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Condition: Pain

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Total 374 results found since Jan 2013.

Expression of Vesicular Nucleotide Transporter in Rat Odontoblasts.
We examined the expression of VNUT in rat pulp by RT-PCR and immunostaining. ATP release from cultured odontoblast-like cells with heat stimulation was evaluated using ATP luciferase methods. VNUT was expressed in pulp tissue, and the distribution of VNUT-immunopositive vesicles was confirmed in odontoblasts. In odontoblasts, some VNUT-immunopositive vesicles were colocalized with membrane fusion proteins. Additionally P2X3, an ATP receptor, immunopositive axons were distributed between odontoblasts. The ATP release by thermal stimulation from odontoblast-like cells was inhibited by the addition of siRNA for VNUT. These fi...
Source: Acta Histochemica et Cytochemica - February 26, 2016 Category: Biochemistry Authors: Ikeda E, Goto T, Gunjigake K, Kuroishi K, Ueda M, Kataoka S, Toyono T, Nakatomi M, Seta Y, Kitamura C, Nishihara T, Kawamoto T Tags: Acta Histochem Cytochem Source Type: research

Pain: FKBP51 inhibition reduces chronic pain
Nature Reviews Drug Discovery 15, 234 (2016). doi:10.1038/nrd.2016.55 Author: Sarah Crunkhorn Polymorphisms in the gene encoding FK506 binding protein 51 (FKBP51) — a regulator of steroid hormone signalling — influence the severity of musculoskeletal pain symptoms after trauma. Here, using Fkbp51-knockout mice and siRNA-induced silencing of Fkbp51 in the mouse spinal cord, Maiarù et
Source: Nature Reviews Drug Discovery - March 31, 2016 Category: Drugs & Pharmacology Authors: Sarah Crunkhorn Tags: Research Highlight Source Type: research

Opioid Receptor Expression in Neuropathic Pain Neurobiology
In this study, we determined the role of G9a in diminished MOR expression and opioid analgesic effects in animal models of neuropathic pain. We found that nerve injury in rats induced a long-lasting reduction in the expression level of MORs in the DRG but not in the spinal cord. Nerve injury consistently increased the enrichment of the G9a product histone 3 at lysine 9 dimethylation in the promoter of Oprm1 in the DRG. G9a inhibition or siRNA knockdown fully reversed MOR expression in the injured DRG and potentiated the morphine effect on pain hypersensitivity induced by nerve injury. In mice lacking Ehmt2 in DRG neurons, ...
Source: Journal of Biological Chemistry - April 14, 2016 Category: Chemistry Authors: Zhang, Y., Chen, S.-R., Laumet, G., Chen, H., Pan, H.-L. Tags: Molecular Bases of Disease Source Type: research

LncRNA NONRATT021972 siRNA regulates neuropathic pain behaviors in type 2 diabetic rats through the P2X7 receptor in dorsal root ganglia
This study explores the effects of lncRNA NONRATT021972 small interfere...
Source: Molecular Brain - April 23, 2016 Category: Neuroscience Authors: Shuangmei Liu, Lifang Zou, Jinyan Xie, Wei Xie, Shiyao Wen, Qiuyu Xie, Yun Gao, Guilin Li, Chunping Zhang, Changshui Xu, Hong Xu, Bing Wu, Qiulan Lv, Xi Zhang, Shouyu Wang and Yun Xue Source Type: research

Pharmacogenetic Discovery in CALGB (Alliance) 90401 and Mechanistic Validation of a VAC14 Polymorphism That Increases Risk of Docetaxel-Induced Neuropathy.
CONCLUSIONS: VAC14 should be prioritized for further validation of its potential role as a predictor of docetaxel-induced neuropathy and biomarker for treatment individualization. PMID: 27143689 [PubMed - as supplied by publisher]
Source: Clinical Cancer Research - May 2, 2016 Category: Cancer & Oncology Authors: Hertz DL, Owzar K, Lessans S, Wing C, Jiang C, Kelly WK, Patel JN, Halabi S, Furukawa Y, Wheeler HE, Sibley A, Lassiter C, Weisman LS, Watson D, Krens SD, Mulkey F, Renn CL, Small EJ, Febbo PG, Shterev I, Kroetz D, Friedman PN, Mahoney JF, Carducci MA, Ke Tags: Clin Cancer Res Source Type: research

Nocistatin sensitizes TRPA1 channels in peripheral sensory neurons.
In conclusion, we uncovered the sensitization of TRPA1 by Nocistatin, which may represent a novel mechanism how Nocistatin can modulate pain. PMID: 27362459 [PubMed - as supplied by publisher]
Source: Channels - July 1, 2016 Category: Molecular Biology Tags: Channels (Austin) Source Type: research

Role of Nectin-1/c-Src Signaling in the Analgesic Effect of GDNF on a Rat Model of Chronic Constrictive Injury
In this study, we aimed to examine whether the adhesion protein nectin-1 and its downstream protein c-Src are involved in neuropathic pain. We found that nectin-1 was expressed in the superficial dorsal horn of the spinal cord and that it was increased after chronic constrictive injury (CCI). Intrathecal administration of nectin-1 siRNA attenuated neuropathic pain induced by CCI via interference of the expression of nectin-1. Furthermore, we found that GDNF can downregulate the phosphorylation level of nectin-1-associated c-Src without changing the expression level of nectin-1. In summary, these data suggest that nectin-1 ...
Source: Journal of Molecular Neuroscience - July 8, 2016 Category: Neuroscience Source Type: research

Functional inhibition of chemokine receptor CCR2 by dicer-substrate-siRNA prevents pain development
Conclusion Altogether, these results validate CCR2 as a an appropriate molecular target for pain control and demonstrate that RNAi-based gene therapy represent an highly specific alternative to classical pharmacological approaches to treat central pathologies such as chronic pain.
Source: Molecular Pain - June 14, 2016 Category: Molecular Biology Authors: Begin-Lavallee, V., Midavaine, E., Dansereau, M.-A., Tetreault, P., Longpre, J.-M., Jacobi, A. M., Rose, S. D., Behlke, M. A., Beaudet, N., Sarret, P. Tags: Research Article Source Type: research

Epac–protein kinase C alpha signaling in purinergic P2X3R-mediated hyperalgesia after inflammation
Abstract: Sensitization of purinergic P2X3 receptors (P2X3Rs) is a major mechanism contributing to injury-induced exaggerated pain responses. We showed in a previous study that cyclic adenosine monophosphate (cAMP)–dependent guanine nucleotide exchange factor 1 (Epac1) in rat sensory dorsal root ganglia (DRGs) is upregulated after inflammatory injury, and it plays a critical role in P2X3R sensitization by activating protein kinase C epsilon (PKCε) inside the cells. protein kinase C epsilon has been established as the major PKC isoform mediating injury-induced hyperalgesic responses. On the other hand, the role of PKCα ...
Source: Pain - July 1, 2016 Category: Anesthesiology Tags: Research Paper Source Type: research

Downregulation of ClC-3 in dorsal root ganglia neurons contributes to mechanical hypersensitivity following peripheral nerve injury.
Abstract ClC-3 chloride channel/antiporter has been demonstrated to play an important role in synaptic transmission in central nervous system. However, its expression and function in sensory neurons is poorly understood. In present work, we found that ClC-3 is expressed at high levels in dorsal root ganglia (DRG). Co-immunofluorescent data showed that ClC-3 is mainly distributed in A- and C-type nociceptive neurons. ClC-3 expression in DRG is decreased in the spared nerve injury (SNI) model of neuropathic pain. Knockdown of local ClC-3 in DRG neurons with siRNA increased mechanical sensitivity in naïve rats, whil...
Source: Neuropharmacology - July 22, 2016 Category: Drugs & Pharmacology Authors: Pang RP, Xie MX, Yang J, Shen KF, Chen X, Su YX, Yang C, Tao J, Liang SJ, Zhou JG, Zhu HQ, Wei XH, Li YY, Qin ZH, Liu XG Tags: Neuropharmacology Source Type: research

More on Epigenetics and Pain
Great Research Tools!OurMarkers and i-FectTM Transection Kit are used to studyEpigenetics and pain. Here ' s yet another example:M. Leinders, b, N. Üçeyler, R.A. Pritchard, C. Sommer, L.S. Sorkin. Increased miR-132-3p expression is associated with chronic neuropathic pain. Experimental Neurology. Volume 283, Part A, September 2016, Pages 276 –286...The inhibitor and mimetic were administered to awake rats via the it catheters. Prior to injection, active or mismatch inhibitors were mixed with (1:5 w/v) i-Fect™ in vivo transfection reagent(Neuromics, Edina, USA) to final doses of 5, 2 and 1 μg in 10 μl...Fi...
Source: Neuromics - August 19, 2016 Category: Neuroscience Tags: chronic pain iFect miRNA siRNA delivery in-vivo Source Type: news

Delivering miRNA in vivo
More Transfection Success!Great Research Tools!Our i-FectTM  Transfection Kit is used to studyEpigenetics and pain. Here ' s yet another example:M. Leinders, b, N. Üçeyler, R.A. Pritchard, C. Sommer, L.S. Sorkin. Increased miR-132-3p expression is associated with chronic neuropathic pain. Experimental Neurology. Volume 283, Part A, September 2016, Pages 276 –286...The inhibitor and mimetic were administered to awake rats via the it catheters. Prior to injection, active or mismatch inhibitors were mixed with (1:5 w/v) i-Fect™ in vivo transfection reagent(Neuromics, Edina, USA) to final doses of 5, 2 and...
Source: siRNA and DsiRNA Transfection Efficiency - August 19, 2016 Category: Neuroscience Tags: iFect miRNA Delivery Methods Source Type: news

Autophagy activated by tuberin/mTOR/p70S6K suppression is a protective mechanism against local anaesthetics neurotoxicity
Abstract The local anaesthetics (LAs) are widely used for peripheral nerve blocks, epidural anaesthesia, spinal anaesthesia and pain management. However, exposure to LAs for long duration or at high dosage can provoke potential neuronal damages. Autophagy is an intracellular bulk degradation process for proteins and organelles. However, both the effects of LAs on autophagy in neuronal cells and the effects of autophagy on LAs neurotoxicity are not clear. To answer these questions, both lipid LAs (procaine and tetracaine) and amide LAs (bupivacaine, lidocaine and ropivacaine) were administrated to human neuroblastoma SH‐S...
Source: Journal of Cellular and Molecular Medicine - October 31, 2016 Category: Molecular Biology Authors: Jingwei Xiong, Qiuyue Kong, Leyang Dai, He Ma, Xiaofei Cao, Li Liu, Zhengnian Ding Tags: Original Article Source Type: research

Neuronal Fc-epsilon receptor I contributes to antigen-evoked pruritus in a murine model of ocular allergy
This study may suggest a novel mechanism for the development of pathological itch in allergic diseases.
Source: Brain, Behavior, and Immunity - November 15, 2016 Category: Neurology Source Type: research

Autophagy activated by tuberin/mTOR/p70S6K suppression is a protective mechanism against local anaesthetics neurotoxicity.
Abstract The local anaesthetics (LAs) are widely used for peripheral nerve blocks, epidural anaesthesia, spinal anaesthesia and pain management. However, exposure to LAs for long duration or at high dosage can provoke potential neuronal damages. Autophagy is an intracellular bulk degradation process for proteins and organelles. However, both the effects of LAs on autophagy in neuronal cells and the effects of autophagy on LAs neurotoxicity are not clear. To answer these questions, both lipid LAs (procaine and tetracaine) and amide LAs (bupivacaine, lidocaine and ropivacaine) were administrated to human neuroblasto...
Source: J Cell Mol Med - November 14, 2016 Category: Molecular Biology Authors: Xiong J, Kong Q, Dai L, Ma H, Cao X, Liu L, Ding Z Tags: J Cell Mol Med Source Type: research