Showing 61-75 of 1082
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Assessment of Per-and Polyfluoroalkyl Substances (PFAS) in Traditional, Organic and Protein Flours
Science
3 Sep 2024 | Exposure and Health
Flours, including traditional, organic, and protein varieties, contain detectable levels of specific PFAS like PFOA and PFDA, potentially contributing significantly to overall PFAS exposure, yet current regulations lack specific safety limits for these contaminants in flours.
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Asthma and Decreased Lung Function in Children Exposed to Perfluoroalkyl and Polyfluoroalkyl Substances (PFASs): An Updated Meta-Analysis Unveiling Research Gaps
Science
23 Aug 2024 | Environ. Res.
Exposure to PFOA is associated with a higher risk of asthma in children, while PFOS does not show a clear link to decreased lung function. Further research with larger and more consistent studies is needed to better understand these relationships and their underlying mechanisms.
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The perfluorooctanoic acid accumulation and release from pipelines promoted growth of bacterial communities and opportunistic pathogens with different antibiotic resistance genes in drinking water
Science
22 Aug 2024 | J Hazard Mater
PFOA promotes the growth of harmful bacteria and the spread of antibiotic resistance genes in drinking water by enhancing bacterial metabolism, increasing protective substances, and facilitating gene transfer, leading to serious health risks.
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Examining the Impact of Polyfluoroalkyl Substance Exposure on Erythrocyte Profiles and Its Related Nutrients: Insights from a Prospective Study on Young Taiwanese
Science
29 Jul 2024 | Environ. Pollut.
A decade-long study of 502 young Taiwanese individuals found that PFAS exposure is associated with changes in erythrograms, linking specific PFAS compounds to increased transferrin saturation and decreased vitamin B12 levels, with significant interactions involving iron status, vitamin B12, and folate.
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Associations between prenatal exposure to per- and polyfluoroalkyl substances and plasma immune molecules in three-year-old children in China
Science
27 Jul 2024 | Toxicol Appl Pharmacol
Prenatal exposure to PFAS significantly affects immune molecule levels in three-year-old children, with specific PFAS linked to increases in interleukins and Eotaxin-3, which help regulate the immune system, highlighting the need to understand environmental impacts on early immune development.
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Prenatal Exposure of PFAS in Cohorts of Pregnant Women: Identifying the Critical Windows of Vulnerability and Health Implications
Science
25 Jul 2024 | Environ. Sci. Technol.
From 2018 to 2020, a prenatal PFAS exposure study in pregnant women and their newborns showed a decline in older PFAS but an increase in emerging PFAS and highlighted the third trimester as a critical window affecting birth weight and length.
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What is ‘Teflon flu’? It’s linked to a coating on some nonstick pans.
News
16 Jul 2024 | The Washington Post
Confirmed cases of the illness remain rare, but scientists said some pans can burn off potentially harmful fumes if heated to very high temperatures.
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Occurrence and potential ecological risks of PFAS in Pampulha Lake, Brazil, a UNESCO world heritage site
Science
10 Jul 2024 | Sci Total Environ
PFAS have been found in high concentrations in Pampulha Lake, Brazil, posing ecological risks and potential health concerns due to bioaccumulation in fish, highlighting the need for more research in urban watersheds of low and middle-income countries.
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Adsorption behaviors of perfluorooctanoic acid on aged microplastics
Science
6 Jul 2024 | Water Environ. Res.
Aged microplastics can adsorb PFAS, like PFOA, with the process influenced by environmental factors such as salinity and dissolved organic matter, underscoring the need for more research on these interactions in real-world conditions.
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The Total Mass of Per- and Polyfluoroalkyl Substances (PFASs) in California Cosmetics
Science
27 Jun 2024 | Environ Sci Technol
Cosmetics sold in California were found to contain between 650 to 56,000 kg of PFAS annually, with the majority coming from shaving creams, hair care products, facial cleansers, sun care products, and lotions, contributing 4% to the PFAA load in wastewater treatment plants.
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In silico prediction of the interaction of legacy and novel per- and poly-fluoroalkyl substances (PFAS) with selected human transporters and of their possible accumulation in the human body
Science
17 Jun 2024 | Arch Toxicol
PFAS were examined through computer simulations, revealing that legacy PFAS like PFOA and PFOS have a higher propensity to interact with human proteins involved in chemical transportation and accumulation, suggesting a greater potential for bioaccumulation compared to newer PFAS formulations.
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Carry-over rate of per- and polyfluoroalkyl substances to raw milk and human exposure risks in different regions of China.
Science
11 Jun 2024 | Sci Total Environ
The presence of PFAS in cow feed, drinking water, and raw milk across 20 regions in China reveals significant health risks, particularly for preschool children, due to the accumulation and transfer of these substances through milk consumption.
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The bioaccumulation and ecotoxicity of co-exposure of per(poly)fluoroalkyl substances and polystyrene microplastics to Eichhornia crassipes
Science
3 Jun 2024 | Water Res
Gen X and F-53B, used as alternatives to PFOA and PFOS, respectively, show significant bioaccumulation and eco-environmental risks, especially when co-exposed with polystyrene microplastics, which increase their bioavailability and toxicity to the aquatic plant Eichhornia crassipes.
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Immune cell profiles associated with human exposure to perfluorinated compounds (PFAS) suggest changes in Natural Killer, T helper and T cytotoxic cell subpopulations
Science
23 May 2024 | Environ Res
Exposure to various PFAS chemicals, even at low levels, is associated with changes in immune cell subpopulations, potentially explaining the immunosuppressive effects observed in epidemiological studies.
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A multi-platform approach for the comprehensive analysis of per-and polyfluoroalkyl substances (PFAS) and fluorine mass balance in commercial ski wax products
Science
21 May 2024 | Analytica Chimica Acta
The fluorine content of ski waxes was tested, finding that while traditional analytical methods identified only a small fraction of fluorine as extractable organic fluorine, the majority remained unidentified, suggesting the presence of other PFAS not detected by standard techniques, which highlights the need for more comprehensive analysis methods in assessing PFAS exposure risks in consumer products.