Human exposure to synthetic endocrine disrupting chemicals (S-EDCs) is generally negligible as compared to natural compounds with higher or comparable endocrine activity : How to evaluate the risk of the S-EDCs?

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2020
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Autrup, Herman
Barile, Frank A.
Berry, Sir Colin
Blaauboer, Bas J.
Boobis, Alan
Bolt, Herrmann
Borgert, Christopher J.
Dekant, Wolfgang
Greim, Helmut
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Zusammenfassung

Theoretically, both synthetic endocrine disrupting chemicals (S-EDCs) and natural (exogenous and endogenous) endocrine disrupting chemicals (N-EDCs) can interact with endocrine receptors and disturb hormonal balance. However, compared to endogenous hormones, S-EDCs are only weak partial agonists with receptor affinities several orders of magnitude lower. Thus, to elicit observable effects, S-EDCs require considerably higher concentrations to attain sufficient receptor occupancy or to displace natural hormones and other endogenous ligands.

Significant exposures to exogenous N-EDCs may result from ingestion of foods such as soy-based diets, green tea and sweet mustard. While their potencies are lower as compared to natural endogenous hormones, they usually are considerably more potent than S-EDCs.

Effects of exogenous N-EDCs on the endocrine system were observed at high dietary intakes. A causal relation between their mechanism of action and these effects is established and biologically plausible. In contrast, the assumption that the much lower human exposures to S-EDCs may induce observable endocrine effects is not plausible. Hence, it is not surprising that epidemiological studies searching for an association between S-EDC exposure and health effects have failed.

Regarding testing for potential endocrine effects, a scientifically justified screen should use in vitro tests to compare potencies of S-EDCs with those of reference N-EDCs. When the potency of the S-EDC is similar or smaller than that of the N-EDC, further testing in laboratory animals and regulatory consequences are not warranted.

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570 Biowissenschaften, Biologie
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Endocrine disruption; Risk characterisation; Testing
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ISO 690AUTRUP, Herman, Frank A. BARILE, Sir Colin BERRY, Bas J. BLAAUBOER, Alan BOOBIS, Herrmann BOLT, Christopher J. BORGERT, Wolfgang DEKANT, Daniel R. DIETRICH, Helmut GREIM, 2020. Human exposure to synthetic endocrine disrupting chemicals (S-EDCs) is generally negligible as compared to natural compounds with higher or comparable endocrine activity : How to evaluate the risk of the S-EDCs?. In: Chemico-Biological Interactions. Elsevier. 2020, 326, 109099. ISSN 0009-2797. eISSN 1872-7786. Available under: doi: 10.1016/j.cbi.2020.109099
BibTex
@article{Autrup2020-08-01Human-50234,
  year={2020},
  doi={10.1016/j.cbi.2020.109099},
  title={Human exposure to synthetic endocrine disrupting chemicals (S-EDCs) is generally negligible as compared to natural compounds with higher or comparable endocrine activity : How to evaluate the risk of the S-EDCs?},
  volume={326},
  issn={0009-2797},
  journal={Chemico-Biological Interactions},
  author={Autrup, Herman and Barile, Frank A. and Berry, Sir Colin and Blaauboer, Bas J. and Boobis, Alan and Bolt, Herrmann and Borgert, Christopher J. and Dekant, Wolfgang and Dietrich, Daniel R. and Greim, Helmut},
  note={Article Number: 109099}
}
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