open access

Vol 11, No 2 (2017)
Review paper
Published online: 2017-10-12
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Basic mechanisms of analgesic effects of opioids

Barbara Przewłocka1
Medycyna Paliatywna w Praktyce 2017;11(2):48-54.
Affiliations
  1. Via Medica, Swietokrzyska Str. 73, 80-180 Gdansk

open access

Vol 11, No 2 (2017)
Review paper
Published online: 2017-10-12

Abstract

In the 70s of the last century, intensive studies and discoveries have begun concerning the structure and function of endogenous opioids, which are the main endogenous antinociceptive system. This period has resulted in many discoveries that are important for understanding the mechanism of opioid action. Knowl­edge about the structure and function of endogenous opioid systems, the distribution and function of the three types of opioid receptors, and the changes in these systems in different types of pain have been systematized. These discoveries are the basis for the development of effective search for new drugs with strong analgesic effects and the limited occurrence of side effects and for development a new pain therapy.

Abstract

In the 70s of the last century, intensive studies and discoveries have begun concerning the structure and function of endogenous opioids, which are the main endogenous antinociceptive system. This period has resulted in many discoveries that are important for understanding the mechanism of opioid action. Knowl­edge about the structure and function of endogenous opioid systems, the distribution and function of the three types of opioid receptors, and the changes in these systems in different types of pain have been systematized. These discoveries are the basis for the development of effective search for new drugs with strong analgesic effects and the limited occurrence of side effects and for development a new pain therapy.

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Keywords

endogenous opioid systems, opioid receptors, opioid analgesia

About this article
Title

Basic mechanisms of analgesic effects of opioids

Journal

Palliative Medicine in Practice

Issue

Vol 11, No 2 (2017)

Article type

Review paper

Pages

48-54

Published online

2017-10-12

Page views

480

Article views/downloads

12343

Bibliographic record

Medycyna Paliatywna w Praktyce 2017;11(2):48-54.

Keywords

endogenous opioid systems
opioid receptors
opioid analgesia

Authors

Barbara Przewłocka

References (20)
  1. Evans CJ, Keith DE, Morrison H, et al. Cloning of a delta opioid receptor by functional expression. Science. 1992; 258(5090): 1952–1955.
  2. Kieffer BL, Befort K, Gaveriaux-Ruff C, et al. The delta-opioid receptor: isolation of a cDNA by expression cloning and pharmacological characterization. Proc Natl Acad Sci U S A. 1992; 89(24): 12048–12052.
  3. Chen Y, Mestek A, Liu J, et al. Molecular cloning and functional expression of a mu-opioid receptor from rat brain. Mol Pharmacol. 1993; 44(1): 8–12.
  4. Mansour A, Thompson RC, Akil H, et al. Delta opioid receptor mRNA distribution in the brain: comparison to delta receptor binding and proenkephalin mRNA. J Chem Neuroanat. 1993; 6(6): 351–362.
  5. Fox CA, Mansour A, Thompson RC, et al. The distribution of dopamine D2 receptor heteronuclear RNA (hnRNA) in the rat brain. J Chem Neuroanat. 1993; 6(6): 363–373.
  6. Schäfer MK, Bette M, Romeo H, et al. Localization of kappa-opioid receptor mRNA in neuronal subpopulations of rat sensory ganglia and spinal cord. Neurosci Lett. 1994; 167(1-2): 137–140.
  7. Bannister K, Lee YS, Goncalves L, et al. Neuropathic plasticity in the opioid and non-opioid actions of dynorphin A fragments and their interactions with bradykinin B2 receptors on neuronal activity in the rat spinal cord. Neuropharmacology. 2014; 85: 375–383.
  8. Przewlocki R. Opioid peptides. Springer Science+Business Media New York 2015. DW Pfaff, ND Volkow (eds) Neuroscience in the 21st Century New York, 2015.
  9. Jin W, Lee NM, Loh HH, et al. Opioids mobilize calcium from inositol 1,4,5-trisphosphate-sensitive stores in NG108-15 cells. J Neurosci. 1994; 14(4): 1920–1929.
  10. Burford NT, Tolbert LM, Sadee W. Specific G protein activation and mu-opioid receptor internalization caused by morphine, DAMGO and endomorphin I. Eur J Pharmacol. 1998; 342(1): 123–126.
  11. Rodriguez Parkitna J, Korostynski M, Kaminska-Chowaniec D, et al. Comparison of gene expression profiles in neuropathic and inflammatory pain. J Physiol Pharmacol. 2006; 57(3): 401–414.
  12. Przewłocki R, Przewłocka B. Opioids in chronic pain. Eur J Pharmacol. 2001; 429(1-3): 79–91.
  13. Watkins LR, Milligan ED, Maier SF. Spinal cord glia: new players in pain. Pain. 2001; 93(3): 201–205.
  14. Mika J. Modulation of microglia can attenuate neuropathic pain symptoms and enhance morphine effectiveness. Pharmacol Rep. 2008; 60(3): 297–307.
  15. Wordliczek J, Szczepanik AM, Banach M, et al. The effect of pentoxifiline on post-injury hyperalgesia in rats and postoperative pain in patients. Life Sci. 2000; 66(12): 1155–1164.
  16. Manglik A, Lin H, Aryal DK, et al. Structure-based discovery of opioid analgesics with reduced side effects. Nature. 2016; 537(7619): 185–190.
  17. Przewłocki R, Labuz D, Mika J, et al. Pain inhibition by endomorphins. Ann N Y Acad Sci. 1999; 897: 154–164.
  18. Przewłocka B, Mika J, Labuz D, et al. Spinal analgesic action of endomorphins in acute, inflammatory and neuropathic pain in rats. Eur J Pharmacol. 1999; 367(2-3): 189–196.
  19. Langford RM, Knaggs R, Farquhar-Smith P, et al. Is tapentadol different from classical opioids? A review of the evidence. Br J Pain. 2016; 10(4): 217–221.
  20. Starnowska J, Costante R, Guillemyn K, et al. Analgesic Properties of Opioid/NK1 Multitarget Ligands with Distinct in Vitro Profiles in Naive and Chronic Constriction Injury Mice. ACS Chem Neurosci. 2017 [Epub ahead of print].

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