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"Central Sensitization"

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https://www.readbyqxmd.com/read/28182698/prevention-of-remifentanil-induced-postoperative-hyperalgesia-by-dexmedetomidine-via-regulating-the-trafficking-and-function-of-spinal-nmda-receptors-as-well-as-pkc-and-camkii-level-in-vivo-and-in-vitro
#1
Yuan Yuan, Zhe Sun, Yi Chen, Yuxin Zheng, Ke-Liang Xie, Ying He, Zhifen Wang, Guo-Lin Wang, Yong-Hao Yu
Remifentanil-induced secondary hyperalgesia has been demonstrated in both animal experiments and clinical trials. Enhancement of N-methyl-D-aspartate (NMDA) receptor trafficking as well as protein kinase C (PKC) and calmodulin-dependent protein kinase II (CaMKII) have been reported to be involved in the induction and maintenance of central sensitization. In the current study, it was demonstrated that dexmedetomidine could prevent remifentanil-induced hyperalgesia (RIH) via regulating spinal NMDAR-PKC-Ca2+/ CaMKII pathway in vivo and in vitro...
2017: PloS One
https://www.readbyqxmd.com/read/28162560/-322-sleep-mediates-the-relationship-between-central-sensitization-and-clinical-pain
#2
E Burton, C Campbell, M Robinson, S Bounds, L Buenaver, M Smith
No abstract text is available yet for this article.
April 2016: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28162558/-320-ethnic-differences-in-central-sensitization-among-patients-with-knee-osteoarthritis
#3
T Walls, C Campbell, M Robinson, S Bounds, L Buenaver, M Smith
No abstract text is available yet for this article.
April 2016: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28162557/-319-the-role-of-central-sensitization-in-pain-hypersensitivity-in-individuals-with-symptoms-of-migraine-headache
#4
M Nye, R Haney, S You, S Albu, M Meagher
No abstract text is available yet for this article.
April 2016: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28162378/-156-pain-catastrophizing-moderates-the-relationship-between-self-report-and-objective-measures-of-sleep-continuity-and-clinical-pain-and-central-sensitization-in-women-with-tmd
#5
S Lerman Zohar, L Buenaver, M Redding, J Richards, C Campbell, J Haythornthwaite, M Smith
No abstract text is available yet for this article.
April 2016: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28161767/pain-extent-is-associated-with-pain-intensity-but-not-with-widespread-pressure-or-thermal-pain-sensitivity-in-women-with-fibromyalgia-syndrome
#6
Marco Barbero, César Fernández-de-Las-Peñas, María Palacios-Ceña, Corrado Cescon, Deborah Falla
Widespread pain is considered a sign of central sensitization in people with chronic pain. Our aim was to examine whether pain extent, assessed from the pain drawing, relates to measures from quantitative sensory testing in fibromyalgia syndrome (FMS). Thirty women with FMS and no other co-morbid conditions completed pain drawings (dorsal and ventral views) and clinical and related disability questionnaires. Pain extent and pain frequency maps were obtained from the pain drawings using a novel customized software...
February 4, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28161248/how-is-chronic-pain-related-to-sympathetic-dysfunction-and-autonomic-dysreflexia-following-spinal-cord-injury
#7
Edgar T Walters
Autonomic dysreflexia (AD) and neuropathic pain occur after severe injury to higher levels of the spinal cord. Mechanisms underlying these problems have rarely been integrated in proposed models of spinal cord injury (SCI). Several parallels suggest significant overlap of these mechanisms, although the relationships between sympathetic function (dysregulated in AD) and nociceptive function (dysregulated in neuropathic pain) are complex. One general mechanism likely to be shared is central sensitization - enhanced responsiveness and synaptic reorganization of spinal circuits that mediate sympathetic reflexes or that process and relay pain-related information to the brain...
January 27, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28158158/prevention-of-post-herpetic-neuralgia-from-dream-to-reality-a-ten-step-model
#8
Mohamed Younis Makharita
Herpes zoster (HZ) is a painful, blistering skin eruption in a dermatomal distribution caused by reactivation of a latent varicella zoster virus in the dorsal root ganglia (DRG). Post-herpetic neuralgia (PHN) is the most common complication of acute herpes zoster (AHZ).Severe prodrome, greater acute pain and dermatomal injury, and the density of the eruption are the risk factors and predictors for developing PHN. PHN has a substantial effect on the quality of life; many patients develop severe physical, occupational, social, and psychosocial disabilities as a result of the unceasing pain...
February 2017: Pain Physician
https://www.readbyqxmd.com/read/28158149/a-systematic-review-on-the-prevalence-etiology-and-pathophysiology-of-intrinsic-pain-in-dermal-scar-tissue
#9
Eveline Bijlard, Lisa Uiterwaal, Casimir A E Kouwenberg, Marc A M Mureau, Steven E R Hovius, Frank J P M Huygen
BACKGROUND: Scars can cause pain, even without symptoms of underlying nerve damage. A lack of knowledge on intrinsic scar pain hampers effective treatment of these complaints. OBJECTIVE: Aggregate current knowledge on the prevalence, etiology, and pathophysiology of intrinsic pain in dermal scars. STUDY DESIGN: Systematic review. SETTING: University Medical Center. METHODS: We searched the Embase, Medline, Cochrane central, CINAHL, Web-of-Science, and Pubmed databases with search terms: scar, skin, pain, and etiology/pathology, adding all synonyms of these terms...
February 2017: Pain Physician
https://www.readbyqxmd.com/read/28153123/temporomandibular-disorders-and-painful-comorbidities-clinical-association-and-underlying-mechanisms
#10
Yuri Martins Costa, Paulo César Rodrigues Conti, Flavio Augusto Cardoso de Faria, Leonardo Rigoldi Bonjardim
The association between temporomandibular disorders (TMDs) and headaches, cervical spine dysfunction, and fibromyalgia is not artefactual. The aim of this review is to describe the comorbid relationship between TMD and these three major painful conditions and to discuss the clinical implications and the underlying pain mechanisms involved in these relationships. Common neuronal pathways and central sensitization processes are acknowledged as the main factors for the association between TMD and primary headaches, although the establishment of cause-effect mechanisms requires further clarification and characterization...
March 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28146319/unimpaired-endogenous-pain-inhibition-in-the-early-phase-of-complex-regional-pain-syndrome
#11
N Kumowski, T Hegelmaier, J Kolbenschlag, C Maier, T Mainka, J Vollert, E Enax-Krumova
BACKGROUND: The complex regional pain syndrome (CRPS) is characterized by distal generalisation of pain beyond the initial trauma. This might be the result of impaired endogenous pain inhibition. METHOD: We compared Conditioned Pain Modulation (CPM) between patients with CRPS (n = 24; pain: 4.5 ± 2.2, NRS 0-10; disease duration <1 year), neuralgia (n = 17; pain: 5.5 ± 1.1) and healthy subjects (n = 23) and its correlation with loss and gain of function as assessed by Quantitative Sensory Testing (QST)...
February 1, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28146317/attentional-performance-may-help-to-identify-duloxetine-responders-in-chronic-pain-fibromyalgia-patients
#12
G Schmidt, R Alvarenga, A Manhães, S Schmidt
BACKGROUND: Long-term pain affects brain in response to attention tasks. This study aimed to verify the relationship between performance in a computerized visual attention test (CVAT) and response to duloxetine in fibromyalgia patients. Duloxetine is approved for the treatment but the response is not immediate. METHODS: Patients were drawn from a sample of 74 patients with chronic pain. These patients were selected because they kept their subjective perceptions of pain as severe after 1 week of duloxetine treatment...
February 1, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28139238/new-developments-in-the-medical-treatment-of-endometriosis
#13
REVIEW
Mohamed A Bedaiwy, Sukinah Alfaraj, Paul Yong, Robert Casper
Endometriosis affects 1 in 10 women of reproductive-age. The current treatments are surgical and hormonal but have limitations, including the risk of recurrence, side effects, contraceptive action for women who desire pregnancy, and cost. New treatments include gonadotropin-releasing hormone analogues, selective progesterone (or estrogen) receptor modulators, aromatase inhibitors, immunomodulators, and antiangiogenic agents. Further research is needed into central sensitization, local neurogenesis, and the genetics of endometriosis to identify additional treatment targets...
January 27, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28119767/effects-of-applying-nerve-blocks-to-prevent-postherpetic-neuralgia-in-patients-with-acute-herpes-zoster-a-systematic-review-and-meta-analysis
#14
REVIEW
Hyun Jung Kim, Hyeong Sik Ahn, Jae Young Lee, Seong Soo Choi, Yu Seon Cheong, Koo Kwon, Syn Hae Yoon, Jeong Gill Leem
BACKGROUND: Postherpetic neuralgia (PHN) is a common and painful complication of acute herpes zoster. In some cases, it is refractory to medical treatment. Preventing its occurrence is an important issue. We hypothesized that applying nerve blocks during the acute phase of herpes zoster could reduce PHN incidence by attenuating central sensitization and minimizing nerve damage and the anti-inflammatory effects of local anesthetics and steroids. METHODS: This systematic review and meta-analysis evaluates the efficacy of using nerve blocks to prevent PHN...
January 2017: Korean Journal of Pain
https://www.readbyqxmd.com/read/28107590/endocannabinoid-activation-of-cb1-receptors-contributes-to-long-lasting-reversal-of-neuropathic-pain-by-repetitive-spinal-cord-stimulation
#15
L Sun, L Tai, Q Qiu, R Mitchell, S Fleetwood-Walker, E A Joosten, C W Cheung
BACKGROUND: Spinal cord stimulation (SCS) has been shown to be effective in the management of certain neuropathic pain conditions, however, the underlying mechanisms are incompletely understood. In this study, we investigated repetitive SCS in a rodent neuropathic pain model, revealing long-lasting and incremental attenuation of hyperalgesia and a mechanism of action involving endocannabinoids. METHOD: Animals were implanted with monopolar electrodes at the time of partial sciatic nerve injury...
January 20, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28106318/reduced-laser-evoked-potential-habituation-detects-abnormal-central-pain-processing-in-painful-radiculopathy-patients
#16
P Hüllemann, C von der Brelie, G Manthey, J Düsterhöft, A K Helmers, M Synowitz, R Baron
BACKGROUND: Repetitive painful laser stimuli lead to physiological laser-evoked potential (LEP) habituation, measurable by a decrement of the N2/P2 amplitude. The time course of LEP-habituation is reduced in the capsaicin model for peripheral and central sensitization and in patients with migraine and fibromyalgia. In the present investigation, we aimed to assess the time course of LEP-habituation in a neuropathic pain syndrome, i.e. painful radiculopathy. METHODS: At the side of radiating pain, four blocks of 25 painful laser stimuli each were applied to the ventral thigh at the L3 dermatome in 27 patients with painful radiculopathy...
January 20, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28100749/promoted-interaction-of-c-ebp%C3%AE-with-demethylated-cxcr3-gene-promoter-contributes-to-neuropathic-pain-in-mice
#17
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/28067693/intraoperative-ketamine-reduces-immediate-postoperative-opioid-consumption-after-spinal-fusion-surgery-in-chronic-pain-patients-with-opioid-dependency-a-randomized-blinded-trial
#18
Rikke Vibeke Nielsen, Jonna Storm Fomsgaard, Hanna Siegel, Robertas Martusevicius, Lone Nikolajsen, Jørgen Berg Dahl, Ole Mathiesen
Perioperative handling of surgical patients with opioid dependency represents an important clinical problem. Animal studies suggest that ketamine attenuates central sensitization and hyperalgesia and thereby reduces postoperative opioid tolerance. We hypothesized that intraoperative ketamine would reduce immediate postoperative opioid consumption compared with placebo in chronic pain patients with opioid dependency undergoing lumbar spinal fusion surgery. Primary outcome was morphine consumption 0 to 24 hours postoperatively...
March 2017: Pain
https://www.readbyqxmd.com/read/28060062/pilot-study-of-corneal-sensitivity-and-its-association-in-keratoconus
#19
Preeji S Mandathara, Fiona J Stapleton, Jim Kokkinakis, Mark D P Willcox
PURPOSE: To evaluate corneal sensitivity and its association with other clinical parameters in keratoconus. METHODS: Twenty-four subjects with keratoconus aged between 18 and 65 years were recruited in this cross-sectional study. Ocular symptoms, corneal topography, tear variables such as tear osmolarity, volume and lower tear meniscus height, ocular surface staining, central sensitivity threshold (CST), and corneal subepithelial nerve mapping were obtained. Association between central CST and other clinical variables was examined using the Spearman correlation coefficient...
February 2017: Cornea
https://www.readbyqxmd.com/read/28057535/the-nitric-oxide-donor-isosorbide-dinitrate-induces-a-cephalic-cutaneous-hypersensitivity-associated-with-sensitization-of-the-medullary-dorsal-horn
#20
José María Flores Ramos, Laurent Devoize, Amélie Descheemaeker, Jean-Louis Molat, Philippe Luccarini, Radhouane Dallel
Nitric oxide donors are known to produce headache in healthy as well as migraine subjects, and to induce extracephalic cutaneous hypersensitivity in rodents. However, little is known on the effect of nitric oxide donors on cephalic cutaneous sensitivity. Combining behavioral, immunohistochemical, and in vivo electrophysiological approaches, this study investigated the effect of systemic administration of the nitric oxide donor, isosorbide dinitrate (ISDN), on cephalic and extracephalic cutaneous sensitivity and on neuronal activation within the medullary dorsal horn (MDH) in the rat...
March 6, 2017: Neuroscience
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