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Epigenetics may account for some inherited traits and diseases

Embargoed Until January 18, 2009 at 18:00 Greenwich Mean Time / 13:00 Eastern Standard Time (TORONTO): Scientists at the Centre for Addiction and Mental Health (CAMH) have detected evidence that DNA may not be the only carrier of heritable information; a secondary molecular mechanism called epigenetics may also account for some inherited traits and diseases.

19 Jan 2009

Microbes within gut may hold key to one cause of obesity

In terms of diversity and sheer numbers, the microbes occupying the human gut easily dwarf the billions of people inhabiting the Earth.

19 Jan 2009

Researchers identify biochemical switch required for nerve cells to respond to DNA damage

The finding, scheduled for advance online publication in Nature Cell Biology, illuminates a connection between proteins involved in neurodegenerative disease and in cells' response to DNA damage.

19 Jan 2009

Less severe first heart attacks linked to decline in coronary heart disease deaths

The severity of first heart attacks has dropped significantly in the United States - propelling a decline in coronary heart disease deaths, researchers reported in Circulation: Journal of the American Heart Association.

19 Jan 2009

Large DNA stretches, not single genes, shut off as cells mature

Experiments at Johns Hopkins have found that the gradual maturing of embryonic cells into cells as varied as brain, liver and immune system cells is apparently due to the shut off of several genes at once rather than in individual smatterings as previous studies have implied.

19 Jan 2009

Breakthrough in treatment of cancers and infectious diseases

Dr. André Veillette, a researcher at the Institut de recherches cliniques de Montréal (IRCM), and his team led by postdoctoral fellow Dr. Mario-Ernesto Cruz-Munoz, will publish in the upcoming issue of the prestigious journal Nature Immunology of Nature Publishing Group.

19 Jan 2009

Genetic testing not cost-effective in guiding initial dosing of blood-thinner warfarin

New analyses led by the University of Cincinnati (UC) show that genetic testing used to guide initial dosing of the blood-thinner warfarin may not be cost-effective for typical patients with atrial fibrillation but may be for patients at higher risk for major bleeding.

19 Jan 2009

Gene switch sites found mainly on 'shores,' not just 'islands' of the human genome

Scientists who study how human chemistry can permanently turn off genes have typically focused on small islands of DNA believed to contain most of the chemical alterations involved in those switches.

19 Jan 2009

Three new genetic variations that increase the risk of obesity

The gene variant most strongly associated with childhood obesity and adult morbid obesity in the study is located near the PTER gene, the function of which is not known. This variant is estimated to account for up to a third of all childhood obesity, and a fifth of all cases of adult obesity.

19 Jan 2009

Kidney transplant survival can be long-term for people with HIV

A Johns Hopkins study finds that HIV-positive kidney transplant recipients could have the same one-year survival rates for themselves and their donor organs as those without HIV, provided certain risk factors for transplant failure are recognized and tightly managed.

19 Jan 2009

Relaxation helps keep that weight off

Researchers in New Zealand have found that the key to maintaining a weight loss might be relaxation.

19 Jan 2009

New clot-buster found

Exciting research into blood clotting by British Heart Foundation (BHF) researchers working at the University of Bristol will take us a step closer to better heart attack prevention and treatment.

19 Jan 2009

Seasonal variation in blood pressure

A French study reported in the 12th January issue of Archives of Internal Medicine has found a strong correlation between blood pressure and outdoor temperature in a large sample of the elderly.

19 Jan 2009

Psychological concerns are greatest barriers to an active lifestyle

The main factors influencing the amount of physical exercise people carry out are their self-perceived ability and the extent of their desire to exercise.

19 Jan 2009

Potential new biomarker for colon cancer

Cincinnati scientists have identified a new biomarker that could help predict a person's risk of developing colon cancer and how aggressive it may become.

19 Jan 2009

Socially stable individuals delay seeking help for alcohol problems

People with a stable psychosocial life situation often delay in seeking help for their alcohol problems - even though they are serious.

19 Jan 2009

Researchers find novel use for old compound in cancer treatment

The compound, alpha-difluoromethylornithine or DFMO, targets the activity of a specific enzyme and, even in very limited doses, is effective in protecting against the malignancy in animal models.

19 Jan 2009

New understanding on how aging causes broken bones to heal slowly

Researchers have unraveled crucial details of how aging causes broken bones to heal slowly, or not at all, according to study results published today in the Journal of Bone and Mineral Research.

19 Jan 2009