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Gap Junctional Intercellular Communication: A Functional Biomarker to Assess Adverse Effects of Toxicants and Toxins, and Health Benefits of Natural Products
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Cross-talk between xenobiotic detoxication and other signalling pathways: clinical and toxicological consequences

J M Pascussi1, S Gerbal-Chaloin, L Drocourt

  • 1INSERM U632, Hepatic Physiopathology, Montpellier F-34293, France.

Xenobiotica; the Fate of Foreign Compounds in Biological Systems
|January 28, 2005
PubMed

Insights

Xenobiotic metabolism is regulated by complex signaling networks involving nuclear receptors. Understanding these interactions reveals how foreign compounds cause adverse effects and how disease impacts drug metabolism.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Pharmacology

Background:

  • Nuclear receptors and transcription factors regulate genes for xenobiotic metabolism and transport.
  • These regulatory systems are interconnected with broader cellular networks.

Purpose of the Study:

  • To investigate the intricate regulatory networks governing xenobiotic metabolism.
  • To understand the functional interactions between xenobiotic signaling and other nuclear receptor pathways.

Main Methods:

  • Review of recent investigations on nuclear receptors and transcription factors.
  • Analysis of signaling pathways involving glucocorticoid and estrogen receptors, hypoxia-inducible factor, and vitamin D receptor.

Main Results:

  • Xenobiotic-dependent signaling pathways are embedded within complex regulatory networks.
  • These networks include receptors controlling cholesterol/bile salt homeostasis and liver differentiation.
  • Functional interferences between these pathways were identified.

Conclusions:

  • The findings provide insights into how xenobiotics can cause adverse effects.
  • Understanding these interactions clarifies how physiopathological stimuli influence xenobiotic metabolism.

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