科学60秒:非洲人也可能患疟疾
来源：沪江听写酷
2011-07-17 10:00
A new development in malaria:
“Plasmodium vivax, the world’s most common malaria parasite, now infects people previously considered to be ____1____.”
Peter Zimmerman from Case Western Reserve University school of medicine spoke at the AAAS meeting in Washington on February 19th.
“So, red blood cells of most African people do not ____2____ the Duffy blood-group protein. Now, the Duffy blood-group protein is ____3____ for Plasmodium vivax to get into the red cell. Duffy-negative Africans have been considered to be resistant to Plasmodium vivax.”
Zimmerman studied Malagasy populations on Madagascar. He found that 10 percent of Duffy-negative subjects were in fact ____4____ Plasmodium vivax.
“So we’ve shown that Plasmodium vivax has cleared Duffy negativity. If Plasmodium vivax is evolving to learn how to infect the Duffy-negative red cell, then a large continent of people suddenly ____5____ a new form of malaria.”
【视听版科学小组荣誉出品】
“Plasmodium vivax, the world’s most common malaria parasite, now infects people previously considered to be ____1____.”
Peter Zimmerman from Case Western Reserve University school of medicine spoke at the AAAS meeting in Washington on February 19th.
“So, red blood cells of most African people do not ____2____ the Duffy blood-group protein. Now, the Duffy blood-group protein is ____3____ for Plasmodium vivax to get into the red cell. Duffy-negative Africans have been considered to be resistant to Plasmodium vivax.”
Zimmerman studied Malagasy populations on Madagascar. He found that 10 percent of Duffy-negative subjects were in fact ____4____ Plasmodium vivax.
“So we’ve shown that Plasmodium vivax has cleared Duffy negativity. If Plasmodium vivax is evolving to learn how to infect the Duffy-negative red cell, then a large continent of people suddenly ____5____ a new form of malaria.”
【视听版科学小组荣誉出品】
resistant
express
essentially necessary
infected with
becomes susceptible to
疟疾的最新研究进展：
“间日疟原虫是世上最常见的疟疾寄生虫，现在，这种寄生虫也会感染那些之前被认为抗疟疾病的人。” 在2月19日，来自凯斯西储大学医学院的皮特•齐默曼于华盛顿在美国科学发展协会会议中发表讲话。“因此，大部分非洲人的红细胞不会表达达菲蛋白。现在间日疟原虫必须依靠达菲蛋白进入红细胞。不表达达菲蛋白的非洲人曾被认为是不会感染间日疟原虫的。” 齐默曼研究了马达加斯加上土地上的马达加斯加人。他发现10%没有达菲蛋白的人实际上都被间日疟原虫感染了。因此我们证明了不表达达菲蛋白的人已经不再能抵抗间日疟原虫了。如果间日疟原虫进化到可以影响不表达达菲蛋白的红细胞，那么突然之间，这片大陆上就会有很多人可能患上了一种新的虐疾病。