Recent Developments in Neurochemical Imaging in Schizophrenia: An Update

Authors: S. Vyas, Nora; H. Patel, Neva; Herscovitch, Peter; K. Puri, Basant; Lanzenberger, Rupert

Source: Current Medicinal Chemistry, Volume 20, Number 3, January 2013 , pp. 351-356(6)

Publisher: Bentham Science Publishers

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Abstract:

The advent of neurochemical brain imaging methods has provided an opportunity to study the neurochemistry of the human brain in normal and abnormal development. The aim of this article is to provide an update on recent major developments in neurochemical imaging in schizophrenia research. In this concise review, we discuss the major findings on three neurotransmitters, namely dopamine, serotonin and glutamate. The most promising radioligand for D2/D3 neuroreceptor imaging is the agonist [11C]PHNO, with higher in vivo affinity for D3 than D2 receptors, which can be used to measure amphetamine-induced release of dopamine, and therefore a potential model of dopaminergic alterations in schizophrenia. Recent development of selective radiotracers allow imaging of the serotonin transporter (SERT) using positron emission tomography (PET) with selective tracers such as [11C]DASB. Additionally, the glutamatergic hypothesis has evolved from theory to phase III clinical trials of newer agents with novel mechanisms. With the development of newer radioligands and the in vivo application of magnetic resonance spectroscopy (MRS) at relatively high magnetic field strengths, there is ample scope for further neuroimaging advances.

Keywords: PET; dopamine; glutamate; occupancy; schizophrenia; serotonin

Document Type: Research Article

Publication date: January 1, 2013

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  • Current Medicinal Chemistry covers all the latest and outstanding developments in medicinal chemistry and rational drug design. Each issue contains a series of timely in-depth reviews written by leaders in the field covering a range of the current topics in medicinal chemistry. Current Medicinal Chemistry is an essential journal for every medicinal chemist who wishes to be kept informed and up-to-date with the latest and most important developments.
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