評論
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Another study done in 2004 found similar results.
2004年做的另一項研究得到了相似的結(jié)果
Researchers added genistein and daidzein to
研究者們進行細(xì)胞培養(yǎng)時
estrogen-sensitive breast cancer cells in cell culture
在雌激素依賴性癌細(xì)胞中加染料木素和豆苷
and found that the products of the breakdown of
發(fā)現(xiàn)異黃酮分解后的產(chǎn)物
isoflavones caused damage to the DNA of the mammary
對乳腺細(xì)胞的基因造成了傷害
cells and thus initiated tumor growth and progression.
因而導(dǎo)致了腫瘤的生長發(fā)展
As with the previous study research done in cell
和之前的研究一樣
cultures and animal models provide
用細(xì)胞培養(yǎng)和動物標(biāo)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.
而對人體的研究更加可信
Another important note about this study is the
這個研究的另一個重要的地方
difference in isoflavones used.
是使用的異黃酮的不同
In this case the isoflavones were in a purified form
這項研究所使用的異黃酮并不是
in which they did not have to be broken down
通過從其他成分中降解或者分離得到
or separated from other components.
而是事先經(jīng)過了提純
But in many human studies the isoflavones are
但在許多人體研究中
used within a soy product and thus need to be
異黃酮是在放在豆制品內(nèi)使用
separated from other nutrients before they
因而在為身體所用之前它需要
can be used by the body.
與其他營養(yǎng)成分分離
Despite these concerns these studies do provide a great
暫不考慮這些因素 這些研究確實為
base for increasing research in this area.
這一領(lǐng)域的深入研究打下了堅實的基礎(chǔ)
But show that there is a disconnect between information
但是我們也能看到 研究人員所提供的
research can provide from using isolated isoflavones
信息之間出現(xiàn)了斷層 無法將在細(xì)胞培養(yǎng)中
in a cell culture to that of what humans would consume
單獨使用異黃酮和人類僅僅通過食用
from simply eating soy products.
豆制品而獲得異黃酮聯(lián)系起來
The reason it is so difficult to determine a conclusive
得出總結(jié)性的結(jié)論和有關(guān)大豆攝入量
result and recommendation concerning soy consumption
及乳腺癌患病幾率的建議
and risk of breast cancer is that the findings
是如此困難是因為
of different studies vary based on the ethnicity
不同研究的結(jié)果因參與者的
and age of participants as well as the status
民族和年齡 以及癌癥發(fā)展的狀況
of cancer in the participants.
不同而不同
Other aspects include differences in dosage of soy
其他因素還包括大豆異黃酮用量的不同
isoflavones as well as the form of isoflavones used.
以及所使用的異黃酮的形態(tài)
As mentioned on the previous slide purified isoflavones
如上一張PPT所說 經(jīng)過提純的異黃酮
and isoflavones found in soy products will
和豆制品里的異黃酮對實驗結(jié)果
affect results differently.
會產(chǎn)生不同的影響
Different soy products also have differing contents
不同的豆制品也會因處理方法不同
of isoflavones due to variances in processing.
而含有不同成分的異黃酮
All of these factors must be taking into account
在閱讀分析期刊文章時
when reading and analyzing journal articles and
所有這些因素都必須考慮進去
they are also factors that can be left out when another
但是同時 如果在網(wǎng)站討論或者文獻中
site discusses and article they used as a reference.
被作為參照 這些因素也可以被忽略
For this reason it is very important to always read
因為這個原因 閱讀原始的研究很重要
the original research in order to determine if a website
這樣才能確定一個網(wǎng)站是否
accurately explained the significance of a data set
準(zhǔn)確地解釋了一組數(shù)據(jù)的重要性
or if information was taken out of context.
或者是否斷章取義了
After reviewing this portion of the presentation
在回顧了這段課堂演示后
what do you think?
你怎么想
Would you include or increase soy in your diet?
你會在飲食中食用大豆或增加大豆的食用嗎
What are your reasons?
原因是什么呢
There really is no right answer to the question
實際上對于大豆是好還是壞這個問題
of whether soy is good or bad.
沒有一個正確的答案
Unfortunately more research needs to be done
人們還需要做更多的研究
before a conclusive argument is made in support
才能得出一個大量食用大豆
of or against high consumption of soy products.
是好還是壞的總結(jié)性結(jié)論
