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Condition: Back Pain

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Total 191 results found since Jan 2013.

A thermosensitive, reactive oxygen species-responsive, MR409-encapsulated hydrogel ameliorates disc degeneration in rats by inhibiting the secretory autophagy pathway
Conclusion: Secretory autophagy and associated IL-1β secretion contribute to the pathogenesis of disc degeneration, and MR409 can effectively inhibit this pathway. The ROS-responsive thermosensitive hydrogel encapsulated with MR409 is a potentially efficacious treatment for disc degeneration.
Source: Theranostics - January 15, 2021 Category: Molecular Biology Authors: Qiangqiang Zheng, Haotian Shen, Zongrui Tong, Linxiang Cheng, Yuzi Xu, Zhiyun Feng, Shiyao Liao, Xiaojian Hu, Zongyou Pan, Zhengwei Mao, Yue Wang Tags: Research Paper Source Type: research

Blocking the Spinal Fbxo3/CARM1/K + Channel Epigenetic Silencing Pathway as a Strategy for Neuropathic Pain Relief
AbstractMany epigenetic regulators are involved in pain-associated spinal plasticity. Coactivator-associated arginine methyltransferase 1 (CARM1), an epigenetic regulator of histone arginine methylation, is a highly interesting target in neuroplasticity. However, its potential contribution to spinal plasticity –associated neuropathic pain development remains poorly explored. Here, we report that nerve injury decreased the expression of spinal CARM1 and induced allodynia. Moreover, decreasing spinal CARM1 expression by Fbxo3-mediated CARM1 ubiquitination promoted H3R17me2 decrement at the K+ channel promoter, thereby caus...
Source: Neurotherapeutics - January 7, 2021 Category: Neurology Source Type: research

Neurexin-2 is a potential regulator of inflammatory pain in the spinal dorsal horn of rats.
Abstract Chronic pain is one of the serious conditions that affect human health and remains cure still remains a serious challenge as the molecular mechanism remains largely unclear. Here, we used label-free proteomics to identify potential target proteins that regulate peripheral inflammatory pain and reveal its mechanism of action. Inflammation in peripheral tissue was induced by injecting complete Freund's adjuvant (CFA) into rat hind paw. A proteomic method was adopted to compare the spinal dorsal horn (SDH) in peripheral inflammatory pain (PIP) model rats with controls. Differential proteins were identified i...
Source: J Cell Mol Med - November 8, 2020 Category: Molecular Biology Authors: Xu L, Feng Q, Deng H, Zhang X, Ni H, Yao M Tags: J Cell Mol Med Source Type: research

Predisposition of Neonatal Maternal Separation to Visceral Hypersensitivity via Downregulation of Small-Conductance Calcium-Activated Potassium Channel Subtype 2 (SK2) in Mice.
Conclusions: ELS-induced visceral pain and visceral hypersensitivity are associated with the underfunction of SK2 channels in the spinal DH. PMID: 33029124 [PubMed - in process]
Source: Neural Plasticity - October 10, 2020 Category: Neurology Authors: Wu K, Gao JH, Hua R, Peng XH, Wang H, Zhang YM Tags: Neural Plast Source Type: research

Kalirin-7 contributes to type 2 diabetic neuropathic pain via the postsynaptic density-95/N-methyl-D-aspartate receptor 2B-dependent N-methyl-D-aspartate receptor 2B phosphorylation in the spinal cord in rats.
CONCLUSIONS: Our findings suggest that spinally expressed Kalirin-7 likely contributes to type 2 diabetic neuropathic pain through regulating the PSD-95/NR2B interaction-dependent NR2B phosphorylation in the spinal cord. PMID: 32913553 [PubMed]
Source: American Journal of Translational Research - September 13, 2020 Category: Research Tags: Am J Transl Res Source Type: research

Epigenetic Restoration of Voltage ‐gated Potassium Channel Kv1.2 Alleviates Nerve Injury‐induced Neuropathic Pain
AbstractVoltage ‐gated potassium channels (Kv) are important regulators of neuronal excitability for its role of regulating resting membrane potential and repolarization. Recent studies show that Kv channels participate in neuropathic pain, but the detailed underlying mechanisms are far from being clear. In the c urrent study, we used siRNA, miR‐137 agomir and antagomir to regulate the expression of Kv1.2 in spinal cord and dorsal root ganglia (DRG) of naïve and chronic constriction injury (CCI) rats. Kv currents and neuron excitability in DRG neurons were examined by patch‐clamp whole‐cell recording to verify the...
Source: Journal of Neurochemistry - July 2, 2020 Category: Neuroscience Authors: Jingjing Zhang, Lina Rong, Jinping Shao, Yidan Zhang, Yaping Liu, Sen Zhao, Lei Li, Wenli Yu, Mengya Zhang, Xiuhua Ren, Qingzan Zhao, Changlian Zhu, Huan Luo, Weidong Zang, Jing Cao Tags: ORIGINAL ARTICLE Source Type: research

Evaluation of the Effect of (S)-3,4-Dicarboxyphenylglycine as a Metabotropic Glutamate Receptors Subtype 8 Agonist on Thermal Nociception Following Central Neuropathic Pain.
Conclusions: The results revealed that activation of mGluR8 in PAG is not capable of improving the thermal hyperalgesia threshold. Based on the decreased expression of mGluR8 after SCI induced by clip compression injury and its significant increase after treatment of siRNA against mGluR8, this method might still hold promise as an effective treatment of neuropathic pain. It can be concluded that increased expression of mGluR8 is due to the fact that DCPG prevents the death of neurons that express these receptors. PMID: 32460469 [PubMed - as supplied by publisher]
Source: Asian Spine Journal - May 29, 2020 Category: Orthopaedics Tags: Asian Spine J Source Type: research

PARP-1-regulated TNF- α expression in the dorsal root ganglia and spinal dorsal horn contributes to the pathogenesis of neuropathic pain in rats.
PARP-1-regulated TNF-α expression in the dorsal root ganglia and spinal dorsal horn contributes to the pathogenesis of neuropathic pain in rats. Brain Behav Immun. 2020 Apr 10;: Authors: Gao Y, Bai L, Zhou W, Yang Y, Zhang J, Li L, Jiang M, Mi Y, Li TT, Zhang X, Zhang W, Xu JT Abstract Emerging evidence has implicated poly-(ADP-ribose) polymerase 1 (PARP-1), a transcriptional coregulator, in a variety of inflammatory diseases. In the current study, the role of PARP-1 in neuropathic pain and the underlying mechanisms were investigated. Neuropathic pain was determined by assessing the paw withdrawal th...
Source: Brain, Behavior, and Immunity - April 9, 2020 Category: Neurology Authors: Gao Y, Bai L, Zhou W, Yang Y, Zhang J, Li L, Jiang M, Mi Y, Li TT, Zhang X, Zhang W, Xu JT Tags: Brain Behav Immun Source Type: research

The inhibiting role of periaqueductal gray metabotropic glutamate receptor subtype 8 in a rat model of central neuropathic pain.
In this study, we tried to assess the modulatory effect of (S)-3,4-Dicarboxyphenylglycine (DCPG), a metabotropic glutamate receptor subtype 8 (mGluR8) agonist, in a model of chronic central neuropathic pain in male rats. We used a spinal cord contusion method (T6-T8) for the induction of chronic central neuropathic pain.Male Wistar rats were randomly assigned to 5 equal groups (n = 10 per group). Clips compression injury model was used to induce chronic central neuropathic pain. Three weeks after spinal cord injury DCPG, siRNA and normal saline were administered intra-ventrolaterally to the periaqueductal gray (PAG) regi...
Source: Neurological Research - April 6, 2020 Category: Neurology Tags: Neurol Res Source Type: research

Distinct roles of srGAP3-Rac1 in the initiation and maintenance phases of neuropathic pain induced by paclitaxel.
This article is protected by copyright. All rights reserved. PMID: 32237255 [PubMed - as supplied by publisher]
Source: The Journal of Physiology - March 31, 2020 Category: Physiology Authors: Chen Z, Zhang S, Nie B, Huang J, Hang Z, Chen X, Bai X, Ouyang H Tags: J Physiol Source Type: research

Chronic morphine-mediated upregulation of high mobility group box 1 in the spinal cord contributes to analgesic tolerance and hyperalgesia in rats
We examined whether spinal high mobility group box 1 (HMGB1) is involved in morphine tolerance and its underlying mechanisms by using a model of repeated intrathecal (i.t.) injections of morphine. The results showed that chronic i.t. morphine exposure led to increased expression of HMGB1, Toll-like receptor 4 (TLR4), and receptor for advanced glycation end products (RAGE) and their mRNAs in the dorsal horn. Morphine challenge also promoted HMGB1 expression and release in cultured spinal neurons, but these effects were inhibited by TAK-242, naloxone (antagonists of TLR4), and TLR4 siRNA. Intrathecal coadministration of morp...
Source: Neurotherapeutics - December 25, 2019 Category: Neurology Source Type: research

Analgesic effect of resveratrol on colitis-induced visceral pain via inhibition of TRAF6/NF- κB signaling pathway in the spinal cord.
In conclusion, our results suggest that RSV exerts the effects of antinociception on colitis-induced visceral hyperalgesia through inhibition of spinal TRAF6/NF-κB signaling pathway and the production of inflammatory mediators in the spinal cord, suggesting a new application of RSV for the treatment of visceral pain. PMID: 31536729 [PubMed - as supplied by publisher]
Source: Brain Research - September 15, 2019 Category: Neurology Authors: Lu Y, Xu HM, Han Y, Zhang YL Tags: Brain Res Source Type: research

Receptor for Activated C Kinase 1 Mediates the Chronic Constriction Injury-induced Neuropathic Pain in the Rats’ Peripheral and Central Nervous System
In this study, the biological effects and mechanisms of RACK1 contributes to the pathogenesis of chronic constriction injury (CCI)-induced neuropathic pain were investigated. By western blot and staining, we found that RACK1 protein changed in dorsal root ganglion (DRG) neurons and spinal cord (SC) neurons except glial cells after CCI. Especially, RACK1 was co-located with IB4-, CGRP-positive neurons, suggesting it was related to integrate nociceptive information from the primary afferents in DRG. The successful establishment of CCI models also directly led to mechanical allodynia and heat hyperalgesia, which could be rev...
Source: Neuroscience Letters - September 4, 2019 Category: Neuroscience Source Type: research

i-Fect Delivers circRNA and miRNA
Blocks Bone Cancer PainAltered expression of circular RNA (circRNA) is recognized as a contributor to malignant pain where microRNA (miRNA) exerts an essential effect. Researchers used ouri-FectTMTransfection Kit to knock them down. Zhongqi Zhang, Xiaoxia Zhang, Yanjing Zhang, Jiyuan Li, Zumin Xing. Yiwen Zhang.Spinal circRNA-9119 Suppresses Nociception by Mediating the miR-26a-TLR3 Axis in a Bone Cancer Pain Mouse Model. Spinal circRNA-9119 Suppresses Nociception by Mediating the miR-26a-TLR3 Axis in a Bone Cancer Pain Mouse Model. Journal of Molecular Neuroscience. pp 1 –10Intrathecal Administration of miRNA and circRN...
Source: Neuromics - August 4, 2019 Category: Neuroscience Tags: Bone Cancer Pain circRNA iFect miRNA Transfection Transfection Reagents Source Type: news

Nrf2/HO-1 signaling pathway participated in the protection of hydrogen sulfide on neuropathic pain in rats.
Abstract Neuropathic pain is evoked by aberrant sensory processing in the peripheral or central nervous system, which is characterized by persistent pain, tactile allodynia, or hyperalgesia. Neuroinflammation is associated with the initiation and maintenance of persistent pain in both the peripheral and central nervous systems. Hydrogen sulfide plays important regulatory roles in different physiological and pathological conditions. Therefore, we investigated the effect of hydrogen sulfide on allodynia, hyperalgesia and cytokine release in rats with neuropathic pain and the related regulatory mechanism. Neuropathic...
Source: International Immunopharmacology - July 16, 2019 Category: Allergy & Immunology Authors: Chen H, Xie K, Chen Y, Wang Y, Wang Y, Lian N, Zhang K, Yu Y Tags: Int Immunopharmacol Source Type: research