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Posted Tue Nov 9 2010: from CBC News:
Bisphenol A linked to sterility in roundworms
The controversial chemical bisphenol A can render roundworms sterile, kill their embryos, and damage their chromosomes, according to a new lab study. The findings are sure to re-ignite debate over the health safety of the chemical commonly known as BPA, which is widely used in such consumer products as hard plastic toys, bottles and food container linings. Geneticists at the Harvard Medical School found that in roundworms exposed to BPA, some DNA repair processes were impaired in the very cells that are essential for the formation of sperm and eggs. Exposure to the chemical also damaged chromosomal integrity and led to cell death, the authors found. While chromosomes in the control group of roundworms appeared normal, the chromosomes in the group exposed to BPA were frayed and fragmented. That led to embryo death and less fertile worms.
[Read more stories about: bisphenol A, falling fertility, health impacts]
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