Three generations " test tube baby " Talk in pros and cons

Three generations " test tube baby " Talk in pros and cons
Gentle: The stone is replied with the popularization which bears knowledge, " test tube baby " Have already been known very well by people. However, readers might not know, " test tube baby " who started in the seventies of the 20th century ,Have already derived three generations' different technology nowadays. The method is different The first generation " The test tube baby " Correct call should inseminate outside the body and embryo transfer, " test tube baby " Just commonly called as. In fact, embryo and baby do not train out in the test tube, but foster ovum and sperm for two days in the glass ware respectively first, then let the ovum fertilized and wait for the embryonated egg to be split into the early embryo with 4- 8 cells, and then move and continue growing in the uterus planted into people until giving a birth. On clinic, the 1st generation of " test tube baby " Employing it most, already hundreds of thousands of " test tube babies " have emerged in the whole world at present . First " The test tube baby " Borned in 1978, revealing and exchanging silks? Brown, has already been a slim and graceful young girl now. The first generation " The test tube baby " The main suitable oviduct stops up, the infertility patient that membrane malposition disease,etc. caused in the uterus. The second generation " The test tube baby " Correct call is that the single sperm injects in afterbirth quality. This is a kind of accurate and exquisite technology, need operating under the microscope: The ovum is fixed by a special fixed device, then is in charge of drawing a sperm with the very thin needle, and penetrate outside the egg cell inhale leading and ovum cell membrane completely; Wait to puncture the syringe needle and enter cytoplasm, inject the sperm into the cytoplasm of the ovum, making it developmental becomes that there is early embryo of 4- 8 cells; Transplant the embryo into people's uterus and continue growing again, until giving a birth. The second generation of test tube baby tested in Belgium successfully at first in 1993, were mainly suitable for few being precise or has not arranged precisely, but the person who has a few sperms in the selected songs tube. 1- 2 of aspiration are good at through can puncturing, may solve the male sterile problem. The third generation " The test tube baby " In fact lay particular emphasis on the embryo and burn the heredity in front of the bed is diagnosed. With first, two generations " The test tube baby " The same, should be through inseminating and getting embryos outside the body. Reach 4- 8 little embryo of cell as the intersection of embryo and development, take out 1 or 2 cell (usually call splitting the ball at medical science) under microscope Carry on the inspection of science of heredity, and keep its integrality. If define embryos do not have hereditary disease, transplants it into people's uterus again, make its continuation grow. This law had already succeeded in 1989. There are 1/5- 1/4 that suffer from the genetic disease in the crowd, carry 5- 6 recessive genes averagely each person, if can there is genetic disease before embryo transfer clearly, will improve the baby's quality after born ining greatly. Certainly, it is easy for this to say, do. Because there are more than 4000 kinds of genetic disease in the whole world, and the pre-natal diagnosis of the third generation of test tube baby is only more than 10 kinds at present, it is difficult to guarantee the child's quality in the future. Three generations " test tube baby " To solving women's infertile and male sterility, and prevent genetic disease from playing a certain role. However, anything has its dual characters, the three generations " test tube baby " Also has his strong points. The IQ has level The question that people care about at first is every generation " The test tube baby " Quality. In fact, this problem has already been listed in the agenda of medical research too. France was once to 370 first generations " The test tube baby " In 6- 13 of follow-up investigation, found their life, study and physical condition are good. Because of the great majority " The test tube baby " Grow in the well-off family of high income and high educational level, the condition is better, and is considered as " The apple of one's eye " ,Receive kind care and education, so is unable to know the 1st generation of " test tube baby " Special talent some day. The second generation " The test tube baby " Sum physiques healthy and how about it is? Recently, scientist of Australia the second generation of " test tube baby " and the 1st generation of " test tube baby " Compare, find the second generation of " test tube baby " IQ and not give a birth naturally than in first generation low, be determined whether there are for 96 on the second generation index, and generation 102, it gives a birth to be 103 naturally. Among them the reason is unable to find out. However, to the second generation of " test tube baby " It is a general common understanding should for more protection and care for. Until 1998, there were more than 100 example the third generation of " test tube babies " in the world . This proves too its technological difficulty is great, and a series of problem remains to solve. Take out 1- 2 to split the ball from the early embryo, may cause embryos to damage, or will initiate abortion in the future. Whether to have influence on the baby already born in the future or not, difficult with the final conclusion at present, need more cases and longer time to prove. Cause many embryos Each person accepts " The test tube baby " Woman,whether which a generation of methods to use, last " the son pills many " --Medicines are (such as phenol of Crow's rice) to urge to ovulate ,Because it changes to hand over to women to only arrange the state of an ovum each month, impels it to discharge several dozen ovums. It is so natural will increase ovarian wound and wound surface. At present, have already known to use " many young animal pills " Woman,will last ovary to a part by increasing, ascites, thorax last liquid, have palpitation, not out of breath, etc, namely the so-called ovary excessively stimulates syndrome. Although can pull through after generally treating, test tube baby's technology that can't walk any more in short term probably too. The first generation " The test tube baby " Can cause much the intersection of afterbirth and fetus because of planting and entering embryos to count too many, go on embryo make a reduction of, put out skill, otherwise many the intersection of fetus and gestation will cause embryo to be little surviving etc. while being difficult, the result rejoices too soon; Also have ectopic pregnancy, premature delivery,etc.. Britain reports that has the ambisexual who appears in the test tube baby, the report of Taiwan of our country gives birth to " mummies " The child, report the person who takes place choriocarcinoma of mother individually both at home and abroad. Using " Many young animal pills " And then, every generation " test tube baby " Mother suffering from ovarian by tumouring. So test tube baby solve men and women just infertile sterility there is no alternative but a kind of technology for it. Can be found out from the above-mentioned situation, every generation " test tube baby " For mother or not there is pros and cons at baby,everybody should understandings correct. Transfer to selecting from " Popular Medicine " from drgama.com

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