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What is toxicology and how does toxicity occur?
1Walther-Straub-Institute for Pharmacology and Toxicology, Nussbaumstrasse 26, München D-80336, Germany. mueckter@lrz.uni-muenchen.de
Best Practice & Research. Clinical Anaesthesiology
|May 20, 2003
Summary
Modern toxicology views toxicity as a drug-host interaction, not just poison science. Understanding host genetics and proteins is key to predicting adverse drug reactions and assessing chemical risks.
Area of Science:
- Toxicology
- Pharmacology
- Genetics
Background:
- Toxicology has evolved from the 'science of poisons' to a broader study of chemical interactions with biological systems.
- Modern toxicology emphasizes the host's response to xenobiotics, moving beyond an anthropocentric view.
- Adverse drug effects result from specific interactions between chemical agents and the exposed biological system.
Purpose of the Study:
- To redefine toxicology beyond its traditional scope.
- To highlight the importance of host factors in drug toxicity.
- To explore the role of toxicogenetics and proteomics in understanding xenobiotic interactions.
Main Methods:
- Focusing on host-centric approaches in toxicological research.
- Investigating toxicogenetics to explain variations in host response to xenobiotics.
- Analyzing the proteome to understand cellular interactions with drugs and chemicals.
Main Results:
- Toxicity is now understood as an outcome of specific drug-host interactions.
- Clinically relevant genetic polymorphisms and gene defects influencing drug response are increasingly identified.
- The proteome plays a crucial role in determining how biological systems interact with xenobiotics.
Conclusions:
- Toxicology's scope has expanded to include ecosystems and diverse biological systems.
- Host genetic makeup and protein expression are critical determinants of xenobiotic toxicity.
- Structure-activity relationship studies are vital for predicting and assessing risks associated with chemical exposure.