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Molecular and Cellular Effects of Microplastics and Nanoplastics in the Pathogenesis of Cardiovascular, Nervous, Urinary, Digestive, and Reproductive System Diseases: A Global Systematic Review
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This systematic review examines how micro- and nanoplastics cause damage at the cellular level across multiple body systems, including the heart, brain, kidneys, gut, and reproductive organs. The key mechanisms include oxidative stress, inflammation, and disruption of protective barriers in the body, suggesting that ongoing plastic exposure may contribute to a wide range of health problems.
Microplastics (MPs) and nanoplastics (NPs), formed as a result of plastic product degradation, pose a global environmental threat by penetrating biological systems and inducing systemic pathological changes. This systematic review, conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews guidelines, aims to analyze the molecular and cellular mechanisms of the toxic effects of MPs and NPs on the human cardiovascular, nervous, reproductive, urinary, and digestive systems. The primary mechanisms include oxidative stress, inflammation, mitochondrial dysfunction, apoptosis, autophagy, ferroptosis, and impaired barrier functions. In the cardiovascular system, MPs and NPs contribute to endothelial dysfunction, disorders of lipid metabolism, and fibrosis; in the nervous system, they promote neuroinflammation, pathological protein aggregation, and psychiatric disorders; in the reproductive system, they lead to hormonal imbalance and reduced fertility; in the kidneys, they cause inflammation, and fibrosis and lead to deterioration of kidney function; and in the gastrointestinal tract, they contribute to dysbiosis and metabolic disorders. The literature search was conducted in the PubMed, Web of Science, and Scopus databases without limitations on date, language, or access. Studies were selected based on criteria of transparency, statistical validity, sample representativeness, and correctness of data interpretation. The review emphasizes the necessity of an interdisciplinary approach to developing prevention and treatment strategies, including reduction in exposure, antioxidant and immunomodulatory therapy, and restoration of barrier functions and microbiota. The data obtained reveal research gaps and identify directions for further study.
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This review synthesizes current knowledge on how micro- and nanoplastics cause cellular damage in the human body, covering mechanisms like oxidative stress, inflammation, DNA damage, and disruption of cell signaling pathways. Researchers note that exposure occurs through multiple routes including ingestion and inhalation, allowing particles to reach organs throughout the body. The study highlights significant gaps in understanding long-term and low-dose exposure effects that are most relevant to everyday human contact with these particles.
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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.
Cellular and Systemic Impacts of Microplastics and Nanoplastics
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This review synthesized evidence on how micro- and nanoplastics cause cellular and systemic harm through inflammation, oxidative stress, mitochondrial dysfunction, and endocrine disruption across multiple organ systems. The authors emphasize that exposure is ubiquitous and that health impacts are no longer speculative.
Cellular and Systemic Impacts of Microplastics and Nanoplastics
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This review systematically examined the cellular and systemic health impacts of micro- and nanoplastics, covering uptake mechanisms, organ distribution, and effects on inflammation, oxidative stress, and endocrine function. The authors conclude that MNPs pose credible risks to multiple body systems and call for stronger regulatory action.
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