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Condition: Pain

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Total 374 results found since Jan 2013.

Increased Neuroligin 2 Levels in the Postsynaptic Membrane in Spinal Dorsal Horn may Contribute to Postoperative Pain
Publication date: 1 July 2018 Source:Neuroscience, Volume 382 Author(s): Ruijuan Guo, Huili Li, Xueyang Li, Yuqing Sun, Huihui Miao, Danxu Ma, Fangxiao Hong, Ye Zhang, Yun Guan, Junfa Li, Ming Tian, Yun Wang Neuroligin 2 is a synaptic cell adhesion molecule that is mainly located in inhibitory synapses and is crucial in the regulation of synapse function through protein–protein interactions. However, researchers have not clearly determined whether neuroligin 2 is involved in the development of postoperative pain. In the current study, Western blot, immunofluorescence staining and co-immunoprecipitation were used to exam...
Source: Neuroscience - May 7, 2018 Category: Neuroscience Source Type: research

Ropivacaine regulates the expression and function of heme oxygenase-1
Publication date: July 2018 Source:Biomedicine & Pharmacotherapy, Volume 103 Author(s): Xiangbiao Yan, Yu Li, Xuechang Han, Xu Dong, Yajie Zhang, Qunzhi Xing As a new generation of amide-type local anesthetics (LAs), ropivacaine has been widely used for pain management in clinical settings. Increasing evidence has shown that administration of ropivacaine causes cytotoxic effects and apoptosis. However, the underlying molecular mechanisms still need to be elucidated. In the current study, our results indicated that ropivacaine treatment caused a significant induction of heme oxygenase-1 (HO-1) at both the mRNA and ...
Source: Biomedicine and Pharmacotherapy - April 25, 2018 Category: Drugs & Pharmacology Source Type: research

Water-Soluble Polymer Assists N-Methyl-D-Aspartic Acid Receptor 2B siRNA Delivery to Relieve Chronic Inflammatory Pain In Vitro and In Vivo.
Abstract We constructed a water-soluble lipopolymer (WSLP) as a nonviral gene carrier to deliver siRNA targeting NR2B. The cytotoxicity and serum stability of WSLP loaded with siRNA were evaluated, and the knockdown efficiency of WSLP/NR2B-siRNA in PC12 cells was examined. The results showed that WSLP could protect the loading siRNAs from enzymatic degradation in serum and exhibit low cytotoxicity to cells. After transfection, WSLP/NR2B-siRNA complexes reduced the NR2B transcriptional level by 50% and protein level by 55% compared to control siRNA. Moreover, 3 days after intrathecal injection of WSLP/NR2B-siRNA co...
Source: Pain Research and Management - April 8, 2018 Category: Anesthesiology Authors: Peng J, Ma J, Yang X, He H, Wu H, Ma T, Lu J Tags: Pain Res Manag Source Type: research

Involvement of MrgprC in Electroacupuncture Analgesia for Attenuating CFA-Induced Thermal Hyperalgesia by Suppressing the TRPV1 Pathway.
This study aimed to investigate the involvement of MrgprC and its transient receptor potential vanilloid 1 (TRPV1) pathway in EA analgesia in chronic inflammatory pain. Chronic inflammatory pain was induced by subcutaneously injecting complete Freund's adjuvant (CFA) into the left hind paw. EA (2/100 Hz) stimulation was administered. MrgprC siRNAs were intrathecally administered to inhibit MrgprC expression, and bovine adrenal medulla 8-22 (BAM8-22) was used to activate MrgprC. The mechanical allodynia was decreased by EA significantly since day 3. The piled analgesic effect of EA was partially blocked by 6 intrathecal a...
Source: Evidence-based Complementary and Alternative Medicine - April 7, 2018 Category: Complementary Medicine Tags: Evid Based Complement Alternat Med Source Type: research

Tivanisiran, a novel siRNA for the treatment of dry eye disease.
Authors: Moreno-Montañés J, Bleau AM, Jimenez AI Abstract INTRODUCTION: Dry eye disease (DED) is characterized by an alteration of the tear film with ocular inflammation and neurosensory abnormalities. The main clinical signs of this condition are tear instability and ocular damage. Although DED has gained significant attention in the past few years, limited prescription treatment options are available for patients. Areas covered: The current manuscript summarizes the pre-clinical and clinical development of tivanisiran, a novel small interfering oligonucleotide of RNA (siRNA) used for the treatment of DED. Tivan...
Source: Expert Opinion on Investigational Drugs - March 28, 2018 Category: Drugs & Pharmacology Tags: Expert Opin Investig Drugs Source Type: research

MicroRNA-146a-5p attenuates visceral hypersensitivity through targeting chemokine CCL8 in the spinal cord in a mouse model of colitis.
In this study, we aimed to explore the potential role of miR-146a-5p (the mature form of miR-146a) in a mouse model of colitis induced by intracolonic injection of trinitrobenzene sulfonic acid (TNBS). We found that induction of colitis resulted in visceral hyperalgesia manifested by a decreased pain threshold to colorectal distension and upregulation of miR-146a-5p expression in the lumbosacral spinal cord. In situ hybridization and immunohistochemistry results showed that miR-146a-5p was colocalized with neuronal marker NeuN, but not with astrocytic marker GFAP or microglial marker IBA-1. Dual-luciferase reporter assay s...
Source: Brain Research Bulletin - March 14, 2018 Category: Neurology Authors: Lu Y, Cao DL, Zhao LX, Han Y, Zhang YL Tags: Brain Res Bull Source Type: research

Inhibition of protein tyrosine phosphatase 1B in spinal cord dorsal horn of rats attenuated diabetic neuropathic pain.
Abstract Protein tyrosine phosphatase 1B (PTP1B) has been shown to dephosphorylate and inactivate insulin receptors, which contributes to the pathogenesis of diabetes. Neuropathic pain is one of the severe complications that results from diabetic neuropathy. However, whether PTP1B was involved in the development of diabetic neuropathic pain is largely unknown. The current study illustrated that PTP1B was located in spinal cord dorsal horn neurons of Sprague-Dawley rats. Western blot analysis demonstrated that the diabetic neuropathic pain induced by intraperitoneal injection of streptozotocin was associated with a...
Source: European Journal of Pharmacology - March 8, 2018 Category: Drugs & Pharmacology Authors: Zhao JY, Yang L, Bai HH, Liu JP, Suo ZW, Yang X, Hu XD Tags: Eur J Pharmacol Source Type: research

Long Non-coding RNA BC168687 is Involved in TRPV1-mediated Diabetic Neuropathic Pain in Rats
Publication date: 15 March 2018 Source:Neuroscience, Volume 374 Author(s): Chenglong Liu, Congcong Li, Zeyu Deng, Errong Du, Changshui Xu Long noncoding RNAs (lncRNAs) participate in a diverse range of molecular and biological processes, and dysregulation of lncRNAs has been observed in the pathogenesis of various human diseases. We observed alterations in mechanical withdrawal thresholds (MWT) and thermal withdrawal latencies (TWL) in streptozotocin (STZ)-induced diabetic rats treated with small interfering RNA (siRNA) of lncRNA BC168687. We detected expression of transient receptor potential vanilloid type 1 (TRPV1) in ...
Source: Neuroscience - February 23, 2018 Category: Neuroscience Source Type: research

Secreted frizzled-related protein 2 (SFRP2) expression promotes lesion proliferation via canonical WNT signaling and indicates lesion borders in extraovarian endometriosis
This study was funded by the Academy of Finland and by Tekes: Finnish Funding Agency for Innovation. The authors have no conflict of interest to declare.
Source: Human Reproduction - February 15, 2018 Category: Reproduction Medicine Source Type: research

PKM2 is involved in neuropathic pain by regulating ERK and STAT3 activation in rat spinal cord
ConclusionOur findings demonstrate that inhibiting PKM2 expression effectively attenuates CCI-induced neuropathic pain and inflammatory responses in rats, possibly through regulating ERK and STAT3 signaling pathway.
Source: The Journal of Headache and Pain - January 18, 2018 Category: Neurology Source Type: research

Delivering siRNA in vivo
New Publications Ouri-Fect transfection kit was one of the first products. This has resulted in it being widely used andfrequently published.We kick off 2018 with some new publications. Here we feature a study where researchers use our kit to deliver G-protein-coupled receptor C (MrgprC) siRNA in vivo. This receptor is part of the TRPV1 pathway.Ying-jun Liu, Xiao-xi Lin, Jian-qiao Fang, and Fang Fang. Involvement of MrgprC in electroacupuncture analgesia for attenuating CFA-induced thermal hyperalgesia by suppressing the TRPV1 pathway. Pre-pub-full text PDFImage: Expression of TRPV1 in rats treated with MrgrprC s...
Source: siRNA and DsiRNA Transfection Efficiency - January 13, 2018 Category: Neuroscience Tags: inflammatory pain intrathecal delivery of siRNA Mas-related G-protein-coupled receptor C MrgrpfC TRPV1 Source Type: news

AKAP150 involved in paclitaxel-induced neuropathic pain via inhibiting CN/NFAT2 pathway and downregulating IL-4
In this study, we found that A-kinase anchor protein 150 (AKAP150) was significantly upregulated after paclitaxel injection. Inhibition of AKAP150 via siRNA or AKAP150flox/flox in rodents alleviated the pain behavior induced by paclitaxel, and partly restored the decreased calcineurin (CN) phosphatase activity after paclitaxel treatment. Paclitaxel decreased the expression of anti-inflammatory cytokine interleukin-4 (IL-4), and intrathecal injections of IL-4 effectively alleviated paclitaxel-induced hypersensitivity and the frequency of dorsal root ganglion (DRG) neurons action potential. The decreased CN enzyme activity, ...
Source: Brain, Behavior, and Immunity - January 11, 2018 Category: Neurology Source Type: research

Effects of LncRNA BC168687 siRNA on Diabetic Neuropathic Pain Mediated by P2X7 Receptor on SGCs in DRG of Rats.
In conclusion, lncRNA BC168687 may participate in the pathogenesis of DNP mediated by P2X7 receptor, which will provide a novel way for the study of the pathogenesis of diabetes mellitus complicated with neuropathic pain and its prevention and treatment. PMID: 29204447 [PubMed - in process]
Source: Biomed Res - December 7, 2017 Category: Research Authors: Liu C, Tao J, Wu H, Yang Y, Chen Q, Deng Z, Liu J, Xu C Tags: Biomed Res Int Source Type: research

Downregulation of spinal astrocytic connexin43 leads to upregulation of interleukin ‐6 and cyclooxygenase‐2 and mechanical hypersensitivity in mice
Abstract Connexin43 (Cx43), involved in intercellular signaling, is expressed in spinal dorsal horn astrocytes and crucial in the maintenance of neuropathic pain. Downregulation of spinal astrocytic Cx43 in mice enhances glutamatergic neurotransmission by decreasing glutamate transporter GLT‐1 expression, resulting in cutaneous hypersensitivity. Decreased expression of astrocytic Cx43 could lead to altered expression of other nociceptive molecules. Transfection of Cx43‐targeting siRNA in cultured spinal astrocytes increased expression of the pronociceptive cytokine interleukin‐6 (IL‐6) and the prostaglandin synthes...
Source: Glia - November 6, 2017 Category: Neurology Authors: Norimitsu Morioka, Shiori Fujii, Syun Kondo, Fang Fang Zhang, Kazuki Miyauchi, Yoki Nakamura, Kazue Hisaoka ‐Nakashima, Yoshihiro Nakata Tags: RESEARCH ARTICLE Source Type: research

Fascin-1 Contributes to Neuropathic Pain by Promoting Inflammation in Rat Spinal Cord.
Abstract Neuropathic pain is a complicated clinical syndrome caused by heterogeneous etiology. Despite the fact that the underlying mechanisms remain elusive, it is well accepted that neuroinflammation plays a critical role in the development of neuropathic pain. Fascin-1, an actin-bundling protein, has been proved to be involved in the processing of diverse biological events including cellular development, immunity, and tumor invasion etc. Recent studies have shown that Fascin-1 participates in antigen presentation and the regulation of pro-inflammatory agents. However, whether Fascin-1 is involved in neuropathic...
Source: Neurochemical Research - October 19, 2017 Category: Neuroscience Authors: Wang B, Fan B, Dai Q, Xu X, Jiang P, Zhu L, Dai H, Yao Z, Xu Z, Liu X Tags: Neurochem Res Source Type: research