A study in PLoS Medicine found that US suicide rates fell from 12.2 to 10.4 per 100,000 between 1960 and 2002, coinciding with an increase in fluoxetine prescriptions from 1988 to 2002. The researchers suggest that fluoxetine may have saved up to 33,600 lives during this period.
A study comparing Japanese American and white male patients who received hormone treatment for prostate cancer found that the former had a significantly higher five-year overall survival rate of 66% compared to 42%. The result was not affected by cancer stage or PSA levels, suggesting genetic and lifestyle factors may play a role.
A study investigates how methamphetamine use affects children's psychological development and behavior, revealing that despite traumatic experiences, many focus on losing their parents rather than the drug itself. The researchers developed materials for foster parents and child-welfare workers to help these children recover.
Researchers found that individuals with a single copy of the parkin gene mutation exhibit an average age of onset around 43 years old. This discovery challenges current understanding and highlights the need for further investigation into the role of partial parkin gene expression in Parkinson's disease.
Patients who developed heart failure had almost four times the increase in risk of death during follow-up. Implantable defibrillators increased the risk of first hospitalization for heart failure and recurrent hospitalizations by 39% and 58%, respectively.
Researchers identified a shared causative mechanism among malignant melanoma, soft-tissue sarcomas, and pediatric renal carcinoma, suggesting a common therapeutic strategy. The discovery centers on the MiT transcription factor family, which regulates growth genes and is abnormally expressed in these cancers.
The study found that environmental quality increases the heritability of birth weight, but selection strength weakens in better environments. This suggests that biologically realistic models are crucial for predicting evolution in wild populations.
Evolutionary biologist Jianzhi Zhang discovers parallel evolution of pancreatic enzyme RNASE1 in Asian and African colobine monkeys, showing identical amino acid changes despite separate duplication events. The study reveals a division of labor between old and new genes after duplication.
Researchers have developed a triple threat polymer that can capture and release fragrance molecules, demonstrating unique properties. The material's complex surface structure allows it to act as a host for guest molecules, enabling controlled release.
A research team led by Professor Nigel W. Fraser discovered that herpes simplex virus-1 (HSV-1) produces an miRNA molecule encoded by the LAT gene. This miRNA works through RNA interference to prevent normal cell death, maintaining latent infection for life. The study offers a new target for treatment against latent infections.
Cross-species DNA sequence comparisons can accurately identify human regulatory DNA sequences when comparing closely related species. The study used a uniform approach to assess the impact of evolutionary distance, finding sensitivity improved by 53-80% and true-positive rates ranging from 53-67%.
Researchers found that long-term reforestation of pastureland can generate nearly nine times more income than traditional cattle ranching, with federal subsidies offering an additional boost. This innovative approach offers a viable solution for landowners seeking to balance economic and environmental concerns.
Researchers found that scyllo-inositol prevented the accumulation of amyloid â deposits, a hallmark of Alzheimer's disease, and improved cognitive abilities in mice. The study suggests that scyllo-inositol may be an effective experimental therapy for Alzheimer's disease.
The study found that ACTOS reduced the number of patients on insulin and mean daily insulin dose, as well as delaying need for permanent insulin use. In high-risk patients with type 2 diabetes, these results could lead to less dependence on daily insulin use.
A study found that nearly one in seven patients who received a drug-eluting stent stopped taking their antiplatelet medication within the first 30 days, leading to a higher risk of death and hospitalization. The study highlights the importance of continued medication after stent placement for optimal outcomes.
A new study uses high-resolution genomic microarrays to detect small rearrangements in chromosomes that cause rare birth defects. The technology allows for rapid and precise diagnosis, providing a target for future therapies.
A study published in Pediatric Transplantation found that individuals with mental retardation have a 100% one-year survival rate and 90% three-year survivor rate after receiving kidney transplants. The research alleviates concerns about transplant success in this population, showing they are appropriate candidates for organ transplants.
A total of 34 cases of fungal keratitis were reported among soft contact lens wearers, with all cases caused by the fungus Fusarium. The average age of patients was 34.9 years, and most used ReNu brand contact lens solution.
A 16-week trial found that transcendental meditation significantly lowered blood pressure, improved insulin levels, and enhanced autonomic nervous system functioning. These effects occurred without changes in body weight or medication usage, suggesting a potential new target for treating coronary heart disease prevention.
A pilot study found that folic acid supplementation significantly increased mean folate levels and decreased homocysteine levels, leading to complete resolution of leucoplakia lesions in 28% of patients. The results suggest folate may effectively reduce cancer progression risk, especially in those with hypofolatemia.
Blocking the conversion of glucose to lactate in mammary tumor cells impaired mitochondrial function and hindered tumor cell proliferation in low oxygen conditions. Alterations in glucose metabolism are linked with changes in mitochondrial physiology, highlighting LDH-A's critical role in tumor growth.
A large study found that moderate coffee consumption was associated with a 22% lower risk of developing alcoholic cirrhosis. The study suggests that coffee may help explain the variability in cirrhosis risk among heavy drinkers, but more research is needed to understand the mechanisms behind this potential protective effect.
Researchers found that epigenetic treatment can induce microRNA-127, which downregulates the proto-oncogene BCL6. This may have an anticancer effect. Further studies are necessary to understand the regulation of miRNA expression in cancer.
Research in germ-free mice suggests that certain human gut microbes form strategic alliances to improve digestion of complex sugars, leading to increased fat storage. The study's findings highlight the importance of understanding individual gut microbial communities and their interactions with hosts.
The CALIPSO satellite will provide detailed information on atmospheric particles, including aerosols and subvisible cloudiness. The mission aims to establish the impact of these factors on climate change, with scientists expecting up to 10% coverage of the Earth's atmosphere to be a concern.
Research by Mark Graham found that pollen significantly enhances plankton growth in boreal lakes, supporting forage fish and potentially boosting sport fish populations. Climate change may impact this process, highlighting the importance of pollen in linking terrestrial and aquatic ecosystems.
Researchers at PLOS Medicine analyzed gene expression in labor and autoimmune disease APS1, finding complex networks of co-regulated genes. The study highlights the importance of making original data available for reanalysis.
The UK is investing in the ExoMars mission to explore the Martian surface and search for signs of past and present life. The mission will also study the planet's geochemistry, water distribution, and geophysics, aiming to identify potential hazards for future human missions.
A new study by Stanford Medicine researchers found that the first osteoporosis medication, teriparatide, is not cost-effective compared to alendronate. The researchers suggest that teriparatide should be given only to high-risk patients who don't tolerate standard treatments.
A new study reveals that post-operative radiation therapy improves overall survival in select lung cancer patients whose disease has spread to regional lymph nodes. This is the first significant increase in survival rate since previous studies used outdated equipment.
A new 'roulette wheel' tool can help patients visualize the risks and benefits of prostate cancer screening, allowing them to make more informed decisions. The tool presents probabilities in a clear and accessible way, helping patients weigh the potential benefits against the risks.
A long-term study of DCCT participants found no cognitive impairment from severe hypoglycemic reactions, supporting the safety of intensive diabetes therapy. Higher A1C readings were associated with a decline in motor speed and psychomotor efficiency, but not other cognitive domains.
Researchers found that synapses act as fine-tuned filters, amplifying meaningful patterns and eliminating stray noise. Synaptic transmission is highly temperature-dependent, and the two types of synapses work together to identify patterns carrying relevant information.
William H. Herman suggests that glycosylated hemoglobin test may not be suitable for making diabetes diagnosis, and instead recommends blood glucose tests after a special sugary drink for accurate diagnosis. Population-level studies show how screening can optimize detection of impaired glucose tolerance and prevent diabetes complications.
Researchers found that 48% of participants reported no or very little microvascular complications, and that some patients still have residual islet function. The study suggests that many patients with long-term type 1 diabetes may have some residual insulin production, paving the way for new treatments.
A new study published in PLoS Medicine analyzes federal data on US suicide rates and sales of the antidepressant fluoxetine since its introduction in 1988. The research found that suicide rates dropped steadily over 14 years as sales of fluoxetine rose, with the strongest effect among women.
Researchers found that individuals with one mutated parkin gene and one normal gene (heterozygotes) developed Parkinson's disease 11.7 years earlier than those with no mutations, indicating a stronger genetic effect than previously recognized.
A fake malaria drug, artesunate, was found to be contaminated with only 20% of the active ingredient, leading to the death of a 23-year-old man in East Burma. The study highlights the risks of counterfeit antimalarial medicines in Africa, where genuine artesunate is scarce and expensive.
The 2006 winners of the NWO/Spinoza Prize are Prof. J.M. Bensing for her work on doctor-patient communication, Prof. C.G. Figdor for his pioneering dendritic cell therapy, Prof. B.J.G. Scheres for discovering stem cell role in plant roots, and Prof. J.J. Zaanen for high-temperature superconductivity research.
A University of Toronto study analyzing 138 attacks during the second intifada found that revenge and retaliation were the primary motivators, with bombings not achieving strategic gains for Palestinians. The study also revealed that Israeli actions, such as killings, often prompted attacks, highlighting a cycle of violence.
A new study reveals that both young people and older individuals think older people are happier than themselves, but research shows the opposite is true. The study found that individuals tend to mis-remember their own happiness as youths and overestimate their future happiness in old age.
A recent study found that differences in HD types across regions play a major role in determining regional survival rates. Analysis revealed no significant difference in mortality risk between EUROCARE-west and the US SEER databases when adjusting for morphology, but morphology accounted for differences in EUROCARE-UK and EUROCARE-east...
Researchers found that leptin suppresses appetite in tadpoles, but not as it does in other animals, allowing them to continue eating and developing limbs. The study reveals a new role for leptin in frog development and highlights its importance in regulating energy balance.
The study finds that HIV/AIDS has a substantial impact on both armed forces and peacekeeping troops worldwide, compromising their effectiveness. Increasing rates of HIV in Russia, India, and China could lead to political, economic, and military repercussions, potentially diverting resources away from the fight against HIV/AIDS.
The NIH has launched an effort to make more knockout mouse models widely accessible to the biomedical research community. The initiative aims to deposit existing knockout mouse lines into public repositories, increasing their availability and accelerating the development of new strategies for understanding and treating human disease.
Three new studies help diagnose psychological seizures by identifying key behavioral cues, such as eye movement during seizures. These findings could guide early diagnosis and improve patient outcomes.
The Gerontological Society of America awarded 16 students with stipends to attend workshops on research skills at the 2006 Annual Scientific Meeting in Dallas, TX and San Francisco, CA. The GSA, founded in 1945, supports over 5,000 researchers, educators, and professionals advancing gerontological research.
Researchers found genetic markers revealing the origins of two major rice types grown today: Oryza sativa indica from India and Myanmar, and Oryza sativa japonica from southern China. The study's findings provide insights into improving the crop's nutritional value and disease resistance in Asia.
Researchers at UC Davis have identified a peptide that targets malignant lymphocytes, distinguishing it from healthy ones. The peptide, LLP2A, has the potential to be used as an imaging agent for patients with lymphoid cancers, offering a more targeted approach than existing monoclonal antibodies.
Scientists have discovered a link between bacterial growth fueled by algae and the death of corals. The study shows that bacteria suffocate corals by cutting off oxygen supply, leading to a positive feedback loop that accelerates reef decline. Human activities such as overfishing, pollution, and climate change exacerbate this process.
Researchers used high-intensity x-ray beams to create crystal structures of enzymes and their cofactors, revealing an alternating binding mechanism that enables continuous turnover of toxic compounds. This discovery may help understand metabolic disorders and develop corrective measures.
The Aymara language locates the past ahead and the future behind, defying the conventional spatial metaphor for chronology. The study's findings suggest that cognition of everyday abstractions like time is partly a cultural phenomenon.
Researchers identify abnormal fasting glucose levels as a risk factor for neuropathy, suggesting an earlier stage of disordered glucose metabolism. The study's findings support the hypothesis that impaired glucose tolerance may be a milder precursor to neuropathies associated with diabetes.
A recent animal study found that trans fat consumption can lead to weight gain despite controlled calorie intake. The study, led by Kylie Kavanagh and Lawrence L. Rudel, discovered that male monkeys fed a western-style diet rich in trans fat gained 7.2% more body weight compared to those on a monounsaturated fat diet.
Researchers use computer simulations to gain insights into material properties and behavior that cannot be observed through experiments. Simulations have been shown to accurately predict the reliability of materials that coat surfaces, offering a more complete understanding than traditional experimental methods.
Researchers used gene therapy to deliver glial-derived neurotrophic factor (GDNF) directly to the brain cells of mice with Huntington's disease, protecting neurons from degeneration. The study showed improved behavioral function and reduced symptoms in mice treated with GDNF, suggesting a new approach to forestall disease progression.
Researchers De Paepe and Taddei found that bacteriophages exhibit life history trade-offs between survival and reproduction, with rapid reproducers suffering higher casualties outside the host. Two physical parameters account for most of the observed variation in survival, suggesting a fundamental property of evolving entities.