Pollution causes 40 percent of deaths worldwide, study finds
... drug-resistant. And global warming, together with changes in biological diversity, influence parasite evolution and the ability of exotic species to invade new areas. As a result, such diseases as tuberculosis and influenza are re-emerging as major threats, while new threats -- including West Nile virus and...Interaction of just 2 genes governs coloration patterns in mice
...one of the few instances in which specific genetic changes have been linked to an organism's ability to survive in the wild. "Our work shows how changes in just a few genes can greatly alter an organism's appearance," says Hopi E. Hoekstra, John L. Loeb...Bursts of waves drive immune system 'soldiers' toward invaders
...d in neutrophils also controls movement and shapes changes in other cells and organisms. ...Gene regulation, not just genes, is what sets humans apart
... Positive selection, the process by which genetic changes that aid survival and reproduction spread througho... digest carbs down to simpler sugars. Regulatory changes have adapted to changing circumstances without changing the essential chemistry of metabolism, Wray ...High blood pressure, low energy -- a recipe for heart failure
...es that these studies show for the first time that changes in the ability of the heart to produce energy lead to heart failure in some cases. "ERR and some of its partners in the cell are a little like puppeteers controlling the expression of genes for energy production," Kelly says. "This research is especi...Abnormal fat metabolism underlies heart problems in diabetic patients
...hotgun lipidomics provide a precise way to measure changes in heart lipid content," says first author Xianlin Han, Ph.D., assistant professor of medicine. "We found a dramatic depletion of cardiolipin in heart muscle as early as five days after diabetes was induced in mice." "These results suggest that cardi...Rain forest protection works in Peru
...tivities below. The CLAS system can uncover forest changes at a resolution of less than 100 by 100 ft. The core process behind CLAS is an advanced signal processing approach developed by study lead Greg Asner. Our approach has improved over the past eight years, but relies on a core set of methods that ha...Climate change and permafrost thaw alter greenhouse gas emissions in northern wetlands
... to climate change, where typically warming causes changes that release more greenhouse gases, which in turn causes more warming, and more emissions, and so on, she said. But what the researchers actually found is not such a clear-cut climate story. Permafrost collapse in peatlands tends to result i...Genetic variation helps to understand predisposition to schizophrenia
...elopment and is more abundant in fetal brains, DNA changes that alter the expression of this protein may contribute to schizophrenia by modifying the development and wiring of the brain, Law says. By understanding how this novel protein works in the brain, we may be able to target it in people with the disea...1 of deep ocean's most turbulent areas has big impact on climate
... warming, but we dont yet fully understand how the changes will affect society. Our work will result in better models for predicting how the ocean will affect the climate in the future and a better understanding of sea-level rise, weather patterns such as El Nino, and the impact of these events on fisheries....Research shows skeleton to be endocrine organ
...ugar in ways that were not known before completely changes our understanding of the function of the skeleton and uncovers a crucial aspect of energy metabolism, said Gerard Karsenty, M.D., Ph.D., chair of the department of Genetics and Development at Columbia University Medical Center, Paul Marks Professor i...Brain blood flow gives clues to treating depression
...mprovement in depression is accompanied by diverse changes in cerebral blood flow, according to whether patients are treated with medication or electroconvulsive treatment, he noted. We found that antidepressant medicines normalized decreased brain blood flow usually seen in patients with depression, while e...Acute sleep deprivation leads to changes in nighttime urine production for men and women
...elated factors. The mechanism behind the day/night changes is not yet clear. Danish researchers have examined the urinary patterns of sleep-deprived volunteers and have found that a lack of sleep leads to increased urinary output and more salt in urine. The findings were found to be more prevalent in males t...Cardio exercise benefits in male vs. female hearts
... an echocardiograph to better evaluate any cardiac changes during the course of the study. They also isolated... and analyzed the RNA of each mouse to look at any changes at the molecular level. Results The researchers found that the female mice: showed a much ...Study suggests estrogen deficiency can lead to obesity-induced high blood pressure after menopause
...ed estrogen replacement did not undergo any of the changes mentioned above. With increased life expectancy, women spend more than a third of their life in menopause. In addition, obesity is increasing dramatically in all populations and is a major cardiovascular risk factor in women after menopause. Despi...Weizmann Institute scientists discover a control mechanism for metastasis
...eceptor on the cell wall, initiating a sequence of changes in the cellular structure. The cells internal skel... To begin with, the team mapped all of the genetic changes that take place in the cell after the growth factor signal is received. As they sifted through the e...What we can learn from the biggest extinction in the history of Earth
...ortant processes or underestimate the magnitude of changes in the future by using only the past couple thousa...his finding, coupled with geochemical evidence for changes in the relative abundances of carbon isotopes, strongly suggests an acidic marine environment at the......searchers can describe and predict major landscape changes that may affect these migrations. In Landscape analysis and ungulate movement in the Greater Yellowstone Region, Fred Watson (California Stare University, Monterey Bay) will describe research done on bison in Yellowstone National Park. Future di...Preclinical study links gene to brain aneurysm formation
...role in remodeling of blood vessels in response to changes in blood flow. When a vessel experiences increased blood flow, it attempts to reduce the shear stress to even levels by enlarging its luminal caliber through a process known as remodeling. This involves reabsorbing the inner layers of the vessel wa......to examine in detail how elephant seals respond to changes in ocean conditions. Most of what we know abou...nvironment and the prey within it. By monitoring changes in the rate at which seals drift up or down during passive drift dives, the scientists could determi...