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Clinical Applications of Non-Antimicrobial Tetracyclines in Dermatology.

Pharmacol Res. 2010 Oct 8;

Authors: Monk E, Shalita A, Siegel D

There are many proposed non-antimicrobial actions of tetracyclines. The pathways affected by these medications, such as those involving matrix metalloproteinase (MMP) activity, are often overexpressed in various dermatologic conditions. Non-antimicrobial effects of tetracyclines that are important in dermatology include inflammatory cytokine regulation, inhibition of leukocyte chemotaxis and activation, and anti-oxidation. Dermatologists have utilized the non-antimicrobial benefits of using tetracycline, through their success in treating disorders that do not have a primary infectious etiology such as rosacea. Even in acne, there is believed to be overactive inflammation to a normally commensal organism which is inhibited by tetracyclines. These medications have also been reported as successful in cases of less common skin conditions, such as pyoderma gangrenosum and bullous pemphigoid, both of which involve inflammation and dermal destruction which are inhibited by tetracyclines. In the Dermatology section, the pathologic mechanisms of several dermatologic conditions are reviewed, followed by evidence of how tetracyclines and its derivatives, including chemically modified tetracyclines (CMTs) affect these pathways. Clinical testing of sub-antimicrobial doxycycline, in both 20mg twice daily and 40mg once daily (controlled release; 30mg immediate release, 10mg delayed release) forms, in rosacea and acne is reviewed as evidence that non-antimicrobial actions are valuable for treatment. Chemically modifies tetracycline-3 (CMT-3) for Kaposi 's sarcoma is highlighted as the only clinical evidence available for CMTs. Certain evidence of success using antimicrobial tetracyclines in inflammatory conditions of the skin is reviewed as well, because they are likely working through non-antimicrobial properties. Finally, dermatologic side effects of non-antimicrobial tetracyclines are assessed.

PMID: 20937386 [PubMed - as supplied by publisher]

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?tmpl=NoSidebarfile&db=PubMed&cmd=Retrieve&list_uids=20937386&dopt=Abstract = URL to article

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