4.7 Review

Extrasynaptic therapeutic targets in substance use and stress disorders

Journal

TRENDS IN PHARMACOLOGICAL SCIENCES
Volume 43, Issue 1, Pages 56-68

Publisher

CELL PRESS
DOI: 10.1016/j.tips.2021.10.006

Keywords

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Funding

  1. United States Public Health Service (USPHS) [DA044782, DA012513, DA016511, DA046373]
  2. Veteran's Administration [BX004727]

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Recent research suggests that perisynaptic astroglia and signaling in the extracellular matrix play a key role in regulating synaptic pathology in substance use and stress disorders. Drugs and stress can initiate long-lasting changes in brain synapses through enduring neuroadaptations in astroglia and the ECM, indicating that modulating extrasynaptic regulators may be therapeutically useful.
Treatments for substance use and stress disorders are based on ameliorating behavioral symptoms, not on reversing the synaptic pathology that has the potential to cure disorders. This failing arises in part from a research focus on how pre- and postsynaptic physiology is changed even though key neuropathology exists in the perisynaptic neuropil that homeostatically regulates synaptic transmission. We explore recent findings from the substance use and stress disorder literature pointing to a key role for perisynaptic astroglia and signaling in the extracellular matrix (ECM) in regulating synaptic pathology. We conclude that drugs and stress initiate long-lasting changes in brain synapses via enduring neuroadaptations in astroglia and the ECM, and that modulating extrasynaptic regulators may be therapeutically useful.

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