孕妇宜多食咸肉、蛋类-凯发k8官网

孕妇宜多食咸肉、蛋类
文章来源:未知 文章作者:meng 发布时间:2010-01-05 01:32 字体: [ ] 
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if you're pregnant and looking for an excuse to eat bacon咸肉,腌肉 and eggs, now you've got one: a new research study published in the january 2010 print issue of the faseb journal (http://www.fasebj.org) by a team of university of north carolina researchers shows that choline维他命b复合体之一,胆碱 plays a critical role in 1 fetal胎儿的 brains develop regions associated with memory. choline is found in meats, including pork, as well as chicken eggs. "our study in mice indicates that the diet of a pregnant mother, especially choline in that diet, can change the epigenetic外成的,后生的 switches that control brain development in the fetus胎儿" said steven zeisel, the senior scientist involved in the work and a senior member of the faseb journal's editorial board. "understanding more about how diet modifies our 3 could be very important for assuring 4 development."

zeisel and colleagues made this discovery by feeding two groups of pregnant mice different diets during the window of time when a 2 develops its hippocampus海马, that part of the brain responsible for memory. the first group received no choline while the other received choline (1.1g/kg). the group that received no choline had changes in epigenetic marks on the proteins (histones) that wrap genes in cells responsible for the creation of new brain cells (neural 5 cells). then, by 6 these cells from the developing brains and growing them in cell culture, the scientists 7 the expression of genes for two proteins that regulate neuronal神经元的 cell creation and maturation. these two proteins (g9a and calb1) were changed in the brains of 8 whose mothers were fed low choline diets.

"we may never be able to call bacon a health food with a straight face没有笑容,板着脸, but the emerging field of epigenetics is already making us rethink those things that we consider healthful and unhealthful," said gerald weissmann, md, editor-in-chief of the faseb journal. "this is yet another example showing that good prenatal nutrition is vitally important throughout a child's entire lifetime."

the agricultural research service's 9 data laboratory makes a database available to the public in an effort to试图,企图 help them get healthful amounts of choline in their diets. the database provides researchers and consumers with the means to estimate daily choline intake摄取量 from consumption of more than 400 different foods and can be accessed at http://www.ars.usda.gov/main/site_main.htm?modecode=12-35-45-00. the agricultural research service says that "experts suggest that an adequate choline 10 is 425 milligrams a day for women and 550 milligrams a day for men. top sources of choline include meat, nuts, and eggs."



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1 2rgzdc     
n.食物的一份&adj.帮助人的,辅助的
参考例句:
  • the poor children regularly pony up for a second helping of my hamburger. 那些可怜的孩子们总是要求我把我的汉堡包再给他们一份。
  • by doing this, they may at times be helping to restore competition. 这样一来, 他在某些时候,有助于竞争的加强。
2 ekhx3     
n.胎,胎儿
参考例句:
  • in the fetus,blood cells are formed in different sites at different ages.胎儿的血细胞在不同时期生成在不同的部位。
  • no one knows why a fetus is not automatically rejected by the mother's immune system. 没有人知道为什么母亲的免疫系统不会自动排斥胎儿。
3 01914f8eac35d7e14afa065217edd8c0     
n.基因( gene的名词复数 )
参考例句:
  • you have good genes from your parents, so you should live a long time. 你从父母那儿获得优良的基因,所以能够活得很长。 来自《简明英汉词典》
  • differences will help to reveal the functions of the genes. 它们间的差异将会帮助我们揭开基因多种功能。 来自英汉非文学 - 生命科学 - 生物技术的世纪
4 zmdzhm     
adj.最适宜的;最理想的;最令人满意的
参考例句:
  • what is the optimal mix of private and public property rights in natural resources?私人和国家的自然资源产权的最适宜的组合是什么?
  • optimal path planning is a key link for the sailing contest.帆船最优行驶路径规划是帆船比赛取胜的关键环节。
5 2iiyd     
n.祖先,先驱
参考例句:
  • he was also a progenitor of seven presidents of nicaragua.他也是尼加拉瓜7任总统的祖先。
  • schoenberg was a progenitor of modern music.勋伯格是一位现代音乐的先驱。
6 44778bf8913bd1ed228a8571456b945b     
adj.孤立的,绝缘的v.使隔离( isolate的现在分词 );将…剔出(以便看清和单独处理);使(某物质、细胞等)分离;使离析
参考例句:
  • colour filters are not very effective in isolating narrow spectral bands. 一些滤色片不能很有效地分离狭窄的光谱带。 来自辞典例句
  • this became known as the streak method for isolating bacteria. 这个方法以后就称为分离细菌的划线法。 来自辞典例句
7 duszmp     
adj.坚定的;有决心的
参考例句:
  • i have determined on going to tibet after graduation.我已决定毕业后去西藏。
  • he determined to view the rooms behind the office.他决定查看一下办公室后面的房间。
8 eae25b106f4ed68558631a5bf44c9293     
n.胎,胎儿( fetus的名词复数 )
参考例句:
  • dna was extracted from fetuses at mid-gestation, about 10 days past conception. dna从受孕大约10天后的中期妊娠胚胎中提取。 来自互联网
  • brucellosis is a disease that causes fetuses to abort in cattle. 普鲁士菌病是一种可以导致牲畜胎儿夭折的疾病。 来自互联网
9 3vpye     
adj.营养的,滋养的;n.营养物,营养品
参考例句:
  • magnesium is the nutrient element in plant growth.镁是植物生长的营养要素。
  • the roots transmit moisture and nutrient to the trunk and branches.根将水分和养料输送到干和枝。
10 44cyq     
n.吸入,纳入;进气口,入口
参考例句:
  • reduce your salt intake.减少盐的摄入量。
  • there was a horrified intake of breath from every child.所有的孩子都害怕地倒抽了一口凉气。
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