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AMPA Receptors in the Therapeutic Management of Depression

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There is an increasing body of evidence implicating a role for α-amino-3-hydroxy-5-methyl-4 isoxazoleproprionic acid (AMPA) receptors in major depression and in the actions of antidepressant drugs. Alterations in AMPA receptors and other ionotropic glutamate receptors have been reported in depression, and following antidepressant treatment. Compounds which augment signaling through AMPA receptors (AMPA receptor potentiators) exhibit antidepressant-like behavioral effects in animal models, and produce neuronal effects similar to those produced by currently available antidepressants, including neurotrophin induction and increases in hippocampal progenitor cell proliferation. Additionally, the antidepressant fluoxetine has been found to alter AMPA receptor phosphorylation in a manner that is expected to increase AMPA receptor signaling. Data from mutant mice suggest that AMPA receptors may regulate the expression of brainderived neurotrophic factor, a neurotrophin which has been implicated in the actions of antidepressant therapies. Combined, these data suggest that AMPA receptors may be in a key position to regulate mood disorders, and that compounds which target AMPA receptors may prove useful in the clinical management of depression.

Keywords: AMPA Receptor Potentiators; LY341495; NMDA receptor; Neurogenesis; antidepressant agents; brain derived neurotrophic factor

Document Type: Research Article

Affiliations: Eli Lilly and Company, Neuroscience Discovery Research, Lilly Corporate Center, Indianapolis, Indiana 46285, USA.

Publication date: April 1, 2007

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  • CNS & Neurological Disorders - Drug Targets aims to cover all the latest and outstanding developments on the medicinal chemistry, pharmacology, molecular biology, genomics and biochemistry of contemporary molecular targets involved in neurological and central nervous system (CNS) disorders e.g. disease specific proteins, receptors, enzymes, genes. Each issue of the journal will contain a series of timely in-depth reviews written by leaders in the field covering a range of current topics on drug targets involved in neurological and CNS disorders. As the discovery, identification, characterization and validation of novel human drug targets for neurological and CNS drug discovery continues to grow; this journal will be essential reading for all pharmaceutical scientists involved in drug discovery and development.
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