Researchers found a link between increased serotonin receptors and body weight in overweight individuals. The discovery suggests that serotonin receptor manipulation could be a potential target for treating obesity.
Nick Holonyak Jr.'s seminal research on transistors and lasers has been recognized as one of the most significant papers in Applied Physics Letters. His work on room-temperature operation of a transistor laser facilitated faster signal processing, seamless communications, and higher performance electrical and optical integrated circuits.
Alexander Gottschalk, a Michigan State University professor, received the 2006 Benedict Cassen Prize for his groundbreaking research in nuclear medicine. He made significant contributions to the field, including dynamic camera studies of the brain and heart using technetium-99m.
UGA researchers have found evidence that low-temperature archaea may have evolved from moderate-temperature environments, contradicting current theories. The discovery sheds light on the evolution of Crenarchaeota and their role in fixing carbon dioxide, with implications for understanding global warming.
The three most important and damaging cacao diseases, black pod, frosty pod, and witches' broom, are threatening global chocolate production. According to plant pathology professor Randy Ploetz, black pod could reduce yields by an additional one million metric tons per year in West Africa.
A study of 886 women with BRCA1 or BRCA2 genetic mutations found that prophylactic surgery reduced ovarian cancer incidence by 89% and breast cancer incidence by 47%. The results differ for BRCA1 and BRCA2 carriers, highlighting the need for tailored risk-reduction strategies.
The professor's book explores how religious schools shape students' attitudes, skills, and beliefs essential to democracy. He argues that public schools should remain strong and viable, while supporting the training of religious teachers.
Researchers found that a new 'disease control rate' measure was associated with survival, suggesting it could enhance efficacy assessment and improve clinical trials for advanced NSCLC. The study pooled data from 984 patients with advanced NSCLC who participated in three randomized trials of platinum-based chemotherapy regimens.
The study demonstrated a statistically significant benefit of FOLFIRI in patients with metastatic colorectal cancer, improving progression-free survival and overall survival. Adding bevacizumab to FOLFIRI also showed improved outcomes, with a higher percentage of patients alive after one year.
Researchers develop IMPY tracer to visualize abnormal protein in Alzheimer's and prion diseases, providing new directions for future research. The tracer may also aid in early diagnosis of Alzheimer's with single photon emission computed tomography (SPECT) imaging.
A study of nearly 600 female heart failure patients revealed that women had better outcomes with lower VO2 levels and less need for a heart transplant. The results challenge the current 'gold standard' for assessing treatment options, highlighting the importance of considering gender differences in heart failure management.
The study found a reduced risk of breast cancer among women taking calcium and vitamin D supplements, with a significant interaction between those using supplements and those not. The researchers suggest further analysis of vitamin D metabolites may help clarify the findings.
Researchers found that zebra finch males prefer females with beaks more extremely colored than their mothers', demonstrating a 'peak shift' effect. This suggests that sexual imprinting drives the evolution of skewed mating preferences and exaggerated traits in birds.
Researchers have discovered six 'planemos,' planetary mass objects with masses similar to extra-solar planets, surrounded by dusty discs that may evolve into miniature planetary systems. These findings suggest similar infancies for our Sun and smaller objects, blurring the definition of a planet.
A new study reveals that dietary calcium is more beneficial than supplements alone for building strong bones. Vitamin D supplements only reduce fracture risk when combined with sufficient calcium levels. Meanwhile, research suggests high protein intake promotes bone health.
Seven young researchers from six countries have been awarded the IOF-Novartis Young Scholars' Award for outstanding contributions to osteoporosis research. The award aims to support and encourage careers in osteoporosis research, a field that has seen significant progress in understanding and treating this debilitating disease.
Researchers at OHSU Cancer Institute analyzed data from 5,587 colon cancer subjects to determine five-year conditional survival rates. The study found that as time elapsed since diagnosis, most subjects experienced an improvement in their subsequent five-year conditional survival following the initial disease-free period.
Research highlights continued health risks following surgery, particularly for patients with serious underlying diseases. By understanding the mechanisms of inflammation and adopting strategies such as minimizing surgical incisions and pre-surgery medication, healthcare teams can reduce these risks.
Researchers have developed a technology that can reduce imaging time for cardiac stress/rest tests by 50% without compromising image quality. This innovation allows for increased patient comfort and improved throughput in nuclear medicine departments, enabling more patients to be scanned without additional floor space or equipment.
The study found that tamoxifen reduced the incidence of non-invasive breast cancer, but had no effect on invasive breast cancer risk. Raloxifene also reduced the risk of invasive breast cancer and was associated with lower thromboembolic events.
Researchers at UCLA have developed a new method to detect Alzheimer's disease progression using FDDNP PET. The study shows that the worsening of memory and cognitive functions is correlated with increased 18F-FDDNP brain binding, providing valuable information for diagnosis and monitoring therapeutic interventions.
Researchers found that FDG PET scans can accurately diagnose fevers of unknown origin in half of cases, eliminating the need for further tests. The study suggests that FDG PET offers an effective tool for early diagnosis, risk stratification, and treatment, reducing hospital stays.
New research suggests targeting affected nerves and spinal cords may provide relief from chronic neuropathic pain. The study found changes in spinal cord neurons after sciatic nerve constriction injury, but the exact mechanisms remain unclear.
A study led by Lawrence Livermore National Laboratory found a steady increase in sperm DNA fragmentation with increasing age of participants. Sperm motility showed a high correlation with DNA fragmentation, associated with increased risk of infertility.
Natural killer cells rely on receptor tyrosine kinases, such as Tyro3, to acquire their reconnaissance tool kit, allowing them to distinguish friend from foe. The study reveals that environmental signals, transmitted through Gas6 and protein S, trigger the maturation of natural killer cells.
Researchers found that an intracellular protein called synectin is a key regulator of arterial growth, impairing development when disrupted. This discovery could lead to new therapeutic approaches for coronary artery disease and vascular biology research.
Researchers from UGA discovered a surprising absence of hot gas in the disk of spiral galaxy NGC 1068, which could offer clues to the origins of the Milky Way. The discovery suggests that the process of heating gas in this galaxy is more complex than expected.
Researchers discovered that the glassy-winged sharpshooter insect has a surprising symbiosis with two bacteria, Baumannia cicadellinicola and Sulcia muelleri. The bacteria receive essential amino acids, while the insect receives vitamins and cofactors from them.
A new approach to improving cancer chemotherapy involves giving anticancer drugs basic properties, allowing them to accumulate in both normal and malignant cells. This approach may lead to more effective treatment with fewer side effects.
Researchers have determined that gallium evens out the uneven bonds between plutonium atoms, leading to a stable high-symmetry cubic structure. The findings shed light on the nature of plutonium and improve confidence in its safety and reliability.
A recent study by Baicker and Chandra found that a 20% increase in health insurance premiums would reduce the probability of employment by 2.4 percentage points, equivalent to approximately 3.5 million workers. As healthcare costs rise, workers may accept lower wages for costlier health insurance.
Researchers found that a short nap can significantly boost physician concentration and alleviate chronic sleep deprivation. Interns who took naps reported lower levels of fatigue and improved ability to care for their patients.
Researchers have found that an ADHD medication 'harmonizes' with the body's dopamine system, improving attention and focus in individuals. The study, presented at a medical conference, provides direct evidence of the drug's beneficial effect, which was previously speculative.
A team of astronomers has found nearly 300 new galaxy clusters and groups, including 100 at extreme distances of eight to 10 billion light years. This discovery will allow scientists to study very young galaxies two-thirds of the way back to the Big Bang.
A Phase 3 trial shows Xcytrin significantly prolongs time to neurologic progression in patients with non-small cell lung cancer and brain metastases. Xcytrin, a texaphyrin-based drug, enhances cancer cell death when combined with radiation.
Researchers at ULg discovered a new kind of mutation that may contribute to the wide range of phenotypic variations observed in various species, including humans. The Patrocles database provides a comprehensive collection of these mutations, which can aid in discovering similar phenomena for other phenotypes and hereditary diseases.
Dr Elise Feng-I Morgan, a researcher at Boston University, has been awarded the 2005 IOF-Servier Young Investigator Award for her innovative research on osteoporosis. This prestigious award aims to promote awareness and understanding of osteoporosis among young scientists.
A large study found that regular physical activity is associated with better glucose control and lower body mass index in children with type 1 diabetes. The research analyzed data from over 19,000 patients and found that increased physical activity was linked to lower HbA1c levels and improved glycemic control.
Researchers have developed a new treatment protocol combining radionuclide therapy and chemotherapy that induces regression of prostate cancer in patients with metastatic disease. The combination regimen has been shown to alleviate bone pain and produce clinical benefit, including prolonged survival and reduced PSA levels.
Researchers have discovered a new biomarker, ICAM, that can predict lung cancer treatment response and survival. Patients with low levels of ICAM had a higher response rate to treatment and significantly better overall survival rates.
A study found that false-positive newborn screening results can lead to increased worry, parenting stress, and strained parent-child relationships. Parents who received incorrect information about the diagnosis had higher stress levels, whereas those with accurate information reported reduced anxiety.
Researchers found that beaver dams enhance hydrologic processes during peak flow and low flow periods, creating environments suitable for wetland formation and persistence. The study suggests that beavers play a crucial role in maintaining ecosystem diversity by altering river systems worldwide.
The number of outpatient health care visits for antipsychotic medications among children and adolescents in the US increased six-fold between 1993 and 2002. Diagnoses included disruptive behavior disorder, mood disorders, and psychotic disorders. Further research is needed to confirm safety and efficacy.
A study of 192 children found that most diagnosed with autism at age 2 were also diagnosed at age 9, with 76% receiving the same diagnosis. Parent interviews and clinicians' judgment also predicted future diagnoses.
Research studies will explore neuroendocrine changes throughout the lifespan, including potential secrets to longevity and stress reduction. The congress will also examine the links between nature and nurture in disease development and abnormal behaviors.
Researchers found that mussel body temperatures vary with local climate conditions, even when air and water temperatures are the same. This means that protected areas for conservation may need to be tailored to specific locations.
A study found that 40.9% of teenage girls reported unwanted sex at least once, with 37.6% fearing their partner's anger if denied sex. The data highlights the need for sexual health counseling to reduce risk and promote healthy relationships.
Researchers at the University of Pittsburgh's Simmons Center have developed a warm autopsy program for studying pulmonary fibrosis, allowing them to compare tissue samples from biopsies and organs retrieved soon after death. This approach may help understand IPF mechanisms and lead to new treatments.
A team of scientists at the University of Chicago has verified the main features of the cold dark matter model by comparing supercomputer simulations to recent astronomical observations. The simulations accurately reproduced the distribution of galaxies in the early stages of the universe's evolution.
Astronomers using gravitational lensing to study distant galaxies behind massive clusters, which act as giant cosmic telescopes. The ACS team has found three candidate galaxies that could provide the clearest view yet of the youngest galaxies ever seen.
A recent study found that men and women both prioritize detecting angry male faces, suggesting a bias towards threat detection. Angry male faces were also found more rapidly by both sexes than angry female faces or socially relevant expressions.
A new study examines how competition scales influence cooperative behavior in humans, finding that global competition leads to reciprocal cooperation and selfish conflict in local competition. The research suggests that the spatial scale of competition may drive evolutionary changes in social behavior.
A new study from the University of Utah Health found that children are more likely to be hit by minivans and trucks than by cars while playing in driveways. The research highlights the importance of educating parents and young children about safe play and established rules.
A team of researchers studied the courtship behavior of fruit flies to gain insight into the formation of innate behaviors. They found that a specific gene, Fruitless, plays a crucial role in controlling these behaviors.
A study by OHSU Cancer Institute physicians validates the reclassification of breast cancer stages, improving disease-free survival rates for patients previously diagnosed with Stage II and III. The revised classification system has been shown to increase 10-year survival rates for these patients, from 30-36%.
A recent study has shown that trastuzumab reduces recurrence of HER-2 positive breast cancer by 50 percent and does not add complications to radiation treatment. The study was conducted on 1,460 patients who received radiation in the original N9831 group, with no significant difference in side effects.
Researchers found that leisure activity levels significantly impact bone mass increase in children and adolescents, with more intense physical activity leading to greater increases in bone density. Exercise during childhood is crucial for optimal bone accrual and reducing the risk of osteoporosis later in life.
The article advocates for a more nuanced approach to treatment decisions for the frail elderly, emphasizing physician accountability and respect for patient autonomy. Dr. Rockwood suggests ways to empower patients and facilitate care that prioritizes their best interests.
The study found that child safety seats reduced risk of death by 21% compared to seat belts alone, and by 28% when excluding serious misuse. Child restraint systems offer improved protection for smaller children, making them a crucial safety measure.
A study found that prominent hand veins are the physical characteristic most commonly giving away age, while fullness and lack of wrinkles make hands appear younger. Skincare regimens and non-surgical procedures like laser treatments and chemical peels can reduce age spots and improve hand appearance.
A new study published in PLOS Medicine found that patients who receive randomly assigned treatments in clinical trials have similar health outcomes as those receiving individualized treatment. The researchers analyzed data from 25 trials involving nearly 18,000 patients and found no significant differences in health outcomes between th...
A 100,000 year-old Neandertal DNA sequence sheds new light on the genetic diversity of our extinct relatives. The study confirms that Neandertals were a more genetically diverse group than previously thought, with mtDNA from the Scladina sample showing more divergence relative to modern humans.
Researchers used FDG-PET imaging to diagnose osteomyelitis, achieving a 93% accuracy rate. The study's findings support the use of FDG PET as a diagnostic tool for chronic osteomyelitis.
Researchers found four 'planemos' with dusty disks that could evolve into miniature planetary systems. The discovery challenges the traditional view of what constitutes a planet.
Researchers have long wondered how Chaco rulers controlled outlying communities, but a new book suggests that the Southwestern skies played a crucial role in establishing a 'line-of-site' system. The book explores Chaco's economy, politics, and history, shedding light on the culture's architecture and settlement patterns.
A new study found that HIV infection rates among young non-Hispanic blacks are significantly higher than other racial groups, with a rate of 4.9 per 1,000 compared to 0.22 for all other races. The study suggests that segregation and differences in sexual networks contribute to the disparity.
A new study by Mathematica Policy Research found that Hispanic 3-year-olds are more likely to be obese than their black and white counterparts. The research surveyed over 2,500 children born in US hospitals between 1998 and 2000, and adjusted for socioeconomic factors such as education level and access to food.
Research finds that adolescent girls are less physically active than boys, with black and Hispanic girls reporting lower activity levels. School factors, such as racial segregation and median income, also play a role in shaping physical activity patterns among teens.
Studies in Sweden, China, and the US find strong links between smoking and osteoporosis, with smoking hastening bone erosion and increasing fracture risk. Second-hand smoke also significantly increases risk for osteoporosis and fractures in both men and women.
Researchers at Massachusetts General Hospital developed PET/CT imaging to assess carotid plaque inflammation, identifying patients at high risk for heart attacks. This breakthrough may lead to more targeted interventions and improved patient outcomes.
Researchers found that serotonin increases the amount and quality of sleep in fruit flies, even improving sleep in mutant flies with sleep deficits. The discovery highlights a potential link between serotonin's role in learning and memory and its effect on sleep.
A recent study conducted at Cornell University found that self-injury is a widespread phenomenon among adolescents and young adults, with most perpetrators being female and questioning their sexual orientation. The study highlights the need for solid research to detect, treat, and prevent self-injurious behavior in young adults.
The study found that the average time to disease progression was approximately eight months for patients taking dexamethasone alone, while those on the Thal/Dex regimen had an average progression time exceeding 17 months. Researchers also reported more frequent side effects with the combination therapy.
A study by Duke University Medical Center found that telephone counseling can improve the quality of life for patients waiting for a lung transplant, reducing emotional distress and anxiety. The researchers believe this approach could be useful for patients with chronic diseases who cannot access face-to-face counseling due to distance...
A re-examination of beta-blocker efficacy for hypertension treatment found that the risk of stroke is more significant for patients over 60 years old. In contrast, younger patients under 60 show no increased stroke risk. The meta-analysis suggests a potential shift in beta-blocker usage guidelines.
A new study reveals that intermittent explosive disorder (IED), a condition characterized by uncontrollable rage, is more prevalent than previously thought. The study found that IED attacks are often out of proportion to social stressors and can be linked to cases of road rage and spousal abuse.
Research highlights the threat of biological diversity loss to human health, citing Lyme disease and West Nile virus as examples. A rapid autopsy program for a rare lung disease called interstitial pulmonary fibrosis (IPF) also improves medical research outcomes.
Researchers found that slightly increasing NFATc1 activity leads to massive bone accumulation in mice, suggesting potential new targets for treating osteoporosis. The study's findings may enable the development of drugs that promote bone formation without causing undesirable side effects.
A meta-analysis of 33,826 asthma patients found that long-acting beta-agonists increase hospitalization rates by 2.5 times and life-threatening asthma attacks by two times compared to placebo. Naps and caffeine can combat fatigue in medical interns and night drivers.
Researchers have introduced a new technique combining SPECT and spiral CT for improved bone scanning, shortening diagnostic time and clarifying findings. The technology has been shown to enhance the specificity of bone scintigraphy and reduce CT radiation exposure.
The study found that most homeless young people prefer small, non-monetary incentives to take part in research. Researchers should involve them in design and provide feedback to encourage greater participation. The findings highlight the need for ethical guidelines in research with homeless young people.
People with IED often experience depression, anxiety, and substance abuse disorders. The disorder leads to substantial functional impairment and causes 43 attacks over a lifetime.