Friday, July 6, 2007

Going Too Far

Israeli Doctors Freeze Eggs of 5-Year-Old Girls,2933,287536,00.html
June 30, 2007

Doctors have managed to extract eggs from 5 -year-old girls and freeze them for use when they are old enough to have children.

The scientific advance, which was thought to be impossible, will enable girls suffering childhood cancers such as leukemia to become parents later in life. Thousands are left infertile each year after undergoing chemotherapy.

It also opens the possibility of storing girls’ eggs to protect them against any form of infertility in later life.

Previously it was believed the eggs of prepubescent girls were too immature to be extracted. It was thought they became viable only at puberty by reacting to hormonal changes in the body.

Israeli doctors have, however, managed to extract the eggs and then culture them in test-tubes to make them viable. The resulting eggs are no different to those of a 20-year-old girl, say the doctors.

Report: Mother Donates Eggs to Infertile 7-Year-Old Daughter,2933,288095,00.html
July 05, 2007

A 7-year-old girl could one day give birth to her biological half-brother or half-sister after her mother became what is thought to be the first woman to donate eggs to her infertile daughter.
Melanie Boivin, 35, from Montreal, has placed 21 of her eggs on ice for Flavie Boivin to use when she grows up.
Flavie has Turner syndrome, a condition in which one of the two X chromosomes normally carried by women is missing. It almost always causes infertility, though women who have the condition can conceive with donated eggs.
The mother-to-daughter donation is thought to be the first of its kind. Although many infertile women have been given eggs by their sisters, cousins, nieces and even daughters, biology has always prevented mothers from helping their daughters so far. Even if an infertile woman were just 20 years younger than her mother, the donor would likely be in her 40s and have poor-quality eggs.
By freezing her eggs while she is still in her mid-30s and fertile, Ms Boivin hopes to give Flavie a good chance of having children. Were Flavie to rely on an unrelated donor, she would probably have to wait for several years as there is a shortage of donated eggs in most countries, including Canada.

No comments: