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61,005 resultsShowing papers similar to Consequences of nano and microplastic exposure in rodent models: the known and unknown
ClearMicro- and nanoplastics (MNPs) and their potential toxicological outcomes: State of science, knowledge gaps and research needs
This review summarizes what is known about the toxicity of micro- and nanoplastics in mammals, drawing from both cell studies and animal experiments. Evidence suggests these particles can cause inflammation, oxidative stress, gut disruption, and reproductive harm, with effects depending on particle size, shape, and chemical composition. However, most studies use uniform lab-made particles rather than the irregular plastics humans actually encounter, making real-world risk assessment challenging.
Toxicological effects of micro/nano-plastics on mouse/rat models: a systematic review and meta-analysis
This meta-analysis pools data from mouse and rat studies to assess the toxic effects of micro and nanoplastics on mammalian health. The findings show that these particles can cause damage across multiple organ systems in lab animals, providing important evidence about the potential health risks that microplastic exposure may pose to humans.
Unseen Hazards—Toxicological Effects and Human Health Impacts of Nanoplastics and Microplastics
This review covers the toxicological effects of microplastics and nanoplastics in humans, examining exposure routes (oral, inhalation, dermal), tissue distribution, and mechanisms of harm including oxidative stress, inflammation, and endocrine disruption. It emphasises the importance of particle size, polymer type, and adsorbed chemical additives in determining toxicity.
Cellular and Systemic Effects of Micro- and Nanoplastics in Mammals—What We Know So Far
This review summarized known cellular and systemic effects of micro- and nanoplastics in mammals, finding that while ingestion is common, knowledge of health impacts remains limited, with oxidative stress and inflammation as the most reported biological responses.
Adverse Outcome Phenomena and Toxicity Mechanisms of Micro and Nanoplastics in Human Health
This review examines the growing evidence that micro- and nanoplastics can enter the human body through food, water, and air, and may contribute to harmful biological effects. Researchers found that these tiny particles can trigger oxidative stress, inflammation, and disruption of hormonal and immune systems in laboratory studies. The study highlights the need for a unified research approach to better understand how microplastic exposure may affect long-term human health.
Oxidative and Inflammatory Potential of Nano/Microplastics in Living Organisms
This review examines the growing body of evidence that microplastics and nanoplastics trigger oxidative stress and inflammatory responses across a wide range of animals, though the findings are often inconsistent and sometimes contradictory. The authors conclude that plastic particle weathering can alter these effects in complex ways, and call for standardized, systematic research to establish clearer dose-response relationships before firm regulatory conclusions can be drawn.
Advances on micro/nanoplastics and their effects on the living organisms: A review
This review examines the current state of research on how micro- and nanoplastics affect plants, animals, microorganisms, and humans. Researchers found that these tiny plastic particles can cause oxidative stress, inflammation, reproductive problems, and disruption of gut microbiomes across a wide range of species. The study highlights that while significant progress has been made in understanding these effects, major gaps remain in assessing long-term exposure risks at realistic environmental concentrations.
Exploring toxicological pathways of microplastics and nanoplastics: Insights from animal and cellular models
This review examines what animal and cell studies have revealed about how microplastics and nanoplastics cause harm at the molecular level, including promoting inflammation, oxidative stress, and cell death. Most research has focused on reproductive toxicity and polystyrene particles, while effects on the gut, brain, and heart remain understudied. The authors note that many experiments use unrealistic concentrations and synthetic particles, making it difficult to apply the results to real-world human exposure.
Potential human health risks due to environmental exposure to nano- and microplastics and knowledge gaps: A scoping review
This scoping review surveyed existing research on the potential human health effects of exposure to micro- and nanoplastics. The evidence suggests these particles may contribute to oxidative stress, inflammation, and immune disruption, but the review highlights major knowledge gaps and calls for more studies specifically focused on human health outcomes.
A review of potential human health impacts of micro- and nanoplastics exposure
This systematic review summarized 133 studies on how micro- and nanoplastics affect human health based on mammalian research. The evidence points to cell damage, inflammation, gut disruption, and reproductive harm, though most studies focused on polystyrene particles and more research is needed on other common plastic types.
Harmful effects of the microplastic pollution on animal health: a literature review
This review summarizes research on how microplastics affect the health of both aquatic organisms and lab animals like mice and rats. The animal studies suggest that microplastics could have a significant negative impact on human health, but the results are still mixed because experiments vary widely in plastic type, particle size, and dosage. More standardized research is needed before we can draw firm conclusions about the risks to people.
Environmental fate, ecotoxicity biomarkers, and potential health effects of micro- and nano-scale plastic contamination
This review provides a comprehensive overview of the environmental fate, ecotoxicity biomarkers, and potential health effects of micro- and nanoscale plastic particles. Researchers summarize how these particles move through ecosystems, accumulate in organisms, and trigger biological stress responses including oxidative damage and inflammation. The study emphasizes that while growing evidence points to harmful effects, more research is needed to understand the long-term health implications of chronic low-level exposure.
Cellular and Molecular Mechanisms of Micro- and Nanoplastics Driving Adverse Human Health Effects
This review examines the biological mechanisms by which micro- and nanoplastics may cause harm in humans, including oxidative stress, inflammation, disruption of protective barriers, and immune system problems. Evidence from lab and animal studies suggests these particles can affect the gut, heart, brain, and reproductive systems, though human data is still limited to detecting plastics in tissues rather than proving they cause specific diseases. The authors highlight that most studies use higher doses than people actually encounter, making it important to develop research models that better reflect real-world chronic exposure.
Micro(nano)plastic toxicity and health effects: Special issue guest editorial
Researchers summarized the state of microplastic and nanoplastic toxicology research, noting that while studies in animals show these particles accumulate in tissues and trigger inflammation, oxidative stress, and developmental harm, the actual health risks to humans remain largely unknown and urgently require further investigation.
Assessing micro and nanoplastics toxicity using rodent models: Investigating potential mitochondrial implications
This review examines recent rodent studies investigating how micro- and nanoplastics affect cellular health, with a focus on potential mitochondrial impacts. Researchers found that while no study has directly targeted mitochondrial effects, several reported molecular and biochemical changes consistent with disrupted mitochondrial function, including oxidative stress. The study suggests that mitochondria may be an important but understudied target of micro- and nanoplastic toxicity.
Human and ecological health effects of nanoplastics: May not be a tiny problem
This review examined the health effects of nanoplastics in humans and ecosystems, finding that while direct human evidence is limited, nanoplastic particles cross biological barriers more readily than larger fragments and trigger oxidative stress, inflammation, and endocrine disruption in animal models, suggesting the problem is far from trivial.
Micro- and nano-plastics activation of oxidative and inflammatory adverse outcome pathways
This review maps the biological harm caused by micro- and nanoplastics to formal toxicity pathways, finding that oxidative stress is a common starting point for damage at every level from cells to whole organisms. Researchers found that in ecological settings, this oxidative damage cascades into growth inhibition and behavioral changes, while in human health contexts it may trigger inflammatory responses. The study highlights that more mammalian research is needed to fully define the health risks of plastic particle exposure.
Micro- and nanoplastic toxicity: A review on size, type, source, and test-organism implications
This comprehensive review analyzed 615 studies on the toxicity of micro- and nanoplastics across different polymer types, sizes, and organisms. A major finding is that over 90% of nanoplastic research uses only polystyrene, leaving huge gaps in our understanding of other common plastics at the nanoscale. The review highlights that smaller particles are generally more toxic and that more research is urgently needed on the nanoplastics people are most likely to encounter in everyday life.
Micro/nanoplastics and human health: A review of the evidence, consequences, and toxicity assessment
This review summarizes evidence that micro and nanoplastics have been found in multiple human organs and body fluids, where they can alter cell shape, damage mitochondria, reduce cell survival, and cause oxidative stress. The health effects depend heavily on the size, shape, and chemical makeup of the particles, with smaller nanoplastics generally posing the greatest risk because they penetrate deeper into tissues. The review provides a framework for assessing how dangerous different types of plastic particles are to human health.
A review on microplastics and nanoplastics in the environment: Their occurrence, exposure routes, toxic studies, and potential effects on human health
This review summarizes what is known about how microplastics and nanoplastics enter the human body through food, air, and skin contact, and what they do once inside. Studies on cells and animals show these tiny particles can cause oxidative stress, DNA damage, inflammation, and harm to the immune, digestive, reproductive, and nervous systems. The research makes clear that microplastics are not just an environmental problem but a direct concern for human health.
Toxicological effects of micro/nano-plastics on human reproductive health: A review
This review summarizes research on how micro- and nanoplastics affect human reproductive health in both men and women. Evidence from animal and lab studies shows that these particles can accumulate in reproductive organs, disrupt hormones, damage eggs and sperm, and cause inflammation and oxidative stress. While human studies are still limited, the growing body of evidence suggests that microplastic exposure is a potential threat to fertility that warrants further investigation.
Effects of microplastics and nanoplastics on marine environment and human health
This review examines the effects of micro- and nanoplastics on marine environments and human health, covering sources, environmental fate, and biological impacts. Researchers summarize evidence that these particles can cause oxidative stress, inflammation, and disruption of gut microbiota in exposed organisms. The study highlights that while the full extent of health risks remains uncertain, the pervasive presence of plastic particles in food, water, and air makes continued research a public health priority.
A Systematic Review on the Impact of Micro-Nanoplastics Exposure on Human Health and Diseases
This systematic review summarizes existing research on how micro and nanoplastic exposure affects human health and may contribute to disease. The evidence suggests that these tiny particles can enter the body through food, water, air, and even cosmetics, potentially causing inflammation, oxidative stress, and disruptions to the immune and reproductive systems.
Potential Health Impact of Microplastics: A Review of Environmental Distribution, Human Exposure, and Toxic Effects
This review summarizes existing research on how microplastics are found throughout the environment and in human samples, entering the body through food, air, and skin contact. Lab studies in cells and animals show microplastics can cause oxidative stress, DNA damage, immune reactions, brain toxicity, and reproductive harm, and early human health data links microplastic exposure to several chronic diseases.