Researchers found that males' simpler genetic architecture enables them to evolve faster and more efficiently in response to sexual selection. This is because males have only one X chromosome, making their inheritance pathway less complicated compared to females, who have two X chromosomes with interacting genes.
A team of Dartmouth Medical School researchers found that low doses of arsenic disrupt the activity of hormone receptors critical in development, highlighting the potential harm of arsenic at levels found in U.S. drinking water. The study's findings provide evidence for mitigating arsenic's impact on human health.
The system uses speech recognition and language processing technology to create transcripts of MIT lectures, allowing users to search for specific topics. The prototype web site has drawn increased traffic, primarily from international students accessing MIT's OpenCourseWare initiative.
NASA Goddard's method for producing high-quality carbon nanotubes has been recognized as a winner in the Nano 50 awards. The technology eliminates the need for metal catalysts, resulting in safer and less expensive production methods.
A study published in Neurology found that Latinos and African Americans with Alzheimer's disease lived significantly longer than white individuals. The study involved nearly 31,000 participants and adjusted for various factors, including education level and age when symptoms began.
A new study predicts a 10-fold increase in ADHD prescription costs for the NHS, rising from £7m to £49-101m by 2012. The research modelled various scenarios and considered factors such as drug availability, diagnosis rates, and treatment levels.
A team of researchers proposes a new mechanism to explain the brightest ever recorded supernova, SN 2006gy. The model suggests that an extremely massive star undergoes repeated explosions, resulting in a display up to 100 times more luminous than usual.
A study by Yale researchers suggests that YKL-40 may play a role in severe asthma, with elevated levels correlating to increased inflammation and lung function. The discovery brings hope for developing a blood test to identify patients with severe asthma, which affects 2.5 million Americans.
A gene in male cichlid fish produces yellow pigment cells on oval spots, attracting female fish. The fish engage in an exotic oral mating behavior, where males deposit sperm in the females' mouths after she picks up eggs.
Scientists have created a human embryonic stem cell line from an embryo with the fragile X mutation, revealing early events associated with the disease. The study suggests that preventing epigenetic modifications may help rescue abnormal cells, paving the way for new therapeutic strategies.
Researchers from Baylor College of Medicine found that viral infections like poliovirus target a protein called G3BP, which helps cells respond to stress. This disruption prevents the virus from being translated into proteins and killing the cells.
Researchers at Cold Spring Harbor Laboratory have identified a new class of long short interfering RNAs (lsiRNAs) in Arabidopsis that are induced by bacterial infection or specific growth conditions. These lsiRNAs have unique biogenesis and target degradation pathways, suggesting they may play important roles in host immunity.
A new biodiversity survey reveals that primary rainforests are home to over half of all terrestrial species, with many species found nowhere else. The study emphasizes the need for conservation and sustainable land-use practices, highlighting the importance of protecting large areas of intact forest habitat.
The first 'State of the Carbon Cycle Report' reveals a troubling imbalance in North America's carbon budget, largely driven by human-caused emissions. The continent's natural sinks, such as forests and soils, may be unable to compensate for increasing carbon dioxide emissions.
Professor Paul J.J. Welfens has received the economics prize from the Russian Academy of Sciences for his work on macro-economic theory and policy. He specializes in these areas at Wuppertal University's Department of Economics.
Researchers found that silibinin reduces cancer cell proliferation and enhances programmed death of cancer cells, making it a potential treatment option. The study also suggests that other herbal supplements may have similar anti-tumor effects, warranting further investigation.
A study by UT Southwestern Medical Center researchers found that the hormone orexin activates HIF-1, which increases energy production in cells. This activation is linked to the body's response to low blood sugar and hunger, suggesting a new mechanism for metabolic regulation.
Researchers developed a new indicator, Hb-Var, measuring hemoglobin level stability in dialysis patients, finding it strongly predicts mortality risk. Higher Hb-Var scores associated with increased death rates, even after adjusting for absolute hemoglobin levels and trends.
A study by University of California, Irvine researchers found that low doses of freeze-dried grape powder inhibit genes linked to sporadic colorectal cancer. The study suggests a diet rich in grapes may help prevent colon cancer, which kills over half a million people worldwide each year.
Researchers directly observed how water molecules link with proteins, enabling movement and function. The study challenges conventional wisdom and provides new insights into protein-water interactions.
The NASA SORCE mission is tracking regional variations in the sun's warming impact on Earth, with possible implications for global climate patterns. The study found that while the sun's brightness affects Earth's temperature modestly, regional temperature changes can vary by a factor of eight.
A survey of clinical scientists reveals that the HIPAA Privacy Rule has a negative influence on health research, causing uncertainty, increased costs, and delays. The study found that researchers believe the rule adds significant complexity to their work, compromising participant confidentiality.
A virtual simulation study by Florida Institute of Technology doctoral student Zeeshan-ul-hassan Usmani reveals that circular crowd formations lead to high injury rates, while vertical rows provide the safest positioning. The findings may have implications for emergency response and counter-terrorism activities.
A study found that hospitals with higher lymph node examination rates did not see better patient survival after colon cancer surgery. The rate of detecting node-positive tumors remained the same across all hospital groups.
A new model for predicting breast cancer risk in postmenopausal women is as accurate as the Gail Model, but easier to use. The model uses only three factors: age, family history of breast cancer, and previous breast biopsy.
A study of nearly 2,500 youths found that playing multiple violent video games increased aggressive behaviors and hostile attribution bias. The researchers identified seven parallels between video games and effective teaching methods, including adaptability to individual learners and teaching for real-world situations.
A new study found that experienced ultrasound examiners can accurately classify ovarian tumors using pattern recognition, outperforming blood test CA-125 levels. The method could improve diagnosis and treatment for women with ovarian cancer.
Researchers found no link between the reg1 gene and pancreatic stone formation in patients with tropical calcific pancreatitis. The study suggests alternative mechanisms, such as calcium signaling, may be involved in stone formation.
Researchers have found a way to help health-care providers and social workers understand the stages that abused women go through when deciding to leave their partners. The study identifies five stages, including precontemplation, contemplation, preparation, action, and maintenance, with key turning points for women's empowerment.
Andrew P. Goldberg, a renowned expert in aging research, receives the 2007 Joseph T. Freeman Award for his contributions to exercise, diet, and metabolism in aging. The award ceremony will take place at GSA's Annual Scientific Meeting in San Francisco, where Goldberg will present a lecture on his work.
Researchers found that gene signatures can predict which chemotherapy regimens are most effective for breast cancer patients. The study showed a significant improvement in response rates when using gene signatures to select treatments, suggesting a potential breakthrough in personalized medicine.
Researchers found that the Wwox protein keeps ErbB-4 on the cell surface, associated with better survival in breast-cancer patients. The absence of Wwox is linked to shorter survival, particularly in triple-negative breast cancers.
Lynn M. Martire of the University of Pittsburgh has been awarded the 2007 Margret M. & Paul B. Baltes Foundation Award for her outstanding research on interplay of social roles, stress, and health in aging. The award highlights her work on dyadic psychosocial interventions and late-life depression's impact on family members.
Research reveals MMP-1 and TNF-alpha play a central role in ulcerative colitis development, offering new therapeutic targeting proteins. Agents like Infliximab have shown promise in treating adult and child patients with ulcerative colitis.
The Gerontological Society of America has awarded USC's Mara Mather the 2007 Richard Kalish Innovative Publication Award for her groundbreaking research on memory in older adults. Her work challenges traditional notions of memory as an exact photograph, highlighting the role of cognitive control in emotional memory.
Researchers have developed a new method for bacterial hydrogen production, achieving high yields and efficiency. The process uses microbes to extract energy from organic matter, producing clean hydrogen gas with an overall efficiency better than 80 percent.
Researchers discovered that abnormal glutamine repeats interfere with key transcription factor TBP, leading to neurodegeneration in PolyQ diseases. The study provides insight into the molecular mechanisms underlying these inherited disorders.
Researchers found that skeletal myoblasts can help improve urinary incontinence in female rats with urethral sphincter deficiency when transplanted into their nerve-damaged muscles. The transplanted muscle cells increased urethral pressure, leading to significant improvement in incontinence and near-normal urethral closure pressures.
Researchers found that ancient retroviruses helped shape p53, a master gene regulator in primates, by inserting DNA sequences and rearranging the genome. This discovery provides new insights into how gene regulatory networks evolved in humans and other primates.
A Queen's University study confirms Darwin's controversial theory that different species can arise unhindered in the same place. Researchers found that tropical seabirds time-share breeding sites, differing genetically over long periods of time, shedding light on species divergence.
Nancy Whitelaw of NCOA has been recognized with the GSA's 2007 Maxwell A. Pollack Award, which honors individuals who bridge research and practice in aging. The award aims to promote evidence-based programs for older adults, building on her work creating the Center for Healthy Aging.
The Gerontological Society of America has recognized Spero M. Manson and Marcia M. Ory for their significant contributions to fostering excellence in gerontology through mentoring and inspiration. The award is given to individuals who have made a major impact on the field, inspiring students and colleagues alike.
LA BioMed researchers found that African-Americans and Latinos responded less well to medication for depression than whites, with socioeconomic factors playing a key role. The study suggests these groups may need more treatment beyond medication, including talk therapy.
A comprehensive review by the UK National Health Service found that PET scans can help diagnose and treat certain types of cancer more accurately than other imaging technologies. However, it is unclear whether these advances lead to improved patient outcomes and survival rates.
Researchers developed a microfluidic device that reveals how bacteria organize to form antibiotic-resistant biofilms, which play key roles in cystic fibrosis and urinary tract infections. The study's findings could help develop new treatments and preventive measures for these diseases.
Rita B. Effros receives the 2007 Robert W. Kleemeier Award from the Gerontological Society of America for her pioneering work on T cell senescence and telomerase-based therapies. The award recognizes her contributions to advancing the study of aging.
The NIH has provided over $9 million to fund 10 Science Education Partnership Awards (SEPA) to stimulate curiosity and encourage scientific investigation through hands-on activities. The program aims to improve public understanding of NIH-funded medical research and encourage young people in science careers.
A study by Purdue University found that citrus juices and vitamin C enable more of green tea's unique antioxidants to remain after digestion. The researchers discovered that lemon juice had the most profound impact, followed by orange, lime, and grapefruit juices.
Researchers create ways to visualize and analyze unstructured data, assigning brightness, color, and texture to identify potential threats. This technology can automatically recognize patterns and detect unexpected connections between data points.
The study found that a subtle disorder in optimal systemic hyperdynamic state influences portal venous flow, which is crucial for liver regeneration after LDLT. Maintaining an ideal systemic hemodynamic state ensures sufficient splanchnic blood flow and excellent clinical outcomes in cirrhotic LDLT recipients.
Research on DNA structures and electronic properties aims to create ultra small computers. The study found that intrinsic guanine rich sequences of ?-DNA exhibited length-dependent conductivity, providing insights into electrical behavior and potential modification.
Researchers at M. D. Anderson Cancer Center have identified a tumor-suppressor gene that suppresses lung tumors in mice and could provide new approaches for lung cancer prevention, diagnosis, and treatment. The GPRC5A gene is under-expressed in human lung cancer cells and its expression was found to be lower in 61% of human non-small c...
A recent Temple University study reveals that children who experience neglect are more likely to become obese. The research found that neglect can lead to increased stress levels in children, which may affect their eating habits and physical activity.
Researchers at the University of Granada have developed a new system to diagnose pulmonary hypertension earlier. The system uses ultrasound technology and measures pulmonary artery systolic pressure, allowing doctors to identify the condition before it becomes irreversible.
A new model for predicting estrogen receptor-positive breast cancer risk in postmenopausal women performs almost as well as the standard Gail model and could be used to identify high-risk women. Smoking is associated with rectal cancer, while drugs like ZD6126 may cause heart damage due to cardiovascular changes.
A rare case of antegrade bowel intussusception after pancreatic duct reconstruction was reported, leading to a diagnosis of severe variant of Roux-en-Y stasis syndrome. The patient had previous episodes of abdominal pain and vomiting suggesting altered intestinal motility.
A University of California, Irvine study found that language barriers between patients and healthcare providers lead to longer hospital stays, more medical errors, and lower patient satisfaction. Patients who spoke directly with their doctors were most satisfied with their care.
A low-carb diet may help stunt prostate tumor growth by reducing insulin production, according to a new study. The study found that mice on a low-carb diet had longer survival and smaller tumors than those on other diets.
Linda R. Phillips, a renowned nurse scientist, receives the 2007 Doris Schwartz Gerontological Nursing Research Award for her sustained contributions to improving the lives of older people. Her research focuses on family caregiving, abuse, and nursing interventions to enhance caregiving quality.
Nancy L. Pedersen of Karolinska Institutet will receive the GSA's 2007 Award for her contributions to behavioral genetics and aging research. Her work, including leadership of the Swedish Twin Registry, has significantly advanced our understanding of genetic and environmental factors in aging.