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Heilmann, S.; Küchler, Sarah; Schäfer-Korting, Monika (2012): Morphine Metabolism in Human Skin Microsomes. In: Skin Pharmacology and Physiology, No. 6: pp. 319-322




For patients with severe skin wounds, topically applied morphine is an option to induce efficient analgesia due to the presence of opioid receptors in the skin. However, for topical administration it is important to know whether the substance is biotransformed in the skin as this can eventually reduce the concentration of the active agent considerably. We use skin microsomes to elucidate the impact of skin metabolism on the activity of topically applied morphine. We are able to demonstrate that morphine is only glucuronidated in traces, indicating that the biotransformation in the skin can be neglected when morphine is applied topically. Hence, there is no need to take biotransformation into account when setting up the treatment regimen. Copyright (C) 2012 S. Karger AG, Basel