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"Central Sensitization"

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https://www.readbyqxmd.com/read/28536900/hopes-for-the-future-of-pain-control
#1
REVIEW
Kirsty Bannister, Mateusz Kucharczyk, Anthony H Dickenson
Here we aim to present an accessible review of the pharmacological targets for pain management, and succinctly discuss the newest trends in pain therapy. A key task for current pain pharmacotherapy is the identification of receptors and channels orchestrating nociception. Notwithstanding peripheral alterations in the receptors and channels following pathophysiological events, the modulatory mechanisms in the central nervous system are also fundamental to the regulation of pain perception. Bridging preclinical and clinical studies of peripheral and central components of pain modulation, we present the different types of pain and relate these to pharmacological interventions...
May 23, 2017: Pain and Therapy
https://www.readbyqxmd.com/read/28535557/endogenous-pain-facilitation-rather-than-inhibition-differs-between-people-with-chronic-fatigue-syndrome-multiple-sclerosis-and-controls-an-observational-study
#2
Simon M Collin, Jo Nijs, Mira Meeus, Andrea Polli, Barbara Willekens, Kelly Ickmans
BACKGROUND: Commonalities in the core symptoms of fatigue and cognitive dysfunction experienced by chronic fatigue syndrome (CFS, also known as ME) and multiple sclerosis (MS) patients have been described. Many CFS and MS patients also experience chronic pain, which has been attributed to central sensitization in both groups of patients. However, the characteristics of pain in CFS and MS patients have not been compared. OBJECTIVES: To compare experimental pain measurements in patients with CFS or MS and healthy controls...
May 2017: Pain Physician
https://www.readbyqxmd.com/read/28527083/shared-mechanisms-of-epilepsy-migraine-and-affective-disorders
#3
Davide Zarcone, Simona Corbetta
Since the nineteenth century several clinical features have been observed in common between migraine and epilepsy (such as episodic attacks, triggering factors, presence of aura, frequent familiarity), but only in recent years researchers have really engaged in finding a common pathogenic mechanism. From studies of disease incidence, we understand how either migraine among patients with epilepsy or epilepsy among migraine patients are more frequent than in the general population. This association may result from a direct causality, by the same environmental risk factors and/or by a common genetic susceptibility...
May 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28523574/medical-management-of-pain-in-chronic-pancreatitis
#4
REVIEW
Vikesh K Singh, Asbjørn M Drewes
The medical management of pain in chronic pancreatitis continues to pose significant challenges for clinicians caring for these patients. There are increasing data, suggesting that pain in chronic pancreatitis is largely due to peripheral and central sensitization that evolves, over time, as a result of nociceptive afferent associated with chronic inflammation and fibrosis of the pancreas. In many instances, patients rapidly progress to requiring opioid analgesics for the adequate treatment of pain despite the unequivocal risks associated with the long-term use of these drugs...
May 18, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28520841/chronic-inflammatory-pain-impairs-mglur5-mediated-depolarization-induced-suppression-of-excitation-in-the-anterior-cingulate-cortex
#5
Baolin Guo, Jiaqi Wang, Han Yao, Keke Ren, Jing Chen, Jing Yang, Guohong Cai, Haiying Liu, Yunlong Fan, Wenting Wang, Shengxi Wu
The anterior cingulate cortex (ACC) is a critical hub for nociceptive perception and pain-related anxiety. Long-term synaptic plasticity in ACC was found to be important for chronic inflammatory pain and pain-related anxiety. As short-term synaptic plasticity, depolarization-induced suppression of excitation (DSE) is involved in several conditions, such as chronic stress, epilepsy, and autism. However, it is still unknown whether DSE in the ACC is involved in the central sensitization of pain and anxiety. Using a whole-cell patch clamp, calcium imaging, western blot, and behavioral testing, we found that DSE was induced by a 2 s depolarization in postsynaptic pyramidal cells in ACC...
May 17, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28514231/preoperative-pain-neuroscience-education-combined-with-knee-joint-mobilization-for-knee-osteoarthritis-a-randomized-controlled-trial
#6
Enrique Lluch, Lirios Dueñas, Deborah Falla, Isabel Baert, Mira Meeus, Jose Sánchez-Frutos, Jo Nijs
OBJECTIVES: This study aimed to first compare the effects of a preoperative treatment combining pain neuroscience education (PNE) with knee joint mobilization versus biomedical education with knee joint mobilization on central sensitization (CS) in patients with knee osteoarthritis, both before and after surgery. Second, we wanted to compare the effects of both interventions on knee pain, disability, and psychosocial variables. MATERIALS AND METHODS: Forty-four patients with knee osteoarthritis were allocated to receive 4 sessions of either PNE combined with knee joint mobilization or biomedical education with knee joint mobilization before surgery...
May 16, 2017: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28507605/diclofenac-potassium-for-oral-solution-cambia-%C3%A2-in-the-acute-management-of-a-migraine-attack-clinical-evidence-and-practical-experience
#7
REVIEW
Shivang Joshi, Alan M Rapoport
Migraine headache affects about 12% of Western populations and is the third most common disease worldwide (sixth in terms of disability). In 1993, triptans were introduced in the United States as a new treatment for managing migraine attacks, but their use is limited by lack of response and safety concerns in some patients. Treatment options for patients with migraine who fail or cannot tolerate triptans include switching to another medication or adding an adjunctive medication. Desirable characteristics reported by patients for acute treatment of migraine attacks include complete pain relief, fast onset of action, and no pain recurrence...
April 2017: Therapeutic Advances in Neurological Disorders
https://www.readbyqxmd.com/read/28507594/pain-threshold-reflects-psychological-traits-in-patients-with-chronic-pain-a-cross-sectional-study
#8
Fumie Kato, Tetsuya Abe, Kenji Kanbara, Ikumi Ban, Tadashi Kiba, Sadanobu Kawashima, Yukie Saka, Yasuyuki Mizuno, Mikihiko Fukunaga
BACKGROUND: Chronic pain enhances sensory sensitivity and induces the biased development of psychological traits such as depression and pain catastrophizing, leading to the formation of heterogeneous conditions. Fluctuations in the sensory-related thresholds of non-injured sites (with normal peripheral tissue) in patients with chronic pain are thought to be related to central sensitization. The objectives of this study were to analyze the association between pain tolerance thresholds (PTTs) in non-injured sites and the psychological traits of patients with chronic pain and to evaluate the usefulness of PTT measures in assessments of pathological conditions related to chronic pain...
2017: BioPsychoSocial Medicine
https://www.readbyqxmd.com/read/28500623/simultaneous-inhibition-of-nmda-and-mglu1-5-receptors-by-levo-corydalmine-in-rat-spinal-cord-attenuates-bone-cancer-pain
#9
Wen-Ling Dai, Bing Yan, Nan Jiang, Juan-Juan Wu, Xiu-Feng Liu, Ji-Hua Liu, Bo-Yang Yu
Bone cancer pain is a challenge for its not completely clarified mechanism and broad clinical morbidity. Therefore, novel and more effective drugs are urgent needed for improvement of patients' quality of life. Glutamate receptors have been associated with the development of the central sensitization of chronic pain. Inhibition of N-methyl-D-aspartate (NMDA) and metabotropic glutamate (mGlu) receptors can effectively attenuate bone cancer pain respectively. Herein, our results indicated that levo-Corydalmine (l-CDL), a compound from Corydalis yanhusuo W...
May 13, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28497343/bdnf-contributes-to-spinal-long-term-potentiation-and-mechanical-hypersensitivity-via-fyn-mediated-phosphorylation-of-nmda-receptor-glun2b-subunit-at-tyrosine-1472-in-rats-following-spinal-nerve-ligation
#10
Song Li, Jie Cai, Zhi-Bo Feng, Zi-Run Jin, Bo-Heng Liu, Hong-Yan Zhao, Hong-Bo Jing, Tian-Jiao Wei, Guan-Nan Yang, Ling-Yu Liu, Yan-Jun Cui, Guo-Gang Xing
Previously we have demonstrated that brain-derived neurotrophic factor (BDNF) contributes to spinal long-term potentiation (LTP) and pain hypersensitivity through activation of GluN2B-containing N-methyl-D-aspartate (GluN2B-NMDA) receptors in rats following spinal nerve ligation (SNL). However, the molecular mechanisms by which BDNF impacts upon GluN2B-NMDA receptors and spinal LTP still remain unclear. In this study, we first documented that Fyn kinase-mediated phosphorylation of GluN2B subunit at tyrosine 1472 (pGluN2B(Y1472)) was involved in BDNF-induced spinal LTP and pain hypersensitivity in intact rats...
May 11, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28494216/cough-reflex-hypersensitivity-a-role-for-neurotrophins
#11
Ahmed Z El-Hashim, Sahar M Jaffal
Cough is one of the most common complaints for which sufferers seek medical assistance. However, currently available drugs are not very effective in treating cough, particularly that which follows an upper respiratory tract infection. Nonetheless, there has been a significant increase in our understanding of the mechanisms and pathways of the defensive cough as well as the hypersensitive/pathophysiological cough, both at airway and central nervous system (CNS) levels. Numerous molecules and signaling pathways have been identified as potential targets for antitussive drugs, including neurotrophins (NTs)...
March 2017: Experimental Lung Research
https://www.readbyqxmd.com/read/28488779/nociceptor-plasticity-a-closer-look
#12
REVIEW
Pace Maria Caterina, Passavanti Maria Beatrice, De Nardis Lorenzo, Bosco Fabio, Sansone Pasquale, Pota Vincenzo, Barbarisi Manlio, Palagiano Antonio, Iannotti Fabio Arturo, Panza Elisabetta, Aurilio Caterina
Nociceptors are receptors specifically involved in detecting a tissue damage and transducing it in an electrical signal. Nociceptor activation provoked by any kind of acute lesion is related to the release of several mediators of inflammation, within the framework of a process defined as "peripheral sensitization". This results in an exaggerated response to the painful stimulus, clinically defined as "primary hyperalgesia". The concept of "neuroplasticity" may explain the adaptive mechanisms carried out by the Nervous System in relation to a "harmful" damage; also, neuroplasticity mechanisms are also fundamental for rehabilitative intervention protocols...
May 10, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28479522/central-sensitization-inventory-as-a-predictor-of-worse-quality-of-life-measures-and-increased-length-of-stay-following-spinal-fusion
#13
E Emily Bennett, Kevin M Walsh, Nicolas R Thompson, Ajit A Krishnaney
BACKGROUND: Central sensitization (CS) is an abnormal and intense enhancement of pain mechanism by the central nervous system. Patients with CS may be at higher risk of poor outcomes following spinal fusion. The Central Sensitivity Inventory or Index (CSI) was developed to identify and quantify key symptoms related to CS. METHODS: Evaluate retrospectively pretreatment CSI as a predictor of post-operative quality of life (QOL) measures, length of stay (LOS), and discharge status in patients who underwent thoracic and/or lumbar fusion...
May 4, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28449376/psychological-distress-and-widespread-pain-contribute-to-the-variance-of-the-central-sensitization-inventory-a-cross-sectional-study-in-patients-with-chronic-pain
#14
C P van Wilgen, P J Vuijk, J Kregel, L Voogt, M Meeus, F Descheemaker, D Keizer, J Nijs
OBJECTIVES: Central sensitization (CS) implies increased sensitivity of the nervous system, resulting in increased pain sensitivity as well as widespread pain. Recently, the Central Sensitization Inventory (CSI) was developed to assess symptoms of CS and central sensitivity syndromes. The aim of this study was to examine the convergent validity of the CSI by comparing the outcome to psychosocial factors and clinical features of CS. METHODS: In a cross-sectional explorative study, patients with chronic pain completed multiple questionnaires, including the CSI, pain catastrophizing scale, SCL-90 for psychological distress, duration of pain, intensity of pain, widespread pain, and lateralization of pain...
April 27, 2017: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/28432601/neuropathic-pain-central-vs-peripheral-mechanisms
#15
REVIEW
Kathleen Meacham, Andrew Shepherd, Durga P Mohapatra, Simon Haroutounian
PURPOSE OF REVIEW: Our goal is to examine the processes-both central and peripheral-that underlie the development of peripherally-induced neuropathic pain (pNP) and to highlight recent evidence for mechanisms contributing to its maintenance. While many pNP conditions are initiated by damage to the peripheral nervous system (PNS), their persistence appears to rely on maladaptive processes within the central nervous system (CNS). The potential existence of an autonomous pain-generating mechanism in the CNS creates significant implications for the development of new neuropathic pain treatments; thus, work towards its resolution is crucial...
June 2017: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/28419379/central-sensitization-is-modulated-following-trigger-point-anesthetization-in-patients-with-chronic-pain-from-whiplash-trauma-a-double-blind-placebo-controlled-crossover-study
#16
N Ake Nystrom, Michael D Freeman
Objective. : Central sensitization (CS) with low peripheral pain thresholds (PPTs) is a common finding among patients with chronic pain after whiplash (CPWI). While it has been proposed that myofascial myofascial trigger points (MTrPs) may act as modulators of central sensitization, previously reported findings are conflicting and inconclusive. The present study was designed to investigate immediate responsiveness of CS to alterations in nociceptive input. Design.:  Controlled, double-blind, cross-over...
April 17, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28417083/effects-of-turmeric-curcuminoids-and-metformin-against-central-sensitivity-to-pain-in-mice
#17
Suruchi Verma, Deepak Mundkinajeddu, Amit Agarwal, Shyam Sunder Chatterjee, Vikas Kumar
The reported experimental study was conducted to compare the effects of repeated daily oral doses of curcuminoids (CLE) with metformin as potential antidepressants and analgesics. Effects of a single and ten daily oral doses of CLE (5, 20, 80 mg/kg/day) and of 50 mg/kg/day metformin (MET) were compared in mice hot plate test (HPT) for analgesics. On the 11th treatment day, all animals were subjected to foot shock stress triggered hyperthermia test, and on the 12th treatment day to tail suspension test (TST) for antidepressants...
April 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28413058/erythromelalgia-identification-of-a-corticosteroid-responsive-subset
#18
Gabriel L Pagani-Estévez, Paola Sandroni, Mark D Davis, James C Watson
BACKGROUND: Corticosteroids (CS) may benefit certain patients with erythromelalgia. OBJECTIVES: Our objective was to determine clinical predictors of corticosteroid-responsive erythromelalgia. METHODS: Patients with erythromelalgia who received CS were identified and stratified into corticosteroid nonresponders (NRs), partial corticosteroid responders (PSRs), complete corticosteroid responders (CSRs), and steroid responders (SRs = PSRs + CSRs)...
March 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28403431/differences-between-women-with-traumatic-and-idiopathic-chronic-neck-pain-and-women-without-neck-pain-interrelationships-among-disability-cognitive-deficits-and-central-sensitization
#19
Iris Coppieters, Robby De Pauw, Jeroen Kregel, Anneleen Malfliet, Dorien Goubert, Dorine Lenoir, Barbara Cagnie, Mira Meeus
Background: To date, a clear differentiation of disability, cognitive deficits, and central sensitization between chronic neck pain of a traumatic nature and that of a nontraumatic nature is lacking. Objective: This study aimed to examine differences in disability, cognitive deficits, and central sensitization between women with traumatic and idiopathic (nontraumatic) chronic neck pain and women who were healthy. In addition, interrelationships among these variables were investigated...
March 1, 2017: Physical Therapy
https://www.readbyqxmd.com/read/28394827/fibromyalgia-a-missed-comorbidity-in-spondyloarthritis-prevalence-and-impact-on-assessment-and-treatment
#20
Philip J Mease
PURPOSE OF REVIEW: Fibromyalgia is a clinical representation of the neurobiological phenomenon of central sensitization, characterized by chronic widespread pain, fatigue, sleep disturbance, and other symptoms. Fibromyalgia may occur in conjunction with chronic rheumatic diseases, driven by the effects of chronic pain and inflammation and likely influenced by the patient's genetic and psychoemotional background. This article reviews the data on prevalence of concomitant fibromyalgia and its impact on disease assessment in patients with spondyloarthritis (SpA) and psoriatic arthritis (PsA)...
April 7, 2017: Current Opinion in Rheumatology
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