Embryology News and Research

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Embryology is the study of the development of an embryo. An embryo is defined as any organism in an early stage well before birth or hatching, or in plants, before germination occurs.

Theory on evolution of essential genes is overturned

A gene passed on by fathers that plays a vital role in helping fertilised eggs to develop into adults has helped scientists overturn the idea that essential genes have always been part of the genetic makeup of a species.

26 Jan 2005

Available lines of human embryonic stem cells have been contaminated

Currently available lines of human embryonic stem cells have been contaminated with a non-human molecule that compromises their potential therapeutic use in human subjects, according to research by investigators at the University of California, San Diego (UCSD) School of Medicine and the Salk Institute in La Jolla, California.

24 Jan 2005

Mutated gene may provide better idea of how cancer develops and progresses

Scientists are taking the first steps to find out how a gene that is mutated in many cancer cells functions in healthy cells.

6 Jan 2005

Model may explain how alcohol stimulates tumor growth

The investigators found that compared to the saline control group, the embryos exposed to ethanol experienced increases in tumor size, tumor blood vessel density, cancer cell infiltration of blood vessels, and VEGF levels.

13 Dec 2004

Human parathyroid gland most likely evolved from the gills of fish

The human parathyroid gland, which regulates the level of calcium in the blood, probably evolved from the gills of fish, according to researchers from King's College London.

6 Dec 2004

Novel mutagenesis screen used to identify genetic suppressors of thrombosis

Researchers using a novel sensitized ENU (N-ethyl-N-nitrosourea, a carcinogen-induced animal tumor model established to grow malignant and benign tumors) mutagenesis (induction of mutation) screen in laboratory mice have developed a promising approach to genetic screening that can increase the likelihood of identifying dominant suppressors of thrombosis.

6 Dec 2004

One embryo as good as two to maximize the chance of pregnancy

Nearly as many women who received only one embryo at a time gave birth as women who received two embryos. At the same time the risk of giving birth to twins is minimized. These are the findings of a major study from the Sahlgrenska Academy, at Göteborg University in Sweden.

3 Dec 2004

Research provides more evidence of communication between developing nerves and blood vessels

In a developing embryo, the growth of nerves cannot outpace the establishment of life-giving blood vessels. Now, researchers have found that a protein intimately involved in blood vessel patterning actually belongs to a family of proteins known to guide neural development.

18 Nov 2004

Novel enzyme in sperm is essential for spontaneous and independent movement

A study led by scientists at the University of North Carolina at Chapel Hill has found that a novel enzyme in sperm is essential for spontaneous and independent sperm movement as well as male fertility.

16 Nov 2004

The Human Fertilisation and Embryology Authority has issued a preimplantation genetic diagnosis (PGD) licence for inherited colon cancer

The Human Fertilisation and Embryology Authority has confirmed that it has issued a preimplantation genetic diagnosis (PGD) licence for Familial Adenomatous Polyposis Coli (FAP) to the Assisted Conception Unit at University College Hospital, London.

2 Nov 2004

Scientists have found that a protein present in normal body tissues can prevent tumour growth

A team led by Dr Dave Bates, British Heart Foundation Lecturer, and Dr Steve Harper, Senior Research Fellow in the Microvascular Research Laboratories, in the Department of Physiology at Bristol University, have discovered that a type of vascular endothelial growth factor (VEGF) found in normal tissue, including blood, can prevent cancers from growing.

1 Nov 2004

New direction for spinal cord research

A piece of the puzzle of how nerves find their way across the midline of the brain and spinal cord in a developing embryo has been found by Medical College of Georgia researchers.

28 Oct 2004

Presentation of the most recent and advanced work in the rapidly progressing field of fertility preservation

Each year approximately 50,000 women under the age of 40 are diagnosed with breast cancer. Treatments vary but most involve the administration of chemotherapeutic agents or radiation which can disrupt ovarian function or damage a patient’s eggs.

18 Oct 2004

Significant steps to fight a deadly childhood muscle cancer

University of Utah scientists have taken significant steps to fight a deadly childhood muscle cancer by identifying some of the genetic events that cause the disease and then engineering mice that develop the tumors.

16 Oct 2004

Research shows brain cells move like a two-stroke engine

Following the often-quoted advice of Yogi Berra — "You can observe a lot by just watching" — Rockefeller University scientists show that nerve cells in the developing brains of humans and other mammals move in a two-part "step" led by a structure within the cell called the centrosome.

13 Oct 2004

Major step forward in understanding how the organs are placed in their correct positions in the body

Researchers at the Instituto Gulbenkian de Ciência (IGC), in Portugal, have taken a major step forward in understanding one of the fundamental questions in the field of developmental biology today: how the organs are placed in their correct positions in the body.

12 Oct 2004

Eight out of ten women take some form of therapeutic drugs during pregnancy

The advice from the British National Formulary (British Medical Association and the Royal Pharmaceutical Society of Great Britain) is that all drugs should be avoided if possible during the first three months – and only prescribed at all if the benefits to the mother outweigh the risk to the foetus.

6 Oct 2004

Marijuana use may increase the risk of ectopic (tubal) pregnancies

It is not known whether drugs that block or, in the case of marijuana, over-stimulate the CB1 receptor can cause ectopic pregnancy in humans. However, "our results raise caution for women of reproductive ages regarding the chronic use of marijuana for recreation or pain alleviation," the researchers concluded.

27 Sep 2004

32-year-old woman has given birth to a healthy baby 7 years after banking her ovarian tissue before starting chemotherapy

Although she became infertile as a result of the chemotherapy, re-implantation of her ovarian tissue re-started ovulation 5 months later; she became pregnant 11 months after re-transplantation by natural fertilization. Details of the procedure appear in a research article published online by THE LANCET.

23 Sep 2004

Zebrafish atlas will help research community to model human disease

An inch-long tropical fish will enjoy improved global exposure thanks to a five-year, $2.7 million grant from the National Center for Research Resources-National Institutes of Health

22 Sep 2004