Researchers found that suppressing interferon-gamma can prevent damage to myelin-producing cells in the nervous system. Transgenic mice with SOCS1 gene showed reduced symptoms and cell loss compared to those without it.
Researchers at Rice University have made an unexpected plasmonic discovery, finding that terahertz waves slow down as they pass through smaller metal wires. This phenomenon has significant implications for the development of new chemical sensors and endoscopes.
The study found that the protein MBD2 mediates DNA methylation to silence specific genes. This could lead to more targeted approaches to reactivate genes and treat diseases such as sickle-cell anemia and beta-thalassemia, with less risk of unintended side effects.
Research papers in Geophysical Research Letters and Paleoceanography reveal the connection between terrestrial gamma-ray flashes and intracloud lightning, as well as the potential of dinoflagellate microfossils to document past climate changes. The findings suggest that these marine organisms can provide valuable information on ocean c...
Researchers have discovered the Universe's strongest magnetic field, generated by violent collisions between neutron stars. The discovery sheds light on the mysterious short Gamma-ray bursts, which are the most powerful explosions in the universe. Scientists believe that strong magnetic fields play a crucial role in their formation.
Scientists at NIST have developed a highly accurate gamma ray detector, capable of pinpointing emissions signatures of specific atoms with 10 times the precision of conventional sensors. This technology may aid in verifying inventories of nuclear materials and detecting radioactive contamination in the environment.
Researchers are testing LY450139, a gamma secretase inhibitor, to prevent amyloid plaque build-up and stop Alzheimer's disease progression. The study aims to determine the safety, efficacy, and optimal dosage of the drug in 45 participants.
Researchers analyze gamma-ray burst GRB 050904 to understand the conditions of the early universe. The burst, detected in 2005, provides a probe to study the universe beyond the reach of large telescopes.
A colossal gamma-ray flare from magnetar SGR 1806-20 has profoundly disturbed the Earth's daytime ionosphere. Scientists detected this massive effect using VLF radio waves, which enable them to monitor ionospheric responses to lightning discharges and cosmic events.
A new theory published in Geophysical Research Letters explains the energization of anomalous cosmic rays by including a realistic termination shock shape. The model shows that particles are accelerated on the flanks of the termination shock, contradicting previous assumptions.
The H.E.S.S. collaboration has discovered gamma-ray emission from a complex of gas clouds near the Milky Way Galaxy's centre, revealing a prehistoric particle accelerator. The density of cosmic rays exceeds that in the solar neighbourhood, suggesting recent acceleration.
Researchers have identified a new pathway for cancer treatment by targeting the degradation of steroid receptor coactivator 3 (SRC3) through the REG-GAMMA molecule. High levels of SRC3 can lead to tumor growth in breast cancer, but low levels of REG-GAMMA can activate its destruction, potentially halting tumor progression.
Researchers have detected gamma rays from radioactive aluminium (26Al) originating from the central regions of the Galaxy, indicating an ongoing process of new atomic nucleus production. The estimated total amount of radioactive 26Al is equivalent to three solar masses, corresponding to a galactic rate of supernovae every 50 years.
Researchers at New York University's Milagro facility have detected the most energetic gamma rays yet observed along the galactic equator, reaching 3.5 trillion electron-volts in energy. The findings, published in Physical Review Letters, provide new insights into cosmic-ray interactions with interstellar medium.
Astronomers have observed two short gamma-ray bursts and confirmed that they originate from the collision of compact objects, such as neutron stars or black holes. The events released significantly less energy than typical long gamma-ray bursts.
Researchers have pinpointed a population of old neutron stars as the sources of short gamma-ray bursts, which are fainter and more difficult to localize than long bursts. The discovery sheds new light on these enigmatic cosmic explosions.
The Swift satellite has received a "Best of What's New" award for its innovative technology, enabling rapid detection and follow-up observations of gamma-ray bursts. This breakthrough has confirmed the origin of gamma-ray bursts and helped pinpoint the birth of a special kind of black hole.
Researchers have found that high-voltage sparks can produce x-ray bursts, similar to those observed during lightning. This discovery opens the door for studying the poorly understood phenomenon of runaway breakdown in a lab setting.
The Gamma Knife treatment has been shown to provide significant pain relief and quality of life improvements for over 90% of patients with trigeminal neuralgia. Facial numbness was a common side effect, but its impact on daily life was often less severe than the debilitating pain it replaced.
Astronomers have discovered the first optical afterglow of a short gamma-ray burst, providing evidence for their cosmic explosion hypothesis. The findings suggest that these bursts originate from the merging of compact stars in elliptical galaxies.
Researchers have identified a potential new treatment for insulin-dependent diabetes by targeting natural killer T cells. The study shows that multiple doses of alpha-galactosylceramide can reduce the production of interferon-gamma, which helps destroy transplanted islet cells.
The US Army's Gamma Phage Assay has been approved by the FDA for human use within the Laboratory Response Network (LRN), enabling early detection of anthrax bioterrorism threats. This test, developed with CDC support, is a classical bacteriological method that uses a virus to identify B. anthracis.
The MAGIC telescope has tracked a long duration gamma-ray burst, GRB050713A, in the X-ray and very high energy gamma ray band. The observation was made possible by rapid tracking of the telescope, which allowed it to start observing the source just 20 seconds after an alert from the Swift satellite.
A team of scientists from K-State and Brookhaven National Laboratory has developed a compact, high-resolution gamma ray detector that is cheaper to produce than existing devices. The invention, which uses a patented design by McGregor and McNeil, can be used for homeland security purposes, medical imaging, and radiation monitoring.
Swift detected a quick rise in ultraviolet light after the Deep Impact probe struck a hard surface on the comet, revealing secrets about the impact.
Researchers have discovered a new enzyme family that plays a role in Alzheimer's disease, generating toxic molecules called amyloid-beta peptides. The study uses genetically-engineered mice to show that the toxic activity of this enzyme can be separated from its other benign activities.
Researchers found that TZD activates PPAR-gamma in the kidney's collecting duct, leading to fluid retention and edema. The study opens new avenues for treating Type II diabetes and hypertension.
X-ray flashes and gamma-ray bursts, two powerful cosmic explosions, have long been linked in theory. New satellite data, however, suggests that these events may not be as connected as previously thought, contradicting popular theories.
Researchers have found tantalizing evidence that short gamma-ray bursts are caused by the collision of old, dense neutron stars. The discovery was made using data from the Swift satellite and spectroscopy from the Keck II telescope, which pinpointed a new burst near an elliptical galaxy.
Observations of SN 2003jd reveal aspherical explosion, supporting hypothesis that Type Ic supernovae can produce gamma-ray bursts. The findings also suggest that the direction-dependent shape of the oxygen line is a key indicator of an aspherical explosion.
A team of astronomers suggests that Type Ic supernovae could produce gamma-ray bursts through the collapsar model, which proposes an asymmetric explosion mechanism and a jet of particles and energy. The theory is supported by observations with Keck and Subaru telescopes in Hawaii.
Astronomers have detected a unique visible light component that varies with gamma rays, suggesting a common origin for both. This finding contradicts previous theories and sheds new light on the nature of these powerful cosmic events.
Weakened T-cell receptor signals shift T-cell lineage towards the gamma-delta pathway, enabling immune surveillance against external disease-causing agents. Gamma-delta T cells appear particularly adept at combating skin cancers and may play a role in detecting potential cancers.
The discovery of CD147 reveals a new component regulating the production of A-beta peptides, which form amyloid plaques. The study highlights the importance of understanding membrane protein structures to combat Alzheimer's research.
Researchers found that low-dose MDCT can provide similar diagnostic image quality to standard-dose CT scans while reducing radiation doses by up to 10 times. The study suggests low-dose MDCT is a better option for evaluating sinus disease in children due to its improved accuracy and reduced need for sedation.
Scientists detected gamma rays in thunderstorms, contradicting a long-held theory. The study found lightning strokes preceding the gamma rays, suggesting a negative cause-and-effect relationship.
Recent tests by the National Institute of Standards and Technology (NIST) found that portable radiation detectors perform well enough to meet new consensus standards, but produce inaccurate readings for low-energy X-rays. The results highlight the need for manufacturers to better design and characterize their instruments.
The NASA-led Swift mission has successfully measured the distances to two gamma-ray bursts, both originating from over 9 billion light years away. These direct distance measurements, achieved with Swift's Ultraviolet/OpticalTelescope (UVOT), represent a major milestone for the mission since its launch in 2004.
A total of eight new VHE gamma-ray sources have been found in the Milky Way's disc, doubling known sources at these energies. The discovery includes two 'dark accelerators' without obvious counterparts in other wavelength bands, sparking excitement among astronomers.
A new study by University at Buffalo researchers found that panoramic X-rays have limited value and can be used selectively in some cases. The study, which evaluated 1,000 panoramic X-rays, revealed that lesions in sinus cavities, soft tissue of the neck, and upper jaw bone were not always picked up on full-mouth-series X-rays.
Astronomers using the European Space Agency's XMM-Newton telescope discovered that Jupiter's x-ray glow is due to x-rays from the Sun being reflected back off the planet's atmosphere. The discovery synchronises Jupiter's day-to-day disk x-rays with the Sun's emissions, providing new insights into solar activity.
A massive gamma-ray flare from a magnetar was detected by the RHESSI satellite, emitting as much energy in two-tenths of a second as the sun gives off in 250,000 years. The event's immense power suggests a solution to the origins of short-duration gamma ray bursts.
Scientists have detected over 50 gamma-ray flashes per day, with energies comparable to those emitted by black holes and neutron stars. The exact mechanism behind these bursts remains uncertain, but researchers suspect it involves lightning discharges and electric fields in the upper atmosphere.
S. epidermidis produces poly-gamma-glutamate (PGA) to protect itself from innate host defenses during infection. The findings suggest PGA as a promising target for drug development to combat related illnesses.
The Swift satellite's Ultraviolet/Optical Telescope (UVOT) has captured an image of the Pinwheel Galaxy, revealing regions of star formation in the galaxy's spiral arms. The UVOT will also help scientists determine the distance to closer gamma-ray bursts and study their afterglows.
A new study identifies a genetic variant associated with increased MS risk in women, suggesting that interferon gamma production plays a key role in the disease. The findings provide potential targets for future research and treatments, as well as insights into gender differences in disease susceptibility.
The new technique uses gamma camera technology to detect smaller breast lesions and improve cancer diagnosis, particularly in women with dense breast tissue. The study found a high sensitivity rate of 86% for detecting small breast tumors, outperforming conventional gamma cameras.
The Swift X-ray Telescope has successfully captured its first gamma-ray burst afterglow, marking a significant milestone in the mission to understand these mysterious events. The telescope will help scientists pinpoint the location and nature of the explosion, providing crucial clues about the origins of gamma-ray bursts.
A Purdue University scientist has discovered that gamma-tocopherol, a form of vitamin E found in plant seeds, can inhibit the growth of prostate and lung cancer cells without harming healthy cells. The study suggests that supplementing with mixed forms of vitamin E may enhance its anticancer effects.
Researchers found that thiazolidinedione (TZD) class of anti-diabetic therapies can kill multiple myeloma cells by binding to PPAR-gamma protein, showing potential as a new cancer therapy. The effectiveness of TZD drugs was enhanced when combined with Vitamin A-like compounds.
Studies with mice found that activating PPAR-gamma and PPAR-alpha can prevent cholesterol accumulation in atherosclerotic lesions by up to 70 percent. The researchers identified distinct molecular pathways for the two types of proteins, which could lead to new anti-atherosclerotic medications.
A study found that dental x-rays were as sensitive as questionnaires in identifying women with spinal osteoporosis. Dental x-rays can be used as a first step in determining which women need further BMD testing, especially for those with low response rates to questionnaires.
Researchers at Rice University developed a new wave guide technology that enables terahertz sensing capabilities in confined spaces. This innovation could aid applications such as explosive detection, cancer screening, and quality control, offering unique advantages over existing technologies.
Researchers found that an ancient marine invasion led to a significant increase in regional diversity, with gamma diversity rising by 26% due to changes in beta diversity. The study suggests that habitat distribution or increased habitat diversity may have contributed to this increase.
Researchers found that schizophrenic patients lacked gamma band response, indicating defective communication between neurons, while healthy brains showed synchronized activity at 40 hertz. The study suggests that drugs promoting a normal gamma response may help alleviate schizophrenia symptoms.
Astronomers study remnant of 1,000-year-old supernova to solve long-standing puzzle of cosmic ray origin. They create gamma-ray image using Cherenkov radiation, providing first unequivocal proof that supernovae produce galactic cosmic rays.
Researchers at St. Jude Children's Research Hospital developed a gene vector that allows hematopoietic stem cells to produce fetal hemoglobin, reversing beta-thalassemia in mice. The technique uses a new vector with added regulatory elements to improve the expression of the gamma-globin gene.
Researchers found that THC prevents viral reactivation in gamma herpes viruses, which are linked to certain cancers. The study suggests a potential antiviral drug based on nonpsychoactive derivatives of THC, but further research is required.
Astronomers have detected high-energy gamma rays emanating from the center of the Milky Way galaxy, sparking debate about the nature of these mysterious emissions. The observation suggests a giant supernova explosion as the possible source, which could accelerate cosmic gamma rays to unprecedented energies.
The Swift satellite will pinpoint the location of distant gamma-ray bursts, studying both the burst and its afterglow. It may uncover new clues about the burst mechanism and provide a bonanza of cosmological data, including information about supermassive black holes.