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Complex Regional Pain Syndrome (CRPS)

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https://www.readbyqxmd.com/read/27919822/astrocyte-contributes-to-pain-development-via-mmp2-jnk1-2-signaling-in-a-mouse-model-of-complex-regional-pain-syndrome
#1
Guogang Tian, Xin Luo, Chaoliang Tang, Xiang Cheng, Sookja Kim Chung, Zhengyuan Xia, Chi Wai Cheung, Qulian Guo
BACKGROUND: The activation of spinal glial cells (astrocyte and microglia) is reported in patient with complex regional pain syndrome (CRPS). However, the roles of spinal glial activities in the pathophysiology of CRPS are unclear. Here, we explored the roles of spinal astrocyte and microglia and the molecular mechanisms underlying CRPS using a mouse model of chronic post-ischemia pain (CPIP). RESULTS: CPIP injury increased the level of glial fibrillary acidic protein (GFAP, reactive astrocyte biomarker), but had no significant impact on ionized calcium binding adaptor molecule 1 (IBA1, reactive microglia biomarker), in the ipsilateral dorsal horn on post-injury day (PID) 3 when the pain threshold started to reduce significantly...
December 2, 2016: Life Sciences
https://www.readbyqxmd.com/read/27906935/long-term-prednisolone-in-post-stroke-complex-regional-pain-syndrome
#2
Jayantee Kalita, Usha Misra, Ajit Kumar, Sanjeev K Bhoi
BACKGROUND: There is no study on the long-term use of prednisolone in post-stroke complex regional pain syndrome-1 (CRPS1). OBJECTIVE: To evaluate the efficacy and safety of long-term low dose prednisolone in post-stroke CRPS-I. STUDY DESIGN: Open-labeled randomized controlled trial. SETTING: Tertiary care teaching institute. METHODS: Seventy-seven out of 396 (19.4%) patients with stroke had CRPS-1 and 58 met the inclusion criteria...
November 2016: Pain Physician
https://www.readbyqxmd.com/read/27890578/adult-complex-regional-pain-syndrome-type-i-a-narrative-review
#3
REVIEW
Martino Bussa, Adriana Mascaro, Lorena Cuffaro, Simona Rinaldi
Complex regional pain syndrome type I (CRPS I) is a multifactorial painful disorder with a complex pathogenesis. Both peripheral and central mechanisms are involved. Acute CRPS I is considered an exaggerated inflammatory disorder but over time, because of altered function of the sympathetic nervous system, and maladaptive neuroplasticity, CRPS I evolves into a neurological disorder. This review thoroughly describes the pathophysiological aspects of CRPS I and summarizes the potential therapeutic options. The mechanisms and targets of the treatment are different in the early and late stages of the disease...
November 23, 2016: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/27887906/complex-regional-pain-syndrome-associated-with-hyperattention-rather-than-neglect-for-the-healthy-side-a-comprehensive-case-study
#4
Laure Christophe, Ludovic Delporte, Patrice Revol, Annick DePaepe, Gilles Rode, Sophie Jacquin-Courtois, Yves Rossetti
Complex regional pain syndrome (CRPS) is a dehabilitating chronic condition occurring with peripheral lesions. There is growing consensus for a central contribution to CRPS. Although the nature of this central body representation disorder is increasingly debated, it has been repeatedly argued that CRPS results in motor neglect of the affected side. The present article describes a comprehensive and quantitative case report demonstrating that: (1) not all patients with chronic CRPS exhibit decreased spatial attention for the affected side and (2) patients may actually exhibit a substantial, broad and reliable attentional bias toward the painful side, akin to spatial neglect for the healthy side...
November 22, 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27867145/human-papillomavirus-vaccines-complex-regional-pain-syndrome-postural-orthostatic-tachycardia-syndrome-and-autonomic-dysfunction-a-review-of-the-regulatory-evidence-from-the-european-medicines-agency
#5
Tom Jefferson, Lars Jørgensen
Recent concerns about a possible association between exposure of young women to human papillomavirus (HPV) vaccines and two "dysautonomic syndromes" (a collection of signs and symptoms thought to be caused by autoimmunity) - complex regional pain syndrome (CRPS) and postural orthostatic tachycardia syndrome (POTS) - led the European Medicines Agency (EMA) to review existing evidence. The review was announced by the EMA on July 13, 2015, and was completed on November 4, 2015.
October 17, 2016: Indian Journal of Medical Ethics
https://www.readbyqxmd.com/read/27858687/update-on-the-effects-of-graded-motor-imagery-and-mirror-therapy-on-complex-regional-pain-syndrome-type-1-a-systematic-review
#6
Guillermo Méndez-Rebolledo, Valeska Gatica-Rojas, Rafael Torres-Cueco, María Albornoz-Verdugo, Eduardo Guzmán-Muñoz
Graded motor imagery (GMI) and mirror therapy (MT) is thought to improve pain in patients with complex regional pain syndrome (CRPS) types 1 and 2. However, the evidence is limited and analysis are not independent between types of CRPS. The purpose of this review was to analyze the effects of GMI and MT on pain in independent groups of patients with CRPS types 1 and 2. Searches for literature published between 1990 and 2016 were conducted in databases. Randomized controlled trials that compared GMI or MT with other treatments for CRPS types 1 and 2 were included...
November 11, 2016: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/27847707/relationship-between-hba1c-and-complex-regional-pain-syndrome-in-stroke-patients-with-type-2-diabetes-mellitus
#7
Jong Ho Choi, Ki Pi Yu, Yong-Soon Yoon, Eun Sil Kim, Ji Hyun Jeon
OBJECTIVE: To investigate the relationship between glycosylated hemoglobin A (HbA1c) and complex regional pain syndrome (CRPS) in stroke patients with type 2 diabetes mellitus (T2DM). METHODS: A retrospective chart review was performed of stroke patients from January 2012 to December 2013. We reviewed 331 patients and included 200 in the analysis. We divided them into CRPS and non-CRPS groups and compared them by age, gender, stroke lesion, cause of stroke, duration of T2DM, HbA1c (%), National Institutes of Health Stroke Scale score, affected shoulder flexor muscle strength, Fugl-Meyer Assessment score, motricity index, Functional Independence Measure, Korean version of Modified Barthel Index, blood glucose level on admission day, duration from stroke onset to HbA1c check, and duration from stroke onset to three-phase bone scan for CRPS diagnosis...
October 2016: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/27847313/abnormal-brain-responses-to-action-observation-in-complex-regional-pain-syndrome
#8
Jaakko Hotta, Jukka Saari, Miika Koskinen, Yevhen Hlushchuk, Nina Forss, Riitta Hari
: Patients with complex regional pain syndrome (CRPS) display various abnormalities in central motor function, and their pain is intensified when they perform or just observe motor actions. Here, we examined the abnormalities of brain responses to action observation in CRPS. We analyzed 3-T functional magnetic resonance images from 13 upper-limb CRPS patients (all females, ages 31-58 years) and 13 healthy, age- and sex-matched control subjects. The functional magnetic resonance imaging data were acquired while the subjects viewed brief videos of hand actions shown in the first-person perspective...
November 12, 2016: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/27805769/basal-ganglia-dysfunction-in-complex-regional-pain-syndrome-a-valid-hypothesis
#9
REVIEW
M Azqueta-Gavaldon, H Schulte-Göcking, C Storz, S Azad, A Reiners, D Borsook, L Becerra, E Kraft
: Complex regional pain syndrome (CRPS) is a poorly understood pain disorder of the limbs. Maladaptive cortical plasticity has been shown to play a major role in its pathophysiological presentation. Recently, there is increasing interest in the role of the basal ganglia (BG), since clinical findings and neuroimaging studies point to possible BG involvement in CRPS. CRPS symptoms are often characterized by movement disorders associated with BG dysfunction. Very frequently, dystonia and tremor are reported and, to a lesser extent, myoclonus...
November 2, 2016: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/27785090/5-lidocaine-medicated-plaster-for-the-treatment-of-chronic-peripheral-neuropathic-pain-complex-regional-pain-syndrome-and-other-neuropathic-conditions
#10
Enrique Calderón, María Eloísa Calderón-Seoane, Rafael García-Hernández, Luis Miguel Torres
OBJECTIVES: Chronic neuropathic pain and chronic complex regional pain syndrome (CRPS), in particular, are debilitating and difficult-to-treat conditions that have a strong impact on patient's quality of life. The aim of this study was to evaluate the effectiveness of 5% lidocaine-medicated plaster as add-on therapy in patients with chronic peripheral neuropathic pain conditions, including CRPS. PATIENTS AND METHODS: This was a single-center, prospective, observational study set in a specialized pain unit of a tertiary hospital in Spain...
2016: Journal of Pain Research
https://www.readbyqxmd.com/read/27781981/the-place-of-occupational-therapy-in-rehabilitation-strategies-of-complex-regional-pain-syndrome-comparative-study-of-60-cases
#11
L Rome
The purpose of the study was to assess the value of combining occupational therapy (OT) with physical therapy (PT) for the rehabilitation of complex regional pain syndrome (CRPS) and to measure its effectiveness on activities of daily life. Sixty patients with CRPS type 1 were recruited and interviewed between September 1, 2014 and February 1, 2015. Thirty patients had undergone PT and thirty had undergone PT+OT. They were administered the short-form of the "Assessment of Life Habits" questionnaire (v.3.0 LIFE-H) created in Canada...
October 2016: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/27778413/altering-conventional-to-high-density-spinal-cord-stimulation-an-energy-dose-response-relationship-in-neuropathic-pain-therapy
#12
Frank Wille, Jennifer S Breel, Eric W P Bakker, Markus W Hollmann
OBJECTIVES: To examine whether converting from conventional Spinal Cord Stimulation (SCS) to High Density (HD) SCS reduces neuropathic pain over a period of 12 months in patients with failed SCS therapy. METHODS: Retrospective, open label, single center, consecutive case series of 30 neuropathic pain patients (Failed Back Surgery Syndrome [FBSS], Complex Regional Pain Syndrome [CRPS], and polyneuropathy [NP]). Patients with an initial adequate response to conventional SCS, but in whom pain increased over time, were included (Numeric Rating Scales [NRS] >6)...
October 24, 2016: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/27773721/identification-of-krt16-as-a-target-of-an-autoantibody-response-in-complex-regional-pain-syndrome
#13
Maral Tajerian, Victor Hung, Hamda Khan, Lauren J Lahey, Yuan Sun, Frank Birklein, Heidrun H Krämer, William H Robinson, Wade S Kingery, J David Clark
OBJECTIVE: Using a mouse model of complex regional pain syndrome (CRPS), our goal was to identify autoantigens in the skin of the affected limb. METHODS: A CRPS-like state was induced using the tibia fracture/cast immobilization model. Three weeks after fracture, hindpaw skin was homogenized, run on 2-d gels, and probed by sera from fracture and control mice. Spots of interest were analyzed by liquid chromatography-mass spectroscopy (LC-MS) and the list of targets validated by examining their abundance and subcellular localization...
January 2017: Experimental Neurology
https://www.readbyqxmd.com/read/27755487/time-since-inciting-event-is-associated-with-higher-centralized-pain-symptoms-in-patients-diagnosed-with-complex-regional-pain-syndrome
#14
Goodarz Golmirzaie, Lindsay S Holland, Stephanie E Moser, Mohit Rastogi, Afton L Hassett, Chad M Brummett
BACKGROUND AND OBJECTIVES: We hypothesized that patients with complex regional pain syndrome (CRPS) with a longer time since their inciting event would demonstrate more symptoms of centralized pain. METHODS: We conducted a cross-sectional analysis of 160 patients with CRPS using validated measures of pain, negative mood, and functioning at the time of their new patient evaluation. The 2011 Fibromyalgia Survey Criteria is a validated self-report measure of widespread body pain and comorbid symptoms (eg, trouble thinking, headaches)...
November 2016: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/27739179/a-comprehensive-outcome-specific-review-of-the-use-of-spinal-cord-stimulation-for-complex-regional-pain-syndrome
#15
Ognjen Visnjevac, Shrif Costandi, Bimal A Patel, Girgis Azer, Priya Agarwal, Robert Bolash, Nagy A Mekhail
BACKGROUND: Complex regional pain syndrome (CRPS) is a painful, debilitating affliction that is often difficult to treat. It has become common international practice to use spinal cord stimulation (SCS) for the treatment of CRPS as other therapies fail to provide adequate relief, quality of life, or improvement in function. This comprehensive outcome-specific systematic review of the use of SCS for CRPS was performed to elucidate the available evidence with focus on clinically relevant patient-specific outcomes...
October 14, 2016: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/27738506/reduction-in-mechanical-allodynia-in-complex-regional-pain-syndrome-patients-with-ultrasound-guided-pulsed-radiofrequency-treatment-of-the-superficial-peroneal-nerve
#16
Won Soek Chae, Sang Hyun Kim, Sung Hwan Cho, Joon Ho Lee, Mi Sun Lee
The superficial peroneal nerve is vulnerable to damage from ankle sprain injuries and fractures as well as surgery to this region. And it is also one of the most commonly involved nerves in complex regional pain syndrome type II in the foot and ankle region. We report two cases of ultrasound-guided pulsed radiofrequency treatment of superficial peroneal nerve for reduction of allodynia in CRPS patients.
October 2016: Korean Journal of Pain
https://www.readbyqxmd.com/read/27726920/a-rare-complication-of-total-knee-arthroplasty-type-l-complex-regional-pain-syndrome-of-the-foot-and-ankle
#17
Gözde Özcan Söylev, Hakan Boya
Complex regional pain syndrome (CRPS) is a painful and disabling disorder that usually affects the extremities. This complication may affect the knee joint after total knee arthroplasty (TKA). We report a unique case of CRPS of the foot and ankle, which was an unusual involvement site for CRPS after TKA.
October 7, 2016: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/27717112/activation-of-cannabinoid-receptor-2-attenuates-mechanical-allodynia-and-neuroinflammatory-responses-in-a-chronic-post-ischemic-pain-model-of-complex-regional-pain-syndrome-type-i-in-rats
#18
Jijun Xu, Yuying Tang, Mian Xie, Bihua Bie, Jiang Wu, Hui Yang, Joseph F Foss, Bin Yang, Richard W Rosenquist, Mohamed Naguib
Complex regional pain syndrome type 1 (CRPS-I) remains one of the most clinically challenging neuropathic pain syndromes and its mechanism has not been fully characterized. Cannabinoid receptor 2 (CB2) has emerged as a promising target for treating different neuropathic pain syndromes. In neuropathic pain models, activated microglia expressing CB2 receptors are seen in the spinal cord. Chemokine fractalkine receptor (CX3CR1) plays a substantial role in microglial activation and neuroinflammation. We hypothesized that a CB2 agonist could modulate neuroinflammation and neuropathic pain in an ischemia model of CRPS by regulating CB2 and CX3CR1 signaling...
September 26, 2016: European Journal of Neuroscience
https://www.readbyqxmd.com/read/27714945/preferred-frequencies-and-waveforms-for-spinal-cord-stimulation-in-patients-with-complex-regional-pain-syndrome-a-multicentre-double-blind-randomized-and-placebo-controlled-crossover-trial
#19
N Kriek, J G Groeneweg, D L Stronks, D de Ridder, F J P M Huygen
BACKGROUND: Conventional tonic spinal cord stimulation (SCS) is an effective treatment for patients with therapy-resistant complex regional pain syndrome (CRPS). Although the therapeutic effect of SCS can diminish over time due to tolerance, pain control can be regained by changing the pulse width and the amplitude and/or by increasing the stimulation frequency. This multicentre, double-blind, randomized and placebo-controlled crossover trial was conducted to investigate whether more effective pain reduction is achieved with different frequencies (trial registration, current controlled trials, ISRCTN 36655259)...
October 7, 2016: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/27689422/intraoperative-electrophysiological-monitoring-for-c1-2-spinal-cord-stimulation
#20
Laura M Muncie, Nathaniel R Ellens, Emeline Tolod-Kemp, Claudio A Feler, John S Winestone
OBJECTIVE This study is a retrospective case series involving C1-2 spinal cord stimulation in patients with complex regional pain syndrome (CRPS) under general endotracheal anesthesia. Currently, C1-2 paddle lead placement is an accepted practice, which provides effective cervical stimulation to ameliorate upper-extremity and sometimes lower-extremity symptoms experienced by patients with CRPS. However, this technique must be performed under general endotracheal anesthesia rather than in an awake or semiconscious state due to intraoperative safety concerns and patient comfort...
September 30, 2016: Journal of Neurosurgery. Spine
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