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  • Title: Treatment of psoriasis with a new combination of calcipotriol and betamethasone dipropionate: a flow cytometric study.
    Author: van Rossum MM, van Erp PE, van de Kerkhof PC.
    Journal: Dermatology; 2001; 203(2):148-52. PubMed ID: 11586014.
    Abstract:
    BACKGROUND: Calcipotriol and corticosteroids are established topical antipsoriatics. Previous studies have shown that combined therapy with calcipotriol and betamethasone dipropionate was more effective than monotherapy. In the present study, a recently developed combination product of calcipotriol and betamethasone dipropionate was compared with both monotherapies and the vehicle. METHODS: Twenty-five psoriatic patients were treated twice daily with the combination product, monotherapy or vehicle during 4 weeks. Skin biopsies, taken before and after treatment, were analysed using a multi-parameter flow cytometric method. Parameters of inflammation (vimentin-positive cells), normal differentiation (keratin-10-positive cells) and proliferation (cells in SG(2)M-phase) were assessed. RESULTS: Flow cytometric analysis showed that the combination product turned out to be more effective in reducing inflammation compared with the other treatments. Restoration of normal differentiation was more advanced in patients treated with the combination product or betamethasone dipropionate compared to the vehicle. The highest number of normally differentiated cells was seen after use of the combination product. All treatments, except for the vehicle, decreased hyperproliferation. CONCLUSIONS This study shows that the combination product is a valuable new approach to the treatment of psoriasis.
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