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Psicothema was founded in Asturias (northern Spain) in 1989, and is published jointly by the Psychology Faculty of the University of Oviedo and the Psychological Association of the Principality of Asturias (Colegio Oficial de Psicología del Principado de Asturias).
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Psicothema, 2009. Vol. Vol. 21 (nº 4). 528-530




The effect of amitriptyline on inhibitory avoidance in mice is dose-dependent

Andrés Parra, Concepción Vinader-Caerols, Aránzazu Ferrer-Añó, Adoración Urquiza and Santiago Monleón

Universidad de Valencia

The purpose of the present work was to study the dose-effect relationship of the antidepressant amitriptyline on inhibitory avoidance in male and female mice. Subjects received physiological saline or 2.5, 5, 10 or 20 mg/kg of amitriptyline hydrochloride 30 min before the training phase, and were subjected to the test phase 24 h later. Results showed a clear impairing effect of amitriptyline on inhibitory avoidance in both male and female mice, and that the effect is dose-dependent.

El efecto de la amitriptilina sobre la evitación inhibitoria en ratones es dependiente de dosis. El propósito del presente trabajo fue estudiar la relación dosis-efecto del antidepresivo amitriptilina sobre la evitación inhibitoria en ratones machos y hembras. Los sujetos recibieron suero salino o 2.5, 5, 10 ó 20 mg/kg de clorhidrato de amitriptilina 30 min antes de la fase de entrenamiento, y fueron sometidos a la fase de test 24 h más tarde. Los resultados mostraron un claro efecto deteriorante de la amitriptilina sobre la evitación inhibitoria tanto en los ratones machos como en las hembras, y que el efecto es dependiente de dosis.

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