Related Experiment Videos
Structural determinants associated with risk of human developmental toxicity
M Ghanooni1, D R Mattison, Y P Zhang
1Department of Environmental and Occupational Health, Graduate School of Public Health, University of Pittsburgh, PA 15261, USA.
American Journal of Obstetrics and Gynecology
|April 1, 1997
Summary
This study identified 17 structural determinants (biophores) linked to human developmental toxicity using the MULTICASE (multiple computer-automated structure evaluation) model. This computational approach offers a rapid method for predicting chemical hazards to embryonic and fetal development.
Area of Science:
- Toxicology
- Computational Chemistry
- Developmental Biology
Background:
- Assessing developmental toxicity of chemicals is crucial but challenging.
- Only a small fraction of commercial chemicals are evaluated for developmental hazards.
- There is a need for efficient methods to identify potential developmental toxicants.
Purpose of the Study:
- To identify structure-activity relationships predicting human developmental toxicity.
- To develop an inexpensive and rapid method for hazard identification.
- To utilize the MULTICASE algorithm for predicting chemical risks to human development.
Main Methods:
- Employed the MULTICASE (multiple computer-automated structure evaluation) algorithm.
- Analyzed developmental toxicity data from the Teratogen Information System and FDA guidelines.
- Identified specific chemical substructures (biophores) associated with developmental toxicity.
Main Results:
- Identified 17 biophores associated with human developmental toxicity.
- The model achieved high concordance (99%), sensitivity (100%), and specificity (98%) on the learning set.
- Cross-validation showed mean concordance of 73%, sensitivity of 63%, and specificity of 79%.
Conclusions:
- The MULTICASE structure-activity model effectively identifies potential human developmental toxicants.
- This model serves as a valuable tool for prioritizing chemicals for further investigation.
- It provides a foundation for mechanistic studies into developmental toxicity.