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Neuropathic pain

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https://www.readbyqxmd.com/read/28654186/haloperidol-decreases-hyperalgesia-and-allodynia-induced-by-chronic-constriction-injury
#1
Josué Vidal Espinosa-Juárez, Osmar Antonio Jaramillo-Morales, Francisco Javier López-Muñoz
Neuropathic pain has proven to be a difficult condition to treat, so investigational therapy has been sought that may prove useful, such as the use of sigma-1 antagonists. Haloperidol (HAL) is a compound that shows a high affinity with these receptors, acting as an antagonist. Therefore, the objective of this study was to demonstrate its effect in an experimental model of neuropathic pain and corroborate its antagonistic action of the sigma-1 receptors under these conditions. BD-1063 was used as a sigma-1 antagonist control and gabapentin was used as a positive control...
June 27, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28653798/spinal-cord-injury-pain-instrument-and-paindetect-questionnaire-convergent-construct-validity-in-individuals-with-spinal-cord-injury
#2
S Franz, C Schuld, E P Wilder-Smith, L Heutehaus, S Lang, S Gantz, S Schuh-Hofer, R-D Treede, T N Bryce, H Wang, N Weidner
BACKGROUND: Neuropathic pain (NeuP) is a frequent sequel of spinal cord injury (SCI). The SCI Pain Instrument (SCIPI) was developed as a SCI-specific NeuP screening tool. A preliminary validation reported encouraging results requiring further evaluation in terms of psychometric properties. The painDETECT questionnaire (PDQ), a commonly applied NeuP assessment tool, was primarily validated in German, but not specifically developed for SCI and not yet validated according to current diagnostic guidelines...
June 27, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28652804/success-with-neurotropin-in-treating-pediatric-lower-extremity-pain-induced-by-spinal-cord-injury-after-epidural-anesthesia
#3
Mengye Zhu, Fuqing Zhou, Lingchao Li, Qin Yin, Mizhen Qiu, Yong Zhang
Spinal cord injury (SCI) complicated by epidural anesthesia, though rare, can result in neuropathic pain. However, the treatment for this kind of life-altering injury remains a challenge. A 7-year-old girl was referred with dyskinesia and severe pain in her right lower extremity due to an accidental SCI following lumbar puncture. After treatment with analgesics such as gabapentin, mecobalamin, and dexamethasone/methylprednisolone for 1 week, the myodynamia had improved, but progressive pain persisted. After treatment with neurotropin, a gradual decrease in visual analog scale score from 7 to 0 was observed...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28652428/grid-climbing-behaviour-as-a-pain-measure-for-cancer-induced-bone-pain-and-neuropathic-pain
#4
Sarah Falk, Simone Gallego-Pedersen, Nicolas C Petersen
Despite affecting millions of people, chronic pain is generally treated insufficiently. A major point of focus has been the lack of translation from preclinical data to clinical results, with the predictive value of chronic pain models being a major concern. In contrast to current focus on stimulus-based nociceptive responses in preclinical research, development of behavioural tests designed to quantify suspension of normal behaviour is likely a more equivalent readout for human pain-assessment tests. In this study, we quantified grid-climbing behaviour as a non-stimulus-evoked behavioural test for potential use as a measure of neuropathic and cancer-induced bone pain in mice...
July 2017: In Vivo
https://www.readbyqxmd.com/read/28652279/pregabalin-for-the-prevention-of-oxaliplatin-induced-painful-neuropathy-a-randomized-double-blind-trial
#5
Daniel Ciampi de Andrade, Manoel Jacobsen Teixeira, Ricardo Galhardoni, Karine S L Ferreira, Paula Braz Mileno, Nathalia Scisci, Alexandra Zandonai, William G J Teixeira, Daniel F Saragiotto, Valquíria Silva, Irina Raicher, Rubens Gisbert Cury, Ricardo Macarenco, Carlos Otto Heise, Mario Wilson Iervolino Brotto, Alberto Andrade de Mello, Marcelo Zini Megale, Luiz Henrique Curti Dourado, Luciana Mendes Bahia, Antonia Lilian Rodrigues, Daniella Parravano, Julia Tizue Fukushima, Jean-Pascal Lefaucheur, Didier Bouhassira, Evandro Sobroza, Rachel P Richelmann, Paulo M Hoff, Fernanda Valério da Silva, Thais Chile, Camila S Dale, Daniela Nebuloni, Luiz Senna, Helena Brentani, Rosana L Pagano, Ângela M de Souza
LESSONS LEARNED: Pregabalin is a medication that can decrease neuronal hyperexcitability, relieve neuropathic pain, and reach stable plasma levels after a titration period of only a few days.Its use during oxaliplatin infusions was not able to decrease the incidence of chronic, oxalipaltin-related neuropathic pain, compared with placebo. BACKGROUND: Patients with colorectal cancer (CRC) receiving oxaliplatin (OXA) develop acute and chronic painful oxaliplatin-induced peripheral neuropathy (OXAIPN)...
June 26, 2017: Oncologist
https://www.readbyqxmd.com/read/28652182/ulinastatin-attenuates-neuropathic-pain-via-the-atp-p2y2-receptor-pathway-in-rat-models
#6
Ying Shi, Wanxiang Qin, Fachuan Nie, Huizhong Wen, Kaizhi Lu, Jian Cui
Ulinastatin, a serine protease inhibitor, which has anti-inflammatory properties and neuroprotective effects, is used to treat acute inflammatory disorders. Recent evidence indicates that administration of ulinastatin alleviates pain in rat model of neuropathic pain. However, its effect on neuropathic pain and the underlying mechanism requires further study. In this study, we evaluated the role of intrathecal administration of ulinastatin in rats with sciatic nerve ligation and observed the effect of ulinastatin on the ATP/P2Y2 receptor pathway...
June 23, 2017: Gene
https://www.readbyqxmd.com/read/28651619/analgesic-effects-of-a-hydro-ethanolic-whole-plant-extract-of-synedrella-nodiflora-l-gaertn-in-paclitaxel-induced-neuropathic-pain-in-rats
#7
Patrick Amoateng, Samuel Adjei, Dorcas Osei-Safo, Kennedy Kwami Edem Kukuia, Irene Akwo Kretchy, Joseph Adusei Sarkodie, Benoit Banga N'Guessan
BACKGROUND: Synedrella nodiflora is used by traditional healers in Ghana for the management of epilepsy and pain. The hydro-ethanolic extract of the whole plant has demonstrated antinociceptive effect in various animal models of pain. This study investigated the potential benefit of the hydro-ethanolic extract in a rat model of paclitaxel-induced neuropathic pain. METHODS: Neuropathy was induced in rats by a continuous intraperitoneal administration of paclitaxel (2 mg/kg) for 5 days...
June 26, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28650175/bioactive-peptide-natural-products-as-lead-structures-for-medicinal-use
#8
Tam Dang, Roderich D Süssmuth
The need for new drugs for the treatment of various diseases is enormous. From the previous century until the present, numerous peptide and peptide-derived natural products have been isolated from bacteria and fungi. Hence, microorganisms play a pivotal role as sources for novel drugs with an emphasis on anti-infective agents. Various disciplines from biology, chemistry, and medicine are involved in early stages of the search for peptide natural products including taxonomy, microbiology, bioanalytics, bioinformatics, and medicinal chemistry...
June 26, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28649695/neuronal-aromatase-expression-in-pain-processing-regions-of-the-medullary-and-spinal-cord-dorsal-horn
#9
May Tran, Julia A Kuhn, João M Bráz, Allan I Basbaum
In both acute and chronic pain conditions, women tend to be more sensitive than men. This sex difference may be regulated by estrogens, such as estradiol, that are synthesized in the spinal cord and brainstem and act locally to influence pain processing. To identify a potential cellular source of local estrogen, here we examined the expression of aromatase, the enzyme that catalyzes the conversion of testosterone to estradiol. Our studies focused on primary afferent neurons and on their central targets in the spinal cord and medulla as well as in the nucleus of the solitary tract, the target of nodose ganglion-derived visceral afferents...
June 26, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28648406/n-2-morpholin-4-yl-ethyl-2-1naphthyloxy-acetamide-inhibits-the-chronic-constriction-injury-generated-hyperalgesia-via-the-antagonism-of-sigma-1-receptors
#10
Josué Vidal Espinosa-Juárez, Osmar Antonio Jaramillo-Morales, Gabriel Navarrete-Vázquez, Luis Alberto Melo Hernández, Myrna Déciga-Campos, Francisco Javier López-Muñoz
The most used therapeutic treatment to relieve neuropathic pain is that of neuromodulators such as anti-epileptics or anti-depressants; however, there are alternatives that may be potentially useful. The sigma-1 receptor is a therapeutic target that has shown favorable results at preclinical levels. The aim of this study was to evaluate the anti-hyperalgesic effect of N-(2-morpholin-4-yl-ethyl)-2-(1-naphthyloxy) acetamide (NMIN) in a chronic constriction injury model (CCI) and compare it both a sigma-1 antagonist (BD-1063) and also Gabapentin, as well as determine its possible role as an antagonist of sigma-1 receptors...
June 22, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28647288/gap-junctions-pannexins-and-pain
#11
REVIEW
David C Spray, Menachem Hanani
Enhanced expression and function of gap junctions and pannexin (Panx) channels has been associated with both peripheral and central mechanisms of pain sensitization. At the level of the sensory ganglia, evidence includes augmented gap junction and pannexin1 expression in glial cells and neurons in inflammatory and neuropathic pain models and increased synchrony and enhanced cross-excitation among sensory neurons by gap junction-mediated coupling. In spinal cord and in suprapinal areas, evidence is largely limited to increased expression of relevant proteins, although in several rodent pain models, hypersensitivity is reduced by treatment with gap junction/Panx1 channel blocking compounds...
June 21, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28646556/injury-induced-maladaption-and-dysregulation-of-calcium-channel-alpha-2-delta-subunit-proteins-and-its-contribution-to-neuropathic-pain-development
#12
REVIEW
Nian Gong, John Park, Z David Luo
Voltage gated calcium channels (VGCCs) play important roles in physiological functions including modulations of neurotransmitter release, neuronal network activities, intracellular signaling pathways, and gene expression. Some pathological conditions, including nerve injuries, can cause dysregulation of VGCCs and their subunits. This in turn can lead to functional maladaption of VGCCs and their subunits, which can contribute to development of disorders such as pain sensations. This review summarized recent findings related to maladaptive changes of dysregulated VGCC alpha-2-delta-1 subunit (Cav α2 δ1 ) with a focus on exploration of mechanisms underlying contribution of Cav α2 δ1 to pain signal transduction...
June 23, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28644196/cebranopadol-a-novel-first-in-class-analgesic-drug-candidate-first-experience-in-patients-with-chronic-low-back-pain-in-a-randomized-clinical-trial
#13
Annette Christoph, Marie-Henriette Eerdekens, Maurits Kok, Gisela Volkers, Rainer Freynhagen
Chronic low back pain (LBP) is a common condition, usually with involvement of nociceptive and neuropathic pain components, high economic burden and impact on quality of life. Cebranopadol is a potent, first-in-class drug candidate with a novel mechanistic approach, combining nociceptin/orphanin FQ peptide and opioid peptide receptor agonism. We conducted the first Phase II, randomized, doubleblind, placebo- and active-controlled trial, evaluating the analgesic efficacy, safety, and tolerability of cebranopadol in patients with moderate to severe chronic LBP with and without neuropathic pain component...
June 21, 2017: Pain
https://www.readbyqxmd.com/read/28644012/sigma-2-receptor-tmem97-agonists-produce-long-lasting-anti-neuropathic-pain-effects-in-mice
#14
James J Sahn, Galo L Mejia, Pradipta R Ray, Stephen F Martin, Theodore John Price
Neuropathic pain is an important medical problem with few effective treatments. The sigma 1 receptor (σ1R) is a potential target for neuropathic pain therapeutics, and antagonists for this receptor are effective in preclinical models and are currently in phase II clinical trials. Relatively little is known about the σ2R, which has recently been identified as transmembrane protein 97 (Tmem97). We generated a series of σ1R and σ2R/Tmem97 agonists and antagonists and tested them for efficacy in the mouse spared nerve injury (SNI) model...
June 23, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28643963/-neuropathic-component-of-low-back-pain
#15
Sandra Silva, Mirko D Gutzmann, Marc R Suter
Despite the advances in the understanding of the underlying mechanisms of chronic low back pain, treatment remains challenging in clinical practice. In this article we are focusing on the neuropathic component of chronic low back pain. Indeed, depending on which diagnostic tools are used, 16-55% of patients suffering from chronic low back pain present a neuropathic component. We here expose the specific mechanisms of neuropathic pain, the diagnostic tools available for their detection as well as the specific treatment options...
June 21, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28642117/soluble-epoxide-hydrolase-as-a-therapeutic-target-for-pain-inflammatory-and-neurodegenerative-diseases
#16
REVIEW
Karen M Wagner, Cindy B McReynolds, William K Schmidt, Bruce D Hammock
Eicosanoids are biologically active lipid signaling molecules derived from polyunsaturated fatty acids. Many of the actions of eicosanoid metabolites formed by cyclooxygenase and lipoxygenase enzymes have been characterized, however, the epoxy-fatty acids (EpFAs) formed by cytochrome P450 enzymes are newly described by comparison. The EpFA metabolites modulate a diverse set of physiologic functions that include inflammation and nociception among others. Regulation of EpFAs occurs primarily via release, biosynthesis and enzymatic transformation by the soluble epoxide hydrolase (sEH)...
June 19, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28639074/worsening-trends-in-analgesics-recommended-for-spinal-pain-in-primary-care
#17
Stephanie Mathieson, Lisa Valenti, Christopher G Maher, Helena Britt, Qiang Li, Andrew J McLachlan, Chung-Wei Christine Lin
PURPOSE: Limited evidence exists on secular trends of analgesics for spinal pain. We investigated general practitioner's (GP) recommendations of analgesic medicines for spinal pain and investigated characteristics associated with their recommendation. METHODS: We accessed data on spinal pain consultations from the Bettering the Evaluation and Care of Health (BEACH) database, a nationally representative database on GP activity in Australia. Data extracted included consultation details and management provided...
June 21, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28638895/chronic-orofacial-pain-burning-mouth-syndrome-and-other-neuropathic-disorders
#18
Raymond C Tait, McKenzie Ferguson, Christopher M Herndon
Chronic orofacial pain is a symptom associated with a wide range of neuropathic, neurovascular, idiopathic, and myofascial conditions that affect a significant proportion of the population. While the collective impact of the subset of the orofacial pain disorders involving neurogenic and idiopathic mechanisms is substantial, some of these are relatively uncommon. Hence, patients with these disorders can be vulnerable to misdiagnosis, sometimes for years, increasing the symptom burden and delaying effective treatment...
March 2017: Journal of Pain Management & Medicine
https://www.readbyqxmd.com/read/28637600/distinguishing-between-nociceptive-and-neuropathic-components-in-chronic-low-back-pain-using-behavioural-evaluation-and-sensory-examination
#19
N Spahr, D Hodkinson, K Jolly, S Williams, M Howard, M Thacker
BACKGROUND: Diagnosis of chronic low back pain (CLBP) is traditionally predicated on identifying underlying pathological or anatomical causes, with treatment outcomes modest at best. Alternately, it is suggested that identification of underlying pain mechanisms with treatments targeted towards specific pain phenotypes may yield more success. Differentiation between nociceptive and neuropathic components of CLBP is problematic; evidence suggests that clinicians fail to identify a significant neuropathic component in many CLBP patients...
February 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28636470/reply-to-highly-selective-a3-adenosine-receptor-agonists-relieve-chronic-neuropathic-pain
#20
Rodolfo Couto Maia
No abstract text is available yet for this article.
June 21, 2017: Expert Opinion on Therapeutic Patents
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