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278,967 articles from PhysOrg

Gene activity reveals dynamic stroma microenvironment in prostate cancer

As stroma - the supportive framework of the prostate gland - react to prostate cancer, changes in the expression of genes occur that induce the formation of new structures such as blood vessels, nerves and parts of nerves, said researchers at Baylor College of Medicine in a report that appears in the current issue of the journal Clinical Cancer Research.

Is this the beginning of the end of plant breeding?

No human is a clone of their parents but the same cannot be said for other living things. While your DNA is a combination of half your mother and half your father, other species do things differently. The advantage of clonal reproduction is that it produces an individual exactly like an existing one -which would be very useful for farmers who could replicate the best of their animals or crops...

Nightmares predict elevated suicidal symptoms

Self-reported nightmares among patients seeking emergency psychiatric evaluation uniquely predicted elevated suicidal symptoms. Results indicate that severe nightmares were independently associated with elevated suicidal symptoms after accounting for the influence of depression, whereas symptoms of insomnia were not. These findings suggest that nightmares stand alone as a suicide risk factor.

Study links primary insomnia to a neurochemical abnormality

A research abstract that will be presented at SLEEP 2009, the 23rd Annual Meeting of the Associated Professional Sleep Societies, is the first demonstration of a specific neurochemical abnormality in adults with primary insomnia (PI), providing greater insight to the limited understanding of the condition's pathology.

Computer-related injuries on the rise

While back pain, blurred vision and mouse-related injuries are now well-documented hazards of long-term computer use, the number of acute injuries connected to computers is rising rapidly. According to a study published in the July 2009 issue of the American Journal of Preventive Medicine, researchers from the Center for Injury Research and Policy and The Research Institute at Nationwide...

Cardiac rehabilitation saves lives

Coronary heart disease (CHD) is the leading cause of death worldwide and a major driver of medical and economic costs, especially among older adults. It has long been established that cardiac rehabilitation improves survival, at least in middle-aged, low- and moderate-risk white men. Now a large Brandeis University-led study published in the Journal of the American College of Cardiology reports...

Let me sleep on it: Creative problem solving enhanced by REM sleep

Research led by a leading expert on the positive benefits of napping at the University of California, San Diego School of Medicine suggests that Rapid Eye Movement (REM) sleep enhances creative problem-solving. The findings may have important implications for how sleep, specifically REM sleep, fosters the formation of associative networks in the brain.

Research reveals how cells tell time

The fuzzy pale mold that lines the glass tubes in Dr. Yi Liu's lab doesn't look much like a clock. But this fungus has an internal, cell-based timekeeper nearly as sophisticated as a human's, allowing UT Southwestern Medical Center physiologists to study easily the biochemistry and genetics of body clocks, or circadian rhythms.

Researchers identify structure of bacteria responsible for traveler's diarrhea

Researchers at Boston University School of Medicine (BUSM), the Naval Medical Research Center and the National Institutes of Health, have solved the structure of thin hair-like fibers called "pili" or "fimbriae" on the surface of bacteria that cause traveler's diarrhea. The findings, appear in the June issue of the Proceedings of the National Academy of Sciences, and have important implications...

Snakes use friction and redistribution of their weight to slither on flat terrain

Snakes use both friction generated by their scales and redistribution of their weight to slither along flat surfaces, researchers at New York University and the Georgia Institute of Technology have found. Their findings, which appear in the latest issue of the Proceedings of the National Academy of Sciences, run counter to previous studies that have shown snakes move by pushing laterally against...

Unexpected discovery can open a new chapter in the fight against tuberculosis

A close relative of the microorganism that causes tuberculosis in humans has been found to form spores. This is a sensational finding because researchers have long been convinced that these kinds of bacteria-the mycobacteria-were incapable of forming spores. Leif Kirsebom's research group at Uppsala University now has photographic proof, obtained while working with the bacteria that causes...


MONDAY 8. JUNE 2009


An estimated 4 percent of older US men have dry eye disease

Dry eye disease is common among American men older than 50 and increases with age, high blood pressure, benign prostate disease and the use of antidepressants, according to a report in the June issue of Archives of Ophthalmology, one of the JAMA/Archives journals.

Apple drops price of least expensive iPhone to $99

(AP) -- Apple Inc. slashed the entry price for an iPhone in half and rolled out new laptops for $300 less than previous models Monday, the company's first dramatic price cuts since the recession began a year and a half ago.

Boys with intermittent eye deviation appear more likely to develop mental illness

Children and especially boys diagnosed with intermittent exotropia, a condition in which the eye turns outward (away from the nose) only some of the time, appear more likely to develop mental illness by young adulthood than children without strabismus (when the eyes deviate or are misaligned when looking at an object), according to a report in the June issue of Archives of Ophthalmology, one of...