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Expert Opin Ther Pat. 2007 Aug;17(8):889-907. doi: 10.1517/13543776.17.8.889.

Enhanced selective serotonin re-uptake inhibitors as antidepressants: 2004 - 2006.

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1
Yale University School of Medicine, PO Box 208048, 801 Howard Avenue, New Haven, CT 06520-8048, USA. henry.huang@yale.edu

Abstract

Depression is a major psychiatric disorder. It affects millions of people worldwide and inflicts tremendous economic burden on societies. The advent of selective serotonin re-uptake inhibitors as antidepressants has been a revolutionary advance in the treatment of depression and related disorders. However, selective serotonin re-uptake inhibitors are also associated with several undesirable properties, such as delayed onset of action, low response rate and side effects. The present search for a newer generation of antidepressants is focused on overcoming these issues. The patent literature covered in this review, during 2004 - 2006, illustrates several strategies employed by the pharmaceutical industry in the development of enhanced serotonin re-uptake inhibitors. Encouraged by the success of venlafaxine and duloxetine, several companies have pursued dual-acting serotonin and noradrenaline re-uptake inhibitors as drug candidates for depression treatment. Molecules with combined serotonin re-uptake inhibitor and 5-HT autoreceptor (5-HT(1A) and/or 5-HT(1B)) antagonist properties are being developed. In particular, recent research suggests that serotonin 5-HT(1B) antagonists alone or combined with selective serotonin re-uptake inhibitors might hold unique promise as efficacious antidepressants. Finally, efforts are underway to formulate new drug candidates with both serotonin re-uptake inhibitor and neurokinin 1 (NK(1)) antagonist activities. Despite mixed results from clinical trials with several NK(1) antagonists, effective therapeutic agents for depression may still emerge from compounds with combined serotonin reuptake inhibitor/NK(1) antagonist properties.

PMID:
20144065
DOI:
10.1517/13543776.17.8.889
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