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DNA Damage and Bisphenol Levels in Chronic Kidney Disease Patients Undergoing Hemodialysis
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This research measures bisphenol exposure levels and associated DNA damage in patients with chronic kidney disease, a population that may be especially vulnerable to endocrine-disrupting chemicals. Elevated bisphenol concentrations were found alongside markers of genomic stress, suggesting a potential link between plastic-derived chemical exposure and kidney-related health outcomes. The findings add to growing evidence that bisphenol contamination may contribute to or worsen chronic disease progression.
Bisphenol (BP) compounds are widely present in the environment, primarily due to their use as plastic additives. These substances involve health risks, particularly as endocrine disruptors. While the general population is chronically exposed, patients with end-stage chronic kidney disease undergoing hemodialysis (HD-CKD) represent a particularly vulnerable group. This is due to both impaired renal clearance of circulating BPs and potential contamination from plastic-containing dialyzers used in extracorporeal blood circulation. In this longitudinal study, from the 35 HD-CKD patients initially selected, 25 changed their conventional dialyzers to BPA-free dialyzers for 6 months. Blood serum samples were collected, at baseline and after the intervention, to quantify levels of five BP analogues: Bisphenol A (BPA), Bisphenol AF (BPAF), Bisphenol F (BPF), Bisphenol B (BPB), and Bisphenol S (BPS). Genotoxicity was assessed using the comet assay and the micronucleus test on peripheral white blood cells. Among the analyzed BPs, only BPAF showed a statistically significant reduction when using BPA-free dialyzers. In terms of genotoxicity, a significant decrease was observed only in primary DNA damage (mainly DNA strand breaks), with no notable changes in chromosomal damage. This is the first study to detect multiple BP analogues in HD-CKD patients, beyond BPA, and to associate human exposure to BPs with DNA damage biomarkers. The observed reduction in DNA damage in parallel with decreased BPAF levels highlights the importance of monitoring and minimizing BP exposure of this high-risk population.
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This conference abstract examined bisphenol exposure, measured through urinary biomarkers, and its association with genomic damage in patients with chronic kidney disease. The study found that higher bisphenol levels correlated with greater DNA strand breaks, supporting the role of plastic-derived chemicals in genotoxic harm to vulnerable patients.
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Tiny plastic particles have been found in human kidneys, blood, and urine, and this review pulls together existing research suggesting these particles—along with chemicals like BPA and PFAS often found in plastics—may be linked to kidney damage, high blood pressure, and chronic kidney disease. People on dialysis may face extra exposure because their blood repeatedly contacts plastic tubing and filters during treatment, making them an important group to study further. While the science is still developing, this research highlights why reducing plastic exposure and rethinking medical device materials could matter for protecting kidney health, especially in vulnerable patients.
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This study investigated whether kidney dialysis patients are being exposed to micro and nanoplastics during their treatments, since they process 300 to 600 liters of water per week. The researchers found several potential contamination points in the dialysis process and estimated that even with 99% filtration, plastic particles could still reach patients' kidneys. This is especially concerning because dialysis patients already have compromised kidney function and may be more vulnerable to plastic particle exposure.
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