Research suggests that females initiate courtship in crayfish and send conflicting signals to males via urine sprays. This allows females to gauge male size and strength, ensuring only the fittest males fertilize their eggs.
A new study from the University of Michigan found that mastectomy patients are less likely to receive radiation therapy than those who had lumpectomy. Despite medical guidelines recommending radiation after mastectomy for certain patients, only 78% received it, compared to 95% of lumpectomy patients.
Researchers found that variations in the giggles' pitch and timbre can encode information about a hyena's age, dominance status, and individual signature. This allows hyenas to establish feeding rights and organize their food-gathering activities.
Researchers at St. Jude Children's Research Hospital have identified a new class of compounds targeting the MDMX protein, implicated in promoting various cancers, including retinoblastoma. The compound, SJ-172550, has shown promise in killing cancer cells by binding to the protein and allowing p53 to function normally.
The emergence of multidrug-resistant gonococcal bacteria threatens to make gonorrhoea extremely difficult to treat. Current treatment antibiotics may soon lose effectiveness due to rapid resistance development.
A review of 1098 studies found that pregnant women are more likely to develop deep vein thrombosis (DVT) on the left side, particularly in the left leg. The study suggests that routine examination of the iliofemoral system may be prudent when diagnosing DVT in pregnant patients.
A new study by Johns Hopkins researchers examines the potential influence that business connections between broiler chicken growers may have on the transmission of avian influenza, H5N1. The study found company affiliation to be the greatest driver of farm-to-farm disease transmission risk.
Researchers at University of Illinois have identified a new soybean aphid biotype that can overcome resistance genes in currently available varieties. This discovery highlights the need for breeders and seed companies to keep pace with evolving pest populations.
In complex organisms, regulatory networks are more democratic and collaborative, with master regulators controlling middle managers governing workhorse genes. These systems tend to be less autocratic, instead relying on mutually supporting partnerships for stability.
A study published in Neurology found that high levels of C-reactive protein are associated with worse performance in executive function, a process in the brain that enables planning, decision-making, and behavior selection. Higher CRP levels also affected the frontal lobe of the brain, equivalent to 12 years of aging.
Cassini collected temperature map data that shows hot regions resembling 'Pac-Man' eating a dot and striking bands of light and dark in crater walls. Surface texture variations are suspected to be the cause, with denser ice conducting heat away from the surface.
A recent WHO report reveals 1.2 million annual road deaths, with driver obesity linked to higher injury risk in motor vehicle crashes. PLoS Medicine publishes research and magazine articles discussing policies to protect pedestrians, bicyclists, and motorcyclists from injury.
Researchers at Boston Children's Hospital have identified a new strategy to treat type 2 diabetes by activating a cellular pathway that fails in obese individuals. The approach normalizes blood glucose levels in severely obese and diabetic mice, suggesting potential benefits for human treatment.
The Best Agers project aims to identify methods to keep the older generation in the workforce, as Europe faces an aging population. Nineteen organisations from eight Baltic Sea countries participate in the project, which has a budget of SEK 44 million.
Researchers have identified a molecule that blocks a key signaling pathway in pathogenic gut bacteria, reducing toxin production and preventing infection. This breakthrough discovery represents a novel class of antimicrobial agents with broad-spectrum efficacy.
Scientists at Scripps Research Institute found that compulsive eating shares the same molecular mechanisms as cocaine and heroin addiction. In rat models, obesity coincides with a deteriorating chemical balance in reward brain circuitries, leading to compulsive overeating habits.
Researchers have discovered that Mycobacterium tuberculosis stimulates macrophages to accumulate fat droplets, turning them into 'foamy' cells that can reawaken the latent TB infection. This cellular transformation allows the bacteria to leak out into the airways and progressively destroy lung tissue.
A combination of Vitamin A acetate and TRAIL kills precancerous colon polyps while sparing normal tissue, providing a potential new avenue for chemoprevention. The regimen, tested in mouse models and human colon cancer tissue, appears to address the issue of continuous long-term therapy required for current chemopreventive drugs.
Researchers have discovered a single gene responsible for increased yield and improved sweetness in hybrid tomato plants. The gene, called florigen, produces a protein that regulates flowering and fruit production, leading to higher yields and sweeter fruits.
Scientists have developed yeast that efficiently converts a wider range of plant waste sugars into alcohols for biofuel production. The modified yeast can produce both ethanol and butanol, which could replace fossil fuels with superior properties.
A recent study has discovered that certain marine bacteria can form biofilms on plastic fragments, potentially breaking them down. This research could lead to new methods for cleaning up microplastics and reducing their impact on marine life.
Marine Roseobacter clade decline linked to ocean acidification may impact global climate system and socio-economic consequences. Ocean acidification could significantly affect fish stocks and coral reef erosion.
Researchers found that environmental chemicals form a complex cocktail, leading to greater toxicity than individual chemicals. The EU recommends implementing guidelines for managing the chemical cocktail effect to assess risks to humans and the environment.
University of Guam professors Seyda Turk Smith, Kyle D. Smith, and Abdulgaffar Peang-Meth published an article in the International Journal of Intercultural Relations on university-based services for asylum seekers on Guam. The study highlights the importance of community formation among refugees through need-based activities and cultu...
A small group of people with the ability to multitask have been found to be able to drive safely while using a cell phone. The study, conducted by psychologists Jason Watson and David Strayer, found that these individuals, known as 'supertaskers,' showed no impairment on their driving performance when also talking on a cell phone.
Researchers at the University of Gothenburg have discovered two closely related enzymes, FT and GGT, as promising targets for treating lung cancer. By blocking these enzymes in transgenic mice, they found that cell growth was inhibited, tumour formation decreased, and survival rates improved.
Co-trimoxazole prophylaxis halves mortality in severely immunosuppressed HIV-infected adults, with benefits lasting at least 72 weeks. It also reduces malaria incidence, with no significant effect on opportunistic infections.
Researchers developed tiny gold-coated particles that can be implanted into cells, enabling remote disease diagnosis and tracking through laser-induced vibrations of proteins. These probes use different vibrational frequencies to detect disease progression.
A new study by the Scripps Research Institute found that unrestricted access to high-fat foods can trigger addiction-like responses in the brain, leading to compulsive eating behaviors and obesity. The study suggests that type 2 dopamine receptors play a key role in this process.
Researchers have developed self-powered nanometerscale sensing devices that can measure pH levels or detect ultraviolet light using electrical current generated from mechanical energy. The devices use improved nanogenerators with zinc oxide nanowires, enabling flexible and low-cost fabrication on various substrates.
Researchers found that beta-blocker treatment reduced metastasis and improved survival in breast cancer patients, with a 71% reduced risk of death compared to other groups. The study suggests that beta-blockers may slow down tumour growth and target patients at high risk of secondary cancers.
The European Union-funded Infrafrontier project has expanded its network of partners to include six new countries: Canada, Czech Republic, Austria, France, Italy, and the Czech Republic. This international collaboration aims to create an open-access research infrastructure for high-quality mouse models in biomedical research.
A multi-centre study found that specific lymph node radiotherapy is well-tolerated in early breast cancer patients after mastectomy or breast conserving surgery. The treatment showed no increased toxicity to the heart at three years follow-up, and estimated overall survival rates of 79%.
Tropical Storm Imani is expected to become a depression over the weekend, weakening due to increasing vertical wind shear. The storm's low-level circulation center is fully exposed on its north side, making it vulnerable to strong winds.
The study found that PARP expression is present in all breast cancer subtypes and correlates with a total response to chemotherapy. Tumors with high PARP levels showed a significant improvement in overall survival.
Surgeons demonstrate a new minimally invasive technique to correct pectus carinatum, a condition causing the chest wall to protrude outward. The 'reverse Nuss' procedure involves passing a curved bar beneath the musculature to push out the indentation. A dynamic compression brace can also be used to correct the condition in many cases.
Two people with compromised immune systems developed drug-resistant strains of the 2009 H1N1 virus after less than two weeks on therapy. Both patients showed clinical resistance to oseltamivir and peramivir, emphasizing the need for alternative treatment strategies.
A study published in the World Journal of Gastroenterology found that colonoscopy in Hong Kong Chinese children has a high safety yield and can effectively diagnose inflammatory bowel disease. The procedure also provided therapeutic value by successfully removing colonic polyps, with no complications reported.
Researchers suggest that humans have altered the planet so much that we are entering a new geological time interval, potentially sparking a mass extinction event. The proposed Anthropocene Epoch marks a significant shift in human influence on the environment.
Researchers like Eduardo Palacio-Pérez reinterpreted Palaeolithic art as having symbolic-religious significance, shifting away from purely decorative motives. This new perspective emerged in response to discoveries of paintings and engravings in caves, which were initially dismissed due to their naturalistic quality.
The median survival time for metastatic breast cancer patients increased steadily over 25 years, with improved outcomes for those with grade III tumours. Targeted therapies, particularly trastuzumab, have contributed to these advancements, offering new hope for patients with aggressive forms of the disease.
Dian Donnai, a leading expert on rare genetic diseases, has been awarded the March of Dimes/Colonel Harland Sanders Award for her pioneering work in defining and researching rare genetic conditions such as Williams syndrome. Her contributions have improved the lives of millions affected by these diseases.
Six finalists from various organizations will compete for the prestigious Franz Edelman Award, recognizing outstanding operations research-based projects that transform companies and industries. The winner will receive a $10,000 honorarium.
Two new studies shed light on treatment options for women carrying BRCA1 and BRCA2 genetic mutations, which predispose them to breast cancer. Prophylactic mastectomy was found to have little impact on disease-free or overall survival, while breast conserving therapy with chemotherapy reduced recurrence rates in the breast.
Tropical Storm Omais is rapidly losing strength in the northwestern Pacific Ocean, with maximum sustained winds near 39 mph. The system is expected to become fully extratropical on Saturday as it moves north-northeastward at 12 mph.
Physicist Garrett Lisi proposed a 'theory of everything' centered on the enigmatic E8, but Emory mathematician Skip Garibaldi and colleague Jacques Distler found fatal flaws in its math. The resulting paper shows that E8's unique structure cannot unify the universe's forces as Lisi claimed.
The Applied Forensic Sciences Department at Mercyhurst College conducted a mock fire event in Montgomery County, Pa., to simulate fatal fire scenes and test new methodologies for recovering and analyzing burned human remains. The team aims to strengthen protocols for assessing trauma in forensic cases.
A study has revealed new insights into the 3D organization of the human genome, detailing the spatial location of genes and non-coding sequences within the nucleolus. The research provides a high-resolution sequence map of this nuclear structure, shedding light on how nuclear information is packaged into functional compartments.
Astronomers at Yale University have discovered that supermassive black holes undergo huge growth spurts during galactic collisions and remain veiled in dust for extended periods. The team found that these growing black holes spend about half their lives hidden behind a 'veil' of dust.
A sun protection intervention program increased hat use at school, but had no effect on self-reported hat use at home or skin pigmentation. The program's success highlights the importance of educating children about sun protection and modeling healthy behavior.
Los Alamos researchers report a mechanism allowing nanocrystalline materials to heal radiation-induced damage through 'loading-unloading' effect at grain boundaries. This discovery provides new avenues for designing highly radiation-tolerant materials for next-generation nuclear energy applications.
Researchers found that a certain form of body fat inflammation is necessary for fat cell turnover in lean, healthy individuals. This challenges the theory that inflammation in adipose tissue only causes insulin resistance and type 2 diabetes.
A new study led by the University of Edinburgh reveals that pneumonia is the leading cause of child death in China, accounting for 17% of deaths in under-5s. The number of children dying before age five has dropped by 70% since 1990 due to increased access to hospital treatment.
A recent study found that standard hepatitis C therapy is less effective in urban minority patients compared to clinical trials, with lower sustained viral response rates. Researchers attribute this disparity to the complex interaction of genetic variations, environmental factors, and health behaviors in these populations.
Stephen Benton, K-State professor of special education, has been selected a Fellow of the American Educational Research Association. He is recognized for his significant contributions to education research and the development of research opportunities and settings.
The study found that 58.9% of kidney transplant candidates would accept a kidney from a donor at increased risk of viral infection under some conditions, while 17.7% always accepted them. Patients on dialysis and older patients more commonly accepted such kidneys.
Researchers have found that regulatory T cells slow down the immune response too soon, limiting vaccine effectiveness. By removing these cells, they discovered a two-fold increase in immune response to HIV vaccine.
Research found that 18-month-old gesturing in brain-injured children can predict later vocabulary delays; the study suggests that gesture may be a diagnostic tool for identifying children who will experience persistent language delay. The findings have both therapeutic and diagnostic implications.
Binghamton University researcher Omowunmi Sadik is developing sensors to detect and identify engineered nanoparticles, advancing understanding of their environmental risks. Her work aims to balance innovation with responsibility, encouraging the safe use of nanomaterials.
A study analyzing two popular medical dramas found that they often depict bioethical issues and actions that run afoul of professional codes of conduct. Informed consent was the most frequently observed issue, with exemplary discussions being more common than inadequate ones.