Penn researchers discover pathway that eliminates genetic defects in red blood cells
...ill increase our knowledge of how these cells make high levels of hemoglobin and how defects in this system could contribute to genetic disorders and possibly be reversed. This type of surveillance pathway that is regulated at the tissue level could also exist in other highly specialized cells, says fir...JCI table of contents: August 1, 2007
...ne when red blood cells die The accumulation of high levels of oxidants in red blood cells dramatically... of Medicine, New York, show that the induction of high levels of oxidants in mice lacking Foxo3 caused them to die rapidly. Red blood cells from these mice...Molecule blocks gene, sheds light on liver cancer
...ncer develop. This molecule occurs at unusually high levels in many kinds of cancer cells. The study lo...State University Medical Center. They show that high levels of miR-21 block the PTEN gene, he explained. This, in turn, activates chemical pathways that ...Measuring nectar from eucalypts
...pickers, flowers in forest canopies over 30 metres high on the NSW south coast were accessed. Nectar in flowers bagged overnight was measured to determine how much nectar they produce. Both large and small trees were measured in forest with different logging histories: recently logged, regrowth and matu...Testing the force of a shark's bite
...d feeding behaviour in the Great White Shark using high resolution 3-D computer simulations. Last week Dr Wroe and his team dissected the five year old shark and measured the structure of its jaw and the muscles used in biting. Underwater experiments with live sharks fail to adequately indicate the fo...Particle emissions from laser printers might pose health concern
...a classified 17 out of 62 printers in the study as high particle emitters because they released such elevated quantities of particles, which the researchers believe to be toner, the ultrafine powder used in laser printers instead of ink to form text and images. One of the printers released particles into ...Nanotechnology helps scientists make bendy sensors for hydrogen vehicles
...sing devices using a two-step process separated by high and low temperatures. First, at around 900 degrees... exhibit excellent sensing performance in terms of high sensitivity, fast response time and quick recovery, and the use of plastic sheets reduces their over...High rates of HIV infection documented among young Nepalese girls sex-trafficked to India
...eport by the Congressional Research Service. The high rates of HIV we have documented support concerns t...ggest several likely explanations for the observed high risk for HIV infection among the youngest trafficked girls. Previous research on male brothel client...Chickens dieting to help Delaware waterways
...ls, including rabbits, sheep and chickens. After high school, he headed to Penn State, where he received his bachelor's degree in dairy science, master's degree in animal nutrition and then a doctorate in poultry nutrition. There are a lot of good people working in poultry to address the phosphorus is...Stem cell therapy rescues motor neurons in ALS model
...s afflicted with a form of ALS. "GDNF has a very high affinity for motor neurons in the spinal cord," says Svendsen. When implanted, "the (GDNF secreting) cells survive beautifully. In 80 percent of the animals, we saw nice maturing transplants." The implanted cells, in fact, demonstrated an affinity ...Reading ability protects brain from lead exposure
...r. The workers were then divided into groups with high cognitive reserve, defined as a reading level of 1... American Academy of Neurology. This suggests that high cognitive reserve has a protective effect that allowed these workers to maintain their functioning, ...Injection drug use and HIV and HCV infections among Ontario prison inmates
... much higher than that of HIV infection. Given the high rates of recidivism and the short stays in remand facilities and provincial prisons, the results of these studies have important public health implications and point to the need for preventive measures. In this Ontario study, Dr. Liviana Calzavara...Injection drug use the most important risk factor for HIV and HCV infections among Quebec prisoners
... much higher than that of HIV infection. Given the high rates of recidivism and the short stays in remand facilities and provincial prisons, the results of these studies have important public health implications and point to the need for preventive measures. In the Quebec study, Dr. Cline Poulin and co...New research identifies anti-viral protein that may predict who might be at risk to develop lupus
...The researchers found that when an SLE patient had high blood levels, so did many of their healthy first d...rst degree relatives of patients with SLE that had high interferon-alpha levels, says Timothy Niewold, M.D., first author of the study and a former rheumato...Isoprene emission from plants -- a volatile answer to heat stress
...rene is a hydrocarbon volatile compound emitted in high quantities by many woody plant species, with signi... protecting the leaves from the harmful effects of high ambient temperature. How does isoprene confer heat tolerance? Does isoprene act as an antioxidant ...Strength of connections between brain regions may affect an adolescent's response to peer influence
... behavior are more interconnected in children with high resistance to peer influence than those with low r... Paus and his team observed 35 10-year-olds with high and low resistance to peer influence, as determined by a questionnaire. The researchers then showed ...$9M grant awarded to University of Cincinnati for bipolar disorder research
...sed energy, activity and restlessness, excessively high or overly euphoric mood, and extreme irritability. In contrast, a depressive episode is characterized by a lasting sad, anxious, or empty mood, feelings of hopelessness or pessimism, and decreased energy. An NIMHsupported study estimates that 1 per...Report recommends off-site disposal of secondary waste
...e on-site capacity is just not enough for treating high volumes of secondary wastes such as carbon, wood dunnage, or protective gear," said committee chair Peter B. Lederman, retired executive director of the Hazardous Substance Management Research Center, Newark, N.J. "Destroying the secondary waste con...A friendly foe -- Bacteria residing in the gut boost immune response to tumors
...ly those that deplete the bodys immune cells, have high potential to disrupt the natural balance between our bodies and these commensal microorganisms, causing disease. Restifo and colleagues subjected mice genetically deficient in lymphocytes to TBI and found that, like TBI-treated mice with intact lymph......ly those that deplete the bodys immune cells, have high potential to disrupt the natural balance between our bodies and these commensal microorganisms, causing disease. Restifo and colleagues subjected mice genetically deficient in lymphocytes to TBI and found that, like TBI-treated mice with intact lymph...