Laboratory News and Research

RSS

Natural killer cells help understand responses to bone marrow transplants

Scientists have discovered that a group of important immune system cells has a surprising resemblance to cinematic British superspy James Bond: the cells receive a "license" that allows them to unleash their most potent attacks on enemies.

4 Aug 2005

New breast cancer genes detected using cutting edge technology

Scientists in the UK say they have detected four new genes believed to be involved in the development of breast cancer.

4 Aug 2005

Final tests negative for mad cow disease in the U.S.

The U.S. Department of Agriculture's (USDA) National Veterinary Services Laboratories (NVSL) in Ames, Iowa, has determined that the non-definitive test result reported on July 27 is negative for BSE. Tests conducted by the Veterinary Laboratories Agency in Weybridge, England, are also negative for BSE.

4 Aug 2005

Scientist have found an unexpected effect of the interaction of PTEN and p53 genes in early stage prostate cancer

Prostate cancer, the second leading cause of cancer death for men in the United States, is caused by changes in several tummor suppressor genes including PTEN and p53. Up to 70 percent of men with prostate cancer have lost one copy of the PTEN gene at the time of diagnosis, and p53 is absent in a high number of patients with advanced prostate cancer.

3 Aug 2005

Customized gene chip offers clues to prognosis in cases of neuroblastoma

Rather than covering the entire genome, the microarray focuses on suspect regions of chromosomes for signs of deleted genetic material known to play a role in the cancer.

2 Aug 2005

Successful visceral leishmaniasis vaccine trial in dog

Visceral leishmaniasis, which is the most severe form of that group of diseases, affects 500 000 people in the world each year. It is caused by a protozoan, Leishmania infantum, transmitted by sand fly bites.

2 Aug 2005

Pig fever added to notifiable disease list

Secretary for Hong Kong's Health, Welfare & Food Dr York Chow said today the move will enable the Government to strengthen surveillance, and aid early detection and implementation of health control measures.

2 Aug 2005

High fructose corn syrup: a safe, natural ingredient

The July 31 article "Fructose sweetning could be even worse than using other sweeteners," mischaracterizes high fructose corn syrup (HFCS), a natural, home-grown sweetener from U.S. corn fields. The article reports on a recent University of Cincinnati study whose authors assert that the body processes HFCS differently than other sugars due to the fructose content.

2 Aug 2005

$US1 million for artery research

A team of James Cook University researchers have received more than $1 million in funding to investigate an important medical problem.

2 Aug 2005

Evaluation of sexual abuse in children takes special skills

More than 88,000 children in the United States were confirmed victims of sexual abuse in 2002. Studies have suggested that each year approximately one percent of children experience some form of sexual abuse, resulting in the sexual victimization of 12 to 25 percent of girls and 8 to 10 percent of boys by 18 years of age.

2 Aug 2005

Swine flu figures rise as China gets tough

As the numbers rise from the swine flu outbreak, China authorities swear they will punish officials who falsify or delay reports on the deadly disease that has now infected 198 people and killed 36.

2 Aug 2005

Customized gene chip will offer clues to prognosis in cases of neuroblastoma

Genetics researchers have developed a customized gene chip to rapidly scan tumor samples for specific DNA changes that offer clues to prognosis in cases of neuroblastoma, a common form of children's cancer.

2 Aug 2005

Omega-6 fatty acids promote the growth of prostate tumor cells in the laboratory

A study conducted at the San Francisco VA Medical Center (SFVAMC) has demonstrated that omega-6 fatty acids such as the fat found in corn oil promote the growth of prostate tumor cells in the laboratory.

2 Aug 2005

Aging profile of the human brain differs greatly from that seen in chimpanzees

Researchers have found that the two primary areas of the human brain appear to age in radically different ways: The cortex used in higher-level thought undergoes more extensive changes with age than the cerebellum, which regulates basic processes such as heartbeat, breathing and balance.

2 Aug 2005

Protein called cyclin D1 disrupts BRCA1's normal role as a cancer inhibitor

For about a decade, scientists have recognized that many cases of hereditary breast cancer result from a mutation of a specific gene called BRCA1, which, in its normal state, helps keep tumor formation in check. About five to 10 percent of breast cancer cases are linked to genetic miscues, about half of which are linked to BRCA1.

2 Aug 2005

New laser therapy that destroys cancer cells but leaves healthy ones unharmed

Scientists at Stanford University have developed a new laser therapy that destroys cancer cells but leaves healthy ones unharmed. The new, non-invasive treatment is described in a study published in the Aug. 1 online edition of the Proceedings of the National Academy of Sciences (PNAS).

2 Aug 2005

Arf gene prevents excessive growth of blood vessels in the developing eye

A gene better known for its role in preventing cancer also plays a key role in the developing embryo, where the gene prevents excessive growth of blood vessels, according to investigators at St. Jude Children's Research Hospital.

2 Aug 2005

Laser scissor-and-tweezers technology called RoboLase performed across the Pacific

In an effort to combine sophisticated laser and Internet technologies, scientists in Australia have successfully performed laser surgery and "optical trapping" in a Southern California laboratory via the Internet.

1 Aug 2005

Inhibitors of cellular enzymes could be developed for SARS treatment

Researchers from the University of Pennsylvania School of Medicine have found that inhibitors of an enzyme called cathepsin L prevent the SARS (severe acute respiratory syndrome) virus from entering target cells. SARS is caused by an emergent coronavirus. There is no effective treatment at this time.

1 Aug 2005

Brain may interpret the information it receives from sensory neurons using a code more complicated than scientists previously thought

...according to new research from the National Autonomous University of Mexico and Cold Spring Harbor Laboratory. By studying how monkeys perceive a vibrating object when it touches the skin, scientists found that changes in an animal's attention over time influence how a sensory signal is interpreted.

1 Aug 2005