1. Modulation of chemotherapy-induced peripheral neuropathy by JZL195 through glia and the endocannabinoid system.
- Author
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Kim L, Nan G, Kim HY, Cha M, and Lee BH
- Subjects
- Animals, Male, Mice, Monoacylglycerol Lipases metabolism, Monoacylglycerol Lipases antagonists & inhibitors, Amidohydrolases metabolism, Amidohydrolases antagonists & inhibitors, Piperidines pharmacology, Cisplatin adverse effects, Cisplatin pharmacology, Antineoplastic Agents adverse effects, Antineoplastic Agents pharmacology, Hyperalgesia chemically induced, Hyperalgesia metabolism, Hyperalgesia drug therapy, Disease Models, Animal, Receptors, Cannabinoid metabolism, Spinal Cord metabolism, Spinal Cord drug effects, Spinal Cord pathology, Carbamates, Piperazines, Endocannabinoids metabolism, Mice, Inbred C57BL, Neuroglia drug effects, Neuroglia metabolism, Neuroglia pathology, Toll-Like Receptor 4 metabolism, Peripheral Nervous System Diseases chemically induced, Peripheral Nervous System Diseases metabolism, Peripheral Nervous System Diseases drug therapy, Peripheral Nervous System Diseases pathology, Ganglia, Spinal metabolism, Ganglia, Spinal drug effects
- Abstract
Chemotherapy-induced peripheral neuropathy (CIPN) used to treat cancer, is a significant side effect with a complex pathophysiology, and its mechanisms remain unclear. Recent research highlights neuroinflammation, which is modulated by the endocannabinoid system (ECS) and associated with glial activation, and the role of toll-like receptor 4 (TLR4) in CIPN. This study aimed to investigate the effects of JZL195, an inhibitor of fatty acid amide hydrolase (FAAH) and monoacylglycerol lipase (MAGL), and explore the connection between cannabinoid receptors and TLR4 in glial cells. A CIPN animal model was developed using cisplatin-injected male C57BL/6 mice. Mechanical and cold allodynia were assessed through von Frey and acetone tests. Western blot analysis was used to examine the expression of catabolic enzymes, cannabinoid receptors, glial cells, and neuroinflammatory factors in the dorsal root ganglia (DRGs) and spinal cord. Immunohistochemistry was used to investigate the colocalization of cannabinoid receptors and TLR4 in glial cells. JZL195 alleviated pain by inhibiting FAAH/MAGL, modulating the ECS and neuroinflammatory factors, and suppressing glial cell activity. Additionally, cannabinoid receptors and TLR4 colocalized with astrocytes and microglia in the spinal cord. This study highlights the therapeutic potential of JZL195 in modulating the ECS and suggests a correlation between cannabinoid receptors and TLR4 in spinal glial cells, providing insight into alleviating pain and neuroinflammation in CIPN., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier Masson SAS.. All rights reserved.)
- Published
- 2024
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