References of "Organohalogen Compounds"
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See detailValidated ready-to-use GC-MS/MS method for dioxin analysis in food and feed following the new EU Regulations
L'Homme, Benjamin ULg; Sandy, Chris; Scholl, Georges ULg et al

in Organohalogen Compounds (in press)

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See detailEVALUATION OF FISH EXPOSURE TO POP-LIKE (ORGANOTIN) COMPOUNDS IN SEPETIBA BAY (RIO DE JANEIRO STATE, BRAZIL) THROUGH HEPATIC TOTAL TIN CONCENTRATIONS
Paiva, TC; Schilithz, PF; Bisi, TL et al

in Organohalogen Compounds (2016, August)

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See detailThe effects of triclosan exposure in shape changes of sheepshead minnow (Cyprinodon variegatus) during early development and metamorphosis
Schnitzler, Joseph ULg; Frederich, Bruno ULg; Dussenne, Mélanie ULg et al

in Organohalogen Compounds (2015, August)

Thyroid hormones are essential for normal development, and for maintenance of normal physiological functions in vertebrates [1, 2]. In fish, thyroid hormones are involved in the control of osmoregulation ... [more ▼]

Thyroid hormones are essential for normal development, and for maintenance of normal physiological functions in vertebrates [1, 2]. In fish, thyroid hormones are involved in the control of osmoregulation, metabolism, somatic growth and post-hatching metamorphosis [1, 3, 4]. The regulation of thyroid hormone bioavailability in tissues and cells represents a very complex and unique web of feedback systems [2]. In fish and other vertebrates the thyroid cascade involves two components. First, thyroxine (T4) biosynthesis and secretion are largely under central control by the brain–pituitary–thyroid axis [5]. Second, there is the conversion of T4 to its biologically active form 3,5,3-triiodothyronine (T3) and its metabolism and receptor-mediated actions that seems largely to be under peripheral control in extra-thyroidal tissues [6]. The accumulation in the aquatic environment of anthropogenic chemicals, among which are endocrine disrupting chemicals (EDCs) that alter normal hormonal regulation, is having dramatic consequences for humans and wildlife. Numerous chemicals disrupt thyroid homeostasis affecting thyroid hormone (TH) synthesis and transport, and cellular uptake and metabolism [7, 8]. Triclosan (TCS) is a synthetic chlorinated phenolic compound with a generalized use as an antimicrobial and preservative in many personal care and household products [9-11]. As a result of disposal of TCS through sewage systems and insufficient/variable removal by wastewater treatment plants (WWTP) [9], widespread contamination with TCS has been detected in several countries, particularly in aquatic ecosystems, WWTP influents and effluents; sludges and biosolids; surface or ground water; drinking water; and aquatic sediments [9-11]. TCS and its metabolites have been detected in tissues and body fluids of aquatic organisms including fish, revealing they are accumulating in the food chain [9-11] and TCS has also been detected in human blood, breast milk and urine [9-11]. The structural similarity of TCS with THs [9] suggest it may have adverse effects on the thyroid system. However, little is known about the mechanisms by which TCS disrupts the thyroid axis. TCS effects on fish thyroid axis have not been investigated. It is possible, that the TCS toxic effects reported in fish embryos, larvae and adults [9-11] might be caused, at least in part, through its effect on the thyroid system. We determined how TCS affect ontogenic variations of thyroid hormones in developing sheepshead minnow larvae. Knowing that thyroid hormones are involved in somatic growth and post-hatching metamorphosis, we also tested the hypothesis that TCS alter the development of these larvae. To do this, we used landmark-based geometric morphometric methods. These methods allowed us to analyse the pure shape variations of our developing larvae, regardless orientation, position, and size. [less ▲]

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See detailIsolation and identification of anthropogenic particles in fish stomachs by Raman spectroscopy: a new method
Collard, France ULg; Gilbert, Bernard ULg; Eppe, Gauthier ULg et al

in Organohalogen Compounds (2015, August)

Microplastic particles (MP) contaminate oceans and affect marine organisms in several ways. Ingestion combined with food intake is generally reported. However, data interpretation is often circumvented by ... [more ▼]

Microplastic particles (MP) contaminate oceans and affect marine organisms in several ways. Ingestion combined with food intake is generally reported. However, data interpretation is often circumvented by the difficulty to separate MP from bulk samples. Visual examination is often used as one or the only step to sort these particles. However, color, size and shape are insufficient and often unreliable criteria. Here we present an isolation method of MP specially adapted to a subsequent analysis by Raman spectroscopy. This method avoids fluorescence problems allowing the identification anthropogenic particles (AP) from stomach contents of fish by Raman spectroscopy. It was validated with commercial samples of microplastics and cotton along with stomach contents from three different Clupeiformes fishes: Clupea harengus, Sardina pilchardus and Engraulis encrasicolus. The optimized digestion and isolation protocol showed no visible impact on microplastics and cotton particles while the spectroscopic analysis allowed precise identification of microplastics and textile fibers. This approach allowed us to isolate 35 particles. These were analyzed by Raman spectroscopy: eleven were microplastics and thirteen were made of cellulose or lignin, or both (mostly fibers). Some particles were not identified but contained artificial colorants. This isolation protocol will help to assess the presence, quantity and composition of AP in planktivorous fish stomachs. [less ▲]

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See detailOptimization of a new dioxin/PCB clean-up and fractionation procedure for an existing automated system
Calaprice, Chiara ULg; L'Homme, Benjamin; Calvano, Cosima Damiana et al

in Organohalogen Compounds (2015)

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See detailMeasurement uncertainty for persistent organic pollutants by isotope dilution mass spectrometry
Eppe, Gauthier ULg; Diletti, G; Fernandes, A et al

in Organohalogen Compounds (2014, September), 76

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See detailIn vitro study toward the endocrine activity and the genotoxic potential of migration products from plastic baby bottles
Simon, Coraline ULg; Onghena, M.; Covaci, A. et al

in Organohalogen Compounds (2014), 76

Bisphenol A (BPA) is documented in several studies to be a well-known source of food contamination. Recently, the European Union took a series of measures, including a ban for the import and sale of ... [more ▼]

Bisphenol A (BPA) is documented in several studies to be a well-known source of food contamination. Recently, the European Union took a series of measures, including a ban for the import and sale of polycarbonate (PC) baby bottles to reduce BPA exposure of infants. Plastic alternatives to PC, which have massively appeared on the Belgian market, include polypropylene (PP), silicone, polyamide (PA) and polyethersulfone (PES). In a recent opinion (No. 8697, 11.03.2010), the Belgian Superior Health Council issued its concern regarding the alternatives to PC currently used. Furthermore, they asked to investigate the possible risks associated with the use of these alternatives. In this study, a screening towards the endocrine activity of chemicals migrating from PC alternatives, identified by the group of Simoneau, was performed by using different reporter gene assays. Furthermore, the genotoxic potential of these compounds was also assessed with the Vitotox assay, an indicator test for DNA damage. The aim of the screening was to select the substances that may present a risk for human health and thus require further characterization. [less ▲]

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See detailUSING TOP PREDATORS AND DR-CALUX TO SCREEN COASTAL ENVIRONMENTS FROM THREE DIFFERENT BRAZILIAN REGIONS FOR DIOXINS AND RELATED COMPOUNDS
Dorneles; Lailson-Brito; Bisi et al

in Organohalogen Compounds (2014), 76

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See detailMeasurement of trace level Dechlorane flame retardants in food and feed by GC-MS/MS
Calaprice, Chiara ULg; L'Homme, Benjamin; Brasseur, Catherine et al

in Organohalogen Compounds (2014), 76

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See detailTime-Controlled Cryogenic Zone Compression (tCZC) GC-HRMS, A Novel Tool fro Targetted Analysis at Uktra Trace Level
Krumwiede, D; Mehmlann, H; Focant, Jean-François ULg et al

in Organohalogen Compounds (2013), 75

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See detailLevels of Dechloranes and PBDEs in Serum from Central European Population
Brasseur, Catherine ULg; Focant, Jean-François ULg

in Organohalogen Compounds (2013), 75

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See detailMeasurement of human levels of Dechlorane 602 by CZC-NCI-HRTOFMS
Brasseur, Catherine ULg; PIRARD, Catherine ULg; L'Homme, Benjamin ULg et al

in Organohalogen Compounds (2012, August), 74

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See detailAnalytical criteria for use of MS/MS for determination of dioxins and dioxin-like PCBs in feed and food
Kotz, A; Malisch, R; Focant, Jean-François ULg et al

in Organohalogen Compounds (2012, August), 74

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See detailFrom Food Crisis to Analytical Strategies
Focant, Jean-François ULg

in Organohalogen Compounds (2012), 74

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See detailMeasurement of PCB-153 and DDE in 20 μL dried-blood spots
L'Homme, Benjamin ULg; Focant, Jean-François ULg

in Organohalogen Compounds (2012), 74

Detailed reference viewed: 28 (6 ULg)