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Electroporation-delivered transdermal neostigmine in rats: equivalent action to intravenous administration

Authors Berkó S, Szűcs K, Balázs B, Csányi E, Varju G, Sztojkov-Ivanov A, Budai-Szűcs M, Bóta J, Gaspar R

Received 22 December 2015

Accepted for publication 17 February 2016

Published 19 May 2016 Volume 2016:10 Pages 1695—1701


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Prof. Dr. Wei Duan

Szilvia Berkó,1,* Kálmán F Szűcs,2,* Boglárka Balázs,1,3 Erzsébet Csányi,1 Gábor Varju,4 Anita Sztojkov-Ivanov,2 Mária Budai-Szűcs,1 Judit Bóta,2 Róbert Gáspár2

1Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Szeged, Szeged, Hungary; 2Department of Pharmacodynamics and Biopharmacy, Faculty of Pharmacy, University of Szeged, Szeged, Hungary; 3Gedeon Richter Plc., Budapest, 4Dr Derm Clinic of Anti-Aging Dermatology, Aesthetic Laser and Plastic Surgery, Budapest, Hungary

*These authors contributed equally to this work

Purpose: Transdermal electroporation has become one of the most promising noninvasive methods for drug administration, with greatly increased transport of macromolecules through the skin. The cecal-contracting effects of repeated transdermal electroporation delivery and intravenous administration of neostigmine were compared in anesthetized rats.
Methods: The cecal contractions were detected with implantable strain gauge sensors, and the plasma levels of neostigmine were followed by high-performance liquid chromatography.
Results: Both intravenously and EP-administered neostigmine (0.2–66.7 µg/kg) increased the cecal contractions in a dose-dependent manner. For both the low doses and the highest dose, the neostigmine plasma concentrations were the same after the two modes of administration, while an insignificantly higher level was observed at a dose of 20 µg/kg after intravenous administration as compared with the electroporation route. The contractile responses did not differ significantly after the two administration routes.
Conclusion: The results suggest that electroporation-delivered neostigmine elicits action equivalent to that observed after intravenous administration as concerning both time and intensity. Electroporation permits the delivery of even lower doses of water-soluble compounds through the skin, which is very promising for clinical practice.

Keywords: transdermal, electroporation, neostigmine, smooth muscle, contraction, plasma level

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