The faster they come
Subordinate mosquitofish are significantly faster than dominant ones in responding to attacks. Researchers found that fin damage from frequent fights leads to declining aggression.
Science News Archive June 2009
Page 4 of 26
Reading the brain without poking it
A new study from the University of Utah shows that microelectrodes can detect brain signals controlling arm movements without penetrating the brain. This technology may enable amputees and paralyzed individuals to control prosthetic limbs and computers using their thoughts.
AcademyHealth honors leading health services researchers
AcademyHealth has recognized several notable researchers in the field of health services research, including Willard G. Manning Jr., Hongmai Pham, Rachel Werner, Amal Trivedi, and Andrew Ryan, who have made lasting contributions to policy and practice through their scholarship, teaching, and leadership.
Site for alcohol's action in the brain discovered
A team of researchers at the Salk Institute has discovered a specific site within an ion channel protein where alcohols directly interact, altering brain cell communication. This finding could lead to novel treatments for alcoholism, drug addiction, and epilepsy.
New control system of the body discovered
The study identified the B1-receptor as a key player in regulating T cell entry into the central nervous system. Activation of this receptor slows down T cell entry and reduces clinical symptoms of inflammation in multiple sclerosis, suggesting a potential new target for therapy.
The science of hammering
A recent study by Dr. Duncan Irschick and colleagues found significant differences in hammering performance between men and women under varying light conditions. Men were more accurate when hammering in the dark, while women excelled in well-lit environments, regardless of target size.
GP bodies support guidelines for use of patient records in medical research
The British Medical Association (BMA) and Royal College of General Practitioners (RCGP) have endorsed the Wellcome Trust's guidelines for using patient records in medical research. The guidelines prioritize patient confidentiality, advocate for patients' rights, and promote public awareness and understanding of record use in research.
What makes a great footballer?
Researchers from the University of Queensland studied semi-professional players and found that skill components are crucial to football performance. The study suggests that unambiguous metrics can help identify new talent and streamline selection criteria.
Complications early in pregnancy or in previous pregnancies adversely affect existing or subsequent pregnancies
A comprehensive review of 75 studies found that complications in early pregnancy can increase the risk of preterm or very preterm delivery, placenta praevia, and congenital malformations. Identifying these risks allows clinicians to provide targeted monitoring and care for high-risk patients.
Microproteinuria: Indicator to monitor CNI-related nephrotoxicity in liver transplant recipients?
This study investigated microproteinuria as an indicator for CNI-related nephrotoxicity in liver transplant recipients. Microproteinuria, including β2-microglobulin and α1-microglobulin, was found to be a sensitive marker for detecting CNI-related nephrotoxicity, with correlations between urinary levels and renal function reductions.
Hepatic encephalopathy and prehepatic portal hypertension rat model
Researchers investigated hepatic encephalopathy (HE) and prehepatic portal hypertension in rats. The study found increased GS activity and decreased glutamate uptake in the hippocampus, leading to CNS damage. These findings may help understand HE mechanisms and develop new treatments.
A potent and selective anti-tumor agent on human gastric cancer
Research reveals Alisol B acetate inhibits proliferation of gastric cancer cells and induces apoptosis through mitochondrial and PI3K/Akt signaling pathways. This could lead to the development of a new anticancer agent for treating gastric cancer, one of the most common cancers worldwide.
Preoperative biliary drainage influences the outcome of resectional surgery for ampullary carcinoma?
A study published in the World Journal of Gastroenterology found that preoperative biliary drainage significantly reduced wound infection rates in patients undergoing resectional surgery for ampullary carcinoma. The findings suggest that PBD may have a positive impact on surgical outcomes, particularly in terms of infectious morbidity.
Melon research sweetened with DNA sequence
Scientists have successfully mapped the melon genome with hundreds of DNA markers, allowing for the identification of desirable genes for higher sugar content, disease resistance, and drought tolerance. This breakthrough will aid in developing new melon varieties for future summer picnics.
Dietary fat linked to pancreatic cancer
A new study found that high intake of dietary fats, particularly from red meat and dairy products, is associated with a higher risk of pancreatic cancer. Men and women who consumed more total and saturated fats had significantly higher rates of pancreatic cancer compared to those with lower fat consumption.
Implant bacteria, beware: Researchers create nano-sized assassins
Scientists have developed a nano-sized agent that kills bacteria on implanted devices by penetrating their defensive wall and eliminating the threat. The discovery holds promise for treating infected implants with no effective antidote.
Race origins and health disparites
Research by Nina T. Harawa reveals the complexities of racial categories in understanding health disparities, highlighting the need for a historically informed approach to address these issues.
A new plan for Panama's Coiba National Park and World Heritage site
The new management plan for Panama's Coiba National Park and World Heritage site identifies seven terrestrial zones and two marine areas. Nearly $11 million will be sought to establish public outreach and resource management programs.
Immigration makes Spanish pensions system more sustainable
Researchers used a demographic and economic model to evaluate the effect of immigration on the Spanish pensions system, finding that immigrant contributions will exceed native-born contributions by 2055. The study predicts a more pronounced increase in fertility rates among migrants, leading to a decline in pension loads.
Concordia University announces $3,348,402 CFI investment to support infrastructure
Concordia University has received a $3,348,402 CFI investment to support advanced research infrastructure, benefiting faculty members Suong Hoa, Lynn Hughes, and Ann English. The funding will enhance the university's reputation as an emerging leader in research across various fields.
LSUHSC research identifies enzyme that makes survival molecule for key vision cells
Researchers at LSU Health Sciences Center identified the 15-LOX-1 enzyme, which produces neuroprotectin D1, a molecule that protects retinal cells key to vision. This discovery has potential applications in treating retinal degenerative diseases and neurodegenerative conditions like Parkinson's disease.
Success of the academy approach?
Research studies examining Academies in England reveal mixed results, with notable improvements to student performance but diversity between and within Academies. The Trinity Academy case study highlights the significance of private business sponsorship and core values in achieving improved GCSE attainment.
Researchers pinpoint a new enemy for tumor-suppressor p53
A new protein called Trim24 marks the tumor suppressor p53 for destruction by attaching targeting molecules, leading to increased p53 expression and programmed cell death in cancer cells. The discovery provides a potential therapeutic approach to restoring p53 and killing tumor cells.
Trio of signals converge to induce liver and pancreas cell development in the embryo
A new study reveals that three cell-signaling pathways work simultaneously to direct pancreas and liver progenitor cells to mature into their final state. The research provides insight into the basis of tissue development and how it can be manipulated for regeneration and development from embryonic stem cells.
Trial shows promise for arthritis drug
A clinical trial of masitinib has shown it to be well-tolerated and effective in reducing the severity of active rheumatoid arthritis. The treatment was found to significantly reduce inflammation and improve symptoms, with mild to moderate side effects.
Latin America must cut blood pressure to thrive
New research warns of increasing rates of hypertension in Latin America, which poses a mounting threat to economies if not addressed. To combat this, policymakers and healthcare providers must work together to implement core policy changes, including detection, diagnosis, treatment, and control of high blood pressure.
Insulin analogue glargine possibly increases cancer risk
A study published in Diabetologia suggests that insulin analogue glargine may increase the risk of cancer in diabetes patients. The analysis found a statistically significant association between glargine use and an increased risk of malignancies, with a dose-dependent relationship observed.
Inhaled growth hormone safe for children deficient in this key protein
A new study found that inhaled growth hormone is well-tolerated by children with growth hormone deficiency and can safely deliver the medication to their bloodstream over a one-week period. The inhaler was preferred over traditional injections, which can be painful and difficult to administer.
Why saints sin and sinners get saintly
A new study by Northwestern University suggests that individuals with abundant moral self-worth may engage in immoral behavior to balance out their perceived level of goodness, while those who experience a moral-cleansing effect tend to engage in good work to restore their ideal level of moral self-worth.
Dolphins get a lift from delta wing technology
Researchers have discovered that dolphins' flippers exhibit aerodynamic properties similar to modern delta wing aircraft. The study found that swept-back flippers are the most efficient at generating lift, with the bottle nose dolphin's triangular flippers being the most efficient overall.
'Kill all the quants'?: Models vs. mania in the current financial crisis
Andrew W. Lo's lecture at SIAM Annual Meeting explores the evidence for and against blaming quantitative analysis for the financial crisis. He suggests a broader perspective reveals bubbles, crashes, and market dislocation are unavoidable consequences of human behavior and free enterprise.
Ultrasensitive detector promises improved treatment of viral respiratory infections
Researchers have developed a new ultra-sensitive detector that can detect respiratory syncytial virus (RSV) at lower levels than current standard assays. The device uses DNA hairpins attached to gold filaments, taking only minutes to produce results and suitable for use in pediatrician's offices.
Tryptophan deficiency may underlie quinine side effects
Researchers found that quinine blocks cells' ability to take up essential amino acid tryptophan, leading to adverse side effects. Dietary tryptophan supplements may help alleviate these issues by improving quinine's effectiveness against malaria parasites.
NSF awards $399,939 to study science impacts of economic stimulus package
The National Science Foundation has awarded $399,939 to two research projects examining the impact of the American Recovery and Reinvestment Act on employment in science and engineering fields. Researchers will collect data on ARRA funding of academic programs for two years.
Making nanoparticles in artificial cells
Researchers at the Max Planck Institute have successfully produced cadmium sulphide particles in microscopically small membrane bubbles, achieving control over nanoparticle size for the first time. The method uses biomimetic compartments similar to cell membranes to synthesize nanoparticles, offering a new approach to optical informati...
Rating attractiveness: Study finds consensus among men, not women
A new study by Wake Forest University psychologist Dustin Wood found that men agree more than women on who they find attractive. The study analyzed over 4,000 participant ratings of men and women's photographs for attractiveness, revealing significant differences in consensus between men and women.
Uncovering how cells cover gaps
Researchers studied dorsal closure in fruit flies to gain insights into human wound healing, discovering that the actin cable acts as a ratchet to guide epithelial cells over gaps. This mechanism could apply to developing tissues beyond dorsal closure and wound healing.
New research may help address radionuclide contamination at DOE sites
A new study aims to improve understanding of plutonium transport in groundwater, which is crucial for addressing radionuclide contamination at Department of Energy (DOE) sites. The research will use advanced techniques to measure minute amounts of plutonium and identify geochemical processes controlling its mobility.
MSU researchers link carbon markets and tree-planting to fight poverty, protect the Earth
Michigan State University scientists combine sustainable forest production with emerging carbon markets to help poorest people grow trees that boost their standards of living and slow climate change. By storing carbon in the soil, farmers can earn money on the global carbon market and use tree products for energy and food.
Engineers research effects of heat expansion on economically efficient bridge design
Researchers at Kansas State University investigate the impact of heat expansion on integral bridges, which lack expansion joints and have a continuous deck. The study reveals that soil compaction and temperature change range affect bridge performance, with some stresses induced by daily fluctuations.
Sightseeing helicopter crashes in Hawaii decrease following FAA regulations
A new study by Johns Hopkins Bloomberg School of Public Health found a 47% reduction in sightseeing crashes in Hawaii after the implementation of FAA regulations in 1994. However, this decrease was offset by an increase in fatal crashes due to low visibility conditions.
Cellulose-hydrogen production from corn stalk biomass by anaerobic fermentation
Researchers developed a method to convert corn stalk biomass into cellulose-hydrogen using anaerobic fermentation. The study found that pretreatment methods significantly impacted the yields of soluble saccharides and hydrogen, with optimal results achieved at 15 g/L substrate concentration, initial pH 7.0, and 36℃.
$2.25 million grant to help unravel the effects of early child abuse
A large-scale, five-year research project will investigate how various factors affect the well-being and mental health of children who have experienced child maltreatment. The study aims to understand the complex interactions between genetics, family environment, hormonal regulation, personality traits, and brain activity.
Enzyme fights mutated protein in inherited Parkinson's disease
Researchers at UT Southwestern Medical Center have identified a protein called CHIP that binds to the mutated protein LRRK2, promoting its breakdown. This finding provides a potential therapeutic target for treatments to halt the action of the mutated protein.
Further gene mutations linked to autism risk
Researchers found rare copy number variations in genes of children with autism spectrum disorders but not healthy controls. The study identified two novel genes, BZRAP1 and MDGA2, thought to be important in synaptic function and neurological development.
Xie Lab uncovers molecular machinery related to stem cell fate
The Xie Lab has uncovered the molecular machinery behind stem cell fate, revealing how BAM protein regulates stem cell differentiation and competition by interfering with eIF4A. This imbalance can lead to tissue degeneration and tumor development.
FSU research group wins $1 million grant to study nuclear fuels
A Florida State University research group has received a $1 million grant to develop new theoretical models for studying the microstructure of nuclear reactor fuels. The goal is to improve fuel reliability and performance, reducing the risk of mechanical failure and radioactive element release.
Researchers see evidence of memory in the songbird brain
A new study reveals three distinct profiles of gene expression in the songbird brain, showing how birds remember and process new songs. Gene activity changes were observed even 24 hours after the initial stimulus, suggesting that memory formation is still ongoing.
Corals stay close to home
Recent study reveals coral species tend to stay close to home, with high local genetic diversity important for conservation. Marine reserves should prioritize locally sourced coral recruitment to maintain healthy populations.
Study shows 1 in 25 deaths worldwide attributable to alcohol
A new study by CAMH researchers found that 1 in 25 deaths worldwide are directly linked to alcohol consumption. The burden of alcohol-attributable disorders is highest among men and younger people.
10 students receive scholarships for outstanding work in public health systems research
The AcademyHealth and Robert Wood Johnson Foundation have awarded ten scholarships to graduate students with outstanding potential in public health systems research. The recipients will present their research at the PHSR Interest Group meeting in Chicago.
In 'reading' a gaze, what we believe changes what we see
Researchers found that when people believe another person cannot see, the effects of adaptation are greatly reduced, suggesting a bi-directional relationship between gaze processing and mental-state attribution. This discovery could lead to a better understanding of what goes wrong in individuals with autism.
MU scientists convert pigs' connective tissue cells into stem cells
Researchers at MU develop method to transform fibroblasts from a pig's connective tissues into induced pluripotent stem cells. The new approach eliminates genetic incompatibility issues and allows for long-term animal models, paving the way for more accurate tests of stem cell therapies.
Scientists uncover patterns of genetic changes in mental retardation
Researchers identified a small set of genes responsible for mental retardation by comparing human DNA with mouse genome disruption data. The study found that genomic deletions and duplications frequently cause the disorder, enabling genetic testing and diagnosis.
Cambridge scientists cage chemical demon
Researchers at Cambridge University successfully cage individual molecules of white phosphorous, rendering it safe until release. The technique has potential to be used in cleaning up spills and handling other dangerous chemicals with greater safety.
UT gets federal stimulus grant for Parkinson's disease research
The University of Texas Health Science Center at Houston has received a two-year, $412,500 federal stimulus grant to support research on developing a therapeutic vaccine for Parkinson's disease. Researchers aim to target alpha-synuclein, a protein associated with the disease, and potentially slow its progression.
The AGA Foundation awards grant to Dr. Michael Choi to further his research on carcinoid tumors
The AGA Foundation has awarded a $150,000 grant to Dr. Michael Choi for his research on carcinoid tumors, a type of neuroendocrine cancer. This funding will support the development of novel therapeutic approaches to improve treatment outcomes for patients with these rare and often slow-growing cancers.
Cells use import machinery to export their goods as well
New research reveals that cells employ similar molecules for importing and exporting cargo, blurring the line between endocytosis and exocytosis. This challenges traditional biological assumptions about dedicated molecules for specific processes.
Exposure to phthalates may be a risk factor for low birth weight in infants
A study of 201 newborns found that high phthalate levels were consistently associated with low birth weight, highlighting the potential environmental risk factor for infant health. The research supports efforts to minimize phthalate exposure and reduce its impact on newborns.
Engineering innovative solutions for 21st century medicine
The UK has launched a £41 million initiative to develop innovative medical solutions for osteoarthritis, aging populations, and imaging technologies. Four new Centres of Excellence will integrate clinicians, biomedical scientists, and engineers to create high-tech treatments.