Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Neurochem Int. 2013 Jun;62(7):956-64. doi: 10.1016/j.neuint.2013.03.011. Epub 2013 Mar 26.

Chronic morphine exposure and its abstinence alters dendritic spine morphology and upregulates Shank1.

Author information

  • 1Neurobiology Department, Cell Biology & Physiology Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India.

Abstract

Exposure to chronic drugs of abuse has been reported to produce significant changes in postsynaptic protein profile, dendritic spine morphology and synaptic transmission. In the present study we demonstrate alterations in dendritic spine morphology in the frontal cortex and nucleus accumbens of mice following chronic morphine treatment as well as during abstinence for two months. Such alterations were accompanied with significant upregulation of the postsynaptic protein Shank1 in synaptosomal enriched fractions. mRNA levels of Shank1 was also markedly increased during morphine treatment and during withdrawal. Studies of the different postsynaptic proteins at the protein and mRNA levels showed significant alterations in the morphine treated groups compared to that of saline treated controls. Taken together, these observations suggest that Shank1 may have an important role in the regulation of spine morphology induced by chronic morphine leading to addiction.

Copyright © 2013 Elsevier Ltd. All rights reserved.

PMID:
23538264
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk