A recent study suggests that Neanderthals went extinct due to competition with Cro-Magnon populations. The researchers used a predictive method to analyze the distribution of archaeological sites and reconstructed climatic conditions during this period.
A recent study found a nanoscale motor in the T4 virus, which drives DNA packaging into its capsid. This discovery could inspire engineers designing sophisticated nanomachines and may also help pharmaceutical companies develop methods to sabotage virus machinery.
A study of surrogate decision-makers for critically ill patients found that 87% want to hear all prognostic estimates, even if uncertain. Family members value candor in discussing uncertain outcomes and want to prepare for the chance of their loved one's death.
A study by Chen et al. reveals that chopped-up ECM triggers excitotoxicity through the kainate receptor's KA1 subunit, leading to brain damage. Drugs blocking KA1 might provide an alternative way to save brain cells after stroke or head trauma without causing cognitive impairment.
Researchers used PHIFU with short duty cycle and high intensity combined with ultrasound contrast agent (UCA) to damage rabbit liver VX2 tumour by non-thermal effect. The study found that PHIFU combination with UCA can enhance non-thermal effects of ultrasound, promoting tumor cell apoptosis and inhibiting proliferation.
Researchers found that using two layers of cattail or rice straw mulch resulted in a 94-100% control of weeds and increased fruit yield. Natural mulches also reduced the need for synthetic herbicides, improving environmental benefits.
Researchers found that hepatic granulomas are commonly associated with chronic hepatitis C, occurring in almost 1% of stable patients. The association suggests granuloma formation is part of the immune response to chronic hepatitis C, rather than a separate disease.
A new study examines the aftereffects of a chlorine gas disaster in South Carolina, providing insight into how to prepare emergency response systems for accidental or terrorist releases. The study found that many hospitalized patients showed evidence of severe lung damage, but most recovered quickly and were discharged within a week.
Researchers at Massachusetts General Hospital found that adults who recognize the dangers of third-hand smoke are more likely to ban smoking in their homes. The study also showed that increasing awareness of how third-hand smoke harms children's health can encourage home smoking bans.
Research establishes a clear link between family rejection of LGB adolescents and negative health outcomes in early adulthood. Higher rates of family rejection during adolescence were significantly associated with poorer health outcomes for LGB young adults, including depression, suicidal attempts, and HIV risk behaviors.
Research suggests that high intake of inorganic phosphates, found in processed foods, can stimulate lung cancer development and growth. Dietary regulation of phosphates may play a critical role in treatment and prevention of the disease.
Researchers found that obese and non-obese patients have the same overall survival rate for ovarian cancer if their chemotherapy doses are tailored to their individual body weight. The study, published in Gynecologic Oncology, challenges earlier research suggesting obesity reduces ovarian cancer survival rates.
Researchers have identified three genes from the 1918 flu virus that enabled it to replicate in lung tissue, a key factor in its lethality. The discovery could help identify potential virulence factors in new pandemic strains and inform the development of new antiviral drugs.
This study investigates the efficacy of continuous regional arterial infusion (CRAI) using gabexate mesilate in treating severe acute pancreatitis. CRAI significantly reduced mortality rate and incidence of infectious complications compared to conventional systemic therapy.
Dr. Joshua Maurer's research aims to unravel the tricks of neuronal wiring using zebrafish. He seeks to replicate brain-like interactions on a glass surface, allowing real-time observation of neuron growth and guidance. This knowledge could lead to better nerve repair strategies in humans.
Researchers at Hebrew University have made significant breakthroughs in reversing brain birth defects in animal models by using stem cells to replace defective brain cells. In their study, Prof. Joseph Yanai and his team demonstrated that stem cells can induce the host brain to produce large numbers of stem cells, repairing damage and ...
A study by researchers at Rush University Medical Center suggests that decompressive surgery without fusion for spinal stenosis offers good value and that fusion surgery for spondylolithesis offers less value. The study analyzed over 3,900 patients and found that laminectomy costs $77,000 per QALY gained, while spinal fusion surgery co...
A new screening test using barium meal follow through with pneumocolon has been proposed for chronic abdominal pain of luminal origin. The test can detect both small and large bowel lesions, reducing the need for separate colonoscopy procedures.
Researchers discovered that an RNA aptamer specific to ricin's catalytic chain can protect cells from ricin-induced damage. The aptamer, called 31RA, inhibits the toxin's enzymatic activity and neutralizes its translation-inhibiting effects.
A new study by the Economic & Social Research Council highlights potential risks of Project Finance in developing countries, including environmental damage, health concerns, and human rights issues. The research proposes a code of practice to address these risks and improve social and environmental outcomes.
New research by Professor Christine Griffin at the University of Bath suggests that increases in young people's alcohol consumption are levelling off. The study also highlights the role of marketing practices in shaping young people's attitudes towards alcohol, and calls for a radical re-thinking of national alcohol policy to take into...
Researchers discovered that bortezomib is effective in treating rejection episodes caused by antibodies targeting transplanted kidneys. The study found prompt rejection reversal, prolonged reductions in antibody levels, and improved organ function with suppression of recurrent rejection for at least five months.
Scientists at the University of Warwick have discovered a thermodynamic switch that enables the pairing of X chromosomes in female cells during embryo development. The discovery sheds light on the complex mechanism behind X-chromosome inactivation and its role in preventing medical conditions such as Down's Syndrome and Turner's Syndrome.
Researchers conclude that mangrove and tree barriers erected to protect against tsunami are not effective and may even increase the risk of damage. Instead, experts recommend installing early warning systems, educating populations on tsunami signs, and implementing evacuation plans.
Researchers have discovered two enzymes involved in DNA demethylation, which could lead to targeted therapies aimed at slowing or preventing cancer. The enzymes control an 'on-and-off switch' for critical genes that trigger cancer and other diseases.
A study investigates the impact of femtosecond laser-induced damages on olfactory ensheathing cells, revealing that cellular activity can be controlled easily. The research suggests four reasons for the formation of femtosecond laser-induced calcium waves and proposes cell damage and recovery mechanisms.
Researchers at USC have successfully derived authentic embryonic stem cells from rats, which will facilitate the creation of animal models for studying human diseases such as cancer and diabetes. This breakthrough finding represents a major advancement in stem cell research.
Researchers discovered that nerves connecting to flexor muscles are guided by a protein family called ephrin-B, which is closely related to the previously identified ephrin-A protein. This finding provides insights into how nerves form and could lead to new strategies for treating disorders such as epilepsy and mental retardation.
Up to 20% of children and adolescents experience anxiety disorders, which can lead to educational underachievement and increased rates of depression and substance abuse later in life. Effective treatments include antidepressant medications, cognitive behavioral therapy, and a combination of both, with partial treatment not being adequate.
Researchers at the University of Rochester found that humans make optimal decisions when their unconscious brain processes information. A test revealed that people's brains subconsciously gather data and reach a confidence threshold before reporting a decision to the conscious mind.
Researchers identified impaired energy metabolism as a key factor in the initiation of amyloid beta plaques in Alzheimer's disease. This discovery provides new insights into the pathogenesis of AD and highlights the potential for developing new preventative and therapeutic approaches.
Scientists have developed a cocktail that can capture and maintain indefinitely the most fundamental of embryonic stem cells from essentially any mammal. The discovery allows researchers to produce genetically altered strains of rats with conditions mimicking human disease in a targeted way, making it easier to study human diseases.
A recent study by Charles Drew University found that gay and bisexual black men have the lowest use of prostate cancer testing. The percentage of gay and bisexual black men who received the PSA test was 12-28% lower than heterosexual blacks and 15-28% lower than gay and bisexual whites.
Researchers have identified apolipoprotein(a) as a natural regulator of inflammation, inhibiting neutrophil recruitment in vivo and reducing inflammatory responses. This novel function of apo(a) is independent of its molecular mimicry of plasminogen.
A recent study published in Neurology reveals that patients with REM sleep behaviour disorder are at a high risk of developing neurodegenerative diseases such as Parkinson's and Alzheimer's. The study found that nearly half of patients with this condition develop a neurodegenerative disease within 12 years of diagnosis.
A new study suggests that brain starvation as we age can lead to the production of amyloid plaques, a hallmark of Alzheimer's disease. Regular exercise, managing cholesterol and hypertension, and improving blood flow to the brain may help prevent or treat the disease.
Researchers found that the left inferior frontal gyrus (LIFG) is necessary to resolve word competition during speech. This brain region, including Broca's area, is responsible for aspects of speech production and language processing.
Despite increased emphasis on patient safety, little progress has been made, with physicians' autonomy and lack of standardization identified as key culprits. An average hospitalized adult receives recommended therapy only 53% of the time, leading to nearly 100,000 annual deaths due to hospital error.
The study reveals that small changes in nucleotide sequences near splice points can lead to significant changes in splice site choice and protein production. The discovery suggests that curing most genetic diseases will take longer than expected due to the complexity of alternative splicing mechanisms.
Research reveals how value influences visual processing, with early regions of the visual cortex activated by more valuable stimuli. Frontal and parietal cortex areas track value differences to guide decision making.
New brain-imaging research from UC San Diego finds that visual areas respond more strongly to objects of value, altering neural activation in the human visual system. This altered processing affects not only high-level cognitive function but also early stages of information processing.
Biologists have discovered the atomic structure of a powerful molecular motor that packages DNA into viral heads during assembly. The motor consists of two ring-like structures with five segments, progressively drawing genetic material into the virus's capsid.
A study published in Neurology found that people with REM sleep behavior disorder have an increased risk of developing neurodegenerative diseases like dementia and Parkinson's. The five-year risk was estimated to be 18%, while the 10-year and 12-year risks were 41% and 52%, respectively.
A study published in the World Journal of Gastroenterology found that resveratrol attenuates oxidative stress and histological alterations induced by liver ischemia/reperfusion. The results suggest that resveratrol has protective effects against hepatic I/R injury, making it a potential therapeutic drug for liver transplantation.
A new computer-aided screening technique has been developed to diagnose enteric lesions in capsule endoscopy, reducing the reading time from 5 hours to 1 hour on average. The technique uses image processing to screen out normal images, allowing for accurate diagnosis with high sensitivity rates.
Research shows that protein sports drinks are superior to carbohydrate-only drinks in improving cyclists' recovery from exercise. The study found that subjects who consumed a mix of carbohydrate and protein had lower self-reported fatigue levels and increased fat oxidation.
Researchers identified clinical characteristics of Fitz-Hugh-Curtis syndrome in 22 female patients, noting pain in the upper right abdomen and lower abdomen. Antibiotic treatment cured 20 patients, highlighting the importance of abdominal CT scans for diagnosis.
Researchers found that honeybees danced vigorously in response to cocaine, indicating a potential susceptibility to the substance. The bees' sensitivity to rewards was increased, and they exhibited withdrawal symptoms when the drug was withheld.
Researchers found that pregnant women with vitamin D deficiency were more than twice as likely to undergo a caesarean section compared to those without the deficiency. The study highlights the importance of maintaining adequate vitamin D levels during pregnancy.
New NIST report explores electronic technologies for overseas voting, highlighting potential risks and control measures. The report suggests that postal mail can be augmented with electronic methods to distribute blank ballots, but transmission of completed ballots via telephone, e-mail, and the Web faces significant security threats.
Researchers at NIST have developed a new technique to measure the toughness of thin insulating films used in high-performance integrated circuits. This breakthrough could help improve the reliability and manufacturability of ICs by identifying films with brittle fracture failure, affecting both manufacturing yields and device reliability.
A new study found that when the price of mental health services is equivalent to primary care co-payments, more people will seek follow-up care after an initial hospitalization for a mental illness. This leads to improved quality of care and reduced costs.
A study found that 2.2 million older US adults take multiple medications, with half involving nonprescription medications, increasing the risk of harmful drug-drug interactions. The most common interaction was bleeding problems, often caused by combining prescription and over-the-counter medications.
A study found that nearly half of older adults in the US use prescription and over-the-counter medications concurrently, posing a significant risk of adverse drug interactions. The prevalence of concurrent medication use increased with age, with 68% of older adults using at least two types of medications.
A computational method predicts bacterial protein interactions with remarkable accuracy, identifying critical residues that bind directly with other proteins. This breakthrough enables the development of new antibiotics targeting specific protein interactions vital to pathogenic bacteria survival.
The NIST electromagnetic phantom is a standardized test object that mimics the human body's electrical conductivity. This phantom allows for reproducible testing of walk-through metal detectors, enabling more accurate discrimination between threatening and non-threatening objects.
Researchers at UT School of Public Health found a strong link between PVL and severe CA MRSA infections. Using animal models, they identified PVL as a potential vaccine target against these deadly strains.
A new study from Iowa State University found that early socioeconomic adversity in children contributes to poor mental health by the time they become teens, disrupting their transition into adulthood. The study also shows the mechanisms that this influence operates through.
A recent study published in JAMA found that skipping one hour of sleep per night can increase the risk of coronary artery calcification, a precursor to cardiovascular disease. The study, which followed 495 healthy volunteers, found that those who slept less than five hours per night were more likely to develop calcified arteries.
Researchers found that fractionated radiation induced an immune imbalance, characterized by elevated expression of pro-inflammatory cytokines, in the distal colonic mucosa. This imbalance persisted even after the end of radiotherapy, with a Th2 profile dominating the immune response.