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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

Discovery alters long standing concept of fixed protein structure

The thousands of proteins found in nature are simply strings of amino acids, assembled by genes, and scientists have long believed that they automatically fold themselves into uniquely fixed, 3-dimensional shapes to fire the engine of life.

19 Mar 2008

Cutting edge computing sheds light on how life on earth may have originated

The UK's national computing grid, along with their counterparts in the US (TeraGrid) and Europe have helped UCL (University College London) scientists shed light on how life on earth may have originated.

19 Mar 2008

At home genomic tests for disease risk may be premature

The recent marketing of "at home" genomic tests for disease risk may be premature, according to Dr. Kenneth Offit, MD, MPH, Chief of the Clinical Genetics Service at Memorial Sloan-Kettering Cancer Center (MSKCC).

19 Mar 2008

Zebrafish enables cell regeneration studies to help understand, treat human disease

One aquarium fish's uncanny ability to regenerate essentially any cell type has given scientists a way to mimic cell loss that occurs in diseases such as Parkinson's and diabetes then watch how the fish make more of them.

18 Mar 2008

New information on HIV genetic switch

If the battle against HIV, the virus that causes AIDS, is a chess match, then new research published today gives new insight into one of the virus' most important moves.

18 Mar 2008

Inbred Romanian community provides insight into genetic factors associated with vitiligo

An isolated, inbred Romanian community has a higher than average frequency of the skin disease vitiligo and other autoimmune diseases, suggesting a genetic variation that may indicate susceptibility to the condition in a broader population, according to a report in the March issue of Archives of Dermatology, one of the JAMA/Archives journals.

18 Mar 2008

New understanding of rare immune disorder called Job's syndrome

Scientists have made another major breakthrough--the second in the past year--in understanding a rare immune disorder called Job's syndrome.

18 Mar 2008

On the trail of rogue genetically modified pathogens

Bacteria can be used to engineer genetic modifications, thereby providing scientists with a tool to combat many challenges in areas from food production to drug discovery.

18 Mar 2008

National Institutes of Health launches center to study genomics and health disparities

The National Institutes of Health (NIH) has announced the establishment of the NIH Intramural Center for Genomics and Health Disparities (NICGHD), a new venue for research about the way populations are impacted by diseases, including obesity, diabetes and hypertension.

18 Mar 2008

New discovery alters longstanding concept of fixed protein structure

18 Mar 2008

London's HIV epidemic was driven by clusters of sexual contacts

The rapid growth of the HIV/AIDS epidemic in London during the late 1990s was driven in part by transmission of the AIDS virus within clusters of sexual contacts, with individuals frequently passing the virus to others within months after becoming infected themselves, according to research published in PLoS Medicine by Andrew Leigh Brown and colleagues at the University of Edinburgh and London's Chelsea and Westminster Hospital.

18 Mar 2008