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【双语进展】甜菜汁对大脑有益
2010-11-17 09:38 丁香园 albmu  发布范围:公开
Beet Juice Good for Brain

甜菜汁对大脑有益

Drinking Beet Juice Increases Blood Flow to Brain and May Fight Dementia
By Bill Hendrick
WebMD Health NewsReviewed by Laura J. Martin, MDNov. 3, 2010 -- Drinking beet juice increases blood flow to the brain in older people, a finding that suggests the dark red vegetable may fight the progression of dementia, a new study shows.

喝甜菜汁增加脑血流,并且可能预防痴呆
Bill Hendrick报道
2010年11月3日健康新闻(由Laura J. Martin医学博士审阅)---一项新研究显示一个提示甜菜可能预防痴呆发展的发现,喝甜菜汁增加老年人大脑血流。

Beet roots contain high concentrations of nitrates, which are converted into nitrites by bacteria in the mouth. And nitrites help open blood vessels in the body, increasing blood flow and oxygen to places lacking in oxygen.

甜菜根包含高浓度的硝酸盐,它可被口腔内细菌转化为亚硝酸盐。亚硝酸盐帮助扩张身体内的血管,增加缺氧部位的血流和氧。

Previous studies have shown that nitrites — also found in high concentrations in celery, cabbage, and other leafy, green vegetables like spinach — widen blood vessels, but researchers say this was the first to find that nitrites also increase blood flow to the brain.

以前的研究们已经显示亚硝酸盐(也发现芹菜、卷心菜和其它多叶、绿色的蔬菜像菠菜中有高浓度的)扩张血管,但是研究人员们说这是首次发现亚硝酸盐也增加大脑血流。

Blood Flow to the Brain
“There have been several very high-profile studies showing that drinking beet juice can lower blood pressure, but we wanted to show that drinking beet juice also increases perfusion, or blood flow, to the brain,” Daniel Kim-Shapiro, PhD, director of the Translational Science Center at Wake Forest University, says in a news release.

大脑的血流
“已经有几个引人注目的研究们显示,喝甜菜汁能降低血压,但是我们打算显示喝甜菜汁也增加大脑的灌注或血流,” 维克森林大学应用科学中心主任Daniel Kim-Shapiro博士在一个新闻稿中说。

“There are areas in the brain that become poorly perfused as you age, and that’s believed to be associated with dementia and poor cognition.”

“随着你的年龄增加,大脑中有的区域变得低灌注,并且人们相信这与痴呆和低的认知有关。”

Researchers from the Translational Science Center looked at how dietary nitrates affected 14 adults aged 70 and older over a four-day period. On day one, subjects reported to a laboratory after a 10-hour fast, completed a health status report, and had either a high- or low-nitrate breakfast. The high-nitrate breakfast included 16 ounces of beet juice.

应用科学中心的研究人员们观察饮食中硝酸盐如何在4天的周期内影响14名年龄70岁以上的成年人。在第一天,受试者在10小时禁食期后到一个实验室报到,完成一个健康现状报告,并且吃一个高或低亚硝酸盐早餐。高亚硝酸盐早餐包含16盎司甜菜汁。

Then they were sent home with lunch, dinner, and snacks that conformed to their assigned diets.

然后他们被送回家吃与他们被指定饮食相一致的午餐、晚餐和点心。

On the second day, after another 10-hour fast, the participants returned to the lab and ate their assigned breakfasts. An hour later, an MRI scan recorded brain flow in each person’s brain. And blood tests before and after breakfast confirmed nitrite levels in the body.

在第二天,在另一次10小时禁食期后,参加者返回实验室并且吃他们被指定的早餐。1小时后,MRI扫描记录每个人大脑的流量。并且早餐前后进行血液测验确定身体内亚硝酸盐水平。

On the third and fourth days, researchers switched diets and repeated the process for each person.

在第3和4天,研究人员们改变饮食并重复每个人的过程。

MRI scans showed that after eating a high-nitrate diet, the older adults had increased blood flow to the white matter of the frontal lobes, which are the areas of the brain most commonly associated with the degeneration that leads to dementia and other cognitive conditions.

MRI扫描显示吃高硝酸盐饮食后,年长的成年任已经增加额叶白质血流,它是与导致痴呆和其它认知疾病的退化最常相关的大脑区域。

Diets Rich in Fruits and Vegetables
“I think these results are consistent and encouraging -- that good diet consisting of a lot of fruits and vegetables can contribute to overall good health,” says senior investigator Gary Miller, PhD, an associate professor in Wake Forest’s Department of Health and Exercise Science.

富含水果和蔬菜的饮食
“我认为这些结果是相符的和振奋人心的---包含大量水果和蔬菜的好饮食可能是对整体好的健康有益的,”维克森林大学健康与运动科学系副教授高级调查员Gary Miller博士说。

Because beet juice doesn’t exactly taste like a sugary soda, Wake Forest has worked with a company to create a new beet juice beverage that is tastier than plain beet juice, and a news release says the university is investigating ways to market this beverage.

因为甜菜汁并不是尝起来像含糖的汽水,维克森林大学已经与一个公司一起工作以生产一种比普通甜菜汁好吃的新甜菜汁饮料,并且一个新闻稿说这个大学正在调查市场推广这种饮料的方法。

The researchers say that their study, and future ones like it, may “lead to interventions that could improve cognitive and physical functional health in older adults.”

研究人员们说他们的研究和像它一样未来的研究们可能“导致能够改善年长成年人认知和身体功能性健康的介入。”

The findings are published online in Nitric Oxide: Biology and Chemistry, the peer-reviewed journal of the Nitric Oxide Society.

这些发现出版在《一氧化氮:生物化学》网络版上:一氧化氮社会的专家审查刊物。
 
 
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