924 results on '"Schrenk, Dieter"'
Search Results
2. Potency ranking of pyrrolizidine alkaloids in metabolically competent human liver cancer cells and primary human hepatocytes using a genotoxicity test battery
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Haas, Manuel, Wirachowski, Karina, Thibol, Lea, Küpper, Jan-Heiner, Schrenk, Dieter, and Fahrer, Jörg
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- 2023
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3. Toxicodynamic Tests
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Cartus, Alexander, Schrenk, Dieter, Reichl, Franz-Xaver, editor, and Schwenk, Michael, editor
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- 2021
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4. Suppression of apoptotic signaling in rat hepatocytes by non-dioxin-like polychlorinated biphenyls depends on the receptors CAR and PXR
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Gährs, Maike and Schrenk, Dieter
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- 2021
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5. A Benchmark analysis of acrylamide-derived DNA adducts in rat hepatocytes in culture measured by a new, highly sensitive method
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Hemgesberg, Melanie, Stegmüller, Simone, Cartus, Alexander, and Schrenk, Dieter
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- 2021
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6. Endocrine, metabolic and apical effects of in utero and lactational exposure to non-dioxin-like 2,2′,3,4,4′,5,5′-heptachlorobiphenyl (PCB 180): A postnatal follow-up study in rats
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Alarcón, Sonia, Esteban, Javier, Roos, Robert, Heikkinen, Päivi, Sánchez-Pérez, Ismael, Adamsson, Annika, Toppari, Jorma, Koskela, Antti, Finnilä, Mikko A.J., Tuukkanen, Juha, Herlin, Maria, Hamscher, Gerd, Leslie, Heather A., Korkalainen, Merja, Halldin, Krister, Schrenk, Dieter, Håkansson, Helen, and Viluksela, Matti
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- 2021
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7. The 2022 world health organization reevaluation of human and mammalian toxic equivalency factors for polychlorinated dioxins, dibenzofurans and biphenyls
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IRAS OH Toxicology, IRAS – One Health Toxicology, DeVito, Michael, Bokkers, Bas, van Duursen, Majorie B M, van Ede, Karin, Feeley, Mark, Antunes Fernandes Gáspár, Elsa, Haws, Laurie, Kennedy, Sean, Peterson, Richard E, Hoogenboom, Ron, Nohara, Keiko, Petersen, Kim, Rider, Cynthia, Rose, Martin, Safe, Stephen, Schrenk, Dieter, Wheeler, Matthew W, Wikoff, Daniele S, Zhao, Bin, van den Berg, Martin, IRAS OH Toxicology, IRAS – One Health Toxicology, DeVito, Michael, Bokkers, Bas, van Duursen, Majorie B M, van Ede, Karin, Feeley, Mark, Antunes Fernandes Gáspár, Elsa, Haws, Laurie, Kennedy, Sean, Peterson, Richard E, Hoogenboom, Ron, Nohara, Keiko, Petersen, Kim, Rider, Cynthia, Rose, Martin, Safe, Stephen, Schrenk, Dieter, Wheeler, Matthew W, Wikoff, Daniele S, Zhao, Bin, and van den Berg, Martin
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- 2024
8. Estragole: DNA adduct formation in primary rat hepatocytes and genotoxic potential in HepG2-CYP1A2 cells
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Schulte-Hubbert, Ruth, Küpper, Jan-Heiner, Thomas, Adam D., and Schrenk, Dieter
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- 2020
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9. Update of the scientific opinion on tetrabromobisphenol A (TBBPA) and its derivatives in food.
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Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Chipman, James Kevin, del Mazo, Jesús, Grasl‐Kraupp, Bettina, Hogstrand, Christer, Hoogenboom, Laurentius, Leblanc, Jean‐Charles, Nebbia, Carlo Stefano, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Wallace, Heather, Benford, Diane, Hart, Andy, Schroeder, Henri, and Rose, Martin
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DAIRY products , *RISK assessment , *CARCINOGENICITY , *BODY weight , *NEUROTOXICOLOGY - Abstract
The European Commission asked EFSA to update its 2011 risk assessment on tetrabromobisphenol A (TBBPA) and five derivatives in food. Neurotoxicity and carcinogenicity were considered as the critical effects of TBBPA in rodent studies. The available evidence indicates that the carcinogenicity of TBBPA occurs via non‐genotoxic mechanisms. Taking into account the new data, the CONTAM Panel considered it appropriate to set a tolerable daily intake (TDI). Based on decreased interest in social interaction in male mice, a lowest observed adverse effect level (LOAEL) of 0.2 mg/kg body weight (bw) per day was identified and selected as the reference point for the risk characterisation. Applying the default uncertainty factor of 100 for inter‐ and intraspecies variability, and a factor of 3 to extrapolate from the LOAEL to NOAEL, a TDI for TBBPA of 0.7 μg/kg bw per day was established. Around 2100 analytical results for TBBPA in food were used to estimate dietary exposure for the European population. The most important contributors to the chronic dietary LB exposure to TBBPA were fish and seafood, meat and meat products and milk and dairy products. The exposure estimates to TBBPA were all below the TDI, including those estimated for breastfed and formula‐fed infants. Accounting for the uncertainties affecting the assessment, the CONTAM Panel concluded with 90%–95% certainty that the current dietary exposure to TBBPA does not raise a health concern for any of the population groups considered. There were insufficient data on the toxicity of any of the TBBPA derivatives to derive reference points, or to allow a comparison with TBBPA that would support assignment to an assessment group for the purposes of combined risk assessment. [ABSTRACT FROM AUTHOR]
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- 2024
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10. Risk assessment of small organoarsenic species in food.
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Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Chipman, James Kevin, del Mazo, Jesús, Grasl‐Kraupp, Bettina, Hogstrand, Christer, Hoogenboom, Laurentius, Leblanc, Jean‐Charles, Nebbia, Carlo Stefano, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Vleminckx, Christiane, Wallace, Heather, Barregård, Lars, Benford, Diane, Dogliotti, Eugenia, and Francesconi, Kevin
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CACODYLIC acid , *BLADDER , *AGE groups , *NUTRITION surveys , *FISHERY processing - Abstract
The European Commission asked EFSA for a risk assessment on small organoarsenic species in food. For monomethylarsonic acid MMA(V), decreased body weight resulting from diarrhoea in rats was identified as the critical endpoint and a BMDL10 of 18.2 mg MMA(V)/kg body weight (bw) per day (equivalent to 9.7 mg As/kg bw per day) was calculated as a reference point (RP). For dimethylarsinic acid DMA(V), increased incidence in urinary bladder tumours in rats was identified as the critical endpoint. A BMDL10 of 1.1 mg DMA(V)/kg bw per day (equivalent to 0.6 mg As/kg bw per day) was calculated as an RP. For other small organoarsenic species, the toxicological data are insufficient to identify critical effects and RPs, and they could not be included in the risk assessment. For both MMA(V) and DMA(V), the toxicological database is incomplete and a margin of exposure (MOE) approach was applied for risk characterisation. The highest chronic dietary exposure to DMA(V) was estimated in 'Toddlers', with rice and fish meat as the main contributors across population groups. For MMA(V), the highest chronic dietary exposures were estimated for high consumers of fish meat and processed/preserved fish in 'Infants' and 'Elderly' age class, respectively. For MMA(V), an MOE of ≥ 500 was identified not to raise a health concern. For MMA(V), all MOEs were well above 500 for average and high consumers and thus do not raise a health concern. For DMA(V), an MOE of 10,000 was identified as of low health concern as it is genotoxic and carcinogenic, although the mechanisms of genotoxicity and its role in carcinogenicity of DMA(V) are not fully elucidated. For DMA(V), MOEs were below 10,000 in many cases across dietary surveys and age groups, in particular for some 95th percentile exposures. The Panel considers that this would raise a health concern. [ABSTRACT FROM AUTHOR]
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- 2024
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11. Scientific Committee guidance on appraising and integrating evidence from epidemiological studies for use in EFSA's scientific assessments.
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More, Simon, Bampidis, Vasileios, Benford, Diane, Bragard, Claude, Hernandez‐Jerez, Antonio, Bennekou, Susanne Hougaard, Koutsoumanis, Konstantinos, Lambré, Claude, Machera, Kyriaki, Mullins, Ewen, Nielsen, Soren Saxmose, Schlatter, Josef, Schrenk, Dieter, Turck, Dominique, Younes, Maged, Fletcher, Tony, Greiner, Matthias, Ntzani, Evangelia, Pearce, Neil, and Vinceti, Marco
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RISK assessment ,INFERENTIAL statistics ,SCIENTIFIC observation ,HUMAN experimentation ,COMMITTEES - Abstract
EFSA requested its Scientific Committee to prepare a guidance document on appraising and integrating evidence from epidemiological studies for use in EFSA's scientific assessments. The guidance document provides an introduction to epidemiological studies and illustrates the typical biases, which may be present in different epidemiological study designs. It then describes key epidemiological concepts relevant for evidence appraisal. This includes brief explanations for measures of association, exposure assessment, statistical inference, systematic error and effect modification. The guidance then describes the concept of external validity and the principles of appraising epidemiological studies. The customisation of the study appraisal process is explained including tailoring of tools for assessing the risk of bias (RoB). Several examples of appraising experimental and observational studies using a RoB tool are annexed to the document to illustrate the application of the approach. The latter part of this guidance focuses on different steps of evidence integration, first within and then across different streams of evidence. With respect to risk characterisation, the guidance considers how evidence from human epidemiological studies can be used in dose–response modelling with several different options being presented. Finally, the guidance addresses the application of uncertainty factors in risk characterisation when using evidence from human epidemiological studies. [ABSTRACT FROM AUTHOR]
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- 2024
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12. Guidance on risk–benefit assessment of foods.
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More, Simon John, Benford, Diane, Hougaard Bennekou, Susanne, Bampidis, Vasileios, Bragard, Claude, Halldorsson, Thorhallur Ingi, Hernández‐Jerez, Antonio F., Koutsoumanis, Kostas, Lambré, Claude, Machera, Kyriaki, Mullins, Ewen, Nielsen, Søren Saxmose, Schlatter, Josef, Schrenk, Dieter, Turck, Dominique, Naska, Androniki, Poulsen, Morten, Ranta, Jukka, Sand, Salomon, and Wallace, Heather
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CONSUMER behavior ,FOOD safety ,ADVICE ,PROBABILITY theory ,HAZARDS - Abstract
The EFSA Scientific Committee has updated its 2010 Guidance on risk–benefit assessment (RBA) of foods. The update addresses methodological developments and regulatory needs. While it retains the stepwise RBA approach, it provides additional methods for complex assessments, such as multiple chemical hazards and all relevant health effects impacting different population subgroups. The updated guidance includes approaches for systematic identification, prioritisation and selection of hazardous and beneficial food components. It also offers updates relevant to characterising adverse and beneficial effects, such as measures of effect size and dose–response modelling. The guidance expands options for characterising risks and benefits, incorporating variability, uncertainty, severity categorisation and ranking of different (beneficial or adverse) effects. The impact of different types of health effects is assessed qualitatively or quantitatively, depending on the problem formulation, scope of the RBA question and data availability. The integration of risks and benefits often involves value‐based judgements and should ideally be performed with the risk–benefit manager. Metrics such as Disability‐Adjusted Life Years (DALYs) and Quality‐Adjusted Life Years (QALYs) can be used. Additional approaches are presented, such as probability of all relevant effects and/or effects of given severities and their integration using severity weight functions. The update includes practical guidance on reporting results, interpreting outcomes and communicating the outcome of an RBA, considering consumer perspectives and responses to advice. [ABSTRACT FROM AUTHOR]
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- 2024
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13. Pyrrolizidine alkaloids in food and phytomedicine: Occurrence, exposure, toxicity, mechanisms, and risk assessment - A review
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Schrenk, Dieter, Gao, Lan, Lin, Ge, Mahony, Catherine, Mulder, Patrick P.J., Peijnenburg, Ad, Pfuhler, Stefan, Rietjens, Ivonne M.C.M., Rutz, Lukas, Steinhoff, Barbara, and These, Anja
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- 2020
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14. Toxins in Botanical Drugs and Plant-derived Food and Feed – from Science to Regulation: A Workshop Review
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Schrenk, Dieter, additional, Allemang, Ashley, additional, Fahrer, Jörg, additional, Harms, Henrik, additional, Li, Xilin, additional, Lin, Ge, additional, Mahony, Catherine, additional, Mulder, Patrick, additional, Peijnenburg, Ad, additional, Pfuhler, Stefan, additional, Punt, Ans, additional, Sievers, Hartwig, additional, Troutman, John, additional, and Widjaja, Frances, additional
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- 2024
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15. The 2022 world health organization reevaluation of human and mammalian toxic equivalency factors for polychlorinated dioxins, dibenzofurans and biphenyls
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DeVito, Michael, primary, Bokkers, Bas, additional, van Duursen, Majorie B.M., additional, van Ede, Karin, additional, Feeley, Mark, additional, Antunes Fernandes Gáspár, Elsa, additional, Haws, Laurie, additional, Kennedy, Sean, additional, Peterson, Richard E., additional, Hoogenboom, Ron, additional, Nohara, Keiko, additional, Petersen, Kim, additional, Rider, Cynthia, additional, Rose, Martin, additional, Safe, Stephen, additional, Schrenk, Dieter, additional, Wheeler, Matthew W., additional, Wikoff, Daniele S., additional, Zhao, Bin, additional, and van den Berg, Martin, additional
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- 2024
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16. Lebensmitteltoxikologie
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Fürst, Peter, primary, Grob, Konrad, additional, Hartwig, Andrea, additional, Jahnke, Gunnar, additional, Metzler, Manfred, additional, Klein, Günter, additional, Lampen, Alfonso, additional, Marko, Doris, additional, Matissek, Reinhard, additional, Päpke, Olaf, additional, Schrenk, Dieter, additional, Seidel, Albrecht, additional, Stahl, Thorsten, additional, Teufer, Tobias, additional, Weißhaar, Rüdiger, additional, rer. nat. Falk, Sandy, additional, Hiller, Petra, additional, Seeger, Bettina, additional, and Kietzmann, Manfred, additional
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- 2023
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17. Structure-dependent genotoxic potencies of selected pyrrolizidine alkaloids in metabolically competent HepG2 cells
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Rutz, Lukas, Gao, Lan, Küpper, Jan-Heiner, and Schrenk, Dieter
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- 2020
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18. In vitro biotransformation of pyrrolizidine alkaloids in different species: part II—identification and quantitative assessment of the metabolite profile of six structurally different pyrrolizidine alkaloids
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Geburek, Ina, Schrenk, Dieter, and These, Anja
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- 2020
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19. Update of the risk assessment of mineral oil hydrocarbons in food
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European Food Safety Authority, Schrenk, Dieter [0000-0002-7717-5533], Bignami, Margherita [0000-0002-1525-6864], Bodin, Laurent [0000-0001-5671-3139], Del Mazo, Jesús [0000-0003-3269-3895], Grasl-Kraupp, Bettina [0000-0003-4889-6531], Hogstrand, Christer [0000-0001-7545-6975], Hoogenboom, Laurentius (Ron) [0000-0002-8913-5328], Leblanc, Jean-Charles [0000-0003-2872-3414], Nielsen, Elsa [0000-0002-6874-2575], Ntzani, Evangelia [0000-0003-3712-4181], Petersen, Annette [0000-0003-3996-2701], Sand, Salomon [0000-0002-3360-0534], Schwerdtle, Tanja [0000-0002-4873-7488], Vleminckx, Christiane [0000-0002-9928-1601], Goldbeck, Christophe [0000-0003-1539-464X], Gómez-Ruiz, José Ángel [0000-0001-9386-6185], EFSA CONTAM Panel, Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Del Mazo, Jesús, Grasl-Kraupp, Bettina, Hogstrand, Christer, Hoogenboom, Laurentius (Ron), Leblanc, Jean-Charles, Nebbia, Carlo Stefano, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Alexander, Jan, Goldbeck, Christophe, Grob, Konrad, Gómez-Ruiz, José Ángel, Mosbach-Schulz, Olaf, Binaglia, Marco, Chipman, James Kevin, European Food Safety Authority, Schrenk, Dieter [0000-0002-7717-5533], Bignami, Margherita [0000-0002-1525-6864], Bodin, Laurent [0000-0001-5671-3139], Del Mazo, Jesús [0000-0003-3269-3895], Grasl-Kraupp, Bettina [0000-0003-4889-6531], Hogstrand, Christer [0000-0001-7545-6975], Hoogenboom, Laurentius (Ron) [0000-0002-8913-5328], Leblanc, Jean-Charles [0000-0003-2872-3414], Nielsen, Elsa [0000-0002-6874-2575], Ntzani, Evangelia [0000-0003-3712-4181], Petersen, Annette [0000-0003-3996-2701], Sand, Salomon [0000-0002-3360-0534], Schwerdtle, Tanja [0000-0002-4873-7488], Vleminckx, Christiane [0000-0002-9928-1601], Goldbeck, Christophe [0000-0003-1539-464X], Gómez-Ruiz, José Ángel [0000-0001-9386-6185], EFSA CONTAM Panel, Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Del Mazo, Jesús, Grasl-Kraupp, Bettina, Hogstrand, Christer, Hoogenboom, Laurentius (Ron), Leblanc, Jean-Charles, Nebbia, Carlo Stefano, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Alexander, Jan, Goldbeck, Christophe, Grob, Konrad, Gómez-Ruiz, José Ángel, Mosbach-Schulz, Olaf, Binaglia, Marco, and Chipman, James Kevin
- Abstract
Mineral oil hydrocarbons (MOH) are composed of saturated hydrocarbons (MOSH) and aromatic hydrocarbons (MOAH). Due to the complexity of the MOH composition, their complete chemical characterisation is not possible. MOSH accumulation is observed in various tissues, with species-specific differences. Formation of liver epithelioid lipogranulomas and inflammation, as well as increased liver and spleen weights, are observed in Fischer 344 (F344) rats, but not in Sprague–Dawley (SD) rats. These effects are related to specific accumulation of wax components in the liver of F344 rats, which is not observed in SD rats or humans. The CONTAM Panel concluded that F344 rats are not an appropriate model for effects of MOSH with wax components. A NOAEL of 236 mg/kg body weight (bw) per day, corresponding to the highest tested dose in F344 rats of a white mineral oil product virtually free of wax components, was selected as relevant reference point (RP). The highest dietary exposure to MOSH was estimated for the young population, with lower bound–upper bound (LB–UB) means and 95th percentiles of 0.085–0.126 and 0.157–0.212 mg/kg bw per day, respectively.Considering a margin of exposure approach, the Panel concluded that the present dietary exposure to MOSH does not raise concern for human health for all age classes. Genotoxicity and carcinogenicity are associated with MOAH with three or more aromatic rings. For this subfraction, a surrogate RP of 0.49 mg/kg bw per day, calculated from data on eight polycyclic aromatic hydrocarbons, was considered. The highest dietary exposure to MOAH was also in the young population, with LB–UB mean and 95th percentile estimations of 0.003–0.031 and 0.011–0.059 mg/kg bw per day,respectively. Based on two scenarios on three or more ring MOAH contents in the diet and lacking toxicological information on effects of 1 and 2 ring MOAH, a possible concern for human health was raised.
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- 2023
20. Metabolism of carcinogenic alpha-asarone by human cytochrome P450 enzymes
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Cartus, Alexander T. and Schrenk, Dieter
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- 2020
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21. Toxicodynamic Tests
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Cartus, Alexander, primary and Schrenk, Dieter, additional
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- 2020
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22. Risks for animal and human health related to the presence of polychlorinated naphthalenes (PCNs) in feed and food.
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Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Chipman, James Kevin, del Mazo, Jesús, Grasl‐Kraupp, Bettina, Hogstrand, Christer, Hoogenboom, Laurentius, Leblanc, Jean‐Charles, Nebbia, Carlo Stefano, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Falandysz, Jerzy, Hart, Andrew, Rose, Martin, and Anastassiadou, Maria
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POLYCHLORINATED naphthalenes , *ANIMAL health , *BREAST milk , *PLATELET count , *NUTRITION surveys - Abstract
EFSA was asked for a scientific opinion on the risks for animal and human health related to the presence of polychlorinated naphthalenes (PCNs) in feed and food. The assessment focused on hexaCNs due to very limited data on other PCN congeners. For hexaCNs in feed, 217 analytical results were used to estimate dietary exposures for food‐producing and non‐food‐producing animals; however, a risk characterisation could not be performed because none of the toxicological studies allowed identification of reference points. The oral repeated dose toxicity studies performed in rats with a hexaCN mixture containing all 10 hexaCNs indicated that the critical target was the haematological system. A BMDL20 of 0.05 mg/kg body weight (bw) per day was identified for a considerable decrease in the platelet count. For hexaCNs in food, 2317 analytical results were used to estimate dietary exposures across dietary surveys and age groups. The highest exposure ranged from 0.91 to 29.8 pg/kg bw per day in general population and from 220 to 559 pg/kg bw per day for breast‐fed infants with the highest consumption of breast milk. Applying a margin of exposure (MOE) approach, the estimated MOEs for the high dietary exposures ranged from 1,700,000 to 55,000,000 for the general population and from 90,000 to 230,000 for breast‐fed infants with the highest consumption of breast milk. These MOEs are far above the minimum MOE of 2000 that does not raise a health concern. Taking account of the uncertainties affecting the assessment, the Panel concluded with at least 99% certainty that dietary exposure to hexaCNs does not raise a health concern for any of the population groups considered. Due to major limitations in the available data, no assessment was possible for genotoxic effects or for health risks of PCNs other than hexaCNs. [ABSTRACT FROM AUTHOR]
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- 2024
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23. Correction to: Lack of adverse effects in subchronic and chronic toxicity/carcinogenicity studies on the glyphosate-resistant genetically modified maize NK603 in Wistar Han RCC rats
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Steinberg, Pablo, van der Voet, Hilko, Goedhart, Paul W., Kleter, Gijs, Kok, Esther J., Pla, Maria, Nadal, Anna, Zeljenková, Dagmar, Aláčová, Radka, Babincová, Júlia, Rollerová, Eva, Jaďuďová, Soňa, Kebis, Anton, Szabova, Elena, Tulinská, Jana, Líšková, Aurélia, Takácsová, Melinda, Mikušová, Miroslava Lehotská, Krivošíková, Zora, Spök, Armin, Racovita, Monica, de Vriend, Huib, Alison, Roger, Alison, Clare, Baumgärtner, Wolfgang, Becker, Kathrin, Lempp, Charlotte, Schmicke, Marion, Schrenk, Dieter, Pöting, Annette, Schiemann, Joachim, and Wilhelm, Ralf
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- 2020
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24. Formation and fate of DNA adducts of alpha- and beta-asarone in rat hepatocytes
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Stegmüller, Simone, Schrenk, Dieter, and Cartus, Alexander T.
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- 2018
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25. What is the meaning of ‘A compound is carcinogenic’?
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Schrenk, Dieter
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- 2018
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26. Lack of adverse effects in subchronic and chronic toxicity/carcinogenicity studies on the glyphosate-resistant genetically modified maize NK603 in Wistar Han RCC rats
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Steinberg, Pablo, van der Voet, Hilko, Goedhart, Paul W., Kleter, Gijs, Kok, Esther J., Pla, Maria, Nadal, Anna, Zeljenková, Dagmar, Aláčová, Radka, Babincová, Júlia, Rollerová, Eva, Jaďuďová, Soňa, Kebis, Anton, Szabova, Elena, Tulinská, Jana, Líšková, Aurélia, Takácsová, Melinda, Mikušová, Miroslava Lehotská, Krivošíková, Zora, Spök, Armin, Racovita, Monica, de Vriend, Huib, Alison, Roger, Alison, Clare, Baumgärtner, Wolfgang, Becker, Kathrin, Lempp, Charlotte, Schmicke, Marion, Schrenk, Dieter, Pöting, Annette, Schiemann, Joachim, and Wilhelm, Ralf
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- 2019
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27. In vitro investigations on the hepatotoxicity and genotoxicity of food‐relevant pyrrolizidine alkaloids
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Rutz, Lukas, primary and Schrenk, Dieter, additional
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- 2023
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28. Structure‐dependent relative toxic potencies of selected pyrrolizidine alkaloids
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Gao, Lan, primary and Schrenk, Dieter, additional
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- 2023
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29. Current methods in risk assessment of genotoxic chemicals
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Cartus, Alexander and Schrenk, Dieter
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- 2017
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30. Guidance for the assessment of detoxification processes in feed.
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Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Chipman, James Kevin, del Mazo, Jesus, Grasl‐Kraupp, Bettina, Hoogenboom, Laurentius, Leblanc, Jean‐Charles, Nebbia, Carlo Stefano, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Rose, Martin, Cottrill, Bruce, Lundebye, Anne Katrine, and Metzler, Manfred
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ANIMAL products , *ANIMAL feeds , *RISK assessment - Abstract
This statement provides scientific guidance on the information needed to support the risk assessment of the detoxification processes applied to products intended for animal feed in line with the acceptability criteria of the Commission Regulation (EU) 2015/786. [ABSTRACT FROM AUTHOR]
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- 2024
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31. Risks for animal health related to the presence of ergot alkaloids in feed.
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Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Chipman, James Kevin, del Mazo, Jesús, Grasl‐Kraupp, Bettina, Hogstrand, Christer, Leblanc, Jean‐Charles, Nebbia, Carlo Stefano, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Gropp, Jürgen, Mulder, Patrick, Oswald, Isabelle P., and Woutersen, Ruud
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SWINE farms , *ERGOT alkaloids , *ANIMAL health , *FOOD of animal origin , *HENS , *MILK yield - Abstract
The European Commission requested EFSA to provide an update of the 2012 Scientific Opinion of the Panel on Contaminants in the Food Chain (CONTAM) on the risks for animal health related to the presence of ergot alkaloids (EAs) in feed. EAs are produced by several fungi of the Claviceps and Epichloë genera. This Opinion focussed on the 14 EAs produced by C. purpurea (ergocristine, ergotamine, ergocornine, α‐ and β‐ergocryptine, ergometrine, ergosine and their corresponding 'inine' epimers). Effects observed with EAs from C. africana (mainly dihydroergosine) and Epichloë (ergovaline/−inine) were also evaluated. There is limited information on toxicokinetics in food and non‐food producing animals. However, transfer from feed to food of animal origin is negligible. The major effects of EAs are related to vasoconstriction and are exaggerated during extreme temperatures. In addition, EAs cause a decrease in prolactin, resulting in a reduced milk production. Based on the sum of the EAs, the Panel considered the following as Reference Points (RPs) in complete feed for adverse animal health effects: for pigs and piglets 0.6 mg/kg, for chickens for fattening and hens 2.1 and 3.7 mg/kg, respectively, for ducks 0.2 mg/kg, bovines 0.1 mg/kg and sheep 0.3 mg/kg. A total of 19,023 analytical results on EAs (only from C. purpurea) in feed materials and compound feeds were available for the exposure assessment (1580 samples). Dietary exposure was assessed using two feeding scenarios (model diets and compound feeds). Risk characterisation was done for the animals for which an RP could be identified. The CONTAM Panel considers that, based on exposure from model diets, the presence of EAs in feed raises a health concern in piglets, pigs for fattening, sows and bovines, while for chickens for fattening, laying hens, ducks, ovines and caprines, the health concern related to EAs in feed is low. [ABSTRACT FROM AUTHOR]
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- 2024
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32. Update of the risk assessment of polybrominated diphenyl ethers (PBDEs) in food.
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Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Chipman, James Kevin, del Mazo, Jesús, Grasl‐Kraupp, Bettina, Hogstrand, Christer, Hoogenboom, Laurentius, Leblanc, Jean‐Charles, Nebbia, Carlo Stefano, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Wallace, Heather, Benford, Diane, Fürst, Peter, Hart, Andy, and Rose, Martin
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POLYBROMINATED diphenyl ethers , *RISK assessment , *BODY burden , *ANIMAL sexual behavior , *CONFIDENCE intervals , *ANIMAL industry - Abstract
The European Commission asked EFSA to update its 2011 risk assessment on polybrominated diphenyl ethers (PBDEs) in food, focusing on 10 congeners: BDE‐28, ‐47, ‐49, ‐99, ‐100, ‐138, ‐153, ‐154, ‐183 and ‑209. The CONTAM Panel concluded that the neurodevelopmental effects on behaviour and reproductive/developmental effects are the critical effects in rodent studies. For four congeners (BDE‐47, ‐99, ‐153, ‐209) the Panel derived Reference Points, i.e. benchmark doses and corresponding lower 95% confidence limits (BMDLs), for endpoint‐specific benchmark responses. Since repeated exposure to PBDEs results in accumulation of these chemicals in the body, the Panel estimated the body burden at the BMDL in rodents, and the chronic intake that would lead to the same body burden in humans. For the remaining six congeners no studies were available to identify Reference Points. The Panel concluded that there is scientific basis for inclusion of all 10 congeners in a common assessment group and performed a combined risk assessment. The Panel concluded that the combined margin of exposure (MOET) approach was the most appropriate risk metric and applied a tiered approach to the risk characterisation. Over 84,000 analytical results for the 10 congeners in food were used to estimate the exposure across dietary surveys and age groups of the European population. The most important contributors to the chronic dietary Lower Bound exposure to PBDEs were meat and meat products and fish and seafood. Taking into account the uncertainties affecting the assessment, the Panel concluded that it is likely that current dietary exposure to PBDEs in the European population raises a health concern. [ABSTRACT FROM AUTHOR]
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- 2024
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33. Update of the risk assessment of inorganic arsenic in food.
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Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Chipman, James Kevin, del Mazo, Jesús, Grasl‐Kraupp, Bettina, Hogstrand, Christer, Hoogenboom, Laurentius, Leblanc, Jean‐Charles, Nebbia, Carlo Stefano, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Vleminckx, Christiane, Wallace, Heather, Barregård, Lars, Benford, Diane, Broberg, Karin, and Dogliotti, Eugenia
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ARSENIC , *RISK assessment , *CONFIDENCE intervals , *SKIN cancer , *DRINKING water - Abstract
The European Commission asked EFSA to update its 2009 risk assessment on arsenic in food carrying out a hazard assessment of inorganic arsenic (iAs) and using the revised exposure assessment issued by EFSA in 2021. Epidemiological studies show that the chronic intake of iAs via diet and/or drinking water is associated with increased risk of several adverse outcomes including cancers of the skin, bladder and lung. The CONTAM Panel used the benchmark dose lower confidence limit based on a benchmark response (BMR) of 5% (relative increase of the background incidence after adjustment for confounders, BMDL05) of 0.06 μg iAs/kg bw per day obtained from a study on skin cancer as a Reference Point (RP). Inorganic As is a genotoxic carcinogen with additional epigenetic effects and the CONTAM Panel applied a margin of exposure (MOE) approach for the risk characterisation. In adults, the MOEs are low (range between 2 and 0.4 for mean consumers and between 0.9 and 0.2 at the 95th percentile exposure, respectively) and as such raise a health concern despite the uncertainties. [ABSTRACT FROM AUTHOR]
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- 2024
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34. Risks for animal health related to the presence of ochratoxin A (OTA) in feed.
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Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Chipman, James Kevin, del Mazo, Jesús, Grasl‐Kraupp, Bettina, Hogstrand, Christer, Hoogenboom, Laurentius, Leblanc, Jean‐Charles, Nielsen, Elsa, Ntzani, Evangelia, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Gropp, Jürgen, Antonissen, Gunther, Rychen, Guido, Gómez Ruiz, José Ángel, and Innocenti, Matteo Lorenzo
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ANIMAL health , *FOOD of animal origin , *ANIMAL industry , *CATTLE feeding & feeds , *SERUM albumin , *WEIGHT gain , *ANIMAL species - Abstract
In 2004, the EFSA Panel on Contaminants in the Food Chain (CONTAM) adopted a Scientific Opinion on the risks to animal health and transfer from feed to food of animal origin related to the presence of ochratoxin A (OTA) in feed. The European Commission requested EFSA to assess newly available scientific information and to update the 2004 Scientific Opinion. OTA is produced by several fungi of the genera Aspergillus and Penicillium. In most animal species it is rapidly and extensively absorbed in the gastro‐intestinal tract, binds strongly to plasma albumins and is mainly detoxified to ochratoxin alpha (OTalpha) by ruminal microbiota. In pigs, OTA has been found mainly in liver and kidney. Transfer of OTA from feed to milk in ruminants and donkeys as well as to eggs from poultry is confirmed but low. Overall, OTA impairs function and structure of kidneys and liver, causes immunosuppression and affects the zootechnical performance (e.g. body weight gain, feed/gain ratio, etc.), with monogastric species being more susceptible than ruminants because of limited detoxification to OTalpha. The CONTAM Panel considered as reference point (RP) for adverse animal health effects: for pigs and rabbits 0.01 mg OTA/kg feed, for chickens for fattening and hens 0.03 mg OTA/kg feed. A total of 9,184 analytical results on OTA in feed, expressed in dry matter, were available. Dietary exposure was assessed using different scenarios based on either model diets or compound feed (complete feed or complementary feed plus forage). Risk characterisation was made for the animals for which an RP could be identified. The CONTAM Panel considers that the risk related to OTA in feed for adverse health effects for pigs, chickens for fattening, hens and rabbits is low. [ABSTRACT FROM AUTHOR]
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- 2023
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35. Modern Concepts in Chemical Risk Assessment
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Schrenk, Dieter, primary
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- 2019
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36. Toxic Equivalency Factors (TEFs) for PCBs, PCDDs, PCDFs for Humans and Wildlife
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Van den Berg, Martin, Birnbaum, Linda, Brunström, Björn, Cook, Philip, Feeley, Mark, Giesy, John P., Hanberg, Annika, Hasegawa, Ryuichi, Kennedy, Sean W., Kubiak, Timothy, Larsen, John Christian, Nolt, Cynthia, Peterson, Richard E., Poellinger, Lorenz, Safe, Stephen, Schrenk, Dieter, Tillitt, Donald, Tysklind, Mats, Younes, Maged, Wærn, Fredrik, and Zacharewski, Tim
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- 1998
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37. Interim relative potency factors for the toxicological risk assessment of pyrrolizidine alkaloids in food and herbal medicines
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Merz, Karl-Heinz and Schrenk, Dieter
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- 2016
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38. In vitro biotransformation of pyrrolizidine alkaloids in different species. Part I: Microsomal degradation
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Kolrep, Franziska, Numata, Jorge, Kneuer, Carsten, Preiss-Weigert, Angelika, Lahrssen-Wiederholt, Monika, Schrenk, Dieter, and These, Anja
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- 2018
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39. Dioxinlike Components in Incinerator Fly Ash: A Comparison between Chemical Analysis Data and Results from a Cell Culture Bioassay
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Till, Markus, Behnisch, Peter, Hagenmaier, Hanspaul, Bock, Karl Walter, and Schrenk, Dieter
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- 1997
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40. Phase II Metabolism of Benzene
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Schrenk, Dieter, Orzechowski, Achim, Schwarz, Leslie R., Snyder, Robert, Burchell, Brian, Ingelman-Sundberg, Magnus, and Bock, Karl Walter
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- 1996
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41. Guidance on protocol development for EFSA generic scientific assessments
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EFSA Scientific Committee, More, Simon, Bampidis, Vasileios, Benford, Diane, Bragard, Claude, Hernández-Jerez, Antonio, Bennekou, Susanne Hougaard, Koutsoumanis, Konstantinos Panagiotis, Lambré, Claude, Machera, Kyriaki, Mullins, Ewen, Nielsen, Søren Saxmose, Schlatter, Josef, Schrenk, Dieter, Turck, Dominique, Younes, Maged, Kraft, Andrew, Naegeli, Hanspeter, Tsaioun, Katya, Aiassa, Elisa, Arcella, Davide, Barizzone, Fulvio, Cushen, Maeve, Georgiadis, Marios, Gervelmeyer, Andrea, Lanzoni, Anna, Lenzi, Paolo, Lodi, Federica, Martino, Laura, Messens, Winy, Ramos Bordajandi, Luisa, Rizzi, Valentina, Stancanelli, Giuseppe, Supej, Špela, Halldorsson, Thorhallur Ingi, EFSA Scientific Committee, More, Simon, Bampidis, Vasileios, Benford, Diane, Bragard, Claude, Hernández-Jerez, Antonio, Bennekou, Susanne Hougaard, Koutsoumanis, Konstantinos Panagiotis, Lambré, Claude, Machera, Kyriaki, Mullins, Ewen, Nielsen, Søren Saxmose, Schlatter, Josef, Schrenk, Dieter, Turck, Dominique, Younes, Maged, Kraft, Andrew, Naegeli, Hanspeter, Tsaioun, Katya, Aiassa, Elisa, Arcella, Davide, Barizzone, Fulvio, Cushen, Maeve, Georgiadis, Marios, Gervelmeyer, Andrea, Lanzoni, Anna, Lenzi, Paolo, Lodi, Federica, Martino, Laura, Messens, Winy, Ramos Bordajandi, Luisa, Rizzi, Valentina, Stancanelli, Giuseppe, Supej, Špela, and Halldorsson, Thorhallur Ingi
- Abstract
EFSA Strategy 2027 outlines the need for fit-for-purpose protocols for EFSA generic scientific assessments to aid in delivering trustworthy scientific advice. This EFSA Scientific Committee guidance document helps address this need by providing a harmonised and flexible framework for developing protocols for EFSA generic assessments. The guidance replaces the ?Draft framework for protocol development for EFSA's scientific assessments? published in 2020. The two main steps in protocol development are described. The first is problem formulation, which illustrates the objectives of the assessment. Here a new approach to translating the mandated Terms of Reference into scientifically answerable assessment questions and sub-questions is proposed: the ?APRIO' paradigm (Agent, Pathway, Receptor, Intervention and Output). Owing to its cross-cutting nature, this paradigm is considered adaptable and broadly applicable within and across the various EFSA domains and, if applied using the definitions given in this guidance, is expected to help harmonise the problem formulation process and outputs and foster consistency in protocol development. APRIO may also overcome the difficulty of implementing some existing frameworks across the multiple EFSA disciplines, e.g. the PICO/PECO approach (Population, Intervention/Exposure, Comparator, Outcome). Therefore, although not mandatory, APRIO is recommended. The second step in protocol development is the specification of the evidence needs and the methods that will be applied for answering the assessment questions and sub-questions, including uncertainty analysis. Five possible approaches to answering individual (sub-)questions are outlined: using evidence from scientific literature and study reports; using data from databases other than bibliographic; using expert judgement informally collected or elicited via semi-formal or formal expert knowledge elicitation processes; using mathematical/statistical models; and ? not covered in this g
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- 2023
42. Assessment of the processing conditions which make the Ambrosia seeds non-viable
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Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Chipman, James Kevin, del Mazo, Jesús, Grasl-Kraupp, Bettina, Hoogenboom, Laurentius, Leblanc, Jean Charles, Nebbia, Carlo Stefano, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Christodoulidou, Anna, Hogstrand, Christer, Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Chipman, James Kevin, del Mazo, Jesús, Grasl-Kraupp, Bettina, Hoogenboom, Laurentius, Leblanc, Jean Charles, Nebbia, Carlo Stefano, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Christodoulidou, Anna, and Hogstrand, Christer
- Abstract
The European Commission requested EFSA to provide an assessment of the processing conditions which make Ambrosia seeds non-viable in feed materials and compound feed. This assessment also includes information on a reliable procedure to verify the non-viability of the seeds. Ambrosia seeds are known contaminants in feed with maximum levels set in the Directive 2002/32/EC. The manufacturing processes and processing conditions applied to the feed may affect the viability of the Ambrosia seeds. Therefore, the CONTAM Panel compared these conditions with conditions that have been shown to be sufficient to render Ambrosia seeds non-viable. The Panel concluded with a certainty of 99–100% that solvent extraction and toasting of oilseed meals at temperatures of 120°C with steam injection for 10 min or more will make Ambrosia seeds non-viable. Since milling/grinding feed materials for compound feed of piglets, aquatic species and non-food producing animals would not allow particles of sizes ≥1 mm (the minimum size of viable Ambrosia seeds) passing the grinding process it was considered very likely (with ≥ 90% certainty) that these feeds will not contain viable Ambrosia seeds. In poultry, pig, and possibly cattle feed, particle sizes are ≥ 1 mm and therefore Ambrosia seeds could likely (66–90% certainty) survive the grinding process. Starch and gluten either from corn or wheat wet milling would not contain Ambrosia seeds with 99–100% certainty. Finally, ensiling fresh forages contaminated with A. artemisiifolia seeds for more than 3 months is very likely to render all seeds non-viable. The Panel concluded that a combination of the germination test and a subsequent triphenyl-tetrazolium-chloride (TTC) test will very likely (with ≥ 90% certainty) verify the non-viability of Ambrosia seeds. The Panel recommends that data on the presence of viable Ambrosia seeds before and after the different feed production processes should be generated.
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- 2023
43. Assessment of information as regards the toxicity of deoxynivalenol for horses and poultry
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Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, del Mazo, James Kevin Chipman Jesús, Grasl-Kraupp, Bettina, Hogstrand, Christer, Leblanc, Jean Charles, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Dänicke, Sven, Nebbia, Carlo Stefano, Oswald, Isabelle P., Rovesti, Elena, Steinkellner, Hans, Hoogenboom, Laurentius, Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, del Mazo, James Kevin Chipman Jesús, Grasl-Kraupp, Bettina, Hogstrand, Christer, Leblanc, Jean Charles, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Dänicke, Sven, Nebbia, Carlo Stefano, Oswald, Isabelle P., Rovesti, Elena, Steinkellner, Hans, and Hoogenboom, Laurentius
- Abstract
In 2017, the EFSA Panel on Contaminants in the Food Chain (CONTAM) adopted a Scientific Opinion on the risks for animal health related to the presence of deoxynivalenol (DON) and its acetylated and modified forms in food and feed. No observed adverse effect levels (NOAELs) and lowest observed adverse effect levels (LOAELs) were derived for different animal species. For horses, an NOAEL of 36 mg DON/kg feed was established, the highest concentration tested and not showing adverse effects. For poultry, an NOAEL of 5 mg DON/kg feed for broiler chickens and laying hens, and an NOAEL of 7 mg DON/kg feed for ducks and turkeys was derived. The European Commission requested EFSA to review the information regarding the toxicity of DON for horses and poultry and to revise, if necessary, the established reference points (RPs). Adverse effect levels of 1.9 and 1.7 mg DON/kg feed for, respectively, broiler chickens and turkeys were derived from reassessment of existing studies and newly available literature, showing that DON causes effects on the intestines, in particular the jejunum, with a decreased villus height but also histological damage. An RP for adverse animal health effects of 0.6 mg/kg feed for broiler chickens and turkeys, respectively, was established. For horses, an adverse effect level of 5.6 mg DON/kg feed was established from studies showing reduced feed intake, with an RP for adverse animal health effects of 3.5 mg/kg feed. For ducks and laying hens, RPs remain unchanged. Based on mean and P95 (UB) exposure estimates performed in the previous Opinion, the risk of adverse health effects of feeds containing DON was considered a potential concern for broiler chickens and turkeys. For horses, the risk for adverse health effects from feed containing DON is low.
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- 2023
44. Update of the risk assessment of mineral oil hydrocarbons in food
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Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, del Mazo, Jesús, Grasl-Kraupp, Bettina, Hogstrand, Christer, Hoogenboom, Laurentius, Leblanc, Jean Charles, Nebbia, Carlo Stefano, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Alexander, Jan, Goldbeck, Christophe, Grob, Konrad, Gómez Ruiz, Jose Ángel, Mosbach-Schulz, Olaf, Binaglia, Marco, Chipman, James Kevin, Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, del Mazo, Jesús, Grasl-Kraupp, Bettina, Hogstrand, Christer, Hoogenboom, Laurentius, Leblanc, Jean Charles, Nebbia, Carlo Stefano, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Alexander, Jan, Goldbeck, Christophe, Grob, Konrad, Gómez Ruiz, Jose Ángel, Mosbach-Schulz, Olaf, Binaglia, Marco, and Chipman, James Kevin
- Abstract
Mineral oil hydrocarbons (MOH) are composed of saturated hydrocarbons (MOSH) and aromatic hydrocarbons (MOAH). Due to the complexity of the MOH composition, their complete chemical characterisation is not possible. MOSH accumulation is observed in various tissues, with species-specific differences. Formation of liver epithelioid lipogranulomas and inflammation, as well as increased liver and spleen weights, are observed in Fischer 344 (F344) rats, but not in Sprague–Dawley (SD) rats. These effects are related to specific accumulation of wax components in the liver of F344 rats, which is not observed in SD rats or humans. The CONTAM Panel concluded that F344 rats are not an appropriate model for effects of MOSH with wax components. A NOAEL of 236 mg/kg body weight (bw) per day, corresponding to the highest tested dose in F344 rats of a white mineral oil product virtually free of wax components, was selected as relevant reference point (RP). The highest dietary exposure to MOSH was estimated for the young population, with lower bound–upper bound (LB–UB) means and 95th percentiles of 0.085–0.126 and 0.157–0.212 mg/kg bw per day, respectively. Considering a margin of exposure approach, the Panel concluded that the present dietary exposure to MOSH does not raise concern for human health for all age classes. Genotoxicity and carcinogenicity are associated with MOAH with three or more aromatic rings. For this subfraction, a surrogate RP of 0.49 mg/kg bw per day, calculated from data on eight polycyclic aromatic hydrocarbons, was considered. The highest dietary exposure to MOAH was also in the young population, with LB–UB mean and 95th percentile estimations of 0.003–0.031 and 0.011–0.059 mg/kg bw per day, respectively. Based on two scenarios on three or more ring MOAH contents in the diet and lacking toxicological information on effects of 1 and 2 ring MOAH, a possible concern for human health was raised.
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- 2023
45. Re-evaluation of the existing health-based guidance values for copper and exposure assessment from all sources
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More, Simon John, Bampidis, Vasileios, Benford, Diane, Bragard, Claude, Halldorsson, Thorhallur Ingi, Hernández-Jerez, Antonio F, Bennekou, Susanne Hougaard, Koutsoumanis, Kostas, Lambré, Claude, Machera, Kyriaki, Mullins, Ewen, Nielsen, Søren Saxmose, Schlatter, Josef R, Schrenk, Dieter, Turck, Dominique, Younes, Maged, Boon, Polly, Ferns, Gordon Aa, Lindtner, Oliver, Smolders, Erik, Wilks, Martin, Bastaki, Maria, de Sesmaisons-Lecarré, Agnès, Ferreira, Lucien, Greco, Luna, Kass, George E N, Riolo, Francesca, Leblanc, Jean-Charles, More, Simon John, Bampidis, Vasileios, Benford, Diane, Bragard, Claude, Halldorsson, Thorhallur Ingi, Hernández-Jerez, Antonio F, Bennekou, Susanne Hougaard, Koutsoumanis, Kostas, Lambré, Claude, Machera, Kyriaki, Mullins, Ewen, Nielsen, Søren Saxmose, Schlatter, Josef R, Schrenk, Dieter, Turck, Dominique, Younes, Maged, Boon, Polly, Ferns, Gordon Aa, Lindtner, Oliver, Smolders, Erik, Wilks, Martin, Bastaki, Maria, de Sesmaisons-Lecarré, Agnès, Ferreira, Lucien, Greco, Luna, Kass, George E N, Riolo, Francesca, and Leblanc, Jean-Charles
- Abstract
Copper is an essential micronutrient and also a regulated product used in organic and in conventional farming pest management. Both deficiency and excessive exposure to copper can have adverse health effects. In this Scientific Opinion, the EFSA 2021 harmonised approach for establishing health-based guidance values (HBGVs) for substances that are regulated products and also nutrients was used to resolve the divergent existing HBGVs for copper. The tightly regulated homeostasis prevents toxicity manifestation in the short term, but the development of chronic copper toxicity is dependent on copper homeostasis and its tissue retention. Evidence from Wilson disease suggests that hepatic retention is indicative of potential future and possibly sudden onset of copper toxicity under conditions of continuous intake. Hence, emphasis was placed on copper retention as an early marker of potential adverse effects. The relationships between (a) chronic copper exposure and its retention in the body, particularly the liver, and (b) hepatic copper concentrations and evidence of toxicity were examined. The Scientific Committee (SC) concludes that no retention of copper is expected to occur with intake of 5 mg/day and established an Acceptable Daily Intake (ADI) of 0.07 mg/kg bw. A refined dietary exposure assessment was performed, assessing contribution from dietary and non-dietary sources. Background copper levels are a significant source of copper. The contribution of copper from its use as plant protection product (PPP), food and feed additives or fertilisers is negligible. The use of copper in fertilisers or PPPs contributes to copper accumulation in soil. Infant formula and follow-on formula are important contributors to dietary exposure of copper in infants and toddlers. Contribution from non-oral sources is negligible. Dietary exposure to total copper does not exceed the HBGV in adolescents, adults, elderly and the very elderly. Neither hepatic copper retention nor adverse
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- 2023
46. EFSA Opinion Update of risks for animal health related to the presence of ochratoxin A (OTA) in feed: Annexes on Occurrence data in feed submitted to EFSA
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Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Chipman, James Kevin, del Mazo, Jesús, Grasl-Kraupp, Bettina, Hogstrand, Christer, Hoogenboom, Laurentius, Leblanc, Jean Charles, Nielsen, Elsa, Ntzani, Evangelia, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Gropp, Jürgen, Antonissen, Gunther, Rychen, Guido, Gómez Ruiz, José Ángel, Innocenti, Matteo Lorenzo, Rovesti, Elena, Petersen, Annette, Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Chipman, James Kevin, del Mazo, Jesús, Grasl-Kraupp, Bettina, Hogstrand, Christer, Hoogenboom, Laurentius, Leblanc, Jean Charles, Nielsen, Elsa, Ntzani, Evangelia, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Gropp, Jürgen, Antonissen, Gunther, Rychen, Guido, Gómez Ruiz, José Ángel, Innocenti, Matteo Lorenzo, Rovesti, Elena, and Petersen, Annette
- Abstract
Annexes to EFSA's Update Opinion on the risks for animal health related to the presence of OTA in feed. Annex B includes the occurrence data in feed extracted from EFSA Data Warehouse for the period from 2012 to 2021. Annex C contains the occurrence data expressed in dry matter following analysis and cleansing of the dataset as detailed in EFSA's Opinion. Annex D lists the samples of 'Compound feed' and other feed materials except forage expressed in whole weight. The number of samples across some of the feed categories differ among the two annex C and D because in few cases the moisture content was not reported (and no assumption on the moisture could be done), precluding the conversion of the analytical results to either whole weight or dry matter., Annexes to EFSA's Update Opinion on the risks for animal health related to the presence of OTA in feed. Annex B includes the occurrence data in feed extracted from EFSA Data Warehouse for the period from 2012 to 2021. Annex C contains the occurrence data expressed in dry matter following analysis and cleansing of the dataset as detailed in EFSA's Opinion. Annex D lists the samples of 'Compound feed' and other feed materials except forage expressed in whole weight. The number of samples across some of the feed categories differ among the two annex C and D because in few cases the moisture content was not reported (and no assumption on the moisture could be done), precluding the conversion of the analytical results to either whole weight or dry matter.
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- 2023
47. Occurrence data on N-nitrosamines provided to EFSA
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Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Chipman, James Kevin, del Mazo, Jesús, Hogstrand, Christer, Hoogenboom, Laurentius, Leblanc, Jean Charles, Nebbia, Carlo Stefano, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Romualdo, Benigni, Cristina, Fortes, Stephen, Hecht, Iammarino, Marco, Mosbach-Schulz, Olaf, Riolo, Francesca, Christodoulidou, Anna, Grasl-Kraupp, Bettina, Schrenk, Dieter, Bignami, Margherita, Bodin, Laurent, Chipman, James Kevin, del Mazo, Jesús, Hogstrand, Christer, Hoogenboom, Laurentius, Leblanc, Jean Charles, Nebbia, Carlo Stefano, Nielsen, Elsa, Ntzani, Evangelia, Petersen, Annette, Sand, Salomon, Schwerdtle, Tanja, Vleminckx, Christiane, Wallace, Heather, Romualdo, Benigni, Cristina, Fortes, Stephen, Hecht, Iammarino, Marco, Mosbach-Schulz, Olaf, Riolo, Francesca, Christodoulidou, Anna, and Grasl-Kraupp, Bettina
- Abstract
The file contains the raw occurrence dataset on nitrosamines in food as extracted from EFSA DWH on 3 July 2021 and presented in the EFSA opinion on Risk assessment of N-nitrosamines in food available at https://doi.org/10.2903/j.efsa.2023.7884. The data is provided in csv format. This dataset is compliant with EFSA SSD2 data model and contains two additional columns documenting issues identified in the cleaning process (column: issue) and the action taken (column: action) to address the issue (e.g. delete record or update values in specific fields). The link to the catalogues of controlled terminologies for the updated textual description of fields values can be found under "Related identifiers”., The file contains the raw occurrence dataset on nitrosamines in food as extracted from EFSA DWH on 3 July 2021 and presented in the EFSA opinion on Risk assessment of N-nitrosamines in food available at https://doi.org/10.2903/j.efsa.2023.7884. The data is provided in csv format. This dataset is compliant with EFSA SSD2 data model and contains two additional columns documenting issues identified in the cleaning process (column: issue) and the action taken (column: action) to address the issue (e.g. delete record or update values in specific fields). The link to the catalogues of controlled terminologies for the updated textual description of fields values can be found under "Related identifiers”.
- Published
- 2023
48. Guidance on protocol development for EFSA generic scientific assessments
- Author
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More, Simon, Bampidis, Vasileios, Benford, Diane, Bragard, Claude, Hernández‐Jerez, Antonio, Bennekou, Susanne Hougaard, Koutsoumanis, Konstantinos Panagiotis, Lambré, Claude, Machera, Kyriaki, Mullins, Ewen, Nielsen, Søren Saxmose, Schlatter, Josef, Schrenk, Dieter, Turck, Dominique, Younes, Maged, Kraft, Andrew, Naegeli, Hanspeter; https://orcid.org/0000-0001-5762-1359, Tsaioun, Katya, Aiassa, Elisa, Arcella, Davide, Barizzone, Fulvio, Cushen, Maeve, Georgiadis, Marios, Gervelmeyer, Andrea, Lanzoni, Anna, Lenzi, Paolo, Lodi, Federica, Martino, Laura, Messens, Winy, et al, More, Simon, Bampidis, Vasileios, Benford, Diane, Bragard, Claude, Hernández‐Jerez, Antonio, Bennekou, Susanne Hougaard, Koutsoumanis, Konstantinos Panagiotis, Lambré, Claude, Machera, Kyriaki, Mullins, Ewen, Nielsen, Søren Saxmose, Schlatter, Josef, Schrenk, Dieter, Turck, Dominique, Younes, Maged, Kraft, Andrew, Naegeli, Hanspeter; https://orcid.org/0000-0001-5762-1359, Tsaioun, Katya, Aiassa, Elisa, Arcella, Davide, Barizzone, Fulvio, Cushen, Maeve, Georgiadis, Marios, Gervelmeyer, Andrea, Lanzoni, Anna, Lenzi, Paolo, Lodi, Federica, Martino, Laura, Messens, Winy, and et al
- Abstract
EFSA Strategy 2027 outlines the need for fit-for-purpose protocols for EFSA generic scientific assessments to aid in delivering trustworthy scientific advice. This EFSA Scientific Committee guidance document helps address this need by providing a harmonised and flexible framework for developing protocols for EFSA generic assessments. The guidance replaces the 'Draft framework for protocol development for EFSA's scientific assessments' published in 2020. The two main steps in protocol development are described. The first is problem formulation, which illustrates the objectives of the assessment. Here a new approach to translating the mandated Terms of Reference into scientifically answerable assessment questions and sub-questions is proposed: the 'APRIO' paradigm (Agent, Pathway, Receptor, Intervention and Output). Owing to its cross-cutting nature, this paradigm is considered adaptable and broadly applicable within and across the various EFSA domains and, if applied using the definitions given in this guidance, is expected to help harmonise the problem formulation process and outputs and foster consistency in protocol development. APRIO may also overcome the difficulty of implementing some existing frameworks across the multiple EFSA disciplines, e.g. the PICO/PECO approach (Population, Intervention/Exposure, Comparator, Outcome). Therefore, although not mandatory, APRIO is recommended. The second step in protocol development is the specification of the evidence needs and the methods that will be applied for answering the assessment questions and sub-questions, including uncertainty analysis. Five possible approaches to answering individual (sub-)questions are outlined: using evidence from scientific literature and study reports; using data from databases other than bibliographic; using expert judgement informally collected or elicited via semi-formal or formal expert knowledge elicitation processes; using mathematical/statistical models; and - not covered in this g
- Published
- 2023
49. Metabolism of the carcinogen alpha-asarone in liver microsomes
- Author
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Cartus, Alexander T. and Schrenk, Dieter
- Published
- 2016
- Full Text
- View/download PDF
50. Toxicodynamic Tests
- Author
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Schrenk, Dieter, Reichl, Franz-Xaver, editor, and Schwenk, Michael, editor
- Published
- 2014
- Full Text
- View/download PDF
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