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Condition: Pain

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Total 374 results found since Jan 2013.

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 AKAP150(flox/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 - October 19, 2017 Category: Neurology Authors: Nie B, Liu C, Bai X, Chen X, Wu S, Zhang S, Huang Z, Xie M, Xu T, Xin W, Zeng W, Ouyang H Tags: Brain Behav Immun Source Type: research

LncRNA NONRATT021972 Was Associated with Neuropathic Pain Scoring in Patients with Type 2 Diabetes.
CONCLUSION: LncRNA NONRATT021972 increased in type 2 diabetes and was positively associated with neuropathic pain scoring in type 2 diabetes. LncRNA NONRATT021972 exacerbated neuropathic pain via TNF-α related pathways. PMID: 28928602 [PubMed - in process]
Source: Behavioural Neurology - September 22, 2017 Category: Neurology Authors: Yu W, Zhao GQ, Cao RJ, Zhu ZH, Li K Tags: Behav Neurol Source Type: research

i-Fect Deliver Plasmids to the CNS
Important for Gene Expression Studies.I have posted many examples of how our customers usei-FectTM  and otherTransfection Solutions for Gene Manipulation Studies. There are also manypublications.Here we feature how i-Fect was used to delivery plasmids to the CNS: Sara Elramah, Mar ía José López-González, Matthieu Bastide, Florence Dixmérias, Olivier Roca-Lapirot, Anne-Cécile Wielanek-Bachelet, Anne Vital, Thierry Leste-Lasserre, Alexandre Brochard, Marc Landry& Alexandre Favereaux.Spinal miRNA-124 regulates synaptopodin and nociception in an animal model of bone cancer pain. Scientific Reports 7, A...
Source: siRNA and DsiRNA Transfection Efficiency - September 21, 2017 Category: Neuroscience Tags: C iFect Plasmid Transfection Plasmid Vector shRNA plasmids Source Type: news

α7 nicotinic acetylcholine receptor in tumor-associated macrophages inhibits colorectal cancer metastasis through the JAK2/STAT3 signaling pathway.
Authors: Fei R, Zhang Y, Wang S, Xiang T, Chen W Abstract Considerable evidence has implied that α7 nicotinic receptor subtypes play an important role in chronic inflammatory and neuropathic pain signaling. The aim of the present study was to determine the role of endogenous α7nAChR signaling in tumor-associated macrophages (TAMs) in human colorectal cancer (CRC) metastasis and prognosis. α7nAChR expression in primary tumor cells and adjacent stroma cells especially in TAMs in 51 CRC patients was observed. Using a human monocyte THP-derived macrophages (TMs) with α7nAChR-siRNA knockdown (TMα7-/-) and a CRC ce...
Source: Oncology Reports - September 14, 2017 Category: Cancer & Oncology Tags: Oncol Rep Source Type: research

Downregulations of TRPM8 expression and membrane trafficking in dorsal root ganglion mediate the attenuation of cold hyperalgesia in CCI rats induced by GFR α3 knockdown.
CONCLUSION: Our results demonstrate that GFRα3 knockdown specially inhibits cold hyperalgesia following CCI via decreasing the expression level and plasma membrane trafficking of TRPM8 in DRG. GFRα3 and its downstream mediator, TRPM8, represent a new analgesia axis which can be further exploited in sensitized cold reflex under the condition of chronic pain. PMID: 28867384 [PubMed - as supplied by publisher]
Source: Brain Research Bulletin - August 31, 2017 Category: Neurology Authors: Su L, Shu R, Song C, Yu Y, Wang G, Li Y, Liu C Tags: Brain Res Bull Source Type: research

Melatonin protects chondrocytes from impairment induced by glucocorticoids via NAD+-dependent SIRT1
Publication date: Available online 10 August 2017 Source:Steroids Author(s): Wei Yang, Xiaomin Kang, Na Qin, Feng Li, Xinxin Jin, Zhengmin Ma, Zhuang Qian, Shufang Wu Intra-articular injection of glucocorticoids is used to relieve pain and inflammation in osteoarthritis patients, which is occasionally accompanied with the serious side effects of glucocorticoids in collagen-producing tissue. Melatonin is the major hormone released from the pineal gland and its beneficial effects on cartilage has been suggested. In the present study, we investigated the protective role of melatonin on matrix degeneration in chondrocytes ind...
Source: Steroids - August 10, 2017 Category: Drugs & Pharmacology Source Type: research

Vimentin Promotes Astrocyte Activation After Chronic Constriction Injury
In this study, the role of vimentin in chronic constriction injury (CCI) was investigated. Western blot revealed increased protein level of vimentin following CCI, peaking at 7  days. Double immunofluorescent staining showed that vimentin was mostly co-localized with astrocytes, not with neurons or microglia. In vitro, sensory neuronal injury stimulated astrocytes to produce more pro-inflammation cytokines, p-ERK (phosphorylated extracellular signal-regulated protein kina se), and vimentin. However, vimentin knockdown by siRNA (small interfering RNA) reversed the upregulation of p-ERK and vimentin expression and reduced t...
Source: Journal of Molecular Neuroscience - August 8, 2017 Category: Neuroscience Source Type: research

Cutaneous inflammation regulates THIK1 expression in small C-like nociceptor dorsal root ganglion neurons
In this study we aimed to identify the currently unknown DRG subpopulations expressing THIK1, and to investigate the relationship between the channel and both inflammatory and spontaneous pain in normal rats. Using a combination of immunohistochemistry, western blotting and behavioural tests, we found that all small neurons and large groups of medium and large DRG neurons express THIK1. Myelinated and unmyelinated fibers, nerve endings in the skin and lamina I and II of the spinal cord also express the channel. THIK1 staining co-localizes with IB4-binding and trkA suggesting that the channel is expressed by nociceptors. At...
Source: Molecular and Cellular Neuroscience - July 2, 2017 Category: Neuroscience Source Type: research

Toll-Like Receptor-4/p38 MAPK Signaling in the Dorsal Horn Contributes to P2X4 Receptor Activation and BDNF Over-secretion In Cancer Induced Bone Pain
In this study, we focused on whether TLR4- mitogen-activated protein kinases, p38 (p38 MAPK) contributes to P2X4R activation and brain-derived neurotrophic factor (BDNF) over-secretion in CIBP. In in vitro experiment, the results showed that BDNF expression evoked by ATP stimulation was dependent on TLR4-p38. In in vivo experiment, the results demonstrated that an intrathecal injection of TLR4 siRNA alleviated nociception induced by lipopolysaccharide (LPS) plus ATP or CIBP with decreased expression of P2X4R, TLR4, BDNF, interleukin-6 (IL-6) and phosphorylated-p38 MAPK (p-p38 MAPK). Moreover, injection with p38MAPK inhibit...
Source: Neuroscience Research - June 29, 2017 Category: Neuroscience Source Type: research

MiR-210 facilitates ECM degradation by suppressing autophagy via silencing of ATG7 in human degenerated NP cells
Publication date: September 2017 Source:Biomedicine & Pharmacotherapy, Volume 93 Author(s): Cheng Wang, Zi-Zhen Zhang, Wei Yang, Zhi-Hua Ouyang, Jing-Bo Xue, Xue-Lin Li, Jian Zhang, Wen-Kang Chen, Yi-Guo Yan, Wen-Jun Wang Intervertebral disc degeneration (IDD) is thought to be the most common cause of low back pain. Dysregulation of microRNAs (miRNAs) is involved in the development of IDD. The aim of this study was to explore the influence of miR-210 on type II collagen (Col II) and aggrecan expression and possible mechanisms in human degenerated nucleus pulposus (NP) cells. Our results showed that miR-210 levels ...
Source: Biomedicine and Pharmacotherapy - June 29, 2017 Category: Drugs & Pharmacology Source Type: research

MiR-210 facilitates ECM degradation by suppressing autophagy via silencing of ATG7 in human degenerated NP cells.
Abstract Intervertebral disc degeneration (IDD) is thought to be the most common cause of low back pain. Dysregulation of microRNAs (miRNAs) is involved in the development of IDD. The aim of this study was to explore the influence of miR-210 on type II collagen (Col II) and aggrecan expression and possible mechanisms in human degenerated nucleus pulposus (NP) cells. Our results showed that miR-210 levels were significantly increased in degenerated NP tissues compared with healthy controls, and positively correlated with disc degeneration grade. By gain-of-function and loss-of-function studies in human degenerated ...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - June 28, 2017 Category: Drugs & Pharmacology Authors: Wang C, Zhang ZZ, Yang W, Ouyang ZH, Xue JB, Li XL, Zhang J, Chen WK, Yan YG, Wang WJ Tags: Biomed Pharmacother Source Type: research

Silencing of FKBP51 alleviates the mechanical pain threshold, inhibits DRG inflammatory factors and pain mediators through the NF-kappaB signaling pathway.
Abstract Neuropathic pain is chronic pain caused by lesions or diseases of the somatosensory system, currently available analgesics provide only temporal relief. The precise role of FK506 binding protein 51 (FKBP51) in neuropathic pain induced by chronic constriction injury (CCI) is not clear. The purpose of the present study was to investigate the effects and possible mechanisms of FKBP51 in neuropathic pain in the rat model of CCI. Our results showed that FKBP51 was obviously upregulated in a time-dependent manner in the dorsal root ganglion (DRG) in CCI rats. Additionally, silencing of FKBP51 remarkably attenua...
Source: Gene - June 16, 2017 Category: Genetics & Stem Cells Authors: Yu HM, Wang Q, Sun WB Tags: Gene Source Type: research

Recent Advances in the Development of T ‐type Calcium Channel Blockers for Pain Intervention
Abstract Cav3.2 T‐type calcium channels are important regulators of pain signals in afferent pain pathway, and their activities are dysregulated during various chronic pain states. Therefore it stands to reason that inhibiting T‐type calcium channels in dorsal root ganglion neurons and in the spinal dorsal horn can be targeted for pain relief. This is supported by early pharmacological studies with T‐type channel blockers such as ethosuximide, and by analgesic effects of siRNA depletion of Cav3.2 channels. In the past five years, considerable effort has been applied towards identifying novel classes of T‐type calci...
Source: British Journal of Pharmacology - June 13, 2017 Category: Drugs & Pharmacology Authors: Terrance P Snutch, Gerald W Zamponi Tags: REVIEW ARTICLE THEMED ISSUE Source Type: research

Identification of a signaling cascade that maintains constitutive {delta}-opioid receptor incompetence in peripheral sensory neurons Signal Transduction
μ-Opioid receptor (MOR) agonists are often used to treat severe pain but can result in adverse side effects. To circumvent systemic side effects, targeting peripheral opioid receptors is an attractive alternative treatment for severe pain. Activation of the δ-opioid receptor (DOR) produces similar analgesia with reduced side effects. However, until primed by inflammation, peripheral DOR is analgesically incompetent, raising interest in the mechanism. We recently identified a novel role for G-protein-coupled receptor kinase 2 (GRK2) that renders DOR analgesically incompetent at the plasma membrane. However, the mechanism ...
Source: Journal of Biological Chemistry - May 26, 2017 Category: Chemistry Authors: Allison Doyle Brackley, Shayda Sarrami, Ruben Gomez, Kristi A. Guerrero, Nathaniel A. Jeske Tags: Neurobiology Source Type: research

Epigenetic upregulation of CXCL12 expression mediates antitubulin chemotherapeutics–induced neuropathic pain
Abstract: Clinically, Microtubule-targeted agents–induced neuropathic pain hampers chemotherapeutics for patients with cancer. Here, we found that application of paclitaxel or vincristine increased the protein and mRNA expression of CXCL12 and frequency and amplitude of miniature excitatory post synaptic currents (mEPSCs) in spinal dorsal horn neurons. Spinal local application of CXCL12 induced the long-term potentiation of nociceptive synaptic transmission and increased the amplitude of mEPSCs. Inhibition of CXCL12 using the transgenic mice (CXCL12−/+) or neutralizing antibody or siRNA ameliorated the mEPSC's enhancem...
Source: Pain - March 25, 2017 Category: Anesthesiology Tags: Research Paper Source Type: research