New research suggests that extinct giant kangaroos likely walked instead of hopped, with stiff backs and strong joints supporting their body posture. The study analyzed anatomical differences in limb bones compared to other kangaroo species.
A systematic review and meta-analysis found that frontline health workers can accurately diagnose bacterial infections in young infants, but access to antibiotics is limited. The study suggests that improving diagnosis and antibiotic access can help reduce neonatal deaths in low- and middle-income countries.
Researchers found that melanoma cells break down nearby LPA molecules to create a trail, leading to the bloodstream and new sites in the body. This creates an aggressive cancer that spreads quickly and is difficult to treat.
A cross-sectional study found that medical schools with stricter industry interaction policies had students report fewer gifts and interactions with marketing reps, suggesting these policies can reduce biases. The results suggest that limiting receipt of gifts should be a central feature of medical school regulations.
Researchers have discovered that HIV can infect the entire female reproductive tract, including the vagina and ovaries, in a macaque model. The study used an artificial virus to track the spread of infection through the FRT, revealing that infected cells were detected throughout the tract within 48 hours after vaginal introduction.
Researchers quantify physical changes in red blood cells as they mature, finding that surface area loss is the primary factor, despite initial thought to be vesicle shedding. The study's findings could aid in early detection of clinical conditions with altered maturation patterns.
A recent UK study found that the price gap between 'more' and 'less' healthy foods increased over a decade, with healthier options costing up to 200% more. This trend has significant implications for public health and food security, potentially exacerbating social inequalities.
A new branch of mammals closely related to modern horses, rhinos, and tapirs has been identified through the discovery of ancient bones from India and Pakistan. These animals spent a considerable amount of time near water, similar to modern rhinos and tapirs, and were likely large and lumbering.
A study analyzing violin shapes from 400 years of history reveals that imitative designs cluster together, with specific features reflecting familial origins. The analysis highlights the role of genetic lineages and human relation in shaping violin architecture.
A study published in PLOS Medicine found that oral chelation therapy with dimercaptosuccinic acid (DMSA) reduced the amount of lead in blood of young children in Zamfara State, Nigeria. The treatment was associated with a significant reduction in venous blood lead levels, and no clinically severe adverse effects were reported.
A study reveals that female fruit flies use a small number of excitatory neurons and neurotransmitters like acetylcholine to decide whether to accept or reject male courtship. The decision-making process is found to be generated in three brain regions, suggesting a complex circuit involving sensory inputs and neural signaling.
A study of 37,539 children and young adults with type 1 diabetes found that the link between low average glucose blood levels and severe hypoglycemia declined substantially between 1995 and 2012. The relative risk for severe hypoglycemia decreased from 1.28 to 1.05 per 1% decrease in HbA1c levels, corresponding to a drop in risk of 1.2...
Scientists developed a new statistical method to track the continuous changes in wakefulness during sleep onset, identifying healthy subjects who behave as though awake despite being clinically asleep. The study suggests that understanding how one falls asleep is crucial for improving sleep diagnosis and treatment.
Researchers analyzed bat influenza viruses and found they could not infect human cells or other animals, contradicting initial concerns. The study suggests these viruses have limited genetic compatibility with Type A or Type B influenza viruses, making reassortment unlikely.
A study found that older adults who struggled to identify common odors were more likely to die within five years. Those with greater smell loss were substantially more likely to have died, even after adjusting for demographic variables.
Researchers have made a breakthrough in understanding how birds evolved from dinosaurs by studying fossil and developmental data, revealing the fusion of two bones to form a semilunate bone. The study clarifies the identity of wrist bones in both groups, shedding light on the evolutionary reversal of a lost bone.
Long-term PPI use is associated with a higher risk of severe hypomagnesemia, particularly among patients receiving diuretics. Researchers estimate that one excess hospitalization for hypomagnesemia may occur among 76,591 outpatients during the first three months of PPI treatment.
Researchers tracked the spread of novel tool-use behaviors among Sonso chimpanzees, demonstrating that wild chimpanzees learn and adopt new skills from each other. The study provides strong evidence for social transmission and cultural diversity in wild chimpanzee communities.
A large cohort study found that younger patients (18-64) have higher readmission rates for heart failure than older adults, but lower rates for myocardial infarction and pneumonia. After adjusting for confounding factors, the study suggests a post-hospital syndrome in both age groups, with similar timing and reasons for readmission
Researchers tested a stem cell transplant approach on infected rhesus macaques, finding that it failed to eliminate the HIV-like virus and its reservoirs. The study's results suggest that myeloablative total body irradiation can decrease viral reservoirs in blood cells, but may not be sufficient for a cure.
Researchers identified patterns in courtship and male-to-male combat behaviors across 70 snake species, revealing evolutionary relationships between behaviors. The study found that different clades developed unique behaviors, such as coiling without neck-raising and body-bridging, which replaced earlier toppling behavior.
Eyeless Mexican cavefish show no metabolic circadian rhythm under varying lighting conditions, saving up to 30% less energy compared to surface-dwelling fish. This adaptation enables the fish to thrive in food-limited environments without unnecessary energy expenditure.
A recent study found that mefloquine, an antimalarial drug, was not effective as an alternative to sulfadoxine-pyrimethamine (SP) for malaria prevention during pregnancy. Despite its safety profile, the drug showed poor tolerability and limited benefits for fetal health in HIV-positive women.
Researchers discovered that Streptococcus pneumoniae, the cause of most cases of bacterial pneumonia, can invade the heart and cause death of heart muscle cells. The study found that the pneumolysin toxin is responsible for this damage, and that an experimental vaccine formulation protected mice against cardiac invasion and heart damage.
A new study published in PLOS Computational Biology found that pupil size can predict the reliability of decisions. Researchers measured pupil size before participants made decisions and found that larger pupils were associated with poorer performance.
A study published in PLOS ONE suggests climate change may increase agricultural land availability in the North, but reduce it in tropical regions. This shift could lead to more frequent harvests in some areas and fewer in others, impacting global food production.
A new study published in PLOS Biology reveals that the meteorite impact that ended the dinosaurs also accelerated the growth of fast-growing flowering plants, which replaced slower-growing evergreen species. The research used fossilized leaves to reconstruct a plant community thriving during a 2.2 million-year period after the impact.
Researchers found that tolerance to HIV varies substantially between individuals, influenced by inherited genes, and is distinct from resistance. The study also discovered a gene linked to both resistance and tolerance, suggesting a unique mechanism for coping with the virus.
A study by WHO and University of Toronto researchers found that implementing essential medicines policies is associated with improved quality use of medicines. Countries with higher per capita wealth levels showed weaker correlation, highlighting the importance of these policies in low-income nations.
The article emphasizes the need for improved access to female-controlled contraceptive methods to counteract reproductive health risks caused by intimate partner violence. Clinicians can help women and girls regain control over their reproductive health through availability of effective contraceptives.
Researchers found that malaria parasites in birds react to mosquito bites, triggering increased parasite loads and higher infection rates of mosquitoes. This 'plastic' transmission strategy may improve malaria control by better understanding its ecological determinants.
A study published in PLOS ONE found that sharks thrive in healthy coral reefs with no fishing zones. The research revealed a significant increase in shark abundance in non-fished areas of the Great Barrier Reef, emphasizing the importance of preserving coral health for shark conservation.
Researchers developed a novel approach to study the 3D structure of plant cell walls using cryo-immobilized samples, revealing previously unseen details. This technique improves our knowledge of plant cell wall composition and can lead to more efficient production of biofuels.
Researchers found similarities between field and laboratory studies on Gulf killifish responses to Deepwater Horizon oil spill. Changes in genome expression were detected, with high concentrations causing developmental defects and DNA damage.
New research finds that South African patients with HIV have chances of remaining alive beyond 2 years on ART comparable to those of North American patients. After correcting for under-ascertainment of mortality, researchers found higher mortality rates in South Africa compared to Europe and North America.
Experts recommend prioritizing pregnant women for long-lasting insecticide treated nets through antenatal care clinics. This distribution strategy can help improve maternal, neonatal, and infant health by preventing malaria, which has adverse effects on mothers and infants.
Scientists have identified two new species of sea-dwelling, mushroom-shaped organisms in the deep sea. The organisms, belonging to the family Dendrogrammatidae, share characteristics with ancient life forms and potentially belong to the Ctenophora or Cnidaria phyla.
A prospective intervention study in Niger found that combining supplementary food with a cash transfer reduced rates of child malnutrition. The study compared the effectiveness of seven preventative strategies and found that the combination of food supplements plus cash was most effective in preventing acute malnutrition.
A recent study published in PLOS Medicine found that children who regularly consumed a healthy breakfast had lower levels of known diabetes risk factors, including fasting insulin and glucose. The researchers also discovered that consuming high-fiber cereal for breakfast was particularly protective against insulin resistance.
The rabies virus manipulates axonal transport to reach the brain quickly, with a speed of 8 cm/day, 40% faster than its regular partner NGF.
Researchers found that stone-tipped spears created larger and wider wound cavities than sharpened wooden spears, despite not penetrating deeper into gelatin. This could indicate a greater 'killing power' for tipped spears.
A Bronze Age wine cellar was uncovered at an ancient Canaanite palace in modern-day Israel, showcasing wine residue from over 40 jars. The jars contained chemical compounds indicative of wine, as well as subtle differences in ingredients or additives such as honey and cedar oil.
Researchers found that wolves experience yawn contagion, with stronger social bonds increasing frequency, and females reacting faster than males to close associates' yawns. The results suggest a common ancestral trait of contagious yawning among mammals, revealing an emotional connection between individuals.
A study found that India's Total Sanitation campaign increased latrine availability and reduced open defecation, but did not improve child health outcomes. Despite limitations, the results highlight the need for continued efforts to expand global understanding of sanitation's impact on child health.
Researchers found that Deformed Wing Virus (DWV) is the most affected virus species by Varroa infestation, while Kashmir Bee Virus (KBV) peaks two years after initial infestation and disappears. The study highlights the importance of beekeeper awareness, mite monitoring, and efficient Varroa control.
Researchers have identified marmosets as an ideal animal model to study Middle East respiratory syndrome corona virus (MERS-CoV) due to their DPP4 protein's similarity to humans. The marmoset model recapitulates severe respiratory symptoms seen in human patients, making it a promising candidate for future therapeutic studies.
Researchers found land snail shell remains from ~30,000 years ago in Cova de la Barriada, Spain. The discovery suggests that ancient human populations used snails as a food resource in Europe ~30,000 years ago.
A study found that orb-weaving spiders living in urban areas tend to have larger bodies and increased reproductive abilities compared to those in natural environments. The spiders' size is associated with the level of urbanization, with larger bodies found in areas with more hard surfaces.
A study found that hospital admission blood glucose levels can predict the risk of developing type 2 diabetes over three years. The risk increases linearly with increasing blood glucose level at admission, with a 1% risk for patients with low glucose and up to 15% for those with high glucose.
A study of 56,666 patients with stroke found that weekend nurse staffing was strongly associated with mortality outcomes, regardless of the day of admission. Patients admitted to hospitals with lower nurse-to-patient bed ratios had a higher risk of death, highlighting the importance of adequate staffing levels on weekends.