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Trade names | Several |
Other names | ST-1191; McN-A-2673-11 |
Routes of administration | By mouth |
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Chemical and physical data | |
Formula | C19H28ClN5O |
Molar mass | 377.92 g·mol−1 |
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Etoperidone, associated with several brand names, is an atypical antidepressant which was developed in the 1970s and either is no longer marketed or was never marketed. [1] [2] [3] It is a phenylpiperazine related to trazodone and nefazodone in chemical structure and is a serotonin antagonist and reuptake inhibitor (SARI) similarly to them. [4]
Etoperidone was used or was intended for use as an antidepressant in the treatment of depression. [1] [5]
Site | Ki (nM) | Species | Ref |
---|---|---|---|
SERT | 890 | Human | [7] |
NET | 20,000 | Human | [7] |
DAT | 52,000 | Human | [7] |
5-HT1A | 85 | Human | [8] |
5-HT2A | 36 | Human | [8] |
5-HT2C | ? | ? | ? |
α1 | 38 | Human | [8] |
α2 | 570 | Human | [8] |
D2 | 2,300 | Human | [8] |
H1 | 3,100 | Human | [8] |
mACh | >35,000 | Human | [8] [9] |
Values are Ki (nM). The smaller the value, the more strongly the drug binds to the site. |
Etoperidone is as an antagonist of several receptors in the following order of potency: 5-HT2A receptor (36 nM) > α1-adrenergic receptor (38 nM) > 5-HT1A receptor (85 nM) (may be a partial agonist) > α2-adrenergic receptor (570 nM); [8] it has only very weak or negligible affinity for blocking the following receptors: D2 receptor (2,300 nM) > H1 receptor (3,100 nM) > mACh receptors (>35,000 nM). [8] In addition to its receptor blockade, etoperidone also has weak affinity for the monoamine transporters as well: serotonin transporter (890 nM) > norepinephrine transporter (20,000 nM) > dopamine transporter (52,000 nM). [7]
Etoperidone is metabolized in part to meta-chlorophenylpiperazine (mCPP), which likely accounts for its serotonergic effects. [10] [11]
Etoperidone is a phenylpiperazine and is chemically related to nefazodone and trazodone. [3] [12] [13]
Etoperidone was discovered by scientists at Angelini, who also discovered trazodone. [14] Its development names have included ST-1191 and McN-A-2673-11. [15] [1] The INN etoperidone was proposed in 1976 and recommended in 1977. [16] [17] The drug was given brand names in Spain (Centren (Esteve) and Depraser (Lepori)) and Italy (Staff (Sigma Tau)) [1] and was also given the brand names Axiomin and Etonin, [15] but it is not entirely clear if it was actually marketed; the Pharmaceutical Manufacturing Encyclopedia provides no dates for commercial introduction. [18] According to Micromedex's Index Nominum: International Drug Directory, etoperidone was indeed previously marketed in Spain and Italy. [1]
Etoperidone is the generic name of the drug and its INN, while etoperidone hydrochloride is its USAN. [15] [1] [5]
Etoperidone has been associated with the brand names Axiomin, Centren, Depraser, Etonin, and Staff. [1] [15] [18]
Etoperidone has been studied in dementia and found to be about as effective as thioridazine. [19]
Maprotiline, sold under the brand name Ludiomil among others, is a tetracyclic antidepressant (TeCA) that is used in the treatment of depression. It may alternatively be classified as a tricyclic antidepressant (TCA), specifically a secondary amine. In terms of its chemistry and pharmacology, maprotiline is closely related to other secondary amine TCAs like nortriptyline and protriptyline, and has similar effects to them.
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Desipramine, sold under the brand name Norpramin among others, is a tricyclic antidepressant (TCA) used in the treatment of depression. It acts as a relatively selective norepinephrine reuptake inhibitor, though it does also have other activities such as weak serotonin reuptake inhibitory, α1-blocking, antihistamine, and anticholinergic effects. The drug is not considered a first-line treatment for depression since the introduction of selective serotonin reuptake inhibitor (SSRI) antidepressants, which have fewer side effects and are safer in overdose.
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Mepiprazole is an anxiolytic drug of the phenylpiperazine group with additional antidepressant properties that is marketed in Spain. It acts as a 5-HT2A and α1-adrenergic receptor antagonist and inhibits the reuptake and induces the release of serotonin, dopamine, and norepinephrine to varying extents, and has been described as a serotonin antagonist and reuptake inhibitor (SARI). Controlled clinical trials of mepiprazole in patients with irritable bowel syndrome (IBS) were also carried out and suggested some benefits of the drug in relieving symptoms of IBS in some patients. Similarly to other phenylpiperazines like trazodone, nefazodone, and etoperidone, mepiprazole produces mCPP as an active metabolite.
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