Articles tagged with Oxidative Stress
A new study published by the American Academy of Ophthalmology suggests that taking metformin, a common diabetes medication, can lower the risk of age-related macular degeneration. Researchers found that patients who took metformin had half as many cases of AMD compared to those who did not.
A root extract of Fallopia multiflora has been shown to extend the lifetime of nematodes by almost 19% and protect them from oxidative stress. The primary component of the extract, similar in structure to resveratrol, activates sirtuins that control ageing.
Researchers at Brigham and Women's Hospital have developed a new model of heart failure that allows for the specific study of oxidative stress using chemogenetics. The approach enables researchers to activate or inactivate reactive oxygen species in the heart, leading to advanced cardiac dysfunction.
Researchers found that inoculation of rice plants with Brevibacterium linens RS16 improved photosynthetic traits and reduced volatile emissions in response to salt stress. This non-invasive approach enhances plant salinity tolerance, offering a potential solution for crop productivity under saline conditions.
Research suggests that early life stress can lead to increased levels of 'danger' molecules, which can overwhelm the body's natural system and cause chronic inflammation. This can ultimately result in a host of health problems, including cardiovascular disease.
Researchers found that nasal cells have a stronger antiviral response, while lung cells have a stronger defense against oxidative stress. This trade-off can make individuals more susceptible to rhinovirus infection when exposed to another stressor like cigarette smoke.
A researcher has linked the mysterious illness affecting American and Canadian diplomats in Cuba and China to radiofrequency/microwave radiation. The study's findings may aid in treating affected individuals and shed light on a larger population of people experiencing similar health problems.
Researchers found that higher oxidative stress in males reduces the production of nitric oxide, a powerful blood vessel dilator. An antioxidant treatment restored similar production levels of protective nitric oxide between males and females.
Research found that bigger eggs are advantageous in rainy weather, while smaller eggs are better suited for hot temperatures. House sparrows compensate for variable egg sizes by laying varying egg sizes within the same clutch.
A new study found that injectable trace minerals alleviate inflammation and oxidative stress in lactating Holstein cows exposed to aflatoxin. The researchers discovered that the minerals increased liver concentrations of selenium and iron and boosted serum glutathione peroxidase activity.
A new study found that Lutemax 2020 supplementation reduces photoreceptor damage caused by blue light exposure. The supplement's lutein and zeaxanthin isomers protect the eye by decreasing oxidative and endoplasmic reticulum stress.
Researchers at UH College of Pharmacy discovered that Angiotensin 1-7, a peptide found in humans, can relieve oxidative stress and reduce blood pressure. This finding offers a potential alternative to current medication with fewer side effects.
A recent study suggests that some level of reactive oxygen species (ROS) may be essential to health and development, contrary to the common assumption that they are harmful. The research, led by Purdue University's Daniel Suter, found that inhibiting an enzyme producing ROS in zebrafish embryos resulted in developmental complications.
Researchers found that short-sleeping fruit fly mutants are sensitive to acute oxidative stress, supporting the idea that sleep defends against oxidative damage. The study suggests a bi-directional relationship between sleep and oxidative stress, with sleep helping to reduce oxidative stress and vice versa.
Researchers at the University of Córdoba have discovered that a selenium-enriched diet can partially repair cell damage caused by the pesticide DDT in mice. The study found that selenium stimulates antioxidant defenses in cells, preventing oxidative stress and damage similar to cancer cells.
Research reveals deletion of adipose oxidative stress decreases lipid accumulation in the liver, improving insulin resistance and inducing metabolically healthy obesity. Oxidative stress suppresses lipogenic genes in adipocytes, leading to de novo lipogenesis suppression.
Researchers found that taking a mitochondrial-specific antioxidant supplement improved blood vessel dilation by 42%, making them appear younger. The improvement was due to reduced oxidative stress and associated with a 13% reduction in heart disease risk.
A new model considers three stages of oxidation and predicts that heavy loads compress alloys, absorbing less oxygen, while stresses pull them apart, allowing more oxygen to infiltrate. The team's framework matches data in microelectromechanical devices, aiming to improve device performance.
A recent study by University of Tokyo scientists has identified the Ask genes as crucial for regulating circadian rhythms and responding to cellular stress. The research found that cells lacking these genes are impaired in their ability to adapt to daily changes in environmental conditions, leading to disruptions in sleep-wake cycles.
A biochemical pathway in the Golgi apparatus helps cells counter oxidative stress, and researchers found it can be activated by a drug called monensin, which may protect cells against Huntington's disease.
Researchers discovered that small noncoding RNAs orchestrate the resilience of Haloarchaea to oxidative stress by degrading messenger RNA and silencing transposons. This finding could lead to a better understanding of how other species, like humans, resist damage from oxidative stress.
New research found that e-cigarette flavoring chemicals can cause significant inflammation in monocytes, a type of white blood cell, and many compounds are toxic. Mixing flavors is more damaging than vaping just one, with cinnamon, vanilla, and buttery flavors being the worst offenders.
Researchers are using a unique imaging technique, Quest MRI, to study the earliest signs of Alzheimer's disease in mice. The technique measures oxidative stress in specific brain regions over time and has shown promise as a potential biomarker for AD.
Scientists discover that pain medicine pentazocine preserves vision in a model of severe retinal degeneration by activating the Nrf2-Keap1 antioxidant pathway. The drug normalizes Nrf2 levels, potentially restoring its protective function and preventing oxidative stress.
Researchers are investigating a novel treatment approach for Parkinson's disease by inhibiting the protein Bach1, which blocks the body's natural protection against oxidative stress. By removing Bach1, scientists aim to restore balance and promote the activation of neuroprotective genes.
Scientists used a novel gene editing technique to uncover the genetic basis of paraquat-induced Parkinson's disease. The study identified three genes - POR, ATP7A and SLC45A4 - that confer resistance to paraquat, suggesting these genes may be responsible for the toxicity.
A Spanish research team found that urban house sparrows suffer from more stress due to toxic effects of air pollution and unhealthy diets compared to their country counterparts. This could have health implications for people living in cities.
Researchers found that oxidative stress produces microfractures in amniotic membranes, increasing the risk of early water breakage and preterm birth. The study used specialized microscopic techniques to detect these fractures in donated amniotic membranes.
A new study found that exposure to e-cigarettes with nicotine increases cardiac adrenaline levels, as indicated by abnormal heart rate variability. This increase is associated with a higher risk of death in people with known cardiac disease and those without, suggesting that e-cigarettes may not be safe for nonsmokers.
A new UCLA study found that healthy nonsmokers experienced increased adrenaline levels in their heart after one electronic cigarette (e-cigarette) with nicotine. The findings suggest that e-cigarettes with nicotine may not be safe for all users, especially those without known cardiac disease.
Scientists at Temple University Health System uncover the mechanism underlying energy loss from heart dysfunction in sepsis, proposing NOX2 inhibition as a potential treatment. The research builds on earlier findings and aims to provide extra time for anti-inflammatory treatments to work.
Researchers identified a specific genome type, ST121, that contains the SSI-2 sequence, a stress survival island that helps Listeria monocytogenes strains cope with alkaline and oxidative stress. The discovery provides new insights into food safety strategies.
A study published by the American Heart Association found that exposure to high levels of fine particulate matter increased stress hormone levels and negative metabolic changes in healthy young adults. Air purifiers reduced these effects, with significant benefits seen in blood pressure, insulin resistance, and biomarkers of inflammation.
Researchers at the University of British Columbia developed a novel method to assess malaria progression using RBC deformability, which can indicate hemin-induced oxidative stress. This simple microfluidic device can determine RBC rigidity in minutes, providing a valuable tool for disease diagnosis and treatment.
A Duke University study reveals that rush hour commutes may be more hazardous to human health than previously thought. The levels of particulate matter and chemicals causing oxidative stress found in car cabins were twice as high as roadside sensors, posing a significant risk to drivers' health.
A new study found that children exposed to high levels of outdoor particulate air pollution during pregnancy and high maternal stress were more likely to develop asthma by age six. Boys were particularly affected, possibly due to slower lung maturation and increased risk of oxidative stress.
Researchers found that viral acute respiratory infections (ARIs) in infants may lead to oxidative stress and recurrent wheezing in early childhood. Oxidative stress is an imbalance between free radicals and antioxidants in the body, and measuring it in urine samples during a viral ARI may predict the development of recurrent wheeze.
Researchers found that NDP1, a signaling molecule made from DHA, triggers the production of a protective protein against toxic free radicals and injury in the brain and retina. The discovery may contribute to possible therapeutic interventions for retinal degenerations and ischemic stroke.
Research by TUM found that low zinc levels can affect the heart's ability to deal with oxidative stress, leading to increased risk of heart disease. Zinc deficiency was also linked to upregulation of genes responsible for programmed cell death.
A research team at Mount Sinai has identified biological pathways involved in diabetic kidney disease, providing a potential diagnostic test and therapeutic strategy. The study found that blocking a cellular receptor can prevent kidney damage in mice with diabetic kidney failure.
A diet rich in fruit and vegetables is associated with a significantly lower risk of chronic lung disease (COPD) in former and current smokers. The study found that each additional daily serving was linked to a 4-8% lower risk, with the strongest influence coming from apples, green leafy vegetables, and peppers.
A subset of genes involved in daily circadian rhythms become active late in life or during intense stress, helping to protect critical life functions. These 'late-life cyclers' may combat serious stresses associated with age, disease, or environmental challenges.
Researchers from the University of Maryland have developed a blood test that can help doctors diagnose schizophrenia more quickly. The test measures oxidative stress in blood samples, which may be linked to the disorder and its treatment response.
Researchers found that as cells age, their fat content changes and lipid-related genes become more actively expressed. Lipid triacylglycerols may help the body cope with oxidative stress, protecting cells from damage caused by reactive oxygen species.
Scientists have designed a new class of molecular donors that can release therapeutic levels of hydrogen sulfide, a gas with protective effects on cells. This breakthrough could lead to treatments for conditions such as Alzheimer's and Parkinson's disease, where oxidative stress causes cellular damage.
A Japanese research team has found that 2-aminobutyric acid (2-AB) can effectively increase glutathione levels in the body, a major antioxidant component. The study suggests that 2-AB could be used as a biomarker for early detection of oxidative stress and potentially treat conditions such as Alzheimer's disease and heart failure.
Researchers used MRI measurements to detect higher levels of oxidative stress in patients with schizophrenia compared to healthy individuals and those with bipolar disorder. The study suggests that oxidation imbalance may contribute to the development and progression of schizophrenia.
Researchers induced oxidative stress in cultured RPE cells to explore the development of age-related macular degeneration (AMD). Oxidative stress led to cell senescence and proliferation inhibition, highlighting its potential role in AMD progression. The study suggests antioxidants may be a new treatment approach for AMD intervention.
Researchers found that combining FLT3 inhibition with drugs inducing oxidative stress improves efficacy against acute myeloid leukemia (AML). This approach, which targets genes involved in antioxidant response, shows promise for combination therapy.
Researchers investigate whether reducing sodium intake can lower inflammation and oxidative stress, key factors in cardiovascular disease. The study aims to connect the dots between salt consumption and cardiovascular risks.
Research from North Carolina State University shows that traveling honey bees have shorter lives and greater oxidative stress levels than stationary bees. Access to readily available food or supplemental nutrition can mitigate these negative impacts, particularly during periods of high flower scarcity.
Researchers found guarana to have higher antioxidant capacity than green tea due to its high catechin content. The study showed guarana reduced oxidative stress and improved lipid profiles in healthy volunteers.
A study by UMass Amherst researcher Alicia Timme-Laragy investigates the link between early life pollutant exposure and future diabetes risk. The researchers will expose zebrafish embryos to toxic chemicals, aiming to understand how environmental contaminants affect pancreas development.
A study published in PNAS reveals that cysteine deficiency contributes to oxidative stress and nerve cell damage in Huntington's disease. Cysteine levels affect the activity of ATF4, a protein involved in antioxidant defenses.
Antioxidant supplements have been linked to cardiovascular disease, cancer, diabetes, and other conditions due to their impact on oxygen radicals. However, the review suggests that targeting specific sources of oxygen molecules may be a more effective approach.
A pain medicine has been shown to preserve vision in a model of severe retinal degeneration by activating a receptor vital to a healthy retina. The drug (+)-pentazocine enables the survival of cone cells, allowing detailed color vision to remain intact.
People with major depressive disorder may have altered purine metabolism, with higher levels of xanthine and lower inosine and guanosine. This dysregulation may be the body's compensatory mechanism to combat increased oxidative stress caused by depression.
A systematic review published in Journal of Medicinal Food found that consuming sesame-based ingredients can increase antioxidants and reduce oxidative stress in individuals with high blood pressure and type 2 diabetes. Sesame oil has also been shown to prevent atherosclerosis in preclinical studies.
Researchers found that six genes, including four from a peroxiredoxin family, were affected by titanium dioxide nanoparticles in human HeLa cells and monkey kidney cells. The effect was seen after 24-hour exposure, with changes of about 50% in enzyme expression.
A study published in Nature Communications found that visceral fat is strongly linked to metabolic disease and insulin resistance. Researchers identified the regulatory molecule TRIP-Br2 as a key player in this process, which could lead to potential therapeutic agents against obesity.