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Associations Between Prenatal Dioxin-like Polychlorinated Biphenyls Exposure and Glucocorticoid and Androgenic Hormones in Umbilical Cord Blood.
Environ Res
January 2025
Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University. Zhengzhou, Henan, China. Electronic address:
This study investigates the association between prenatal exposure to dioxin-like polychlorinated biphenyls (DL-PCBs) and glucocorticoid and androgenic hormone levels in cord blood. We analyzed cord blood samples from 500 mother-infant pairs from China (2022-2023), focusing on hormones including cortisol, cortisone, dehydroepiandrosterone (DHEA), and androstenedione. The main analysis revealed significant reductions in cortisol levels with increased exposure to PCB-77 (β = -3.
View Article and Find Full Text PDFToxicity assessment of airborne ultrafine particles: Role of transport emissions.
Sci Total Environ
January 2025
Institute of Environmental Assessment and Water Research, CSIC, 08034 Barcelona, Spain. Electronic address:
Airborne quasi-ultrafine particle samples were collected from different outdoor sites in Barcelona (NE Spain, 35 samples) and the Valencia subway (about 400 km south of Barcelona, 3 samples). Locations and schedules were designed to cover cold and warm seasons and to represent the impact of different types of transport (cars, trains, ships, and planes). Extracts from PTFE filters (methanol:dichloromethane 1:2) were used to test toxic effects in human cell lines (Induction of reactive oxygen species, inflammatory response) and in zebrafish embryos (expression of xenobiotic response-related genes, cyp1a1, gsa1 and hao1).
View Article and Find Full Text PDFEnvironmental contaminants assessment for frequently harvested migratory waterfowl in the Northeast Atlantic flyway.
Sci Total Environ
January 2025
Wildlife Health Lab, Animal Health Diagnostic Center, College of Veterinary Medicine, Cornell University, 240 Farrier Rd, Ithaca, NY 14853, USA. Electronic address:
Waterfowl serve as indicators of ecosystem health and represent a pathway of contaminant exposure for hunters who consume them. In the northeast Atlantic Flyway, data on baseline contaminant loads in waterfowl are lacking. We assessed five species of commonly harvested (and consumed) waterfowl for mercury, polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans, polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), and per- and polyfluoroalkyl substances (PFAS).
View Article and Find Full Text PDFAtmospheric aggravation potential of a wastewater treatment plant concerning organochlorine pesticides, polychlorinated biphenyls, and polybrominated diphenyl ether emissions.
Chemosphere
February 2025
Bursa Technical University, Department of Environmental Engineering, Bursa, Turkiye. Electronic address:
The pollution potential of a municipal wastewater treatment plant (WWTP) in Bursa, Türkiye, in terms of organochlorine pesticides (ΣOCPs), polychlorinated biphenyls (ΣPCBs), and polybrominated diphenyl ethers (ΣPBDEs), was investigated in air samples. Concentrations were determined using polyurethane foam disk samplers at key processes, such as the aeration tank (AT) and settling chamber (SC) of the WWTP and the background area (BA) at an urban site. Atmospheric concentration levels of PBDEs at the SC are 1.
View Article and Find Full Text PDFNationwide monitoring of polychlorinated naphthalenes in soils across South Korea: Spatial distribution, source identification, and health risk assessment.
Chemosphere
February 2025
Department of Civil, Urban, Earth, and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea; UNIST Environmental Analysis Center, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea. Electronic address:
Article Synopsis
- The study reveals that even though the use of polychlorinated naphthalenes (PCNs) was banned long ago, they are still found in South Korean soils due to their persistence and emissions from industrial activities.
- Industrial sites show significantly higher levels of PCNs compared to urban and suburban areas, with combustion sources being the primary contributor to contamination.
- Monitoring data indicates that while cancer risks from PCNs are generally within acceptable limits, children are at a higher risk, suggesting the need for continued monitoring and assessment of these hazardous substances.
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