Researchers discovered a new species of threespine stickleback in Lake Constance that diverges rapidly, even when breeding alongside other populations. This finding challenges traditional speciation theories and highlights the importance of genetic analysis in understanding evolutionary processes.
A pregnant Brazilian woman infected with the Zika virus had a stillborn baby with severe tissue swelling and central nervous system defects. The case provides evidence that congenital Zika infection may be linked to hydrops fetalis, hydranencephaly, and fetal demise.
Researchers have discovered significant differences in cells derived from dura mater and skin samples across the lifespan, highlighting the importance of considering the cell's original location and donor age. These findings necessitate further exploration into epigenetic patterns in stem cells used for new tissue and organ generation.
A recent study published in PLOS Pathogens found that nitric oxide plays a protective role in the blood-brain barrier, reducing parasite invasion and inflammation. The researchers discovered that NO inhibits inflammatory molecules, such as TNF and MMP-9, which can lead to BBB damage.
The BENEFIT trial suggests that treating Chagas disease earlier is crucial, as it did not show incremental benefits in cardiac outcome. The study found that 17-18% of patients died over a period of five years, with the number comparable to breast cancer mortality.
Researchers from Colorado State University have discovered a potential diagnostic tool for dengue fever by analyzing metabolomic profiles in patient serum. The study found that distinct metabolic clusters were associated with different disease outcomes, including the progression to hemorrhagic fever/dengue shock syndrome.
A study published in PLOS ONE found that adult male gorillas call more frequently than females and juveniles during feeding, especially when consuming aquatic vegetation, flowers, and seeds. This food-associated calling may help express well-being and aid group coordination and social cohesion.
Researchers from PLOS ONE discovered three skeletons buried in medieval graves in France that may have belonged to Muslims, with DNA analysis revealing paternal lineage from North Africa. The burials follow Islamic rites and radiocarbon dating suggests the skeletons are from the 7th-9th centuries.
Research suggests that minimum unit pricing (MUP) and volumetric taxation are more effective in reducing health inequalities compared to other tax options. These policies target cheap, high-strength alcohol and can lead to significant decreases in mortality rates among lower-income groups.
A cohort study found no significant differences in growth, psychomotor development, and health outcomes between infants born to mothers treated with mefloquine or sulfadoxine-pyrimethamine. However, a slight increase in risk of developmental delays was observed at 9 months among those treated with mefloquine.
Researchers have developed a method to make mosquitoes resistant to arboviruses like Dengue and Zika by introducing two strains of Wolbachia parasite. The superinfected mosquitoes showed improved virus inhibition and reduced transmission, making it a potential tool to combat mosquito-borne diseases.
Eight new species of whip spiders found in Brazilian Amazon, with diversity of Amblypygi species now at 25, threatening habitats from iron mining and dam flooding. Conservation efforts recommended to preserve their increasingly threatened habitat.
Pollinator preferences favor orchids with stronger scents in the Swiss lowlands, but not in mountain regions. Key differences were found in floral scent molecules and pollinator communities between the two areas.
A new vaccination scheme is projected to reduce the frequency of Hand, Foot, and Mouth Disease (HFMD) in China. The study suggests that serotype replacement will not significantly impact the benefits of a HFMD vaccination campaign, with cross-protection lasting an average of 6.77 weeks.
Researchers discovered a novel mechanism by which adenovirus protein E4orf4 inhibits the DNA damage response, improving viral replication. This finding provides insight into the virus's ability to infect immunocompromised patients and may lead to new cancer therapies.
Researchers found two distinct subgroups of Yersinia pestis bacteria causing human plague in Uganda's West Nile region, with one subgroup found at lower elevations and the other at higher elevations.
A PLOS ONE study found that inhibitory control affects physical problem-solving in pet dogs. The ability to 'wait-for-treat' was identified as a key factor in their problem-solving performance.
TB cases decreased in recent US entrants from Mexico, Philippines, India, Vietnam, and China due to decreases in population and TB case rates. Non-recent entrants also experienced an unexpected decline, highlighting the need for strategies impacting both groups to further reduce TB morbidity.
A study published in PLOS ONE analyzed the oxygen, strontium, and carbon isotope ratios in 105 Roman skeletons to determine their geographical origin and diet. The researchers found evidence of migrants from North Africa and the Alps, mostly children and men, whose diets likely changed significantly upon arrival.
Researchers found a 33% reduction in malnutrition incidence when children were given ready-to-use therapeutic food, compared to control groups. Supplementation with micronutrients showed no significant benefit.
Researchers in Madagascar found high levels of insecticide resistance in the flea vector for plague, with only one out of 12 insecticides effective across all populations. The study suggests that different geographical regions require different treatment approaches to effectively combat the spread of the disease.
Researchers designed a new compound HB36.6 to target the HA stem region of influenza viruses, offering broad-spectrum protection against different strains. The study found that HB36.6 provided better protection than Oseltamivir and showed synergy when combined with low-dose post-infection treatment.
A study found that gentoo chick aggregations help individual chicks save energy during wet, cold conditions, but differ between colonies, suggesting a colony-specific behavior.
Researchers found that enslaved Formica ant colonies were more genetically and chemically diverse than their free-living counterparts. This diversity is likely caused by seasonal raids to steal pupae from adjacent host colonies, leading to changes in how the ants recognize nest mates.
A study of rhinoceros bones reveals a significant increase in osteopathology as new species evolved, from 28% to 65-80%. The black rhino showed 50% fewer osteopathologies than derived extinct taxa, suggesting that long-term bone health may have been compromised by adaptations for increased mass and activity.
Research found patients with PD were more likely to have had a hip fracture or injurious fall in the years preceding their diagnosis. Individuals who suffered injurious falls were also at higher risk of being diagnosed with PD in following years.
Researchers examine the efficacy profile of anti-prion antibodies, finding that toxicity depends on factors such as antibody dose and binding region. The study suggests that antibodies targeting the flexible tail region of PrP may be more promising candidates for immunotherapy.
A study found that male hummingbirds drive female birds away from yellow-flowered plants, while females prefer red flowers due to male aggression. This competition may lead to the evolution of multiple flower forms to suit different pollinators.
Recent progress towards data sharing is discussed in PLOS Medicine articles, focusing on public health emergencies and clinical trials. The need for recognition of researchers who share data remains a challenge.
A study analyzing off-label promotion rulings in the UK and US reveals that the UK's self-regulatory mechanism may be ineffective in detecting and deterring off-label marketing. The authors suggest increasing protections for whistleblowers and introducing meaningful sanctions to address this issue.
A study found that older individuals and those with neuroinvasive disease have elevated and atypical T cell responses, promoting pathogenic outcomes. The researchers suggest that immune-mediated damage may contribute to neurologic symptoms in West Nile Virus infection.
Researchers used data from a national survey to model areas of high risk of Mansonella perstans infection and examine its overlap with other parasitic infections. The study found that forested areas and high densities of cattle are associated with increased levels of M. perstans infection.
A modeling study finds that gradual and countywide closures are most effective strategies in reducing influenza transmission, with lower social costs than nationwide closures. These approaches can contribute to limiting the impact of future pandemics.
The study reveals a low prevalence of T. cruzi parasites with limited genetic diversity, contradicting previous assumptions about the parasite's presence in the US. This suggests that local transmission of Chagas disease may be lower than previously thought, but also highlights the need for increased awareness and diagnosis.
A Neolithic Spanish burial site reveals a closely related local community from 6000 years ago, with at least 47 adults and adolescents buried in a megalithic tomb. The analysis suggests that the individuals farmed cereal crops and had family members buried side-by-side, indicating significant shifts in social identity.
A new carnivorous dinosaur species, Dracoraptor hanigani, has been uncovered in south Wales, potentially dating back to the earliest days of the Jurassic Period. The fossil, discovered in 2014, represents one of the most complete theropod specimens from Wales and may be one of the oldest known Jurassic dinosaurs in the UK.
A new genus of tree hole breeding frogs, Frankixalus, has been identified in India, featuring gel-encapsulated eggs and tadpoles that devour their mother's eggs. This discovery highlights the evolutionary distinctiveness and unique life history features of this lineage.
Young baleen whale calves have significantly lower myoglobin levels than adults, but these levels increase as they mature. Exercise has been shown to influence the rate of myoglobin accumulation in young baleen whales, potentially explaining their high activity levels during early development.
A cohort study found a bidirectional association between intimate partner violence and depression among pregnant women and new mothers in South Africa. The study suggests that combination interventions addressing both violence and mental health may be effective in interrupting the cycle.
A year-long intervention in 21 Australian towns showed a significant reduction in weight gain among women, with an average loss of nearly 0.44 kg compared to +0.44 kg in the control group. The study suggests that simple health messages can be an effective strategy for preventing weight gain in rural communities.
A study published in PLOS Biology found that 17% of monitored species populations increased, while 22% remained constant and 22% decreased in tropical forest protected areas. The results suggest that these areas can effectively maintain biodiversity, contrary to previous reports of declining species numbers.
Researchers studied healthy volunteers' brain activity while receiving propofol, a commonly used anaesthetic. They found that differences in 'brain signature' - measured by alpha waves and delta-alpha coupling - predicted individual responses to the drug.
A recent study published in PLOS Pathogens reveals that monocytes, immune cells central to inflammation, contribute to age-associated inflammation and impaired anti-pneumococcal function. Lowering TNF levels may be an effective strategy to improve host defense against pneumonia in older adults.
A recent study published in PLOS ONE suggests that the bacteria that causes plague, Y. pestis, may have persisted in Europe for over 300 years, including during the 'Black Death' pandemic. The researchers analyzed ancient DNA from 30 plague victims and found evidence of long-term persistence in a yet unknown reservoir host.
Researchers found that Brazilian torrent frogs employ a complex repertoire of acoustic and visual displays for communication, including hand, arm, and body movements. The study indicates that this frog species has one of the most diverse repertoires of visual and audio displays known to frogs.
A simplified three-dose intramuscular (i.m.) artesunate regimen has been shown to be non-inferior to the World Health Organization (WHO)-recommended five-dose i.m. or i.v. regimen for treating severe malaria in African children. The study, published in PLOS Medicine, found that 78% of children treated with the simplified regimen had ov...
Researchers identify LMIT1, a mitochondrial iron transporter in Leishmania parasites, as crucial for parasite virulence. Inhibiting LMIT1 function can abolish parasite virulence and reduce disease severity.
A study found that leopard sharks with impaired smell took longer and more tortuous paths than those with intact smell during ocean navigation. This suggests that olfaction plays a significant role in guiding these fish through the ocean.
Scientists have confirmed that killer whales in the Pacific Northwest mainly eat Chinook salmon and coho salmon during their summer diet. The study analyzed DNA from feces to estimate the whales' diet composition, providing new insights into their ecological interactions.
A recent study published in PLOS Biology reveals that TDP-43's normal function involves pathologic aggregation, and mutations tilt the balance toward aggregation. The research discovered a region of the protein that promotes its association with membranes, increasing aggregation propensity.