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新发现:冬虫夏草不含抗癌成分“喷司他丁”
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Topic: 新发现:冬虫夏草不含抗癌成分“喷司他丁” (Read 161 times)
SuperPROLg
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新发现:冬虫夏草不含抗癌成分“喷司他丁”
October 20, 2017, 10:05:30 AM
#1
冬虫夏草一直以其营养价值高,具抗癌作用,备受人们的青睐。近日,一项最新研究成果表明,冬虫夏草中不含具抗癌功效的“喷司他丁”(Pentostatin),及由此生物合成产生的虫草素(Cordycepin)。
据澎湃新闻报导,10月19日,由中国科学院上海植物生理生态研究所研究员王成树,带领课题组在国际学术期刊《细胞·化学生物学》(Cell Chemical Biology)上在线发表论文,宣布冬虫夏草中不含虫草素,并称这是基因决定的。
王成树介绍,课题组在研究虫草素的合成路径时意外发现,蛹虫草中含有虫草素,一种抗癌活性成分“喷司他丁”,含有“喷司他丁”,说明蛹虫草具有一定的抗癌功能。
此外,一种霉菌构巢曲霉也可以合成“喷司他丁”和虫草素。在野外,冬虫夏草可能沾染上这种霉菌,从而含有微量的虫草素。
早在1991年,“喷司他丁”就作为抗白血病药物,通过美国食药监局(FDA)的批准,在美国上市。其产品主要通过化学合成的方法生产。
王成树提醒,人们不宜过量摄入虫草素。虫草素可能造成人类基因变异,是其抗癌的机理,同时也会对人体中增殖速度较快的细胞产生负面影响。
什么是虫草呢?昆虫被真菌侵染,得了真菌病后,其死亡的残体——菌虫复合体,就是虫草。
自然界中,除了蛹虫草,还有蜘蛛、蚂蚁、蜜蜂、蝗虫等类型的虫草。至今已发现1,500多种虫草
Once a transaction has 6 confirmations, it is extremely unlikely that an attacker without at least 50% of the network's computation power would be able to reverse it.
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Duckling
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Re: 新发现:冬虫夏草不含抗癌成分“喷司他丁”
October 20, 2017, 06:39:41 PM
#2
冬虫夏草都是给有钱人准备的,我们普通老百姓也吃不起,即使没有抗癌成分也吃不起
violet4
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Re: 新发现:冬虫夏草不含抗癌成分“喷司他丁”
October 21, 2017, 02:24:55 AM
#3
都被爆炒起来,已经吃不起啦
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