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How humans make up for an 'inborn' vitamin C deficiency

A new study appears to explain how humans, along with other higher primates, guinea pigs and fruit bats, get by with what some have called an “inborn metabolic error”: an inability to produce vitamin C from glucose.

24 Mar 2008

Deadly genetic disease prevented before birth in zebrafish with genetic patch

By injecting a customized "genetic patch" into early stage fish embryos, researchers at Washington University School of Medicine in St. Louis were able to correct a genetic mutation so the embryos developed normally.

24 Mar 2008

Breast cancer gene carriers' risk 'amplified' by additional genes

Many women with a faulty breast cancer gene could be at greater risk of the disease due to extra 'risk amplifying' genes, according to research published in the American Journal of Human Genetics today.

24 Mar 2008

Folic acid improves a man's chance of becoming a father

According to new research from the U.S. men who want to father a child will improve their chances by taking folic acid supplements.

21 Mar 2008

Cholesterol-associated gene variants can predict cardiovascular events

A study appearing in this week's New England Journal of Medicine confirms that a combination of gene variants previously associated with cholesterol levels does reflect patients' cholesterol levels and can signify increased risk of heart attack, stroke or sudden cardiac death.

20 Mar 2008

Low levels of dietary folate linked to sperm abnormalities

Healthy men who report lower levels of the nutrient folate in their diets have higher rates of chromosomal abnormalities in their sperm, according to a new study by researchers at the University of California, Berkeley, and the Lawrence Berkeley National Laboratory.

20 Mar 2008

Shorter radiotherapy courses can benefit breast cancer patients

A LOWER total dose of radiotherapy, delivered in fewer, larger treatments has been shown to be as effective as the international standard of a higher total dose delivered over a longer time to treat women with early breast cancer according to new research published in the Lancetand Lancet Oncology.

20 Mar 2008

New understanding of Norwalk virus

Using the Canadian Light Source synchrotron, an international team led by University of Calgary researcher Ken Ng has determined the detailed structure of the enzyme the Norwalk virus uses to make copies of its genetic code in order to replicate itself.

20 Mar 2008

New study confirms that PROGENSA PCA3 can improve accuracy of prostate cancer diagnosis

New clinical data from a study of 570 men published in the peer-reviewed Journal of Urology support the use of PROGENSA PCA3 as a tool for diagnosing prostate cancer. The study confirms that PROGENSA PCA3, the world's first gene-based urine test to help detect prostate cancer, can provide clinicians with valuable information that helps guide diagnosis.

20 Mar 2008

Neuronal regulators offer potential targets for cancer

Being too brainy can be a bad thing in a junior high cafeteria, where the social hierarchy favors other traits. "Braininess" also causes problems for cells.

20 Mar 2008

Parasitic worm Schistosoma mekongi more widespread than previously thought

A new genetic analysis, published March 19th in the open-access journal PLoS Neglected Tropical Diseases, suggests that the parasitic worm Schistosoma mekongi is more widespread than previously thought.

20 Mar 2008

Disruption of the Contactin 4 gene on chromosome 3 may be linked to autism spectrum disorder

Eli Hatchwell, M.D., Ph.D., Associate Professor of Pathology at Stony Brook University Medical Center, and colleagues have found that a disruption of the Contactin 4 gene on chromosome 3 may be linked to autism spectrum disorder (ASD).

20 Mar 2008

The effect of melatonin on colitis

In rats with experimental colitis, the marked increase in bacterial translocation in postcolitis rats has been reversed by melatonin administration.

19 Mar 2008

Scans spot hidden tumors in Li-Fraumeni syndrome

Researchers at Dana-Farber Cancer Institute report that full-body PET/CT scanning detected unsuspected, treatable tumors in 3 of 15 patients with Li-Fraumeni syndrome (LFS), a rare genetic cancer syndrome for which no screening tests have been recommended.

19 Mar 2008

Past child abuse plus variations in gene result in potent PTSD risk for adults

A traumatic event is much more likely to result in posttraumatic stress disorder (PTSD) in adults who experienced trauma in childhood - but certain gene variations raise the risk considerably if the childhood trauma involved physical or sexual abuse, scientists have found.

19 Mar 2008

New method to determine the “selective signature” of a gene

Scientists at MIT have come up with a mathematical approach for analyzing a protein simultaneously in a set of ecologically distinct species to identify occurrences of natural selection in an organism's evolution.

19 Mar 2008

$Variants of the gene LRP5 associated with increased risk of bone fractures, low bone mineral density$

Variants of the gene LRP5 associated with increased risk of bone fractures, low bone mineral density

Results from a large study indicate that variants of the gene LRP5 are associated with a significant increase in the risk of fractures, by up to 20 percent, and lower levels of bone mineral density in the spine and hip, according to a study in the March 19 issue of JAMA, a theme issue on Genetics and Genomics.

19 Mar 2008

Silencing gene in tobacco plants reduces harmful carcinogens

In large-scale field trials, scientists from North Carolina State University have shown that silencing a specific gene in burley tobacco plants significantly reduces harmful carcinogens in cured tobacco leaves.

19 Mar 2008

Family communication impacts attitude about genetic counseling/testing for breast cancer

Whether or not relatives talk about the family's history of cancer significantly impacts attitudes and knowledge about genetic counseling and testing for those at moderate risk of developing breast cancer, according to a new preliminary study presented today at the American Society for Preventive Oncology meeting in Bethesda, Md.

19 Mar 2008

Europeans can now check out on-line the credentials of laboratories offering genetic tests

Over the last two years, EuroGentest, an EU-funded project, has collated in-dept data on the majority of the 1500 + laboratories involved in Member and associated EU States. This data is now freely searcheable as part of the new version of Orpha.net, the leading public portal for rare disease information launched today.

19 Mar 2008