Fertilization News and Research

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Circulating bone-marrow derived cells do not contribute to egg formation

Ovulated egg cells, or oocytes, in adult female mice are not formed from germ cells in the blood or bone marrow.

14 Jun 2006

Centrosomes may contain ribonucleic acid

Despite more than a century of study, scientists know relatively little about the inner workings of centrosomes - organelles essential to cell division in humans and animals.

7 Jun 2006

Researchers discover the presence of the genetic material RNA in the centrosome

Researchers have discovered the presence of the genetic material RNA in the centrosome, the organizing structure inside each cell that assures proper cell division.

6 Jun 2006

Single embryo transfer as successful as double transfer in older women

Research by fertility experts in Finland has demonstrated for the first time that in many cases transferring a single embryo to the womb in women undergoing IVF is just as likely to result in pregnancy and a live birth in those aged 36 to 39 as it is in younger women.

1 Jun 2006

IVF puts woman and fetus at risk of placenta disorder

Researchers say that women who have IVF treatment are more likely to suffer a potentially life-threatening condition than those who conceive naturally.

25 May 2006

Extension of embryo screening will help reduce serious illness

A fertility watchdog in Britain, the Human Fertilisation and Embryology Authority (HFEA), has given approval for the extension of embryo screening to cover a wider range of mutated genes, in the main those which raise the risk of cancer in later life.

11 May 2006

BMA response to new guidance on embryo selection

The BMA believes that it is right to use advances in medical technology to reduce suffering and impairment and we therefore welcome today's decision to extend the criteria for embryo selection.

10 May 2006

New understanding of chromosomal glue

Researchers have a new understanding of the process cells use to ensure that sperm and eggs begin life with exactly one copy of each chromosome - a process that must be exquisitely regulated to prevent problems such as miscarriages and mental retardation.

8 May 2006

Brits warned against foreign IVF treatment

British couples considering going abroad for in-vitro fertilisation (IVF) and other types of fertility treatment have been warned against the practice.

1 May 2006

Fullerene shows promise in reducing radiation side effects

Using transparent zebrafish embryos, researchers at Jefferson Medical College in Philadelphia have shown that a microscopic nanoparticle can help fend off damage to normal tissue from radiation.

11 Apr 2006

Pigs help study of links between polycystic ovary syndrome, obesity, cardiovascular disease and diabetes

Despite the exaggerated, wrinkly snout and long, coarse, spiky hair reminiscent of the 1980s television space alien ALF, some very special swine are helping researchers at Purdue and Indiana universities understand human infertility, diabetes and cardiovascular disease.

4 Apr 2006

New tool helps predict pregnancy outcomes

Physicians must consider a number of variables when treating couples who cannot naturally conceive because of factors involving both the woman and man.

23 Feb 2006

New understanding of the molecular genetics of successful fertilization

A new paper in the February 15th issue of Genes & Development lends novel insight into the cellular changes that occur in sperm while they reside in the female reproductive tract - providing a new understanding of the molecular genetics of successful fertilization.

14 Feb 2006

Preimplantation cell number may affect birthweight

Dr Lieberman et al. at the Department of Obstetrics, Gynaecology and Reproductive Biology at the Brigham and Women's Hospital, Harvard Medical School in Boston, USA have measured the quality of human embryos by counting and assessing the properties of their individual cells.

2 Feb 2006

Oocyte cryopreservation - allows women to freeze their eggs

Researchers at the Yale Fertility Center are now offering a cutting edge reproductive procedure called oocyte cryopreservation that allows women to freeze their eggs and use them at a later time to conceive a child.

27 Jan 2006

Women with endometriosis undergoing IVF benefit from treatment with GnRH agonists

The live birth rate per woman was significantly higher in women with endometriosis who received gonadotrophin releasing hormone (GnRH) agonist for three to six months before commencing in vitro fertilisation (IVF), compared to control groups.

25 Jan 2006

Cloned stem cells are perfectly normal

Scientists generally agree that all cloned animals are biologically flawed. But they don't agree about what that means for stem cells derived from cloned embryos, the basis for therapeutic cloning.

18 Jan 2006

Missing protein C/EBPb may be cause of infertility

The absence of a key protein may lead to infertility. Researchers at the University of Illinois at Urbana-Champaign report that experiments involving mice -- to be detailed in the Proceedings of the National Academy of Sciences -- indicate that the transcription factor protein C/EBPb must be present in the uterus for pregnancy to occur.

18 Jan 2006

Transport mechanisms for serotonin

Researchers at The Forsyth Institute have discovered that the transport mechanisms for serotonin - the chemical substance involved in transmitting signals between neurons, and which has a role in anxiety and mood disorders - play a key role in determining where organs are positioned in the body during embryonic development.

7 Dec 2005

Bacterial DNA and IVF contamination risk on New Scientist

Some children conceived by a common method of IVF could be carrying chunks of bacterial DNA in their chromosomes, according to a study in mice. The researchers who conducted the work say that such accidental genetic modification would be very rare, but they argue that fertility doctors should take more precautions to exclude it.

30 Nov 2005