[转载]转基因玉米让老鼠提前死亡——法国做了老鼠终生实验

来源: wjsun 于 2012-09-19 21:13:47 [档案] [博客] [旧帖] [给我悄悄话] 本文已被阅读：次 (22607 bytes)

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路透社伦敦 2012-9-19 报道（翻译）

实验鼠终生饲喂孟山都转基因玉米或者接触最畅销的除草剂农达，患上癌症和多种器官衰竭——法国周三发布研究结果。

领衔研究者过去曾经受到业界指责，这会令其他专家担心，他们的结论下得很匆忙。但是这次公布的发现，是对转基因农作物安全性争执打出的一记重拳。

不同往常的做法，这一次该研究组没有在发表论文之前让记者邀请外部评论。

论文发表在同行评审的“食品与化学毒理学”杂志上，在伦敦同步举行了新闻发布会。

卡昂大学的Gilles-Eric Seralini 和他的同事说，在实验鼠的饲料中加入抗除草剂的玉米NK603——孟山都公司的一个玉米品种，或者在饮水中包含低于美国安全标准允许的草甘膦水平，都导致了实验鼠相比对照组提前死亡。

实验鼠患上乳腺癌，发生肝肾衰竭。研究者说，50%的雄性和70%的雌性实验鼠提前死亡，对照组相应的数字分别是30%和20%。
Seralina 属于关注转基因安全性的一个研究团队，2009年 12月曾发表论文，质疑只做短期实验的做法。这次他们推进了一大步，对两年寿命的实验鼠做了全程追踪调查。

孟山都公司对较早的那份研究报告说，法国研究者的结论没有足够的根据。
Seralini相信，他们这次老鼠生命全过程实验的结果更加接近真实，比90天饲喂实验更具有权威性，转基因农作物的安全性都是以90天喂养的结果决定的，而90天在2年的寿命中，只相当于刚刚达到成年的年龄。

下面的照片来着法国“新观察家”杂志。

路透社新闻原文

(Reuters) - Rats fed a lifetime diet of Monsanto's genetically modified corn or exposed to its top-selling weedkiller Roundup suffered tumours and multiple organ damage, according to a French study published on Wednesday.

Although the lead researcher's past record as a critic of the industry may make other experts wary of drawing hasty conclusions, the finding will stoke controversy about the safety of GM crops.

In an unusual move, the research group did not allow reporters to seek outside comment on their paper before its publication in the peer-reviewed journal Food and Chemical Toxicology and presentation at a news conference in London.

Gilles-Eric Seralini of the University of Caen and colleagues said rats fed on a diet containing NK603 - a seed variety made tolerant to dousings of Roundup - or given water containing Roundup at levels permitted in the United States died earlier than those on a standard diet.

The animals on the GM diet suffered mammary tumours, as well as severe liver and kidney damage.

The researchers said 50 percent of males and 70 percent of females died prematurely, compared with only 30 percent and 20 percent in the control group.

Seralini was part of a team that flagged previous safety concerns based on a shorter rat study in a scientific paper published in December 2009 but this takes things a step further by tracking the animals throughout their two-year lifespan.

Monsanto said at the time of the earlier research that the French researchers had reached "unsubstantiated conclusions."

Seralini believes his latest lifetime rat tests give a more realistic and authoritative view of risks than the 90-day feeding trials that form the basis of GM crop approvals, since three months is only the equivalent of early adulthood in rats.