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  • Title: Molecular biology of botulinum neurotoxin serotype A: a cosmetic perspective.
    Author: Eapen BR.
    Journal: J Cosmet Dermatol; 2008 Sep; 7(3):221-5. PubMed ID: 18789058.
    Abstract:
    Cosmetic use of botulinum neurotoxin serotype A (BoNT/A) involves low doses of toxin administered for facial wrinkles and hyperhidrosis. The structural and functional properties of BoNT/A can affect the degree and duration of effect. Actively using the injected muscle is favorable as it exposes more receptors to BoNT/A. Divided doses of BoNT/A at an interval of more than 3 days may be longer lasting than single dose by blocking nascent neuronal sprouts. Antibodies are unlikely to be effective in BoNT/A neutralization because of the large area of receptor interaction. Several commonly used drugs including zinc and chloroquine can interact with BoNT/A, necessitating dosage adjustment for optimum effect. Serotype E (BoNT/E) can emerge as an antidote for BoNT/A for cosmetic use.
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