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61,005 resultsShowing papers similar to The Effect of Sub-Acute Inhalation Exposure to Polyethylene and Polyvinyl Chloride Micro-Nano Plastics on the Superoxide Dismutase (SOD) Level and Malondialdehyde (MDA) Level in Rat Ovary
ClearIs microplastic an oxidative stressor? Evidence from a meta-analysis on bivalves
Microplastics induce time-dependent oxidative stress in bivalves, with antioxidant enzymes (GPx, GST, SOD) increasing during short-term exposure but declining after long-term exposure, while glutathione levels and catalase activity remained elevated throughout and may serve as reliable biomarkers of sublethal microplastic effects.
Sub-acute polyethylene microplastic inhalation exposure induced pulmonary toxicity in wistar rats through inflammation and oxidative stress
Researchers exposed rats to airborne polyethylene microplastics through inhalation for 28 days and found significant signs of lung damage. The exposed animals showed increased inflammation markers, elevated oxidative stress, and tissue changes in the lungs compared to controls. The study provides evidence that breathing in microplastic particles from degraded plastic bags and bottles may cause pulmonary toxicity.
Uptake of Breathable Nano- and Micro-Sized Polystyrene Particles: Comparison of Virgin and Oxidised nPS/mPS in Human Alveolar Cells
Researchers found that environmentally aged (oxidised) nano- and microplastics were rapidly taken up by human lung cells and caused significantly greater DNA damage, oxidative stress, and mitochondrial impairment compared to pristine particles, highlighting the heightened health risks of weathered airborne plastics.
Exposure to microplastics leads to a defective ovarian function and change in cytoskeleton protein expression in rat
Researchers exposed female rats to polystyrene microplastics over multiple reproductive cycles and found, for the first time, that the particles accumulated in different parts of the ovarian tissue. The microplastics reduced ovarian weight, disrupted the normal development of egg follicles, altered the reproductive cycle, and lowered estrogen levels. The study suggests these effects are driven by oxidative stress and changes in key structural proteins within the ovary.
Concerning influences of micro/nano plastics on female reproductive health: focusing on cellular and molecular pathways from animal models to human studies
This review summarizes research showing that micro- and nanoplastics can harm the female reproductive system in multiple ways, from reducing ovarian reserves and disrupting hormone balance to accumulating in the placenta and breast milk. Animal studies show these particles trigger oxidative stress and inflammation in reproductive tissues, and human studies have confirmed their presence in placental tissue and infant feces, raising concerns about effects on fertility and fetal development.
Polystyrene microplastics cause granulosa cells apoptosis and fibrosis in ovary through oxidative stress in rats
Researchers exposed female rats to polystyrene microplastics at different concentrations for 90 days and examined the effects on their ovaries. The study found that microplastic exposure caused cell death and tissue scarring in the ovaries through oxidative stress, suggesting that microplastics may have implications for female reproductive health.
The Effect of Subacute Exposure to Low-Density Polyethylene (LDPE) Microplastics on Oxidative Stress and Membrane Damage in Alveolar Macrophage Cells of Rattus Norvegicus Wistar Strain
Researchers exposed rat alveolar macrophage cells to low-density polyethylene microplastics via inhalation and measured oxidative stress (F2-isoprostanes) and membrane damage markers. Subacute microplastic inhalation increased oxidative stress indicators and membrane damage in lung immune cells, suggesting that inhaled plastic particles impair the lungs' front-line defenses.
Polystyrene-microplastics and DEHP co-exposure induced DNA damage, cell cycle arrest and necroptosis of ovarian granulosa cells in mice by promoting ROS production
Researchers found that co-exposure to polystyrene microplastics and DEHP (a common plastic additive) caused more damage to mouse ovarian cells than either pollutant alone, triggering excessive oxidative stress that led to DNA damage, cell cycle arrest, and cell death. These findings suggest that microplastics combined with their chemical additives may pose a synergistic threat to female reproductive health.
P-266 Profiling redox effects induced by micro-nanoplastics in the female reproductive system: insights from human granulosa cells
Researchers showed that nano- and microplastics are taken up by human granulosa cells and cause changes in viability, energy production, and antioxidant responses. The findings provide early evidence that plastic particles can interfere with cellular redox balance in the female reproductive system.
A review of the impact of micro‐ and nanoplastics on female reproduction: What we know and gaps in knowledge
This review examines what is known about how micro- and nanoplastics affect female reproductive health. Animal studies show these particles accumulate in ovarian tissue, disrupt hormones, and cause oxidative stress, leading to hormonal imbalances and ovarian damage, though research in humans is still limited.
Assessing the Impact of Polyethylene Nano/Microplastic Exposure on Human Vaginal Keratinocytes
Researchers exposed human vaginal skin cells to polyethylene micro and nanoplastics similar to what might be released from disposable period products. At high concentrations, the plastic particles were taken up by cells and caused cell death, inflammation, and oxidative stress. This is the first study to address this specific exposure route, highlighting a potential women's health concern from microplastics in menstrual products.
Effects of micro/nanoplastics on oxidative damage and serum biochemical parameters in rats and mice: a meta-analysis
A meta-analysis of 36 studies in rats and mice found that micro/nanoplastics significantly increase oxidative stress markers (ROS, MDA) and liver enzymes (ALT, AST) while depleting antioxidant defenses (SOD, GSH, GPx, CAT). Smaller particles administered orally over longer durations caused the most pronounced damage, with the liver showing the highest elevations in biochemical stress markers.
The effect of microplastics on oxidative stress appearance and activity of antioxidant enzymes in onion (Allium cepa L.) roots
Researchers exposed onion (Allium cepa) roots to polystyrene microplastics (PS-MPs) and polymethyl methacrylate microplastics (PMMA-MPs) at concentrations of 0.01, 0.1, and 1 g/L, measuring oxidative stress markers and antioxidant enzyme activity. While root growth was largely unaffected and reactive oxygen species did not accumulate to toxic levels, antioxidant enzyme activities (SOD, CAT, APX, PPX) increased at all concentrations, with PS-MPs showing stronger effects than PMMA-MPs.
Reproductive toxicity of microplastics role of oxidative stress in cellular and molecular damage
This review synthesizes in vitro, in vivo, and epidemiological evidence on how microplastics cause reproductive toxicity, focusing on oxidative stress as the central mechanism. MPs infiltrate reproductive tissues, generate reactive oxygen species, and disrupt gametogenesis, hormone regulation, and embryonic development across multiple species.
Impact of polystyrene microplastic exposure on lipid profile and oxidative stress status of male and female Wistar rats
Researchers found that polystyrene microplastic exposure in Wistar rats caused significant alterations in lipid profiles and increased oxidative stress markers, with effects varying between male and female rats and between pristine polystyrene and Styrofoam forms.
Environmental Microplastics Exposure and Its Biochemical Impacts on Human Oxidative Stress Markers: A Clinical Chemistry Perspective
This clinical chemistry review examined how environmental microplastic exposure affects oxidative stress markers in humans, synthesizing evidence on circulating reactive oxygen species, antioxidant enzyme changes, and inflammatory biomarkers. The authors found consistent evidence that MNP exposure elevates markers of oxidative damage across multiple tissue types.
Polystyrene Microplastics Induced Ovarian Toxicity in Juvenile Rats Associated with Oxidative Stress and Activation of the PERK-eIF2α-ATF4-CHOP Signaling Pathway
Researchers exposed juvenile female rats to polystyrene microplastics and found significant ovarian damage, including increased follicle death and reduced hormone levels. The microplastics triggered oxidative stress and activated a specific cellular stress pathway that led to programmed cell death in ovarian tissue. The study suggests that early-life microplastic exposure may pose risks to reproductive development in mammals.
Do microplastics induce oxidative stress in marine invertebrates?
This review examined whether marine invertebrates exposed to microplastics show evidence of oxidative stress — a common cellular response to toxic injury — finding support for this effect across multiple species and polymer types. Oxidative stress is a key mechanism by which microplastics may harm marine organisms.
Toxicity Induced by Micro-and Nanoplastics through Oxidative Stress: The Role of Co-Exposure to Other Chemical Pollutants
This review examined how micro- and nanoplastics cause oxidative stress — a form of cellular damage — in living organisms, particularly when combined with other chemical pollutants in the environment. Co-exposure to microplastics and chemicals like pesticides or heavy metals tends to be more damaging than either pollutant alone.
Uterine Microvascular Dysfunction After Plastic Particle Inhalation
Researchers investigated uterine microvascular reactivity in female Sprague Dawley rats after acute inhalation of aerosolized plastic particles to assess cardiovascular effects of micro- and nanoplastic exposures. The study aimed to define mechanisms of microvascular dysfunction caused by plastic aerosols, building on prior epidemiological work linking airborne particulate matter to adverse cardiovascular outcomes.
Microplastics and Oxidative Stress—Current Problems and Prospects
This review examines how microplastics cause oxidative stress, a condition where harmful molecules called free radicals damage cells. Microplastics have been linked to DNA damage, cell membrane disruption, mitochondrial problems, inflammation, and cell death, all driven by oxidative stress. These effects may contribute to serious health conditions including cancer and cardiovascular disease, though the authors note that more research is needed to fully understand the risks.
Microplastics, Endocrine Disruptors, and Oxidative Stress: Mechanisms and Health Implications
This review examines how microplastics and nanoplastics trigger oxidative stress as a central mechanism of toxicity across multiple organ systems, including reproductive, cardiovascular, hepatic, and neurological tissues. The study highlights that these particles often carry endocrine-disrupting chemicals like bisphenol A and phthalates, which together generate reactive oxygen species, impair mitochondrial function, and compromise antioxidant defenses.
Single inhalation exposure to polyamide micro and nanoplastic particles impairs vascular dilation without generating pulmonary inflammation in virgin female Sprague Dawley rats
A single inhalation exposure to polyamide (nylon) micro and nanoplastic particles impaired blood vessel function in female rats without causing obvious lung inflammation. This suggests that inhaled plastic particles may harm the cardiovascular system through pathways that do not involve the lungs directly. The finding is concerning because it means even brief exposure to airborne microplastics could affect heart and blood vessel health in ways that might go unnoticed.
Inhaled microplastics and lung health: Immunopathological effects and disease implications
This review examines the molecular mechanisms by which inhaled microplastics damage lung health, focusing on oxidative stress, inflammation, and immune disruption. Researchers found that microplastics trigger reactive oxygen species production, deplete antioxidants, impair mitochondrial function, and compromise immune defenses in lung tissue. The evidence indicates that microplastics may also act as carriers for other toxic pollutants, amplifying respiratory health risks.