Document Detail

Basal cell proliferation in female SKH-1 mice treated with alpha- and beta-hydroxy acids.
MedLine Citation:
PMID:  11509029     Owner:  NLM     Status:  MEDLINE    
Alpha- and beta-hydroxy acids are compounds that have been used extensively in cosmetic and dermatological formulations. Clinical and qualitative effects of alpha- and beta-hydroxy acids have been well characterized, but little is known about their mechanism of action or acute and chronic biochemical effects. In the present study, we examined the acute proliferative effects of glycolic and salicylic acids on cell proliferation in the epidermis of SKH-1 female mice, using BrdU incorporation as a marker of epidermal proliferation. In preliminary experiments, we observed an increase in the rate of proliferation after 3 days of treatment with 10% glycolic acid-containing cream and this was sustained throughout a 6.5-week (treatment 5 days/week) time course compared with untreated control animals. After each treatment with cream containing glycolic acid there was a wave of proliferation that was maximal 12 to 16 h (significant at p < 0.05) after treatment, followed by a subsequent increase in epidermal thickness at 18 to 20 h (significant at p < 0.05). The effects of the concentration and pH level of glycolic acid- and salicylic acid-containing creams on the rate of proliferation and increases in skin thickness in SKH-1 epidermis were also investigated. We observed a dose-dependent increase in epidermal proliferation of animals treated with either glycolic or salicylic acid. A similar time-dependent response was observed in the epidermal thickness in animals treated with salicylic acid, but not with glycolic acid. Differences in pH (3.5 or 4.0) had no significant effect on either epidermal proliferation or skin thickness. The data that we present here should be useful in characterizing not only the beneficial but also the adverse effects that occur following acute or chronic usage of alpha-hydroxy acids.
R L Sams; L H Couch; B J Miller; C V Okerberg; A Warbritton; W G Wamer; J Z Beer; P C Howard
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Toxicology and applied pharmacology     Volume:  175     ISSN:  0041-008X     ISO Abbreviation:  Toxicol. Appl. Pharmacol.     Publication Date:  2001 Aug 
Date Detail:
Created Date:  2001-08-17     Completed Date:  2001-09-06     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0416575     Medline TA:  Toxicol Appl Pharmacol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  76-82     Citation Subset:  IM    
Copyright Information:
Copyright 2001 Academic Press.
Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food & Drug Administration, Jefferson, Arkansas 72079, USA.
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MeSH Terms
Cell Division / drug effects
Cosmetics / chemistry
Dose-Response Relationship, Drug
Epidermis / cytology,  drug effects*,  physiology
Glycolates / pharmacology*
Keratolytic Agents / pharmacology*
Salicylic Acid / pharmacology*
Reg. No./Substance:
0/Cosmetics; 0/Glycolates; 0/Keratolytic Agents; 69-72-7/Salicylic Acid; 79-14-1/glycolic acid

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