Researchers have discovered tetrodotoxin, a potent paralysis-inducing neurotoxin, in two species of terrestrial flatworms. The toxin was found to be used during predation to subdue large prey and may also play a role in defense through egg capsules.
Researchers analyzed ancient Neanderthal fecal matter, revealing significant plant intake alongside meat consumption. The study provides new insights into the role of vegetables in the Neanderthal diet.
The article highlights the dangers of new anti-homosexuality laws that restrict freedoms, healthcare access, and create a climate of fear. These laws can lead to increased rates of HIV transmission, torture, and murder of LGBTQ+ activists, underscoring the need for continued research and support.
A study of all adult deaths in English hospitals from 2010-2012 found that falls and healthcare-associated infections were the most frequent incident types, accounting for one in five reported deaths. Deficiencies in checking and oversight accounted for 11% of incidents, including medication errors and misinterpretation of test results.
A study published in PLOS Biology found that many protected areas are established on low-value land, failing to protect endangered species. The researchers propose a 'happy medium' where countries can achieve significant biodiversity benefits with minimal lost-opportunity costs.
The PLOS Medicine editors call for more research on approaches to preventing deliberate attacks on health care facilities and health workers during armed conflict. Despite increased international initiatives and conferences, attacks on healthcare have escalated, causing significant harm to populations.
Research reveals eight spider families preying on fish worldwide, with diverse species adapting to aquatic environments to catch fish even larger than themselves. Semi-aquatic spiders possess powerful neurotoxins and enzymes to kill and digest their prey.
A new study found that red blood cell transfusions may benefit patients at high risk of death after trauma, but harm those at low risk. The study analyzed data from the CRASH-2 trial, which included 20,127 trauma patients from 40 countries.
A new assay can detect toxic prions in blood samples from humans with variant Creutzfeldt-Jakob Disease (vCJD) and asymptomatic animals. The test, developed by French researchers, was tested on vCJD patients and non-infected controls, accurately identifying infected individuals.
A study published in PLOS Computational Biology reveals that hereditary disease genes are found throughout the human body. This discovery highlights tissue-specific protein interactions and provides a powerful tool for identifying new therapeutic targets.
A new study reveals that late-stage sepsis triggers the reactivation of dormant viruses in the body, leading to secondary infections. Researchers found that 43% of sepsis patients had multiple viruses detected in their blood or urine.
Two studies published in PLOS Medicine found a link between moles and increased breast cancer risk. Women with more moles were more likely to develop breast cancer, particularly postmenopausal women. The findings suggest that nevi may be affected by hormone levels, which could be used as a marker for breast cancer risk.
Experts from the London School of Hygiene & Tropical Medicine and UNHCR call for equal access to HIV treatment for refugees and internally displaced persons in stable settings. The authors recommend routine adherence monitoring systems and point-of-care laboratory monitoring to ensure high levels of viral suppression.
Researchers found YbeY critical for cell fitness, stress tolerance, and ribosome quality control in V. cholerae. It also targets virulence-associated small regulatory RNAs, making the bacterium less harmful.
A study published in PLOS ONE found that feeding juvenile corals prior to transplantation significantly improved their survival rates. Coral recruits fed with a higher amount of food grew faster and larger than unfed corals, leading to higher post-transplantation survivorship.
A new smartphone-based system, WVC Reporter, increased reporting efficiency, improved accuracy, and enhanced data visualization. Reports using the app produced more accurate locations, were entered quicker, and had a lower data entry error rate than manual reports.
A new species of Mediterranean worm lizard, Blanus mendezi, has been identified with the discovery of its first intact skull, providing insights into the evolution of this poorly known group of reptiles. The fossil, dated to 11.6 million years ago, features a well-preserved skull and vertebrae, shedding light on the species' history.
A 10-valent pneumococcal conjugate vaccine (PCV) effectively prevents community-acquired pneumonia in infants in Latin America, with a 22% reduction in new cases. The vaccine also leads to significant reductions in acute otitis media and invasive pneumococcal disease.
A population-based observational study found centenarians are more likely to die of pneumonia and frailty, while hospital deaths were higher in England compared to other European countries. The study suggests that better health care provision could enable people to remain in their usual residence and reduce hospital admission at the en...
Researchers have discovered a new coronavirus inhibitor that exhibits potent antiviral activity by blocking the hijacking of host membranes. This compound, called K22, prevents coronaviruses from usurping and re-shaping human host cell membranes to produce new virus particles.
Researchers analyzed angler catch records for evidence of a lunar cycle's effect on muskie behavior. They found that muskellunge are caught consistently more around the full and new moon phases, with anglers catching 5% more fish during peak lunar days.
Female bark scorpions exhibit poor sprinting ability but rapidly sting in response to simulated threats. In contrast, male scorpions have superior sprinting ability and longer legs.
A new study from Zimbabwe found that providers are hesitant to test children for HIV due to concerns about guardianship and privacy. The research highlights the need for improved guidelines, training, and organizational adjustments to increase HIV testing and counseling among this vulnerable population.
A recent study suggests that the evolution of human brain and brawn are intertwined. Human muscle accumulated more metabolic change than chimpanzees, while the human brain metabolome evolved four times faster. These findings may hold clues to common human metabolic diseases.
Paul Glasziou argues that open access models can reduce research waste and improve the quality of medical research. He suggests that charities and governments should publish funded work in open access to make it more effective, as $100 billion of pre- and post-publication research is wasted annually.
A new class of antimicrobials inhibits biofilm formation and eradicates mature biofilms in Gram-negative and Gram-positive bacteria. The substance, '1018', blocks the stringent stress response mediator (p)ppGPP, preventing its role in biofilm maintenance.
Ape ancestors' diets evolved from hard-shelled fruits and seeds to soft and mixed fruit-eating, with no diet specializing in leaves. The dietary specialization may have ultimately contributed to their extinction when drastic environmental changes occurred.
A large cohort study found that universal strategies to prevent obesity, regardless of genetic risk, are more effective in reducing the risk of developing type 2 diabetes. The study highlights the importance of promoting healthy lifestyles to minimize excess weight, particularly among younger and leaner individuals.
Research by Swedish and US researchers reveals that mothers who are overweight or obese have a higher risk of giving birth to babies with low Apgar scores, indicating an oxygen deficit at birth. The study suggests that preventing women from becoming overweight or obese during reproductive age could improve perinatal health.
Researchers found four genes in trypanosome parasites that make them sensitive or resistant to the human immune system. The study identified a previously unknown gene that codes for a transmembrane channel, which may be involved in the uptake of human defense factors by the parasite.
In the first study of its kind, scientists tracked young king penguins exploring new habitats and eventually developing their foraging skills similarly to their parents. The study found that young penguins undertake large-scale movements at sea and use similar habitat to find food as adults.
Wind speeds on migration predicted annual survival, male arrival date, female egg laying, and productivity of yellow warblers. Higher westerly wind speeds associated with lower apparent annual survival due to increased in-flight mortality risk.
A new sauropod dinosaur species, Leinkupal laticauda, has been discovered in Argentina, shedding light on the survival of Diplodocidae in South America. The fossil findings suggest that the extinction event at the end of the Jurassic or beginning of the Cretaceous period may not have been global.
A blood test has been developed to predict impending preterm birth, distinguishing between true and false labor in 70% of cases. The new test outperforms existing methods by using a set of nine genes coupled with clinical data, allowing for all women to be screened as part of routine blood work.
A pre-treatment snack improved treatment uptake for schistosomiasis in Ugandan schoolchildren, with higher rates of drug adherence and lower infection rates. The study found that providing a snack before mass treatment increased uptake by 15.2% compared to schools without snacks.
A study published in PLOS Pathogens found that IL-27 balances the immune response to influenza, reducing lung damage and improving recovery. The researchers discovered that well-timed IL-27 treatment can be beneficial for mice infected with a highly pathogenic influenza strain.
Researchers found that SOCS4-deficient mice exhibited abnormally high levels of cytokines and chemokines, similar to a 'cytokine storm', which contributed to severe symptoms and slower viral clearance. The study suggests SOCS4 plays a crucial role in regulating the immune response against influenza virus.
A study by Sharon DeWitte suggests that survival may have improved following the Black Death, with post-epidemic populations having a higher proportion of older adults and lower mortality risks. This could indicate enhanced survival and decreased mortality after the epidemic.
Students in Cape Town spend almost 60% of their day in poorly ventilated classrooms, at risk of TB transmission. The researchers recommend increasing natural ventilation to reduce risks and lower CO2 concentrations.
Researchers estimate that mass vaccination campaigns have reduced yellow fever cases and deaths across Africa by 27%. The campaigns have led to a substantial decrease in the disease's burden, with higher reductions in some countries targeted by vaccination efforts.
A study found that birds underwent rapid body size changes to exploit new ecological niches, while other dinosaur lineages stagnated. The team estimated the body mass of 426 species using leg bone thickness, revealing a prolonged period of high evolutionary rates in the lineage leading to birds.
A comprehensive review found that improved water sources in low- and middle-income countries often contain fecal contamination. The study's findings suggest a large proportion of the world's population uses unsafe water, highlighting the need for alternative indicators of safe water.
International scientists argue that crucial scientific questions remain unanswered and important public health goals unmet in the case of smallpox. Research on live variola virus remains vital due to recent advances in synthetic biology and ongoing knowledge gaps, making its destruction less meaningful.
A new analysis of archaeological records suggests that complex interbreeding and assimilation between Neandertals and early modern humans may have led to the demise of Neandertals. This contradicts previous theories that suggested modern human superiority was responsible for their extinction.
Over 60 years of citizen science observations detected trends in Midwestern lake water clarity. Lakes further north showed an overall trend toward increasing water clarity, whereas those in the south experienced a decline. These geographical patterns suggest latitude may play a role in water clarity trends.
A large-scale seafloor survey found widespread presence of bottles, plastic bags, fishing nets, and other types of human litter across European seas. Litter was found at all depths, from shallow waters to 4500-meter waters, with the highest density in submarine canyons.
A recent study published in PLOS Medicine found that only about half of strokes are attributable to known risk factors. The researchers analyzed data from over 6,800 individuals and estimated that hypertension and smoking were the most significant contributing factors.
A French study found a small link between HIV drug use during pregnancy and an increased risk of heart defects in children. However, the benefits of antiretroviral therapy in preventing mother-to-child transmission of HIV outweigh the risks.
A study published in PLOS Pathogens demonstrates that an antimicrobial peptide produced by human immune cells can promote mutations in bacteria that make them more lethal. Researchers found that a specific immune system cell called polymorphonucleocytes can trigger bacterial conversion to a more resistant form.
Researchers traced HIV's adaptation to its human host over time in North America, finding gradual changes that are unlikely to impact vaccine design. The study suggests that HIV's slow adaptation rate could have implications for host immunity and treatment efficacy.