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  • Title: The Wound Healing Properties of Betulin from Birch Bark from Bench to Bedside.
    Author: Scheffler A.
    Journal: Planta Med; 2019 May; 85(7):524-527. PubMed ID: 30856673.
    Abstract:
    With central European approval in January 2016 for a betulin-oleogel (Episalvan), used to accelerate wound closure in partial thickness wounds, the herbal active ingredient triterpene dry extract (betulin), from birch bark, was introduced into therapy for the first time. Clinical evidence of accelerated wound healing was provided in a new study design by means of intraindividual comparison of split-thickness skin graft donor wounds and burn wounds. Clinical results of a phase II study evidencing accelerated wound healing in the rare disease epidermolysis bullosa are also available, and a pivotal multi-centre phase III study is currently being conducted. The mode of action affects all three phases of wound healing (inflammation, migration, and differentiation), and it has been possible, in some cases, to shed light on this down to the molecular level. After temporary stimulation of the inflammatory phase, the keratinocytes migrate more rapidly to the wound closure and, finally, epidermal differentiation is stimulated. With this project, we have shown that scientifically founded new developments in phytotherapy are possible in Europe. The active ingredient is new and its indication is for the first time clearly proven in studies. Betulin-oleogel is the first drug of its indication and is patented until 2030. In addition, it is the first phytotherapeutic agent in surgery, and thus opens up a new therapeutic area for phytotherapy. The birch bark contains about 22% betulin in its cork tissue, meaning that the active ingredient is sustainably available from Northern Europe's wood-processing industry on a scale of several 100,000 t/a.
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