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pain neurobiology

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https://www.readbyqxmd.com/read/29346235/posttraumatic-stress-in-children-after-injury-the-role-of-acute-pain-and-opioid-medication-use
#1
Aimee K Hildenbrand, Nancy Kassam-Adams, Lamia P Barakat, Kristen L Kohser, Jeffrey A Ciesla, Douglas L Delahanty, Joel A Fein, Lindsay B Ragsdale, Meghan L Marsac
OBJECTIVES: After injury, many children experience posttraumatic stress symptoms (PTSS) that negatively impact recovery. Acute pain and PTSS share neurobiological pathways, and acute dosage of morphine has been linked to reduced PTSS in naturalistic studies. However, the complex interactions between pain, morphine and other opioid use, and PTSS have yet to be investigated in robust pediatric samples.This prospective, longitudinal study examined relationships between acute pain, opioid medications, and PTSS after pediatric injury...
January 16, 2018: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29325708/promising-roles-for-pharmacists-in-addressing-the-u-s-opioid-crisis
#2
Wilson M Compton, Christopher M Jones, Jack B Stein, Eric M Wargo
Overdoses of prescription or illicit opioids claimed the lives of 116 Americans each day in 2016, and the crisis continues to escalate. As healthcare systems evolve to address the crisis, the potential of pharmacists to make a positive difference is significant. In addition to utilizing available prescription drug monitoring programs to help prevent diversion of opioids, practicing pharmacists can be alert for signs of opioid misuse by patients (e.g., multiple prescriptions from different physicians) as well as inappropriate prescribing or hazardous drug combinations that physicians may not be aware of (e...
December 31, 2017: Research in Social & Administrative Pharmacy: RSAP
https://www.readbyqxmd.com/read/29302219/individual-differences-in-the-neuropsychopathology-of-addiction
#3
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
#4
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/29274881/neurobiological-mechanisms-of-antiallodynic-effect-of-transcranial-direct-current-stimulation-tdcs-in-a-mice-model-of-neuropathic-pain
#5
Andressa de Souza, Daniel F Martins, Liciane Fernandes Medeiros, Catharina Nucci, Thiago César Martins, Aline Siteneski, Wolnei Caumo, Adair Roberto Soares Dos Santos, Iraci L S Torres
BACKGROUND: Neuropathic pain is relatively common and occurs in approximately 6-8% of the population. It is associated with allodynia and hyperalgesia. Thus, non-pharmacological treatments, such as transcranial direct current stimulation (tDCS) may be useful for relieving pain. OBJECTIVES: This study aimed to investigate the antiallodynic effect of tDCS in a mice model of neuropathic pain, and the underlying neurotransmission systems that could drive these effects...
December 21, 2017: Brain Research
https://www.readbyqxmd.com/read/29244629/evolution-shame-and-psychotherapy
#6
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
#7
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
#8
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/29212893/comparative-physiology-of-nociception-and-pain
#9
REVIEW
Lynne U Sneddon
The study of diverse animal groups allows us to discern the evolution of the neurobiology of nociception. Nociception functions as an important alarm system alerting the individual to potential and actual tissue damage. All animals possess nociceptors, and, in some animal groups, it has been demonstrated that there are consistent physiological mechanisms underpinning the nociceptive system. This review considers the comparative biology of nociception and pain from an evolutionary perspective.
January 1, 2018: Physiology
https://www.readbyqxmd.com/read/29200428/low-empathy-like-behaviour-in-male-mice-associates-with-impaired-sociability-emotional-memory-physiological-stress-reactivity-and-variations-in-neurobiological-regulations
#10
Giovanni Laviola, Francesca Zoratto, Danilo Ingiosi, Valentina Carito, Damien Huzard, Marco Fiore, Simone Macrì
Deficits in empathy have been proposed to constitute a hallmark of several psychiatric disturbances like conduct disorder, antisocial and narcissistic personality disorders. Limited sensitivity to punishment, shallow or deficient affect and reduced physiological reactivity to environmental stressors have been often reported to co-occur with limited empathy and contribute to the onset of antisocial phenotypes. Empathy in its simplest form (i.e. emotional contagion) is addressed in preclinical models through the evaluation of the social transmission of emotional states: mice exposed to a painful stimulus display a higher response if in the presence of a familiar individual experiencing a higher degree of discomfort, than in isolation...
2017: PloS One
https://www.readbyqxmd.com/read/29197095/oro-facial-pain-and-temporomandibular-disorders-classification-systems-a-critical-appraisal-and-future-directions
#11
REVIEW
G D Klasser, D Manfredini, J-P Goulet, A De Laat
It is a difficult undertaking to design a classification system for any disease entity, let alone for oro-facial pain (OFP) and more specifically for temporomandibular disorders (TMD). A further complication of this task is that both physical and psychosocial variables must be included. To augment this process, a two-step systematic review, adhering to PRISMA guidelines, of the classification systems published during the last 20 years for OFP and TMD was performed. The first search step identified 190 potential citations which ultimately resulted in only 17 articles being included for in-depth analysis and review...
December 2, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29196870/changes-in-birth-related-pain-perception-impact-of-neurobiological-and-psycho-social-factors
#12
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
#13
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
#14
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
#15
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/29113827/toxins-in-neurobiology-new-tools-from-old-molecules
#16
REVIEW
Irina Vetter
Molecules with neurotoxic properties are nearly ubiquitous in nature and are produced by some simple unicellular organisms including algae and bacteria, as well as complex multicellular organisms ranging from plants to invertebrate and vertebrate animals. While the biological roles of many neurotoxins are unknown, and some are simply metabolic waste products, it is perhaps not surprising that most toxins likely provide important survival advantages given the often substantial metabolic production cost to toxic organisms...
November 4, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29110899/the-role-of-the-hippocampus-in-predicting-future-posttraumatic-stress-disorder-symptoms-in-recently-traumatized-civilians
#17
Sanne J H van Rooij, Jennifer S Stevens, Timothy D Ely, Rebecca Hinrichs, Vasiliki Michopoulos, Sterling J Winters, Yvonne E Ogbonmwan, Jaemin Shin, Nicole R Nugent, Lauren A Hudak, Barbara O Rothbaum, Kerry J Ressler, Tanja Jovanovic
BACKGROUND: Understanding the neurobiological mechanisms that predict posttraumatic stress disorder (PTSD) in recent trauma survivors is important for early interventions. Impaired inhibition of fear or behavioral responses is thought to be central to PTSD symptomatology, but its role in predicting PTSD is unknown. Here we examine whether brain function during response inhibition early after a civilian trauma can predict future PTSD symptoms. METHODS: Participants (original sample, n = 27; replication sample, n = 31) were recruited in the emergency department within 24 hours of trauma exposure...
September 20, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29108801/mechanisms-of-placebo-analgesia-a-dual-process-model-informed-by-insights-from-cross-species-comparisons
#18
REVIEW
Scott M Schafer, Stephan Geuter, Tor D Wager
Placebo treatments are pharmacologically inert, but are known to alleviate symptoms across a variety of clinical conditions. Associative learning and cognitive expectations both play important roles in placebo responses, however we are just beginning to understand how interactions between these processes lead to powerful effects. Here, we review the psychological principles underlying placebo effects and our current understanding of their brain bases, focusing on studies demonstrating both the importance of cognitive expectations and those that demonstrate expectancy-independent associative learning...
November 3, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/29097192/the-endocannabinoid-system-and-its-therapeutic-exploitation-in-multiple-sclerosis-clues-for-other-neuroinflammatory-diseases
#19
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
#20
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
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