4.7 Article

Raman Microspectroscopy evidence of microplastics in human semen

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SCIENCE OF THE TOTAL ENVIRONMENT
卷 901, 期 -, 页码 -

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ELSEVIER
DOI: 10.1016/j.scitotenv.2023.165922

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Microplastics; Human semen; Epididymis; Seminal vesicles; Raman Microspectroscopy

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This study analyzed semen samples collected from men living in a polluted area of Southern Italy and found 16 pigmented microplastic fragments. The presence of these microplastics could cause alterations in physiological functions, and the chemical composition analysis suggested ingestion and/or inhalation as the route of exposure to environmental microplastics.
The presence of microplastics (MPs) in human fluids and organs is a great concern, since, as highlighted by recent studies on animal models, they could cause alterations of several physiological functions, including reproduction. In this study, semen samples collected from men living in a polluted area of the Campania Region (Southern Italy), were analyzed to assess the presence of MPs. N. 16 pigmented microplastic fragments (ranging from 2 to 6 & mu;m in size) with spheric or irregular shapes were found in six out of ten samples. All the detected MPs were characterized in terms of morphology (size, colour, and shape) and chemical composition by Raman Micro -spectroscopy. Chemical composition showed the presence of polypropylene (PP), polyethylene (PE), poly-ethylene terephthalate (PET), polystyrene (PS), polyvinylchloride (PVC), polycarbonate (PC), polyoxymethylene (POM) and acrylic, suggesting ingestion and/or inhalation as a route of exposure to environmental MPs. In this work, we propose for the first time a mechanism by which MPs pass into the semen most likely through the epididymis and seminal vesicles, which are the most susceptible to inflammation.

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