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Nociceptive pain

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https://www.readbyqxmd.com/read/28432612/evaluation-of-the-analgesia-nociception-index-ani-in-healthy-awake-volunteers
#1
Rami Issa, Marco Julien, Elizabeth Décary, Olivier Verdonck, Louis-Philippe Fortier, Pierre Drolet, Philippe Richebé
BACKGROUND: Analgesia might be evaluated with simple changes in vital signs, a non-specific and non-sensitive method. Heart rate variability (HRV) correlates with autonomous nervous system activity and can be used to evaluate painful stimuli. Heart rate variability is then transformed into a numeric scale called the analgesia nociception index (ANI), where higher values represent predominant parasympathetic tone, thus low nociception. Under general anesthesia, the ANI decreases following painful stimuli and increases after administration of analgesia, but significant interindividual variability is present...
April 21, 2017: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/28432164/use-of-gabapentin-in-the-treatment-of-chronic-pain-in-an-adolescent-with-sickle-cell-disease
#2
Cátia R Correia, Ana Teresa Soares, Laura Azurara, Maria João Palaré
Vaso-occlusive crises are the most common manifestation of sickle cell disease (SCD) and the main cause of hospital admission in these patients. There is emerging evidence that vaso-occlusive pain has both nociceptive and neuropathic components. However, the treatment of SCD-related pain with neuropathic drugs has not yet been systematically studied, particularly in children. We describe a 14-year-old girl with SCD and multiple hospital admissions for pain management for severe acute vaso-occlusive pain episodes...
April 21, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28431749/pharmacological-advances-in-the-multimodal-management-of-perioperative-analgesia
#3
M Matute Crespo, A Montero Matamala
The concept of multimodal analgesia is currently widespread in our clinical practice. The aim of multimodal analgesia is to reduce the side effects derived from the drugs or techniques used for the control of pain together with greater effectiveness (combination of multiple mechanisms of action) with the maximum efficiency, that is, to combine different pharmacodynamics (synergistic or additive effects) and pharmacokinetics, in the context of a predictable acute pain model, thus allowing a prior strategy such as the model of acute postoperative pain...
April 18, 2017: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/28430671/elevated-production-of-nociceptive-cc-chemokines-and-se-selectin-in-patients-with-low-back-pain-and-the-effects-of-spinal-manipulation-a-non-randomized-clinical-trial
#4
Julita A Teodorczyk-Injeyan, Marion McGregor, John J Triano, H Stephen Injeyan
BACKGROUND: The involvement of inflammatory components in the pathophysiology of low back pain is poorly understood. It has been suggested that spinal manipulative therapy (SMT) may exert anti-inflammatory effects. PURPOSE: To determine the involvement of inflammation-associated chemokines (CC series) in the pathogenesis of non-specific low back pain and to evaluate the effect of SMT on that process. METHODS: Patients presenting with non-radicular, non-specific low back pain (minimum pain score 3 on 10 point visual analogue scale, VAS) were recruited according to stringent inclusion criteria...
April 19, 2017: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28428628/inflammatory-and-neuropathic-nociception-is-preserved-in-gpr55-knockout-mice
#5
Lawrence M Carey, Tannia Gutierrez, Liting Deng, Wan-Hung Lee, Ken Mackie, Andrea G Hohmann
The G-protein coupled receptor GPR55 has been postulated to serve as a novel cannabinoid receptor. A previous report indicated that GPR55 knockout mice fail to develop mechanical hyperalgesia, suggesting a pro-nociceptive role for GPR55 in the control of nociceptive responding. However, GPR55 knockout mice remain incompletely characterized in models of pathological pain. Here we provide a comprehensive assessment of responses of GPR55 knockout and wild-type mice to mechanical and thermal (heat, cold) stimulation in multiple, mechanistically distinct models of inflammatory and neuropathic pain...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28428504/-assessment-and-strategy-for-nociceptive-pain-in-cancer
#6
Gakuji Osawa, Etsuko Aruga
Pain is classified as either nociceptive pain, which results from a nociceptor stimulation, or neuropathic pain, which results from a lesion of the neural pathway. Clinically, in many cases, pain consists of a single origin but multiple origins are also possible. In this paper, we outline an assessment and strategy for nociceptive pain in cancer. The onset time, location, feature, strength, and etiology were included as categories for the assessment of pain. Furthermore, we added a psychosocial assessment to the physical assessment, which ensured comprehensive pain evaluation...
April 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28425312/activation-of-spinal-alpha-7-nicotinic-acetylcholine-receptor-shortens-the-duration-of-remifentanil-induced-postoperative-hyperalgesia-by-upregulating-kcc2-in-the-spinal-dorsal-horn-in-rats
#7
Wei Gu, Wei Zhang, Yishan Lei, Yin Cui, Shuaishuai Chu, Xiaoping Gu, Zhengliang Ma
Background Accumulating evidence has shown that the signal from spinal brain-derived neurotrophic factor/tyrosine receptor kinase B-K(+)-Cl(-) cotransporter-2 plays a critical role in the process of pain hypersensitivity. The activation of alpha-7 nicotinic acetylcholine receptors could have an analgesic effect on remifentanil-induced postoperative hyperalgesia. Nevertheless, whether intrathecal administration of PNU-120596, an alpha-7 nicotinic acetylcholine receptors selective type II positive allosteric modulator, before surgery could affect the duration of remifentanil-induced postoperative hyperalgesia remains unknown, and the effects of alpha-7 nicotinic acetylcholine receptors activation on the brain-derived neurotrophic factor/tyrosine receptor kinase B-K(+)-Cl(-) cotransporter-2 signal in the spinal dorsal horn of rats with remifentanil-induced postoperative hyperalgesia is still enigmatic...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28425266/nitroglycerin-challenge-induces-lateralized-headache-in-nasociliarynerve-ligated-rats-implications-for-chronic-migraine
#8
Didem Akçali, Ahmet Deniz Belen, Avni Babacan, Hayrunnisa Bolay
BACKGROUND/AIM: Chronic migraine is a common debilitating disease with limited treatment options. We aimed to develop a novel model for chronic migraine by ligating the nasociliary nerve (NCL) and administering nitroglycerin (NTG) to exacerbate acute headache attacks. MATERIALS AND METHODS: Exacerbation of the headache was induced by NTG (10 mg/kg, subcutaneously) administered to male Wistar rats (n = 36) 14 days following unilateral NCL. Cutaneous and cold allodynia was tested using Von Frey (VF) filaments and acetone, respectively...
April 18, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28424313/reduction-in-activity-by-noxious-chemical-stimulation-is-ameliorated-by-immersion-in-analgesic-drugs-in-zebrafish
#9
Javier Lopez-Luna, Qussay Al-Jubouri, Waleed Al-Nuaimy, Lynne U Sneddon
Research has recently demonstrated that larval zebrafish show similar molecular responses to nociception to those of adults. Our study explored whether unprotected larval zebrafish exhibited altered behaviour after exposure to noxious chemicals and screened a range of analgesic drugs to determine their efficacy to reduce these responses. This approach aimed to validate larval zebrafish as a reliable replacement for adults as well as providing a high-throughput means of analysing behavioural responses. Zebrafish at 5 days post-fertilization were exposed to known noxious stimuli: acetic acid (0...
April 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28423567/cxcr1-2-pathways-in-paclitaxel-induced-neuropathic-pain
#10
Brandolini Laura, Benedetti Elisabetta, Ruffini Pier Adelchi, Russo Roberto, Cristiano Loredana, Antonosante Andrea, d'Angelo Michele, Castelli Vanessa, Giordano Antonio, Allegretti Marcello, Cimini Annamaria
Chemotherapy-induced peripheral neuropathy (CIPN) is a type of neuropathic pain that represents a frequent and serious consequence of chemotherapy agents. Over the last years, significant progress has been achieved in elucidating the underlying pathogenesis of CIPN. The interference of taxanes with microtubule has been proposed as a mechanism that leads to altered axonal transport and to permanent neurological damages. The inflammatory process activated by chemotherapeutic agents has been considered as a potential trigger of nociceptive process in CIPN...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28422818/inhibition-of-metabotropic-glutamate-receptor-subtype-1-alters-the-excitability-of-the-commissural-pyramidal-neuron-in-the-rat-anterior-cingulate-cortex-after-chronic-constriction-injury-to-the-sciatic-nerve
#11
Shi-Hao Gao, Lin-Lin Shen, Hui-Zhong Wen, Yan-Dong Zhao, Huai-Zhen Ruan
BACKGROUND: Inhibition of the metabotropic glutamate receptor subtype 1 in the anterior cingulate cortex has an analgesic effect during sustained nociceptive hypersensitivity. However, the specific changes in different subtypes of anterior cingulate cortex layer 5 pyramidal neurons, as well as the distinct effect of metabotropic glutamate receptor subtype 1 inhibition on different neuronal subtypes, have not been well studied. METHODS: Retrograde labeling combined with immunofluorescence, whole cell clamp recording, and behavioral tests combined with RNA interference were performed in a rat model of chronic constriction injury to the sciatic nerve...
April 19, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28420943/neural-mobilization-treatment-decreases-glial-cells-and-brain-derived-neurotrophic-factor-expression-in-the-central-nervous-system-in-rats-with-neuropathic-pain-induced-by-cci-in-rats
#12
Aline Carolina Giardini, Fabio Martinez Dos Santos, Joyce Teixeira da Silva, Mara Evany de Oliveira, Daniel Oliveira Martins, Marucia Chacur
Background. Glial cells are implicated in the development of chronic pain and brain-derived neurotropic factor (BDNF) released from activated microglia contributes to the nociceptive transmission. Neural mobilization (NM) technique is a method clinically effective in reducing pain sensitivity. Here we examined the involvement of glial cells and BDNF expression in the thalamus and midbrain after NM treatment in rats with chronic constriction injury (CCI). CCI was induced and rats were subsequently submitted to 10 sessions of NM, every other day, beginning 14 days after CCI...
2017: Pain Research & Management: the Journal of the Canadian Pain Society
https://www.readbyqxmd.com/read/28420009/temporal-summation-and-motor-function-modulation-during-repeated-jaw-movements-in-patients-with-temporomandibular-disorder-pain-and-healthy-controls
#13
Yuanxiu Zhang, Sheng Shao, Jinglu Zhang, Lin Wang, Kelun Wang, Peter Svensson
Temporal summation of nociceptive inputs may be an important pathophysiological mechanism in temporomandibular disorders (TMD) pain; however, it remains unknown how natural jaw function relates to underlying pain mechanisms. This study evaluated changes in pain and movement patterns during repeated jaw movements in patients with painful temporomandibular joints (TMJ) compared with healthy controls. Twenty patients with TMD with TMJ pain, and an anterior disk displacement without reduction and 20 age- and gender-matched healthy volunteers were included...
March 31, 2017: Pain
https://www.readbyqxmd.com/read/28419379/central-sensitization-is-modulated-following-trigger-point-anesthetization-in-patients-with-chronic-pain-from-whiplash-trauma-a-double-blind-placebo-controlled-crossover-study
#14
N Ake Nystrom, Michael D Freeman
Objective. : Central sensitization (CS) with low peripheral pain thresholds (PPTs) is a common finding among patients with chronic pain after whiplash (CPWI). While it has been proposed that myofascial myofascial trigger points (MTrPs) may act as modulators of central sensitization, previously reported findings are conflicting and inconclusive. The present study was designed to investigate immediate responsiveness of CS to alterations in nociceptive input. Design.:  Controlled, double-blind, cross-over...
April 17, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28418213/pain-thresholds-supra-threshold-pain-and-lidocaine-sensitivity-in-patients-with-erythromelalgia-including-the-i848tmutation-in-nav-1-7
#15
T Helås, D Sagafos, I P Kleggetveit, H Quiding, B Jönsson, M Segerdahl, Z Zhang, H Salter, M Schmelz, E Jørum
OBJECTIVES: Nociceptive thresholds and supra-threshold pain ratings as well as their reduction upon local injection with lidocaine were compared between healthy subjects and patients with erythromelalgia (EM). METHODS: Lidocaine (0.25, 0.50, 1.0 or 10 mg/mL) or placebo (saline) was injected intradermally in non-painful areas of the lower arm, in a randomized, double-blind manner, to test the effect on dynamic and static mechanical sensitivity, mechanical pain sensitivity, thermal thresholds and supra-threshold heat pain sensitivity...
April 18, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28412220/inflammation-induced-glua1-trafficking-and-membrane-insertion-of-ca-2-permeable-ampa-receptors-in-dorsal-horn-neurons-is-dependent-on-spinal-tumor-necrosis-factor-pi3-kinase-and-protein-kinase-a
#16
G Wigerblad, J R Huie, H Z Yin, M Leinders, R A Pritchard, F J Koehrn, W-H Xiao, G J Bennett, R L Huganir, A R Ferguson, J H Weiss, C I Svensson, L S Sorkin
Peripheral inflammation induces sensitization of nociceptive spinal cord neurons. Both spinal tumor necrosis factor (TNF) and neuronal membrane insertion of Ca(2+) permeable AMPA receptor (AMPAr) contribute to spinal sensitization and resultant pain behavior, molecular mechanisms connecting these two events have not been studied in detail. Intrathecal (i.t.) injection of TNF-blockers attenuated paw carrageenan-induced mechanical and thermal hypersensitivity. Levels of GluA1 and GluA4 from dorsal spinal membrane fractions increased in carrageenan-injected rats compared to controls...
April 12, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28410821/-analgesia-nociception-index-for-perioperative-analgesia-monitoring-in-spinal-surgery
#17
Guldem Turan, Arzu Yıldırım Ar, Yıldız Yigit Kuplay, Oznur Demiroluk, Mustafa Gazi, Nur Akgun, Erhan Celikoglu
BACKGROUND AND OBJECTIVES: The Analgesia Nociception Index is an index used to measure the levels of pain, sympathetic system activity and heart rate variability during general anesthesia. In our study, Analgesia Nociception Index monitoring in two groups who had undergone spinal stabilization surgery and were administered propofol-remifentanil (Total Intravenous Anesthesia) and sevoflurane-remifentanyl anesthesia was compared regarding its significance for prediction of postoperative early pain...
April 11, 2017: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/28405172/mitogen-activated-protein-kinase-phosphatase-3-mkp-3-in-the-surgical-wound-is-necessary-for-the-resolution-of-postoperative-pain-in-mice
#18
Sladjana Skopelja-Gardner, Madhurima Saha, Perla Abigail Alvarado-Vazquez, Brenna S Liponis, Elena Martinez, E Alfonso Romero-Sandoval
Mitogen-activated protein kinase (MAPK) phosphatase-3 (MKP-3) and its substrates (extracellular signal-regulated kinase [ERK] and p38) play an important role in pathophysiological mechanisms of acute postoperative and chronic neuropathic pain in the spinal cord. This study aimed to understand the role of MKP-3 and its target MAPKs at the site of surgical incision in nociceptive behavior. Wild-type (WT) and MKP-3 knockout (KO) mice underwent unilateral plantar hind paw incision. Mechanical allodynia was assessed by using von Frey filaments...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28403418/pain-assessment-in-conscious-healthy-volunteers-a-crossover-study-evaluating-the-analgesia-nociception-index
#19
Q Yan, H Y An, Y Feng
No abstract text is available yet for this article.
April 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28401050/the-new-rome-iv-criteria-for-functional-gastrointestinal-disorders-in-infants-and-toddlers
#20
REVIEW
Judith Zeevenhooven, Ilan J N Koppen, Marc A Benninga
Functional gastrointestinal disorders (FGIDs) are common worldwide and cover a wide range of disorders attributable to the gastrointestinal tract that cannot be explained by structural or biochemical abnormalities. The diagnosis of these disorders relies on the symptom-based Rome criteria. In 2016 the Rome criteria were revised for infants/toddlers and for children and adolescents. In this review, we discuss the novel Rome IV criteria for infants and toddlers. The criteria for infant colic were drastically changed, whereas only minor changes were made for regurgitation, cyclic vomiting syndrome, functional diarrhea, infant dyschezia and functional constipation...
March 2017: Pediatric Gastroenterology, Hepatology & Nutrition
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