[讨论]美国在中药上的最大发现!

cndoc

且看阿美利加国的研究者是怎么说的 (刚刚在网上看到，气愤！他们不懂，还硬说中药是错的！幸好Adriane Fugh-Berman好象懂一点，给我们说话。大家记得去扁Janice Kelly)：
Chinese Herb Leads to Kidney Failure, Cancer
By Janice Kelly
WebMD Medical News  

   June 7, 2000 -- A mislabeled Chinese herb imported into Belgium has caused kidney failure and cancers in people who took a prescription weight-loss mixture containing the herb, a new study reports.
All of the patients were treated at a single diet clinic, and all cases occurred after the clinic added Chinese herbs to its diet formula, according to the study published in The New England Journal of Medicine. The dangerous herb, Aristolochia fangchi, is available for purchase in the U.S., one expert writes in an editorial accompanying the study.
Study author Joelle L. Nortier, MD, PhD, tells WebMD that the diet capsules were meant to include the herb Stephania tetrandra (called fangji in Chinese) but instead were made with Aristolochia fangchi (fangchi in Chinese). The mistake is thought to be due to the similarity of the two Chinese drug names.
"According to the Belgian Ministry of Health, about 10,000 subjects are thought to have ingested Chinese herbs in our country from 1990 to 1992. At least 70 individuals reached end-stage [kidney] failure requiring dialysis and/or transplantation," Nortier tells WebMD. Nortier studied tissue samples from 39 of these patients and found that 18 also had some form of kidney or bladder cancer. She is in the nephrology department at Erasmus Hospital in Brussels.
The mistake appears to have originated with a wholesaler who imported the so-called Stephania tetrandra (actually Aristolochia fangchi) from Hong Kong into Belgium. "The roots were reduced to powder before being sent to our country in packs. Belgian import agencies received these products vacuum-packed and processed them into small boxes of 6 to 12 grams for use by pharmacists," Nortier says.
Following medical prescriptions, the pharmacists combined the powdered herbs with three Western drugs into capsules for use by patients of the weight-loss clinic. The three Western drugs included two appetite suppressants and a diuretic.
When the cases of kidney failure began to appear, Belgian health authorities traced the capsules back to the pharmacies, analyzed the drugs and herbs the pharmacists had used, and identified the "substitute" herb. This was possible because in Belgium, unlike the U.S., herbal preparations are available only by prescription.
Kidney failure began anywhere from three months to seven years after the patients had stopped taking the weight-loss capsules. By the time of Nortier's report, 43 of the 105 patients studied had complete kidney failure, requiring transplant or dialysis.
In each of the 39 samples of kidney tissue she studied, Nortier found bits of DNA from the Aristolochia fangchi herb attached to the patients' chromosomes. Researchers think the DNA bits may turn on cancer genes or turn off genes that protect against cancer -- or both. The DNA bits were still in place over seven years after the patients stopped taking the weight-loss capsules.
In his editorial accompanying the study, former FDA commissioner David Kessler, MD, writes that he was able to buy the herb in the United States and calls for Congress to enact greater protections against potentially harmful supplements.
Adriane Fugh-Berman, MD, an expert in herbal medicine, says attempts to include Chinese traditional remedies in diet drugs ignore the fact that there are no herbs traditionally used for weight loss in Chinese medicine. "Losing weight has not been a traditional goal in China," says Berman, a consultant with federal agencies on herbs and dietary supplements.
"The herb-drug combination used by these patients is clearly toxic, but this raises a larger issue," Fugh-Berman says. "There are no completely safe, painless weight-loss drugs or herbs. Any herb or drug that speeds up your metabolism can be dangerous. The only safe approach is diet and exercise."

david

米饭吃多了 白水喝多了 也有害 是不是要禁用？？？

小医

diet can be unsafe too!

我说无忌

国内已经进行了此研究，估计2年之内会结题，让我们一起看结果

tcmolive

世界上任何一种植物都是有一定毒性的

兰心

[这个贴子最后由兰心在 2003/04/13 08:19am 第 1 次编辑]

    欢迎cndoc 常来坐坐.
    无论在网络还是现实生活中,不相信中医诋毁中医的大有人在. cndoc 不必动气.
    西方人对中医的认识有限,有很多人不懂,甚至完全排斥中医.对此我们能做的只有两方面,一:加强自身修养,提高自己的专业技术及疗效,让事实说话.
   二:加强宣传,让更多的人了解中医,接受中医.这也是我们办网站的目的所在

岐黄术

不论他西人上文所讲会导致肾衰竭，还是会导致癌症。上文提到的防己是被国际上禁止了，含马兜铃酸的都禁止了。甚至麻黄也被禁止了，据说有人拿它来减肥。从药来讲，药大都有偏性，正常人本来阴阳就已平衡，再用偏性之药，还不把人体平衡搞乱了？《内经》素问生气通天论曰：“阴平阳秘，精神乃治。阴阳离决，精神乃绝。”希望我们医生病人都能合理使用中药；而生产销售中药的过程中，品质也要保障。使用中药的任何一个环节出现问题，都可能损害到我们整体中医。希望不要再出现第二次谈“马”色变！

岐黄术

错用误用中药，就向错用误用西药同样有害。

桂枝汤

中药的输出，不能简单从事，药，本身是利用付作用来治病的，中医对药性，要求不同于西医，热病用了热药，寒症用了寒药，势必要出现严重的付作用，甚至影响生命。如果，中医走在中药之后面，单一出口中药，势必要全军复没。其实，西药的毒性比中药还要大，经常出现一些不可逆转的破坏。