家畜身上某致命耐性菌能感染人类-凯发k8官网

家畜身上某致命耐性菌能感染人类
文章来源:未知 文章作者:enread 发布时间:2012-02-22 03:08 字体: [ ] 
(单词翻译:双击或拖选)

a strain of the potentially deadly 1-2 3 known as mrsa has jumped from 4 to humans, according to a new study involving two northern arizona university researchers. paul keim, regents' professor and director of nau's center for microbial genetics and genomics, and lance price, nau 5 member and director of the center for food microbiology and environmental health at the translational genomics research institute, 6 with scientists at 20 institutions around the world on the study recently published in the online journal mbio.

the tgen-led research 7 whole genome sequencing to study 89 genomes from humans and animals -- including turkeys, chickens and pigs -- with samples from 19 countries on four continents.

the research focused on methicillin(甲氧西林) -resistant staphylococcus aureus cc398, also known as pig mrsa or livestock-associated mrsa because it most often infects people with direct exposure to swine or other livestock. it is likely that mrsa cc398 started as an antibiotic-susceptible strain in humans before it jumped to livestock.

after transferring to livestock, mrsa cc398 became resistant to two important 8, tetracycline(四环素) and methicillin, which are used for treating staph infections. the resistance likely is a result of the routine antibiotic use that characterizes modern food-animal production. the animals commonly are given antibiotics to prevent infection and promote growth.

keim, who also serves as director of tgen's pathogenic genomics division, said the study describes evolution in action. "the most powerful force in evolution is selection. and in this case, humans have supplied a strong force through the excessive use of antibiotic drugs in farm animal production. it is that inappropriate use of antibiotics that is now coming back to haunt us."

price, the study's lead author, said the research was "like watching the birth of a superbug -- it is 9 fascinating(迷人的) and disconcerting." he said that while this strain of mrsa was discovered less than a decade ago it appears to be spreading very quickly.

"our findings underscore the potential public health risks of widespread antibiotic use in food animal production," price said. "staph thrives in crowded and unsanitary conditions. add antibiotics to that environment and you're going to create a public health problem."



点击收听单词发音收听单词发音  

1 knjzd     
adj.抗菌的;n.抗生素
参考例句:
  • the doctor said that i should take some antibiotic.医生说我应该服些用抗生素。
  • antibiotic can be used against infection.抗菌素可以用来防止感染。
2 7wvxh     
adj.(to)抵抗的,有抵抗力的
参考例句:
  • many pests are resistant to the insecticide.许多害虫对这种杀虫剂有抵抗力。
  • they imposed their government by force on the resistant population.他们以武力把自己的统治强加在持反抗态度的人民头上。
3 bn7ze     
n.(pl.)bacteria 细菌
参考例句:
  • the bacterium possibly goes in the human body by the mouth.细菌可能通过口进入人体。
  • a bacterium is identified as the cause for his duodenal ulcer.一种细菌被断定为造成他十二指肠溃疡的根源。
4 c0wx1     
n.家畜,牲畜
参考例句:
  • both men and livestock are flourishing.人畜两旺。
  • the heavy rains and flooding killed scores of livestock.暴雨和大水淹死了许多牲口。
5 hhkzk     
n.才能;学院,系;(学院或系的)全体教学人员
参考例句:
  • he has a great faculty for learning foreign languages.他有学习外语的天赋。
  • he has the faculty of saying the right thing at the right time.他有在恰当的时候说恰当的话的才智。
6 c49a4f9c170cb7c268fccb474f5f0d4f     
合作( collaborate的过去式和过去分词 ); 勾结叛国
参考例句:
  • we have collaborated on many projects over the years. 这些年来我们合作搞了许多项目。
  • we have collaborated closely with the university on this project. 我们与大学在这个专案上紧密合作。
7 a24badb66c4d7870fd211f2511461fff     
v.利用,使用( utilize的过去式和过去分词 )
参考例句:
  • in the19th century waterpower was widely utilized to generate electricity. 在19世纪人们大规模使用水力来发电。 来自《简明英汉词典》
  • the empty building can be utilized for city storage. 可以利用那栋空建筑物作城市的仓库。 来自《简明英汉词典》
8 lzgzqt     
n.(用作复数)抗生素;(用作单数)抗生物质的研究;抗生素,抗菌素( antibiotic的名词复数 )
参考例句:
  • the discovery of antibiotics in the 20th century 20世纪抗生素的发现
  • the doctor gave me a prescription for antibiotics. 医生给我开了抗生素。
9 4ibz1o     
adv.同时发生地,同时进行地
参考例句:
  • the radar beam can track a number of targets almost simultaneously.雷达波几乎可以同时追着多个目标。
  • the windows allow a computer user to execute multiple programs simultaneously.windows允许计算机用户同时运行多个程序。
tag标签: animals humans
发表评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:点击我更换图片
最新评论
网站地图