Some newborns may be 26 to 50 times more susceptible to exposure to certain organophosphate pesticides than other newborns, and 65 to 130 times more sensitive than some adults, according to a new study by researchers from the University of California, Berkeley, and the University of Washington.
The study, to be published Thursday, March 2, in the journal Pharmacogenetics and Genomics, reveals far greater variability in susceptibility to pesticides than previously predicted. Current U.S. Environmental Protection Agency (EPA) standards require an extra tenfold safety factor to protect children compared with adults if there are gaps in information about the childrens susceptibility. The EPA may select a lower safety factor if it determines that enough information is available, and based on an EPA review, many other pesticides have lower or no additional safety factors.
But the new study "raises the question of whether current standards for safe levels of pesticide exposure are sufficiently protective of a vulnerable population," said Nina Holland, UC Berkeley adjunct professor of environmental health sciences and co-lead author of the paper. "Based on our study, I feel that more research is urgently needed to establish whether the standards need to be re-evaluated."
Liese Greensfelder | EurekAlert!
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Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
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