首页
登录
职称英语
It’s often said that plants hidden in the tangle of the Amazonian rain fores
It’s often said that plants hidden in the tangle of the Amazonian rain fores
游客
2024-05-07
39
管理
问题
It’s often said that plants hidden in the tangle of the Amazonian rain forest may harbor an undiscovered cancer cure. John Richard Stepp thinks the same can be said for the world’s weeds.
In a study published last year, Stepp, a professor at the University of Florida in Gainesville, looked at the ingredients of common drugs sold at local pharmacies. Of the 101 primarily plant-based health remedies he examined, Stepp estimated that the main ingredient in about a third of the drags was a weed.
"Those are Fairly conservative numbers too," he added. "It is actually more than a third. We cut quite a few off the list, because they weren’t quite weedy enough, in my view."
To be "weedy enough" to meet Stepp’s criteria, plants had to be fast-growing and soft-tissued—unlike trees, for example, which are slow-growing and have woody tissues. Stepp also limited his definition of weeds to plants that thrive in disturbed areas, like farms or clearings, without being deliberately planted.
Stepp said his tally of common weed-based drags was ten times higher than expected. There are about 8,000 weeds known to science. That figure comprises only about 3 percent of the world’s 250,000 described plants.
Phyllis Coley is a biologist at the University of Utah who conducts drug-discovery research in the Panamanian tropical rain forests. She said Stepp’s finding is "provocative."
Coley noted that weedy plants have long been a source of traditional medicines. A key question, she said, is, Why?
"Perhaps this is because weeds were shown to work better," she said. "But I would also suggest that weedy plants would be much more readily available, as they grow in association with human disturbance and are therefore more likely to be experimented with and developed into medicines."
Meanwhile Stepp said his 2004 study results suggest that, in addition to exploring the rain forest for medicinal plants, it makes sense to look at the 8,000 or so weeds that grow closer to home.
The anthropologist doesn’t think drag companies share that view. "The difference between wanting to find new medicines and wanting to find new medicines to make a profit is a very wide gulf," he said.
Regardless of whether new drugs are developed from weeds, Stepp said weed research could lead governments to respect and promote traditional medicinal practices, especially in parts of the world with limited access to modem health care facilities. [br] Why wouldn’t drug companies be interested in weedy plants?
选项
A、They consider weeds to be undesirable or troublesome plant.
B、They wouldn’t like to develop traditional medicines.
C、They wouldn’t believe in the medical effects of weedy plants.
D、They wouldn’t be satisfied with the financial returns of developing news drugs from weeds.
答案
D
解析
见文章倒数第2段,对医药公司来说,开发新药跟开发利润丰厚的新药相差悬殊。
转载请注明原文地址:https://tihaiku.com/zcyy/3587419.html
相关试题推荐
It’softensaidthatplantshiddeninthetangleoftheAmazonianrainfores
It’softensaidthatplantshiddeninthetangleoftheAmazonianrainfores
It’softensaidthatplantshiddeninthetangleoftheAmazonianrainfores
It’softensaidthatplantshiddeninthetangleoftheAmazonianrainfores
FoodInflationKeptHiddeninTinierBagsChipsaredisappea
FoodInflationKeptHiddeninTinierBagsChipsaredisappea
FoodInflationKeptHiddeninTinierBagsChipsaredisappea
FoodInflationKeptHiddeninTinierBagsChipsaredisappea
Wetendtothinkofmemoryasuniquetoanimals.Butitisn’t.Plantsalsoh
Wetendtothinkofmemoryasuniquetoanimals.Butitisn’t.Plantsalsoh
随机试题
Populationageingandtheresultingpressuresonexistingpensionsystemsc
在企业人力资源规划的过程中,劳动关系计划追求的目标是( )。A.确定后备人员数
对压力容器进行液压试验时,试验温度(容器器壁金属温度)应当比容器器壁金属元延性转
口服探亲避孕药的适应证是A.不受经期限制,用于两地分居的夫妇探亲时服用 B.无
目前,办理债券结算业务的系统是( )。A.深圳清算所客户终端系统 B.中债综
中医的"瘿"相当于西医的疾病是()A.颈部肿瘤 B.颈部淋巴结肿大 C
下列关于可持续发展的描述,不确切的是( )。A.可持续发展是中国未来发展的自身
甲公司是一家经营出口的外贸企业,为了应对国内外市场的风险,与乙银行签订了一份协议
(2017年真题)下列有关实质性分析程序的适用性的说法中,错误的是( )。A.
根据《环境影响评价技术导则大气导则》,以下不属于第一阶段的工作是()。A.
最新回复
(
0
)