A new study at Ohio State University found that estrogens increase aggression in mice during short days and decrease it during long days. The researchers identified the mechanisms underlying this interaction, revealing a genomic pathway for estrogen's effects in long-day mice and a different cellular mechanism for short-day mice.
A study published by the American Academy of Neurology found that consuming up to one drink a day can slow the development of dementia in individuals with mild cognitive impairment. The participants, aged 65-84, who consumed wine had an 85% slower rate of progression compared to those who never drank.
Researchers found that traditional nonsteroidal anti-inflammatory drugs (NSAIDs) may counteract the heart-protective effect of hormone replacement therapy in women. Current use of hormone replacement therapy was associated with a significantly lower risk of heart attack than non-use, but NSAID use negated this benefit.
Two novel medications, lubiprostone and linaclotide, have shown significant relief from IBS symptoms and constipation. Hypnotherapy has also been found to be effective in treating bowel issues in children.
A researcher at Arizona State University has created a 3D computational model to simulate crowd behavior in urban settings. The model takes into account individual characteristics and environmental factors, allowing city planners and public safety officials to explore 'what-if' scenarios and test hypotheses.
A large observational study found that taking vitamin supplements does not decrease the risk of lung cancer. The study involved 77,738 men and women aged 50-76 and found no statistically significant relationships between supplements and lung cancer.
The new material has one of the widest photonic band gaps reported, enabling control over light flow in applications like low-threshold lasers and solar cells. The structure's unique fabrication technique allows for complex designs that could also be used as microelectromechanical systems or biological devices.
A study found that breast MRI altered surgical management in 36% of patients, changing the plan from lumpectomy to mastectomy or increasing tissue removal. The change was beneficial in 22 cases, suggesting breast MRI may play a role in staging newly diagnosed breast cancers.
A research team led by UC San Diego radiologist Michael Kuo has developed tools that can translate CT images of cancer tumors into molecular details, revealing a strong connection between imaging features and genetic activity patterns. The study found consistent associations between 75% of genes in liver tumors and imaging traits.
Montana State University historians will investigate the technology, science, and pollution associated with two huge copper mines in Montana and Japan. The study aims to understand how different cultures dealt with these issues and explore moral dilemmas surrounding ecological reality.
National Jewish researchers present groundbreaking findings on asthma perception, air pollution effects, obesity resistance to medication, and salmeterol risk. They also discover household bleach can neutralize allergens, improving patient responses.
An international team of mathematicians has factored a 307-digit number, shattering the previous record. The achievement was made possible by advances in distributed computing and refined algorithms.
Researchers propose a comet impacted the Laurentide Ice Sheet, causing a 1,000-year-long cold spell and fragmenting human populations. The theory suggests that this event led to the extinction of numerous animal genera and ecological shifts.
A four-year study on pediatric osteosarcoma will investigate the effects of genes related to bone growth and lifestyle habits. The research team hopes to find a link between bone growth genes and the development of osteosarcoma in children.
A multicenter trial found that family members who engaged in a longer, more comprehensive conference had lower rates of post-traumatic stress disorder, anxiety, and depression. The study provided a 15-page leaflet with information on end-of-life care and bereavement support.
Researchers tested retinol-containing lotions on elderly patients, finding significant reductions in wrinkles, roughness, and overall aging severity. The study also showed increased collagen production, making the skin more resistant to injury and ulcer formation.
A preliminary study suggests that autologous platelet gel can enhance wound closure in acute full-thickness dermal wounds, with statistically increased closure rates compared to controls. The gel is rich in platelets important for blood clotting and appears to promote healing by increasing new tissue appearance.
A Stanford study found that macrophages, known as troublemakers in obesity, can also play a beneficial role in metabolism. The researchers identified a molecular switch that can shift the cells into the more desirable mode, which could help block insulin resistance and type-2 diabetes.
Researchers use archaeology, biochemistry, and ecology to study the behavior and ecology of northern fur seals over 1,500 years. They find evidence of reproductive behavior in prehistoric populations that differs from modern populations.
The study found that CO2 emissions increased at a rate three times faster than in the 1990s, primarily driven by growing energy intensity and population. This trend is concerning, as it suggests a reversal of long-term progress towards greater energy efficiency and reduced carbon intensities.
A study published at Digestive Disease Week found that a lifelong vegetarian diet can reduce the risk of colorectal cancer. Additionally, consuming a fatty soup as an appetizer before dinner may lead to reduced food intake in both lean and obese individuals.
The company has completed enrollment in its pivotal FDA-approved IDE study, the Asthma Intervention Research 2 (AIR2) Trial, which aims to establish the safety and efficacy of the Alair Bronchial Thermoplasty System. The trial has nearly 300 patients enrolled at over 30 medical centers worldwide.
Researchers have successfully transplanted human gut microbes into mice, providing insights into the metabolic system and its effects on fat absorption and digestion. The study found that gut microbes influence bile acid metabolism and fiber breakdown, impacting overall health.
In Italy, general practitioners receive frequent visits from drug sales reps, who provide information that doctors often consider reliable. A national continuing medical education program aims to disseminate independent, unbiased evidence through Clinical Evidence, a compendium of the best available research on treating common conditions.
A researcher at Kansas State University has created a special habitat for the yellow fever mosquito in an effort to understand how viruses disrupt programmed cell death. The goal is to determine if mosquitoes can be made immune to viruses, which could lead to breakthroughs in treating diseases like dengue fever and Alzheimer's.
Researchers at the University of Minnesota have developed a new high-affinity molecule called V-beta that blocks staphylococcal enterotoxin B (SEB), a major cause of toxic shock syndrome, with a rate 2000 times more effective than typical antibody treatment
A new study has shown that lubiprostone can improve symptom relief rates in adults with irritable bowel syndrome with constipation (IBS-C) by nearly twice as much as those receiving placebo, according to the results presented at Digestive Disease Week 2007.
Researchers at the University at Buffalo have discovered a significant association between chronic gum disease and the risk of tongue cancer. The study found that every millimeter of alveolar bone loss increases the risk five-fold, with no effect from other conditions.
Researchers discovered that caspase-14 plays a crucial role in maintaining the skin's balance of moisture and protecting against UVB radiation. The protein helps to regulate the processing of a key protein involved in skin structure, which can explain dehydration.
Researchers found that transcription factors bind to different sites in human and mouse liver cells, suggesting distinct regulatory mechanisms. This discovery could help identify patterns in gene expression and provide guidance for researchers using mice to understand human biology.
Researchers at Kansas State University are developing a new laser-like X-ray source that can capture fast motion in the atomic world. The technology could be used to quickly determine if a suspicious package contains dangerous chemicals.
The clinical trial data show that Perforomist Inhalation Solution provides rapid bronchodilation, improves lung function, and enhances patient quality of life compared to placebo. The treatment also has a favorable safety profile and is well-tolerated.
A study by NIH/NIDDK found that sling surgery was more effective in achieving dryness and quality of life for women with SUI, but had higher side effects. The procedure helped significantly more women achieve stress-specific success compared to the Burch technique.
Researchers assessed the effectiveness of topical retinol lotion in reducing wrinkles and improving skin aging severity. The study found significant reduction in wrinkle formation and increased collagen production, leading to improved appearance and skin resilience.
UPMC has started a study using the VentrAssist LVAD, a mechanical blood pump to assist the heart in pumping blood around the body. The study aims to enroll 30 patients for a multi-center feasibility trial to explore its safety and effectiveness as a bridge to transplantation.
Researchers at VCU Medical Center report nearly all patients with hepatitis C treated successfully have no detectable virus after seven years. The study validates the use of 'cure' to describe successful treatment, offering hope for those affected by the disease.
Researchers reconstructed the species' prehistoric geographical range using techniques from archaeology, biochemistry, and ecology. Prehistoric northern fur seals were year-round residents in California, nursing their young for much longer than modern fur seals.
A FSU engineering professor is developing technologies to generate bone cells in a lab that can be transplanted into human patients. The goal is to replace lost bone mass due to osteoporosis and treat traumatic injuries. Research has shown promising results, but significant hurdles remain before the technology is ready for medical use.
A recent study by the Mailman School of Public Health found a possible link between cigarette use and the rise in childhood asthma cases. Cigarette smoke exposure is thought to contribute to the increasing prevalence of asthma among children, particularly those from low-income backgrounds.
Researchers introduce novel methods for evaluating patients with non-alcoholic fatty liver disease (NAFLD), including a blood test to determine caspase three-generated cytokeratin 18 fragment levels. These tests may help differentiate NASH from simple steatosis and predict treatment outcomes, potentially improving patient care.
A recent study has discovered a strong hereditary component to aggressive prostate cancer, with patients carrying the 8q24 genetic marker having a higher risk of developing the disease. The marker is twice as common in African-American men, who also experience the disease at a younger age and have a higher incidence rate.
Researchers found that statin therapy improved ALT values in chronic hepatitis C patients with abnormal liver enzymes. The study also showed a higher sustained viral response rate when adding statins to standard peginterferon and ribavirin treatment, suggesting a possible new treatment option.
A study at the University of Pittsburgh School of Medicine found that green tea's catechins protected normal and cancerous bladder cells from inflammation. The findings suggest herbal supplements from green tea could be a treatment option for various bladder conditions.
Researchers have found that veterans exposed to Agent Orange have a 48% higher risk of prostate cancer recurrence following surgery compared to their unexposed peers. Black veterans with a history of exposure were also more likely to experience aggressive disease and rapid PSA level increases.
Researchers have developed a nanocomposite particle that can target and destroy melanoma cancer cells using laser irradiation. The technology utilizes selectively absorbing metallic clusters to enhance light absorption within labeled cells, causing damage without affecting surrounding tissue.
Researchers have made significant advancements in diagnosing and treating chronic hepatitis C, with potential new markers for detecting liver cancer. Studies have also explored the role of autotaxin in linking hepatitis C to hepatocellular carcinoma.
A new study found that lower levels of endotoxin in young children's homes are associated with a higher risk of developing wheezing or eczema by age 3. Certain environmental factors such as older home conditions and carpeting increase endotoxin levels, while genetic predisposition may also play a role.
Researchers found a strong correlation between initial PSA levels and future diagnosis of advanced disease. Men with high PSA levels had a higher risk of developing advanced disease, emphasizing the importance of early testing.
A survey of high school students found that most struggle with early morning start times, leading to decreased alertness and poor academic performance. The teens recommended starting school at a later time, allowing for more sleep and improved focus.
A new study found that a two-step sedation and ventilator weaning protocol, called 'wake up and breathe,' allows patients to come off the ventilator faster. This results in reduced ICU stays and improved patient outcomes.
A new study has found that sleep apnea significantly increases the risk of heart attack or death over a period of four to five years. Researchers followed 1,123 patients with sleep apnea for five years and found that those with more severe symptoms were at higher risk of developing heart disease.
A study found that children of smokers have impaired lung function, regardless of whether they exhibit respiratory symptoms, and that smoking after birth may be more harmful than during pregnancy. Researchers speculate that growing smoking bans could lead to increased home smoke exposure and further lung damage.
A recent study has found that people with sleep apnea are twice as likely to be involved in a car crash and three to five times more likely to have a serious crash involving personal injury. The study, which analyzed data from 800 patients with sleep apnea and 800 without the condition, highlights the severity of the risk.
New research explores liver biomarkers, disease complications, and novel treatments to improve outcomes in patients with liver disease. A study found that an elevated ALT/AST ratio can predict coronary atherosclerosis in women, independent of metabolic syndrome.
Researchers have developed targeted nanoparticles incorporating siRNA that can slow tumor growth without eliciting toxicities. The nanoparticles' structure and biological function are characterized using physicochemical and biological methods, offering insights into designing more effective carriers.
A new study found that medical residents who worked within the mandated 80-hour per week limit still experienced severe sleepiness, affecting their judgment and concentration. The researchers assessed objective and subjective sleepiness using multiple tests and found significant abnormalities on post-call days.
Researchers create nanotubes to deliver therapeutic proteins or drugs in a highly-controlled manner, avoiding side effects and improving treatment outcomes. The method targets the drug where it is needed, reducing dosage and promoting better absorption.
Two CDC studies will be presented at ATS 2007 on TB epidemiology, focusing on foreign-born persons and African Americans in the southeastern US. The studies aim to improve outreach and control efforts, targeting enhanced prevention and control among high-risk populations.
A recent study found that hearing the same opinion multiple times from one source can have a significant impact on perception, often leading to a false sense of popularity. Researchers examined how individuals estimate group norms and opinions, shedding light on cognitive processes that influence our decisions.
Researchers use nanotechnology to enhance nerve cell regeneration, bypassing inhibitory environments. Magnetic nanoparticles create mechanical tension, while aligned nanofibers provide a bioactive matrix for growth.