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Human skin buffering capacity against a reference base sodium hydroxide: in vitro model.
1Department of Dermatology, University of California, School of Medicine, San Francisco, California 94143-0989, USA.
Cutaneous and Ocular Toxicology
|November 28, 2008
Summary
This study introduces an in vitro skin model to evaluate buffering capacity against irritants like sodium hydroxide (NaOH). The model quantifies how skin
Area of Science:
- Dermatology
- Biochemistry
- Toxicology
Background:
- Assessing skin's buffering capacity is crucial for understanding irritant-induced damage.
- In vitro models offer a controlled environment for studying skin's response to chemical challenges.
- Sodium hydroxide (NaOH) serves as a model base for evaluating alkaline irritant effects.
Purpose of the Study:
- To evaluate an in vitro skin model for assessing buffering capacity against topical irritants.
- To investigate the relationship between sodium hydroxide concentration and skin's buffering response.
- To understand base-induced skin damage and buffering mechanisms.
Main Methods:
- An in vitro skin model was developed and utilized.
- Sodium hydroxide (NaOH) solutions of varying concentrations (0.1N, 0.05N, 0.025N) were applied topically.
- De-ionized water and unexposed skin served as controls.
Main Results:
- The in vitro model allowed for quantitative estimation of skin's buffering capacity.
- A rapid diminution in buffering capacity was observed.
- The study explored the concentration-dependent buffering response of skin to NaOH.
Conclusions:
- The in vitro model shows promise as an introduction to clinical human models for skin irritancy studies.
- The model can quantitatively assess buffering capacity and its changes upon irritant exposure.
- Further research can elucidate mechanisms for preventing and treating base-induced skin damage.
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