A study of 93 women at Ohio State University Medical Center found no correlation between the frequency of sexual intercourse and the onset of labor. Women who were sexually active during the final weeks of their pregnancies carried their babies an average of 39.9 weeks, compared to 39.3 weeks among those who abstained from sex.
A new study analyzed national surveillance data and found that widespread adoption of highly active antiretroviral therapy (HAART) led to at least 3 million years of life saved in the US. The study suggests that reducing barriers to care, such as pre-test counseling, could lead to even greater benefits.
Researchers found that withdrawal contributes to compulsive drug consumption in addicts, creating a vicious cycle. A previously unknown source of drug craving was also identified through Pavlovian conditioning.
A team of scientists from Ohio State University has discovered a massive crater, hidden beneath the East Antarctic Ice Sheet, which could date back to the Permian-Triassic extinction event. The crater is estimated to be four times wider than the Chicxulub meteor that may have killed the dinosaurs.
Researchers identify a previously unrecognized link between mid-latitude climate dynamics and tropical African climate, leading to exceptionally high organic carbon burial. The study suggests that changes in atmospheric pressure systems and surface winds drive variations in precipitation and runoff patterns.
A survey found that many people do not look at food labels or understand the calorie information they contain, which may limit the effectiveness of nutrition labeling legislation in combating obesity. A high-fiber diet was also found to be associated with normal body fat stores and standard weight for height in adults.
Researchers genetically removed checkpoint proteins in nematode worms, resulting in a 15-30% increase in lifespan. This discovery suggests that these proteins have a dual function in both dividing and non-dividing cells, influencing both aging and cancer.
Researchers have found that pairing Tarceva with Celebrex significantly increases response rates in lung cancer patients, offering a potential breakthrough in treating the disease. The combination therapy has shown to increase response rates by about three-fold, with some patients experiencing responses for up to 93 weeks.
The study found that nearly 9 in 10 amputations performed are instigated by an infection. Poor circulation was not the primary cause of amputation but rather determined its level, highlighting the importance of preventing infection to prevent severe outcomes.
Scientists have discovered a rubble-pile asteroid, Itokawa, with a sea otter-like shape, consisting of loosely packed and porous rubble. The asteroid's structure provides critical information on its early evolution and potential threats to Earth.
The Howard Hughes Medical Institute (HHMI) has awarded $86.4 million to 50 US universities to enhance undergraduate science education and promote diversity in the sciences. The grants will support programs that develop novel courses, provide hands-on research experiences, and increase science literacy among non-science majors.
The International Society for Influenza and other Respiratory Diseases has launched a new journal, Influenza and Other Respiratory Viruses, with renowned influenza expert Alan Hampson at the helm. The journal aims to bring together international knowledge and expertise in combating the global threat of an influenza pandemic.
Researchers used RNA interference to silence genes regulating muscle cell formation and osteogenic signals. The study found that turning off these inhibitors increased the cells' bone-forming potential, with 60% of mice developing radiologically detectable bone after implantation.
Researchers have discovered a connection between a protein that prevents cancer in humans and lifespan in nematode worms, suggesting that this protein may determine how long we live. The 'checkpoint proteins' also appear to play a role in cell division and could be used to develop new strategies for treating neurodegenerative diseases.
A Romanian study reveals that children born after an abortion ban had significantly better educational outcomes, finishing high school and working in advanced jobs. The study attributes this positive effect to changes in the composition of women having children, particularly among urban and educated mothers.
The 2007 Nieman Fellowship in Global Health Reporting is awarded to David Kohn, Harro Albrecht, and Kondwani Munthali for a year of study at Harvard School of Public Health. After completing their studies, the fellows will embark on four-month journalistic field work in developing countries.
Researchers found that developmental red flags, such as poor eye contact and language delay, can be identified at 14 months and worsen by 24 months. Early intervention could improve outcomes for children with autism.
A Florida State University researcher is creating unmanned ground vehicles to patrol areas without putting soldiers in harm's way. The Center for Intelligent Systems, Control, and Robotics is also working on algorithms that enable autonomous devices, such as wheelchairs and self-parking cars.
Researchers investigate the effects of hypoglycemia on insulin therapy in type 1 diabetes and discover a potential solution using urocortin I. Urocortin I suppresses the counterregulatory response to low blood sugar, impairing glucose-sensing neurons in the brain.
Ewing's sarcoma treatment strategy proposed by Georgetown University Medical Center researchers, targeting EWS-FLI1 and helicase protein interaction to promote cancer development.
A study of 96 liver transplant patients found that 66% were fatigued, with physical fatigue and reduced activity being the primary concerns. Rehabilitation programs focusing on improving activity patterns and physical fitness may help alleviate fatigue after liver transplantation.
The study reveals a diverse population of over 60,000 genes in the human colon microbiome, including enzymes that help humans digest food. The findings suggest that bacteria in the colon co-evolved with their human host, contributing to our well-being and potentially leading to diseases like inflammatory bowel disease.
Researchers at New Mexico State University offer a new approach to understanding desertification by studying past events, environmental factors, and soil properties. Their six-step scheme integrates information from broad scale to fine scale to determine the most important influences.
Asteroid Itokawa is found to be a rubble pile, providing valuable clues on how the planets were formed. The confirmation has significant implications for theories of asteroid evolution and will lead to a better understanding of the early solar system.
The USC/Duke team has made significant improvements in controlling light pulses, achieving a slowdown of up to 20-fold increase over previous methods. By using a simple optical fiber and exploiting the Brillouin effect, they can potentially accommodate higher data rates and enable more efficient processing with photonics.
New findings of myglobin levels in the common carp could help scientists understand how humans could survive loss of oxygen supply to their tissues during a stroke or heart attack. The research suggests that the protein plays other roles in protection from low levels of oxygen, apart from storing oxygen.
Researchers at Harvard Medical School have defined a molecular signaling pathway linking oxidative stress to cell death in brain neurons. The discovery of the MST-FOXO biochemical switch mechanism may provide potential new targets for the diagnosis and treatment of age-related diseases such as Alzheimer's.
The US Senate has passed a bill allowing unlimited foreign nurses to work in the country. The move aims to address the ongoing nursing shortage, but critics argue it is a temporary fix that neglects funding local workforce development and fair compensation for countries supplying nurses.
Researchers have discovered electric fish in Africa with the same DNA but different electric signals and appearances, sparking hope that they are on the verge of forming two separate species. The findings provide a rare example of sympatric speciation, where animals from the same geographic location diverge into distinct groups.
The Pauletta and Denzel Washington Family Gifted Scholars Program in Neuroscience awards $2,500 monthly support to graduate researchers and $2,000 per month to undergraduate students. The program aims to train the next generation of life scientists and promote significant contributions in the sciences.
Dr. Hammarskjold's team reveals WT1(+KTS) promotes translation by facilitating mRNA transport and stability, highlighting links between transcription and post-transcriptional gene regulation. The study's findings suggest a crucial role for alternative splicing in regulating genes like WT1 during normal development and disease.
A team of researchers led by UB microbiologist Steven R. Gill analyzed the DNA of microbes in the human distal gut using metagenomics. The study found significant differences between two microbial communities from healthy individuals, highlighting the importance of understanding the interactions between human and microbial genomes.
Chemists have synthesized a new species of iron, designated as iron VI, which has two valence electrons and is highly reactive. This discovery adds to our understanding of fundamental iron chemistry and its catalytic properties, potentially leading to novel compounds for industry and biomedicine.
A study analyzing data from over 7,250 patients in Zurich found a significant decrease in new heroin users between 1990 and 2002. The incidence of heroin use dropped from 850 to 150, while the overall number of heroin dependents only declined by 4% per year.
Researchers found evidence of ancient fig domestication at Gilgal I site, suggesting humans selectively propagated a parthenocarpic mutant around 11,400 years ago. This marked the beginning of agriculture and a significant change in human history.
Having any degree of impaired heart function may be an independent risk factor for ischemic stroke. Mild LVD is present in 3-6% of the general population and increases stroke risk more than three-fold in men and almost five-fold in women.
Long-term cancer survivors experience ongoing concerns about cancer recurrence and treatment side effects, affecting their mental health. Research found that these worries are linked to depression and anxiety, with varying levels of concern across different types of cancer.
The Infectious Diseases Society of America calls for routine HIV testing to identify those who need treatment. Early testing and connection with care can save millions more lives beyond the three million already saved through antiretroviral therapy.
A study in Queensland, Australia found that Indigenous patients had lower survival rates and fewer cases of early-stage cancer compared to non-Indigenous patients. The researchers highlight the need for holistic and culturally respectful approaches to address these disparities.
Researchers discovered that eliminating checkpoint proteins in microscopic worms increased their lifespan by 15-30%. This finding raises questions about the potential link between genetic variations in checkpoint proteins and cancer risk in humans. The study opens new avenues of inquiry into aging and cancer prevention.
Asteroid Itokawa's surface composition was determined by Brown University researcher Takahiro Hiroi, who linked it to LL chondrites, a common class of stony meteorites. The team also described the asteroid's diverse terrain, suggesting it may be an earlier stage of asteroid evolution and formation.
A recent study found that women who have undergone Female Genital Mutilation (FGM) are more likely to experience difficulties during childbirth and their babies are at a higher risk of death. The study also estimated that in the African context, an additional one to two babies die per 100 deliveries due to FGM.
Researchers found that magnetic waves propagate simultaneously in all directions in a Bose Einstein condensate state at high magnetic fields and low temperatures. The discovery reveals a 'lost dimension' effect due to atomic behavior in quantum states.
A study of 321 Finnish parents found that both active and passive TV viewing were associated with shorter sleep duration and increased sleeping difficulties. High levels of passive exposure to TV, especially adult-targeted programs, were strongly linked to sleep disturbances.
Researchers found that intermittent stresses like high blood pressure cause cardiac abnormalities before the heart enlarges. Exercising mice showed enlarged hearts without damage, while hypertensive mice exhibited structural and cellular changes early on.
Rice University's new global health program aims to equip students with the skills to tackle complex health issues in developing countries, including poverty, access to medicine, and cultural factors. The $2.2M grant will support undergraduate engineering students in designing solutions to these problems.
The 'brain-chip' from Martinsried allows biophysicists to visualize the influence of pharmaceutical compounds on neural networks. This breakthrough enables a novel test system for brain and drug research, advancing neurochip prosthetics and neurocomputation.
Daniel Zheng won the SIAM award for his project on the long-term effects of smoking on Down Syndrome. His project demonstrated a wide range of skills and techniques, impressing judges with its mathematical model and motivations.
Scientists at the University of Manchester have identified a previously unknown mechanism by which glucose blocks brain cells responsible for regulating wakefulness. This finding has implications for understanding and treating disorders such as narcolepsy, obesity, and addiction.
A recent study has identified a hormone called juvenile hormone that inhibits the growth of imaginal discs in insects, which can have implications for understanding cancer treatment and long-term effects of early infant malnutrition. Without this hormone, the discs can form and grow at the expense of the rest of the animal.
A study by Joslin researchers found that the PKC-beta enzyme is responsible for fluid retention and weight gain associated with popular type 2 diabetes drugs. The study suggests a potential treatment using PKC-beta inhibitors to prevent these side effects.
A study found that urocortin I impairs glucose-sensing neurons, leading to prolonged hypoglycemic responses. The regulation of the counterregulatory response is largely determined by CRFR2-mediated suppression and CRFR1-mediated activation in the hypothalamus.
A study by UT Southwestern Medical Center found that elevated TVs are a significant hazard for children, with 85% of parents unaware of the potential danger. The researchers recommend manufacturers include securement devices and labels on TVs to prevent toppling, as well as public awareness campaigns.
Dr. Meadows is nationally recognized as an expert in the after-effects of children's cancer, having conducted pioneering research on late effects of childhood cancer. Her studies showed that brain radiation damaged cognitive development and increased risk of later brain cancer.
Researchers observe dimensional reduction in Han purple pigment at low temperatures, which affects magnetic waves' behavior and could aid understanding of quantum computers. The discovery provides insights into the quantum mechanics of the universe, potentially explaining mysterious properties of other materials.
Researchers at Cornell University have discovered how bacteria sense their environments through a cooperative lattice of receptors on the surface of bacterial cells. This sensitivity allows bacteria to detect even slight changes in nutrient concentration, enabling them to respond to stimuli such as pollutants or explosives.
A recent WHO study found that female genital mutilation (FGM) is associated with a higher risk of baby loss and complications during childbirth, including prolonged hospital stays. The study analyzed data from over 28,000 women across six countries in Africa.
A study found that early exposure to estrogen or BPA increases the risk of precancerous lesions in the prostate. Researchers discovered that this leads to epigenetic reprogramming, altering gene expression patterns that promote prostate disease with aging.
A recent study by Cornell University researchers found that acid rain is causing a decline in sugar maple trees due to its acidic effects on the soil. The study used a test plot to replicate favorable soil conditions prior to industrial pollution and found that sugar maples rebounded dramatically when calcium levels were restored.