Oocytes in Medical News

Fertility experts present the latest research at reproductive medicine meeting

... with any measurable detrimental effects on the oocytes or resulting embryos. They found that Ovidrel ... induction and as a result, had similar mature oocytes harvested as age-matched controls. The ... and all patients successfully achieved embryos or oocytes for cryopreservation despite their illness and ...

New ovarian stimulation technique offers more cancer patients the chance to preserve their fertility

... days in the second group. A mean average of 13 oocytes were collected from the first group and 10 from the second group. Nearly 77% and 73% of the oocytes were mature in the respective groups, and after ... sperm injection (ICSI), 70% and 75% of the oocytes were fertilised respectively. The researchers ...

Pacific Fertility Center Announces Breakthrough in Egg Freezing Technology

... embryos created from vitrified and warmed donor oocytes (eggs), successfully delivered a baby in late ... to oocytes. "Even though we've been handling oocytes and embryos for many years, this technology ... the procedure, we began to freeze high quality oocytes from donors that had proven fertility. Using ...

Stem Cells Spur New Eggs in Ovaries of Adult Mice

... mammals, including humans, are born with a finite number of the eggs or oocytes needed to produce offspring. "These stem cells are continuous. They ... For years, scientists had believed that the capability to produce oocytes was lost in most mammalian species at birth. That line of thought was ...

Reduced ovarian reserve associated with increased risk of trisomic pregnancy

... may cause a decrease in ovarian reserve. However, a woman's ovarian reserve is most likely to be mainly determined by her genes: the number of oocytes a woman is born with and the rate of depletion of her oocyte pool is believed to be heritable. This is reflected in the similar ages at menopause of ...

Technique Preserves Future Fertility in Girls With Cancer

... at Hadassah Hebrew University Medical Center in Jerusalem, working with 19 patients ages 5 to 20, were able to retrieve an average of nine oocytes (immature eggs) per patient, and 34 percent of these eggs successfully matured. The researchers will next test the ability of these eggs to become ...

June 2008 highlights

... that reproductive markers were disrupted not only in the female offspring of these rats, but also in the grand offspring, which are derived from oocytes present in fetuses of the treated females. Changes in the second generation included blunting of preovulatory LH release, reduced progesterone ...

Study Spots Gene That Plays Role in Infertility

... where they are available for immediate release and, perhaps, fertilization. Menopause occurs when there are no more follicles and, therefore, no more oocytes left. The length of a woman's reproductive life is determined by the size of her follicle pool and the rate at which this pool is depleted. ...

Human embryonic stem cell lines created that avoid immune rejection

... Cell and colleagues at the company and from the Russian Academy of Medical Sciences, described the successful parthenogenetic activation of human oocytes and the subsequent derivation of cell lines having the morphology and markers characteristic of human embryonic stem cells. In a paper entitled, HLA ...

MUHC in the spotlight at the 14th World Congress on In Vitro Fertilization

... preserving surgical strategies in ovarian, endometrial and cervical cancer Rio-Cheng Chian - Wednesday 19.09.2007 at 10:30am Vitrification of oocytes Male infertility : - Peter Chan - Monday 17.09.2007 at 2:00 pm Impact of chemotherapy on the reproductive health of men - Bernard ...

World fertility experts to meet in Montreal - IVF and IVM patients to provide first-person accounts at 14th World Congress

... research, preimplantation genetic diagnosis, minimally-invasive surgery, implantation, endometriosis, male infertility, in-vitro maturation of oocytes and fertility preservation and the ethical and social aspects of IVF. Among the honored guests will be Professor Robert Edwards, who developed the ...

OHSU is part of national effort to preserve, restore fertility in women with cancer

... about the growth of follicles in the ovaries and either to preserve or restart this function. Follicle growth is necessary for the development of oocytes (fertile eggs) in the ovaries. Past research has demonstrated that cancer therapies often destroy follicles in the ovaries, thereby reducing ...

Infertility Breakthrough With First Birth from Lab-matured Egg

... "Until now, it was not known whether oocytes (human eggs) collected from unstimulated ovaries, ... for several months and then thawed. Of these, 148 oocytes survived the thawing process and were fertilised ... time to undergo ovarian stimulation so that their oocytes can be harvested and stored. Their only ...

Embryo Protection Law in Germany

... nearly 19 per cent resulted in births when fresh oocytes were used, but the cumulative delivery rate from both fresh and frozen oocytes was 30 per cent. By contrast, in the UK, ... 22% of the deliveries occurred after fresh oocytes were used, but the cumulative delivery rate ...

Renewable Oocytes of Mice created hope in Human Fertility Treatment

... its age female mice have a renewable number of oocytes (egg) supply in their ovaries//. As a ... female mammals are born with a finite number of oocytes (eggs). Two years ago, international ... the mammalian ovary, reproductive cells called oocytes (eggs) develop within ovarian follicles. In ...

Brain Tumor Drug in Frogs A New Report

... and offers great hope as a therapeutic treatment of the future.Amphinase is a version of a ribonuclease enzyme that has been isolated from the oocytes (egg cells) of the Northern Leopard frog. Ribonucleases are a common type of enzyme found in all organisms. They are responsible for tidying ...

Girls With Cancer Given Fertility Hope

... research at the annual meeting of the European Society of Human Reproduction and Embryology in Lyon, France, this week. We were able to extract oocytes \ using needle aspiration from very young girls, he told the European Society of Human Fertilization and Embryology conference in Lyon. ...

UK Scientists Plan To Create Human-Cow Embryos

... from young women will be required to generate a single human embryonic stem cell line. Therefore we consider it more appropriate to use non-human oocytes from livestock as a surrogate'. But the argument goes on and on and does not justify the ....

Only A Few Differentiating Factors Between Adult And Stem Cells

... embryo. Cells from other parts of the body can also be "reprogrammed" by transferring their nuclear contents into egg cell precursors called oocytes or by fusion with embryonic stem cells, earlier studies showed. Those findings provided evidence that unfertilized eggs and embryonic stem ...

Quick freezing technique of the human egg

... of the European Society of Human Reproduction and Embryology (ESHRE), said "This is a major improvement, and for the first time, cryopreservation of oocytes (eggs) represent a realistic option for the preservation of fertility in women who are in need of aggressive treatment for malignant diseases." ...

Testtube Babies Born in Kenya

... Although strict embryo transfer policies have been enforced they are not followed nor accepted universally. The cryopreservation of mature oocytes and even embryos that have not been transferred, in liquid nitrogen, is often performed, for subsequent pregnancies. This has raised several ethical ...