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.
UCI researchers found that learning activates neuron receptors that promote brain growth and limit memory impairment associated with aging. The study suggests that staying mentally active as we age may keep neuronal BDNF signaling at a constant rate, limiting cognitive decline.
The groundbreaking Videourology journal offers fully peer-reviewed video demonstrations of the latest urologic surgical techniques and technologies. The journal provides comprehensive search options, including videos organized by medical condition, anatomy, and surgical procedure.
Researchers at Kansas State University found that antioxidants can cause harm by suppressing key signaling mechanisms necessary for muscle function. The study suggests that increasing blood flow and oxygen delivery to the skeletal muscle is crucial during physical activity.
Researchers at the University of Western Ontario used state-of-the-art micro-computed tomography systems to collect detailed 3D scans of bat internal anatomy. The study identified a unique bone connection that distinguishes bats using laryngeal echolocation from those using tongue clicks.
A 30,000-year-old child's teeth found in Portugal provide insight into the evolution of modern humans and their relationship with Neanderthals. The analysis reveals that early modern humans had a different dental anatomy compared to recent humans, with greater volumes of dentin and pulp but less enamel.
The study reveals that RNA molecules' 3D shapes are dictated by their junctions, similar to how anatomical features define arm motion. The researchers also found that drug molecules interact with RNA in predictable ways, with size being a key factor in determining the preferred orientation.
Researchers describe molecular anatomy of Mycoplasma pneumoniae, a small bacterium that can survive on its own. The study reveals intricate networks and multifunctional molecules, challenging the idea of a 'minimal' cell.
Researchers use X-ray scanners and advanced computing to create detailed replicas of a whale's hearing anatomy. The study suggests mid-frequency sonar sounds are largely filtered, while higher frequencies used by whales for hunting are amplified.
The software converts flat medical scans into 3D images, making it easier for doctors to plan surgeries or radiation therapy. The technology is also being used in school biology classes to engage students and teach anatomy.
Researchers aim to use human pluripotent stem cells to produce cardiac myocytes for transplantation into diseased hearts. The study could potentially treat 500,000 new cases of heart disease annually.
Elsevier won 26 prizes in the 2009 British Medical Association Medical Book Competition, with Gray's Anatomy for Students and Elsevier's Rheumatoid Arthritis taking top honors. The company congratulated its authors and editors on their achievements, highlighting its commitment to quality content.
A new protein has been identified as crucial for protecting sensory cells in the ear, according to a study led by University of Iowa researchers. The protein, claudin-9, helps maintain the separation of potassium ions between cells, preventing intoxication and functional defects.
Researchers at Hospital for Special Surgery have identified a drilling technique that improves the outcome of ACL surgery by better reproducing the native ligament anatomy. The anteromedial portal drilling technique outperforms the traditional transtibial technique in restoring knee stability and preventing complications.
The study reveals that the mutated huntingtin gene activates JNK3 enzyme, inhibiting axonal transport and leading to neuronal cell death. The mechanism explains the late onset of the disease, as young neurons have a robust transport system that gradually declines with age.
A study published in BMC Family Practice found that most people lack basic knowledge of human anatomy. Approximately half of the participants correctly identified the location of major organs, highlighting potential problems in doctor-patient communication and diagnosis.
A 3D kidney atlas has been created to help diagnose and treat renal diseases more effectively. The atlas, part of the European Renal Genome Project, will aid in understanding genes that play a key role in renal diseases and other data on anatomy.
Researchers found that the gene ZBP1 is silenced in metastasizing breast cancer cells due to a methyl group attachment, leading to increased cell migration and proliferation. The study suggests potential drug targets for preventing metastasis and may help predict breast tumor outcomes by identifying signs of ZBP1 silencing.
A study using diffusion tensor imaging (DTI) reveals new details about the brain's white matter tracts, allowing radiologists to better understand conditions such as tumors, hemorrhages, and strokes. DTI provides a comprehensive view of brain anatomy, including connectivity between regions.
Professor Alessandro Riva, a leading expert in human exocrine glands, has made significant contributions to the understanding of salivary gland structure and function. He established benchmarks for the field through his published work, which includes numerous original observations and unique methods.
Researchers analyzed transtibial and anteromedial portal drilling techniques for ACL reconstruction, finding that anteromedial portal drilling allowed for better native ACL footprint restoration and knee stability. Re-reaming of the tibial tunnel was also a significant issue with conventional transtibial techniques.
Researchers used CT imaging to accurately reconstruct inner ear anatomy in extinct birds and reptiles, shedding light on their hearing abilities and behavior. The study found that Archaeopteryx had a similar hearing range to modern emus, suggesting it was more bird-like than reptilian.
Researchers at Albert Einstein College of Medicine have identified a protein called Menainv, which is present in invasive cells within a breast tumor. This protein enables tumor cells to become invasive and metastasize to other parts of the body.
Breast cancer cells closer to blood vessels are more aggressive and directed in their invasiveness, according to a new study. The research provides detail on how cancer cells invade surrounding tissue and reach blood vessels, offering insights into early stages of metastasis.
The University of Warwick is acquiring over 200 plastinated body parts from Germany for its medical school, a £400,000 investment in anatomy education. These specimens will be used by students to understand human anatomy and develop surgical skills.
Researchers reveal Tiktaalik roseae's internal head skeleton, showing key intermediate steps in the transformation of the skull that accompanied the shift to life on land. The study demonstrates that the gradual transition from aquatic to terrestrial lifestyles required significant changes in the head and neck structures.
The 2008 International Science and Engineering Visualization Challenge recognizes artists who use visual media to promote scientific understanding. The competition features stunning visuals and innovative uses of media to showcase various scientific research topics, including the anatomy of a squid and the creation of spontaneous buckl...
Cardiac computed tomography (CTA) is reliable for excluding coronary artery disease but lacks hemodynamic relevance and poses radiation risks. Fundamental insights into CAD suggest a graded prognosis according to ischemia severity, making revascularization unnecessary in some cases.
Research finds that children exposed to pets, suffering from early respiratory or ear infections, and growing up in large families are more likely to become adult snorers. Additionally, these factors may enhance inflammatory processes and alter upper airway anatomy, increasing the risk of adult snoring.
Sabertoothed and modern cats evolved distinct adaptations to killing, with the former having radically different skulls due to selective pressures for a precise shearing action. Modern cats' skull shape varies depending on size, but their anatomy shows a gradual transition from smallest to largest species.
Recent discoveries of flatfish fossils have revealed a gradual evolution of asymmetrical skulls, contradicting Charles Darwin's explanations for the species' unique anatomy. The fossils, dated to the Eocene epoch, show intermediate stages between modern flatfish and their primitive ancestors.
Two images, one showing neuroendocrine cancer relapse and the other a foot infection, demonstrate molecular imaging's ability to provide precise snapshots of disease anatomy. Imaging techniques are increasingly being used in combination to improve treatment planning and patient outcomes.
New research on azhdarchid pterosaurs suggests they were strongly adapted for life on the ground, with features such as long limbs, stiff necks, and padded feet. The study argues that these reptiles were specialized terrestrial stalkers, using their unique anatomy to pick up prey from the ground.
A study published in PLOS ONE demonstrates that the spontaneous activity of small neuronal networks in the cortex consists of highly structured patterns rather than random noise. These patterns are shaped by network connectivity and can be used to inform researchers about the underlying anatomy.
Researchers found that Paranthropus boisei's teeth showed little pitting indicative of eating hard foods, suggesting a more general diet than previously thought. This challenges the idea that their anatomy was specialized for a specific diet.
Research found that medial breast tumors primarily receive blood from internal mammary vessels, while lateral tumors have a more complex blood supply. This study supports the use of MRI for analyzing breast cancer's impact on surrounding anatomy, particularly vascular supply and lymphatic drainage.
A study from UC Irvine suggests that epilepsy is associated with an abundance of neuron 'hubs' in the brain, which can lead to seizures. These hub networks promote the onset of seizure activity by amplifying brain signals.
Researchers have discovered 53 million-year-old rabbit's foot bones that predates the oldest previously known rabbits by several million years. The fossils found in west-central India show advanced rabbit-like features and extend the record of rabbits on the Indian subcontinent by 35 million years.
A new CT imaging technique has significantly improved the outcome of living donor liver transplants by enhancing accurate visualization of vital bile duct anatomy. This innovation, adopted by radiologists at the University of Alberta Hospital, aims to reduce screening time and improve convenience for potential donors.
Researchers have discovered that a brain network linked to introspective tasks is less intricate and well-connected in children, with firmer connections forming as individuals mature. This finding has implications for understanding the effects of aging, brain injuries, and conditions like autism on brain function.
Nigersaurus taqueti is a 110-million-year-old plant-eating dinosaur with a unique skull structure, featuring hundreds of needle-shaped teeth and a broad, straight-edged muzzle. Its distinctive anatomy allowed it to efficiently crop plants near the ground, making it an unusual example among sauropods.
Men with bladder exstrophy report more robust sexual lives than women, with two-thirds of women experiencing moderate to severe dissatisfaction. Researchers aim to tweak surgical techniques to prevent sexual dysfunction in women.
The 2007 International Science and Engineering Visualization Challenge has selected its top winning entries, featuring visually striking images that showcase the beauty of science. The contest, sponsored by AAAS and NSF, honors artists who use visual media to promote scientific research.
Researchers at the University of California, Irvine have discovered a novel molecular switch that modulates nerve cell activity, offering new possibilities for treating mood disorders and epilepsy. The study shows a link between gut protein cholecystokinin and brain's natural marijuana-like compounds.
A new study suggests that walking on two legs, or bipedalism, evolved because it used less energy than quadrupedal knucklewalking. Researchers collected metabolic, kinematic and kinetic data from chimpanzees and humans walking on a treadmill, finding that humans only used one-quarter of the energy as chimpanzees when walking upright.
Researchers used CT scans to reveal a close-to-the-shoulder artery lesion in the Iceman, confirming his cause of death as a result of an arrowhead injury. The discovery sheds new light on life conditions in the past and the evolution of diseases.
Researchers at Duke University found that music tones correspond to the same numerical ratios as human speech frequencies. The study suggests that our ears favor these relationships due to exposure through everyday speech. This discovery may explain why certain tuning schemes sound more natural, like just intonation.
A study of female waterfowl reproductive tracts reveals two unexpected structures that may be designed to selectively exclude the male phallus. The findings suggest a dynamic co-evolution between male and female genitalia in response to sperm competition and forced copulations.
The Worldmapper project creates cartograms that rescale the size of territories according to various values like public health spending, malaria cases, HIV prevalence, and number of physicians. These interactive maps foster new perspectives on global health inequalities, emphasizing the need for action.
The Cone Beam Breast Computed Tomography (CBBCT) scanner produces three-dimensional pictures of breast anatomy to distinguish benign lesions from tiny cancers. The pilot study showed promising results, with one case demonstrating a cancer that was hard to detect on a mammogram.
A US study finds no link between rock climbing and increased osteoarthritis risk, despite increased bone density in climbers' fingers and hands. Climbing style intensity is a significant predictor of bone strength, with bouldering and sport climbing styles correlating with stronger bones.
Flamingos' unusual eating habit is revealed to be supported by an anatomical structure called erectile tissue. This newly discovered feature helps stabilizes the mouth and tongue, enabling them to efficiently consume algae and crustaceans from the water.
Scientists found that orangutans confined to resource-limited areas of Borneo had smaller brains than those living in more abundant Sumatra. The study suggests an evolutionary connection between food availability and brain size in primates.
A study published in Neurology found that children with autism have altered brain anatomy, including differences in gray matter and brain size compared to children with typical development. The researchers used MRI scans to measure the transverse relaxation of cortical gray and white matter in the brains of autistic children.
Scientists have discovered large, rotating disc galaxies that formed on a rapid time scale, just 3 billion years after the Big Bang. These findings reveal unprecedented details about the anatomy of these distant proto-disc galaxies, including their gas motions and star formation rates.
Researchers continue studying aging and cognition decline with a $6.2 million grant to investigate biological changes that contribute to age-related cognitive decline. The study will focus on hormones such as human growth hormone and IGF-1, which have shown to improve learning and memory in older animals.
A team of scientists has revealed detailed images of embryos over 500 million years old, shedding light on the evolutionary changes of the penis worm. The study uses synchrotron-radiation X-ray tomographic microscopy to reconstruct internal anatomy and reveals unique patterns in embryonic development.
Scientists used fossil and developmental data to pinpoint the genetic changes that led to whales losing their hind limbs. The gradual shrinkage of hind limbs was caused by slowly accumulated genetic changes, while the actual loss occurred when a drastic change inactivated the Sonic hedgehog gene.
Scientists describe new genus of African monkey, Rungwecebus kipunji, after analyzing physical characteristics and molecular samples. The discovery sheds light on the evolutionary history of monkeys in Africa and Eurasia.
Researchers developed a mathematical model of the cochlea that shows its spiral shape enhances low frequency sounds, increasing sensitivity by up to 20 decibels. This finding could lead to improved cochlear implants and better hearing outcomes.