Children conceived in vitro may suffer poor memory

29.01.2004

29.01.2004


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The mice were born with the help of reproductive technology, or behave as an adult. Rodents from the tube are more confident than their relatives, conceived naturally, however, differ with the worst memory. Although distribute behaviors of mice to humans is difficult, warns Richard Schultz of the University of Pennsylvania, think it is worth. Think about not affect whether an unnatural way of conception and in public.

In the western world, about 1% of children are conceived through reproductive technologies. At the most widespread method of egg cells are fertilized in vitro cultivated there for a while, and then returned to the uterus. Around the world "test-tube" appeared about a million children. Nevertheless, virtually nothing is known about the long-term effects of such manipulations with embryos. The first test-tube baby — Louise Brown — was born 26 years ago. Until now, only a few have been taken in a systematic effort to study the health and behavior of these children in the long term.

Therefore, the group decided to see Schultz, the behavior of the mouse, conceived in this way. Comparing them with animals conceived the normal way, the researchers found that the mice out of the tube to move more and less afraid — spend a lot of time in open spaces. In this case, they are more common problems with memory and they are worse than studying, "the effect of an ill-defined, but significant."

While the relationship between the behavior of the people "test-tube" and the method of their conception is not installed, we know something else — they are at greater risk of developing a rare genetic disorders such as Beckwith-Wiedemann syndrome. This is a disease manifested in the increase of the size, there is a breach of gene expression in embryonic development. Scientists suspect that the expression of genes can affect the behavior, reports NTR.Ru.

28.01.2004

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