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May 21, 2012
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CHE Fertility and Reproductive Health and CHE EMF working groups call: EMF and Reproductive Health Risks
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Fertility/Repro Health News
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11 May Study: Developmental toxicants and signaling pathways on the migration of human neural crest cells. The migration assay of neural crest assay faithfully models human neural crest migration, and reveals impairment of this function by developmental toxicants with good sensitivity and specificity. Environmental Health Perspectives.
11 May Study: BPA Interferes with Proliferative Activity and Development of Steroidogenic Capacity in Rat Leydig Cells. The presence of bisphenol A (BPA) in consumer products has raised concerns about potential adverse effects on reproductive health. Testicular Leydig cells are the predominant source of the male sex steroid hormone testosterone, which supports the male phenotype. The present report describes the effects of developmental exposure of male rats to BPA by gavage of pregnant and lactating Long-Evans dams. Biology of Reproduction.
11 May Report: Substance Use During Pregnancy Varies by Race and Ethnicity. A new report shows that 21.8 percent of pregnant White women aged 15 to 44 currently (within the past 30 days) smoked cigarettes. The study conducted by the Substance Abuse and Mental Health Services Administration (SAMHSA) also showed that cigarette smoking levels among pregnant White women were significantly higher than the levels among pregnant Black women (14.2 percent) and pregnant Hispanic women (6.5 percent) in the same 15 to 44 age range. Stone Hearth News.
11 May REACH chemical safety review: Re-opening a can of worms? Five years after its adoption, the European Commission is preparing to review the controversial REACH regulation, which for the first time required chemical manufacturers to justify that their products are safe for consumers before placing them on the market. Euractiv, Belgium.
11 May How international chemical regulations are changing American supply chains. Arguments against chemical regulation have been top of mind recently; the odds seem to be stacked against large-scale reform of US legislation. But that doesn?t mean US companies are off the hook when it comes to toxic chemicals. Forbes.
11 May Household chemicals' 'cocktail effect' raises cancer concerns for watchdog. Europe's environmental watchdog, the European Environment Agency, has warned that products containing endocrine disrupting chemicals should be treated with caution until their true effects are better known. The Guardian, United Kingdom.
10 May US scientist: 'Many routes of exposure' to endocrine disruptors. Shanna H. Swan, a renowned scientist specialising in reproductive medicine, has warned about the health effects of endocrine disrupting chemicals known as phthalates which can end up in food via pesticides or plastics. In an interview with EurActiv, she calls on regulators to better protect consumers against those "hidden chemicals". Euractiv, Belgium.
10 May Toxic roulette. A new study of fetal exposure to BPA, a plastic additive found in some food packaging, shows that the chemical altered the mammary gland development in monkeys, reinforcing concerns that BPA - bisphenol A - could contribute to breast cancer in women. McClatchy Newspapers.
9 May Flame retardants investigation: Chemical industry distorts science. Twenty-five years ago, scientists gathered in a cramped government laboratory and set fire to specially designed chairs, TVs and electrical cables packed with flame retardants. For the next half-hour, they carefully measured how much the chemicals slowed the blaze. Chicago Tribune, Illinois.
8 May Study: Trihalomethanes, chlorite, chlorate in drinking water and risk of congenital anomalies. This was the first study showing an excess risk of different congenital anomalies related to chlorite and chlorate exposure via drinking water: further research is needed to confirm the observed relationships in large datasets, specifically for chlorate, an unregulated DBP. Environmental Research.
8 May Food-packaging chemical could lead to breast cancer, study finds. A new study of fetal exposure to BPA, a plastic additive found in some food packaging, shows that the chemical altered the mammary gland development in monkeys, reinforcing concerns that BPA - bisphenol A - could contribute to breast cancer in women. McClatchy Newspapers
8 May Big Tobacco wins fire marshals as allies in flame retardent push. The problem facing cigarette manufacturers decades ago involved tragic deaths and bad publicity, but it had nothing to do with cancer. It had to do with house fires. The industry insisted it couldn't make a fire-safe cigarette and instead promoted flame retardant furniture. Chicago Tribune, Illinois.
5 May Testing shows treated foam offers no safety benefit. The chemical industry's leading trade group says fire-snuffing chemicals "can mean the difference between life and death." But when scientists touched a small flame to a pair of upholstered chairs - one with a flame retardant in the foam and one without- both were engulfed in flames within four minutes. Chicago Tribune, Illinois. [related stories]
5 May Chemical manufacturers rely on fear to push flame retardant furniture standards. Dr. David Heimbach's passionate testimony about a baby's horrific death by fire made health concerns about flame retardants sound abstract and petty. But there was a problem with his testimony: It wasn't true. Chicago Tribune, Illinois.
5 May Vermont poised to become first state to ban fracking. Vermont is poised to become the first state to ban a controversial natural gas drilling technique known as fracking. The Legislature finished work on the measure Friday, and it's on its way to Gov. Peter Shumlin for his signature. Vermont Public Radio, Vermont.
5 May Study: High maternal choline intake may reduce diabetes risk in children Cornell University researchers found that women in their third trimester of pregnancy who consumed 930 milligrams of choline daily had babies with a 33% lower cortisol concentration than those who consumed 430 milligrams. Extra choline consumption during pregnancy could lower the odds of developing stress-related conditions such as hypertension and type 2 diabetes throughout the child's life, one researcher said. The findings appear in The Journal of the Federation of American Societies for Experimental Biology. The Huffington Post.
5 May Study: Reproductive Technologies and the Risk of Birth Defects.NEJM. Data from more than 300,000 births in South Australia from 1986 to 2002 showed that 8.3% of children conceived through some form of assisted reproductive technology developed a birth defect compared to 5.8% of children conceived naturally. The use of intracytoplasmic sperm injection was tied to a 57% increased risk of a birth defect, while in vitro fertilization showed no statistically significant increased risk, researchers wrote in the New England Journal of Medicine.
5 May Study: Neonatal Plant Estrogen Exposure Leads to Adult Infertility in Female Mice. A paper published May 2 in Biology of Reproduction describes the effects of brief prenatal exposure to plant estrogens on the mouse oviduct, modeling the effects of soy-based baby formula on human infants. The results suggest that exposure to estrogenic chemicals in the womb or during childhood has the potential to affect a woman's fertility as an adult, possibly providing the mechanistic basis for some cases of unexplained female infertility. Science Daily.
5 May CHE Teleconference: Electromagnetic frequency (EMF) waves and Reproductive Health Risks. May 21st, 10 a.m. Pacific / 1 pm Eastern. EMF waves from cell phones, computers and other wireless electronic devices are ubiquitous in our environment. The research base linking EMF exposure to negative reproductive health effects continues to grow. This teleconference will examine recent research on EMF exposure, infertility, and negative pregnancy outcomes. Join us to hear from top international experts in the field: Drs. Ashok Agarwal, De-Kun Li, and Carlo V. Bellieni.
5 May Study: Reduced Sperm Viability in Offspring of Animals Treated With Tetracycline. Tetracycline-treated males exhibited significantly reduced sperm viability compared to control males, and transmitted this toxic effect of tetracycline on sperm to their untreated sons but not to their F2 grandsons. These results are consistent with tetracycline-induced epigenetic changes in the male germline, and suggest the need for further investigation of transgenerational effects of tetracycline on male reproductive function.
Nature.
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