Embryonic Development News and Research

RSS

Embryonic development or embryogenesis is the process by which the embryo is formed and develops. It starts with the fertilization of the ovum, egg, which, after fertilization, is then called a zygote. The zygote undergoes rapid mitotic divisions, the formation of two exact genetic replicates of the original cell, with no significant growth (a process known as cleavage) and cellular differentiation, leading to development of an embryo.

Conception and pregnancy put at risk by marijuana use

According to new research the use of marijuana when a woman is trying to conceive or has just become pregnant, is not recommended as it endangers the passage of the embryo from the ovary to the uterus and can result in a failed pregnancy.

2 Aug 2006

Loss of Matrilin-3 gene leads to osteoarthritis

A gene that is associated with osteoarthritis and skeletal deformities in people has been shown to be responsible for preventing the onset of osteoarthritis in adult mice, according to a recent study led by Rhode Island Hospital.

24 Jul 2006

In vitro fertilisation could be causing genetic errors in embryo

The conditions in which embryos are cultured in the laboratory during in vitro fertilisation could be causing genetic errors that are associated with certain developmental syndromes and other abnormalities in growth and development, such as low birth weight.

19 Jun 2006

New method of testing eggs for abnormalities could solve problems of embryo freezing

Italian researchers have shown for the first time that it is possible to test a woman's egg, before fertilisation, for chromosomal abnormalities that might make an embryo less likely to implant successfully or more likely to miscarry at a later stage.

19 Jun 2006

New roles for growth factors

During embryonic development, nerve cells hesitantly extend tentacle-like protrusions called axons that sniff their way through a labyrinth of attractive and repulsive chemical cues that guide them to their target.

18 Jun 2006

Stem cell breakthrough

Researchers at The Hospital for Sick Children (SickKids) and the University of Calgary have found that stem cells derived from adult skin can create neural cell types that can be transplanted into and function in mouse models of disease.

14 Jun 2006

Two specific genes, Wnt4 and Fgf9 fight to determine sexual differentiation

Whether or not a fertilized mammalian egg ultimately develops into a male or female is determined by the winner of a tug of war between two different genes encoding signaling proteins and the divergent pathways they control.

1 Jun 2006

DARPA grant supports research toward realizing tissue regeneration

While U.S. soldiers fighting in Iraq and Afghanistan are surviving injuries that in previous conflicts likely would have been fatal, the number of wounded with major tissue loss has never before been so high.

3 May 2006

Discovery brings embryonic stem cell medicine a step closer

A team of scientists announced a critical step on the path of realizing the promise of embryonic stem (ES) cells for medicine. The researchers have discovered unique molecular imprints coupled to DNA in mouse ES cells that help explain the cells' rare ability to form almost any body cell type. These imprints, or "signatures," appear near the master genes that control embryonic development and probably coordinate their activity in the early stages of cell differentiation. Not only do these findings help to unlock the basis for ES cells' seemingly unlimited potential, they also suggest ways to understand why ordinary cells are so limited in their abilities to repair or replace damaged cells.

26 Apr 2006

Scientists gain greater understanding of how embryos differentiate left from right

Researchers at the Forsyth Institute have discovered a new mechanism responsible for early left/right patterning, the process by which organs locate themselves on the left or right side of the body.

19 Apr 2006

Active ingredient in soy may explain why Asians have lower rates of obesity and cancer

A single nutrient found in soy products elicits changes in gene behavior that permanently reduce an embryo's risk of becoming obese later in life, according to an animal study at Duke University Medical Center.

13 Apr 2006

Research explains why recipients of growth hormone therapy may develop colon polyps

The use of growth hormone therapy has been linked in some people to the development of colon polyps, a possible precursor to colorectal cancer - but medical researchers have debated the extent of a cancer risk.

11 Apr 2006

Losartan can prevent progression of Marfan syndrome

A commonly prescribed blood pressure medication may provide the first ray of hope in preventing potentially deadly complications of Marfan syndrome, a genetic disease that weakens the structural meshwork of blood vessels.

11 Apr 2006

Protein loss linked to colon polyp risk from growth hormone

10 Apr 2006

Dysregulation of the Hedgehog pathway in human hepatocarcinogenesis

The unchecked activity of a cell signaling pathway crucial in embryonic development and the liver's response to injury leads to liver cancer, researchers from Duke University Medical Center and John Hopkins University School of Medicine have found.

4 Apr 2006

Scientists reprogramme malignant melanoma cells to become normal pigment cells

Scientists at Northwestern University and the Stowers Institute for Medical Research have reprogrammed malignant melanoma cells to become normal melanocytes, or pigment cells, a development that may hold promise in treating of one of the deadliest forms of cancer.

1 Mar 2006

Study provides further insight into the molecular control of apoptosis

Researchers at Yale School of Medicine have gained deeper understanding of two members of a family of proteins called caspases that play a key role in promoting apoptosis, a process in which the cell responds to external signals by essentially committing suicide.

23 Feb 2006

Cell growth and cell division genes identified

A recent study shows that hundreds of genes contribute to cell growth and cell division. For the first time these genes, many of which are potential contributors to cancer, have been mapped in a single systematic study.

23 Feb 2006

Cancer researchers find evolutionary change that occurred in a key developmental signalling pathway

Cancer researchers at the University of Helsinki, in trying to find a novel tumor suppressor gene, instead found an important evolutionary change that occurred in a key developmental signalling pathway. The finding suggests a potential mechanism for evolution of complex intercellular signalling pathways.

9 Feb 2006