| Bioactivity | Trimipramine maleate is a 5-HT receptor antagonist, with pKi binding values of 6.39, 8.10, 4.66 for 5-HT1C, 5-HT2 and 5-HT1A, respectively[1]. Trimipramine maleate is also a potent and selective inhibitor targeting human noradrenaline (hNAT), serotonin (hSERT) and organic cation transporters (hOCT1, hOCT2) with IC50 values of 4.99 μM, 2.11 μM, 3.72 μM, 8.00 μM, respectively[2]. Trimipramine maleate has vascular activity and anxiolytic efficacy[3]. |
| Invitro | Trimipramine maleate displays much higher affinity for 5-HT2 than for 5-HT1C receptors[1].Trimipramine maleate is a moderate inhibitor of the human NAT and SERT, with the IC50 values of 4.99 μM and 2.11 μM, respectively[2].SERT and NAT could represent a target for the antidepressant effects of trimipramine maleate (1 mM, 0.1 mM, 0.01 mM, 1 μM, 0.1 μM; 10 min; HEK293 cells)[2]. |
| In Vivo | Trimipramine maleate (5 mg/kg/d; 14 d; chronic administration) acts as functions in rats:1. Increasing concentration of regional 5-HT. 5-HT is highest in the frontal cortex and the hippocampus, followed by the olfactory tubercles and the hypothalamus. 2. Decreasing the number of frontal cortex 5-HT2 and striatal DA D2 receptors. 3. Increasing in the brain regional level of monoamines and metabolites. thus indicates a greater synthesis rate for dopamine (DA) and 5-HT coinciding with an adaptive down regulation of 5-HT2 and DA D2 receptors[3]. Animal Model: |
| Name | Trimipramine maleate |
| CAS | 521-78-8 |
| Formula | C24H30N2O4 |
| Molar Mass | 410.51 |
| Appearance | Solid |
| Transport | Room temperature in continental US; may vary elsewhere. |
| Storage | 4°C, sealed storage, away from moisture *In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture) |
| Reference | [1]. Jenck F, et al. Evidence for a role of 5-HT1C receptors in the antiserotonergic properties of some antidepressant drugs. Eur J Pharmacol. 1993 Feb 9;231(2):223-9. [2]. Haenisch B, et al. Inhibitory potencies of trimipramine and its main metabolites at human monoamine and organic cation transporters. Psychopharmacology (Berl). 2011 Sep. 217(2):289-95. [3]. Juorio AV, et al. The effects of chronic trimipramine treatment on biogenic amine metabolism and on dopamine D2, 5-HT2 and tryptamine binding sites in rat brain. Gen Pharmacol. 1990;21(5):759-62. |
Trimipramine maleate
CAS: 521-78-8 F: C24H30N2O4 W: 410.51
Trimipramine maleate is a 5-HT receptor antagonist, with pKi binding values of 6.39, 8.10, 4.66 for 5-HT1C, 5-HT2 and 5-
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