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Microplastics in nucleus pulposus tissue of humans revealed by Raman mosaic imaging screening
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Scientists looked at the soft, gel-like tissue inside spinal discs from 51 patients who had back surgery, and found tiny plastic particles in 5 of them—including bits of polyurethane foam and other polymers, some smaller than the width of a human hair. This is one of the first times plastics have been found in this particular part of the spine, and while it doesn't yet tell us whether these particles cause harm, it adds to growing evidence that microplastics can turn up in surprising places throughout the body. More research is needed to understand how they get there and whether they affect spinal health.
Microplastics (MPs) have been detected in various tissues, yet evidence regarding the relatively isolated nucleus pulposus (NP) remains limited. This study investigated MPs in NP tissues from 51 patients undergoing lumbar disc herniation (LDH) surgery in Wuhan, China. Samples underwent chemical digestion and filtration, followed by candidate-particle screening using an operator-assisted micro-Raman spectroscopy mosaic imaging workflow and targeted Raman spectral assignment. Microplastic-sized polymer particles were Raman-assigned in five patients, including polyurethane foam, poly (propylene glycol), poly (ethylene-co-vinyl acetate), polyacrylate rubber, and poly (ethylene-co-propylene). A graphite particle was also detected in one additional patient. Specifically, nine particles ranging from 37 to 280 μm were detected across six patients; notably, most were smaller than 100 μm. To reduce false-positive assignments, procedural blanks and five known surgical materials were analyzed, and particles matching these sampled materials were excluded. This study provides preliminary evidence of particulate contaminants in NP tissue, demonstrating the feasibility of detection in this understudied anatomical compartment and establishing a methodological foundation for future investigations.
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Microplastics and nanoplastics in matched human blood, bone, and intervertebral discs: Accumulation patterns and risks
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Scientists found tiny plastic particles (microplastics and nanoplastics) in the blood, bone, and spinal discs of 21 patients undergoing back surgery—and the discs, which have poor blood flow and repair themselves slowly, tended to accumulate the most plastic. While the chemical risks appear low for now, the buildup of these particles in slow-healing tissue raises concerns that plastics could physically contribute to tissue damage or degeneration over time, something worth watching as plastic pollution continues to rise.
From accumulation to degeneration: Microplastics as emerging risk factors for intervertebral disc health
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Researchers reviewed evidence that microplastics accumulate in human intervertebral disc tissue at significantly higher concentrations (61 ± 44 particles/g) than in bone or cartilage, and discussed mechanisms by which this accumulation may contribute to disc degeneration.
From Environmental Exposure to Intervertebral Disc Degeneration: First Evidence of Pro-Degenerative Effects of Polyamide 6 Microplastics
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Scientists found tiny plastic particles (from a common plastic called polyamide 6, used in fabrics and packaging) already present in human spinal disc tissue, and lab tests showed these particles can damage the cells that keep spinal discs healthy and cushioned. This is early-stage lab research, not proof that plastics cause back problems in people, but it's one of the first studies suggesting a direct link between microplastic exposure and spinal disc degeneration—a condition linked to chronic back pain—making it a topic worth watching as scientists dig deeper into how everyday plastic exposure might affect our bodies.
The Human Intervertebral Disc as a Long-Term Repository for Micro/Nanoplastics: Tissue-Specific Accumulation and Risk Estimation
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Researchers quantified microplastic and nanoplastic accumulation in blood, bone, and intervertebral disc tissue from 21 surgical patients, finding a distinct disc-enriched accumulation profile in nearly half of individuals, with nanoplastics dominated by polyvinyl chloride and polyamide 66, suggesting the avascular disc may serve as a long-term plastic reservoir.
Microplastics in human skeletal tissues: Presence, distribution and health implications
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This study is the first to find microplastics in human bones, cartilage, and spinal discs, with the highest concentrations found in spinal discs. The most common plastics detected were polypropylene and polystyrene, and animal experiments confirmed that microplastics can reach skeletal tissues through the bloodstream. Exposure triggered inflammatory markers in the blood, suggesting microplastics in bones could contribute to skeletal health problems.
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