Researchers at the University of Missouri-Columbia have developed an in vitro model that mimics actual joints, eliminating the need for animal testing. This 'joint in a test tube' model can investigate causes and mechanisms of arthritis and screen new treatments.
Researchers at the University of Rochester confirm the X chromosome is a key factor in the origin of new species, with 60% of its genes causing infertility in hybrids. The large X-effect pushes newly formed species onto divergent evolutionary paths.
A large study found that adult height significantly impacts quality of life, with short individuals experiencing lower physical and mental well-being. Increasing height by a small amount can improve perceived health, equivalent to losing significant weight for obese individuals.
A study found HIV-infected African Americans are at a higher risk of developing end-stage renal disease (ESRD) than white patients with HIV, with rates similar to those with diabetes
The US has forgiven $26 million in Costa Rican debt to protect the country's tropical forests, with Conservation International and The Nature Conservancy providing additional funding. This is the largest debt-for-nature swap under the Tropical Forest Conservation Act, aiming to slow global warming by protecting carbon-storing ecosystems.
A study by University of Missouri-Columbia professors found that customer loyalty towards salespeople can lead to increased sales but make companies more vulnerable. Companies are recommended to develop strategies that encourage both salesperson and company loyalty.
A recent study published in Critical Care found that children under four are highly susceptible to sepsis, which can lead to severe disease states and death. The study analyzed data from nearly 300 children with sepsis and purpura between 1988 and 2006, revealing that younger age is a critical factor in determining survival rates.
The report highlights key elements of a healthy STEM workforce system, including rewards and risks that impact the attractiveness of STEM professions. Policymakers are advised to consider policy levers such as federal research funding, scholarships, and improving labor market signals.
A study found that Pycnogenol enhances healthy nitric oxide production, leading to increased blood flow and oxygen supply to muscles. The supplement allows for better expansion of arteries, meeting the enhanced oxygen demand of performing muscles.
A recent study found that trials with predominantly male participants showed significant risk reduction in non-fatal heart attacks when taking aspirin. In contrast, trials with mostly female participants failed to demonstrate a similar benefit. The researchers highlight the importance of considering gender when prescribing aspirin for ...
Researchers have discovered fossilized cashew nuts in Germany, dating back 47 million years, which suggest that the genus Anacardium was once distributed in Europe. This finding indicates that Europe may be an important biogeographic link between Africa and South America, challenging previous theories.
Astronomers have found an exceptionally massive black hole in orbit around a huge companion star in the nearby galaxy M33, with a mass of 15.7 times that of the Sun. The discovery raises questions about how such a big black hole could have formed.
A recent study published in Journal of Vision found that humans may not be more sensitive to biological motion compared to non-biological motion. The research, led by Dr. Eric Hiris, tested the effectiveness of masks and target sizes to determine detection performance, and concluded that humans do not exhibit enhanced sensitivity.
A double-blind trial of 214 African infants tested the safety and efficacy of a malaria vaccine, showing no serious adverse events and a 65% reduction in new malaria infections compared to previous trials. The study provides evidence of a strong association between vaccine-induced antibodies and reduced risk of infection.
Felice Frankel, a renowned scientific imagist, has been awarded the 2007 Lennart Nilsson Award for her exceptional work in creating crystal-clear scientific illustrations. Her photographs reveal previously invisible aspects of the world and have captivated the attention of scientists and the general public alike.
A new mathematical model explains how persistent microbes co-exist with humans, suggesting an increase in virulent organisms as populations grow. The model proposes that larger populations select for more virulent microbes, leading to potentially severe epidemics.
A USC Davis School of Gerontology study found that caregivers showed few negative mental or physical health effects, contrary to myths about caregiving. The research analyzed ethnic differences among caregivers tending to people with dementia and found unique health risks for African-American caregivers.
Researchers developed a computational model to predict TB reactivation causes and developed a TNF-modulating agent to balance inflammation reduction with infection resistance. Modifying anti-TNF treatment dosages and timing or using TB antibiotics before treatment can also prevent reactivation, according to the study.
Researchers at the University of Leeds have mapped the 3D structure of T7 endonuclease 1 enzyme, responsible for splitting DNA strands and creating genetically unique offspring. The discovery is expected to shed light on human individuality and viral replication mechanisms.
A BMC Medical Education study reveals that newly qualified doctors in the UK feel better prepared for their first clinical posts since 2000. The research suggests that updated medical school curricula and teaching methods are having a positive impact on doctors' perceptions of their readiness.
The grant will support the creation of a national Weapons and Protective Systems Technologies Center of Excellence, focusing on less-lethal munitions and devices, school safety, and pursuit management. The center will be managed by Col. Andrew F. Mazzara and supported by various academic departments and faculty.
Researchers at Rockefeller University have discovered a new accessory protein called SNMP that plays a crucial role in detecting pheromones. The study reveals that SNMP is essential for neurons to respond to these invisible communication signals, which are involved in behaviors such as recognizing siblings and courting mates.
A new study from McGill University finds that the HPV screening test outperforms the traditional Pap test in detecting pre-cancerous lesions without false negatives. The HPV test achieved an accuracy of 94.6%, while the Pap test only reached 55.4% accuracy, making it a more reliable method for cervical cancer screening.
A team of researchers from Arizona State University has discovered the earliest evidence of modern human behavior in South Africa, dating back 164,000 years. The findings suggest that early humans expanded their diet to include shellfish and other marine resources, likely as a response to harsh environmental conditions.
Researchers found that young toddlers automatically assume objects are talking about the whole object, rather than its parts. To improve understanding, parents should label specific parts and explain their function, reducing background noises and engaging with children while speaking.
Scientists create a functional radio system utilizing a tiny carbon nanotube detector, marking a significant milestone in the evolution of nano-electronics. The device enables wireless transmission of classical music wirelessly from an iPod to a speaker.
A new malaria vaccine candidate has shown a promising safety and tolerability profile in infants, with reduced parasite infection by 65% and clinical illness by 35%. The RTS,S/AS02 vaccine also demonstrated efficacy against new infections over a three-month follow-up period.
The University of Houston's Institute for Molecular Design will receive a $500,000 DNA sequencer, allowing researchers to analyze complex genome data in a couple of days, instead of years. The device will help advance synthetic biology and stem cell research at UH.
Researchers have discovered a new primitive crab species, Cycloprosopon dobrogea, which existed over 150 million years ago during the Jurassic period. The discovery provides insights into the evolutionary history of arthropods, including crabs, and their role in shaping biodiversity.
The University of Wisconsin-Madison study examines the global potential for biodiesel production from vegetable oils and animal fats, ranking countries by their ability to manufacture biodiesel at low cost. The top-ranked developing nations include Malaysia, Thailand, Uruguay, Colombia, and Ghana, which are well-positioned due to stron...
Changes in gene expression may cause people to develop a tolerance to inhalants by altering the response of fruit flies to future doses through epigenetic modifications. The research lays groundwork for understanding mechanisms of inhalant addiction and developing treatment methods.
Researchers discovered microRNAs linked to 10 major muscular disorders, opening doors to new treatments. The study found that targeting specific microRNAs may slow muscle loss by addressing the underlying biological processes.
Researchers use Google Sets to provide contextual information that improves the accuracy of automated image labeling systems. The system uses a three-step process, including image segmentation, ranked lists of probable labels, and post-processing context checks.
Research by Washington University School of Medicine found that obese children exhibit early heart disease symptoms, similar to those seen in obese adults. The study analyzed 168 children aged 10-18 and used a new imaging technique to track changes in the heart's muscular wall.
Research published in BMC Neuroscience found that genetic genes controlling the body clock also regulate the need for sleep, linking sleep to energy metabolism. The study used mice with different genetic make-ups to explore this connection, revealing changes in gene expression associated with sleep deprivation and recovery.
A new study estimates that US forest fires release about 30% of the nation's total mercury emissions, primarily affecting the environment and human health. The Southeast region emits the most mercury, followed by Alaska and California, highlighting the need for better protection measures.
A team of researchers has found that the Indian plate is only about 100 km thick, whereas the other parts of Gondwanaland are about 200 km thick. This discovery explains why India moved faster and further than the other parts of the supercontinent during its break-up.
Researchers have found a way to use solid-state NMR equipment to crack the secrets of hydrogen atoms and spot unwanted polymorphs in pharmaceuticals. This breakthrough opens up hydrogen nuclei to useful study by solid-state NMR, bringing immense benefits to the study of polymorphism in drugs.
Scientists have identified a crucial gene, Jhdm2a, that triggers the final step of sperm cell formation. Mice lacking this gene exhibit significant male infertility symptoms. The study provides evidence that Jhdm2a controls expression of genes required for DNA packaging in sperm cells.
The Phase II HapMap contains over 3.1 million SNPs, three times more than the initial version, improving the detection of genetic variants involved in common diseases and exploring human genetic variation. Researchers have associated over 60 common DNA variants with risk of disease or related traits using this powerful new tool.
Varicocele removal significantly improves testosterone levels in over two-thirds of men, leading to improved fertility and reduced symptoms of andropause such as low sex drive and depression.
Researchers examined the effectiveness of intra-arterial combination chemotherapy in treating advanced hepatocellular carcinoma (HCC) with portal vein tumor thrombosis (PVTT). The treatment led to a median survival time of 457.2 days and a one-year survival rate of 70%.
Researchers at HHMI used a new computational method to predict protein structure with remarkable accuracy. The method, called Rosetta@home, uses distributed computing and targeted rebuilding to overcome challenges in predicting protein structures.
Researchers found that Baicalin has potent anti-inflammatory and antioxidant properties, reducing the severity of acute pancreatitis in rats. The study suggests that Baicalin may be an effective treatment option for SAP, offering a promising therapeutic tool with low cost and extensive routes of administration.
The International HapMap Project has completed its second phase, tripled the amount of genetic variation assessed and describes up to 95% of common single-letter variations in the human genetic code. This increased density of identified SNPs allows researchers to better understand disease-associated genes and detect rare disease variants.
The Gerontological Society of America has awarded $70,000 in fellowships to seven outstanding doctoral students in geriatric social work. The Hartford Doctoral Fellowships provide recipients with dissertation grants and academic career guidance.
A study using a dynamic in vitro gastrointestinal tract system demonstrated that LIALDA tablets release 5-aminosalicylic acid (5-ASA) over a prolonged period in the simulated colon, with nearly 90% of 5-ASA released in the fasted state. In contrast, minimal 5-ASA was released in the stomach and small intestine.
Researchers have discovered a stable sex hormone signature in cells that may provide a more sophisticated way to determine sex than just identifying the presence of the Y chromosome. This breakthrough could lead to improved counseling for intersex individuals with ambiguous gender identities.
Researchers studying Holothuria glaberrima found that sea cucumbers can rapidly regenerate lost body parts by healing wounds with similar cellular mechanisms. This discovery may lead to new insights into repairing human tissues.