Dose-dependent noradrenergic and serotonergic properties of venlafaxine in animal models indicative of antidepressant activity

被引:163
作者
Redrobe, JP [1 ]
Bourin, M [1 ]
Colombel, MC [1 ]
Baker, GB [1 ]
机构
[1] Fac Med, GIS Medicament, F-44035 Nantes, France
关键词
venlafaxine; noradrenaline; serotonin; animal model of depression;
D O I
10.1007/s002130050638
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
The present study was undertaken to investigate the roughly the preclinical psyche pharmacological profile of venlafaxine, testing a wide range of doses in animal models indicative of antidepressant-like effects. Venlafaxine was found to be active in mouse forced swimming test (at 8, 16, 32 and 64 mg/kg) and to increase spontaneous locomotor activity (at 16, 32 and 64 mg/kg). Venlafaxine antagonised apomorphine-induced (16 mg/kg) hypothermia (at 2, 4, 8, 16, 32 and 64 mg/kg). Pretreatment with PCPA significantly attenuated the anti-immobility effects of venlafaxine (8 and 16mg/kg; P<0.01) in the mouse forced swimming test. Venlafaxine at a dose of 32 mg/kg remained active, despite PCPA pretreatment. DSP-4 significantly attenuated the anti-immobility effects of venlafaxine (16 mg/kg; P < 0.05), whereas venlafaxine at 32 mg/kg remained active, despite DSP-LF pretreatment. Venlafaxine was active in the forced swimming test when administered at sub-effective doses in combination with (+/-) pindolol (venlafaxine: I and 2 mg/kg), RU 24969 (venlafaxine: I, 2 and 4 mg/kg), 8-OH-DPAT (venlafaxine: 4 mg/kg), clonidine (venlafaxine: 1, 2 and 4 mg/kg), lithium (venlafaxine: 1, 2, and 4 mg/kg) and quinine (venlafaxine: 1 and 2 mg/kg). Prior administration with NAN-190 antagonised the anti-immobility effects of venlafaxine (8, 16 and 32 mg/kg). Interaction studies did not induce changes in locomotor activity. The results of the present study indicated that, at low doses, venlafaxine inhibited serotonin reuptake, while at higher doses it inhibited both serotonin and noradrenaline reuptake.
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页码:1 / 8
页数:8
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