Research Results
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2025
Ecotoxicol Environ Saf
This study analyzed six xenoestrogens (hormone-disrupting chemicals including phthalates, BPA, and alkylphenols) in atmospheric particles at a university campus in China from 2021 to 2023. BPA was the most prevalent xenoestrogen detected, with concentrations of these chemicals being significantly higher in winter than summer, and the overall cancer and non-cancer health risks were below threshold limits for the general population. However, infants and young children showed significantly higher risk values compared to other age groups, indicating they face greater health risks from atmospheric exposure to these endocrine disruptors. The research provides important data for developing policies to reduce health risks from airborne xenoestrogen exposure, particularly for vulnerable populations like children.
2022
Cancer Epiemiol
The first Indian case-control study examining phthalates (chemicals widely used in plastics, cosmetics, and food packaging) and breast cancer found that women with higher urinary levels of di-butyl phthalate (DBP) had 1.5 times increased breast cancer risk, while those with higher DEHP levels had nearly 3 times increased risk. Analysis of breast tumor tissue revealed mutations in several genes known to respond to phthalate exposure, affecting pathways involved in hormones, metabolism, and cancer development. These findings suggest that exposure to certain phthalates may increase breast cancer risk through genetic changes, though larger studies are needed to confirm these results and understand how early-life exposures might contribute to cancer development later in life.
2019
J Clin Oncl
This large-scale Danish nationwide study followed 1.12 million women over nearly 10 million woman-years to examine the relationship between phthalate exposure from prescription medications and breast cancer risk. The researchers tracked phthalate exposure by linking a database of drug ingredients with prescription records, finding that most phthalate exposures were not associated with increased breast cancer risk. However, high-level cumulative exposure to dibutyl phthalate (≥10,000 mg) was associated with approximately double the risk of estrogen receptor-positive breast cancer, consistent with laboratory evidence showing this compound has estrogenic effects. The study concludes that women should avoid high-level dibutyl phthalate exposure, particularly through long-term use of pharmaceuticals containing this compound, though lower exposure levels did not increase breast cancer risk.
2023
Compr Rev Food Sci Food Saf
A systematic review of phthalate contamination in food identified 19 phthalates across multiple food categories, with 57 measurements exceeding legal limits and DEHP showing the highest incidence; risk assessment revealed high probability of exceeding tolerable daily intake for DEHP and DBP in fish, oils/fats, cereals, and dairy for both children and adults, with fats/oils being the most critical category. Migration from food contact materials is positively correlated with temperature, contact time, fat content, and acidity, with contamination occurring throughout the production chain. The widespread contamination exceeding safe exposure limits—particularly for vulnerable populations including children—highlights the urgent need for stricter regulation of phthalates in food packaging and production materials.
2015
Carcinogenesis
This study explores the linkage between environmental chemical exposures and cellular resistance to cell death, a carcinogenic trait. The researchers in this study specifically investigate BPA, chlorothalonil, dibutyl phthalate, and more because of their disruptive effects that may be involved in these carcinogenic pathways. The researchers found that arsenic interferes with cellular signaling pathways and induces oxidative stress, leading to impaired apoptosis; dioxins bind to aryl hydrocarbon receptors (AHRs), which alters gene expression and disrupts normal cell death processes; BPA mimics the estrogen hormone, affecting hormonal balance and promoting cell survival pathways that inhibit cell death. By allowing cells to evade cell death, these environmental chemicals can promote the survival of cells with genetic mutations and therefore increase the risk of cancer development.