Related Experiment Videos
Epidermal toxicity of disinfectants
J A Hess1, J A Molinari, M J Gleason
1University of Detroit School of Dentistry.
American Journal of Dentistry
|February 1, 1991
Summary
Repeated exposure to disinfectants like bleach and glutaraldehyde can cause skin toxicity in mice, leading to lesions and erosion. Iodophors showed the mildest epithelial reactions among the tested chemicals.
Area of Science:
- Toxicology
- Dermatology
- Biomedical Science
Background:
- Disinfectants are crucial for infection control in healthcare and research settings.
- Understanding the potential epithelial toxicity of disinfectants with repeated exposure is vital for safety protocols.
Purpose of the Study:
- To evaluate the epithelial toxicity of various disinfectant chemicals following repeated topical application.
- To compare the relative severity of skin reactions induced by different disinfectant classes.
Main Methods:
- Experimental ICR/CD-1 mice underwent abdominal shaving and depilation.
- Disinfectants (iodophors, bleach, phenols, phenolic/alcohols, glutaraldehydes) were sprayed repeatedly on exposed skin over two days.
- Control groups received distilled water spray.
- Skin changes were assessed macroscopically and histologically.
Main Results:
- All tested disinfectants induced epidermal changes, including thickening, hardening, and lesions.
- Histological examination revealed hypertrophy and epithelial erosion, with occasional inflammation and dermal collagen degeneration.
- Glutaraldehyde sprays caused significant tissue destruction, while iodophors induced the mildest reactions.
- Immersion glutaraldehyde sterilants/disinfectants resulted in marked tissue destruction.
Conclusions:
- Repeated topical application of disinfectants can lead to significant epithelial toxicity.
- The severity of toxicity varies among disinfectant classes, with glutaraldehyde being the most potent and iodophors the least.
- These findings highlight the importance of considering disinfectant concentration, application method, and exposure duration to minimize adverse effects.