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Nociceptive pain

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https://www.readbyqxmd.com/read/29222936/role-of-central-oxytocin-and-dopamine-systems-in-nociception-and-their-possible-interactions-suggested-hypotheses
#1
Mohammed Gamal-Eltrabily, Alfredo Manzano-García
Central oxytocin and dopamine have an important role in the process of nociception at the spinal level as well as supraspinal structures, e.g. anterior cingulate cortex, insular cortex, amygdala, nucleus accumbens, and hypothalamus. Many studies have pointed out the importance of both systems in the pain descending modulatory system and in pain-related symptoms in some chronic disorders, e.g. Parkinson disease and fibromyalgia. The interaction between oxytocin and dopamine systems has been addressed in some motivational behaviors, e...
December 9, 2017: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/29221427/validity-of-the-dutch-modified-paindetect-questionnaire-for-patients-with-hip-or-knee-osteoarthritis
#2
Wietske Rienstra, Tim Blikman, Baukje Dijkstra, Jos van Raay, Geranda Slager, Sjoerd Bulstra, Martin Stevens, Inge van den Akker-Scheek
BACKGROUND: The modified painDETECT questionnaire (PDQ) is a self-reported questionnaire to discriminate between nociceptive and neuropathic-like pain in patients with knee/hip osteoarthritis (OA). This study aims to assess the structural and construct validity of this questionnaire. METHODS: Confirmatory factor analysis and hypothesis-testing was used. For 168 patients, predefined hypotheses were formulated on the correlation between the modified painDETECT and several other questionnaires, and in a subsample of 46 with pain pressure thresholds (PPTs)...
December 8, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/29213238/electrophysiological-and-pharmacological-analyses-of-nav1-9-voltage-gated-sodium-channel-by-establishing-a-heterologous-expression-system
#3
Xi Zhou, Zhen Xiao, Yan Xu, Yunxiao Zhang, Dongfang Tang, Xinzhou Wu, Cheng Tang, Minzhi Chen, Xiaoliu Shi, Ping Chen, Songping Liang, Zhonghua Liu
Nav1. 9 voltage-gated sodium channel is preferentially expressed in peripheral nociceptive neurons. Recent progresses have proved its role in pain sensation, but our understanding of Nav1.9, in general, has lagged behind because of limitations in heterologous expression in mammal cells. In this work, functional expression of human Nav1.9 (hNav1.9) was achieved by fusing GFP to the C-terminal of hNav1.9 in ND7/23 cells, which has been proved to be a reliable method to the electrophysiological and pharmacological studies of hNav1...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29213232/stress-induced-chronic-visceral-pain-of-gastrointestinal-origin
#4
REVIEW
Beverley Greenwood-Van Meerveld, Anthony C Johnson
Visceral pain is generally poorly localized and characterized by hypersensitivity to a stimulus such as organ distension. In concert with chronic visceral pain, there is a high comorbidity with stress-related psychiatric disorders including anxiety and depression. The mechanisms linking visceral pain with these overlapping comorbidities remain to be elucidated. Evidence suggests that long term stress facilitates pain perception and sensitizes pain pathways, leading to a feed-forward cycle promoting chronic visceral pain disorders such as irritable bowel syndrome (IBS)...
2017: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/29212893/comparative-physiology-of-nociception-and-pain
#5
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/29212606/a-prospective-study-of-breed-differences-in-the-thermal-pain-sensitivity-of-dogs
#6
James Bowden, Ngaio J Beausoleil, Kevin J Stafford, Michael A Gieseg, Janis Bridges
OBJECTIVE: To compare the thermal nociceptive thresholds (TNTs) of dogs from three working/sport breeds. STUDY DESIGN: Experimental prospective study. ANIMALS: Thirty healthy adult dogs of mixed age, sex and reproductive status, 10 of each of three breeds: Harrier Hound, Greyhound and New Zealand Huntaway. METHODS: On one day of each week for 4 weeks, unrestrained dogs were tested six times. TNTs were measured using a remotely activated device comprising a thermode attached to the thoracic limb, controlled by a microprocessor attached to the animal...
August 3, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/29209205/potentiation-of-morphine-induced-antinociception-by-propranolol-the-involvement-of-dopamine-and-gaba-systems
#7
Elham A Afify, Najlaa M Andijani
Tolerance to the analgesic effect of morphine is a major clinical problem which can be managed by co-administration of another drug. This study investigated the ability of propranolol to potentiate the antinociceptive action of morphine and the possible mechanisms underlying this effect. Antinociception was assessed in three nociceptive tests (thermal, hot plate), (visceral, acetic acid), and (inflammatory, formalin test) in mice and quantified by measuring the percent maximum possible effect, the percent inhibition of acetic acid-evoked writhing response, and the area under the curve values of number of flinches for treated mice, respectively...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29207902/analgesics-promote-welfare-and-sustain-tumour-growth-in-orthotopic-4t1-and-b16-mouse-cancer-models
#8
Jennifer Lofgren, Amy L Miller, Claudia Chui Shan Lee, Carla Bradshaw, Paul Flecknell, Johnny Roughan
Murine orthotopic cancer models often require surgery, potentially causing pain or distress. However, analgesics are often withheld because they may alter tumour development. Two orthotopically implanted cancers were investigated in mice pre-treated with meloxicam (10 mg/kg), buprenorphine (0.2 mg/kg) or saline (1 ml/kg). Tumours were imaged and welfare was assessed using body weight, behaviour and nociceptive responses. In study 1, BALB/c mice were inoculated with 4T1 mammary carcinoma or saline during surgery or anaesthesia...
January 1, 2017: Laboratory Animals
https://www.readbyqxmd.com/read/29204732/peripheral-leptin-signaling-mediates-formalin-induced-nociception
#9
Zhi-Jing Hu, Wei Han, Chang-Qing Cao, Qi-Liang Mao-Ying, Wen-Li Mi, Yan-Qing Wang
Accumulating evidence suggests that obesity is associated with chronic pain. However, whether obesity is associated with acute inflammatory pain is unknown. Using a well-established obese mouse model induced by a high-fat diet, we found that: (1) the acute thermal pain sensory threshold did not change in obese mice; (2) the model obese mice had fewer nociceptive responses in formalin-induced inflammatory pain tests; restoring the obese mice to a chow diet for three weeks partly recovered their pain sensation; (3) leptin injection induced significant phosphorylation of STAT3 in control mice but not in obese mice, indicating the dysmodulation of topical leptin-leptin receptor signaling in these mice; and (4) leptin-leptin receptor signaling-deficient mice (ob/ob and db/db) or leptin-leptin receptor pathway blockade with a leptin receptor antagonist and the JAK2 inhibitor AG 490 in wild-type mice reduced their nociceptive responses in formalin tests...
December 5, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/29201256/neuropeptides-and-atp-signaling-in-the-trigeminal-ganglion
#10
REVIEW
Tetsuya Goto, Haruki Iwai, Eriko Kuramoto, Atsushi Yamanaka
Peripheral nociceptive stimuli from orofacial structures are largely transmitted by the trigeminal nerve. According to the peripheral noxious stimuli, neurons in the trigeminal ganglion (TG) produce neuropeptides such as substance P, and calcitonin-gene-related peptide, etc. Beside the production of neuropeptides, there exists unique non-synaptic interaction system between maxillary and mandibular neurons in the TG. Neurons in the TG are surrounded by satellite glial cells (SGCs), which initially receive the signal from TG neurons...
November 2017: Japanese Dental Science Review
https://www.readbyqxmd.com/read/29201195/anti-nociceptive-effect-of-dexmedetomidine-in-a-rat-model-of-monoarthritis-via-suppression-of-the-tlr4-nf-%C3%AE%C2%BAb-p65-pathway
#11
Dong Ji, Yalan Zhou, Shuangshuang Li, Dai Li, Hui Chen, Yuanchang Xiong, Yuqiu Zhang, Hua Xu
As a therapeutic target for neuropathic pain, the anti-nociceptive effects of α 2-adrenoceptors (α2AR) have attracted attention. Dexmedetomidine (DEX), a potent and highly selective α2AR agonist, has exhibited significant analgesic effects in neuropathic pain, but the underlying mechanism has remained elusive. The present study investigated the effect of DEX on Toll-like receptor (TLR)4 and nuclear factor (NF)-κB p65 expression, as well as the production of pro-inflammatory cytokines. The rat monoarthritis (MA) model was induced by intra-articular injection of complete Freund's adjuvant (CFA) at the ankle joint...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29200015/elevated-production-of-nociceptive-cc-chemokines-and-se-selectin-in-patients-with-low-back-pain-and-the-effects-of-spinal-manipulation-a-nonrandomized-clinical-trial
#12
Julita A Teodorczyk-Injeyan, Marion McGregor, John J Triano, Stephen H Injeyan
BACKGROUND: The involvement of inflammatory components in the pathophysiology of low back pain (LBP) is poorly understood. It has been suggested that spinal manipulative therapy (SMT) may exert anti-inflammatory effects. PURPOSE: The purpose of this study was to determine the involvement of inflammation-associated chemokines (CC series) in the pathogenesis of nonspecific LBP and to evaluate the effect of SMT on that process. METHODS: Patients presenting with nonradicular, nonspecific LBP (minimum pain score 3 on 10-point visual analog scale) were recruited according to stringent inclusion criteria...
January 2018: Clinical Journal of Pain
https://www.readbyqxmd.com/read/29199560/lion-s-mane-medicinal-mushroom-hericium-erinaceus-agaricomycetes-modulates-purinoceptor-coupled-calcium-signaling-and-murine-nociceptive-behavior
#13
Pei-Shan Liu, Sheau-Huei Chueh, Chin-Chu Chen, Li-Ya Lee, Li-Yen Shiu
Hericium erinaceus is well known for the neurotrophic effect it confers by promoting nerve growth factor biosynthesis. We discovered a novel bioactivity of H. erinaceus in its ability to suppress adenosine triphosphate (ATP)-induced calcium signaling in neuronal PC12 cells. ATP, known primarily as a neurotransmitter, also acts on purinoceptors (P2 purinergic receptor [P2R]) to generate the cellular calcium signaling and secretion that mediate P2R physiological manifestations, including pain. Chronic pain reduces quality of life...
2017: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/29199137/brodmann-area-10-collating-integrating-and-high-level-processing-of-nociception-and-pain
#14
REVIEW
Ke Peng, Sarah C Steele, Lino Becerra, David Borsook
Multiple frontal cortical brain regions have emerged as being important in pain processing, whether it be integrative, sensory, cognitive, or emotional. One such region, Brodmann Area 10 (BA 10), is the largest frontal brain region that has been shown to be involved in a wide variety of functions including risk and decision making, odor evaluation, reward and conflict, pain, and working memory. BA 10, also known as the anterior prefrontal cortex, frontopolar prefrontal cortex or rostral prefrontal cortex, is comprised of at least two cytoarchitectonic sub-regions, medial and lateral...
November 30, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/29199079/nociceptive-cortical-activity-is-dissociated-from-nociceptive-behavior-in-newborn-human-infants-under-stress
#15
Laura Jones, Lorenzo Fabrizi, Maria Laudiano-Dray, Kimberley Whitehead, Judith Meek, Madeleine Verriotis, Maria Fitzgerald
Newborn infants display strong nociceptive behavior in response to tissue damaging stimuli, and this is accompanied by nociceptive activity generated in subcortical and cortical areas of the brain [1, 2]. In the absence of verbal report, these nociceptive responses are used as measures of pain sensation in newborn humans, as they are in animals [3, 4]. However, many infants are raised in a physiologically stressful environment, and little is known about the effect of background levels of stress upon their pain responses...
November 23, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/29198549/development-and-validation-of-a-taiwan-version-of-the-id-pain-questionnaire-id-pain-t
#16
Chih-Chao Yang, Long-Sun Ro, Yu-Chuan Tsai, Kon-Ping Lin, Wei-Zen Sun, Wei-Tse Fang, Shuu-Jiun Wang
BACKGROUND: Neuropathic pain (NeP) is distinct from nociceptive pain and has different underlying mechanisms requiring specific treatment strategies. To aid diagnosis, self-administered screening questionnaires (such as ID Pain) have been developed to help physicians identify patients with NeP. The aim of this study was to develop and validate a translated ID Pain questionnaire for Taiwanese subjects (ID Pain-T). METHODS: ID Pain, a 6-item self-administered questionnaire, score ranged from -1 to 5, was translated from English into Mandarin Chinese using local terms and back-translated by an expert panel...
November 30, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/29197566/local-subcutaneous-injection-of-chlorogenic-acid-inhibits-the-nociceptive-trigeminal-spinal-nucleus-caudalis-neurons-in-rats
#17
Kaede Kakita, Hirona Tsubouchi, Mayu Adachi, Shiori Takehana, Yoshihito Shimazu, Mamoru Takeda
Acute administration of chlorogenic acid (CGA) in vitro was recently shown to modulate potassium channel conductance and acid-sensing ion channels (ASICs) in the primary sensory neurons; however, in vivo peripheral effects of CGA on the nociceptive mechanical stimulation of trigeminal neuronal activity remains to be determined. The present study investigated whether local administration of CGA in vivo attenuates mechanical stimulation-induced excitability of trigeminal spinal nucleus caudalis neuronal (SpVc) activity in rats...
November 29, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/29197121/the-clinical-anatomy-of-fibromyalgia
#18
REVIEW
Shehzad Khalid, Emily Simonds, Marios Loukas, R Shane Tubbs
INTRODUCTION: Fibromyalgia is a disorder characterized by pain and a spectrum of psychological comorbidities, rendering treatment difficult and often a financial burden. Findings regarding diagnosis, prevalence, comorbidities, and potential pathophysiological links are discussed herein. Fibromyalgia is a complex disorder and there are specific criteria that patients must meet for diagnosis, including scores on fibromyalgia questionnaires, commonalities of age, gender, menopause status, sleep disturbances, and mood symptoms...
December 2, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/29196860/role-of-thrombin-in-soluble-thrombomodulin-induced-suppression-of-peripheral-hmgb1-mediated-allodynia-in-mice
#19
Ryuichi Tsujita, Maho Tsubota, Yusuke Hayashi, Haruka Saeki, Fumiko Sekiguchi, Atsufumi Kawabata
High mobility group box 1 (HMGB1), a nuclear protein, once released into the extracellular space under pathological conditions, plays a pronociceptive role in redox-dependent distinct active forms, all-thiol HMGB1 (at-HMGB1) and disulfide HMGB1 (ds-HMGB1), that accelerate nociception through the receptor for advanced glycation endproducts (RAGE) and Toll-like receptor 4 (TLR4), respectively. Thrombomodulin (TM), an endothelial membrane protein, and soluble TM, known as TMα, promote thrombin-mediated activation of protein C and also sequester HMGB1, which might facilitate thrombin degradation of HMGB1...
December 1, 2017: Journal of Neuroimmune Pharmacology: the Official Journal of the Society on NeuroImmune Pharmacology
https://www.readbyqxmd.com/read/29196027/cancer-chemotherapy-in-early-life-significantly-alters-the-maturation-of-pain-processing
#20
G J Hathway, Emily Murphy, Joseph Lloyd, Charles Greenspon, R P Hulse
Advances in paediatric cancer treatment have led to a ten year survival rate greater than 75%. Platinum-based chemotherapies (e.g.cisplatin) induce peripheral sensory neuropathy in adult and paedriatric cancer patients. The period from birth through to adulthood represents a period of maturation within nociceptive systems. Here we investigated how cisplatin impacts upon postnatal maturation of nociceptive systems. Neonatal Wistar rats (Postnatal day (P) 7) were injected (i.p.) daily with either vehicle (PBS) or cisplatin (1mg/kg) for five consecutive days...
November 28, 2017: Neuroscience
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