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Pain AND brain changes

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https://www.readbyqxmd.com/read/28103638/music-interventions-for-acquired-brain-injury
#1
REVIEW
Wendy L Magee, Imogen Clark, Jeanette Tamplin, Joke Bradt
BACKGROUND: Acquired brain injury (ABI) can result in impairments in motor function, language, cognition, and sensory processing, and in emotional disturbances, which can severely reduce a survivor's quality of life. Music interventions have been used in rehabilitation to stimulate brain functions involved in movement, cognition, speech, emotions, and sensory perceptions. An update of the systematic review published in 2010 was needed to gauge the efficacy of music interventions in rehabilitation for people with ABI...
January 20, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28087191/alterations-of-brain-activity-in-fibromyalgia-patients
#2
REVIEW
Passakorn Sawaddiruk, Sahattaya Paiboonworachat, Nipon Chattipakorn, Siriporn C Chattipakorn
Fibromyalgia is a chronic pain syndrome, characterized by widespread musculoskeletal pain with diffuse tenderness at multiple tender points. Despite intense investigations, the pathophysiology of fibromyalgia remains elusive. Evidence shows that it could be due to changes in either the peripheral or central nervous system (CNS). For the CNS changes, alterations in the high brain area of fibromyalgia patients have been investigated but the definite mechanisms are still unclear. Magnetic Resonance Imaging (MRI) and Functional Magnetic Resonance (fMRI) have been used to gather evidence regarding the changes of brain morphologies and activities in fibromyalgia patients...
January 10, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28079752/changes-in-dorsal-root-ganglion-gene-expression-in-response-to-spinal-cord-stimulation
#3
Dana M Tilley, David L Cedeño, Courtney A Kelley, Margaret DeMaegd, Ramsin Benyamin, Ricardo Vallejo
BACKGROUND AND OBJECTIVES: Spinal cord stimulation (SCS) has been shown to influence pain-related genes in the spinal cord directly under the stimulating electrodes. There is limited information regarding changes occurring at the dorsal root ganglion (DRG). This study evaluates gene expression in the DRG in response to SCS therapy. METHODS: Rats were randomized into experimental or control groups (n = 6 per group). Experimental animals underwent spared-nerve injury, implantation of lead, and continuous SCS (72 hours)...
January 11, 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28077839/atypical-trigeminal-neuralgia-a-rare-neurological-manifestation-of-systemic-lupus-erythematosus
#4
Viki Kumar, Jaspinder Kaur, Pallavi Pothuri, Sahiba Bandagi
BACKGROUND Systemic lupus erythematosus (SLE) is a multisystem autoimmune disorder of unknown etiology which can present at any age with symptoms of mucocutaneous, musculoskeletal, renal, central nervous system, and nonspecific clinical pictures making the disease a "master of mimicry". CASE REPORT A 53-year-old female, who was recently diagnosed with SLE, presented with right-sided sharp and electric shock-like facial pain starting at the side of her right nostril and traveling down the naso-labial fold and then back to the angle of the jaw, mostly in the region of V2-V3 distribution with no radiation beyond trigeminal distribution...
January 12, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28072961/-a-case-report-of-childhood-farber-s-disease-and-literature-review
#5
X H Bao, J M Tian, T Y Ji, X Z Chang
Objective: To explore the clinical features, diagnosis, treatment and the prognosis of Farber disease by case report and literature review. Method: The clinical information of a case with farber's disease diagnosed in October 2015 at Peking University First Hospital was collected and analyzed, including clinical manifestation, electrophysiology, magnetic resonance imaging, pathology, treatments and prognosis.ASAH1 gene mutational analysis was conducted in the patient and her parents.By using "Farber's disease, ASAH1" as keywords, literature was searched from Pubmed, CHKD and HGMD database from January 1951 to January 2016...
January 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28069543/brain-oscillations-differentially-encode-noxious-stimulus-intensity-and-pain-intensity
#6
Moritz M Nickel, Elisabeth S May, Laura Tiemann, Paul Schmidt, Martina Postorino, Son Ta Dinh, Joachim Gross, Markus Ploner
Noxious stimuli induce physiological processes which commonly translate into pain. However, under certain conditions, pain intensity can substantially dissociate from stimulus intensity, e.g. during longer-lasting pain in chronic pain syndromes. How stimulus intensity and pain intensity are differentially represented in the human brain is, however, not yet fully understood. We therefore used electroencephalography (EEG) to investigate the cerebral representation of noxious stimulus intensity and pain intensity during 10min of painful heat stimulation in 39 healthy human participants...
January 7, 2017: NeuroImage
https://www.readbyqxmd.com/read/28068994/spatiotemporal-changes-of-optical-signals-in-the-somatosensory-cortex-of-neuropathic-rats-after-electroacupuncture-stimulation
#7
Myeounghoon Cha, Younbyoung Chae, Sun Joon Bai, Bae Hwan Lee
BACKGROUND: Peripheral nerve injury causes physiological changes in primary afferent neurons. Neuropathic pain associated with peripheral nerve injuries may reflect changes in the excitability of the nervous system, including the spinothalamic tract. Current alternative medical research indicates that acupuncture stimulation has analgesic effects in various pain symptoms. However, activation changes in the somatosensory cortex of the brain by acupuncture stimulation remain poorly understood...
January 10, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28066825/a-blinded-randomised-placebo-controlled-trial-investigating-the-efficacy-of-morphine-analgesia-for-procedural-pain-in-infants-trial-protocol
#8
Rebeccah Slater, Caroline Hartley, Fiona Moultrie, Eleri Adams, Ed Juszczak, Richard Rogers, Jane E Norman, Chetan Patel, Kayleigh Stanbury, Amy Hoskin, Gabrielle Green
Infant pain has both immediate and long-term negative consequences, yet in clinical practice it is often undertreated. To date, few pain-relieving drugs have been tested in infants. Morphine is a potent analgesic that provides effective pain relief in adults, but there is inconclusive evidence for its effectiveness in infants. The purpose of this study is to establish whether oral morphine provides effective analgesia for procedural pain in infants. A blinded, placebo-controlled, parallel-group randomized, phase II, clinical trial will be undertaken to determine whether morphine sulphate administered orally prior to clinically-required retinopathy of prematurity (ROP) screening and heel lancing provides effective analgesia...
November 15, 2016: Wellcome Open Res
https://www.readbyqxmd.com/read/28064085/cortisol-awakening-response-is-blunted-and-pain-perception-is-increased-during-menses-in-cyclic-women
#9
Tuba Ozgocer, Cihat Ucar, Sedat Yildiz
BACKGROUND AND AIMS: The incidence of menstrual symptoms is reported to be as high as 90% in cyclic women. These symptoms, including anxiety and pain, might be associated with cortisol, as its receptors are widely distributed in the brain areas associated with behavior. Therefore, the current study aimed to assess the cortisol awakening response (CAR) throughout the menstrual cycle and correlate it with pain perception and trait anxiety. MATERIALS AND METHODS: CAR was assessed by measuring salivary cortisol at 0, 15, 30, and 60min following awakening in the same women (n=59, age 22...
December 21, 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28056123/the-interface-of-mechanics-and-nociception-in-joint-pathophysiology-insights-from-the-facet-and-temporomandibular-joints
#10
Megan M Sperry, Meagan E Ita, Sonia Kartha, Sijia Zhang, Ya-Hsin Yu, Beth Winkelstein
Chronic joint pain is a widespread problem that frequently occurs with aging and trauma. Pain occurs most often in synovial joints, the body's load bearing joints. The mechanical and molecular mechanisms contributing to synovial joint pain are reviewed using two examples, the cervical spinal facet joints and the temporomandibular joint (TMJ). Although much work has focused on the macroscale mechanics of joints in health and disease, the combined influence of tissue mechanics, molecular processes, and nociception in joint pain has only recently become a focus...
February 1, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28035535/the-role-of-the-gastrointestinal-microbiota-in-visceral-pain
#11
Kieran Rea, Siobhain M O'Mahony, Timothy G Dinan, John F Cryan
A growing body of preclinical and clinical evidence supports a relationship between the complexity and diversity of the microorganisms that inhabit our gut (human gastrointestinal microbiota) and health status. Under normal homeostatic conditions this microbial population helps maintain intestinal peristalsis, mucosal integrity, pH balance, immune priming and protection against invading pathogens. Furthermore, these microbes can influence centrally regulated emotional behaviour through mechanisms including microbially derived bioactive molecules (amino acid metabolites, short-chain fatty acids, neuropeptides and neurotransmitters), mucosal immune and enteroendocrine cell activation, as well as vagal nerve stimulation...
December 30, 2016: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28030474/therapeutic-benefits-of-the-methyl-donor-s-adenosylmethionine-sam-on-nerve-injury-induced-mechanical-hypersensitivity-and-cognitive-impairment-in-mice
#12
Stéphanie Grégoire, Magali Millecamps, Lina Naso, Sonia Do Carmo, A Claudio Cuello, Moshe Szyf, Laura S Stone
Despite considerable advances in understanding mechanisms involved in chronic pain, effective treatment remains elusive. Co-morbid conditions including anxiety, depression and cognitive impairment further impact quality of life. Chronic pain is associated with reversible changes in brain anatomy and function and with long-term changes in gene expression. Epigenetic mechanisms, including DNA methylation, contribute to wide-spread and long-lasting reprogramming of gene expression. We previously reported decreases in global DNA methylation in the mouse frontal cortex six months following induction of neuropathic pain using the Spared Nerve Injury (SNI) model...
December 22, 2016: Pain
https://www.readbyqxmd.com/read/28030473/intense-pain-influences-the-cortical-processing-of-visual-stimuli-projected-onto-the-sensitized-skin
#13
D M Torta, E N Van Den Broeke, L Filbrich, B Jacob, J Lambert, A Mouraux
Sensitization is a form of implicit learning produced by the exposure to a harmful stimulus. In humans and other mammals, sensitization following skin injury increases the responsiveness of peripheral nociceptors, and enhances the synaptic transmission of nociceptive input in the central nervous system (CNS). Here, we show that sensitization-related changes in the CNS are not restricted to nociceptive pathways and, instead, also affect other sensory modalities, especially if that modality conveys information relevant for the sensitized body part...
December 22, 2016: Pain
https://www.readbyqxmd.com/read/28028808/structural-gray-matter-alterations-in-chronic-migraine-implications-for-a-progressive-disease
#14
Lars Neeb, Kaili Bastian, Kersten Villringer, Heike Israel, Uwe Reuter, Jochen B Fiebach
OBJECTIVE: To identify possible gray matter alterations in patients with chronic migraine using voxel-based morphometry (VBM). BACKGROUND: VBM studies demonstrate structural alterations of gray matter (GM) in episodic migraine (EM) patients. Some of these alterations correlate with disease duration and headache frequency. We assessed GM alterations in chronic migraine (CM) and EM to evaluate the concept of migraine as a progressive disorder of the brain. METHODS: Individually age and sex-matched subjects with CM or EM (both without aura) and healthy controls (n = 21 per group) underwent magnetic resonance imaging-based VBM...
December 28, 2016: Headache
https://www.readbyqxmd.com/read/28028803/cortical-alterations-in-medication-overuse-headache
#15
Franz Riederer, Marie Schaer, Andreas R Gantenbein, Roger Luechinger, Lars Michels, Marihan Kaya, Spyridon Kollias, Peter S Sándor
OBJECTIVE: Using surface-based morphometry we aimed to provide a detailed examination of cortical alterations in medication-overuse headache (MOH), by disentangling between altered cortical thickness and gyrification (folding). BACKGROUND: In MOH, pain modulation is probably dysfunctional at the cortical and subcortical level, resulting in a disequilibrium between pain inhibition and facilitation. Both increased and decreased cortical volumes have been reported in individuals with MOH...
December 28, 2016: Headache
https://www.readbyqxmd.com/read/28011263/prenatal-alcohol-exposure-potentiates-chronic-neuropathic-pain-spinal-glial-and-immune-cell-activation-and-alters-sciatic-nerve-and-drg-cytokine-levels
#16
Shahani Noor, Joshua J Sanchez, Arden G Vanderwall, Melody S Sun, Jessie R Maxwell, Suzy Davies, Lauren L Jantzie, Timothy R Petersen, Daniel D Savage, Erin D Milligan
A growing body of evidence indicates that prenatal alcohol exposure (PAE) may predispose individuals to secondary medical disabilities later in life. Animal models of PAE reveal neuroimmune sequelae such as elevated brain astrocyte and microglial activation with corresponding region-specific changes in immune signaling molecules such as cytokines and chemokines. The aim of this study was to evaluate the effects of moderate PAE on the development and maintenance of allodynia induced by chronic constriction injury (CCI) of the sciatic nerve in adult male rat offspring...
December 20, 2016: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28003962/cortical-arousal-in-children-and-adolescents-with-functional-neurological-symptoms-during-the-auditory-oddball-task
#17
Kasia Kozlowska, Dmitriy Melkonian, Chris J Spooner, Stephen Scher, Russell Meares
OBJECTIVE: Stress, pain, injury, and psychological trauma all induce arousal-mediated changes in brain network organization. The associated, high level of arousal may disrupt motor-sensory processing and result in aberrant patterns of motor function, including functional neurological symptoms. We used the auditory oddball paradigm to assess cortical arousal in children and adolescents with functional neurological symptom disorder. METHOD: Electroencephalogram (EEG) data was collected in fifty-seven children and adolescents (41 girls; 16 boys, aged 8...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28003158/central-sensitization-related-changes-of-effective-and-functional-connectivity-in-the-rat-inflammatory-trigeminal-pain-model
#18
Tamás Spisák, Zsófia Pozsgay, Csaba Aranyi, Szabolcs Dávid, Pál Kocsis, Gabriella Nyitrai, Dávid Gajári, Miklós Emri, András Czurkó, Zsigmond Tamás Kincses
Central sensitization is a key mechanism in the pathology of several neuropathic pain disorders. We aimed to investigate the underlying brain connectivity changes in a rat model of chronic pain. Non-noxious whisker stimulation was used to evoke blood-oxygen-level-dependent (BOLD) responses in a block-design functional Magnetic Resonance Imaging (fMRI) experiment on 9.4T. Measurements were repeated two days and one week after injecting complete Freund's adjuvant into the rats' whisker pad. We found that acute pain reduced activation in the barrel cortex, most probably due to a plateau effect...
December 18, 2016: Neuroscience
https://www.readbyqxmd.com/read/28002166/the-analgesic-effects-of-5r-6r-6-3-propylthio-1-2-5-thiadiazol-4-yl-1-azabicyclo-3-2-1-octane-on-a-mouse-model-of-neuropathic-pain
#19
Yong-Jie Wang, Zhen-Xing Zuo, Mei Zhang, Zhi-Hui Feng, Min Yan, Xiang-Yao Li
BACKGROUND: Both pharmacologic and genetic approaches have been used to study the involvement of the muscarinic acetylcholine system in the regulation of chronic pain. Previous studies suggest that the M2 and M4 subtypes of muscarinic acetylcholine receptors (mAChRs) are important targets for the development of chronic pain. (5R,6R)6-(3-Propylthio-1,2,5-thiadiazol-4-yl)-1-azabicyclo[3.2.1] octane (PTAC) has agonist effects on muscarinic M2 and M4 receptors and antagonist effects on muscarinic M1, M3, and M5 receptors...
December 19, 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27999530/disturbed-interhemispheric-functional-connectivity-rather-than-structural-connectivity-in-irritable-bowel-syndrome
#20
Rongfeng Qi, Chang Liu, Yifei Weng, Qiang Xu, Liya Chen, Fangyu Wang, Long J Zhang, Guang M Lu
Neuroimaging studies have demonstrated that irritable bowel syndrome (IBS)-a relapsing functional bowel disorder-presents with disrupted brain connections. However, little is known about the alterations of interhemispheric functional connectivity and underlying structural connectivity in IBS. This study combined resting-state functional magnetic resonance imaging (rs-fMRI) and diffusion tensor imaging (DTI) to investigate changes in interhemispheric coordination in IBS patients. Resting-state functional and structural magnetic resonance images were acquired from 65 IBS patients and 67 healthy controls (HCs; matched for age, sex and educational level)...
2016: Frontiers in Molecular Neuroscience
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