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  • Title: Crisaborole: Phosphodiesterase inhibitor for treatment of atopic dermatitis.
    Author: Paton DM.
    Journal: Drugs Today (Barc); 2017 Apr; 53(4):239-245. PubMed ID: 28492291.
    Abstract:
    Atopic dermatitis (AD) is an extremely common condition affecting as many as 10-20% of children and 2-10% of adults. A particularly distressing symptom of AD is pruritus. One of the important aspects of AD is inflammation associated with increased activity of phosphodiesterase 4 (PDE4), resulting in decreased intracellular levels of cyclic adenosine monophosphate, which in turn causes increased production of inflammatory cytokines. Crisaborole was developed as a small-molecule, boron-based, selective PDE4 inhibitor that can be used topically. Clinical trials have demonstrated its efficacy in treating patients with mild to moderate AD, resulting in significant relief of pruritus. Unlike PDE4 inhibitors that act systemically, crisaborole does not cause significant gastrointestinal adverse effects. The most common adverse effect has been temporary stinging and burning in about 4% of patients upon application of the 2% ointment. To date there is no evidence of atrophy, telangiectasia or hypopigmentation resulting from its use. Crisaborole is the first topically applied PDE4 inhibitor to be approved by the FDA for use in AD.
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