Reproduction News and Research

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New way of obtaining embryonic stem cells that avoids contamination by other types of cells

Scientists in the USA have discovered a new way of obtaining embryonic stem cells that avoids contamination by other types of cells and reduces the numbers of embryos needed to create embryonic stem cell lines.

20 Jun 2005

Scientists prove that human embryonic stem cells can develop in the laboratory into the early forms of cells that eventually become eggs or sperm

Their work opens up the possibility that eggs and sperm could be grown from stem cells and used for assisted reproduction, therapeutic cloning and the creation of more stem cells for further research and for the improved treatments for patients suffering from a range of diseases.

19 Jun 2005

Cockroach holds secret of women's fertility

The suggestion that a woman’s reproductive history may affect her ability to have children in the future has been a puzzle to scientists for years.

From The University of Manchester 16 Jun 2005

Role of toxins in inherited disease

A disease you are suffering today could be a result of your great-grandmother being exposed to an environmental toxin during pregnancy.

3 Jun 2005

A new technique might allow women diagnosed with cancer the opportunity to have children when chemotherapy and radiation treatments rob them of their fertility

Freezing eggs is one thing; thawing them safely so they can lead to pregnancy is the challenge. In the past, efforts to freeze a woman's eggs, or oocytes, have not worked well because the cells are large. When the egg is thawed, ice crystals cause damage that prevents the egg from being fertilized.

29 May 2005

IVF treatment less effective in women living with a smoker

According to Canadian study passive smoking is apparently as damaging to a woman’s chances of having successful fertility treatment as being a smoker.

26 May 2005

Vatican says embryo cloning is a crime

An announcement by British researchers saying they had succeeded in creating the country's first - and the world's second - cloned embryo has provoked a top Vatican official to condemn the creation of cloned embryos, describing it as a crime and saying it represents an offence to science.

23 May 2005

Secrets of how the brain is wired for sex revealed

There are two brain structures that a mouse just can't do without when it comes to hooking up with the mate of its dreams--and trying to stay off the lunch menu of the neighborhood cat. These are the amygdala, which is involved in the initial response to cues that signal love or war, and the hypothalamus, which coordinates the innate reproductive or defensive behaviors triggered by these cues.

23 May 2005

Advanced breast cancer drug appears effective on multiple targets

An experimental breast cancer drug that simultaneously attacks five tumor targets has halted progression of the disease in a clinical trial for patients with advanced disease.

18 May 2005

Unsuspected protein CD147, regulates the production of plaque-forming peptides that are the defining feature of Alzheimer's

Researchers at the Department of Energy's Lawrence Berkeley National Laboratory have discovered an unsuspected subunit of the protein complex gamma-secretase, which plays a central role in Alzheimer's disease.

15 May 2005

New anticancer drug SU11248 shows continued response for patients with late-stage kidney cancer

Recent studies of a new anticancer drug show continued response for patients with late-stage kidney cancer. Robert Motzer, MD, attending physician at Memorial Sloan-Kettering Cancer Center (MSKCC), reported a response rate of 40 percent in patients with metastatic (advanced) renal cell (kidney) cancer who received SU11248 in second-line therapy.

15 May 2005

Humans more prone to cancer than chimpanzees

Chimpanzees and humans share a common ancestor, and even today 99 percent of the two species' DNA is identical. But since the paths of man and chimp diverged 5 million years ago, that one percent of genetic difference appears to have changed humans in an unexpected way: It could have made people more prone to cancer.

15 May 2005

Month/season of birth can effect the length of a woman's fertile life

Research by Italian experts on the menopause has found that that the month and the season in which a woman is born influence the age at which she reaches menopause.

12 May 2005

Tumors of the pituitary gland are more common than thought

A recent study found that tumors of the pituitary gland are more common than many health care professionals realize, with national prevalence rates averaging 16.7 percent. To neurosurgeon Dr. Gail Rosseau, this isn't surprising.

1 May 2005

How Ebola virus infects cells - discovery

Ebola virus reproduction in laboratory-grown cells is severely hampered by enzyme-inhibiting chemicals, and these chemicals deserve further study as possible treatments for Ebola virus infections in humans, report scientists supported in part by the National Institute of Allergy and Infectious Diseases (NIAID).

23 Apr 2005

Ancient protein could be critical to stopping the uncontrolled division of tumor cells that cause cancer

Molecular Biology and Microbiology professor Mark Muller has found that the protein, called MKRN1, promotes the destruction of an enzyme called telomerase that enables rapid duplication of cells. While researchers have known for years that healthy cells repress telomerase, they haven't understood why.

19 Apr 2005

Women who smoke cut 10 years off their fertile life

More than a third of British women in their 20s smoke, and the rate, despite aggressive campaigns against smoking, has only decreased slightly in the past five years. One in seven couples experience problems conceiving, and, in cases involving female infertility, no specific cause can be found in 20 per cent of cases.

7 Apr 2005

Genetic testing could bolster radiotherapy's effectiveness against cancer

Obtaining a genetic picture of how a tumor will react to the many treatment techniques available could help doctors prescribe therapies customized for individual cancer patients' needs, suggests a Purdue University research team.

5 Apr 2005

Chronic inflammation caused by too little stomach acid leads to gastric cancer

When it comes to gastric cancer, too little stomach acid can be just as dangerous as too much, according to scientists at the University of Michigan Medical School. Both extremes create inflammatory changes in the stomach lining and a condition called chronic atrophic gastritis, which over time often leads to cancer.

4 Apr 2005

New chemicals to inhibit HIV infection

In corporation with peers from the Mount Sinai School of Medicine, New York University, researchers from the University of Science and Technology of China (USTC), a CAS affiliate, have come up with new chemical inhibitors against HIV reproduction, marking a significant progress in the development of anti-AIDS drugs based on natural host resistance.

4 Apr 2005