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Comparative Analysis of Microplastics Detected in Human Colorectal Cancer Tissues from Two Countries
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Researchers compared the physical and chemical characteristics of microplastics found in colorectal cancer tissue samples from patients in the United States and Malaysia. Using scanning electron microscopy and Fourier transform infrared spectroscopy, they identified differences in the types and properties of microplastics between the two countries. The study provides early comparative evidence that microplastics are present in human tumor tissues across different populations.
Abstract Microplastics are pervasive in the environment with potential health effects. Our study aimed to compare the physical and polymer characteristics of microplastics found in colorectal cancer samples from the United States and Malaysia. Microplastics were extracted from the tissues using chemical digestion of 10% potassium hydroxide and surface morphology was examined under a scanning electron microscope. Polymeric composition of microplastics incorporated micro-fourier transform infrared spectroscopy in the analysis. Microplastics were detected in all samples, and the Malaysian samples exhibited a higher abundance (32.2 items/g) than the American samples (25.9 items/g). Similar shapes were observed in both groups with fibers being the most abundant. American samples have longer category size (Category II=501-1000 µm) than the Malaysian samples (Category I=<500 µm). Both groups exhibited surface roughness on their microplastics and similar polymer types including polyethylene (PE), polypropylene (PP), polyamide (PA) and polycarbonate (PC). Acrylonitrile butadiene styrene (ABS) was only found in the American samples. In conclusion, microplastics are ubiquitous in human tissue samples despite different population and different sampling time.
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Comparative Analysis of Physical and Polymer Characteristics of Microplastics Detected in Human Colorectal Cancer Samples From the United States and Malaysia
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Researchers compared the physical and chemical characteristics of microplastics found in colorectal cancer tissue samples from patients in the United States and Malaysia. Microplastics were detected in samples from both populations, with some similarities in polymer types but also distinct differences in particle size and shape between the two groups. The study adds to growing evidence that microplastics accumulate in human tissues, though more research is needed to understand any potential health implications.
Detection of Microplastics in Patients with Colorectal Adenocarcinoma using Various Techniques
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Researchers detected microplastics in tumoral and non-tumoral colon tissues of colorectal adenocarcinoma patients and healthy controls using ATR-FTIR and Raman spectroscopies, finding that tumoral tissues contained significantly higher microplastic counts than non-tumoral or healthy tissues. The identified polymers included polyethylene, poly(methyl methacrylate), and nylon, suggesting a potential link between microplastic exposure and colorectal cancer.
Analytical Trends and Pathogenesis of Microplastics in Human Cancer Tissues: A Toxicology Mini-review
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This toxicology mini-review synthesizes evidence that microplastics have been identified in human cancer tissues — including colorectal, prostate, lung, gastric, and cervical tumors — using analytical tools like µ-FTIR and Raman spectroscopy. The findings suggest microplastics may preferentially accumulate in cancerous tissues and could play a role in tumor development and progression.
Higher number of microplastics in tumoral colon tissues from patients with colorectal adenocarcinoma
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Researchers found higher concentrations of microplastics in cancerous colon tissue compared to healthy tissue from the same patients, suggesting a possible link between microplastic accumulation and colorectal cancer, though this study cannot yet establish whether microplastics cause the disease.
Microplastic accumulation in paired human breast tumor and para-tumor tissues and exploratory clinical associations
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Researchers used laser direct infrared spectroscopy to characterize microplastics in matched tumor and adjacent normal breast tissue from seven patients, detecting 26 polymer types with chlorinated polyethylene most prevalent, and found a trend toward higher total MP abundance in tumor tissue — offering the first polymer-level mapping of microplastic distribution in paired human breast tissue samples.
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