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Toxicity assessment and detection of PVC nanoplastics in reproductive cell models by μ-XRF and extension to endometrial cells
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Researchers are extending synchrotron X-ray fluorescence microscopy to map PVC nanoplastic distribution across spermatozoa, cumulus cells, and endometrial cells, tracking cadmium and chlorine as elemental tracers to assess how plastic particle accumulation may interfere with fertilization and embryo implantation.
The proposed project aims to extend our investigations on the cellular interactions of micro- and nanoplastics (MNPs) within the human reproductive system by combining synchrotron-based X-ray fluorescence (XRF) microscopy with in vitro exposure models. Building on our preliminary findings, we intend to increase the statistical robustness of analyses on spermatozoa and cumulus cells, while expanding the scope of the study to include endometrial cells. This approach will allow us to assess the distribution of plastic-associated elements (e.g., Cd from quantum-dot labels and Cl from PVC particles) across distinct reproductive cell types, and to explore how their presence may affect fertilization and embryo implantation.
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Ovarian Cell Accumulation of Model PVC Nanoplastics Labelled With CdSe ‐ QDs Investigated by X‐Ray Fluorescence Microscopy
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Researchers used advanced X-ray fluorescence microscopy to track the accumulation of PVC nanoplastics inside human ovarian cells at near-cellular resolution. They confirmed that the nanoplastics entered the cells and remained intact without releasing their fluorescent labels, while also observing changes in the cells' mineral composition. The study raises concerns about the potential for nanoplastics to accumulate in reproductive tissues and affect cellular function.
Polyethylene andPolyvinyl Chloride Nanoplastics inHuman Follicular Fluid and Seminal Plasma: Impact on Fertilizationand Sperm Quality
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Researchers used pyrolysis GC/MS to detect polyethylene (PE) and polyvinyl chloride (PVC) nanoplastics in follicular fluid and seminal plasma from 51 IVF couples. Both polymers were present in both reproductive fluids, and while associations with fertilization outcomes were not statistically significant, the detection of nanoplastics in human reproductive fluids represents a novel concerning finding.
Resolving polymeric nanoplastics in human cumulus cells by synchrotron X-ray fluorescence and light nano-imaging
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Scientists used powerful X-ray imaging tools to actually pinpoint individual nanoplastic particles hiding inside human ovarian cells—something that's been extremely hard to do because these particles are so tiny and rare. This matters because it confirms nanoplastics can lodge directly within cells that support egg development, and it gives researchers a new, precise way to study whether these particles might affect fertility or be passed on during early pregnancy. The study itself doesn't prove harm yet—it's a proof-of-concept showing this detection method works, paving the way for future research on reproductive health risks.
Plastics in human reproductive tissues: A systematic review of detection, characterization, and effects on fertility.
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This review summarizes 41 studies on tiny plastic particles found in human reproductive tissues, including semen, testis, follicular fluid, and placenta. These particles were linked to cell stress, metabolic changes, and in some studies, poor sperm motility, though effects on ovarian markers and fertility outcomes were inconsistent across studies.
Synchrotron-based Spectromicroscopy for Microplastic Detection and Characterization
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Researchers reviewed how synchrotron-based imaging techniques — which use powerful X-ray beams to see extremely fine details — can detect and chemically identify micro- and nanoplastics that conventional methods miss, including plastics absorbed into biological tissues. These high-resolution tools are still in early stages but show strong potential for mapping microplastic contamination at the nanoscale.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.