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Reply #8: PCBs stimulate uterine contractions and preterm labor plus other effects [View All]

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McCamy Taylor Donating Member (1000+ posts) Send PM | Profile | Ignore Wed Aug-15-07 02:41 PM
Response to Reply #7
8. PCBs stimulate uterine contractions and preterm labor plus other effects

"Exposure to PCBs can trigger premature labor; PCBs make the uterus more likely to contract.

"prenatal PCB exposures have been associated with prematurity, decrements in birth weight and gestation time, and behavioral and developmental deficits in later infancy and childhood, including decrements in IQ"

"A study of 242 pregnant women who consumed Lake Michigan fish was conducted. These fish are known to be contaminated with PCB's. The study tested to see if PCB levels in cord serum, materal serum, and milk were correlated with contaminated fish. It was found that consumption of fish was correlated with PCB levels in materal serum and milk. PCB serum levels increased with age. (Schwartz et al 1983). The infants born to women who consumed contaminated fish were 160 to 190 grams lighter on average than controls. The infant's head circumference was 0.6 to 0.7 cm smaller than controls. (Fein et al 1984)"

"A study on female rats exposed the rats orally to PCBs for one month. This exposure had deleterious effects on the reproduction. Estrous cycles were prolonged, sexual receptivity decreased, and vaginal bleeding occurred during gestation. The rats also had smaller sized litters. The offspring of these rats showed a slower rate of weight gain than controls, and higher mortality."

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