PCB breakdown in rivers depends on sediment-specific bacteria, find Carnegie Mellon U. scientists
...utrients in sediments from contaminated sites with little or no bacterial activity also could reveal ways to transform sites with poor eaters into areas that grow microbes with healthy appetites for PCBs. Ideally, the investigators could identify a combination of nutrients or other factors that could be ad...Penn scientists identify novel pathway in aneurysms
(Philadelphia, PA) Very little is known about how aortic aneurysms initially form and progress. Now, researchers from the University of Pennsylvania School of Medicine have shown in an atherosclerotic animal model that susceptibility for developing aneurysms increases significantl...Evidence for the impact of climate change on deep-sea biodiversity
...fications in biodiversity on the global scale, yet little is known on the impact of recent climate changes on the deep-sea biodiversity. In the forthcoming issue of Ecology Letters, Danovaro, Dell'Anno and Pusceddu demonstrate that an extensive climate anomaly, which occurred in the Eastern Mediterranean, ...Study suggests cell-cycle triggers might be cancer drug targets
...believed essential to cell division and growth had little impact on normal tissue development of a mouse emb... 1995 showing that mice lacking cyclin D1 had very little breast tissue and, when crossed with cancer-prone mice, had offspring that were largely protected ag...Researchers report new gene test for isolated cleft lip and palate
...ray. "That was actually a puzzle and remains so a little bit because it's both the ancestral and common sequence, which is found in 97 percent of Europeans." "What we strongly believe is happening is the valine serves as a marker for some other mutation nearby within the gene that's really doing the deed,"......ut 10 percent of the genes cycled, but most showed little overlap from tissue to tissue. This type of cycling has to do with local physiology -- for instance, the liver's expression of certain enzymes at certain times of the day. What they were really interested in were the overlapping cyclers -- those gene...Embryonic stem cell therapy shows steady benefits in rebuilding infarcted heart
...ng most current therapies to address symptoms with little hope of rehabilitating the injured heart itself after a heart attack (myocardial infarction). The regenerative potential of stem cells in relation to the muscle layer of the heart wall (or myocardium) has been recently recognized, but how this might ...Study narrows search for genes placing men at increased risk for prostate cancer
... other than skin cancer, and we still know far too little about how to prevent it, detect it, and treat it."...Pollination find could lead to cordgrass control
...read further apart. Early-invasion plants received little pollen and made very few seeds. Davis thinks this explains why Spartina covers only 60 of Willapa Bay's 230 acres, despite having been present in the bay for a century. The study's findings are helping biologists devise new strategies to eradicate i...British scientists exclude 'maverick' colleagues, says report
...51; such as the MMR vaccine controversy - has done little to inspire public trust in science." Her research centred on a year-long qualitative study, interviewing some 30 scientists in Britain and Sweden, all working with issues regarding genetic modification. It was funded by the Economic and Social Resea...Using statistics to decipher secrets of natural mutation
...lution," said Green. "However, it's surprising how little is still known about their causes." Previous studies have revealed a number of biases in the rates of different types of mutational change. These arise in part from the innate biochemical characteristics of the four DNA nucleotide units adenine, gu...Alcohol-use and depression among pregnant and postpartum women
...als not in treatment. Furthermore, there has been little research on comorbidity of alcohol use and depression in pregnant and postpartum women. This is unfortunate, as alcohol use and depression during pregnancy can be a marker for women at risk for later difficulties with alcohol and depression, which c...Genes can influence both alcohol consumption and dependence
...t to explore this relationship, which has received little attention in the past because most studies have concentrated on either one or the other." "We have known for some years that there are genetic influences on risk of alcohol dependence, but it has been challenging to separate out the extent of influen...Protective gene may enhance vaccine responses
...tion and differentiation of these T cells but very little about the factors that regulate contraction. In the September, 2004, issue of Nature Immunology published on-line August 15 -- the researchers show that activation of the gene for the Serine protease inhibitor 2A (Spi2A) can prevent the death of T ...Marijuana ingredient inhibits VEGF pathway required for brain tumor blood vessels
...els, or angiogenesis, in laboratory mice. However, little was known about the specific mechanisms by which cannabinoids impair angiogenesis, or whether the chemical might do the same in human tumors. To answer the first part of the question, the scientists induced gliomas in mice, which were subsequently i...Gene changes linked to increased eye pressure may have implications for glaucoma therapy
... could sense an increase in pressure and open up a little bit, to help move the fluid out of the eye," said Borrs. However, it was unclear how the TM achieved this pressure regulation. This study was aimed at measuring what genes were turned on or off in the TM after the pressure was increased, Borrs a...T. rex owes its giant size to the ultimate teenage growth spurt
...rmore, the surge was followed by about 10 years of little or no growth as an adult, according to a study tha...they reached adulthood at 14 to 16 years of age (a little earlier than T. rex). Sue was instrumental in the study, by revealing that she had reached her full ...New hypoxic event found off Oregon coast
...the continental shelf by shifting winds and caused little damage," said Francis Chan, an OSU research associate with PISCO. "Then two months ago, we saw the early signs of another hypoxic event, and we believe we're now in the process of another dead zone event." In the 2002 event, water at depths of 30-50......y, well-camouflaged fish with no apparent head and little room for eyes. The Cornell biologists introduced ...ir disproportionately big eyes gaze out from those little round faces. By three months, our eyes are as big as they'll ever be -- at least from outward appear......clinically significant human envenoming cause very little mortality or severe morbidity. Scorpions are responsible for a far greater burden of illness worldwide. In Australia and the USA, bee and wasp stings account for many more deaths than spider bites. Spiders can also be compared with cars. The fear of ...