Articles tagged with Reactive Oxygen Species
Researchers at Washington University School of Medicine have developed an experimental imaging agent called Galuminox that detects inflammation via positron-emission tomography (PET) scans. The agent has shown promise in imaging inflammation in the lungs of mice with acute lung injury, and its potential uses include cancer treatment an...
Researchers discovered a 'mild depolarization' of the inner mitochondrial membrane regulates mROS production and is key to the anti-ageing program. This mechanism falls apart in mice at 1 year but persists in naked mole rats up to 20 years, contributing to their exceptional longevity.
Researchers found that mild mitochondrial depolarization minimizes damage from reactive oxygen species and serves an anti-aging function in naked mole rats and bats. This process involves the shuttle of ATP and ADP through the mitochondrial membrane to certain kinase metabolic sites.
Scientists at the University of Bath have developed a new probe, AzuFluor, to detect reactive oxygen species in cells under the microscope. This probe uses a bright blue chemical found in mushrooms and has shown potential applications in cell biology and the pharmaceutical industry.
A recent study published in Plants revealed that electrons flowing through the reaction center chlorophyll (P700) in photosystem I undergo a charge recombination, producing chemical energy used in photosynthesis. This finding suggests an alternative pathway to suppress reactive oxygen species production and mitigate plant stress.
A study of 50 men with partners who experienced recurrent miscarriages found higher levels of DNA damage in their sperm compared to healthy control groups. The researchers suggest that oxidative stress triggered by reactive oxygen species may contribute to the risk of miscarriage, and are investigating potential treatments.
Ceria nanoparticles selectively remove reactive oxygen species from mitochondria, intracellular and extracellular spaces, improving Parkinson's disease symptoms in mice. Lowering oxidative stress in these compartments is crucial for treating the disease.
A study published in Hypertension Journal found that targeting a specific miRNA-mRNA pathway may reduce cocaine-induced cardiovascular disease. The researchers discovered that activating this pathway leads to increased reactive oxygen species, causing damage and cell death.
Researchers have discovered a new mechanism by which mitochondria regulate protein synthesis in response to oxidative stress. Using quantitative mass spectrometry and biochemical methods, the team identified redox-active thiols that can slow down cellular protein synthesis machinery when reactive oxygen species are present.
Researchers have developed biocompatible microcapsules that can scavenge reactive oxygen species, potentially aiding in antioxidant therapy or industrial applications. The novel microcapsules show improved scavenging rates compared to previous versions and do not degrade with exposure to reactive oxygen species.
Korean scientists report that ceria-zirconia nanoparticles act as effective scavengers of oxygen radicals, promoting a greatly enhanced surviving rate in sepsis model organisms. The nanoparticles accumulate in organs where severe immune responses occur and successfully eradicate reactive oxygen species.
Researchers discovered the P700 oxidation system in plants to suppress reactive oxygen species production, allowing safe photosynthesis. The system starts functioning when excess light energy is present, serving as a warning marker for oxidative stress.
A recent study published in PNAS has shed light on the long-standing problem of photosynthetic process in plants. Researchers identified the specific regions of Photosystem II protein complex where reactive oxygen species damage occurs, revealing a new paradigm for understanding this vital chemical process.
Researchers found that normal atmospheric conditions lead to the formation of oxygen-enriched silica nanoparticles with magnetic properties. These reactive oxygen species have been linked to cancer and may explain the known carcinogenicity of silica dust. The study provides a possible explanation for the high toxicity of silica dust.
Neutrophils, the body's immune superheroes, switch from migrating to murdering invaders when exposed to reactive oxygen species. A receptor called TRPM2 senses ROS levels and triggers a shutdown of migration, allowing neutrophils to focus on killing bacteria and other pathogens.
Researchers have reproduced the reaction behind plant withering, revealing a mechanism involving reactive oxygen species during photosynthesis. This discovery could help ensure stable food supplies by cultivating plants resistant to global warming.
Researchers discovered that mitochondrial reactive oxygen species induce cell death by NETosis in a process dependent on RNA-protein immune complexes found in lupus patients. The extracellular release of oxidized mitochondrial DNA promotes an inflammatory reaction, and scavengers that clean up the overflow can reduce type I interferon ...
Researchers discovered that seeds have recycled a plant protection mechanism called the cuticle to withstand terrestrial aggressions. The cuticle increases seed viability, resistance to reactive oxygen species, and maintains dormant state, allowing seeds to survive and propagate in new environments.
Scientists at Scripps Research Institute found that a natural compound called leinamycin (LNM) E1 can be activated by reactive oxygen species, leading to DNA damage and cell death in cancer cells. The study reveals promising therapeutic potential for LNM E1 against prostate and other cancers.
A recent study by UC San Diego researchers found a correlation between CD33rSIGLEC gene copy number and maximum lifespan across 14 mammalian species. Mice lacking this gene also showed signs of accelerated aging and higher levels of reactive oxygen species.
Researchers have successfully tested nanoparticles that can quickly quench damaging superoxides, potentially protecting against further brain damage in traumatic injuries. The particles, known as PEG-HCCs, have shown an enormous capacity to neutralize thousands of reactive oxygen species molecules, restoring normal oxygen levels.
A team of researchers discovered a mechanism linked to brain damage after stroke and found that removing it reduces damage. They identified an ion channel called TRPM2, which opens in the presence of reactive oxygen species, causing neuronal cell damage.
Researchers developed a new optical microscopy technique to analyze the redox state of mitochondria in living tissue. The study revealed that severance of an axon results in a wave of oxidation of the mitochondria, which begins at the site of damage and is propagated along the fiber.
Research identifies NADPH oxidase 4 (NOX4) as a promoter of bone resorption and osteoclastogenesis. Genetic disruption or inhibition of NOX4 has been shown to protect against bone loss in mouse models.
Researchers from ETH Zurich found that vitamin niacin and its metabolite nicotinamide increase lifespan by promoting the formation of free radicals in roundworms. This contradicts common textbook opinion on antioxidants' role in health.
A study published by Henry Ford Hospital found that resveratrol can reduce noise-induced hearing loss and cognitive decline in rats. The researchers discovered that resveratrol inhibits the inflammatory process and oxidative stress caused by loud noise, providing protection against age-related hearing and cognitive impairment.
Researchers found that Lactobacillus rhamnosus promotes healing of the intestinal lining in mice by inducing reactive oxygen species. This discovery could guide doctors to improved treatments for intestinal diseases.
Researchers at the Weizmann Institute discovered that antioxidants can cause a decrease in ovulation levels in female mice, potentially disrupting fertility. The study suggests that reactive oxygen species play a crucial role in the ovulation process and may be affected by antioxidant supplementation.
Researchers replaced hydrogen with deuterium in fluorescent probes to increase stability and detect smaller concentrations of reactive oxygen species. The new probes showed improved detection ability and reduced degradation by air and light, making them more accurate for imaging and analysis.
Researchers at Medical College of Georgia have developed a synthetic peptide that mimics the body's natural ability to reduce excess fluid accumulation in lung transplant patients. The peptide, called TIP, has been shown to improve oxygenation and reduce inflammation, potentially reducing mortality rates.
Researchers have developed a new class of fluorescent probes called hydrocyanines to detect reactive oxygen species. The dyes can be used for deep tissue imaging in vivo and show promise for detecting overproduction of reactive oxygen species at an early stage, potentially leading to earlier diagnosis of inflammatory diseases.
A recent study published in Circulation has uncovered the mechanisms by which low blood flow contributes to vascular disease. The research found that cyclophilin A plays a dual role in promoting inflammation and pathogenic growth, highlighting its potential as a target for developing new treatments against atherosclerosis.
A study published by the American Thoracic Society found that an antioxidant called heme oxygenase-1 (HO-1) is elevated in the lungs of patients with chronic silicosis. HO-1 protects against reactive oxygen species, which cause tissue injury and scar formation.
Researchers discovered that reactive oxygen species are essential for the development of balance machinery in the inner ear. The study found that a specific mutation in the Noxo1 gene, which encodes an NADPH oxidase enzyme, led to impaired balance and altered posture in mice.
Researchers found that mice embryos lacking the ATM gene were more susceptible to DNA damage and birth defects when exposed to ionizing radiation. The study suggests that the ATM gene protects embryos from oxidative stress, and its absence may lead to increased risk of birth defects in humans.
Researchers found that short-term stress combined with exposure to low-dose chemicals causes widespread cellular damage in the brain and liver of rats. The combination also promotes cell death, damages specific brain regions, and increases reactive oxygen species, which can lead to further damage.