1 to 10 of 12 literature results

• Lutetium speciation and toxicity in a microbial bioassay: testing the free-ion model for lanthanides.

  The validity of the free-ion model (FIM) for the element lutetium (Lu), a member of the lanthanides, was assessed in experiments with the bacterium Vi…

  Authors: Lennart Weltje, Lars R C W Verhoof, Wilko Verweij, Timo Hamers

  Source: Environmental science & technology. 2004 Dec 15

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• Reproductive stimulation by low doses of xenoestrogens contrasts with the view of hormesis as an adaptive response.

  We discuss the similarities and differences of two types of effects that occur at low but not high doses of chemicals: hormesis and stimulation by oes…

  Authors: Lennart Weltje, Frederick S vom Saal, Jörg Oehlmann

  Source: Human & experimental toxicology. 2005 Sep

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• The chironomid acute toxicity test: development of a new test system.

  This paper describes the basis for a water-only acute chironomid toxicity test guideline using first-instar larvae. The method is based on the OECD te…

  Authors: Lennart Weltje, Hans Rufli, Fred Heimbach, James Wheeler, Marco Vervliet-Scheebaum, Michael Hamer

  Source: Integrated environmental assessment and management. 2010 Apr

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• Endocrine disruption in nematodes: effects and mechanisms.

  This paper reviews the current knowledge on endocrine disruption in nematodes. These organisms have received little attention in the field of ecotoxic…

  Authors: Sebastian Höss, Lennart Weltje

  Source: Ecotoxicology (London, England). 2007 Feb

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• Science based guidance for the assessment of endocrine disrupting properties of chemicals.

  The European legislation on plant protection products (Regulation (EC) No. 1107/2009) and biocides (Directive 98/8/EC), as well as the regulation conc…

  Authors: Remi Bars, Fabrice Broeckaert, Ivana Fegert, Melanie Gross, Nina Hallmark, Tim Kedwards, Dick Lewis, Sue O'Hagan, Grace H Panter, Lennart Weltje,…

  Source: Regulatory toxicology and pharmacology : RTP. 2011 Feb

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• Chironomids: suitable test organisms for risk assessment investigations on the potential endocrine disrupting properties of pesticides.

  Selecting an appropriate invertebrate assay has been a primary goal of national and international testing programs for endocrine disrupting chemicals.…

  Authors: Verena Taenzler, Eric Bruns, Michael Dorgerloh, Verena Pfeifle, Lennart Weltje

  Source: Ecotoxicology (London, England). 2007 Feb

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• Genotoxic damage in field-collected three-spined sticklebacks (Gasterosteus aculeatus L.): a suitable biomonitoring tool?

  Three-spined sticklebacks (Gasterosteus aculeatus L.) were collected during different sampling trails from three locations in Northern Germany, which …

  Authors: Gertraud Wirzinger, Lennart Weltje, Jens Gercken, Holmer Sordyl

  Source: Mutation research. 2007 Mar 30

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• Integrating evolutionary genetics and ecotoxicology: on the correspondence between reaction norms and concentration-response curves.

  Authors: Lennart Weltje

  Source: Ecotoxicology (London, England). 2003 Dec

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• Adsorption of metals to membrane filters in view of their speciation in nutrient solution.

  Filtration of a solution may lower metal concentrations through adsorption of metal species to the filter. Processes such as filter-sterilizing nutrie…

  Authors: Lennart Weltje, Wim Den Hollander, Hubert Th Wolterbeek

  Source: Environmental toxicology and chemistry / SETAC. 2003 Feb

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• Stimulated embryo production as a parameter of estrogenic exposure via sediments in the freshwater mudsnail Potamopyrgus antipodarum.

  The effects of three suspected endocrine disrupting chemicals, the xeno-estrogens bisphenol A (BPA), 4-tert-octylphenol (OP) and 4-n-nonylphenol (NP),…

  Authors: Martina Duft, Ulrike Schulte-Oehlmann, Lennart Weltje, Michaela Tillmann, Jörg Oehlmann

  Source: Aquatic toxicology (Amsterdam, Netherlands). 2003 Sep 10

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