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Nikoohemmat M, Farmani D, Moteshakereh SM, Salehi S, Rezaee L, Haghparast A. Intra-accumbal orexinergic system contributes to the stress-induced antinociceptive behaviors in the animal model of acute pain in rats. Behav Pharmacol 2024; 35:92-102. [PMID: 38055726 DOI: 10.1097/fbp.0000000000000763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Stress and pain are interleaved at numerous levels - influencing each other. Stress can increase the nociception threshold in animals, long-known as stress-induced analgesia (SIA). Orexin is known as a neuropeptide that modulates pain. The effect of stress on the mesolimbic system in the modulation of pain is known. The role of the intra-accumbal orexin receptors in the modulation of acute pain by forced swim stress (FSS) is unclear. In this study, 117 adult male albino Wistar rats (270-300 g) were used. The animals were unilaterally implanted with cannulae above the NAc. The antagonist of the orexin-1 receptor (OX1r), SB334867, and antagonist of the orexin-2 receptor (OX2r), TCS OX2 29, were microinjected into the NAc in different doses (1, 3, 10, and 30 nmol/0.5 µl DMSO) before exposure to FSS for a 6-min period. The tail-flick test was carried out as an assay nociception of acute pain, and the nociceptive threshold [tail-flick latency (TFL)] was measured for 60-minute. The findings demonstrated that exposure to acute stress could remarkably increase the TFLs and antinociceptive responses. Moreover, intra-accumbal microinjection of SB334867 or TCS OX2 29 blocked the antinociceptive effect of stress in the tail-flick test. The contribution of orexin receptors was almost equally modulating SIA. The present study's findings suggest that OX1r and OX2r within the NAc modulate stress-induced antinociceptive responses. The intra-accumbal microinjection of orexin receptors antagonists declares inducing antinociceptive responses by FSS in acute pain. Proposedly, intra-accumbla orexinergic receptors have a role in the development of SIA.
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Affiliation(s)
- Mohammad Nikoohemmat
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences
| | - Danial Farmani
- Neurophysiology Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences
| | | | - Sakineh Salehi
- Department of Medicine, Ardabil Medical Sciences Branch, Islamic Azad University, Ardabil, Iran
| | - Laleh Rezaee
- Institute of Pathophysiology, University Medical Center, Johannes Gutenberg University, Mainz, Germany
| | - Abbas Haghparast
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences
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Zhang N, Li Y, Feng Z. Inhibition effect of choline and parecoxib sodium on chronic constriction nerve injury-induced neuropathic pain in rats. BMC Anesthesiol 2023; 23:22. [PMID: 36639747 PMCID: PMC9837992 DOI: 10.1186/s12871-022-01913-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 11/16/2022] [Indexed: 01/15/2023] Open
Abstract
PURPOSE The simultaneous use of drugs with different mechanisms of analgesic action is a strategy for achieving effective pain control while minimizing dose-related side effects. Choline was described to potentiate the analgesic action of parecoxib sodium at small doses in several inflammatory pain models. However, these findings are still very limited, and more associated data are required to confirm the effectiveness of the combined choline and parecoxib sodium therapy against inflammatory pain. METHODS Adult rats were randomly divided into 9 groups (N = 6/group). The sham surgery group received an intraperitoneal (i.p.) injection of saline. Rats with chronic constriction injury (CCI) of the sciatic nerve received saline, choline (cho, 6, 12 and 24 mg/kg), parecoxib sodium (pare, 3, 6, and 12 mg/kg), or a combination of choline 6 mg/kg and parecoxib sodium 3 mg/kg. Mechanical and heat pain thresholds were measured at 30 min after drug treatment at Days 3, 5, 7, 10, and 14 after CCI. Another 30 rats were divided into 5 groups (N = 6/group): the sham, CCI + saline, CCI + cho-6 mg/kg, CCI + pare-3 mg/kg, and CCI + cho-6 mg/kg + pare-3 mg/kg groups. After repeated drug treatment for 7 days, five rats were randomly selected from each group, and the lumbar dorsal root ganglia (DRGs) (L4-6) were harvested for western blot analysis. RESULTS Choline significantly attenuated mechanical and heat hypersensitivity in CCI rats at 12 and 24 mg/kg doses (P < 0.05) but was not effective at the 6 mg/kg dose. Parecoxib sodium exerted significant pain inhibitory effects at the 6 and 12 mg/kg doses (P < 0.05) but not at the 3 mg/kg dose. Combining a low dose of choline (6 mg/kg) and parecoxib sodium (3 mg/kg) produced significant pain inhibition in CCI rats and reduced the expression of high mobility group protein 1 (HMGB1) and nuclear factor-kappa Bp65 (NF-κBp65) in L4-6 DRGs. CONCLUSION 1. In a rat model of chronic neuropathic pain (CCI), at a certain dose, choline or parecoxib sodium can alleviate mechanical pain and thermal hyperalgesia caused by CCI. 2. The combination of choline and parecoxib sodium in nonanalgesic doses can effectively relieve neuropathic pain, and its mechanism may be related to the inhibition of the high mobility group protein 1 (HMGB1)/Toll-like receptor 4 (TLR4)/nuclear factor kappa-B (NF-κB) pathway.
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Affiliation(s)
- Na Zhang
- grid.459327.eAnesthesiology Department, Civil Aviation General Hospital, Beijing, 100123 People’s Republic of China
| | - Yang Li
- grid.488137.10000 0001 2267 2324Chinese PLA Medical School, Beijing, 100853 China
| | - Zeguo Feng
- grid.414252.40000 0004 1761 8894Department of Pain Medicine, First Medical Center, Chinese PLA General Hospital, No.28 Fuxing Road, Haidian District, Beijing, 100853 People’s Republic of China
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Dai D, Li W, Chen A, Gao XF, Xiong L. Lateral Habenula and Its Potential Roles in Pain and Related Behaviors. ACS Chem Neurosci 2022; 13:1108-1118. [PMID: 35412792 DOI: 10.1021/acschemneuro.2c00067] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The lateral habenula (LHb) is a tiny structure that acts as a hub, relaying signals from the limbic forebrain structures and basal ganglia to the brainstem modulatory area. Facilitated by updated knowledge and more precise manipulation of circuits, the progress in figuring out the neural circuits and functions of the LHb has increased dramatically over the past decade. Importantly, LHb is found to play an integrative role and has profound effects on a variety of behaviors associated with pain, including depression-like and anxiety-like behaviors, antireward or aversion, aggression, defensive behavior, and substance use disorder. Thus, LHb is a potential target for improving pain management and related disorders. In this review, we focused on the functions, related circuits, and neurotransmissions of the LHb in pain processing and related behaviors. A comprehensive understanding of the relationship between the LHb and pain will help to find new pain treatments.
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Affiliation(s)
- Danqing Dai
- Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, No. 1481, Xinshi North Road, Shanghai 200434, China
- Clinical Research Center for Anesthesiology and Perioperative Medicine, Tongji University, No. 1279, Sanmen Road, Shanghai 200434, China
- Department of Anesthesiology and Perioperative Medicine, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, No. 1279, Sanmen Road, Shanghai 200434, China
| | - Wanrong Li
- Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, No. 1481, Xinshi North Road, Shanghai 200434, China
- Clinical Research Center for Anesthesiology and Perioperative Medicine, Tongji University, No. 1279, Sanmen Road, Shanghai 200434, China
- Department of Anesthesiology and Perioperative Medicine, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, No. 1279, Sanmen Road, Shanghai 200434, China
| | - Aiwen Chen
- Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, No. 1481, Xinshi North Road, Shanghai 200434, China
- Clinical Research Center for Anesthesiology and Perioperative Medicine, Tongji University, No. 1279, Sanmen Road, Shanghai 200434, China
- Department of Anesthesiology and Perioperative Medicine, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, No. 1279, Sanmen Road, Shanghai 200434, China
| | - Xiao-Fei Gao
- Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, No. 1481, Xinshi North Road, Shanghai 200434, China
- Clinical Research Center for Anesthesiology and Perioperative Medicine, Tongji University, No. 1279, Sanmen Road, Shanghai 200434, China
- Department of Anesthesiology and Perioperative Medicine, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, No. 1279, Sanmen Road, Shanghai 200434, China
| | - Lize Xiong
- Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, No. 1481, Xinshi North Road, Shanghai 200434, China
- Clinical Research Center for Anesthesiology and Perioperative Medicine, Tongji University, No. 1279, Sanmen Road, Shanghai 200434, China
- Department of Anesthesiology and Perioperative Medicine, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, No. 1279, Sanmen Road, Shanghai 200434, China
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