The Official Journal of the Turkish Society of Algology
ISSN 1300-0012 E-ISSN 2458-9446

Murat Büyükşekerci, Hülya Gültekin

Erciyes University Medical Faculty, Department Of Pharmacology, Kayseri, Turkey

Abstract

In this study, we aimed to reveal the interaction between the tricyclic antidepressant amitriptyline and a1-adrenoceptor antagonist prazosin in mice by using an analgesiometric device hot-plate. Amitriptyline (10 mg/kg) has analgesic effect as expected. Neither of the prazosin doses (0.1, 0.2, 0.5, 1 mg/kg) displayed analgesic effect alone. The combination of lower doses of prazosin (0.1, 0.2, 0.5 mg/kg) with amitriptyline (10 mg/kg) potentiated the antinociceptive effect of this drug. However, the relatively higher dose of prazosin (1 mg/kg) did not effect amitriptyline analgesia. Thus we conclude that the antinociceptive effect of amitriptyline is potentiated by low doses of prazosin.