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Tiny DNA molecules show liquid crystal phases, pointing to new scenario for first life on earth

A team led by the University of Colorado at Boulder and the University of Milan has discovered some unexpected forms of liquid crystals of ultrashort DNA molecules immersed in water, providing a new scenario for a key step in the emergence of life on Earth.

22 Nov 2007

Higher ozone levels linked to greater heart risk associated with high temperatures

Ozone may prove the key to the link between high temperature and the increased risk of death from heart disease or stroke, suggests research published ahead of print in Occupational and Environmental Medicine .

22 Nov 2007

Family doctors and patients with herpes are poorly informed about the viral infection

Family doctors and patients with herpes are poorly informed about the viral infection, indicate the results of an online survey, published ahead of print in the journal Sexually Transmitted Infections .

22 Nov 2007

Mutant mice could provide genetic clues on human sight loss

Mutant mice could provide genetic clues to understanding incurable human sight loss resulting from retinal degeneration.

22 Nov 2007

First genome sequence of XDR strain of the bacterium Mycobacterium tuberculosis

An international collaboration led by researchers in the US and South Africa today announced the first genome sequence of an extensively drug resistant (XDR) strain of the bacterium Mycobacterium tuberculosis, one linked to more than 50 deaths in a recent tuberculosis (TB) outbreak in KwaZulu-Natal, South Africa.

21 Nov 2007

Doctors may be missing cancers in obese men due to misleading PSA scores

Doctors may be missing cancers in obese men because the telltale blood marker used to detect the disease can be falsely interpreted as low in this population, according to a new study led by Duke Prostate Center researchers.

21 Nov 2007

Early warning for anti-smoking drug Chantix

The drug watchdog in the United States, the Food and Drug Administration (FDA), has expressed concerns regarding the anti-smoking drug Chantix.

21 Nov 2007

New mums short on sleep pile on the pounds

A new study has found that mothers who only manage to get five hours or less sleep each night are three times more likely to hang on to that extra weight gained in pregnancy, while women who slept seven hours a night or more lost more weight.

20 Nov 2007

Impact of sleep deprivation on postpartum weight retention

Mothers who reported sleeping five hours or less per day when their babies were six months old had a threefold higher risk for substantial weight retention (11 pounds or more) at their baby's first birthday than moms who slept seven hours per day, according to a new study by Kaiser Permanente and Harvard Medical School / Harvard Pilgrim Health Care.

20 Nov 2007

Smoking linked to age-related hair loss among Asian men

Smoking may be associated with age-related hair loss among Asian men, according to a report in the November issue of Archives of Dermatology.

19 Nov 2007

Low standards of child well-being linked to greater income inequality

Improvements in child wellbeing in rich countries might depend more on reductions in income inequality rather than further economic growth, according to a study published on bmj.com.

19 Nov 2007

New insight into how cystatin C may lower the risk for Alzheimer's disease

For unknown reasons a protein called amyloid beta aggregates into toxic plaques in the brain, killing neurons.

19 Nov 2007

Study links asthma with post-traumatic stress disorder

For the first time, a study has linked asthma with post-traumatic stress disorder (PTSD) among adults in the community. The study of male twins who were veterans of the Vietnam era suggests that the association between asthma and PTSD is not primarily explained by common genetic influences.

16 Nov 2007