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Latest Oocyte cryopreservation Stories

2006-07-25 00:30:00

NEW YORK -- In vitro fertilization (IVF), a popular type of test tube fertility technique, is less likely be successful in the mother's eggs have been frozen and stored, researchers report in the journal Fertility and Sterility. With IVF, the egg is fertilized by the sperm outside the body and the resulting embryo is placed in the mother. The egg may be relatively fresh or it may have been obtained in the past and frozen until ready for use. This latter approach allows women with certain...

2006-06-19 07:46:21

By Patricia Reaney PRAGUE (Reuters) - A new method of freezing human eggs could enable many more women, particularly young cancer patients, to have children, Japanese fertility experts said on Monday. Unlike sperm which can be easily frozen, thawed and used in fertility treatments, women's eggs are very fragile and are often damaged when they are thawed. Only about 150 babies worldwide, including three in Britain, have been born from eggs that have been frozen and thawed. But...

2006-06-19 07:45:00

By Patricia Reaney PRAGUE (Reuters) - A new method of freezing human eggs could enable many more women, particularly young cancer patients, to have children, Japanese fertility experts said on Monday. Unlike sperm which can be easily frozen, thawed and used in fertility treatments, women's eggs are very fragile and are often damaged when they are thawed. Only about 150 babies worldwide, including three in Britain, have been born from eggs that have been frozen and thawed. But Japanese...

2005-12-23 13:21:55

NEW YORK (Reuters Health) - It seems that one of the dilemmas facing women undergoing in vitro fertilization need not be a bar to a successful outcome. Usually, IVF produces more embryos than are need for implantation in the womb. The surplus is discarded or frozen, but many women find this objectionable. Now researchers report that the obstacle can be overcome by fertilizing fewer eggs, or oocytes. Although this means that the likely number of embryos available for transfer is...

2005-10-20 12:34:30

By Karla Gale NEW YORK (Reuters Health) - By using sodium-deleted, choline-substituted culture medium and a slow-freeze, rapid-thaw protocol, researchers in Los Angeles have achieved pregnancy success rates of 63 percent resulting from the use of frozen eggs (oocytes). Dr. John K. Jain and his associates at the Keck School of Medicine of the University of Southern California reported their institution's outcomes at the annual meeting of the American Society of Reproductive Medicine...

2005-08-22 12:33:03

By Karla Gale NEW YORK (Reuters Health) - For women seeking to become pregnant with the help of assisted reproductive techniques such as in vitro fertilization, reasonable pregnancy rates of at least 5 percent per cycle are obtainable through the end of the 43rd year, researchers at Harvard Medical School have found. After that, they report, the rate of live births is low -- no higher than 2.3 percent. Based on the findings, Dr. Sigal Klipstein and her colleagues recommend that...

2005-05-29 23:15:00

ANN ARBOR, Mich. - A new technique might allow women diagnosed with cancer the opportunity to have children when chemotherapy and radiation treatments rob them of their fertility, researchers at the University of Michigan Comprehensive Cancer Center have found. By having her eggs frozen before she begins cancer treatments, a woman can preserve the hope of one day having a baby. Freezing eggs is one thing; thawing them safely so they can lead to pregnancy is the challenge. In the past,...


Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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