keyword
MENU ▼
Read by QxMD icon Read
search

Spinal nerve ligation

keyword
https://www.readbyqxmd.com/read/28197545/active-nerve-regeneration-with-failed-target-reinnervation-drives-persistent-neuropathic-pain
#1
Wenrui Xie, Judith A Strong, Jun-Ming Zhang
Peripheral nerves can regenerate and, when injured, may cause neuropathic pain. We propose that the active regeneration process plays a pivotal role in the maintenance of neuropathic pain. In one commonly used rodent neuropathic pain model, pronounced pain behaviors follow ligation and cutting of the L5 spinal nerve. We found that the injured nerve regenerates into the sciatic nerve and functionally reinnervates target tissues: the regenerated nerve conducts electrical signals, mechanical responses, and tracers between the leg/hindpaw and axotomized sensory ganglion...
January 2017: ENeuro
https://www.readbyqxmd.com/read/28195183/interleukin-1%C3%AE-pre-treated-bone-marrow-stromal-cells-alleviate-neuropathic-pain-through-ccl7-mediated-inhibition-of-microglial-activation-in-the-spinal-cord
#2
Jian Li, Guoying Deng, Haowei Wang, Mei Yang, Rui Yang, Xiangnan Li, Xiaoping Zhang, Hongbin Yuan
Although neuropathic pain is one of the most intractable diseases, recent studies indicate that systemic or local injection of bone marrow stromal cells (BMSCs) decreases pro-inflammatory cytokines release and alleviates neuropathic pain. However, it is still not clear whether pre-treated BMSCs have a strong anti-inflammatory and/or analgesia effect. Using the spinal nerve ligation model of neuropathic pain, IL-1β pre-treated BMSCs (IL-1β-BMSCs) were injected into rats followed by SNL in order to determine possible effects...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28177520/broad-spectrum-efficacy-with-ly2969822-an-oral-prodrug-of-metabotropic-glutamate-2-3-mglu2-3-receptor-agonist-ly2934747-in-rodent-pain-models
#3
Michael P Johnson, Mark A Muhlhauser, Eric S Nisenbaum, Rosa M A Simmons, Beth M Forster, Kelly L Knopp, Lijuan Yang, Denise Morrow, Dominic L Li, Jeffrey D Kennedy, Steven Swanson, James A Monn
BACKGROUND AND PURPOSE: A body of evidence suggests activation of metabotropic glutamate 2/3 (mGlu2/3 ) receptors would be an effective analgesic in chronic pain conditions. Thus, the analgesic properties of a novel mGlu2/3 receptor agonist prodrug were investigated. EXPERIMENTAL APPROACH: After oral absorption, the prodrug LY2969822 rapidly converts to the brain penetrant, potent, and subtype-selective mGlu2/3 receptor agonist LY2934747. Behavioral assessments of allodynia, hyperalgesia, or nocifensive behaviors in preclinical pain models were determined after administration of LY2969822 of 0...
February 8, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28158164/rapid-and-delayed-effects-of-pulsed-radiofrequency-on-neuropathic-pain-electrophysiological-molecular-and-behavioral-evidence-supporting-long-term-depression
#4
Ren-Yu Huang, Chia-Chi Liao, Shih-Ying Tsai, Chen-Tung Yen, Chii-Wann Lin, Tsung-Chi Chen, Wei-Tso Lin, Chi-Heng Chang, Yeong-Ray Wen
BACKGROUND: Pulsed radiofrequency (PRF) has been widely employed for ameliorating clinical neuropathic pain. How PRF alters electrophysiological transmission and modulates biomolecular functions in neural tissues has yet to be clarified. We previously demonstrated that an early application of low-voltage bipolar PRF adjacent to the dorsal root ganglion (DRG) reduced acute neuropathic pain in animals. By contrast, the present study investigated how PRF alters postsynaptic sensitization to produce early and delayed effects on neuropathic pain...
February 2017: Pain Physician
https://www.readbyqxmd.com/read/28155010/chemokine-cxcl13-activates-p38-mapk-in-the-trigeminal-ganglion-after-infraorbital-nerve-injury
#5
Qian Zhang, Ming-Di Zhu, De-Li Cao, Xue-Qiang Bai, Yong-Jing Gao, Xiao-Bo Wu
Recent data demonstrated that chemokine CXCL13 mediates neuroinflammation and contributes to the maintenance of neuropathic pain after nerve injury in the spinal cord. Pro-nociceptive chemokines activate mitogen-activated protein kinases (MAPKs) which are potential signaling pathways contributing to the nociceptive behavior in inflammatory or neuropathic pain. However, whether activation of p38 and JNK MAPK signaling pathway in the trigeminal ganglion (TG) are involved in CXCL13 and its receptor CXCR5-mediated orofacial pain has not yet been clarified...
February 2, 2017: Inflammation
https://www.readbyqxmd.com/read/28145509/serum-protein-changes-in-a-rat-model-of-chronic-pain-show-a-correlation-between-animal-and-humans
#6
Elisa Bellei, Antonietta Vilella, Emanuela Monari, Stefania Bergamini, Aldo Tomasi, Aurora Cuoghi, Simona Guerzoni, Letizia Manca, Michele Zoli, Luigi Alberto Pini
In previous works we showed the overexpression of some proteins in biological fluids from patients suffering chronic pain. In this proteomic study we analysed serum from a rat model of neuropathic pain obtained by the chronic constriction injury (CCI) of sciatic nerve, at two time intervals, 2 and 5 weeks after the insult, to find proteins involved in the expression or mediation of pain. Sham-operated and CCI rats were treated with saline or indomethacin. Two weeks after ligation, we identified three serum proteins overexpressed in CCI rats, two of which, alpha-1-macroglobulin and vitamin D-binding protein (VDBP), remained increased 5 weeks post-surgery; at this time interval, we found increased levels of further proteins, namely apolipoprotein A-I (APOA1), apolipoprotein E (APOE), prostaglandin-H2 D-isomerase (PTGDS) and transthyretin (TTR), that overlap the overexpressed proteins found in humans...
February 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28133521/activation-of-neurotrophins-in-lumbar-dorsal-root-probably-contributes-to-neuropathic-pain-after-spinal-nerve-ligation
#7
Abdolreza Kazemi, Masoud Rahmati, Rasoul Eslami, Vahid Sheibani
OBJECTIVES: Neurotrophins (NTs) exert various effects on neuronal system. Growing evidence indicates that NTs are involved in the pathophysiology of neuropathic pain. However, the exact role of these proteins in modulating nociceptive signaling requires being defined. Thus, the aim of this study was to evaluate the effects of spinal nerve ligation (SNL) on NTs activation in the lumbar dorsal root. MATERIALS AND METHODS: Ten male Wistar rats were randomly assigned to two groups: tight ligation of the L5 spinal nerve (SNL: n=5) and Sham (n=5)...
January 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28100749/promoted-interaction-of-c-ebp%C3%AE-with-demethylated-cxcr3-gene-promoter-contributes-to-neuropathic-pain-in-mice
#8
Bao-Chun Jiang, Li-Na He, Xiao-Bo Wu, Hui Shi, Wen-Wen Zhang, Zhi-Jun Zhang, De-Li Cao, Chun-Hua Li, Jun Gu, Yong-Jing Gao
: DNA methylation has been implicated in the pathogenesis of chronic pain. However, the specific genes regulated by DNA methylation under neuropathic pain condition remain largely unknown. Here we investigated how chemokine receptor CXCR3 is regulated by DNA methylation and how it contributes to neuropathic pain induced by spinal nerve ligation (SNL) in mice. SNL increased Cxcr3 mRNA and protein expression in the neurons of the spinal cord. Meanwhile, the CpG (5'-cytosine-phosphate-guanine-3') island in the Cxcr3 gene promoter region was demethylated, and the expression of DNA methyltransferase 3b (DNMT3b) was decreased...
January 18, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28098360/morroniside-a-secoiridoid-glycoside-from-cornus-officinalis-attenuates-neuropathic-pain-by-activation-of-spinal-glucagon-like-peptide-1-receptors
#9
Meng Xu, Hai-Yun Wu, Hao Liu, Nian Gong, Yi-Rui Wang, Yong-Xiang Wang
BACKGROUND AND PURPOSE: Iridoid glycosides with intact double bond scaffold of cyclopentapyran were reversible and orthosteric agonists of glucagon-like peptide-1 (GLP-1) receptors and possess antinociception and neuroprotection. Morroniside, derived from the medicinal herb Cornus officinalis, is an atypical secoiridoid replaced by a six-membered cyclic inner ether fragment. This study investigated whether morroniside was an orthosteric GLP-1 receptor agonist and had antihypersensitivity activities in neuropathy...
January 18, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28095324/formalin-injection-produces-long-lasting-hypersensitivity-with-characteristics-of-neuropathic-pain
#10
Ana Belen Salinas-Abarca, Sabino Hazael Avila-Rojas, Paulino Barragán-Iglesias, Jorge Baruch Pineda-Farias, Vinicio Granados-Soto
The purpose of this study was to investigate whether 1%, 2% or 5% formalin injection produce hypersensitivity with characteristics of the neuropathic pain induced by spinal nerve injury. Formalin injection (1%, 2% and 5%) produced concentration-dependent long-lasting (at least 14 days) mechanical allodynia and hyperalgesia in both paws. Likewise, L5/L6 spinal nerve ligation induced allodynia and hyperalgesia in both paws. The intensity of hypersensitivity was greater in the ipsilateral than in the contralateral paw in all models...
January 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28092651/long-lasting-antinociceptive-effects-of-green-light-in-acute-and-chronic-pain-in-rats
#11
Mohab M Ibrahim, Amol Patwardhan, Kerry B Gilbraith, Aubin Moutal, Xiaofang Yang, Lindsey A Chew, Tally Largent-Milnes, T Philip Malan, Todd W Vanderah, Frank Porreca, Rajesh Khanna
Treatments for chronic pain are inadequate, and new options are needed. Nonpharmaceutical approaches are especially attractive with many potential advantages including safety. Light therapy has been suggested to be beneficial in certain medical conditions such as depression, but this approach remains to be explored for modulation of pain. We investigated the effects of light-emitting diodes (LEDs), in the visible spectrum, on acute sensory thresholds in naive rats as well as in experimental neuropathic pain...
February 2017: Pain
https://www.readbyqxmd.com/read/28089666/mini-open-oblique-lumbar-interbody-fusion-olif-approach-for-multi-level-discectomy-and-fusion-involving-l5-s1-preliminary-experience
#12
Fahed Zairi, Tarek P Sunna, Harrison J Westwick, Alexander G Weil, Zhi Wang, Ghassan Boubez, Daniel Shedid
STUDY DESIGN: Technical description and single institution retrospective case series OBJECTIVE: Evaluate technical feasibility and evaluate complications of mini open retroperitoneal oblique lumbar interbody fusion (OLIF) at the L5-S1 level. SUMMARY OF BACKGROUND: The mini open retroperitoneal oblique lumbar interbody fusion (OLIF) approach was first described in 2012 as a surgical approach to achieve spinal fusion while limiting invasiveness of the exposure to the anterior lumbar spine...
January 12, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28053243/descending-antinociception-induced-by-secondary-somatosensory-cortex-stimulation-in-experimental-neuropathy-role-of-the-medullospinal-serotonergic-pathway
#13
Boriss Sagalajev, Hanna Viisanen, Hong Wei, Antti Pertovaara
Stimulation of the secondary somatosensory cortex (S2) has attenuated pain in humans and inflammatory nociception in animals. Here we studied S2 stimulation-induced antinociception and its underlying mechanisms in an experimental animal model of neuropathy induced by spinal nerve ligation (SNL). Effect of S2 stimulation on heat-evoked limb withdrawal latency was assessed in lightly anesthetized rats that were divided into three groups based on prior surgery and monofilament testing before induction of anesthesia: i) Sham operated group, ii-iii) (mechanically) hypersensitive and non-hypersensitive SNL groups...
January 4, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28018284/developmental-changes-in-pain-and-spinal-immune-gene-expression-after-radicular-trauma-in-the-rat
#14
Gordon A Barr, Shaoning Wang, Christine L Weisshaar, Beth A Winkelstein
Neuropathic pain is chronic pain that develops after nerve injury and is less frequent in infants and children than in adults. Likewise, in animal models of neuropathic pain, allodynia and hyperalgesia are non-existent or attenuated in the infant, with a "switch" during development by which acute nerve injury transitions to chronic pain. Concomitant with the delay in neuropathic pain, there is a parallel delay in the ability of nerve injury to activate the immune system. Models of neuropathic pain in the infant have used various ligation methods and find that neuropathic pain does not occur under after postnatal days 21-28 (PN21-PN28), linked to activation of immune processes and developmental regulation of anti-inflammatory cytokines...
2016: Frontiers in Neurology
https://www.readbyqxmd.com/read/28012097/mirna-expression-change-in-dorsal-root-ganglia-after-peripheral-nerve-injury
#15
Hsueh-Ling Chang, Hung-Chen Wang, Yi-Ta Chunag, Chao-Wen Chou, I-Ling Lin, Chung-Sheng Lai, Lin-Li Chang, Kuang-I Cheng
The role of microRNAs (miRNAs) in the regulation of nerve injury-induced neuropathic pain is unclear. The aims of this study were to assess and compare miRNA expression profiles in dorsal root ganglia (DRG) following three different kinds of peripheral nerve injury, including spinal nerve ligation (SNL), dorsal root transection (DRT), and ventral root transection (VRT), in Sprague-Dawley rats. Responses to thermal and mechanical stimuli were measured preoperatively and on postoperative days (PODs) 1, 4, and 7...
December 24, 2016: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28011743/5-ht2c-receptor-knockdown-in-the-amygdala-inhibits-neuropathic-pain-related-plasticity-and-behaviors
#16
Guangchen Ji, Wei Zhang, Lenin Mahimainathan, Madhusudhanan Narasimhan, Takaki Kiritoshi, Xiuzhen Fan, Jigong Wang, Thomas A Green, Volker Neugebauer
Neuroplasticity in the amygdala drives pain-related behaviors. The central nucleus (CeA) serves major amygdala output functions and can generate emotional-affective behaviors and modulate nocifensive responses. The CeA receives excitatory and inhibitory inputs from the basolateral nucleus (BLA) and serotonin receptor subtype 5-HT2CR in the BLA, but not CeA, has been implicated anxiogenic behaviors and anxiety disorders. Here, we tested the hypothesis that 5-HT2CR in the BLA plays a critical role in CeA plasticity and neuropathic pain behaviors in the rat spinal nerve ligation (SNL) model...
February 8, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28009628/enhanced-delivery-of-il-1-receptor-antagonist-to-the-cns-as-a-novel-anti-tfr-il-1ra-fusion-reverses-neuropathic-mechanical-hypersensitivity
#17
Carl I Webster, Jon Hatcher, Matthew Burrell, George Thom, Peter Thornton, Ian Gurrell, Iain Chessell
Neuropathic pain is a major unmet medical need, with only 30-35 % of patients responding to the current standard of care. The discovery and development of novel therapeutics to address this unmet need have been hampered by poor target engagement, the selectivity of novel molecules, and limited access to the relevant compartments. Biologic therapeutics, either monoclonal antibodies (mAb) or peptides, offer a solution to the challenge of specificity as the intrinsic selectivity of these kinds of molecules is significantly higher than traditional medicinal chemistry-derived approaches...
December 20, 2016: Pain
https://www.readbyqxmd.com/read/28000161/upregulated-tlr3-promotes-neuropathic-pain-by-regulating-autophagy-in-rat-with-l5-spinal-nerve-ligation-model
#18
Weijia Chen, Zhijun Lu
Microglia, rapidly activated following peripheral nerve injury (PNI), accumulate within the spinal cord and adopt inflammation that contributes to development and maintenance of neuropathic pain. Microglia express functional Toll-like receptors (TLRs), which play pivotal roles in regulating inflammatory processes. However, little is known about the role of TLR3 in regulating neuropathic pain after PNI. Here TLR3 expression and autophagy activation was assayed in dorsal root ganglions and in microglia following PNI by using realtime PCR, western blot and immunohistochemistry...
December 21, 2016: Neurochemical Research
https://www.readbyqxmd.com/read/27989510/concurrent-bullatine-a-enhances-morphine-antinociception-and-inhibits-morphine-antinociceptive-tolerance-by-indirect-activation-of-spinal-%C3%AE%C2%BA-opioid-receptors
#19
Qian Huang, Ming-Li Sun, Yuan Chen, Xin-Yan Li, Yong-Xiang Wang
ETHNOPHARMACOLOGICAL RELEVANCE: Bullatine A, a C20-diterpenoid alkaloid and one of the major effective ingredients in Aconiti brachypodi Radix (Xue-shang-yi-zhi-hao), can block pain hypersensitivity in a variety of rodent models through expression of spinal microglial dynorphin A. AIM OF THE STUDY: To assess the interaction between bullatine A and morphine on antinociception in acute nociception and pain hypersensitivity states, with the exogenous synthetic dynorphin A as a comparison MATERIALS AND METHODS: Spinal nerve ligation-induced neuropathic rats and naïve mice were used for assessing the acute and chronic interactions of bullatine A/dynorphin A with morphine...
January 20, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27984198/effects-of-pregabalin-on-spinal-d-serine-content-and-nmda-receptor-mediated-synaptic-transmission-in-mice-with-neuropathic-pain
#20
Eiko Kato, Rie Matsuzawa, Shunsaku Kobayashi, Teruyuki Fukushima, Masao Maekawa, Yuuichi Hori
Pregabalin (PGB) is a chemical derivative of the inhibitory neurotransmitter γ-aminobutyric acid, and is successfully used for the treatment of neuropathic pain. Substantial evidence suggests that D-serine, an endogenous co-agonist at the strychnine-insensitive glycine site of the NMDA receptor, counteracts the antinociceptive actions of PGB at the level of the spinal cord. In the present study, we examined the impact of PGB treatment on spinal D-serine content and NMDA receptor-mediated synaptic transmission in the superficial dorsal horn of peripheral nerve-ligated neuropathic mice...
October 28, 2016: Neuroscience Letters
keyword
keyword
112247
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"