胎儿的性别可影响到母亲的孕期心理压力
文章来源:未知 文章作者:meng 发布时间:2010-04-30 03:14 字体: [ ]  进入论坛
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University of Adelaide research is showing that the sex of the baby determines the way it responds to stressors during pregnancy1 and its ability to survive pregnancy complications. Male and female babies during pregnancy show different growth and development patterns following stressors during pregnancy such as disease, cigarette use or psychological stress.

The research is being carried out by the Robinson Institute's Pregnancy and Development Group, based at the Lyell McEwin Hospital and led by Associate Professor Vicki Clifton.

"What we have found is that male and female babies will respond to a stress during pregnancy by adjusting their growth patterns differently," said Associate Professor Clifton.

"The male, when mum is stressed, pretends it's not happening and keeps growing, so he can be as big as he possibly can be. The female, in response to mum's stress, will reduce her growth rate a little bit; not too much so she becomes growth restricted, but just dropping a bit below average.

"When there is another complication in the pregnancy – either a different stress or the same one again - the female will continue to grow on that same pathway and do okay but the male baby doesn't do so well and is at greater risk of pre-term delivery(分娩) , stopping growing or dying in the uterus(子宫) ."

Associate Professor Clifton said this sex-specific growth response had been observed in pregnancies2 complicated by asthma3(哮喘) , pre-eclampsia(惊厥) and cigarette use but was also likely to occur in other stressful events during pregnancy such as psychological stress.

She said this sex-specific growth pattern was a result of changes in placental(胎盘的) function caused by the stress hormone4 cortisol(皮质醇) .

In female babies, increased cortisol produces changes to the placental function which lead to the reduction in growth, but the increased cortisol levels in a mother carrying a male baby doesn't produce the same changes in placental function.

Associate Professor Clifton said this research could lead to sex-specific therapies in pre-term pregnancies and premature5 newborns. It was also important in helping6 obstetricians more accurately7 interpret growth and development of the fetus8(胎儿) in at-risk pregnancies.

"We are looking at what events during pregnancy cause changes in how the baby grows, what's behind this and ways in which we can improve the outcomes for pregnant women and their babies," she said.



点击收听单词发音收听单词发音  

1 pregnancy lPwxP     
n.怀孕,怀孕期
参考例句:
  • Early pregnancy is often accompanied by nausea.怀孕早期常有恶心的现象。
  • Smoking during pregnancy increases the risk of miscarriage.怀孕期吸烟会增加流产的危险。
2 pregnancies 2fedeb45162c233ee9e28d81888a2d2c     
怀孕,妊娠( pregnancy的名词复数 )
参考例句:
  • Since the wartime population needed replenishment, pregnancies were a good sign. 最后一桩倒不失为好现象,战时人口正该补充。
  • She's had three pregnancies in four years. 她在四年中怀孕叁次。
3 asthma WvezQ     
n.气喘病,哮喘病
参考例句:
  • I think he's having an asthma attack.我想他现在是哮喘病发作了。
  • Its presence in allergic asthma is well known.它在过敏性气喘中的存在是大家很熟悉的。
4 hormone uyky3     
n.荷尔蒙,激素,内分泌
参考例句:
  • Hormone implants are used as growth boosters.激素植入物被用作生长辅助剂。
  • This hormone interacts closely with other hormones in the body.这种荷尔蒙与体內其他荷尔蒙紧密地相互作用。
5 premature FPfxV     
adj.比预期时间早的;不成熟的,仓促的
参考例句:
  • It is yet premature to predict the possible outcome of the dialogue.预言这次对话可能有什么结果为时尚早。
  • The premature baby is doing well.那个早产的婴儿很健康。
6 helping 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。
7 accurately oJHyf     
adv.准确地,精确地
参考例句:
  • It is hard to hit the ball accurately.准确地击中球很难。
  • Now scientists can forecast the weather accurately.现在科学家们能准确地预报天气。
8 fetus 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。
TAG标签: pregnancy baby sex
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