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Ocean as source or sink for legacy persistent organic pollutants.
J Hazard Mater
December 2024
College of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai 201306, China.
With the phase-out of legacy persistent organic pollutants (POPs), the ocean's role is evolving, potentially acting as both a reservoir and a source. This study investigates the air-sea fluxes of the first banned POPs, such as organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs), using literature from Web of Science up to 2023. OCP and PCB concentrations in air and seawater show significant spatiotemporal variability.
View Article and Find Full Text PDFAccumulation of lipophilic and proteinophilic halogenated organic pollutants (HOPs) in the different types of feathers of laying hens.
J Hazard Mater
December 2024
State Key Laboratory of Organic Geochemistry and Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China.
This study investigated the bioaccumulation of halogenated organic pollutants (HOPs) in three types of feathers from laying hens through exposure experiments. The HOPs included lipophilic polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs), as well as proteinophilic perfluoroalkyl carboxylic acids (PFCAs). Concentrations of PCBs, PBDEs, and short-chain PFCAs (≤8) were significantly higher in the body feathers than in the primary feathers, while long-chain PFCAs (>8) showed no significant differences among primary, tail, and body feathers.
View Article and Find Full Text PDFRelationships among CYP2B6 genetic variants and serum levels of multiple polychlorinated biphenyls and hydroxylated metabolites in a Japanese population.
J Hazard Mater
December 2024
Department of Health and Environmental Sciences, Kyoto University Graduate School of Medicine, Yoshida Konoe, Sakyo, Kyoto 606-8501, Japan. Electronic address:
Article Synopsis
- Production of polychlorinated biphenyls (PCBs) has been banned since 2001, but health risks from exposure continue due to their metabolism by enzymes like CYP2B6, where gene polymorphisms may influence this process.
- The study analyzed blood samples from 129 individuals to explore the relationship between specific CYP2B6 gene variants and levels of PCBs and their metabolites (OH-PCBs), finding variations in metabolism linked to different genotypes, particularly *1/*4 and *6/*6.
- Results showed that the *1/*4 genotype was correlated with higher metabolite-to-parent compound ratios for certain PCBs, while the *6/*6 genotype showed the opposite effect, indicating complex interactions between genetic factors
[Research advances in the transplacental transfer efficiencies of environmental pollutants].
Se Pu
January 2025
School of Public Health, Wuhan University, Wuhan 430071, China.
Industrialization has led to significant increases in the types and quantities of pollutants, with environmental pollutants widely present in various media, including the air, food, and everyday items. These pollutants can enter the human body via multiple pathways, including ingestion through food and absorption through the skin; this intrusion can disrupt the production, release, and circulation of hormones in the body, resulting in a range of illnesses that affect the reproductive, endocrine, and nervous systems. Consequently, these pollutants pose substantial risks to human health.
View Article and Find Full Text PDFInfluence of prenatal hexachlorobenzene, PCB and selenium levels on growth trajectories in the first year of life: Findings from the NEHO birth cohort.
Environ Int
December 2024
National Research Council of Italy, Institute for Biomedical Research and Innovation, Palermo, Italy.
Prenatal exposure to endocrine-disrupting chemicals (EDCs) may impact postnatal growth trajectories, increasing the risk of various diseases later in life. This issue is of particular concern in industrially contaminated areas, where environmental matrices contain mixtures of pollutants. This study aimed to evaluate the associations between cord serum concentrations of organochlorine pollutants (hexachlorobenzene-HCB and polychlorinated biphenyls-PCBs) and essential elements (EEs), and weight growth trajectories during the first year of life.
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