Wednesday, February 04, 2009

Human cloned embryos

Oddly, there is very little notice of the confirmation that Advance Cell Technology has created cloned human embryos. Current bioethics and science reporting evidently takes the creation and destruction of human embryos for granted. In fact, the embryonic humans were created with the intention of destroying them.

No one - or almost no one - seems to notice.


Wired Science
has one of the few reports that narrows in on what should be the headline:"Research Breakthrough: Human Clones May Be Genetically Viable."

It is significant that (as reported earlier) human-animal hybrid embryos do not appear to be a practical source for human embryonic stem cells. However, after reading the article itself, it appears that the story with in the story may be - I believe should be - even more significant.

The article, "Reprogramming of Human Somatic Cells Using Human and Animal Oocytes," is available online and free, here, in pdf form. Supplemental information is available here.

Lanza and his colleagues report that they used human eggs and human donor DNA to create about 50 cloned human embryos, all females. They also write that they used a human embryo started by in vitro fertilization as a "control," or material to test the validity of their other results.

Cells were removed for testing from some of the cloned human embryos and the IVF human embryo. Other than that, we do not know the fate of these embryonic human girls.

Edited January 27, 2010 to correct a "Label" typo

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Thursday, October 09, 2008

In vitro fertilization and the beginning of life

The Los Angeles Times (a one time free registration may be required) finally notices that couples who initiate in vitro fertilization are "finding themselves ensnared in a debate about when life begins."

The proposed Colorado amendment states, "The term 'person' or 'persons' shall include any human from the time of fertilization." If it is passed, the courts would have to interpret the meaning of those words, says Kristi Burton, sponsor of the initiative and founder of Colorado for Equal Rights, which focuses on the rights of unborn children. The goal of the amendment, says Burton, a college student, "is to respect and protect all life."

Fertility advocates are skeptical that "personhood laws" wouldn't limit their choices for reproductive healthcare. In August, Resolve released a statement opposing the Colorado amendment.

"The motivation is abortion," says R. Alta Charo, a professor of law and bioethics at the University of Wisconsin at Madison. "If the Supreme Court allows states to declare embryos as personhood, you would be in a position to say immediately that all abortions have to stop."

The reproductive rights of infertile women may not be the target, says Dr. William Schlaff, director of reproductive endocrinology at the University of Colorado Health Sciences Center, "but the implications are massive depending on how this law would be used if adopted."

For instance, what happens to embryos determined to be afflicted with serious genetic diseases? "What do you do with that embryo then?" Schlaff asks.

Says Burton of the initiative's possible ramifications: "All those things would have to be dealt with later on. . . . We don't see it as preventing infertility treatment."

As for the Rathans, over the course of several weeks, the couple ruled out discarding the embryos. They discussed donating them to research but heard that option was a logistical nightmare. They pondered giving the embryos to another infertile couple.

"Before I became pregnant, I thought the decision would be easier for me," Gina Rathan says. "But when it actually happened, I realized these are three potential lives."

Finally, the couple paid for three more years of cryopreservation.

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Tuesday, July 22, 2008

30 years: In Vitro Fertilization,Bioethics and Public Health

My own first child is a little older than Louise Brown, the first child born from in vitro fertilization (IVF). This incidental pioneer celebrates her 30th birthday this month, calling for reviews and editorials on what her birth has meant to culture and to individuals, such as this one from the UK's Telegraph.

It's good to hear that Ms. Brown has a child of her own, "naturally conceived" with her husband. Full circle.

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