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  • Title: Pharmacokinetics of the transdermal delivery of benfotiamine.
    Author: Zhu Z, Varadi G, Carter SG.
    Journal: Acta Diabetol; 2016 Apr; 53(2):317-22. PubMed ID: 26141141.
    Abstract:
    AIMS: Accumulation of advanced glycation endpoints is a trigger to the development of diabetic peripheral neuropathy, which is a common complication of diabetes. Oral administration of benfotiamine (BFT) has shown some preclinical and clinical promise as a treatment for diabetic peripheral neuropathy. The purpose of this study was to evaluate the method of transdermal delivery of BFT as a possible, viable route of administration for the treatment of diabetic peripheral neuropathy. METHODS: A single application of 10 mg of BFT was given to guinea pigs topically. The levels of thiamine (T), thiamine monophosphate, thiamine diphosphate, S-benzoylthiamine and BFT were measured in the blood, skin and muscle at different time points within 24 h. RESULTS: At the 24-h time point, following the single BFT dose, the T level was increased 10× in the blood, more than 7× in the skin and almost 4× in the muscle compared to the untreated animals. The total T content (total) was increased 7× in the blood, 17× in the skin and 3× in the muscle compared to the untreated animals. CONCLUSIONS: This strong increase in the tissue levels of T and the associated metabolic derivatives levels found in the blood and local tissues following a single dose indicate that topically applied BFT may be a viable and advantageous delivery method for the treatment of diabetic peripheral neuropathy.
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