Mechanisms Driving Opioid Tolerance and Hyperalgesia
Received Date: Dec 01, 2025 / Published Date: Dec 29, 2025
Abstract
Opioid tolerance arises from complex cellular and molecular adaptations, including mu-opioid receptor desensitization, altered signaling pathways, and neuroinflammation. Genetic factors also influence susceptibility. Research explores mechanisms involving receptor trafficking, intracellular signaling, glial cell activation, and specific kinases like GRK2 and PKC. Biased agonism and targeting glial cells are promising therapeutic avenues to mitigate tolerance and enhance pain management
Keywords: Opioid Tolerance; Mu-Opioid Receptor; Receptor Desensitization; Neuroinflammation; Glial Cells; G-Protein Coupled Receptor Signaling; Genetic Predisposition; GRK2; Protein Kinase C; Biased Agonism
Citation: Zhou K (2025) Mechanisms Driving Opioid Tolerance and Hyperalgesia. jpar 14: 803 Doi: 10.4172/2167-0846.1000803
Copyright: © 2025 Kevin Zhou This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited.
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