中文字幕欧美一区二区_久久精品国产亚洲77777_91在线?清?看_狠狠干妹子_人妻夜夜爽爽88888视频_97综合网

食品伙伴網服務號
 
 
當前位置: 首頁 » 專業英語 » 英語短文 » 正文

研究:放臭屁能控制血壓

放大字體  縮小字體 發布日期:2008-10-29
核心提示:美國科學家最新的一項研究發現,老鼠體內排出的帶有臭雞蛋氣味的難聞氣體能夠控制它們體內的血壓。這種令人生厭的氣體叫做硫化氫。細菌在人的結腸內也會排出這種氣體并最終以人放屁的形式將其排出體外,該過程與老鼠極為相似。由此,研究人員就可以嘗試研究出一種能夠


    美國科學家最新的一項研究發現,老鼠體內排出的帶有臭雞蛋氣味的難聞氣體能夠控制它們體內的血壓。這種令人生厭的氣體叫做硫化氫。細菌在人的結腸內也會排出這種氣體并最終以人放屁的形式將其排出體外,該過程與老鼠極為相似。由此,研究人員就可以嘗試研究出一種能夠促進硫化氫形成的治療方法來替代現有的治療高血壓的方法。

    A smelly rotten-egg gas in farts controls blood pressure in mice, a new study finds.

    A smelly rotten-egg gas in farts controls blood pressure in mice, a new study finds.

    The unpleasant aroma of the gas, called hydrogen sulfide (H2S), can be a little too familiar, as it is expelled by bacteria living in the human colon and eventually makes its way, well, out.

    The new research found that cells lining mice's blood vessels naturally make the gas and this action can help keep the rodents' blood pressure low by relaxing the blood vessels to prevent hypertension (high blood pressure). This gas is "no doubt" produced in cells lining human blood vessels too, the researchers said.

    "Now that we know hydrogen sulfide's role in regulating blood pressure, it may be possible to design drug therapies that enhance its formation as an alternative to the current methods of treatment for hypertension," said Johns Hopkins neuroscientist Solomon H. Snyder, M.D., a co-author of the study detailed in the Oct. 24th issue of the journal Science.

    Snyder and his colleagues compared normal mice to mice that were missing a gene for an enzyme known as CSE, long suspected as being responsible for making hydrogen sulfide. As they measured hydrogen sulfide levels taken from tissues of the CSE-deficient mice, the scientists found that the gas was depleted in the cardiovascular systems of the altered mice. By contrast, normal mice had higher levels of the gas, thereby showing that hydrogen sulfide is naturally made by mammalian tissues using CSE.

    Next, the mice were subjected to higher blood pressures comparable to serious hypertension in humans. Scientists had them respond to a chemical called methacholine that relaxes normal blood vessels. The blood vessels of the CSE-lacking mice hardly relaxed, indicating that hydrogen sulfide is a huge contender for regulating blood pressure.

    Hydrogen sulfide is the most recently discovered member of a family of gasotransmitters, small molecules inside our bodies with important physiological functions.

    This study is the first to reveal that the CSE enzyme that triggers hydrogen sulfide is activated itself in the same way as other enzymes when they trigger their respective gasotransmitter, such as a nitric oxide-forming enzyme that also regulates blood pressure, Dr. Snyder said.

    Because gasotransmitters are common in mammals all over the evolutionary tree, these findings on the importance of hydrogen sulfide are thought to have broad applications to human diseases, such as diabetes and neurodegenerative diseases.

    The research was supported by grants from the U.S. Public Health Service and the Canadian Institutes of Health Research as well as a Research Scientist Award.


更多翻譯詳細信息請點擊:http://www.trans1.cn
 
關鍵詞: 放臭屁 血壓
[ 網刊訂閱 ]  [ 專業英語搜索 ]  [ ]  [ 告訴好友 ]  [ 打印本文 ]  [ 關閉窗口 ] [ 返回頂部 ]
分享:

 

 
推薦圖文
推薦專業英語
點擊排行
 
 
Processed in 5.548 second(s), 969 queries, Memory 3.81 M
主站蜘蛛池模板: 亚洲欧美第一成人网站7777 | 91区视频| 免费不卡欧美自拍视频 | 亚洲视频色 | 高清国产午夜精品久久久久久 | 国产免费国产 | 日韩精品中文有码 | 国产日产欧产美韩毛毛片 | 性猛交xxxxx按摩欧美 | 日韩精品天堂 | 我要看免费的黄色片 | 日韩网站视频 | 欧美视频精品全部免费观看 | 国产精品久久久久9999鸭 | 欧美视频网 | 国产中文字幕一区二区 | 超碰69| av网址免费在线观看 | 99久久久无码国产精品古装 | 波多野结衣伦理在线观看 | 看黄A大片爽爽影院免费无码 | 国产欧美日韩精品一区二区三区 | 免费精品99久久国产综合精品 | 丰满人妻翻云覆雨呻吟视频 | 日本老妇性视频 | 国产真实一区二区三区 | 波多老师无码av中字专区 | 91精品久久久久久久久久不卡 | 99在线精品一区二区三区 | 免费看18禁止观看黄网站 | gogogo高清在线观看中文 | 亚洲中文字幕无码久久 | 91久视频| 97人妻人人做人碰人人添 | 日本1区 | 欧美日韩无 | 在线观看黄免费 | 日韩视频一区在线观看 | 无码少妇一区二区三区 | 人人射人人草 | 日韩欧美亚洲国产精品字幕久久久 |