Document Detail


The in-vitro antimicrobial effects of azelaic acid upon Propionibacterium acnes strain P37.
MedLine Citation:
PMID:  1726169     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The in-vitro antimicrobial activity of azelaic acid a new topical acne treatment, upon Propionibacterium acnes strain P37 was studied. In phosphate buffer at pH 6.0 500 mM azelaic acid had bactericidal activity whilst the addition of nutrients reduced susceptibility. Bactericidal activity was greatly enhanced by reducing the pH to 5.6. In a simple defined medium growth was inhibited by 100 microM azelaic acid. The accumulation of 14C azelaic acid was pH and temperature dependent with maximum uptake occurring at pH 4.6, 30 degrees C. Valinomycin, nigericin and CCCP (membrane-active inhibitors of energy transduction) inhibited uptake and azelaic acid was not accumulated by non-viable cells. The degradation of azelaic acid was repressed by glucose, and acetic acid was the major end-product of azelaic acid degradation in glucose depleted media. The incorporation of radiolabelled precursors into protein, DNA and RNA were inhibited in a dose dependent manner, and 50% inhibition occurred at 313, 3639 and 9226 microM respectively. The synthesis of proteins was shown to be significantly more sensitive to the action of azelaic acid than both RNA and DNA synthesis.
Authors:
R A Bojar; K T Holland; W J Cunliffe
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of antimicrobial chemotherapy     Volume:  28     ISSN:  0305-7453     ISO Abbreviation:  J. Antimicrob. Chemother.     Publication Date:  1991 Dec 
Date Detail:
Created Date:  1992-06-30     Completed Date:  1992-06-30     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7513617     Medline TA:  J Antimicrob Chemother     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  843-53     Citation Subset:  IM    
Affiliation:
Department of Microbiology, University of Leeds, UK.
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MeSH Terms
Descriptor/Qualifier:
Bacterial Proteins / biosynthesis
Culture Media
DNA, Bacterial / biosynthesis
Dermatologic Agents / metabolism,  pharmacology*
Dicarboxylic Acids / metabolism,  pharmacology*
Hydrogen-Ion Concentration
Microbial Sensitivity Tests
Propionibacterium acnes / drug effects*,  growth & development,  metabolism
RNA, Bacterial / biosynthesis
Species Specificity
Temperature
Chemical
Reg. No./Substance:
0/Bacterial Proteins; 0/Culture Media; 0/DNA, Bacterial; 0/Dermatologic Agents; 0/Dicarboxylic Acids; 0/RNA, Bacterial; 123-99-9/azelaic acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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