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Old 08-16-2011, 10:26 AM   #1
hgt5s0nso
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Default 吃热狗可能会基因突变?

化学家在一项最新的研究中发现,热狗中可能包含使DNA突变的成分,增加消费者患癌症的风险。

科学家发现,水宜生水杯,不同类型的热狗中含有不同的突变物质,总体来说有240种,内布拉斯加大学医学中心的化学家辛德尼&mi ddot;莫韦什告诉《生命科学》说:“如果热狗中包含有害物质,人们就应该改变生产方法。” 以前有研究把热狗与肠癌联系在一起。热狗中含有亚硝酸钠,而亚硝酸钠有助于形成一种被称为N亚硝酸钠的物质 ,在用动物进行实验后证明,后一种物质会引发癌症。从超市购买的热狗中提取的物质含有这种使DNA突变的成 分,当把这种成分加入进沙门氏菌中时,那么热狗因亚硝酸钠而引起的DNA突变水平是正常的两到四倍,研究人 员解释说,在大肠中引发DNA突变就会增加患肠癌的危险。莫韦什说:“不过我不想说,你不能吃热狗。”研究 人员还将做一些试验,盟特新奇特,给老鼠吃热狗,看一看这些吃了热狗的老鼠是否会得肠癌或者有患癌症的征兆。

总部设在华盛顿的美国肉类研究所基金会主席詹姆斯·霍德戈斯也在关注这一研究,他说:“这一 有关引发癌症危险的报告应该进一步进行研究,这种物质是否会让人类增加患癌症的危险还没有被确定。”莫韦什 也说,含有危险物质的食品不限于热狗,ad收腹运动机价格,烤鱼以及黄豆酱这样的调味品中也含有这种化学物质。
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