Maternal transfer of emerging brominated and chlorinated flame retardants in European eels

Sühring, Roxana; Freese, Marko; Schneider, Mandy; Schubert, Sophia; Pohlmann, Jan Dag; Alaee, Mehran; Wolschke, Hendrik; Hanel, Reinhold; Ebinghaus, Ralf; Marohn, Lasse

doi:10.1016/j.scitotenv.2015.05.094

Cited by 37 publications

(28 citation statements)

References 20 publications

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“…That significant correlation indicated that lipid might play a crucial role in tissue distribution of DP and its analogues. This result was consistent with the tissue distribution of DP in chicken , in Chinese sturgeons (Peng et al, 2012) and in European eels (Suhring et al, 2015).…”

Section: Characteristics Of Tissue Distributionsupporting

confidence: 90%

Maternal transfer of dechloranes and their distribution among tissues in contaminated ducks

et al. 2016

Chemosphere

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h i g h l i g h t sRelatively serious contamination of DP was found in the e-waste recycling sites, Taizhou. Lipid pool, liver sequestration and blood-barrier affect tissue distribution of DP and its analogues. The maternal transfer extent of Dec 602 was over one. The stereo-selective accumulation of DP occurs among duck tissues. The monodechlorinated products in duck likely originated from the exterior environment. a r t i c l e i n f o t r a c tThe tissue concentrations of dechlorane plus and its analogues were determined in ducks collected from several e-waste recycling villages of Taizhou, China. Compared with the published literature, the relatively high concentrations of these compounds were detected in ducks, indicating serious DP contamination. Since both the duck meat and eggs were important components for diet, this result reminded us of keeping a watchful eye on human dietary exposure to DP and its analogues in this study area. The wetweight concentrations of DP and its analogues were significantly related to tissue lipid content (p < 0.05), indicating that the lipid pools predominantly impacted the distribution of DPs in ducks. On the basis of lipid adjustment, the significantly lower levels in brain than those in liver and blood, displayed the occurrence of liver sequestration and bloodebrain barrier to DP and its analogues in the duck (p < 0.05). The maternal transfer of DP and Mirex was not obviously limited, and the transferring extent of Dec 602 was over one. The stereo-selected accumulation of two DP isomers occurred among tissues with preference to syn-DP in blood, and to anti-DP in brain. The values of lipid-adjusted monodechlorinated products mainly originated from the exterior environment in ducks.

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Section: Characteristics Of Tissue Distributionsupporting

confidence: 90%

Maternal transfer of dechloranes and their distribution among tissues in contaminated ducks

et al. 2016

Chemosphere

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“…The North Atlantic eel populations have experienced a large and persistent decline in recruitment since the mid-1980s (Castonguay et al 1994;Dekker et al 2003). The causes are largely unknown: among the suggestions are anthropogenic factors such as loss of continental habitat, overexploitation or an increased burden of parasites and contaminants (Haro et al 2000;van Ginneken et al 2009;Kettle et al 2011;Freese et al 2016;Sühring et al 2015 and. Oceanic factors may also impact the larval transport (Friedland et al 2007;Miller et al 2009) as well as primary production and food availability in the larval habitat (Knights 2003; Bonhommeau et al…”

Section: R a F T Introductionmentioning

confidence: 99%

Modeling the drift of European (Anguilla anguilla) and American (Anguilla rostrata) eel larvae during the year of spawning

Westerberg

Pacariz

Marohn³

et al. 2018

Can. J. Fish. Aquat. Sci.

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The distribution of the leptocephalus larvae of European (Anguilla anguilla) and American (Anguilla rostrata) eels collected during recent Sargasso Sea surveys was used to model larval drift. The drift trajectories of individual larva were back-calculated to the estimated time of spawning, using current data from two global oceanographic assimilation models. The results of both models give the same overall result; widespread spawning extended in time from December to March. The drift was also calculated forwards for approximately 1 year. The forward drift modelling showed that most leptocephali remained in the area south of the Subtropical Frontal Zone. One conclusion is that the majority of leptocephali remain trapped and possibly die in the retention area. A small proportion of leptocephali are entrained into the Gulf Stream system. An implication is that the spawning success may be highly sensitive to oceanographic and climatic factors that alter the dispersion of leptocephali out from the retention area. An alternative interpretation is that the surveys were made too late after the peak spawning period and that the core spawning area was missed.

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“…As one of the most predominant brominated flame retardants (BFRs), tetrabromobisphenol A (TBBPA) has been applied widely in various plastic products, electronics and textiles (de Wit, 2002; Voordeckers et al, 2002; Morf et al, 2005). It was frequently found in air, house dust, water, soil and sediments, human and animal tissues (Sellström and Jansson,1995; Johnson-Restrepo et al, 2008; Fan et al, 2013; Lee et al, 2015; Sühring et al, 2015; Li et al, 2016). TBBPA and its derivatives are regarded as potential endocrine disruptors due to the similar molecular structures to thyroid hormones (Ren and Guo, 2013).…”

Section: Introductionmentioning

confidence: 99%

Biotransformation of tetrabromobisphenol A dimethyl ether back to tetrabromobisphenol A in whole pumpkin plants

Hou

Liu

et al. 2018

Environmental Pollution

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As the metabolites of tetrabromobisphenol A (TBBPA), tetrabromobisphenol A mono- and di-methyl ethers (TBBPA MME and TBBPA DME) have been detected in various environmental media. However, knowledge of the contribution of plants to their environmental fates, especially to the interactions between TBBPA DME and TBBPA, is quite limited. In this study, the metabolism and behaviors of TBBPA DME was studied with pumpkin plants through 15-day hydroponic exposure. The TBBPA were also studied separately using in-lab hydroponic exposure for comparison. The results showed that more TBBPA DME accumulated in pumpkin roots and translocated up to stems and leaves compared with TBBPA. Transformation of TBBPA DME occurred later and more slowly than that of TBBPA. Interconversion between TBBPA DME and TBBPA was verified in intact plants for the first time. Namely, TBBPA DME can be biotransformed to TBBPA MME (transformation ratio in mole mass, TRMM 0.50%) and to TBBPA (TRMM 0.53%) within pumpkin; and TBBPA can be biotransformed to TBBPA MME (TRMM 0.58%) and to TBBPA DME (TRMM 0.62%). In addition, two single benzene-ring metabolites, 2,6-dibromo-4-(2-(2-hydroxyl)-propyl)-anisole (DBHPA, TRMM 3.4%) with an O-methyl group and 2,6-dibromo-4-(2-(2-hydroxyl)-propyl)-phenetole (DBHPP, TRMM 0.57%) with an O-ethyl group, were identified as the transformation products in the TBBPA exposure experiments. The transformation and interconversion from TBBPA DME back to TBBPA is reported as a new pathway and potential source for TBBPA in the environment.

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Maternal transfer of emerging brominated and chlorinated flame retardants in European eels

Cited by 37 publications

References 20 publications

Maternal transfer of dechloranes and their distribution among tissues in contaminated ducks

Maternal transfer of dechloranes and their distribution among tissues in contaminated ducks

Modeling the drift of European (Anguilla anguilla) and American (Anguilla rostrata) eel larvae during the year of spawning

Biotransformation of tetrabromobisphenol A dimethyl ether back to tetrabromobisphenol A in whole pumpkin plants

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