Wednesday, July 8, 2009

British scientists claim to create human sperm

Posted in by Illuminated One | Edit
British scientists claim to create human sperm

LONDON (AP) — British scientists claimed Wednesday to have created human sperm from stem cells but other experts questioned their data.

Researchers at Newcastle University and the NorthEast England Stem Cell Institute say they used a new technique to derive what they described as sperm cells from embryonic stem cells. Stem cells have the potential to become any cell in the body.

Newcastle research leader Karim Nayernia said in a statement Wednesday that the technique would allow researchers to study how sperm develops and possibly help develop treatments for infertile men.

The research was published Wednesday in the journal Stem Cells and Development.

But many other British experts cast doubt on the research. They also said the sperm cells created in the laboratory were clearly abnormal.

"I am unconvinced from the data presented in this paper that the cells produced by Professor Nayernia's group from embryonic stem cells can be accurately called 'spermatazoa," said Allan Pacey, a senior lecturer in andrology at the University of Sheffield.

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