Related Experiment Videos
The endoplasmic reticulum in xenobiotic toxicity
Alastair E Cribb1, Mathieu Peyrou, Shanmugam Muruganandan
1Laboratory of Comparative Pharmacogenetics, Department of Biomedical Sciences, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, PEI, Canada. acribb@upei.ca
Drug Metabolism Reviews
|November 1, 2005
Summary
The endoplasmic reticulum (ER) is crucial in xenobiotic toxicity, impacting drug metabolism and cellular damage. This review highlights the ER's role in cell death pathways following exposure to foreign compounds.
Area of Science:
- Toxicology
- Cell Biology
- Biochemistry
Background:
- The endoplasmic reticulum (ER) is central to cellular functions, including xenobiotic metabolism.
- It houses cytochrome P450 enzymes and conjugating enzymes critical for detoxification and bioactivation.
- The ER can be a direct target of reactive intermediates, leading to toxicity.
Purpose of the Study:
- To review the ER's role in molecular events causing cell death after xenobiotic exposure.
- To discuss the ER's significance in hepatic and renal toxicity.
Main Methods:
- Literature review of studies on endoplasmic reticulum function and xenobiotic toxicity.
- Analysis of data linking ER stress proteins to xenobiotic-induced cell death.
- Examination of evidence for ER involvement in organ-specific toxicity.
Main Results:
- The ER's cytochrome P450 enzymes are key in xenobiotic metabolism and potential toxicity.
- ER stress proteins (e.g., GRP78) are induced by xenobiotics and involved in cell death.
- The ER plays a significant role in both liver and kidney toxicity.
Conclusions:
- The endoplasmic reticulum is a critical cellular organelle in xenobiotic toxicity.
- Understanding ER-mediated pathways is essential for predicting and mitigating xenobiotic-induced organ damage.
- ER stress response is a key factor in xenobiotic-induced cell death.