Kyoto, after many years, researching artificial sperm from stem cells or stem cells ultimately fruitless. In recent experiments, sperm are made in Japanese scientists successfully fertilize eggs and produce healthy offspring.
These experimental results give new hope for men who have problems with fertility. Estimated 1 in 6 couples have difficulty because of the male offspring are not able to produce seeds that excels in terms of sperm quality and quantity.
Scientists who managed to marry artificial sperm with the egg and produce healthy offspring is Dr. Mitinori Saitou, an expert on stem cells from Kyoto University. Report the results of this research has been published in the latest issue of the journal Cell.
Artificial sperm are mated is not artificial sperm, so that the offspring are also not human-made. Dr. Saitou conduct his experiments with rats and mice produce 60 kittens are able to grow into adult mice are healthy.
Although only tested in mice, this experiment still received criticism from fellow scientists who consider it unethical. Critics rate, this experiment has the potential to create major changes in the reproductive systems of living things so that sex differences were no longer needed.
"Once people can create sperm from female skin cells, or make eggs from male skin cells. Men and women are no longer needed and the way humans breed will change completely," said Joshepine Quintavalle of Comment on Reproductive Ethics, as quoted from Dailymail, Friday (08/05/2011).
Controversy artificial sperm does not just this one up, because his research has been started since a long time. As reported earlier, Dr Takehiko Ogawa of Yokohama City University had already been created sperm from stem cells but has not managed to marry it with the egg.
Other experiments have also tried to wed after rat sperm stem cell development results and successfully produce offspring. But most of the resulting offspring are not healthy, so it is not able to survive to adulthood.
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