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Another study done in 2004 found similar results.
2004年做的另一项研究得到了相似的结果
Researchers added genistein and daidzein to
研究者们进行细胞培养时
estrogen-sensitive breast cancer cells in cell culture
在雌激素依赖性癌细胞中加染料木素和豆苷
and found that the products of the breakdown of
发现异黄酮分解后的产物
isoflavones caused damage to the DNA of the mammary
对乳腺细胞的基因造成了伤害
cells and thus initiated tumor growth and progression.
因而导致了肿瘤的生长发展
As with the previous study research done in cell
和之前的研究一样
cultures and animal models provide
用细胞培养和动物标本做的研究
a limited amount of information
提供的信息量有限
whereas studies in humans are more credible.
而对人体的研究更加可信
Another important note about this study is the
这个研究的另一个重要的地方
difference in isoflavones used.
是使用的异黄酮的不同
In this case the isoflavones were in a purified form
这项研究所使用的异黄酮并不是
in which they did not have to be broken down
通过从其他成分中降解或者分离得到
or separated from other components.
而是事先经过了提纯
But in many human studies the isoflavones are
但在许多人体研究中
used within a soy product and thus need to be
异黄酮是在放在豆制品内使用
separated from other nutrients before they
因而在为身体所用之前它需要
can be used by the body.
与其他营养成分分离
Despite these concerns these studies do provide a great
暂不考虑这些因素 这些研究确实为
base for increasing research in this area.
这一领域的深入研究打下了坚实的基础
But show that there is a disconnect between information
但是我们也能看到 研究人员所提供的
research can provide from using isolated isoflavones
信息之间出现了断层 无法将在细胞培养中
in a cell culture to that of what humans would consume
单独使用异黄酮和人类仅仅通过食用
from simply eating soy products.
豆制品而获得异黄酮联系起来
The reason it is so difficult to determine a conclusive
得出总结性的结论和有关大豆摄入量
result and recommendation concerning soy consumption
及乳腺癌患病几率的建议
and risk of breast cancer is that the findings
是如此困难是因为
of different studies vary based on the ethnicity
不同研究的结果因参与者的
and age of participants as well as the status
民族和年龄 以及癌症发展的状况
of cancer in the participants.
不同而不同
Other aspects include differences in dosage of soy
其他因素还包括大豆异黄酮用量的不同
isoflavones as well as the form of isoflavones used.
以及所使用的异黄酮的形态
As mentioned on the previous slide purified isoflavones
如上一张PPT所说 经过提纯的异黄酮
and isoflavones found in soy products will
和豆制品里的异黄酮对实验结果
affect results differently.
会产生不同的影响
Different soy products also have differing contents
不同的豆制品也会因处理方法不同
of isoflavones due to variances in processing.
而含有不同成分的异黄酮
All of these factors must be taking into account
在阅读分析期刊文章时
when reading and analyzing journal articles and
所有这些因素都必须考虑进去
they are also factors that can be left out when another
但是同时 如果在网站讨论或者文献中
site discusses and article they used as a reference.
被作为参照 这些因素也可以被忽略
For this reason it is very important to always read
因为这个原因 阅读原始的研究很重要
the original research in order to determine if a website
这样才能确定一个网站是否
accurately explained the significance of a data set
准确地解释了一组数据的重要性
or if information was taken out of context.
或者是否断章取义了
After reviewing this portion of the presentation
在回顾了这段课堂演示后
what do you think?
你怎么想
Would you include or increase soy in your diet?
你会在饮食中食用大豆或增加大豆的食用吗
What are your reasons?
原因是什么呢
There really is no right answer to the question
实际上对于大豆是好还是坏这个问题
of whether soy is good or bad.
没有一个正确的答案
Unfortunately more research needs to be done
人们还需要做更多的研究
before a conclusive argument is made in support
才能得出一个大量食用大豆
of or against high consumption of soy products.
是好还是坏的总结性结论
