A new study identifies a genomic fragment that reduces the effect of a type 2 diabetes risk gene in mice. The researchers found that this fragment, known as a 'jumping gene,' diminishes the activity of the risk gene Zfp69. In overweight individuals with diabetes, the human equivalent of this gene is highly active.
A study published in PLoS Biology reveals that fruit flies can detect and avoid the plant toxin L-canavanine using a modified glutamate receptor called DmXR. This detection is crucial for their survival, as consuming the toxin can lead to reproductive failure.
Seasonal hunger is a widespread issue, affecting nearly seven out of ten hungry people globally. Proven interventions exist to alleviate this problem, but they often operate on a small scale and need scaling up.
The World Health Organization estimates that 2.8 billion people will face water stress or scarcity by 2025. Access to clean water can reduce global disease burden and is essential for health.
A clinical trial in Sri Lanka found no significant improvement in survival rates among patients treated with the WHO-recommended antidote pralidoxime, suggesting it may be harmful. Further trials are needed to explore the risks and benefits of oximes and dosing regimens.
Researchers found rare copy number variations in genes of children with autism spectrum disorders but not healthy controls. The study identified two novel genes, BZRAP1 and MDGA2, thought to be important in synaptic function and neurological development.
Researchers identified a small set of genes responsible for mental retardation by comparing human DNA with mouse genome disruption data. The study found that genomic deletions and duplications frequently cause the disorder, enabling genetic testing and diagnosis.
The study assesses the effectiveness of world fisheries management regimes using evaluations from nearly 1,200 fisheries experts. It reveals that most regimes are not meeting international standards and that transparency in converting scientific advice into policy is key to sustainability. Wealthier countries face challenges from exces...
A recent study published in PLOS Medicine reveals that inflammatory markers are more strongly associated with fatal than nonfatal cardiovascular events in elderly individuals. The study found that elevated levels of IL-6 and other inflammatory markers were linked to a higher risk of fatal heart attacks and strokes.
A new software program uses mathematical modeling to prescribe optimal light exposure for avoiding jet lag, resulting in quicker re-synchronization and improved performance. The method considers background light levels and time zones traveled, providing personalized recommendations for bright light intervention.
Researchers have gained insight into the regulation of aquaporins in yeast cells, revealing a previously mysterious region that acts as a gate controlling water flow. This discovery may lead to the development of inhibitors for human aquaporins, which could slow down cancer tumor growth.
Research by Sievert Rohwer and colleagues reveals that maximum body size in birds is constrained by the molt process. As bird size increases, feathers wear out before they can be replaced, requiring alternative strategies to maintain aerodynamic support. This fundamental relationship ultimately limits the size of flying birds.
Researchers at Carnegie Mellon University have identified a novel regulatory gene network that plays a crucial role in the spread of invasive yeast infections. The study reveals that Zap1 protein regulates the production of biofilm matrix, promoting infection and drug resistance.
In a study on female water striders, researchers found that females use morphological shields to protect their genitalia from male attempts at copulation. In response, males produce a courtship song by tapping the water surface, allowing females to expose their genitalia only after receiving the signal.
A study analyzing the mutator hypothesis found that cancer cells' efficient pathways to cancer are often driven by genetic instability, supporting the hypothesis. This discovery has implications for cancer therapy, as it may enable cancer cells to rapidly evolve resistance.
Researchers in France and Austria have created a strain of plant called MiMe, which produces genetically identical pollen and eggs through mitosis instead of meiosis. This breakthrough has the potential to simplify the creation of stable new mutant crops, paving the way for more efficient crop improvement and propagation.
A new study finds that low-income conflict-affected countries such as Afghanistan and Somalia receive significantly less aid for reproductive health compared to non-conflict-affected countries. The researchers found that an average of just $509.3m (2.4%) was allocated to reproductive health out of a total of $20.8 billion annually.
A new study suggests that genetic variations in humans are more closely tied to geographical and historical factors than previously thought. The research found that gene variants tend to be distributed throughout the world in patterns reflecting ancient population movements and other aspects of population history.
Researchers found that bats can distinguish between each other's vocalizations, which may aid in social behavior and recognition. This discovery has significant implications for our understanding of bat behavior and social interactions.
Agricultural Research Service scientists have sequenced the genome of a parasite that can kill honey bees, providing new insights into colony collapse disorder. The microsporidian parasite produces spores that bees consume when foraging, leading to infection and colony loss.
Researchers analyzed fossil teeth from two sites in Florida representing different climates and found dramatic changes in mammalian diets during interglacial periods. The study suggests that climate-driven environmental changes can lead to shifts in animal groups' dietary niches, complicating future modeling of mammal distributions.
PTEN is often inactivated in breast cancer, leading to poor patient outcomes. Researchers found that a drug called perifosine specifically targets the breast cancer stem cell population by inhibiting the Akt pathway, reducing tumor-forming cells by up to 90%.
A nationwide French public health campaign from 2002 to 2007 led to a marked reduction of unnecessary antibiotic prescriptions, particularly in children, with a decline of over 25% compared to the preintervention period. The greatest decrease was observed among young children aged 6–11 years.
A new species of malaria parasite, Plasmodium gaboni, has been discovered in chimpanzees in Central Africa. The parasite is closely related to the human malaria agent Plasmodium falciparum and sequencing its nuclear genome may help discover new potential drug targets.
Researchers have identified a genetic mutation in mitochondrial DNA that causes sensory ataxic neuropathy (SAN) in Golden Retriever dogs. The mutation leads to progressive loss of neurons, affecting about five percent of the current Swedish Golden Retriever population.
A meta-analysis of surveys suggests that altering or making up data is more frequent than previously estimated, particularly in medical research. Up to 14% of respondents knew someone who had fabricated or falsified data, and up to 72% knew someone who had committed other questionable practices.
A new study found that lymph nodes are not necessary for the immune system to respond to infections. Instead, the liver can serve as a surrogate structure for T-cell activation. This discovery suggests an alternative role for the liver and may explain why patients receiving a liver transplant sometimes inherit the donor's allergies.
Scientists have discovered that high CO2 levels are causing ocean acidification, leading to reduced shell growth and calcification in shellfish. Eastern oysters are particularly susceptible, with a 16% decrease in shell area and 42% reduction in calcium content.
A recent study in PLoS Biology has identified the crucial role of cohesin proteins in human gene expression, shedding light on Cornelia de Lange syndrome. The research found that dysregulation of cohesin affects hundreds of genes, leading to unique gene expression profiles.
Researchers found that Kaposi's sarcoma-associated herpesvirus uses polyadenylation to block normal gene expression in cells. The virus' SOX protein aberrantly lengthens mRNA poly(A) tails, sending a signal to the cell that its messages are wrong and holding them back.
Scientists at the University of Iceland and Marine Research Institute report a significant difference in Darwinian fitness between shallow-water and deep-water adapted cod. The study found that intense habitat-specific fishing pressure led to rapid elimination of shallow-water fish, drastic effects on populations and fisheries.
A new paper reveals that there are more genetic differences between humans and mice than previously thought. One-fifth of mouse genes are new copies that have emerged in the last 90 million years of mouse evolution.
Research and policy making must align to promote better sexual health, addressing curable and incurable STDs, lack of access to services, and unsafe abortion. The US healthcare system faces a significant burden of disease from 19 million new STD cases annually.
The vaccine-autism debate persists despite scientific consensus, fueled by internet misinformation and declining public trust. Pediatrician Paul Offit's efforts to set the record straight have been hindered by celebrity anti-vaccine advocates like Jenny McCarthy.
A 4000-year-old skeleton from India reveals the earliest archaeological evidence of human infection with Mycobacterium leprae, shedding light on prehistoric transmission routes and challenges popular misconceptions about the disease. The findings support a hypothesis that leprosy spread between Africa and Asia during urbanization periods.
Researchers at Cancer Research UK have developed a way to regulate viral activity in cancer cells while minimizing its impact on healthy tissues. By introducing microRNA molecules, they can 'turn off' the virus in vulnerable areas, making it a promising approach for improved cancer treatments and vaccines.
Scientists discovered that a substance secreted by damaged skin can trigger asthmatic symptoms in mice exposed to eczema-causing agents. Early treatment of skin rash and inhibition of the trigger substance may block asthma development in young patients with eczema.
Researchers discovered that corticosteroids reduce allergic inflammation by inhibiting the nuclear translocation of GATA-3, a key regulator of cytokine expression. This finding may lead to new treatments for allergic diseases, targeting interaction between phosphorylated GATA-3 and importin-α.
Subordinate female cichlids receive reciprocal benefits for helping dominant pairs raise offspring, increasing their reproductive potential. This finding suggests a 'pay-to-reproduce' hypothesis, where subordinates adjust their care to gain access to breeding substrate and enhance their own reproduction.
Researchers found that giving rats living in isolation the opportunity to build nests led to faster and more complete healing of burn injuries than isolation-reared rats without nest-building materials. This effect was associated with altered gene expression in stress-associated brain structures.
Indonesian zebu cattle have a unique origin with banteng (Bos javanicus) as part of their ancestry, adapted to tropical climates. The study shows that many famous 'racing bulls' from Madura descended from banteng cows.
Researchers argue that providing free drug samples to patients is ineffective in improving access for the indigent, promotes irrational prescribing habits, and raises healthcare costs. The practice also leads to misused samples being distributed to those who cannot afford them, compromising health care quality.
Researchers found that entomopathogenic fungus Beauveria bassiana is virulent against Triatoma infestans, the primary vector of Chagas disease. The fungus successfully killed over 50% of infected bugs in field assays, reducing bug populations and estimated parasite transmission risk.
A recent PLOS Medicine study examines the effects of electronic health records (EHRs) on medical education. Two groups of researchers present contrasting views: one arguing that EHRs may erode physician education due to potential risks, while another highlights opportunities for enhanced clinical skills and patient communication.
Taking folic acid supplements for at least a year before conception reduces the risk of premature birth by 70% and 50%, according to a large cohort study. The findings suggest that folic acid supplementation may be an effective prevention method for premature birth.
Researchers have discovered that yeast cells can extend their lifespan by up to 5-fold when converted to use glycerol instead of glucose for energy, offering an alternative to caloric restriction. This metabolic switch also enhances the cells' resistance to damage and may provide insights into human aging.
Researchers found that clusters of schistosomiasis infections occurred in the same areas ten years after a control program ended. Long-term stability in spatial distribution suggests reviewing historic data can aid planning targeted control programs.
A new gene called DEAR1 has been found to be genetically altered in breast tumors and may provide a new prognostic marker for breast cancer patients, particularly those with early-onset cancer. The research suggests that DEAR1-negative staining could help identify young women at high risk of cancer recurrence.
A new study suggests that human behavior, such as installing large domestic water tanks, may enable the dengue mosquito Aedes aegypti to re-emerge in Australia and expand its range of possible infections. By 2050, the risk of dengue fever is expected to be high in all capital cities around the country.
Researchers suggest using a small stockpile of a secondary antiviral drug to delay the development of resistance to primary drugs in flu pandemics. By treating only 1-1.5% of the population with a secondary drug, resistance to primary drugs can be substantially reduced.