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Chronic pain AND brain changes

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https://www.readbyqxmd.com/read/29156922/changes-in-laser-evoked-potentials-during-hypnotic-analgesia-for-chronic-pain-a-pilot-study
#1
Giovanna Squintani, Maria P Brugnoli, Emanuela Pasin, Alessia Segatti, Elisa Concon, Enrico Polati, Bruno Bonetti, Angela Matinella
BACKGROUND: Hypnotic analgesia is one of the most effective nonpharmacological methods for pain control. Hypnosis and distraction of attention from pain might share similar mechanisms by which brain responses to painful stimulation could be similarly reduced in both states. There is ample evidence for the efficacy of clinical hypnosis as a psychological intervention in the treatment of acute or chronic pain. Results are conflicting, however, with some studies showing an increase, others a reduction, and others still no change in the amplitude of event-related brain potentials during hypnosis as compared to control conditions...
November 10, 2017: Annals of Palliative Medicine
https://www.readbyqxmd.com/read/29127316/exercise-induced-changes-in-cerebrospinal-fluid-mirnas-in-gulf-war-illness-chronic-fatigue-syndrome-and-sedentary-control-subjects
#2
James N Baraniuk, Narayan Shivapurkar
Gulf War Illness (GWI) and Chronic Fatigue Syndrome (CFS) have similar profiles of pain, fatigue, cognitive dysfunction and exertional exhaustion. Post-exertional malaise suggests exercise alters central nervous system functions. Lumbar punctures were performed in GWI, CFS and control subjects after (i) overnight rest (nonexercise) or (ii) submaximal bicycle exercise. Exercise induced postural tachycardia in one third of GWI subjects (Stress Test Activated Reversible Tachycardia, START). The remainder were Stress Test Originated Phantom Perception (STOPP) subjects...
November 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29117023/legal-evidence-of-subjective-states-a-brain-based-model-of-chronic-pain-increases-accuracy-and-fairness-in-law
#3
Amanda C Pustilnik
Advances in structural and functional neuroimaging offer new ways to conceptualize chronic pain disorders and to prevent, diagnose, and treat chronic pain. Advances in pain science, though, do not entail changes in the concepts of chronic pain in law and culture. Authoritative legal and cultural conceptions of chronic pain continue to promote abstruse theories, characterizing these disorders as arising out of everything from a person's unmet need for love to resistance to "patriarchy." These constructs have consequences, impeding treatment and affecting whether individuals with chronic pain can obtain legal redress...
November 2017: Harvard Review of Psychiatry
https://www.readbyqxmd.com/read/29054488/the-histone-demethylase-jmjd2a-regulates-the-expression-of-bdnf-and-mediates-neuropathic-pain-in-mice
#4
Junfei Zhou, Fang Wang, Chang Xu, Zipeng Zhou, Wei Zhang
JMJD2A is a JmjC histone demethylase that catalyzes the demethylation of di- and trimethylated Lys9 and Lys36 in histone H3 (H3K9me2/3 and H3K36me2/3). The role of spinal JMJD2A-dependent histone demethylation in nociception hypersensitivity development remains elusive. Here we reported that the JMJD2A responded to neuropathic pain and participated in the maintenance of neuropathic pain. The mRNA and protein levels of Jmjd2a were significantly increased in the neurons of mouse undergoing neuropathic pain induced by sciatic nerve chronic constrictive injury (CCI) or unilateral spared nerve injury (SNI)...
October 18, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/29042341/pain-self-management-for-veterans-development-and-pilot-test-of-a-stage-based-mobile-optimized-intervention
#5
Sara S Johnson, Deborah A Levesque, Lynne E Broderick, Dustin G Bailey, Robert D Kerns
BACKGROUND: Chronic pain is a significant public health burden affecting more Americans than cardiovascular disease, diabetes, and cancer combined. Veterans are disproportionately affected by chronic pain. Among previously deployed soldiers and veterans, the prevalence of chronic pain is estimated between 44% and 60%. OBJECTIVE: The objective of this research was to develop and pilot-test Health eRide: Your Journey to Managing Pain, a mobile pain self-management program for chronic musculoskeletal pain for veterans...
October 17, 2017: JMIR Medical Informatics
https://www.readbyqxmd.com/read/29033604/chronic-pain-and-adult-hippocampal-neurogenesis-translational-implications-from-preclinical-studies
#6
Mariagrazia Grilli
Adult hippocampal neurogenesis (ahNG) occurs in the human brain. Adult generated neurons have been proposed to functionally contribute to relevant hippocampal functions such as learning and memory, mood regulation, and stress response. Learning, environmental enrichment, and physical exercise exert positive effects on ahNG. In parallel, these proneurogenic stimuli have been shown to ameliorate cognitive performance and/or depressive-like behavior in animal models. Conversely, aging, social isolation, and chronic stress exert negative effects on ahNG...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/29025157/chronic-pain-after-traumatic-brain-injury-pathophysiology-and-pain-mechanisms
#7
Karen-Amanda Irvine, J David Clark
Background: Traumatic brain injury refers to a broad range of neurological, cognitive, and emotional factors that result from the application of an external force to the head. Individuals recovering from traumatic brain injury will frequently experience acute and chronic pain. Objective: The objective of this paper is to discuss the pathophysiological changes resulting from traumatic brain injury and how these may be involved in the development and persistence of pain after injury...
August 29, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28979158/the-central-sensitization-inventory-validated-and-adapted-for-a-brazilian-population-psychometric-properties-and-its-relationship-with-brain-derived-neurotrophic-factor
#8
Wolnei Caumo, Luciana C Antunes, Jéssica Lorenzzi Elkfury, Evelyn G Herbstrith, Raquel Busanello Sipmann, Andressa Souza, Iraci Ls Torres, Vinicius Souza Dos Santos, Randy Neblett
OBJECTIVES: The primary aim was to assess the psychometric properties (including internal consistency, construct validity, reproducibility, and factor structure) of the Central Sensitization Inventory (CSI), adapted and validated for a Brazilian population (CSI-BP). Additionally, we evaluated the relationship between the CSI-BP and the serum brain-derived neurotrophic factor (BDNF) and determined if the symptoms elicited by the CSI-BP discriminate between subjects who do/do not respond to the conditioned pain modulation (CPM) task, as assessed by change in numeric pain scale (0-10) score...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28971229/role-of-the-guanine-nucleotide-binding-protein-g%C3%AE-o-in-the-development-of-morphine-tolerance-and-dependence
#9
Jennifer T Lamberts, Lisa D Rosenthal, Emily M Jutkiewicz, John R Traynor
RATIONALE: The use of morphine and other opioids for chronic pain is limited by the development of analgesic tolerance and physical dependence. Morphine produces its effects by activating the μ opioid receptor, which couples to Gαi/o-containing heterotrimeric G proteins. Evidence suggests that the antinociceptive effects of morphine are mediated by Gαo. However, the role of Gαo in the development of morphine tolerance and dependence is unknown. OBJECTIVE: The objective of the study is to evaluate the contribution of Gαo to the development of morphine tolerance and dependence in mice...
October 3, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28967357/in-the-spine-or-in-the-brain-recent-advances-in-pain-neuroscience-applied-in-the-intervention-for-low-back-pain
#10
REVIEW
Jo Nijs, Jacqui Clark, Anneleen Malfliet, Kelly Ickmans, Lennard Voogt, Sanneke Don, Hester den Bandt, Dorien Goubert, Jeroen Kregel, Iris Coppieters, Wim Dankaerts
Conservative, surgical and pharmacological strategies for chronic low back pain (CLBP) management offer at best modest effect sizes in reducing pain and related disability, indicating a need for improvement. Such improvement may be derived from applying contemporary pain neuroscience to the management of CLBP. Current interventions for people with CLBP are often based entirely on a "biomedical" or "psychological" model without consideration of information concerning underlying pain mechanisms and contemporary pain neuroscience...
September 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28962922/treadmill-exercise-alleviated-prenatal-buprenorphine-exposure-induced-depression-in-rats
#11
Chih-Cheng Wu, Chih-Jen Hung, Shih-Yi Lin, Ya-Yu Wang, Cheng-Yi Chang, Wen-Ying Chen, Su-Lan Liao, Shue-Ling Raung, Ching-Ping Yang, Chun-Jung Chen
Mounting evidence suggests that physical exercise shows health benefits in a range of diseases, including psychiatric disorders. Perinatal opioid exposure produces neurobehavioral abnormality, which includes depression symptoms, in patients and their offspring following chronic use of buprenorphine, a mixed agonist/antagonist with a high affinity to opioid receptors, for pain control. Previously, we demonstrated that prenatal buprenorphine exposure in pregnant Sprague-Dawley rats starting from gestation day 7 and lasting for 14 days caused the development of depression-like phenotypes in pups at postnatal day 21...
September 27, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28947182/pain-aging-and-dementia-towards-a-biopsychosocial-model
#12
REVIEW
Lucia Gagliese, Lynn R Gauthier, Nadine Narain, Tamlyn Freedman
Dementia is a progressive disease associated with irreversible impairment and loss of cognitive abilities. About half of older people with dementia experience pain. In this paper, we propose that pain in older people with dementia can be conceptualized as the final result of the interaction of three heterogeneous phenomena, pain, aging, and dementia, which are created and influenced by the interactions of predisposing, lifelong, and current biopsychosocial factors. We review pain assessment in people with dementia using both self-report and observational/behavioral measures...
September 22, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28931334/repeated-exposure-to-experimental-pain-differentiates-combat-tbi-with-and-without-ptsd
#13
Irina A Strigo, Andrea D Spadoni, Sabra S Inslicht, Alan N Simmons
Mild traumatic brain injury(mTBI) and posttraumatic stress disorder(PTSD) are highly comorbid conditions that often co-occur with chronic pain. We have shown that women with PTSD following intimate partner violence show attenuated brain response to repeated experimental pain that was related to symptoms of avoidance. The aim of this study was to extend our prior findings to males with combat trauma and to examine brain response to experimental pain in men with and without PTSD who sustained mTBI during combat...
September 20, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28928638/affective-circuitry-alterations-in-patients-with-trigeminal-neuralgia
#14
Dave J Hayes, David Q Chen, Jidan Zhong, Ariel Lin, Brendan Behan, Matthew Walker, Mojgan Hodaie
Trigeminal neuralgia (TN) is a severe chronic neuropathic facial pain disorder. Affect-related behavioral and structural brain changes have been noted across chronic pain disorders, but have not been well-studied in TN. We examined the potential impact of TN (37 patients: 23 with right-sided TN, 14 with left-sided TN), compared to age- and sex-matched healthy controls, on three major white matter tracts responsible for carrying affect-related signals-i.e., cingulum, fornix, and medial forebrain bundle. Diffusion magnetic resonance imaging (dMRI), deterministic multi-tensor tractography for tract modeling, and a model-driven region-of-interest approach was used...
2017: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/28893330/changes-in-resting-state-brain-networks-after-cognitive-behavioral-therapy-for-chronic-pain
#15
A Yoshino, Y Okamoto, G Okada, M Takamura, N Ichikawa, C Shibasaki, S Yokoyama, M Doi, R Jinnin, H Yamashita, M Horikoshi, S Yamawaki
BACKGROUND: Cognitive-behavioral therapy (CBT) is thought to be useful for chronic pain, with the pathology of the latter being closely associated with cognitive-emotional components. However, there are few resting-state functional magnetic resonance imaging (R-fMRI) studies. We used the independent component analysis method to examine neural changes after CBT and to assess whether brain regions predict treatment response. METHODS: We performed R-fMRI on a group of 29 chronic pain (somatoform pain disorder) patients and 30 age-matched healthy controls (T1)...
September 12, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28890049/psychological-processes-in-chronic-pain-influences-of-reward-and-fear-learning-as-key-mechanisms-behavioral-evidence-neural-circuits-and-maladaptive-changes
#16
Frauke Nees, Susanne Becker
In the understanding of chronic pain, hypotheses derived from psychological theories, together with insights from physiological assessments and brain imaging, highlight the importance of mechanistically driven approaches. Physical system changes, for example following injury, can result in alterations of psychological processes and are accompanied by changes in corticolimbic circuits, which have been shown to be essential in emotional learning and memory, as well as reward processing and related behavior. In the present review, we thus highlight the importance of motivational, reward/pain relief, and fear learning processes in the context of chronic pain and discuss the potential of a mechanistic understanding of chronic pain within a clinical perspective, for example for the development of therapeutic strategies...
September 7, 2017: Neuroscience
https://www.readbyqxmd.com/read/28888088/possible-modulation-of-ppar-%C3%AE-cascade-against-depression-caused-by-neuropathic-pain-in-rats
#17
Shanky Garg, Vishwajit Ravindra Deshmukh, Pranav Prasoon
BACKGROUND: Sciatic nerve ligation causes neuropathic pain with chronic constriction injury (CCI). However, there is no published report on the effect of pioglitazone as an antidepressant in the treatment of depression induced by neuropathic pain with CCI in rats. The aim of this study was to evaluate the effect of pioglitazone as an antidepressant by targeting oxidative stress by the peripheral neuropathic pain model using the CCI of the sciatic nerve. METHODS: Behavioral studies were carried out to measure thermal hyperalgesia and cold allodynia as markers of neuropathic pain and force swim test for depression...
November 27, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28886046/effects-of-water-avoidance-stress-on-peripheral-and-central-responses-during-bladder-filling-in-the-rat-a-multidisciplinary-approach-to-the-study-of-urologic-chronic-pelvic-pain-syndrome-mapp-research-network-study
#18
Zhuo Wang, Harriet H Chang, Yunliang Gao, Rong Zhang, Yumei Guo, Daniel P Holschneider, Larissa V Rodriguez
Stress plays a role in the exacerbation and possibly the development of functional lower urinary tract disorders. Chronic water avoidance stress (WAS) in rodents is a model with high construct and face validity to bladder hypersensitive syndromes, such as interstitial cystitis/bladder pain syndrome (IC/BPS), characterized by urinary frequency and bladder hyperalgesia and heightened stress responsiveness. Given the overlap of the brain circuits involved in stress, anxiety, and micturition, we evaluated the effects chronic stress has on bladder function, as well as its effects on regional brain activation during bladder filling...
2017: PloS One
https://www.readbyqxmd.com/read/28860106/web-based-mindfulness-interventions-for-people-with-physical-health-conditions-systematic-review
#19
Kirsti I Toivonen, Kristin Zernicke, Linda E Carlson
BACKGROUND: Mindfulness-based interventions (MBIs) are becoming increasingly popular for helping people with physical health conditions. Expanding from traditional face-to-face program delivery, there is growing interest in Web-based application of MBIs, though Web-based MBIs for people with physical health conditions specifically have not been thoroughly reviewed to date. OBJECTIVE: The objective of this paper was to review Web-based MBIs for people with physical health conditions and to examine all outcomes reported (eg, efficacy or effectiveness for physical changes or psychological changes; feasibility)...
August 31, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28859146/negative-correlation-of-cortical-thickness-with-the-severity-and-duration-of-abdominal-pain-in-asian-women-with-irritable-bowel-syndrome
#20
Chian Sem Chua, Chyi-Huey Bai, Chen-Yu Shiao, Chien-Yeh Hsu, Chiao-Wen Cheng, Kuo-Ching Yang, Hung-Wen Chiu, Jung-Lung Hsu
BACKGROUND & AIMS: Irritable bowel syndrome (IBS) manifests as chronic abdominal pain. One pathophysiological theory states that the brain-gut axis is responsible for pain control in the intestine. Although several studies have discussed the structural changes in the brain of IBS patients, most of these studies have been conducted in Western populations. Different cultures and sexes experience different pain sensations and have different pain responses. Accordingly, we aimed to identify the specific changes in the cortical thickness of Asian women with IBS and to compare these data to those of non-Asian women with IBS...
2017: PloS One
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