Results 151 to 160 of about 4,562,435 (189)

Dioxin and Dioxin-like Polychlorinated Hydrocarbons and Biphenyls

1999
Publisher Summary This chapter reveals that the prominent members of the class of polychlorinated hydrocarbons are characterized by the molecular structure of dibenzo-p-dioxin, dibenzofuran, and biphenyl, with different chlorine substitution patterns at the aromatic rings.
Günter Koss, Detlef Wölfle
openaire   +1 more source

Human CYP1B1-dependent genotoxicity of dioxin-like polychlorinated biphenyls in mammalian cells

Toxicology, 2020
Polychlorinated biphenyls (PCBs) are persistent organic pollutants and human carcinogens. It was reported that rat CYP1A1 and catfish CYP1A can hydroxylate 3,3',4,4',5-pentachlorobiphenyl (PCB 126) and 3,3',4,4'-tetrachlorobiphenyl (PCB 77), while potential roles of other CYP1 enzymes in the metabolism of dioxin-like (DL) PCBs remain unconfirmed.
Yuting Chen, Yifan Wu, Weiwei Xiao, Hansi Jia, Hansruedi Glatt, Ming Shi, Yungang Liu   +6 more
openaire   +2 more sources

UNCERTAINTY ANALYSIS OF DIOXIN-LIKE POLYCHLORINATED BIPHENYLS RELATED TOXIC EQUIVALENTS IN FISH

Environmental Toxicology and Chemistry, 2007
Abstract The toxic equivalent (TEQ) concept is widely used to assess toxicity potential of a dioxin-like chemical mixture. The TEQ approach converts concentrations of various dioxin-like compounds into a single concentration that is toxicologically equivalent to the most toxic dioxin compound, 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-
Satyendra P, Bhavsar, Alan, Hayton, Donald A, Jackson   +2 more
openaire   +2 more sources

Dietary intakes of polychlorinated dibenzo-p-dioxins, dibenzofurans and dioxin-like polychlorinated biphenyls in Spain

Food Additives and Contaminants, 2004
Congener-specific analyses of seventeen 2,3,7,8-substituted PCDD/Fs, three non-ortho and 8 mono-ortho dioxin-like polychlorinated biphenyls (PCBs) were performed on 258 Spanish foodstuff samples, mainly of animal origin, for 2000--03. Daily dietary intakes of PCDD/Fs and PCBs, expressed as toxic equivalents (WHO-TEQs), were estimated by combining food ...
Fernández Martín, Mario Antonio, Gómara, Belén, Bordajandi, Luisa R., Herrero, Laura, Abad Holgado, Esteban, Ábalos, Manuela, Rivera, Josep, González Carlos, María José   +7 more
openaire   +3 more sources

Biological monitoring of indoor-exposure to dioxin-like and non-dioxin-like polychlorinated biphenyls (PCB) in a public building

Toxicology Letters, 2012
The release of PCBs from sealant material in public buildings and the resulting indoor air levels have raised growing concerns about possible human health effects connected with this exposure. Ambient monitoring of PCBs in a public building has revealed a contamination with the more volatile lower chlorinated PCB 28, PCB 52 and PCB 101.
Thomas, Schettgen, A, Alt, D, Preim, D, Keller, T, Kraus   +4 more
openaire   +2 more sources

Insight into the neuroproteomics effects of the food-contaminant non-dioxin like polychlorinated biphenyls

Journal of Proteomics, 2012
Recent studies showed that food-contaminant non-dioxin-like polychlorinated biphenyls (NDL-PCBs) congeners (PCB52, PCB138, PCB180) have neurotoxic potential, but the cellular and molecular mechanisms underlying neuronal damage are not entirely known.
Brunelli, L, LLansola, M, Felipo, V, Campagna, R, Airoldi, L, De Paola, M, Fanelli, R, Mariani, A, Mazzoletti, M, Pastorelli, R   +9 more
openaire   +3 more sources

Polychlorinated Dibenzo- p -Dioxins, Dibenzofurans, and Dioxin-Like Polychlorinated Biphenyls in Livers of Birds from Japan

Archives of Environmental Contamination and Toxicology, 2002
Concentrations of 2,3,7,8-substituted polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and non- and mono-ortho-chlorine-substituted polychlorinated biphenyls (dioxin-like PCBs) were measured in livers of 17 species of birds collected from Japan.
K, Senthilkumar, N, Iseki, S, Hayama, J, Nakanishi, S, Masunaga   +4 more
openaire   +2 more sources

Atmospheric deposition of polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans, and dioxin-like polychlorinated biphenyls in the Kanto Region, Japan

Chemosphere, 2001
The atmospheric bulk (dry and wet) deposition of dioxins was investigated at four locations (Tokyo, Yokohama, Tsukuba, and Tanzawa) in the Kanto region (in Japan) over one year using a stainless-steel pot. Annual average polychlorinated dibenzo-p-dioxins/polychlorinated dibenzofurans (PCDD/PCDF) deposition fluxes were estimated to be from 450 to 1300 ...
I, Ogura, S, Masunaga, J, Nakanishi
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Comparing dioxin-like polychlorinated biphenyls in most consumed fish species of the Caspian Sea

Environmental Research, 2020
Among polychlorinated biphenyls (PCBs), dioxin-like PCBs (DL-PCBs) are of the most concern for human health. In this study, the levels of 12 DL-PCBs congeners were measured in 125 fish samples of the Caspian Sea, Iran. Five fish species (Oncorhynchus mykiss, Vimba vimba, Cyprinus carpio, Rutilus frisii kutum and Chelon saliens) were collected from 5 ...
Ebadi Fathabad A, Jafari K, Tajik H, Behmanesh M, Shariatifar N, Mirahmadi SS, Oliveri Conti G, Miri M.   +7 more
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Risk assessments of polychlorinated dibenzo‐ p‐dioxins, polychlorinated dibenzofurans, and dioxin‐like polychlorinated biphenyls in food

Molecular Nutrition & Food Research, 2006
AbstractThe polychlorinated dibenzo‐p‐dioxins (PCDD), polychlorinated dibenzofurans (PCDF), and dioxin‐like polychlorinated biphenyls (dioxin‐like PCB) are ubiquitous in food of animal origin and accumulate in fatty tissues of animals and humans. The most toxic congener is 2,3,7,8‐tetrachlorodibenzo‐p‐dioxin (TCDD).
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