A computer model developed by researchers at the Catholic University of Leuven can predict the oxygen concentration inside pears, leading to a better understanding of internal browning. The model suggests that extremely low oxygen concentrations in the core of the pear can lead to cell death and browning.
Researchers found that body movements reflect confidence in learning tasks using the Wiiimote, suggesting a link between cognition and action. The study provides new evidence for the deep interconnection between mental processing and bodily movement.
Researchers found that tobacco hornworm caterpillars could be trained to avoid specific odors, and adult moths emerged from the pupae of these caterpillars also avoided the same odors. The study suggests that memory retention is dependent on the maturity of the developing caterpillar's brain.
A new study reveals schistosomiasis japonica has a substantially higher disability impact, estimated to be 0.098-0.186 DALY, compared to the current low estimate of 0.005. This finding suggests the disease burden may need to be revised, with policymakers needing to prioritize control measures.
Researchers have found that humans can filter out background noise and focus on a single speaker's voice due to unique temporal fine structures in voiced speech. Long-range inhibitory interactions in the auditory cortex enable this selective representation.
Researchers found that ancient sediment cores indicate the arctic tundra burned frequently in the past, with some fires occurring as often as every 30 years. A warming climate could make this type of burning more common, leading to increased greenhouse gas emissions and releasing stored carbon into the atmosphere.
An open-source clinical trial data-management system could save money and empower researchers in resource-poor settings. The system would eliminate the need for expensive database software systems, making high-standard research more accessible.
A new study investigates the genetics behind the symbiotic relationship between nitrogen-fixing bacteria and plants, finding evidence of specific genetic changes. The research suggests a common evolutionary origin of intracellular root symbioses with nitrogen-fixing bacteria in plants such as legumes and actinorhiza.
Researchers discuss the potential for developing new therapies for idiopathic pulmonary fibrosis by targeting abnormal embryonic pathways. The treatment imperative for cardiac interventions in older patients also drives this need for innovative treatments.
A new study published in PLoS Medicine shows that individuals who drink on a regular basis have a higher systolic blood pressure due to the ALDH2 gene variant. This association indicates that alcohol intake has an effect on blood pressure, particularly for Japanese men.
Researchers developed a zebrafish-based screening strategy to identify genes and chemical compounds that protect against hearing loss caused by ototoxic medications. The study identified five mutations in genes that, when inherited, protected hair cells from damage.
Computer simulations revealed that a defective gene causes cystic fibrosis by misfolding the CFTR protein. The study identifies critical amino acid pairs essential for proper protein folding, providing guidance for designing small molecule drugs.
A new study found that chickens have a different version of a gene that codes for white skin, but the yellow-skin variant is present in a completely different wild species, grey junglefowl. This discovery contradicts Charles Darwin's theory that all chickens came from a wild red junglefowl species.
Researchers have developed a new statistical model to clean up low-quality HLA data, enabling easier and more cost-effective individual immune system analysis. This advancement has significant implications for transplant medicine, disease diagnosis, and understanding viral evolution.
Researchers identified a hybrid gene in Asian monkeys that produces a protein capable of blocking HIV infection. This is the second time a similar TRIM5-CypA gene has been found in different monkey species, indicating convergent evolution.
Researchers found that genetic reassortment events led to the creation of new hybrid viruses in humans during severe influenza epidemics in 1947 and 1951. This challenges the standard model of human influenza virus evolution, suggesting a more complex co-circulation of multiple forms of the same strain.
A new study found that male European starlings exposed to environmental pollutants develop more complex songs, which are preferred by females, and show reduced immune function. The researchers also discovered an enlargement of the brain area controlling song complexity due to estrogen exposure.
Researchers found that bats use magnetite as an 'internal compass' to help them navigate. The study involved giving Big Brown bats magnetic pulses and observing their behavior.
A new article suggests that the United States government should convert Guantanamo Bay into a biomedical research institute dedicated to combating diseases of poverty. The facility could conduct research on developing new drugs and vaccines, promote clinical research, and serve as a training ground for physicians and scientists.
Research published in PLOS ONE found that the medial orbitofrontal cortex is highly specifically active within a seventh of a second in response to infant faces but not to adult faces. This finding has potentially important clinical application in relation to postnatal depression.
A new study published in PLoS Medicine suggests that antidepressants only provide clinically significant benefits for a small group of severely depressed patients. However, even among these patients, the improvement is not very great, and depressed people can still improve without chemical treatments.
Tropical disease experts believe African sleeping sickness could be eliminated with maintained control efforts, but risk of losing disease control capacity remains. The greatest challenge will be to increase and sustain existing control efforts using available tools.
A global malaria risk map has been released, revealing high-risk areas and providing estimates of people living in low-risk zones. The map identifies regions where existing control strategies can be used to eliminate P. falciparum transmission, potentially reducing deaths in sub-Saharan Africa.
A new study by Buck Institute researchers finds that high levels of MAO-B enzyme in mice lead to Parkinson-like symptoms. The findings suggest that humans with high MAO-B levels may be at risk for the disease and could benefit from preventive treatment.
Researchers argue that autistic savants' exceptional skills come at a cost in other aspects of processing, while animals process sensory inputs according to rules. This shared processing method is thought to be a specialized feature of the left hemisphere, common to both humans and nonhuman animals.
Researchers at Stanford University School of Medicine used human embryonic stem cells to generate neural cells that helped repair damage in the brains of rats and improved their physical abilities. The study showed promising results, with the transplanted cells forming only three families of neural cells and not forming tumors.
A new study shows that tumor blood vessels develop from precancerous stem cells, a type of cell that can become malignant. The findings suggest that screening anti-angiogenic drugs should include these cells to improve their effectiveness in blocking tumor growth.
The researchers have developed the first animal model of the chikungunya virus infection, which allows them to study the pathophysiology of the disease. The mouse model reveals that young age and inefficient type-I interferon signaling are risk factors for severe disease.
A new study found that young children in impoverished regions are disproportionately affected by cholera. The study, published in PLOS Neglected Tropical Diseases, reveals the African site had the highest incidence of cholera, with vaccination and improved water supply considered immediate strategies.
A study found that in sub-Saharan Africa, more women die from treatable infectious diseases like HIV/AIDS and malaria than from pregnancy-related complications. Effective treatment and prevention measures can greatly reduce maternal mortality rates.
A study published in PLoS Medicine found that CD36 deficiency leads to choroidal involution, a key feature of dry age-related macular degeneration. The research also showed that COX-2 down-regulation plays a crucial role in this process.
Researchers developed a model of brain function that shows how eye movement signals boost neural representation of objects at future gaze positions, compromising spatial accuracy. This results in the perception of details before looking at an object, making the world appear stable while eyes move.
A genetic variant in the Reelin gene significantly increases the risk of developing schizophrenia in women, according to a recent genome-wide association study. The study analyzed DNA from patients with schizophrenia and healthy controls across multiple populations, identifying a common variant that affects women only.
New research suggests the Americas were colonized by approximately 1,000-5,000 people, with a 20,000-year layover in Beringia, where population size remained relatively stable. This three-stage colonization model provides a more complex scenario than previous theories, shedding light on the timing and scale of the initial migration.
Researchers found that a tropical rainforest bird uses different song features to signal species identity and individual information, tailored to the environment's acoustic properties. The study suggests efficient local communication networks are established in the habitat.
Recent decades have seen a significant shift in oil palm research, with an increasing focus on the environment and biofuel production. However, biodiversity assessments remain scarce, particularly for insect species that carry out key ecosystem functions.
A collaborative study found that fake anti-malarial drugs, containing potentially toxic ingredients, were manufactured in China. The counterfeiters included dangerously small amounts of artesunate to fool screening tests, but these doses are too low to treat malaria effectively, encouraging the spread of resistant parasites.
A new molecular signature predicts response to lenalidomide in patients with myelodysplastic syndrome without chromosome 5q deletions. Gene expression profiling identifies a defect in erythroid differentiation, providing potential treatment insights.
A new study reveals that farmed salmon exposure leads to significant declines in wild salmon survival rates, threatening global salmonid populations. The research found a 50% reduction in wild salmon abundance when associated with salmon farms, highlighting the need for sustainable aquaculture practices.
A recent study found that many interactions detected by ChIP-chip are functionally irrelevant. The researchers discovered a clear relationship between the number of factor molecules bound at a given site and its role in gene regulation, suggesting that DNA sites with low-level binding may play no role in regulating gene expression.
A new study reveals that well-meaning efforts to protect cougars in Washington State have actually increased dangers for the species. Biologists are now scrambling to find a science-based path to coexistence between people and predators.
Researchers have reidentified the main cause of necrotic enteritis in chickens as Clostridium perfringens, producing extracellular toxins that attack the bird's intestines. The discovery of a new toxin, NetB, has led to hope for the development of effective vaccines within two years.
A new study published in PLOS Neglected Tropical Diseases found that social marginalization is a stronger predictor of American Cutaneous Leishmaniasis (ACL) incidence than deforestation. The research showed that socially marginalized human populations are more vulnerable to infection, even in highly deforested counties.
A comprehensive survey of 51,000 chickens found that intensive rearing methods lead to leg health problems, affecting over 27.6% of birds at 40 days old. The study highlights the need for alternative management practices to reduce growth rates and improve welfare.
A new study reveals that human economic activity is a primary driver of invasive fish species in rivers and lakes. The research found no correlation between native species and invasive species, highlighting the need for conservation efforts to protect aquatic ecosystems.
Researchers estimate that preventing obesity could reduce healthcare costs for healthy individuals due to their longer lifespan and reduced risk of chronic diseases. The study found the opposite: obese individuals and smokers had lower lifetime healthcare costs compared to healthy non-smokers.
Young infants can detect small changes in the number and identity of objects, and these abilities are processed by distinct neural pathways. The study found that the infant brain responds to both changes in different brain regions, similar to adults.
A new study suggests that antiretroviral drugs used to treat HIV can also protect people from getting the AIDS virus, especially when two drugs are taken in combination before exposure to the virus. The best protection was seen in macaques that received a combination of two drugs, with all being protected from infection.
Researchers found that increasing ER calcium levels partially restored mutant lysosomal enzyme homeostasis in cell lines. Diltiazem and verapamil, L-type Ca2+ channel blockers, achieved this through a Ca2+ ion-mediated upregulation of chaperones, potentially treating neuropathic storage diseases.
A study published in PLoS Computational Biology suggests that serotonin may contribute to depression and anxiety by disrupting reflexive avoidance behaviors. When serotonin levels drop, individuals lose their instinctual ability to avoid aversive events, leading to increased exploration of potentially harmful states.