A 28-year study of Japanese-American men found that growing up in a large family or being born later in the family increased the risk of developing gastric adenocarcinoma. The results suggest that early-life social environment plays a significant role in microbially induced malignancies expressed decades later.
A new study uses visual immunoprecipitation to reveal the regulation of microtubule dynamics via coordinated changes in protein interactions. Microtubules become dynamic during mitosis due to the release of a destabilizer molecule.
A study found that industry funding can lead to biased research outcomes, with favorable results more likely for funded products. This bias may undermine the integrity of nutrition research, affecting public health decisions.
Researchers have developed a new 3D scaffold made of protein nanofibers that can support the growth and differentiation of stem cells. The scaffold provides a more accurate representation of the natural context of cells in tissues and organs, and has the potential to replace traditional Petri dishes for growing cells.
A study of Finnish working-aged adults found that pet ownership is associated with a higher risk of illness and lower physical activity levels. Dog owners did exhibit increased physical activity compared to non-dog owners, however this was not enough to offset the negative health effects of pet ownership.
A new study proposes that HIV regulates latency by introducing a resistor into its main transcriptional activator, Tat. The model suggests that this simple switch acts as a 'feedback resistor' to prevent stray transcription and maintain dormancy.
Researchers used structural biology techniques to probe the molecular mechanisms of the major drug efflux pump in E. coli, AcrB. The study confirms that AcrB is split into three subunits with differently shaped substrate transport channels.
Wound botulism is a potentially fatal illness caused by Clostridium botulinum spores contaminating wounds. A case study published in PLoS Medicine reports a man's full recovery after prompt diagnosis and treatment with ventilator support and botulinum antitoxin.
A study published in PLoS Medicine identified four clinical features that can predict the likelihood of death in severely malnourished children. These signs include slow heart rate, weak pulse volume, depressed level of consciousness, and delayed capillary refilling time. The researchers proposed using these indicators to identify high...
A novel compound, tazopsine, isolated from a Madagascan plant has shown activity against the liver stages of human and mouse malaria. Its semisynthetic derivative, NCP-tazopsine, completely protected mice from malaria parasites, suggesting a promising new candidate for anti-malarial prophylaxis.
A systematic review found that over half of health-care workers in low- and middle-income countries have latent TB. The disease rates among HCWs were substantially higher than those in the general population. Research is needed to determine if control measures that reduced transmission in high-income countries will work elsewhere.
A world health insurance scheme could address shared responsibility and progressive realization issues, providing a framework for rich states to assist poor states. The proposed model is based on the Global Fund's success in securing long-term funding for health interventions.
A study published in PLoS Medicine finds that male circumcision significantly reduces the risk of HIV infection, resulting in cost savings for healthcare systems. The analysis suggests that circumcision could be a cost-effective strategy for preventing HIV/AIDS in sub-Saharan countries.
The campaign, which used humorous cartoon strips to encourage syphilis testing, was associated with an increase in syphilis tests and improved knowledge about the disease. Researchers found that awareness of the campaign led to greater knowledge about syphilis and increased recent testing for the disease.
Neural stem cells can be engineered to deliver anti-cancer drugs to metastatic cancer cells, potentially treating disseminated cancer. Researchers successfully eradicated metastases in a mouse model of neuroblastoma using this approach.
Researchers discovered that propranolol decreases erythrocyte G protein activity and inhibits blood-stage malarial parasite growth in red blood cells. The study suggests using propranolol in combination with existing antimalarials to reduce treatment doses, providing a novel antimalarial target and potential treatment strategy.
A study in PLOS ONE finds that genetically variable wolves are more likely to be recruited into the breeding population, reducing the negative effects of inbreeding. This means the accumulation of inbreeding's negative effects will occur much slower than previously believed.
Scientists discovered that stomata open independently of neighboring stoma behavior, optimizing water loss and CO2 acquisition. The laser study found that phototropin1 release triggers stomatal opening, influenced by light-induced changes in the cell interior.
Researchers at City of Hope and St. Jude Children's Research Hospital developed a modified neural stem cell therapy that activates chemotherapeutic drugs primarily at tumor sites, sparing normal tissue. The approach showed promise in treating solid tumors, including neuroblastoma, with improved survival rates.
Researchers successfully regenerated tooth root and supporting periodontal ligaments using stem cells harvested from wisdom teeth. The technique shows promise for restoring tooth function in human patients.
A Mayo Clinic researcher has identified a target site in malaria-carrying mosquitoes that could be used to develop pesticides toxic to the Anopheles gambiae mosquito and other species. This finding could lead to a safer and more effective method to control mosquito-borne diseases like malaria.
A study published in PLoS ONE suggests that a mere 5% increase in cognitive reserve can prevent one-third of Alzheimer's cases. The research supports the notion that public health policies focused on education are likely the best strategy for preventing Alzheimer's disease.
Researchers found that Mycobacterium tuberculosis can hide in adipose cells, protecting it from the immune system and antibiotics, and may remain dormant for years. This discovery sheds light on possible strategies for fighting tuberculosis, highlighting the need for new targeted therapeutic weapons.
A study led by UCL demonstrated that participants reacted as though the situation was real when administering 'electric shocks' to a virtual human. The results show that virtual environments can provide an alternative way of pursuing laboratory-based experimental research that examines extreme social situations.
Researchers demonstrate that a combination of epigenetic drugs can reactivate the expression of over 1,000 genes in primary tumours of breast cancer patients. These reactivated genes play crucial roles in cell proliferation, differentiation, and immune recognition, suggesting increased anti-tumour effects.
A new study published in PLoS ONE found that men arrested for buying sex from prostitutes are less likely to continue their prostitution activity. The research suggests that simply arresting and prosecuting clients may be enough of a deterrent, making additional interventions unnecessary.
PLoS ONE is launched by the Public Library of Science, a new open-access journal that employs pre- and post-publication peer review. The first issue features 100 peer-reviewed articles covering various topics, including evolution, rabies control, mimicry, and Alzheimer's disease.
A survey in southern Sudan found a high prevalence of blindness, with 4% of the population affected. The main causes were cataract and trachoma, with trachoma being more common than expected. Trachoma can be prevented with improved living conditions, hygiene, and early treatment.
Research shows that patients with systemic lupus erythematosus (SLE) who have anti-NMDA receptor antibodies may experience amygdala damage, leading to altered emotional responses. The study suggests a link between the immune system and brain function in SLE.
Researchers have discovered a new class of genetic mutations in the EGFR gene that occur in glioblastoma, a deadly type of brain tumor. These mutations, located in the extracellular domain of the protein, can activate oncogenically EGFR, making them a potential target for cancer therapy.
A new study suggests that hyaluronate application may reverse skin atrophy, which is more common in older individuals due to the gradual loss of epidermis and dermis. The study found that hyaluronate fragments restore skin thickness and suggest a potential therapeutic approach for this condition.
A study of 2737 medical residents found that extended work shifts are associated with increased reporting of medical errors, adverse patient events, and attentional failures. Doctors working long shifts reported a seven-fold higher risk of adverse patient events compared to those who didn't work extended hours.
Researchers identify palladin as the first familial pancreatic cancer gene, linked to a large family with 18 members affected by the disease. The mutated gene is associated with overexpression and disruption of cytoskeletons in cancer cells.
A study found that TV viewing and low physical activity are associated with increased risk of metabolic diseases in children. However, physical activity was inversely related to blood pressure, glucose, insulin, triglycerides, and overall risk score. Preventive action may need to target both TV viewing and physical activity separately.
A clinical trial has found that a combination of nifurtimox-eflornithine offers a cure rate over twice that of current treatments for second-stage African trypanosomiasis. This combination also resulted in lower rates of adverse events, suggesting potential as a future therapy.
A study published in PLoS Medicine found that HIV treatment does not restore memory T cells in most people, despite years of antiviral therapy. The researchers discovered that intestinal immune cells remained low and elevated immune activation persisted, suggesting potential clinical problems over time.
Researchers discovered that groupers and giant moray eels work together to hunt prey, sharing roles and coordinating behavior. This mutually beneficial arrangement highlights the complexity of fish social interaction and challenges our understanding of animal intelligence.
A new global malaria map is being developed to address the lack of accurate information on malaria endemicity, which will enable targeted treatment and resource allocation. The Malaria Atlas Project uses statistical approaches to fill in gaps in data and create a comprehensive map of malaria risk worldwide.
A new study analyzed 413 complete influenza genomes from New York State, showing genetically distinct viral strains circulate across the state and exchange genes through reassortment. Adaptive evolution in influenza virus is strongly affected by chance events, making predicting future patterns more difficult.
The HIV/AIDS epidemic will hinder efforts to reduce extreme poverty and hunger, improve maternal health, and tackle infectious diseases. Researchers estimate that the epidemic could lower national GDP by up to 1.5% annually, with a greater impact on economic development in Africa.
Researchers have improved understanding of a new malaria treatment using artesunate suppositories, which show potential as a first-line treatment for moderately severe malaria. However, patients vary in how well they process the drug, highlighting the need for further clinical studies.
A new study reveals that human behavior can trigger a 'rarity effect' in endangered species, driving them into an extinction vortex. This phenomenon resembles the Allee effect, where low population densities increase extinction risk. The pursuit of rare species for luxury items or social status exacerbates this effect.
Between 2002 and 2030, life expectancy is expected to increase globally, with fewer child deaths under 5 years old. However, HIV/AIDS deaths are projected to rise, while tobacco-related diseases surpass them in prevalence.
Researchers found that adult-born hippocampal neurons have similar properties to mature neurons, including excitatory and inhibitory input responses. This suggests that these cells can form connections indistinguishable from those developed in early life, potentially leading to new treatments for brain disorders.
The iPLEDGE program, an internet-based system, aims to prevent birth defects caused by isotretinoin by verifying pregnancy prevention measures. By ensuring that patients provide documentary proof of non-pregnancy and contraceptive use, the program significantly reduces the risk of birth defects associated with isotretinoin treatment.
A systematic review of HIV medication adherence factors reveals common barriers in both developed and developing countries, as well as unique challenges in resource-constrained settings. Facilitators of adherence include having a sense of self-worth, simplicity of regimens, and reminder tools, but no such facilitators were identified i...
The study found a potential increased risk of cardiovascular events among elderly individuals taking naproxen, while celecoxib showed no significant risk. The results contribute to the larger body of evidence on the safety of these non-steroidal anti-inflammatory drugs.
Research suggests that women in their first pregnancy with placental malaria are three times more likely to develop preeclampsia. High levels of sVEGFR1 and VEGF were found in these mothers, indicating a conflict between the mother's and fetus's immune responses.
Researchers used fruit flies to study the genetic basis of species differences, finding that small changes in control regions of genes can result in morphological differences and potentially even the creation of a new species. The study highlights the importance of regulatory sequences in gene evolution.
A study by Jane Kim and colleagues suggests that introducing a once-in-a-lifetime screen for cervical cancer can provide opportunities to offer additional health checks, such as depression treatment and anemia screening. The optimal package of health services balances monetary limitations and personnel shortages, maximizing health bene...