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Pharmacol Ther. 2007 Aug;115(2):292-306. Epub 2007 Apr 20.

Advances in small molecules promoting neurotrophic function.

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  • 1Pharmacology Research Laboratories, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba 305-8585, Japan.


Nerve growth factor (NGF) and other members of the neurotrophin family are critical for the survival and differentiation of neurons and have been implicated in the pathophysiology of numerous disease states. Although the therapeutic potential of neurotrophins has generated much excitement over the past decade, inconvenient pharmacokinetics and adverse side-effect profiles have limited the clinical usefulness of neurotrophic factors themselves. Compounds that mimic neurotrophin signaling and overcome the pharmacokinetic and side-effect barriers may have greater therapeutic potential. Here, we review the progress to date of clinical trials with direct neurotrophin modulators and describe alternative strategies to target (modulate) neurotrophin production and/or their signal transduction pathways. Particular emphasis is placed on small molecules that are able to modulate neurotrophin function in diseases of the nervous system. These alternative strategies show promise in preclinical studies, with some advancing into clinical development. Moreover, the recognition that clinically effective therapeutics, such as antidepressants and immunophilin ligands, can modulate neurotrophin function suggests that the concept of small molecule therapeutics that promote neurotrophic function may still be viable.

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