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May 17, 2026Current Reviews in Clinical and Experimental Pharmacology

Opioid Receptor Independent Effects of Opioid Peptides

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Authors

LMLeonid N MaslovAMA. V. MukhomedzyanovАSА. S. Slidnevskaya

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Overview

Demonstrates non-receptor effects of opioid peptides, indicating an unexplored physiological role.

Key Points

  • The research aims to explore the effects of opioid peptides that are independent of opioid receptor activation.
  • Investigated Des-Tyr1-fragments of opioid peptides and their interaction with opioid receptors.
  • Analyzed the effects of these fragments on various physiological systems including the brain, heart, and immune cells.
  • Identified gaps in understanding associated G-protein coupling and intracellular messengers.
  • Des-Tyr1-fragments of opioid peptides did not activate opioid receptors but exhibited notable physiological effects.
  • Effects on brain, heart, trachea, aorta, arteries, and immune cells were observed, although specific mechanisms remain unclear.
  • No known non-opioid receptor antagonists were identified, leaving the physiological role of non-ORs largely unexplored.

Cite This Study

Maslov et al. (2026) studied this question.

synapsesocial.com/papers/6a095c3f7880e6d24efe2619https://doi.org/10.2174/0127724328447479260426103254
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Also Consider

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  5. 5Endogenous Opioids Contain Terminal Amino Acids That May Be Transformed to Catecholamines In Vivo and Modulate Pain2024