as well as in industrial settings.
METHODS: Registrant submitted reports and open literature studies for STTC, CS2 and H2 S were reviewed. Previous reports suggest that CS2 was a concern as a developmental and reproductive toxicant. H2 S was also examined since it is a neurotoxicant and potentially harmful to developing fetuses.
RESULTS: STTC did not induce developmental or reproductive effects in animal studies. CS2 was a developmental neurobehavioral toxin in rat pups (inhalation no observed effect level [NOEL]=0.01 ppm). Reproductive effects occurred in male and female factory workers after CS2 exposure (NOEL=1 ppm). H2 S had developmental effects in rats at doses at or above those observed for nasal pathology (NOEL=10 ppm) but was not a reproductive or developmental toxin in humans.
CONCLUSIONS: The database for CS2 indicates a strong potential for developmental neurotoxicity in animals at low doses but it is lacking in acceptable, well-performed studies. There is also a lack of studies performed with CS2 and H2 S as a mixture.
METHODS: Registrant submitted reports and open literature studies for STTC, CS2 and H2 S were reviewed. Previous reports suggest that CS2 was a concern as a developmental and reproductive toxicant. H2 S was also examined since it is a neurotoxicant and potentially harmful to developing fetuses.
RESULTS: STTC did not induce developmental or reproductive effects in animal studies. CS2 was a developmental neurobehavioral toxin in rat pups (inhalation no observed effect level [NOEL]=0.01 ppm). Reproductive effects occurred in male and female factory workers after CS2 exposure (NOEL=1 ppm). H2 S had developmental effects in rats at doses at or above those observed for nasal pathology (NOEL=10 ppm) but was not a reproductive or developmental toxin in humans.
CONCLUSIONS: The database for CS2 indicates a strong potential for developmental neurotoxicity in animals at low doses but it is lacking in acceptable, well-performed studies. There is also a lack of studies performed with CS2 and H2 S as a mixture.