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Distribution and bioconcentration of semivolatile organic compounds (SVOCs) in soils and vascular plant Colobanthus quitensis from Sub-Antarctic and Antarctic regions.
Sci Total Environ
January 2025
Centro de Genómica, Ecología y Medio Ambiente (GEMA), Universidad Mayor, Campus Huechuraba, Santiago, Chile; Institute of Environment, Florida International University, University Park, Miami, FL 33199, USA; Data Observatory Foundation, Santiago, Chile. Electronic address:
Semi-volatile organic compounds (SVOCs) are widely distributed across the globe, including polar regions. This study investigates the distribution and bioconcentration of organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), and polycyclic aromatic hydrocarbons (PAHs) in soils and Colobanthus quitensis, while also estimating potential emission sources. Results indicated high concentrations of PAHs in soils and plants from the Sub-Antarctic region, while OCPs and PCBs were more prevalent in the Antarctic region, with higher contaminant concentrations found in soils than in plant tissues.
View Article and Find Full Text PDFTemporal development of chlorinated hydrocarbons in the Baltic Sea sediments: Characterization of the pollution maximum.
Sci Total Environ
January 2025
Leibniz Institute for Baltic Sea (IOW), Marine Chemistry Department, Seestraße 15, 18119 Rostock, Germany; IOW, Seestraße 15, 18119 Rostock, Germany. Electronic address:
The Baltic Sea, a semi-enclosed marginal sea with a catchment area four times its size, acts as a sink and continues to show detectable levels of persistent organic pollutants (POPs) in its sediments. This is attributed to the synthesis and industrial use of commercial polychlorinated biphenyls (PCB) products, as well as the widespread use and discharge of certain chlorinated pesticides into the natural environment during the last century. Our study investigates chlorinated hydrocarbon pollutants, the polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane (DDT) and its metabolites as well as hexachlorobenzene (HCB) in sediments based on several short sediment cores from different basins covering almost the entire Baltic Sea.
View Article and Find Full Text PDFPersistent organic pollutants and endogenous sex-related hormones in Hispanic/Latino adults: The Hispanic Community health study/study of Latinos (HCHS/SOL).
Environ Res
December 2024
Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois Chicago, USA.
Background: Previous studies have demonstrated associations of persistent organic pollutants (POPs) with sex-related hormones; however, findings were inconsistent. Sex-specific impacts and pathways through which adiposity influences associations are not completely understood. We sought to evaluate sex-specific associations of POPs serum concentration with sex-related hormones and to explore pathways through which adiposity may modify associations.
View Article and Find Full Text PDFEstrogenic-like compounds severely disturb germ cell formation in Japanese quail.
Biochem Biophys Res Commun
February 2025
Department of Biological Sciences, Faculty of Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan.
During avian germ cell formation, primordial germ cells (PGCs) differentiate into prospermatogonia in testicular seminiferous tubules or into oogonia in the ovarian cortex in late-stage embryos. Although estrogenic endocrine-disrupting chemicals (EDCs) have been suggested to affect the differential fate of avian germ cells, there is currently no established method to examine the effects of EDCs on the differentiation potential of germline cells due to large amount of unidentified proteins present in avian germ cells. Regarding reliable molecular probes for the detection of germ cells that differentiated from the PGCs of Japanese quail, the prospermatogonium and oogonium, respectively, integrin beta1 (ITGB1), insulin-like growth factor 2-binding protein 1 (IGF2BP1), and stimulated by retinoic acid 8 (STRA8) were identified as marker proteins by RNA-seq and liquid chromatography tandem mass spectrometry analyses.
View Article and Find Full Text PDFComputational insights into maternal environmental pollutants and folate pathway regulation.
Reprod Toxicol
December 2024
Department of Genomic Research, Sri Sathya Sai Sanjeevani Research Foundation, Palwal, Haryana 121102, India.. Electronic address:
Exposure to environmental pollutants during pregnancy can adversely affect fetal growth and postnatal development. While numerous studies have explored the interaction between environmental toxic chemicals and the folate pathway, few have examined their inhibitory effects on key targets. This computational study identified 27 maternal environmental toxicants using the Comparative Toxicogenomics Database (CTD) and analyzed them to identify their targets.
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