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ABSTRACT OF THE WEEK

Research in veterinary science
Volume 160 | Issue 0 (July 2023)

Dimethyl sulfoxide favors the emetic efficacy of lycorine in beagle dogs - a novel strategy for the treatment of poisoning.

Res Vet Sci. July 2023;160(0):11 - 17.
Ralf Regenthal1, Getu Abraham2
1 Division of Clinical Pharmacology, Rudolf Boehm Institute for Pharmacology and Toxicology, Medical Faculty, University of Leipzig, Härtelstrasse 16-18, 04107 Leipzig, Germany. Electronic address: ralf.regenthal@medizin.uni-leipzig.de.; 2 Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, University of Leipzig, An den Tierkliniken 15, 04103 Leipzig, Germany.
Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.

Abstract

Poisoning in small animals represents an ongoing hazard and therapeutic problem in veterinary medicine. Therapeutic induction of emesis in time enables a fast elimination of a toxic compound resulting in a shortened course of poisoning and a higher safety level thereafter, which decisively improves prognosis and treatment. Lycorine is a reliable emetic drug in beagle dogs without serious side effects thought to be more beneficial in tolerability and efficacy than the rarely used apomorphine. Therefore, this study investigates efficacy and tolerability of differently composed potential drug formulations of lycorine hydrochloride for s.c. administration in dogs as an emetic principle. By emesis response analysis four dimethyl sulfoxide (DMSO)-based active pharmaceutical ingredient (API) formulations were favored. Two of them (F5 and F6) qualified for further drug development. Both formulations ensure a safe pharmacologically induced emesis within about 30 min after injection, suitable for use as an in time decontaminant in acute poisoning of dogs. DMSO-based formulations were well tolerated and offer a novel promising strategy for treatment of poisoning.

Keywords
Dog; Drug formulation; Emetic drug; Lycorine; Poisoning;

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