Guest guest Posted June 20, 2009 Report Share Posted June 20, 2009 Companion pieces:http://www.NaturalNews.com/z024891.htmlPesticide Exposure Boosts Parkinson's Risk by 60 Percentby David Gutierrez, staff writer (NaturalNews) A new study has provided one of the strongest links yet between pesticide use and Parkinson's disease.A team of researchers from Duke University, Miami University and the Udall Parkinson's Disease Research Center of Excellence has found that people who were exposed to pesticides were substantially more likely to develop Parkinson's disease than closely related people who did not use so many pesticides, according to a study published in the journal BMC Neurology.----------http://pubs.acs.org/doi/full/10.1021/tx800218n?cookieSet=1 [Chemical Research in Toxicology]Glyphosate Formulations Induce Apoptosis and Necrosis in Human Umbilical, Embryonic, and Placental Cells Nora Benachour and Gilles-Eric Sralini*University of Caen, Laboratory Estrogens and Reproduction, UPRES EA 2608, Institute of Biology, Caen 14032, FranceChem. Res. Toxicol., 2009, 22 (1), pp 97–105DOI: 10.1021/tx800218nPublication Date (Web): December 23, 2008AbstractWe have evaluated the toxicity of four glyphosate (G)-based herbicides in Roundup ® formulations, from 105 times dilutions, on three different human cell types. This dilution level is far below agricultural recommendations and corresponds to low levels of residues in food or feed. The formulations have been compared to G alone and with its main metabolite AMPA or with one known adjuvant of R formulations, POEA. HUVEC primary neonate umbilical cord vein cells have been tested with 293 embryonic kidney and JEG3 placental cell lines. All R formulations cause total cell death within 24 h, through an inhibition of the mitochondrial succinate dehydrogenase activity, and necrosis, by release of cytosolic adenylate kinase measuring membrane damage. They also induce apoptosis via activation of enzymatic caspases 3/7 activity. This is confirmed by characteristic DNA fragmentation, nuclear shrinkage (pyknosis), and nuclear fragmentation (karyorrhexis), which is demonstrated by DAPI in apoptotic round cells. G provokes only apoptosis, and HUVEC are 100 times more sensitive overall at this level. The deleterious effects are not proportional to G concentrations but rather depend on the nature of the adjuvants. AMPA and POEA separately and synergistically damage cell membranes like R but at different concentrations. Their mixtures are generally even more harmful with G. In conclusion, the R adjuvants like POEA change human cell permeability and amplify toxicity induced already by G, through apoptosis and necrosis. The real threshold of G toxicity must take into account the presence of adjuvants but also G metabolism and time-amplified effects or bioaccumulation. This should be discussed when analyzing the in vivo toxic actions of R. This work clearly confirms that the adjuvants in Roundup formulations are not inert. Moreover, the proprietary mixtures available on the market could cause cell damage and even death around residual levels to be expected, especially in food and feed derived from R formulation-treated crops. ===========http://www.physorg.com/news164037691.htmlIndividuals who apply pesticides are found to have double the risk of blood disorderJune 12th, 2009A study involving 678 individuals who apply pesticides, culled from a U.S. Agricultural Health Study of over 50,000 farmers, recently found that exposure to certain pesticides doubles one's risk of developing an abnormal blood condition called MGUS (monoclonal gammopathy of undetermined significance) compared with individuals in the general population. The disorder, characterized by an abnormal level of a plasma protein, requires lifelong monitoring as it is a pre-cancerous condition that can lead to multiple myeloma, a painful cancer of the plasma cells in the bone marrow. "Previously, inconclusive evidence has linked agricultural work to an increased multiple myeloma risk. Our study is the first to show an association between pesticide exposure and an excess prevalence of MGUS," said lead author Ola Landgren, MD, PhD, of the National Cancer Institute (NCI), which is part of the National Institutes of Health, U.S. Department of Health and Human Services. "This finding is particularly important given that we recently found in a large prospective cancer screening study that virtually all multiple myeloma patients experienced a MGUS state prior to developing myeloma.""As several million Americans use pesticides, it's important that the risks of developing MGUS from the use of pesticides is known," added senior study author and NCI investigator Michael Alavanja, DrPH.The blood of study participants, who were individuals licensed to apply restricted-use pesticides, was assessed for MGUS prevalence. The median age of participants was 60 years (range 30-94 years), and all lived in either Iowa or North Carolina. Participants also completed questionnaires providing comprehensive occupational exposure information for a wide range of pesticides, including information such as the average number of days of pesticide use per year, years of use, use of protective gear while applying pesticides, and pesticide application methods. Information on smoking and alcohol use, cancer histories of the participants' first-degree relatives, and other basic demographic and health data were also obtained. Individuals with prior histories of lymphoproliferative malignancies (such as multiple myeloma or lymphoma) were excluded. Cancer incidence and mortality were monitored annually, and, after five years, follow-up interviews were conducted to update the information about participants' occupational exposures, medical histories, and lifestyle factors.For comparison, data were obtained from a large MGUS-screening study conducted by the Mayo Clinic, and the results from the pesticide-exposed group were compared with the assessments of 9,469 men from the general population of Olmsted County, Minnesota. The two groups were similar in terms of age, race, and educational attainment. Because of the low prevalence of women among workers who apply pesticides, women were excluded from the study. =====In accordance with Title 17 U.S.C. Section 107, this material is distributed without profit to those who have expressed a prior interest in receiving the included information for research and educational purposes. Quote Link to comment Share on other sites More sharing options...
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