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【bio-news】体外受精新实验可减少多胞胎降生
Montreal Gazette
Published: Monday, March 19, 2007
Researchers at McGill and Yale Universities say they have found a safe way for women to use in-vitro fertilization without running the risk they’ll bring home enough babies to fill a nursery.
McGill chemistry professor David Burns led the team that designed the test, a non-invasive procedure which will allow clinicians to choose only the healthiest, most viable embryos to implant in the womb.
Over the past 25 years, the number of multiple births in North America has skyrocketed, largely as a result of so-called ‘fertility twins,’ triplets and quads born to mothers who conceived with help of assisted reproductive technology.
In the United States, for instance, the number of twin births soared by 42 per cent between 1980 and 1997, while reports of triplets and more was five times higher.
According to statistics compiled by Multiple Births Canada, 60 per cent of triplets, 90 per cent of quads and 99 per cent of quintuplets in Canada are the result of infertility treatments.
Fertility specialists often implant three or more embryos in their patients, knowing that only one-third of procedures normally result in pregnancy. Yet of those that do take, half result in multiple births.
And while most couples are thrilled with their long-awaited bundles of joy, more babies often means more complications, such as low birth weight, premature delivery, and greater risk of infant mortality or complications.
“IVF can be an emotional roller-coaster,” said Dr. Hing-Sang Hum, assistant professor of obstetrics and gynecology at McGill.
“With this breakthrough, it means we may soon be able to implant just one embryo, one that is showing strong signs of viability, while preserving other good embryo candidates for later if needed.”
http://www.canada.com/montrealgazette/news/story.html?id=9856e8a2-233c-4c0a-937a-9a7b434db834&k=78552 本人已认领该文编译，48小时后若未提交译文，请其他战友自由认领. New in-vitro test could lead to fewer multiple births
体外受精新试验可减少多胞胎降生
作者:Montreal Gazette
Published: Monday, March 19, 2007
发表日期：2007年3月19日，周日。
Researchers at McGill and Yale Universities say they have found a safe way for women to use in-vitro fertilization without running the risk they’ll bring home enough babies to fill a nursery.
麦吉尔大学及耶鲁大学的研究人员声称,他们已经找到一种安全的体外受精方法，妇女们再也不用担心带回去的宝宝将幼儿室占满了。
McGill chemistry professor David Burns led the team that designed the test, a non-invasive procedure which will allow clinicians to choose only the healthiest, most viable embryos to implant in the womb.
麦吉尔大学化学系教授David Burns率领的团队设计了这个试验， 它采用的无创方法使得临床医生能够选择最健康、最易于发育的胚胎植入子宫
Over the past 25 years, the number of multiple births in North America has skyrocketed, largely as a result of so-called ‘fertility twins,’ triplets and quads born to mothers who conceived with help of assisted reproductive technology.
在过去的25年里，北美每年诞生的多胞胎数量剧增, 这主要是由于在辅助生殖技术的帮助下所谓的生育双胞胎、三胞胎和四胞胎的母亲的增加。
In the United States, for instance, the number of twin births soared by 42 per cent between 1980 and 1997, while reports of triplets and more was five times higher.
在美国，比如，双胞胎诞生的数量在1980和1997年间增长了42%，同时三胞胎和三胞胎以上的怀孕报道数量增加了5倍。
According to statistics compiled by Multiple Births Canada, 60 per cent of triplets, 90 per cent of quads and 99 per cent of quintuplets in Canada are the result of infertility treatments.
加拿大多胞胎协会（Multiple Births Canada）收集的数据表明：加拿大60%的三胞胎，90%的四胞胎和99%的五胞胎都是治疗不育症的结果。
Fertility specialists often implant three or more embryos in their patients, knowing that only one-third of procedures normally result in pregnancy. Yet of those that do take, half result in multiple births.
由于通常只有三分之一的手术会导致怀孕，专家常常将三个或更多的胚胎植入病人体内。但这样做通常导致半数的妇女怀上多胞胎。
And while most couples are thrilled with their long-awaited bundles of joy, more babies often means more complications, such as low birth weight, premature delivery, and greater risk of infant mortality or complications.
当多数夫妇因之而兴奋时, 然而更多的婴儿经常意味着更多并发症, 譬如低产重, 早产, 和高死亡率和并发症风险。
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作者:admin@医学,生命科学 2011-03-25 05:14
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