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Review ArticleMinireview

Therapeutic Approaches to Nociplastic Pain Based on Findings in the Reserpine-Induced Fibromyalgia-Like Animal Model

Yukinori Nagakura
Journal of Pharmacology and Experimental Therapeutics May 2022, 381 (2) 106-119; DOI: https://doi.org/10.1124/jpet.121.001051
Yukinori Nagakura
School of Pharmacy at Fukuoka, International University of Health and Welfare, Fukuoka, Japan
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Abstract

Nociplastic pain, the third category of chronic pain, has emerged as a serious medical issue. Due to its significant negative influences on patients and society, high prevalence, and lack of sufficiently effective treatments, more efficacious therapies are required. This review highlights the potential therapeutic approaches identified in studies that used reserpine-induced myalgia (RIM) animal model that exhibits nociplastic pain–associated phenotypes. These studies have revealed that biologic processes including the chronic reduction of monoamines, increase of oxidative/nitrosative stresses and inflammatory mediators, upregulation of pronociceptive neurotransmitters and their receptors, increase of trophic factors, enhancement of the apoptotic pathway, sensory nerve sensitization, and activation of immune cells in central and/or peripheral regions underly the nociplastic pain–associated phenotypes in RIM animal model. Potential therapeutic approaches to nociplastic pain, i.e., 1) functional modification of specific molecules whose expression is distinctly altered following the chronic reduction of monoamines, 2) targeting the molecules that are responsible for other major categories of chronic pain (i.e., chronic inflammatory pain and neuropathic pain), 3) supplementation of nutrition to correct the disrupted nutritional balance, 4) improvement of physical constitution by natural substances, and 5) nonpharmacological interventions, have been identified.

SIGNIFICANCE STATEMENT Studies in reserpine-induced myalgia (RIM) animal model have revealed the pathologies that occur after the chronic reduction of monoamines and identified potential therapeutic approaches to nociplastic pain. Translation of their analgesic efficacy from RIM animal model to patients remains an issue to be addressed. Successful translation would lead to better therapies for nociplastic pain.

Footnotes

    • Received December 7, 2021.
    • Accepted February 28, 2022.
  • The author has no actual or perceived conflict of interest with the contents of this article.

  • https://doi.org/10.1124/jpet.121.001051.

  • Copyright © 2022 by The American Society for Pharmacology and Experimental Therapeutics
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Journal of Pharmacology and Experimental Therapeutics: 381 (2)
Journal of Pharmacology and Experimental Therapeutics
Vol. 381, Issue 2
1 May 2022
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Review ArticleMinireview

Potential Therapeutic Approaches to Nociplastic Pain

Yukinori Nagakura
Journal of Pharmacology and Experimental Therapeutics May 1, 2022, 381 (2) 106-119; DOI: https://doi.org/10.1124/jpet.121.001051

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Review ArticleMinireview

Potential Therapeutic Approaches to Nociplastic Pain

Yukinori Nagakura
Journal of Pharmacology and Experimental Therapeutics May 1, 2022, 381 (2) 106-119; DOI: https://doi.org/10.1124/jpet.121.001051
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