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"Central Sensitization"

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https://www.readbyqxmd.com/read/28934789/lack-of-gender-and-age-differences-in-pain-measurements-following-exercise-in-people-with-chronic-whiplash-associated-disorders
#1
Kelly Ickmans, Anneleen Malfliet, Margot De Kooning, Lisa Goudman, Ives Hubloue, Tom Schmitz, Dorien Goubert, Maria Encarnacion Aguilar-Ferrandiz
BACKGROUND: Individuals with chronic whiplash associated disorders (WAD) present persistent pain in the absence of structural pathology. In these people, altered central pain processing and central sensitization are observed. The role of personal factors, such as gender and age, on pain processing mechanisms in chronic WAD, however, is still unclear. OBJECTIVES: This study investigated possible gender- and age-related differences in self-reported and experimental pain measurements in people with chronic WAD...
September 2017: Pain Physician
https://www.readbyqxmd.com/read/28932132/central-sensitization-based-classification-for-temporomandibular-disorders-a-pathogenetic-hypothesis
#2
REVIEW
Annalisa Monaco, Ruggero Cattaneo, Maria Chiara Marci, Davide Pietropaoli, Eleonora Ortu
Dysregulation of Autonomic Nervous System (ANS) and central pain pathways in temporomandibular disorders (TMD) is a growing evidence. Authors include some forms of TMD among central sensitization syndromes (CSS), a group of pathologies characterized by central morphofunctional alterations. Central Sensitization Inventory (CSI) is useful for clinical diagnosis. Clinical examination and CSI cannot identify the central site(s) affected in these diseases. Ultralow frequency transcutaneous electrical nerve stimulation (ULFTENS) is extensively used in TMD and in dental clinical practice, because of its effects on descending pain modulation pathways...
2017: Pain Research & Management: the Journal of the Canadian Pain Society
https://www.readbyqxmd.com/read/28918594/the-association-of-knee-structural-pathology-with-pain-at-the-knee-is-modified-by-pain-at-other-sites-in-those-with-knee-osteoarthritis
#3
Feng Pan, Jing Tian, Dawn Aitken, Flavia Cicuttini, Tania Winzenberg, Graeme Jones
The objective of this study was to investigate the associations of knee structural abnormalities with different patterns of pain. A total of 891 participants (average age 63 years; range 50 to 80 years) participated in this study. Presence of pain at the neck, back, hands, shoulders, hips, knees, and feet was assessed by questionnaire. Participants were categorized as having no pain at any site (no pain), pain only at the knee (KP), pain at other sites but not the knee (OP), and pain at the knee and other sites (KOP)...
September 16, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28915961/short-stem-total-hip-arthroplasty-potential-explanations-for-persistent-post-surgical-thigh-pain
#4
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/28902183/patient-characteristics-affect-the-response-to-ketamine-and-opioids-during-the-treatment-of-vaso-occlusive-episode-related-pain-in-sickle-cell-disease
#5
Raissa Nobrega, Kathy A Sheehy, Caroline Lippold, Amy L Rice, Julia C Finkel, Zenaide M N Quezado
BackgroundN-methyl-D-aspartate receptor activation has been implicated in the pathobiology of inflammatory, nociceptive and neuropathic pain, opioid tolerance, opioid-induced hyperalgesia, and central sensitization. Some of those mechanisms underlie sickle cell disease(SCD)-associated pain.MethodsWe conducted an exploratory cohort study of SCD patients who during vaso-occlusive episodes (VOEs) received subanesthetic doses of the N-methyl-D-aspartate receptor antagonist, ketamine, as an adjunct to opioids. We sought to identify predictors of changes in pain scores and of the percentage of ketamine infusions associated with meaningful changes (≥20% reduction) in pain and opioid consumption...
September 13, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28877555/cutaneous-silent-period-in-myofascial-pain-syndrome
#6
Ozden Kilinc, Savas Sencan, Tulay Ercalik, Pinar Kahraman Koytak, Hande Alibas, Osman Hakan Gunduz, Tulin Tanridag, Kayihan Uluc
INTRODUCTION: Increased response to painful stimuli without spontaneous pain suggests the role of the central hyperexcitability of pain pathways in the pathogenesis of Myofascial pain syndrome (MPS). In this study, we aimed to test the hypothesis that spinal pain pathways are affected in MPS and we used cutaneous silent period (CSP) parameters to demonstrate the hyperexcitability of spinal pain pathways in MPS. METHODS: Twenty-nine patients diagnosed with MPS and 30 healthy volunteers were included in the study...
September 6, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28874923/noninvasive-brain-stimulation-maladaptive-plasticity-and-bayesian-analysis-in-phantom-limb-pain
#7
REVIEW
Leon Morales-Quezada
Introduction: Phantom limb pain (PLP) is a common and poorly understood pathology of difficult medical control that progressively takes place after amputation occurs. Objective: This article discusses the multifactorial bases of PLP. These bases involve local changes at the stump level, spinal modifications of excitability, deafferentation, and central sensitization, leading to the development of maladaptive plasticity, and consequentially, defective processing of sensory information by associative neural networks...
August 1, 2017: Medical Acupuncture
https://www.readbyqxmd.com/read/28860846/ambroxol-for-the-treatment-of-fibromyalgia-science-or-fiction
#8
Kai-Uwe Kern, Myriam Schwickert
Fibromyalgia appears to present in subgroups with regard to biological pain induction, with primarily inflammatory, neuropathic/neurodegenerative, sympathetic, oxidative, nitrosative, or muscular factors and/or central sensitization. Recent research has also discussed glial activation or interrupted dopaminergic neurotransmission, as well as increased skin mast cells and mitochondrial dysfunction. Therapy is difficult, and the treatment options used so far mostly just have the potential to address only one of these aspects...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28859670/selective-suppression-of-the-jnk-mmp2-9-signal-pathway-by-tetramethylpyrazine-attenuates-neuropathic-pain-in-rats
#9
Lai Jiang, Cai-Long Pan, Chao-Yu Wang, Bing-Qian Liu, Yuan Han, Liang Hu, Lei Liu, Yang Yang, Jun-Wei Qu, Wen-Tao Liu
BACKGROUND: Activated astrocytes release matrix metalloproteinase-2/9 (MMP-2/9) to induce central sensitization and maintain neuropathic pain. However, the mechanisms involved in the activation of MMP-2/9 on astrocytes during pain remain poorly understood. Meanwhile, there is a lack of effective treatment to inhibit the activation of MMP-2/9 on astrocytes. In this study, we aim to investigate the effect of tetramethylpyrazine (TMP), a natural compound with analgesic effects but unknown mechanisms, on MMP-2/9 in neuropathic pain...
August 31, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28858914/neuropathic-symptoms-of-the-ocular-surface-dryness-pain-and-itch
#10
Hjalte H Andersen, Gil Yosipovitch, Anat Galor
PURPOSE OF REVIEW: This review aims to describe the recent findings on epidemiology, pathophysiology, and management of neuropathic symptoms of the ocular surface, with a focus on potential similarities between sensations of dry eye, pain and itch. RECENT FINDINGS: A narrative review of the literature was undertaken. Key references from research in dry eye, neuropathic symptoms of the ocular surface, ocular pain and itch, as well as general references on itch and pain neurobiology were included...
October 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28846511/personality-and-affect-when-the-central-nervous-system-is-sensitized-an-analysis-of-central-sensitization-syndromes-in-a-substance-use-disorder-population
#11
Lindsey C McKernan, Michael T M Finn, Erika R Carr
Functional somatic syndromes, or more recently termed central sensitivity syndromes (CSS), comprise a significant portion of the chronic pain population. Although it is evident that personality is intricately related to the pain experience, it has not been widely studied. This article examines the impact of CSS on the clinical presentation of individuals presenting to treatment for a substance use disorder (SUD), with an emphasis on personality and emotional functioning. We examined personality profiles of individuals presenting to treatment with SUD between three groups: those with a CSS (n = 30), non-CSS chronic pain (n = 79), and no pain (n = 232)...
2017: Psychodynamic Psychiatry
https://www.readbyqxmd.com/read/28842814/protein-kinase-c-%C3%AE-contributes-to-central-sensitization-in-a-rat-model-of-chronic-migraine
#12
Baixue Wu, Sha Wang, Guangcheng Qin, Jingmei Xie, Ge Tan, Jiying Zhou, Lixue Chen
Protein kinase C γ (PKCγ) is a critical regulator of central sensitization and is widely recognized to be involved in the pathogenesis of chronic migraine (CM). However, the function of PKCγ in CM remains unknown. This study investigated the role of PKCγ on pathogenesis of CM. We repeated infusions of inflammatory soup (IS) on the intact dura of conscious rats to model recurrent trigeminovascular or dural nociceptor activation assumed to occur in patients with CM. The von Frey test was then used to detect changes in pain threshold...
August 25, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28837387/crmp2-is-necessary-for-neurofibromatosis-type-1-related-pain
#13
Aubin Moutal, Song Cai, Shizhen Luo, Raphaëlle Voisin, Rajesh Khanna
Neurofibromatosis type 1 (NF1) is one of the most common genetic diseases, affecting roughly 1 in 3000 individuals. As a multisystem disorder, it affects cognitive development, as well as bone, nerve and muscle constitution. Peripheral neuropathy in NF1 constitutes a potentially severe clinical complication and is associated with increased morbidity and mortality. The discovery of effective therapies for Neurofibromatosis type 1 (NF1) pain depends on mechanistic understanding that has been limited, in part, by the relative lack of availability of animal models relevant to NF1 pain...
August 24, 2017: Channels
https://www.readbyqxmd.com/read/28818412/are-extramedian-symptoms-associated-with-peripheral-causes-in-patient-with-carpal-tunnel-syndrome-electrodiagnostic-and-ultrasonographic-study
#14
Basak Mansiz-Kaplan, Merve Akdeniz-Leblecicier, Ilker Yagci
OBJECTIVE: To evaluate the relationship between extramedian spreading of sensorial symptoms and median and ulnar nerve cross-sectional area (CSA) and to compare the ultrasonographic and electrophysiological findings in patients with carpal tunnel syndrome (CTS) with or without extramedian sensory symptoms. DESIGN: Cross-sectional study. MATERIALS AND METHODS: Patients with CTS were divided into two groups as with or without extramedian symptoms and were assessed clinically, electrophysiologically and ultrasonographically by three blind investigators...
August 10, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28815346/unilateral-cancer-associated-retinopathy-diagnosis-serology-and-treatment
#15
Dimitri Roels, Shinji Ueno, Cornelia D Talianu, Dafina Draganova, Mineo Kondo, Bart P Leroy
PURPOSE: To report a case of unilateral cancer-associated retinopathy (CAR) with clinical, serological and electroretinogram (ERG) normalization after aggressive cancer treatment combined with steroids and rituximab. METHODS: Work-up included extensive clinical and electrophysiological testing. Also, serological work-up for antiretinal antibodies and oncological screening was organized. RESULTS: A 45-year-old female presented with progressive photopsias, photophobia and relative central scotoma in the right eye since 6 weeks prior...
August 16, 2017: Documenta Ophthalmologica. Advances in Ophthalmology
https://www.readbyqxmd.com/read/28808921/volumetric-abnormalities-of-thalamic-subnuclei-in-medication-overuse-headache
#16
Zhiye Chen, Zhihua Jia, Xiaoyan Chen, Mengqi Liu, Shuangfeng Liu, Lin Ma, Shengyuan Yu
BACKGROUND: The thalamus exerts a pivotal role in pain processing and cortical excitability control and a previous voxel-based morphometry study confirmed increased volume in bilateral thalamus in medication-overuse headache (MOH). The aim of this study is to investigate altered thalamic subnuclei volume in MOH compared with normal controls, and to evaluate the relationship of each thalamic subnuclei volume with the clinical variables. METHODS: High resolution three-dimensional T1-weighted fast spoiled gradient recalled echo MR images were obtained from 27 patients with MOH and 27 normal controls (NC)...
August 14, 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28796805/pain-experiences-of-patients-with-musculoskeletal-pain-central-sensitization-a-comparative-group-delphi-study
#17
Axel Georg Meender Schäfer, Leonie Johanna Joos, Katharina Roggemann, Kerstin Waldvogel-Röcker, Michael Pfingsten, Frank Petzke
OBJECTIVES: Central sensitization (CS) is regarded as an important contributing factor for chronification of musculoskeletal pain (MSP). It is crucial to identify CS, as targeted multimodal treatment may be indicated. The primary objective of this study was therefore to explore pain experience of individuals with MSP+CS in order to gain a better understanding of symptoms in relation to CS from a patient perspective. The secondary objective was to investigate whether pain experiences of patients with MSP+CS differ from those of individuals with neuropathic pain (NP)...
2017: PloS One
https://www.readbyqxmd.com/read/28777895/cross-cultural-adaptation-and-psychometric-validation-of-the-serbian-version-of-the-central-sensitization-inventory-csi
#18
Aleksandar Knezevic, Randy Neblett, Milica Jeremic-Knezevic, Snezana Tomasevic-Todorovic, Ksenija Boskovic, Petar Colovic, Antonio Cuesta-Vargas
OBJECTIVES: It has been increasingly recognized that many chronic pain conditions are associated with central sensitization (CS). The Central Sensitization Inventory (CSI) is a potentially useful tool for screening patients whose presenting symptoms are suspected of being related to CS, so that additional diagnostic evaluation can be performed, and appropriate treatment can be initiated. The original English version is currently not available in Serbian. METHODS: The CSI was translated into Serbian and then psychometrically evaluated in a sample of 363 chronic pain subjects...
August 4, 2017: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/28768437/clinical-descriptors-for-the-recognition-of-central-sensitization-pain-in-patients-with-knee-osteoarthritis
#19
Enrique Lluch, Jo Nijs, Carol A Courtney, Trudy Rebbeck, Vikki Wylde, Isabel Baert, Timothy H Wideman, Nick Howells, Søren T Skou
BACKGROUND: Despite growing awareness of the contribution of central pain mechanisms to knee osteoarthritis pain in a subgroup of patients, routine evaluation of central sensitization is yet to be incorporated into clinical practice. AIM: The objective of this perspective is to design a set of clinical descriptors for the recognition of central sensitization in patients with knee osteoarthritis that can be implemented in clinical practice. METHODS: A narrative review of original research papers was conducted by nine clinicians and researchers from seven different countries to reach agreement on clinically relevant descriptors...
August 2, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28767017/association-between-borderline-personality-features-and-temporal-summation-of-second-pain-a-cross-sectional-study
#20
Dokyoung S You, Mary W Meagher
Individuals with greater borderline personality features may be vulnerable to chronic pain. Because pain is an unpleasant sensory and emotional experience, affect dysregulation as the core personality feature may be linked to pain hypersensitivity. Studies have found that greater borderline features are associated with increased intensity in clinical and experimental pain, and that depression mediates this increase. The current study further examined the association between borderline features and heat pain sensitivity, the contribution of affect dysregulation and the other borderline personality factors (identity problems, negative relationships, self-harming/impulsivity) to the association, and depression as a mediator...
July 2017: Behavioral Medicine
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