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Rapid CommunicationMinireview—Special Issue in Memory of Avram Goldstein

Dynorphin–Still an Extraordinarily Potent Opioid Peptide

Charles Chavkin
Molecular Pharmacology April 2013, 83 (4) 729-736; DOI: https://doi.org/10.1124/mol.112.083337
Charles Chavkin
Department of Pharmacology, University of Washington, Seattle, Washington
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Abstract

This issue of Molecular Pharmacology is dedicated to Dr. Avram Goldstein, the journal’s founding editor and one of the leaders in the development of modern pharmacology. This article focuses on his contributions to the discovery of the dynorphins and evidence that members of this family of opioid peptides are endogenous agonists for the kappa opioid receptor. In his original publication describing the purification and sequencing of dynorphin A, Avram described this peptide as ”extraordinarily potent” (“dyn” from the Greek, dynamis = power and “orphin” for endogenous morphine peptide). The name originally referred to its high affinity and great potency in the bioassay that was used to follow its activity during purification, but the name has come to have a second meaning: studies of its physiologic function in brain continue to provide powerful insights to the molecular mechanisms controlling mood disorders and drug addiction. During the 30 years since its discovery, we have learned that the dynorphin peptides are released in brain during stress exposure. After they are released, they activate kappa opioid receptors distributed throughout the brain and spinal cord, where they trigger cellular responses resulting in different stress responses: analgesia, dysphoria-like behaviors, anxiety-like responses, and increased addiction behaviors in experimental animals. Avram predicted that a detailed molecular analysis of opiate drug actions would someday lead to better treatments for drug addiction, and he would be gratified to know that subsequent studies enabled by his discovery of the dynorphins resulted in insights that hold great promise for new treatments for addiction and depressive disorders.

Footnotes

  • This work was supported by the National Institutes of Health National Institute on Drug Abuse [Grants K05DA20570, R37DA11672, and R01DA030074].

  • C.C. is solely responsible for the accuracy and any omissions in this mini-review.

  • dx.doi.org/10.1124/mol.112.083337.

  • Received October 27, 2012.
  • Accepted November 14, 2012.
  • Copyright © 2013 by The American Society for Pharmacology and Experimental Therapeutics
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In this issue

Molecular Pharmacology: 83 (4)
Molecular Pharmacology
Vol. 83, Issue 4
1 Apr 2013
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Rapid CommunicationMinireview—Special Issue in Memory of Avram Goldstein

Enduring Impact of Avram Goldstein’s Discovery of Dynorphin

Charles Chavkin
Molecular Pharmacology April 1, 2013, 83 (4) 729-736; DOI: https://doi.org/10.1124/mol.112.083337

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Rapid CommunicationMinireview—Special Issue in Memory of Avram Goldstein

Enduring Impact of Avram Goldstein’s Discovery of Dynorphin

Charles Chavkin
Molecular Pharmacology April 1, 2013, 83 (4) 729-736; DOI: https://doi.org/10.1124/mol.112.083337
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More in this TOC Section

  • Recent Developments in the Study of Opioid Receptors
  • Nicotinic Receptors in Addiction Pathways
  • GPCR–iGlu Receptor Cross-Talk
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