Document Detail

Sorption Properties of the Human Stratum Corneum.
MedLine Citation:
PMID:  21346399     Owner:  NLM     Status:  Publisher    
Water sorption is important for the overall structure and function of keratinized tissues such as the human epidermal stratum corneum (SC). In this study we report on a gravimetric method for studying sorption properties of human SC, both from heel and female breast skin. Changes in mass were measured as the relative humidity was altered in steps under controlled environmental conditions. The possibility of hysteresis is also discussed. Furthermore, we have found that the sorption time constants show triphasic behaviour during absorption, but not during desorption. This behaviour is connected to the 3 different types of water present in the SC. Water also enters the SC much more rapidly compared to its exit at relative humidities <50%. Finally, the amount of time between sample preparation and onset of measurement seems to have an effect on the absorption rate, but less on the total amount of water absorbed.
G K Johnsen; L Norlen; O G Martinsen; S Grimnes
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-2-22
Journal Detail:
Title:  Skin pharmacology and physiology     Volume:  24     ISSN:  1660-5535     ISO Abbreviation:  -     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-2-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101188418     Medline TA:  Skin Pharmacol Physiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  190-198     Citation Subset:  -    
Copyright Information:
Copyright © 2011 S. Karger AG, Basel.
Department of Physics, University of Oslo, Oslo, Norway.
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