Organophosphate poisoning

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Organophosphate poisoning
« on: January 16, 2016, 07:58:09 PM »


Organophosphate poisoning


From Wikipedia, the free encyclopaedia

Wilful suppression of information and cover up by the British Government[edit]
Recent press stories reveal a deliberate cover up and lying by the UK government.[39]

United States[edit]
Under a 1988 amendment to the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA), the U.S. Environmental Protection Agency (EPA) regulates organophosphate pesticides[40] Its focus was initially on registering pesticides for use on food crops. No pesticide can be sold in the United States before the EPA has reviewed the manufacture's application for registration and determined that the use of the product will not present an unreasonable risk to the public or the environment.[41] In 1996, with the passage of the Food Quality Protection Act, Congress required the EPA to reassess all existing pesticide tolerances with specific consideration for children.[42] This resulted in a 10-year review process of the health and environmental effects of all pesticides, beginning with the organophosphates. As part of that process, in 1999 the EPA announced a ban the use of organophosphate pesticide methyl parathion and significant restrictions on the use of another OP, azinphos methyl, in what they called "kid's food".[43] The review process was concluded in 2006 and eliminated or modified thousands of other uses of pesticides.[44] Other legislative action has been taken to protect children from the risks of organophosphates.
Many non-governmental and research groups, as well as the EPA's Office of Inspector General, have published concerns that the review did not take into account possible neurotoxic effects on developing fetuses and children, an area of developing research. OIG report. A group of leading EPA scientists sent a letter to the chief administrator, Stephen Johnson, decrying the lack of developmental neurotoxicity data in the review process. EPA Letter EHP article New studies have shown toxicity to developing organisms during certain "critical periods" at doses much lower than those previously suspected to cause harm.[45]
Even the restrictions that did successfully pass have been controversial. For example, in 1999 the EPA restricted the use of chlorpyrifos in households (under the commercial name Dursban). However, the EPA did not limit its use in agriculture. Chlorpyrifos remains one of the most widely used pesticides.[46] This may soon change. On February 8, 2013 the EPA requested comment on a preliminary evaluation of the potential risks to children and other bystanders from volatilization of chlorpyrifos from treated crops[47]

Research[edit]
Currently, more research is being done on animal fetuses to determine the effects of OP's during critical periods of development[citation needed]. Due to children's decreased size, faster rate of respiration, and continuing organ development, this area is important to research. Research to determine the variability on the PON1 enzyme in humans is also currently being researched.
The use of the organophosphates in aviation lubricating oils and hydraulic fluids and its impact on health and flight safety is currently being researched. Aerotoxic syndrome is a medical condition allegedly caused by exposure to contaminated bleed air.
Purdey (1998) suggested that organophosphates, in particular Phosmet, induced the transmissible spongiform encephalopathy epidemic of BSE.[48] A European Union food safety Scientific Steering Committee examined the evidence and did not find a link.[49]

References[edit]

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