Comparación de los efectos del D-004, imipramina y sertralina en el modelo de nado forzado en ratones / Comparative effects of D-004, Imipramine and Sertraline in the forced swimming test in mice

Introducción: La finasterida, inhibidor de la 5 a-reductasa, se emplea en el tratamiento de la hiperplasia prostática benigna, y ocasiona entre sus efectos adversos un aumento de cuadros de depresión. El D-004 es un extracto lipídico extraído a partir del fruto de la palma real (Roystonea regia), inhibe la 5 a-reductasa y previene la hiperplasia prostática benigna, y muestra un efecto antidepresivo moderado en el ensayo de nado forzado y suspensión por la cola. Objetivo: comparar el efecto del D-004 con la imipramina y la sertralina sobre la duración de las conductas de inmovilidad, nado y escalado en el ensayo de nado forzado. Métodos: se distribuyeron los ratones en ocho grupos: control (vehículo), tres tratados con D-004 (100, 250 y 500 mg/kg), dos con sertralina y dos con imipramina (30 y 50 mg/kg) respectivamente. Estos se colocaron en un cilindro de cristal que contenía agua a una altura de 6 cm y se cuantificaron las conductas. Resultados: la administración oral de D-004 (100, 250 y 500 mg/kg) durante 14 días redujo significativamente el tiempo de inmovilidad con respecto al grupo control (17, 22 y 25 porciento) y aumentó significativamente la conducta de nado en 1,58, 1,68 y 1,74 veces. Este efecto resulta moderado (25 porciento) comparado con las reducciones alcanzadas por la sertralina y la imipramina (³ 60 porciento). Las dosis mayores (250 y 500 mg/kg) ocasionaron incrementos de la conducta de escalado, 2,79 y 3,55 veces superiores a la del grupo control, lo que mostró semejanza con la imipramina, aunque con una menor eficacia. Conclusiones: el D-004 ejerce un moderado efecto antidepresivo, lo que pudiera contribuir al manejo de los pacientes con hiperplasia prostática benigna en los cuales se informa coincidencia de cuadros depresivos

Introduction: Finasteride is a 5 a-reductase inhibitor to treat benign prostatic hyperplasia (BPH) and one of the adverse effects is the increase of depressive symptoms. D-004 is a lipid extract from the real palm fruit (Roystonea regia) that is effective to prevent prostatic hyperplasia by inhibiting 5 a-reductase and shows moderate antidepressant effects in the forced swimming test (FST) and tail suspension test. Objective: to compare the effects of D-004, Imipramine and Sertraline on the duration of behaviours under conditions of immobility, swimming and climbing in the forced swimming test. Methods: mice were randomly distributed in 8 groups: control (vehicle), 3 treated with D-004 (100, 250 and 500 mg/kg), 2 with Sertraline and 2 with Imipramine (30 and 50 mg/kg) respectively. Mice were placed in a glass cylinder containing 6 cm high column of water and their behaviours were quantified. Results: oral administration of D-004 (100, 250 and 500 mg/kg) during 14 days reduced the length of time of immobility with respect to the control group (17, 22 and 25 percent), and significantly increased the behaviours at swimming by 1.58, 1.68 and 1.74 times. This is a moderate effect (25 percento) if compared with Sertraline and Imipramine (³ 60 percent) The doses of 250 and 500 mg/kg showed that climbing behaviours were 2.79 and 3.55 times higher than the control group. The results were similar to those of Imipramine but less effective. Conclusions: D-004 showed moderate antidepressant effect. This fact could help in the treatment of patients with benign prostatic hyperplasia, who reported similar depressive status

Spectrophotometric determination of imipramine and promazine through ion-pair formation with molybdenum [V] and thio-cyanate

A new procedure for determining imipramine and promazine by forming ion-pairs with molybdenum [V]-thiocyanate complex is studied. The method consists of extracting the ion-pair formed into dichloromethane from hydrochlorid acid medium which is orange-red in color. The ion- pair has an absorption maximum at 472 nm with molar absorptivities of 1.27 x 104 and 1.64 x 104 M mole-1 cm-1 for imipramine and promazine hydrochlorides, respectively. The ion-pair is stable for over one week at room temperature [25C]. Bent and French's method indicated 1: 4: 2 composition for molybdenum [V]-thiocyanate- imipramine or promazine ion-pair. The method obeys Beer's law in the concentration range 1.0-30.0 mug ml-1 of imipramine hydrochloride and 0.8-24.0 mug ml-1 of promazine hydrochloride. The proposed method can be applied to the determination of imipramine and promazine hydrochlorides in pharmaceutical preparations