ある研究では、ラット飼育トランスジェニック腫瘍は多くを持っていることを示しています
One study indicates that rats fed transgenic tumors have more
The work is the first to point a real risk in these cultures
The European Food Safety Agency will investigate the results
Many scientists doubt the rigor of the work
Un estudio indica que ratas alimentadas con transgénicos tienen más tumores
El trabajo es el primero que señala un riesgo real en estos cultivos
La Agencia Europea de Seguridad Alimentaria investigará los resultados
Muchos científicos dudan del rigor del trabajo
Luis Doncel / Emilio de Benito Bruselas / Madrid 19 SEP 2012 - 20:03 CET
One study indicates that rats fed transgenic tumors have more
The work is the first to point a real risk in these cultures
The European Food Safety Agency will investigate the results
Many scientists doubt the rigor of the work
Luis Doncel / Emilio de Benito Brussels / Madrid 19 SEP 2012 - 20:03 CET
Tumors the size of a ping-pong ball detected in rats fed GM corn by a team of researchers could become the first scientific evidence of the risks associated with genetically modified foods. "For the first time ever, we have evaluated a transgenic and a pesticide for their impact on health more broadly that performed so far by governments and industry. The results are alarming, "said Gilles-Eric Séralini, director of the study by the University of Caen, western France, and published in the journal Food and Chemical Toxicology.
French scientists have researched for two years to 200 laboratory rats which were divided into three groups: those that fed GM maize NK603 in different proportions (11%, 22% and 33% of their diet), those to also provided him Roundup, the herbicide to which the genetic modification makes them resistant, and rodents that only grew with non-GM maize. The results are that after 17 months from the start of the study, had died five times more male animals fed with genetically modified maize.
The journal Food and Chemical Toxicology has published other studies by the U.S. company Monsanto, manufacturer of both transgenic and herbicide-analyzed in refusing the toxicity of GM foods, but always on an analysis period of 90 days, while in this research the term has been extended to two years. "The results show mortalities faster and stronger in rats that have consumed the two products," says Séralini.
moreFrance vetoes the most common transgenic Spain Paris expresses doubts aboutThe government says that "GM maize is more environmentally friendly than conventional"
The effects of the study have come immediately. The Minister of Agriculture of France, Stéphane Le Foll, has claimed that the procedures for GM foods approval in the EU are more stringent. Paris had already activated in February 2008, a "safeguard clause" to skip the approval of the European authorities MON810 transgenic maize made by Monsanto.
Green MEP José Bové, one of the biggest opponents of genetically modified products in the House Euroepa has asked Brussels to immediately suspend the authorization of this type of food. The European Commission said it has asked the agency for food safety to review the results of the study. "If these facts are proven scientifically, draw our consequences," a community spokesman. The first effect could be freeze Monsanto's request to renew the permission to cultivate MON 810 transgenic seed.
But the soundness of the study has not convinced everyone. To begin with, by the profile of the principal investigator, known for its anti-GMO positions and for participating in the panel of the French government to counter the possibility that introduce more varieties of these crops.
Professor at the Autonomous University of Madrid and researcher and director of the Center for Scientific Culture Molecular Biology Severo Ochoa José Antonio López Guerrero shows many doubts about the job. "This is the first time you publish one with these results, and the magazine is not a high rate of impact," says as the first safeguard. But above all, he says, and says that he has discussed with colleagues, that "the work seems very biased". "It would be desirable to repeat with better controls and more number. With the article, you would serious statistical analysis. It seems that everything was designed to give these results, "he says. In this line, suggests that the animal chosen seems done on purpose to present anomalies. "I've worked with that kind of rat, Dawley, and is very sensitive to the changes," he adds. But above all, his basic argument, which is what makes you doubt - "do not reject outright until more tests" - is that "in the United States in 20 years, there has not been a single case of income hospital for consumption of GM ". "Instead," he says in contrast, "organic crops such as bean sprouts in Germany that caused the false cucumber crisis have ended dead."
The work seems very biased, "says a Spanish researcher
In the web of scientific Science Media Centre, Maurice Moloney, Rothamsted Research Institute, agrees with the criticism of the trial. "Although the article was published in a peer-reviewed journal [other scientists], there are anomalies that should have been resolved during this process. For a text with a potentially important finding, would have been more satisfying to have seen something more conventional statistical analysis, "writes Moloney. The researcher describes the methodological flaws and abounds in the animal chosen has a great tendency to tumors in all circumstances (and, in fact, also appeared in the control groups).
Coincides with him David Spiegelhalter, Cambridge University: "I'm willing to accept these results unless replicate [than other scientific groups the repeat] properly" writes. Wendy Harwood, the John Innes Centre, agrees with the criticism, but notes that there is a part of the study that appears more solid: the risk of consuming insecticide.
Interestingly, the manufacturer of corn, Monsanto, has had a more cautious reaction. "In the same way that we take very seriously all complaints addressed to our products, we would like these mantuviesen the same level of scientific scrutiny that our products. It's not the first time complaints are received by these same people and other pressure groups that do not meet these criteria. The earlier complaints were rejected subsequently by other articles reviewed by other scientists and by the European Food Safety Authority (EFSA), "said the company in a note.
Monsanto AFRMA sometimes already been challenged trials
In fact, the EFSA published its latest report on this particular type of GM maize in June 2009, and the conclusions were that "is as safe in regard to the effects on human and animal health and the environment as its counterpart, conventional maize. " Later this assessment has rpetido three times (most recently in September 2011), this time to discuss the safety of this product in combination with other variants transgenic corn.
Monsanto adds that "since its adoption, a large number of scientific articles on biotech crops have confirmed, repeatedly, the safety of our products, which has helped the company has obtained the approval of various regulatory authorities all around the world. "
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