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Injury chronic pain

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https://www.readbyqxmd.com/read/28943756/slick-kcnt2-sodium-activated-potassium-channels-limit-peptidergic-nociceptor-excitability-and-hyperalgesia
#1
Danielle L Tomasello, Edward Hurley, Lawrence Wrabetz, Arin Bhattacharjee
The Slick (Kcnt2) sodium-activated potassium (KNa) channel is a rapidly gating and weakly voltage-dependent and sodium-dependent potassium channel with no clearly defined physiological function. Within the dorsal root ganglia (DRGs), we show Slick channels are exclusively expressed in small-sized and medium-sized calcitonin gene-related peptide (CGRP)-containing DRG neurons, and a pool of channels are localized to large dense-core vesicles (LDCV)-containing CGRP. We stimulated DRG neurons for CGRP release and found Slick channels contained within CGRP-positive LDCV translocated to the neuronal membrane...
2017: Journal of Experimental Neuroscience
https://www.readbyqxmd.com/read/28943285/ethanol-differentially-modulates-p2x4-and-p2x7-receptor-activity-and-function-in-bv2-microglial-cells
#2
Liana Asatryan, Olga Ostrovskaya, Dustin Lieu, Daryl L Davies
Neuroinflammation is one of the mechanisms leading to neurodegenerative brain damage induced by chronic alcohol (ethanol) exposure. Microglia play a major role in the development of innate immune responses to environmental injuries including ethanol. Adenosine 5″-triphosphate (ATP)-activated purinergic P2X receptor (P2XR) subtypes, P2X4Rs and P2X7Rs, are endogenously expressed in microglia and can modulate their activity. These 2 P2XR subtypes differ pharmacologically and functionally: 1) P2X4Rs are activated at lower (≤0...
September 21, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28942225/arthroscopic-deepening-trochleoplasty-for-chronic-anterior-knee-pain-after-previous-failed-conservative-and-arthroscopic-treatment-report-of-two-cases
#3
Lars Blønd
PURPOSE: A proportion of patients having years of chronic anterior knee pain(AKP) that have not responded to non-operative modalities. Trochlear dysplasia have been found to be a cause for AKP. By restoring the anatomy with a trochleoplasty procedure the patellofemoral joint is unloaded. This study is a prospective 2year follow-up study, based on two cases with chronic AKP for several years and having severe trochlear dysplasia and both were successfully treated by arthroscopic deepening trochleoplasty...
September 14, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28940094/-pain-in-patients-with-paraplegia
#4
G Landmann, E-C Chang, W Dumat, A Lutz, R Müller, A Scheel-Sailer, K Schwerzmann, N Sigajew, A Ljutow
Chronic pain is one of the most reported health problems in patients suffering from spinal cord injuries and is described by the patients as one of the most burdensome sequelae of paraplegia. Various types of pain, such as nociceptive, neuropathic and other types of pain can occur. In addition, multiple pathophysiological mechanisms based on the biopsychosocial pain model play a role in the origins of the pain. These aspects necessitate a multimodal pain management approach in this patient group. This article presents an overview of the occurrence, importance and pathophysiology of chronic pain following spinal cord injury as well as diagnostic and therapeutic approaches...
September 22, 2017: Der Schmerz
https://www.readbyqxmd.com/read/28931334/repeated-exposure-to-experimental-pain-differentiates-combat-tbi-with-and-without-ptsd
#5
Irina A Strigo, Andrea D Spadoni, Sabra S Inslicht, Alan N Simmons
Mild traumatic brain injury(mTBI) and posttraumatic stress disorder(PTSD) are highly comorbid conditions that often co-occur with chronic pain. We have shown that women with PTSD following intimate partner violence show attenuated brain response to repeated experimental pain that was related to symptoms of avoidance. The aim of this study was to extend our prior findings to males with combat trauma and to examine brain response to experimental pain in men with and without PTSD who sustained mTBI during combat...
September 20, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28929471/-delta-9-tetrahydrocannabinol-cannabidiol-in-the-treatment-of-spasticity-in-chronic-spinal-cord-injury-a-clinical-experience
#6
C Grao-Castellote, F Torralba-Collados, L M Gonzalez, M Giner-Pascual
INTRODUCTION: Spasticity in chronic spinal cord injury is a condition that can have negative repercussions on the patient's quality of life. Its treatment is complex and sometimes the outcome is insufficient. Cannabinoids have recently been used in multiple sclerosis to successfully treat spasticity that is refractory to other therapies. AIM: To quantify the clinical response of a group of patients with spastic chronic spinal cord injury to the orally administered drug delta-9-tetrahydrocannabinol-cannabidiol (Sativex ®) as medication for use in special situations...
October 1, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28928655/effects-of-simvastatin-beyond-dyslipidemia-exploring-its-antinociceptive-action-in-an-animal-model-of-complex-regional-pain-syndrome-type-i
#7
Graziela Vieira, Juliana Cavalli, Elaine C D Gonçalves, Tainara R Gonçalves, Larissa R Laurindo, Maíra Cola, Rafael C Dutra
Simvastatin is a lipid-lowering agent that blocks the production of cholesterol through inhibition of 3-hydroxy-methyl-glutaryl coenzyme A (HMG-CoA) reductase. In addition, recent evidence has suggested its anti-inflammatory and antinociceptive actions during inflammatory and pain disorders. Herein, we investigated the effects of simvastatin in an animal model of complex regional pain syndrome-type I, and its underlying mechanisms. Chronic post-ischemia pain (CPIP) was induced by ischemia and reperfusion (IR) injury of the left hind paw...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28928629/proteomic-identification-of-an-upregulated-isoform-of-annexin-a3-in-the-spinal-cords-of-rats-in-a-neuropathic-pain-model
#8
Wangyuan Zou, Wei Xu, Zongbin Song, Tao Zhong, Yingqi Weng, Changsheng Huang, Maoyu Li, Chuanlei Zhang, Xianquan Zhan, Qulian Guo
Neuropathic pain (NP) is induced by nerve damage or a disturbance in the peripheral or central nervous systems. Nerve damage causes the activation of sensitizing mechanisms in the peripheral and central nervous systems, which induces transcriptional and post-transcriptional alterations in sensory nerves. However, the underlying mechanisms of NP remain elusive. In the study, Two-dimensional gel electrophoresis (2DGE)-based comparative proteomics identified 38 differential gel spots, and 15 differentially expressed proteins (DEPs) between the sham and the chronic constriction injury (CCI)-induced neuropathic pain rats...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28927908/the-impact-of-the-standard-american-diet-in-rats-effects-on-behavior-physiology-and-recovery-from-inflammatory-injury
#9
Stacie K Totsch, Tammie L Quinn, Larissa J Strath, Laura J McMeekin, Rita M Cowell, Barbara A Gower, Robert E Sorge
BACKGROUND AND AIMS: Obesity is a significant health concern in the Western world and the presence of comorbid conditions suggests an interaction. The overlapping distributions of chronic pain populations and obesity suggests that an interaction may exist. Poor quality diet (high carbohydrates, saturated fats, omega-6 polyunsaturated fatty acids) can lead to increased adiposity which can activate immune cells independent of the activating effect of the diet components themselves. This dual action can contribute to chronic inflammation that may alter susceptibility to chronic pain and prolong recovery from injury...
September 16, 2017: Scandinavian Journal of Pain
https://www.readbyqxmd.com/read/28927648/hyperbaric-oxygenation-alleviates-chronic-constriction-injury-cci-induced-neuropathic-pain-and-inhibits-gabaergic-neuron-apoptosis-in-the-spinal-cord
#10
Huiqun Fu, Fenghua Li, Sebastian Thomas, Zhongjin Yang
BACKGROUND AND AIMS: Dysfunction of GABAergic inhibitory controls contributes to the development of neuropathic pain. We examined our hypotheses that (1) chronic constriction injury (CCI)-induced neuropathic pain is associated with increased spinal GABAergic neuron apoptosis, and (2) hyperbaric oxygen therapy (HBO) alleviates CCI-induced neuropathic pain by inhibiting GABAergic neuron apoptosis. METHODS: Male rats were randomized into 3 groups: CCI, CCI+HBO and the control group (SHAM)...
September 15, 2017: Scandinavian Journal of Pain
https://www.readbyqxmd.com/read/28925974/if-you-build-it-they-will-come-initial-experience-with-a-multi-disciplinary-pediatric-neurocritical-care-follow-up-clinic
#11
Cydni N Williams, Aileen Kirby, Juan Piantino
Pediatric Neurocritical Care diagnoses account for a large proportion of intensive care admissions. Critical care survivors suffer high rates of long-term morbidity, including physical disability, cognitive impairment, and psychosocial dysfunction. To address these morbidities in Pediatric Neurocritical Care survivors, collaboration between Pediatric Neurology and Pediatric Critical Care created a multidisciplinary follow-up clinic providing specialized evaluations after discharge. Clinic referrals apply to all Pediatric Neurocritical Care patients regardless of admission severity of illness...
September 19, 2017: Children
https://www.readbyqxmd.com/read/28922081/clinical-outcomes-following-conservative-management-of-chronic-traumatic-cervical-myelopathy-a-case-report
#12
Justin Bridges, Roberto Sandoval
BACKGROUND AND PURPOSE: There is limited evidence supporting the conservative management of patients with cervical myelopathy. The purpose of this report is to describe the intervention and outcomes of conservative physical therapy interventions for one patient with chronic cervical myelopathy. CASE DESCRIPTION: This case was a 50-year-old male who sustained a neck injury following a rear-end collision 4 years prior to this therapeutic episode. The patient presented with decreased range of motion in the cervical spine and right upper extremity, strength deficits, altered sensation, poor posture, and reported chronic cervical region pain and difficulty sleeping...
September 18, 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/28919152/erector-spinae-plane-esp-block-in-the-management-of-post-thoracotomy-pain-syndrome-a-case-series
#13
Mauricio Forero, Manikandan Rajarathinam, Sanjib Adhikary, Ki Jinn Chin
BACKGROUND AND AIMS: Post thoracotomy pain syndrome (PTPS) remains a common complication of thoracic surgery with significant impact on patients' quality of life. Management usually involves a multidisciplinary approach that includes oral and topical analgesics, performing appropriate interventional techniques, and coordinating additional care such as physiotherapy, psychotherapy and rehabilitation. A variety of interventional procedures have been described to treat PTPS that is inadequately managed with systemic or topical analgesics...
September 11, 2017: Scandinavian Journal of Pain
https://www.readbyqxmd.com/read/28915961/short-stem-total-hip-arthroplasty-potential-explanations-for-persistent-post-surgical-thigh-pain
#14
Isabel A C Baert, Enrique Lluch, Francis Van Glabbeek, Rudy Nuyts, Salim Rufai, Joanna Tuynman, Filip Struyf, Mira Meeus
Short stem uncemented femoral implants were developed with the aim of preserving proximal bone stock for future revisions, improving biomechanical reconstruction, aiding insertion through smaller incisions and potentially decreasing or limiting the incidence of thigh pain. Despite all the advantages of short stem designs, it remains unclear whether they are able to limit post-surgical thigh pain. In patients with short stem hip arthroplasty and persistent thigh pain, it is of the utmost importance to understand the potential etiologies of this chronic pain for selecting the appropriate treatment strategy...
September 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28911275/associations-between-retirement-reasons-chronic-pain-athletic-identity-and-depressive-symptoms-among-former-professional-footballers
#15
George Sanders, Clare Stevinson
BACKGROUND: Retirement from professional sport has been recognised as a major psychological stressor, and there is a need to identify factors that increase the risk of mental health problems after career termination. The current study examined associations between career-ending injury, chronic pain, athletic identity, and depressive symptomology in retired professional footballers. METHODS: A cross-sectional study was performed with 307 retired male footballers who had played within a professional United Kingdom league...
September 14, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28905348/-a-rare-complication-of-transrectal-electrostimulation-for-sperm-retrieval
#16
Jürgen Pannek, Dirk Leuth, Jens Wöllner
In men who wish to have children after a spinal cord injury, assisted ejaculation is frequently needed for sperm retrieval. Transrectal electrostimulation (TES) is often used for this purpose. Typical side effects of TES are autonomic dysreflexia or pain. In a 33-year old man with complete tetraplegia below C6 since 2004, TES caused massive leg spasticity, leading to transcervical fracture of the femoral neck. This previously unreported complication of TES demonstrates that, in men with long-term chronic tetraplegia, spasticity and osteoporosis, TES in anesthesia should be taken into consideration...
September 13, 2017: Aktuelle Urologie
https://www.readbyqxmd.com/read/28903493/editor-s-highlight-formulation-and-toxicology-evaluation-of-the-intrathecal-ayx1-dna-decoy-in-sprague-dawley-rats
#17
Julien Mamet, David C Yeomans, Tony L Yaksh, Donald C Manning, Scott Harris
The longevity of pain after surgery is debilitating and limits the recovery of patients. AYX1 is a double-stranded, unprotected, 23 base-pair oligonucleotide designed to reduce acute post-surgical pain and prevent its chronification with a single intrathecal perioperative dose. AYX1 mimics the DNA sequence normally bound by EGR1 on chromosomes, a transcription factor transiently induced in the dorsal root ganglia-spinal cord network following a noxious input. AYX1 binds to EGR1 and prevents it from launching waves of gene regulation that are necessary to maintain pain over time...
September 1, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28902622/functional-interaction-between-n-methyl-d-aspartate-receptor-and-ascorbic-acid-during-neuropathic-pain-induced-by-chronic-constriction-injury-of-the-sciatic-nerve
#18
Sepideh Saffarpour, Farinaz Nasirinezhad
BACKGROUND: Neuropathic pain is a chronic pain condition, which is resistant to therapy. Ascorbate was released because of the activation of glutaminergic neurons. Due to the important role of N-methyl-D-aspartate (NMDA) receptors in the pathophysiology of neuropathic pain, this study investigated the analgesic efficacy of ascorbic acid (AA) in neuropathic pain condition and the role of NMDA receptors in this effect. METHODS: For this purpose, adult male rats were randomly allocated to experimental groups (n=8 in each group)...
September 13, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28901961/effect-of-stretching-on-thoracolumbar-fascia-injury-and-movement-restriction-in-a-porcine-model
#19
Helene M Langevin, James Bishop, Rhonda Maple, Gary J Badger, James R Fox
OBJECTIVE: Stretching of fascia is an important component of manual and movement therapies. We previously showed that in pigs, a unilateral thoracolumbar fascia injury combined with movement restriction (hobble) produced contralateral loss of fascia mobility (shear strain during passive trunk flexion measured with ultrasound) similar to findings in human subjects with chronic low back pain. We now tested whether such abnormalities could be reversed by removing the hobble with or without daily stretching for 1 mo...
September 10, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28899427/activation-of-dorsal-horn-cannabinoid-cb2-receptor-suppresses-the-expression-of-p2y12-and-p2y13-receptors-in-neuropathic-pain-rats
#20
Juan Niu, Dujuan Huang, Rui Zhou, MingXia Yue, Tao Xu, Junna Yang, Li He, Hong Tian, XiaoHong Liu, Junwei Zeng
BACKGROUND: More evidence suggests that dorsal spinal cord microglia is an important site contributing to CB2 receptor-mediated analgesia. The upregulation of P2Y12 and P2Y13 purinoceptors in spinal dorsal horn microglia is involved in the development of pain behavior caused by peripheral nerve injury. However, it is not known whether the expression of P2Y12 and P2Y13 receptors at spinal dorsal horn will be influenced after CB2 receptor activation in neuropathic pain rats. METHODS: Chronic constriction injury (CCI) and intrathecal ADPbetaS injection were performed in rats to induce neuropathic pain...
September 12, 2017: Journal of Neuroinflammation
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