Articles tagged with Oxidative Stress
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Researchers found that African Americans experiencing racial discrimination had higher levels of oxidative stress, a potential pathway for cardiovascular and other age-related disease risks. The study suggests that psychological stress from racial discrimination may contribute to racial health disparities.
Biologists at USC discovered major declines in the availability of an enzyme, known as the Lon protease, as human cells grow older. The finding may help explain why humans lose energy with age and could point medicine toward new diets or pharmaceuticals to slow the aging process.
Research finds that growing up in a stressful household is associated with larger traffic pollution-induced lung deficits in healthy children. High levels of perceived stress among parents, particularly Hispanic and Asian families, led to decreased lung function in children exposed to traffic-related pollutants.
Researchers discovered a molecular link between pesticides and Parkinson's disease, shedding light on the oxidative stress that contributes to the neurodegenerative disorder. The study provides evidence that exposure to environmental toxins may be a primary cause of Parkinson's, with potential implications for prevention and treatment.
Researchers have discovered a protein called SIRT6 that improves DNA repair efficiency under oxidative stress, potentially leading to treatments for premature aging and cancer. The study found that increasing SIRT6 levels primed the cells to respond to DNA damage, allowing for faster repair of double strand breaks.
E-waste has been linked to adverse effects on human health, including inflammation and oxidative stress, which can lead to cardiovascular disease and cancer. Researchers found significant increases in inflammatory response and oxidative stress markers in lung epithelial cells exposed to e-waste air samples.
A new study found that animal personalities are reflected in their oxidative stress profiles, with timid birds experiencing higher levels of damaging oxygen toxins and weaker defenses. In contrast, curious birds had better defences against oxidative damage.
A study from Emory University School of Medicine found that measuring oxidative stress can predict the risk of developing atrial fibrillation. High levels of the amino acid cystine in blood are linked to increased risk, while factors like high blood pressure and obesity also play a role.
A study by Jackson Laboratory researchers reveals that mutations in the TDRD7 gene can cause juvenile cataracts and glaucoma, linked to a malfunctioning protein affecting eye lens development. The disorder disrupts stress granule production, leaving tissues susceptible to oxidative damage.
Researchers at Children's Hospital of Philadelphia found that feeding rats antioxidants during pregnancy prevented obesity and glucose intolerance in their offspring. The study suggests that preventing oxidative stress during pregnancy may lower the risk of childhood obesity.
Researchers have found that antioxidants can help prevent and treat breast cancer by targeting mitochondrial oxidative stress. The study, published in Cancer Biology & Therapy, used a genetically tractable model to show that loss of the tumor suppressor protein Caveolin-1 leads to increased oxidative stress, which fuels cancer cell gro...
Researchers at University of Rochester identify Nrf2 and Keap1 genes as key regulators of stem cell activity. Nrf2 prevents stem cell division, while Keap1 enables it when ROS levels increase.
Researchers focus on disrupting FLVCR protein in mosquitoes to block Plasmodium transmission, a crucial step in preventing malaria spread. By targeting this protein, they hope to develop a vaccine to stimulate an immune response and prevent the disease.
Researchers at Baylor College of Medicine discovered that thioredoxin-like 2 is highly expressed in cancer cells and helps protect them from oxidative stress. This protein plays a crucial role in cancer cell growth and survival, making it a promising target for future anti-cancer therapies.
Researchers found a molecular 'switch' called SMRT that turns off protective cellular activities against aging and metabolic diseases. The discovery could lead to new treatments for conditions like type 2 diabetes and heart disease.
Scientists are exploring the therapeutic potential of (+)- pentazocine in treating diabetic retinopathy. The study aims to determine if the drug can block or promote sigma receptor action and improve retinal health in patients. Researchers also want to know if the drug is effective when given later in the disease process.
Researchers found that extra-virgin olive oil and its extracts protect against oxidative damage of hepatic tissue in rats. The study showed a significant increase in antioxidant enzyme activity and a decrease in markers of liver damage, indicating potential health benefits of olive oil consumption.
Researchers found that local fishermen exposed to oil clean-up efforts two years prior showed persistent airway injury, including increased prevalence rates of respiratory symptoms and biomarkers of pulmonary oxidative stress. The study suggests even short-term exposure to oil sediments may have detrimental health effects.
A study conducted by University at Buffalo researchers found that resveratrol suppressed the generation of free radicals and reduced inflammation in human blood samples. The compound also showed promise in reducing insulin resistance and related markers, potentially benefiting conditions like type 2 diabetes and heart disease.
A new study published in Genetics found that mutations in 10 different genes of worms can extend lifespan without reducing oxidative stress. This discovery challenges the long-held notion that oxidative stress is responsible for aging and suggests a slow rate of metabolism may be key to increasing longevity.
Scientists discovered that adding antioxidant therapy to traditional antimalarial treatment can prevent long-lasting cognitive impairment in cerebral malaria. Oxidative stress is present in the brains of mice infected with cerebral malaria, and treating with antioxidants prevents cognitive damage.
Researchers found higher levels of oxidative and nitrosative stress markers, including anti-MDA and anti-HNE antibodies, in SLE patients with greater disease activity. These biomarkers suggest an imbalance between reactive oxygen and nitrogen species production and antioxidant defense mechanisms in SLE.
Researchers at the University of Florida found that anti-aging supplement mixtures may be more effective in preventing decline in physical function than single compounds. Taking such supplements before very old age can lead to improved grip strength and mitochondrial function, suggesting a potential window for intervention.
A new study found that consuming orange juice with a high-fat meal reduces oxidative stress and inflammation in blood vessels, which can contribute to heart attacks and strokes. The flavonoids naringenin and hesperidin in orange juice are believed to be the key players in this process.
A Kansas State University researcher is studying the potential of Chinese wolfberries to improve damage to the retina caused by type-2 diabetes. The findings show that the fruit can lower oxidative stress, protecting the eye and potentially preventing age-related macular degeneration and diabetic retinopathy.
Researchers at the University of Rhode Island have found that migratory birds prefer certain fruits rich in antioxidants and pigments. This study may provide insights into how humans can prevent disease through diet. The discovery highlights a potential partnership between plants and birds, where berries are eaten and seeds are dispersed.
A new study found that fruit flies without the key gene controlling circadian rhythms were more resilient to stress at a young age, but their health declined faster as they aged. The research suggests that biological clocks may play a role in aging and health, with intact genes potentially improving health and longevity.
Researchers found that car brake particles can cause cellular stress and inflammation in lung cells, particularly with heavy braking. Brake wear particles contain metals like iron and copper, which can damage cell junctions through oxidative stress.
Researchers at Emory University School of Medicine have identified a substance in the blood that may predict an individual's risk for heart disease. High levels of cystine, an oxidized form of the amino acid cysteine, were found to be twice as likely to result in a heart attack or death over a few years.
A University of Florida team has identified a protein that contributes to age-related hearing loss in the elderly. The findings suggest that enhancing antioxidant defenses may reduce damage and delay onset of hearing loss, offering new targets for therapy.
A new study has identified a gene essential to age-related hearing loss, which is linked to oxidative stress and programmed cell death. The researchers found that oral antioxidants can prevent the condition, providing hope for future treatments.
Researchers discovered fungal protein TmpL critical for pathogen development, shielding it from oxidative stress while aiding in infection. TmpL-deficient mutants were more sensitive to external oxidative stress, suggesting its role in protecting pathogens from host defense mechanisms.
A pioneering model of heart disease has been recognized with a $2.5 million NIH Pioneer Award, proposing that an antioxidant molecule may lead to disease when overproduced due to a gene mutation. Researcher Ivor J. Benjamin aims to investigate this theory and develop new treatments for reductive stress-related heart disease.
A melon-derived antioxidant supplement has been shown to relieve stress and fatigue in healthy volunteers. The study found significant improvements in perceived stress symptoms after 28 days, but not beyond the initial 7-day period of placebo effect.
Researchers have developed a new method to detect early signs of oxidative stress in cancer, which can be used to tailor treatments. The method identifies sulfenic acid in proteins, a marker of oxidative stress, and reveals that different individuals and tumor types have unique redox profiles.
Researchers have identified genes in yeast that enable it to respond to stress and are investigating ways to improve its performance by modifying its stress response mechanism. By manipulating these genes, they found a family of enzymes called sirtuins plays an important role in controlling wine yeast lifespan.
A study tracked genetic mutations in a roundworm over 5,000 years, finding that oxidative DNA damage is a primary cause of mutations. The research also showed that natural selection affects previously thought-to-be 'junk' DNA, suggesting new biological roles.
The study reveals that the hepatitis C virus blocks the actions of an ion channel, preventing apoptosis and enabling liver cells to resist cell death for longer. This discovery may offer a potential target for drug development through combination therapy.
A study published in JBC found that mice with defective mitochondrial protein MCLK1 lived longer and aged slower than normal mice. Despite high levels of oxidative stress, their inefficient mitochondria produced less energy and fewer oxygen radicals, accumulating less damage over time.
A UCLA study found that miniscule levels of carbon monoxide during pregnancy cause permanent brain damage in fetuses. The exposure level was established as safe by Cal/OSHA but still led to oxidative stress and protein loss.
Researchers at Mayo Clinic found that low doses of carbon monoxide can reverse gastroparesis, a common complication in diabetes. The study showed that carbon monoxide normalizes gastric functioning without increasing oxidative stress or HO1 expression.
Scientists at UC San Diego discovered the gene responsible for this effect, which prevents cellular damage from reactive oxygen species. The study found that Mga2 is essential for adaptation to oxidative stress and may explain why caloric restriction can raise ROS levels and provide protection.
Researchers found that eliminating the gene for cyclophilin A from mice prevented the development of abdominal aortic aneurysm and atherosclerosis. The study suggests that targeting cyclophilin A could potentially address both conditions, which are linked by shared biochemical pathways.
A study published at Experimental Biology 2009 found that regular exercise prevents the disruption of the blood-brain barrier caused by methamphetamine use. The study showed that exercising mice were protected from increased oxidative stress and permeability in the brain, while sedentary mice experienced damage.
A new study found that coffee and caffeine supplementation reduced oxidative stress and cell death in male mice with ALS, while female mice showed no benefit or even increased markers of stress. The researchers suggest women may want to restrict or switch to decaf products with antioxidants.
A team of scientists at Emory University School of Medicine identified a direct link between oxidative stress and inflammatory signals in the blood. They found that supplementing the diet with cysteine can reduce inflammation by blunting the impact of sepsis-like inflammation.
Researchers found that HIV-1 protease inhibitors like nelfinavir induce oxidative stress in pancreatic beta-cells, leading to decreased insulin secretion. Thymoquinone, an antioxidant from black seed oil, protects these cells by decreasing reactive oxygen species and increasing antioxidant levels.
Researchers at McGill University found that disabling the ability to clean cells of toxic molecules can lead to longer lifespan in some organisms. Oxidative stress theory is called into question, with evidence suggesting it may be a result of aging rather than its cause.
Researchers found that oxidantive stress impairs EPC function, a critical determinant in maintaining a healthy cardiovascular system. High cholesterol and oxidative stress are linked to cardiovascular diseases and diabetes.
Scientists discover that glutathione peroxidase 4 senses and translates oxidative stress into a distinct signaling pathway leading to cell death, highlighting potential therapeutic targets for mitigating degenerative diseases. This discovery sheds new light on the molecular mechanisms of oxidative stress and its role in cellular damage.
A study explores how daily stress affects blood pressure regulation and how genetics, obesity, and oxidative stress contribute to this process. The research aims to develop personalized treatments by identifying factors that make individuals respond differently to stress and therapy.
Researchers have discovered a new tool that can measure the extent of oxidative stress and determine how well antioxidants work. The study used a protein-based probe to detect fleeting bursts of superoxide production, which is associated with cellular damage in various diseases.
A recent study published in Diabetes Care found high levels of oxidative stress in coronary heart disease patients without type 2 diabetes were actually indicative of overt diabetes. This discovery highlights the importance of considering glucose abnormality as a potential underlying condition for heart disease.
Researchers found that markers of oxidative stress were positively associated with declines in lung function five years later. The study used data from the CARDIA cohort and found associations between oxidized LDL and lower lung function in both men and women, but particularly in women.
Researchers found that green tea polyphenols administered through drinking water improved spatial learning and memory in rats with intermittent hypoxia, mimicking OSA. This suggests that GTPs may represent a potential interventional strategy for patients with sleep-disordered breathing.
Atrial tachycardia is associated with mitochondrial dysfunction and oxidative stress, leading to NF-kB activation. Blockade of angiotensin II receptors, L-type calcium channels, NADPH oxidase, and inhibition of NF-κB activation can abolish or decrease tachycardia-dependent changes in atrial tissue.
Researchers have identified a common molecular disease pathway explaining how diverse non-infectious and infectious agents like anthrax, lung plague, SARS, and H5N1 avian influenza can cause severe lung failure with similar pathologies. Oxidative stress triggers the innate immune system, leading to severe lung damage.
Regular aerobic exercise significantly decreases oxidative stress levels and improves cardiovascular health in postmenopausal women. The study found that both HRT users and non-users benefited equally from the exercise program, reducing the risk of heart disease and stroke.
Patients with decompensated alcoholic cirrhosis exhibit higher levels of nitric oxide (NO•) and cyclic guanosine monophosphate (cGMP), contributing to liver disease progression. Elevated oxidative stress is also linked to a positive correlation with clinical liver disease severity.
Scientists have discovered a gene expression pathway that exerts a sweeping influence over the process of oxidative stress. This pathway could potentially be manipulated to mitigate damage caused by oxygen and prevent diseases such as heart disease, stroke, and aging.