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Chronic pain AND neurobiology

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https://www.readbyqxmd.com/read/29302219/individual-differences-in-the-neuropsychopathology-of-addiction
#1
Olivier George, George F Koob
Drug addiction or substance-use disorder is a chronically relapsing disorder that progresses through binge/intoxication, withdrawal/negative affect and preoccupation/anticipation stages. These stages represent diverse neurobiological mechanisms that are differentially involved in the transition from recreational to compulsive drug use and from positive to negative reinforcement. The progression from recreational to compulsive substance use is associated with downregulation of the brain reward systems and upregulation of the brain stress systems...
September 2017: Dialogues in Clinical Neuroscience
https://www.readbyqxmd.com/read/29282585/as-a-painkiller-a-review-of-pre-and-postnatal-non-steroidal-anti-inflammatory-drug-exposure-effects-on-the-nervous-systems
#2
REVIEW
Kıymet Kubra Yurt, Suleyman Kaplan
Diclofenac sodium (DS) is commonly used for the treatment of acute and chronic pain, even for extended periods of time. Over the years, DS has been associated with toxicity in nervous tissue, in addition to its anti-inflammatory properties. Basic neurobiological research has enhanced our understanding of the biological and pathological outcomes of toxicity. Several studies have suggested DS-induced cytotoxicity in the nervous system. Prenatal toxicities of DS are thought to be capable of leading to postnatal defects...
December 27, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/29244629/evolution-shame-and-psychotherapy
#3
Richard Brockman
Medea, the title character in Euripides' play, murdered her two sons in response to her husband Jason's abandonment. If her behavior can be understood, it is best understood in the context of shame. In an evolutionary context, shame is the affective response to the loss of one's place in the group. This response is related to the neurobiology of pain-not the acute pain experienced through the post-central gyrus, but the chronic, lingering pain that is experienced through the insular and cingulate cortices where homeostasis is regulated "from above...
2017: Psychodynamic Psychiatry
https://www.readbyqxmd.com/read/29227505/neurobiology-of-sexual-assault-and-osteopathic-considerations-for-trauma-informed-care-and-practice
#4
Kristen M Cuevas, Jane Balbo, Krista Duval, Elizabeth A Beverly
Sexual assault is a traumatic event with potentially devastating lifelong effects on physical and emotional health. Sexual assault is associated with gastrointestinal, neurologic, and reproductive symptoms, as well as obesity, diabetes, and chronic pain. With 1 in 3 women and 1 in 6 men experiencing some form of unwanted sexual violence in their lifetime, sexual assault is a significant public health problem that necessitates attention in the medical community. This review discusses relevant literature on the neurobiologic changes that occur as a consequence of sexual assault, such as how the brain responds during a traumatic experience and the impact of trauma on memory...
December 11, 2017: Journal of the American Osteopathic Association
https://www.readbyqxmd.com/read/29222302/pain-measurement-tools-in-sickle-cell-disease-where-are-we-now
#5
REVIEW
Deepika S Darbari, Amanda M Brandow
Pain is a complex multidimensional experience and the most common morbidity in patients with sickle cell disease (SCD). Tools to assess pain can be of use not only to guide pain treatment but also to provide insight into underlying pain neurobiology. Mechanisms of pain in SCD are multifactorial and are not completely elucidated. Although vaso-occlusion of microcirculation by sickled red cells is believed to be the underlying mechanism of acute vaso-occlusive pain, mechanisms for chronic pain and the transition from acute to chronic pain are under investigation...
December 8, 2017: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/29196870/changes-in-birth-related-pain-perception-impact-of-neurobiological-and-psycho-social-factors
#6
Sebastian Berlit, Stefanie Lis, Katharina Häfner, Nikolaus Kleindienst, Ulf Baumgärtner, Rolf-Detlef Treede, Marc Sütterlin, Christian Schmahl
PURPOSE: To analyse post-partum short- and long-term pain sensitivity and the influence of endogenous pain inhibition as well as distinct psycho-social factors on birth-related pain. METHODS: Pain sensitivity was assessed in 91 primiparous women at three times: 2-6 weeks before, one to 3 days as well as ten to 14 weeks after childbirth. Application of a pressure algometer in combination with a cold pressor test was utilised for measurement of pain sensitivity and assessment of conditioned pain modulation (CPM)...
December 1, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29186680/astrocytic-l-lactate-signaling-facilitates-amygdala-anterior-cingulate-cortex-synchrony-and-decision-making-in-rats
#7
Jun Wang, Jie Tu, Bing Cao, Li Mu, Xiangwei Yang, Mi Cong, Aruna S Ramkrishnan, Rosa H M Chan, Liping Wang, Ying Li
Human brain imaging studies have revealed the anterior cingulate cortex (ACC) as a key brain region for mediating visceral-pain-cognitive interactions. Recently, we characterized impairments of long-term potentiation and spike-field coherence in the basolateral amygdala (BLA)-ACC network in association with a decision-making deficit in rats with visceral hypersensitivity (VH). Now, by combining integrative neurobiological approaches, we show that ACC-reactive astrogliosis and activity-dependent impairment of lactate release occur in VH rats...
November 28, 2017: Cell Reports
https://www.readbyqxmd.com/read/29175204/cerebral-peak-alpha-frequency-predicts-individual-differences-in-pain-sensitivity
#8
Andrew J Furman, Timothy J Meeker, Jeremy C Rietschel, Sooyoung Yoo, Janusiya Muthulingam, Mariya Prokhorenko, Michael L Keaser, Ronald N Goodman, Ali Mazaheri, David A Seminowicz
The identification of neurobiological markers that predict individual predisposition to pain are not only important for development of effective pain treatments, but would also yield a more complete understanding of how pain is implemented in the brain. In the current study using electroencephalography (EEG), we investigated the relationship between the peak frequency of alpha activity over sensorimotor cortex and pain intensity during capsaicin-heat pain (C-HP), a prolonged pain model known to induce spinal central sensitization in primates...
November 21, 2017: NeuroImage
https://www.readbyqxmd.com/read/29146590/camkii%C3%AE-mediates-the-effect-of-il-17-to-promote-ongoing-spontaneous-and-evoked-pain-in-multiple-sclerosis
#9
Xiaoyu Hu, Fang Huang, Zaijie Jim Wang
Pain is a common and severe symptom in multiple sclerosis (MS), a chronic inflammatory and demyelinating disease of the central nervous system. The neurobiological mechanism underlying MS pain is poorly understood. In this study, we investigated the role of Ca(2+)/calmodulin dependent kinase type IIα (CaMKIIα) in driving chronic pain in MS using a mouse experimental autoimmune encephalomyelitis (EAE) model. We found that spinal CaMKIIα activity was enhanced in EAE correlating with the development of ongoing spontaneous pain and evoked hypersensitivity to mechanical and thermal stimuli...
November 16, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29097192/the-endocannabinoid-system-and-its-therapeutic-exploitation-in-multiple-sclerosis-clues-for-other-neuroinflammatory-diseases
#10
REVIEW
Valerio Chiurchiù, Mario van der Stelt, Diego Centonze, Mauro Maccarrone
Multiple sclerosis is the most common inflammatory demyelinating disease of the central nervous system, caused by an autoimmune response against myelin that eventually leads to progressive neurodegeneration and disability. Although the knowledge on its underlying neurobiological mechanisms has considerably improved, there is a still unmet need for new treatment options, especially for the progressive forms of the disease. Both preclinical and clinical data suggest that cannabinoids, derived from the Cannabis sativa plant, may be used to control symptoms such as spasticity and chronic pain, whereas only preclinical data indicate that these compounds and their endogenous counterparts, i...
October 31, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/29080714/hippocampal-morphology-mediates-biased-memories-of-chronic-pain
#11
Sara E Berger, Étienne Vachon-Presseau, Taha B Abdullah, Alex T Baria, Thomas J Schnitzer, A Vania Apkarian
Experiences and memories are often mismatched. While multiple studies have investigated psychological underpinnings of recall error with respect to emotional events, the neurobiological mechanisms underlying the divergence between experiences and memories remain relatively unexplored in the domain of chronic pain. Here we examined the discrepancy between experienced chronic low back pain (CBP) intensity (twice daily ratings) and remembered pain intensity (n = 48 subjects) relative to psychometric properties, hippocampus morphology, memory capabilities, and personality traits related to reward...
November 6, 2017: NeuroImage
https://www.readbyqxmd.com/read/29077871/from-mechanism-to-cure-renewing-the-goal-to-eliminate-the-disease-of-pain
#12
Theodore J Price, Michael S Gold
Objective: Persistent pain causes untold misery worldwide and is a leading cause of disability. Despite its astonishing prevalence, pain is undertreated, at least in part because existing therapeutics are ineffective or cause intolerable side effects. In this review, we cover new findings about the neurobiology of pain and argue that all but the most transient forms of pain needed to avoid tissue damage should be approached as a disease where a cure can be the goal of all treatment plans, even if attaining this goal is not yet always possible...
October 25, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/29068872/dopaminergic-tone-does-not-influence-pain-levels-during-placebo-interventions-in-patients-with-chronic-neuropathic-pain
#13
Ina Skyt, Kurosh Moslemi, Cathrine Baastrup, Kasper Grosen, Fabrizio Benedetti, Gitte L Petersen, Donald D Price, Kathryn T Hall, Ted J Kaptchuk, Peter Svensson, Troels S Jensen, Lene Vase
Placebo effects have been reported in patients with chronic neuropathic pain. Expected pain levels and positive emotions are involved in the observed pain relief, but the underlying neurobiology is largely unknown. Patients with neuropathic pain are highly motivated for pain relief, and as motivational factors such as expectations of reward, as well as pain processing in itself, are related to the dopaminergic system, it can be speculated that dopamine release contributes to placebo effects in neuropathic pain...
October 23, 2017: Pain
https://www.readbyqxmd.com/read/29024786/neurobiological-correlates-of-pain-avoidance-like-behavior-in-morphine-dependent-and-non-dependent-rats
#14
Amanda R Pahng, Rod I Paulsen, M Adrienne McGinn, Kimberly N Edwards, Scott Edwards
Repeated use of opioids can lead to the development of analgesic tolerance and dependence. Additionally, chronic opioid exposure can cause a paradoxical emergence of heightened pain sensitivity to noxious stimuli, termed hyperalgesia, which may drive continued or escalated use of opioids to manage worsening pain symptoms. Opioid-induced hyperalgesia has traditionally been measured in rodents via reflex-based assays, including the von Frey method. To better model the cognitive/motivational dimension of pain in a state of opioid dependence and withdrawal, we employed a recently developed non-reflex-based method for measuring pain avoidance-like behavior in animals (mechanical conflict avoidance test)...
October 9, 2017: Neuroscience
https://www.readbyqxmd.com/read/29016379/oxidative-stress-inflammation-and-neuroprogression-in-chronic-ptsd
#15
Mark W Miller, Alex P Lin, Erika J Wolf, Danielle R Miller
Posttraumatic stress disorder is a serious and often disabling syndrome that develops in response to a traumatic event. Many individuals who initially develop the disorder go on to experience a chronic form of the condition that in some cases can last for many years. Among these patients, psychiatric and medical comorbidities are common, including early onset of age-related conditions such as chronic pain, cardiometabolic disease, neurocognitive disorders, and dementia. The hallmark symptoms of posttraumatic stress-recurrent sensory-memory reexperiencing of the trauma(s)-are associated with concomitant activations of threat- and stress-related neurobiological pathways that occur against a tonic backdrop of sleep disturbance and heightened physiological arousal...
October 9, 2017: Harvard Review of Psychiatry
https://www.readbyqxmd.com/read/28968188/the-opioid-epidemic-crisis-and-solutions
#16
Phil Skolnick
The widespread abuse of prescription opioids and a dramatic increase in the availability of illicit opioids have created what is commonly referred to as the opioid epidemic. The magnitude of this epidemic is startling: About 4% of the adult US population misuses prescription opioids, and in 2015, more than 33,000 deaths were attributable to overdose with licit and illicit opioids. Increasing the availability of medication-assisted treatments (such as buprenorphine and naltrexone), the use of abuse-deterrent formulations, and the adoption of US Centers for Disease Control and Prevention prescribing guidelines all constitute short-term approaches to quell this epidemic...
October 2, 2017: Annual Review of Pharmacology and Toxicology
https://www.readbyqxmd.com/read/28967364/open-issues-in-the-assessment-and-management-of-pain-in-juvenile-idiopathic-arthritis
#17
REVIEW
Gabriella Giancane, Alessandra Alongi, Silvia Rosina, Serena Calandra, Alessandro Consolaro, Angelo Ravelli
Pain is the major symptom of children with juvenile idiopathic arthritis (JIA) and its reduction is a key goal of treatment. It is widely agreed that assessment of pain is a fundamental component of the rheumatology evaluation and should be carried out at each clinic visit. However, so far there has been insufficient attention to the impact and causes of pain in children with chronic arthritis in both clinical practice and research. Quantitative measures of pain are seldom used regularly in daily care and pain assessment has not been incorporated in the most popular composite outcome measures for JIA, including the criteria employed to measure improvement in therapeutic trials...
September 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28935098/your-system-has-been-hijacked-the-neurobiology-of-chronic-pain
#18
Erica B Baller, David A Ross
No abstract text is available yet for this article.
October 15, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28880891/altered-right-anterior-insular-connectivity-and-loss-of-associated-functions-in-adolescent-chronic-fatigue-syndrome
#19
Laura Anne Wortinger, Merete Glenne Øie, Tor Endestad, Vegard Bruun Wyller
Impairments in cognition, pain intolerance, and physical inactivity characterize adolescent chronic fatigue syndrome (CFS), yet little is known about its neurobiology. The right dorsal anterior insular (dAI) connectivity of the salience network provides a motivational context to stimuli. In this study, we examined regional functional connectivity (FC) patterns of the right dAI in adolescent CFS patients and healthy participants. Eighteen adolescent patients with CFS and 18 aged-matched healthy adolescent control participants underwent resting-state functional magnetic resonance imaging...
2017: PloS One
https://www.readbyqxmd.com/read/28858914/neuropathic-symptoms-of-the-ocular-surface-dryness-pain-and-itch
#20
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
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