The interaction of escitalopram and R-citalopram at the human serotonin transporter investigated in the mouse
2014
Rationale
Escitalopram appears to be a superior antidepressant to racemic citalopram. It has been hypothesized that binding of R-citalopram to the serotonin transporter (SERT) antagonizes escitalopram binding to and inhibition of the SERT, thereby curtailing the elevation of extracellular 5-hydroxytryptamine (5-HTExt), and hence antidepressant efficacy. Further, it has been suggested that a putative allosteric binding site is important for binding of escitalopram to the primary, orthosteric, site, and for R-citalopram’s inhibition hereof.
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