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Mouse stem cell line advance suggests potential for IVF-incompetent eggs
Researchers have found that mouse oocytes that fail to become fertilized during in vitro fertilization are nevertheless often capable of succeeding as "cytoplasmic donors" during a subsequent cloning step using so-called nuclear transfer. view more (2007-02-20)
Presentation of the "Document on the Freezing of Oocytes for Human Reproduction"
The Observatory of Bioethics and Law has made public its latest "Document on the Freezing of Oocytes for Human Reproduction", which upholds the authorisation of the cryopreservation of oocytes for use in assisted reproduction. The Document was drawn up by the Opinion Group of the Observatory of Bioethics and Law of the University of... view more... (2002-05-07)
Animal eggs not suitable substitutes to produce stem cells
Since the cloning of Dolly the Sheep over a decade ago, somatic cell nuclear transfer (SCNT) has been considered a promising way to generate human, patient-specific stem cells for therapeutic applications. view more (2009-02-03)
Aging brain reduces ovulation
Dutch researcher Annelieke Franke has discovered that the aging of the brain adversely affects the fertility of female rats. The scientist suspects that her research will provide insights into fertility problems of women over the age of 30. Franke studied relatively young subfertile rats. Although the pituitary gland and ovaries of these rats... view more... (2003-10-10)
Egg's Energy Stores Key to Preserving Fertility
An immature egg's internal nutrient supply is critical to its survival, an insight that offers a new route to understanding and treating infertility due to egg death. view more (2005-10-07)
First study of children born after in vitro maturation indicates the technique is safe
Children born after female eggs were matured in the laboratory are healthy, according to the first survey of babies born using this technique. Since 1997 doctors at the Fertility Clinic in Herlev, Denmark, have been helping women to have babies using a technique called in vitro maturation. This involves taking immature oocytes (eggs) from the... view more... (2003-06-27)
Fertility hope as study shows eggs survive in older ovaries
In research that could have broad implications for women's fertility treatments, scientists have found that despite their age, female mice have a renewable egg supply in their ovaries. view more (2006-07-06)
Rong Li Lab probes mechanism of asymmetry in meiotic cell division
The Stowers Institute's Rong Li Lab has characterized a mechanism that allows for asymmetrical cell division during meiosis in oocytes. By tracking chromosome movement in live mouse oocytes, the team discovered that chromosomes can recruit to their vicinity a protein called formin-2. view more (2008-10-08)
First evidence that genetic imprinting occurs at earliest stage in test tube-matured eggs
Madrid, Spain: New research indicates that attempts to mature ovarian follicles in the laboratory may hit a stumbling block unless better 'growing' conditions can be identified. A French team[1] of fertility experts has revealed for the first time that maternal genetic imprinting errors can occur at the very earliest stages of egg follicle... view more... (2003-06-27)
European experts slam new Italian fertility proposals: "Disaster for women" says ESHRE chairman
Vienna, Austria: Fertility experts meeting in Vienna today (Saturday 29 June) attacked proposals by the Lower House of the Italian Parliament that could encourage multiple pregnancies. They have described the proposals as "unethical" and are seriously worried that they will put women and their babies at risk. Members of the Italian Lower... view more... (2002-06-29)
Joslin study refutes recent report that bone marrow can replenish female oocytes
Ovulated egg cells, or oocytes, in adult female mice are not formed from germ cells in the blood or bone marrow. That's the conclusion of a new study led by investigators at Joslin Diabetes Center and Harvard University. view more (2006-06-15)
New ovarian stimulation technique offers more cancer patients the chance to preserve their fertility
Researchers have shown for the first time that it is possible to stimulate a woman's ovaries to produce eggs for collection during the final phase of the menstrual cycle. view more (2008-07-08)
Just Look At Spermatozoid Critically
In vitro fertilisation is one of the methods for overcoming infertility. This procedure is rather complicated and expensive. That is why the patients want to be sure about the successful result in advance. The investigations carried out at the Ott Research Institute of Obstetrics and Gynaecology, Russian Academy of Medical Sciences, and St.... view more... (2001-09-21)
A unique arrangement for egg cell division
Which genes are passed on from mother to child is decided very early on during the maturation of the egg cell in the ovary. view more (2007-08-10)
Universitat Autonoma de Barcelona researchers first to clone mice in Spain
Researchers at the Department of Cell Biology, Physiology and Immunology at Universitat Autònoma de Barcelona (UAB) are the first to have cloned mice in Spain. Cloe, Cleo and Clona are three female brown-coloured mice and were born respectively on 12 May, 3 June and 10 June. view more (2009-06-12)
MGH researchers confirm that bone marrow restores fertility in female mice
A new study from Massachusetts General Hospital (MGH) researchers confirms that female mice that receive bone marrow transplantation after fertility-destroying chemotherapy can go on to have successful pregnancies throughout their normal reproductive life. view more (2007-08-01)
Heavy smoking cuts women's chance of pregnancy — even with donated oocytes
Heavy smoking may reduce female fertility by directly affecting the uterus - making it less receptive and reducing the chances the embryo will implant, according to research published on line (Thursday 9 November) in Europe's leading reproductive medicine journal Human Reproduction. view more (2006-11-09)
Italy now faces worldwide storm of protest over fertility proposals
Italian legislators now face worldwide condemnation by fertility experts for IVF proposals that could encourage multiple pregnancies and put babies at risk. The International Federation of Fertility Societies (IFFS) has added its voice to that of the European Society of Human Reproduction and Embryology, who have already described the proposals as... view more... (2002-07-03)
Bone marrow may be source of new egg-cell generation in adult mammals
Last year a group of Massachusetts General Hospital (MGH) researchers announced surprising findings that female mice - contrary to longstanding theories of mammalian reproductive physiology - retained the ability to make new egg cells or oocytes into adulthood. view more (2005-07-28)
Stowers Institute's Hawley Lab identifies factors responsible for restart of meiotic cycle
The Stowers Institute's Hawley Lab has identified a pair of proteins that work in concert to restart the meiotic cycle of oocytes following a natural period of dormancy. view more (2007-12-05)
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