Researchers found that bone marrow stem cells naturally migrate to injured brain regions after a stroke to aid in tissue repair. These cells can form new neurons and blood vessels, potentially enhancing recovery from stroke-related damage.
A new study by sociologists found that teenage boys' sex rates dropped 8.5% between 1991 and 1997, while teen pregnancy rates fell 14%. The decrease was largely attributed to fewer boys having sex during this period.
Scientists have created a novel approach to deliver medication through implanted medical devices using electrical currents, which could lead to improved chemotherapy treatments and enhanced patient quality of life.
A new study has found that heavy drinkers are at a higher risk of bleeding stroke, with hypertension and genetic factors also contributing to the condition. The research, conducted by the University of Cincinnati College of Medicine, involved 107 individuals with subarachnoid hemorrhage (SAH) and 197 without stroke.
A study published in Science identifies guggulipid as a target for developing drugs to lower cholesterol. The extract, combined with a cholesterol-lowering diet, reduced cholesterol levels by up to 20%. Researchers are now studying the biochemical reasons behind this effect and its potential impact on other medications.
A study suggests that the global extinction crisis is more severe than previously thought, with over 50% of declining mammal species losing historic ranges. Population extinctions are concentrated in densely populated areas, such as Southeast Asia and Eastern states.
A recent study by Penn State researchers found that urban forest fires have led to increased tree density of specific species in New York City's undeveloped parklands. In contrast, an old-growth urban forest in Cleveland, Ohio, has remained stable with no history of forest fires since 1935.
In southern Africa, measles elimination strategies reduced reported clinical cases from 60,000 to 117 cases between 1996 and 2000. With overall vaccination coverage of 91%, continued national commitment is crucial for implementation and maintenance of proven strategies.
The American Cancer Society has awarded a $768,000 grant to Dr. Gloria Borgstahl to study the molecular processes that cause breast cancer. She is conducting related experiments on the International Space Station to understand how good cells turn bad and develop new treatments for the disease.
Researchers found that the leprosy bug attaches to Schwann cells, disrupting the myelin sheath and causing nerve damage. This discovery may provide insights into early molecular events of neurodegeneration processes in diseases like multiple sclerosis.
A study of 355 patients with severe Crohn's disease found that infliximab treatment every two months significantly increased remission rates compared to placebo. Infliximab also allowed patients to taper off steroids and maintain clinical remissions.
The EMBO Award for Communication in the Life Sciences promotes active research and public outreach by recognizing innovative science communication. The award is given annually to a winning application that showcases imaginative and original works across various media forms.
Albert Szent-Györgyi was awarded the Nobel Prize in Physiology or Medicine for his discovery of vitamin C and its extraction from paprika. He pioneered studies on biological oxidation mechanisms, leading to significant advances in biochemical understanding.
Researchers found that showering increased THM levels in blood by a factor of four, suggesting the compounds are getting into the bloodstream through water use. The study investigated THM concentrations in women's blood before and after showering, revealing correlations with local tap water quality.
Researchers have found that highly connected proteins are unlikely to interact with each other, a phenomenon that helps reduce interference and increase stability in protein networks. This discovery was made possible by computer modeling of protein interactions in yeast cells, which revealed an
A systematic review found pentoxifylline to be around 50% more effective than placebo in treating venous leg ulcers. The drug's addition to standard compression therapy showed a 30% increase in complete healing rates.
Researchers examine the evolution of collaboration, from World War I to modern-day global partnerships, highlighting its benefits and impact on scientific productivity. The study also delves into how emerging technologies like email and the Internet have revolutionized research collaboration, making it more diverse and effective.
Research finds that infants with flow limitation in breathing may be more likely to develop asthma, while rhinovirus infection increases disease severity in acute bronchiolitis, and exercise can be safely done by women with sickle cell anemia
Aerosols from pollution particles reduce ice crystal sizes in thunderstorms, leading to less precipitation over land. Aerosol levels are highest over Northern Africa, with smaller ice crystals found in clouds above the eastern Pacific and southern Indian Oceans.
Researchers propose a new test for diagnosing malignant hyperthermia by measuring carbon dioxide pressure after caffeine injection, showing increased CO2 levels in susceptible individuals. Further testing is needed to define sensitivity and specificity of the test before it can be used for diagnosis.
A German study on mice found that genetic variations in a key stress-response gene may contribute to excessive alcohol consumption under stressful conditions. The researchers identified a specific receptor, CRH1, which is associated with increased alcohol intake in stressed mice, suggesting potential targets for preventing relapse.
Research found that consuming at least 300mcg of folate per day reduces stroke and cardiovascular disease risk. Folate, a B-vitamin, is found in citrus fruits, leafy greens, beans, and grain products.
The report counters common views on uncontrolled immigration, citing improved information and matching migrants with employer needs. It suggests an auction-based system for migration permits to better match skills and demands.
Researchers have discovered a genetic environment behind nerve-tissue tumors that lead to cancer, specifically NF-1. The study found that tumors grow in a permissive environment but are nonexistent when the environment is restrictive, offering new hope for treatment approaches.
Researchers at Johns Hopkins Medicine have made a breakthrough discovery in understanding how we hear, revealing that tiny 'hair cells' release a barrage of chemical packets to an adjacent nerve when sound is detected. This finding could improve the design and programming of hearing aids and cochlear implants.
The project focuses on fundamental breakthroughs in nanostructured macromolecular materials, with potential applications in military uniforms, miniaturized machines, displays, sensors, and actuators. Branched macromolecules will be studied to provide information for the development of high-tech surfaces and structures.
A five-year study demonstrated Xalatan's efficacy in managing open-angle glaucoma by reducing intraocular pressure (IOP) sustainably. The treatment was well-tolerated, controlling IOP without surgery in 72% of patients.
A 125-million-year-old fossilized plant has provided clues about the evolution of modern flowering plants, which are the dominant vegetation on Earth. The discovery, made in northeast China, shows that flowering plants may have originated underwater before transitioning to land.
Imatinib mesylate, a drug used to treat leukemia, has shown remarkable success in reducing eosinophil levels in people with hypereosinophilic syndrome (HES), a difficult-to-treat inflammatory disease. Four of five patients studied experienced complete elimination of symptoms.
Researchers discovered that guggulsterone blocks the FXR receptor, regulating cholesterol metabolism. The study suggests that guggulsterone could lead to new drugs to control cholesterol levels and potentially treat hyperlipidemia.
DNA molecules are pulled into a dense array of pillars by an electric field and then recoil back into the open space due to entropic forces. The researchers estimate the minimum entropic force at 5.7 femtoNewtons, suggesting this method could be used to separate molecules by length.
A recent study by the Southwest Oncology Group found that long-term treatment with prednisone after initial chemotherapy response significantly prolonged patient survival and delayed disease progression in those with multiple myeloma. Patients receiving higher doses of prednisone lived up to 37 months longer than those on lower doses.
A multi-center research team found that infliximab prolonged remissions in moderate to severe Crohn's disease patients by twice as long at bi-monthly infusions compared to every eight weeks. The drug also helped patients reduce steroid use and improve quality of life.
Scientists at Rensselaer Polytechnic Institute have created a breakthrough method for producing long, hair-like strands of carbon nanotubes up to 20 centimeters in length. This simplified approach uses chemical vapor deposition (CVD) with a sulfur-containing compound and hydrogen, resulting in high yields of long strands.
Scientists have identified a mechanism by which neutrophils can neutralize disease-causing bacteria like Shigella and Salmonella. Elastase, an enzyme produced by neutrophils, destroys virulent proteins in bacteria, allowing for the mobilization of other defenses that can destroy the bacteria.