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Drug treatment neuropathic

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https://www.readbyqxmd.com/read/29447137/emerging-therapies-for-neuropathic-pain-new-molecules-or-new-indications-for-old-treatments
#1
Didier Bouhassira, Nadine Attal
Neuropathic pain represents a highly unmet medical need because most of the available treatments have a modest efficacy or dose-limiting side effects. Hence, novel therapeutic perspectives are warranted. Many compounds acting on new pain targets are in preclinical or early clinical development. Only few clinical trials have suggested their clinical relevance in neuropathic pain. This concerns in particular NaV1.7 antagonists and angiotensin type II inhibitors. Another type of emerging drug therapy in neuropathic pain is represented by drugs largely used for other indications, such as botulinum toxin A and the antiepileptic oxcarbazepine, which have recently found to be effective in peripheral neuropathic pain...
March 2018: Pain
https://www.readbyqxmd.com/read/29438840/efficacy-and-safety-of-combined-low-doses-of-either-diclofenac-or-celecoxib-with-gabapentin-versus-their-single-high-dose-in-treatment-of-neuropathic-pain-in-rats
#2
Mohamed A Ibrahim, Walaa Yehia Abdelzaher, Remon R Rofaeil, Soha Abdelwahab
Neuropathic pain is a worldwide health problem with no consensus regarding its optimal therapy. This study compared the analgesic effect and gastric, hepatic, and renal safety of combined low doses of diclofenac and celecoxib with gabapentin versus their individual high doses in the treatment of neuropathic pain in rats. Left sciatic nerve ligation was used as neuropathic pain model. Rats were allocated into 7 groups (7 rats for each): sham control; model group (received vehicle); Gaba-group (received gabapentin (100 mg/kg /day); Diclo 10-group (received diclofenac (10 mg/kg); Cele 10-group (received celecoxib (10 mg/kg/day); Gaba + Diclo 5 (receivedgabapentin(100 mg/kg /day) plus diclofenac (5 mg/kg); Gaba + Cele 5 (received gabapentin (100 mg/kg/day) plus celecoxib (5 mg/kg))...
February 10, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29435707/antinociceptive-effects-of-novel-epibatidine-analogs-through-activation-of-%C3%AE-4%C3%AE-2-nicotinic-receptors
#3
Weiwei Li, Jingyi Cai, Benjamin H Wang, Lanting Huang, Jing Fan, Yun Wang
The study of α4β2 nicotinic receptors has provided new indications in the treatment of pain. Efforts have been made to explore new α4β2 nicotinic receptor agonists, including TC-2559, as antinociceptive drugs. In this study, we discovered a set of novel epibatidine analogs with strong binding affinities to the α4β2 nicotinic receptors. Among these compounds, C-159, C-163, and C-9515 attenuated formalin-induced nociceptive responses in mice; C-9515 caused the most potent analgesic effect, which was blocked by mecamylamine, a non-selective nicotinic receptor antagonist...
February 2, 2018: Science China. Life Sciences
https://www.readbyqxmd.com/read/29430564/sensory-symptom-profiles-differ-between-trigeminal-and-thoracolumbar-postherpetic-neuralgia
#4
Stefanie Rehm, Moritz Groβkopf, Maria Kabelitz, Thomas Keller, Rainer Freynhagen, Thomas R Tölle, Ralf Baron
Introduction: Animal experimental evidence suggests that mechanisms of pain generation and response to treatment differ between neuropathic pain in the cephalic and the extracephalic innervation territories. Objectives: The objective of the study was to examine whether in humans an identical peripheral painful neuropathy is associated with different pain qualities and sensory abnormalities in the face as compared with the thoracic region. Methods: We retrospectively analysed epidemiological and clinical data of 639 patients with postherpetic neuralgia (PHN) in the face and at the trunk who were collected within a cross-sectional cohort survey and compared the respective sensory symptom profiles captured with the painDETECT questionnaire...
January 2018: Pain Reports (Baltimore, Md.)
https://www.readbyqxmd.com/read/29393487/effects-of-metformin-on-the-expression-of-ampk-and-stat3-in-the-spinal-dorsal-horn-of-rats-with-neuropathic-pain
#5
Anqi Ge, Shu Wang, Bei Miao, Ming Yan
Neuropathic pain (NP) is a frustrating and burdensome problem. Current treatments for NP have unendurable side effects and/or questionable efficacy, and once these therapies are stopped, the symptoms often return. Thus, novel drugs are needed to enhance the effectiveness of treatments for NP. One novel target for pain treatments is adenosine monophosphate‑activated protein kinase (AMPK), which regulates a variety of cellular processes, including protein translation, which is considered to be affected in NP...
February 1, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29392238/complex-regional-pain-syndrome-up-to-date
#6
Frank Birklein, Violeta Dimova
Complex regional pain syndrome (CRPS) was described for the first time in the 19th century by Silas Weir Mitchell. After the exclusion of other causes, CRPS is characterised by a typical clinical constellation of pain, sensory, autonomic, motor, or trophic symptoms which can no longer be explained by the initial trauma. These symptoms spread distally and are not limited to innervation territories. If CRPS is not improved in the acute phase and becomes chronic, the visible symptoms change throughout because of the changing pathophysiology; the pain, however, remains...
November 2017: Pain Reports (Baltimore, Md.)
https://www.readbyqxmd.com/read/29392225/effect-of-the-spider-toxin-tx3-3-on-spinal-processing-of-sensory-information-in-naive-and-neuropathic-rats-an-in-vivo-electrophysiological-study
#7
Gerusa D Dalmolin, Kirsty Bannister, Leonor Gonçalves, Shafaq Sikandar, Ryan Patel, Marta do Nascimento Cordeiro, Marcus Vinícius Gomez, Juliano Ferreira, Anthony H Dickenson
Introduction: Drugs that counteract nociceptive transmission in the spinal dorsal horn preferentially after nerve injury are being pursued as possible neuropathic pain treatments. In a previous behavioural study, the peptide toxin Tx3-3, which blocks P/Q- and R-type voltage-gated calcium channels, was effective in neuropathic pain models. Objectives: In the present study, we aimed to investigate the effect of Tx3-3 on dorsal horn neuronal responses in rats under physiological conditions and neuropathic pain condition induced by spinal nerve ligation (SNL)...
July 2017: Pain Reports (Baltimore, Md.)
https://www.readbyqxmd.com/read/29381725/long-term-effect-of-motor-cortex-stimulation-in-patients-suffering-from-chronic-neuropathic-pain-an-observational-study
#8
Dylan J H A Henssen, Erkan Kurt, Anne-Marie van Cappellen van Walsum, Inge Arnts, Jonne Doorduin, Tamas Kozicz, Robert van Dongen, Ronald H M A Bartels
BACKGROUND: Motor cortex stimulation (MCS) was introduced as a last-resort treatment for chronic neuropathic pain. Over the years, MCS has been used for the treatment of various pain syndromes but long-term follow-up is unknown. METHODS: This paper reports the results of MCS from 2005 until 2012 with a 3-year follow-up. Patients who suffered from chronic neuropathic pain treated with MCS were studied. The analgesic effect was determined as successful by decrease in pain-intensity on the visual analog scale (VAS) of at least 40%...
2018: PloS One
https://www.readbyqxmd.com/read/29377758/levorphanol-for-treatment-of-intractable-neuropathic-pain-in-cancer-patients
#9
Akhila Reddy, Amy Ng, Tarun Mallipeddi, Eduardo Bruera
Neuropathic pain in cancer patients is often difficult to treat, requiring a combination of several different pharmacological therapies. We describe two patients with complex neuropathic pain syndromes in the form of phantom limb pain and Brown-Sequard syndrome who did not respond to conventional treatments but responded dramatically to the addition of levorphanol. Levorphanol is a synthetic strong opioid that is a potent N-methyl-d-aspartate receptor antagonist, mu, kappa, and delta opioid receptor agonist, and reuptake inhibitor of serotonin and norepinephrine...
January 29, 2018: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/29370761/hepatitis-c-related-cryoglobulinemic-neuropathy-potential-role-of-oxcarbazepine-for-pain-control
#10
Rita Moretti, Paola Caruso, Matteo Dal Ben, Silvia Gazzin, Claudio Tiribelli
BACKGROUND: Peripheral neuropathy is one most common, limiting and invalidating neurological symptom in subjects with hepatitis C virus and mixed cryoglobulinemia. Notably, the medical therapy proposed to eradicate HCV, can frequently exacerbate the painful neuropathy. Therefore, neuropathy therapies are insufficient and inadequate, and comprise immunosuppressive drugs, such as steroid or cyclosporine, intravenous immunoglobulin or plasma exchange. These have shown variable success in case reports, with a presumably temporary effect, but with major side effects...
January 25, 2018: BMC Gastroenterology
https://www.readbyqxmd.com/read/29363579/repeated-morphine-produces-sensitization-to-reward-and-tolerance-to-anti-allodynia-in-male-and-female-rats-with-chemotherapy-induced-neuropathy
#11
Luke P Legakis, S Stevens Negus
Paclitaxel is a cancer chemotherapy drug with adverse effects that include chemotherapy-induced neuropathic pain (CINP) as well as depression of behavior and mood. In the clinical setting, opioids are often used concurrently with or following chemotherapy to treat pain related to the cancer or CINP, but repeated opioid exposure can also increase risk of opioid abuse. In this study, male and female Sprague Dawley rats were used to test the hypothesis that repeated 3.2 mg/kg morphine would induce tolerance to its antinociceptve effects in a mechanical sensitivity assay and increased expression of its abuse-related rewarding effects in an assay of intracranial self-stimulation (ICSS)...
January 23, 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29356180/severe-adverse-cutaneous-drug-reactions-to-antiepileptic-drugs-18-years-of-experience-in-a-tertiary-referral-dermatology-clinic-in-turkey
#12
E Özkaya, S Kılıç
Antiepileptic drugs (AEDs) are the mainstay of treatment for 1% of the human population suffering from epilepsy.1 They are also increasingly used for several non-epileptic neurological conditions, such as trigeminal neuralgia, neuropathic pain syndromes, migraine and psychiatric disorders.2 Three percent of patients who receive AEDs experience adverse cutaneous drug reactions (ACDR),3 which can range across a wide spectrum from mild to moderate eruptions, such as maculopapular rash and, urticaria, to severe and life-threatening conditions, such as drug reactions with eosinophilia and systemic symptoms (DRESS), Stevens-Johnson syndrome (SJS), and toxic epidermal necrolysis (TEN)...
January 22, 2018: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29355942/anion-exchanger-3-in-dorsal-root-ganglion-contributes-to-nerve-injury-induced-chronic-mechanical-allodynia-and-thermal-hyperalgesia
#13
Marian J Pérez-Rodríguez, Isabel Velazquez-Lagunas, Alejandro Pluma-Pluma, Paulino Barragán-Iglesias, Vinicio Granados-Soto
OBJECTIVE: To determine the role of anion exchanger 3 (AE3) in dorsal root ganglion (DRG) in nerve injury-induced chronic nociception in the rat. METHODS: Spared nerve injury (SNI) was used to induce neuropathic pain. Von Frey filaments and Hargreaves test were used to assess tactile allodynia and thermal hyperalgesia, respectively. Drugs were given by intrathecal administration. Western blotting was used to determine AE3 expression in DRG. KEY FINDINGS: SNI produced long-lasting mechanical allodynia and thermal hyperalgesia...
January 22, 2018: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/29346227/refractory-pain-management-in-amyloid-associated-peripheral-neuropathy
#14
Nafisseh S Warner, James C Watson, Markus A Bendel, Susan M Moeschler
OBJECTIVE: Systemic amyloidosis is a disease that often involves multiple organ systems, including the peripheral nervous system. Patients may present with severe, refractory neuropathic pain; however, the optimal treatment approach for pain for these patients remains unclear. CASE REPORT: A man with severe, refractory neuropathic pain in his bilateral upper and lower extremities and the trunk secondary to amyloid neuropathy is presented. Multiple medication trials, including neuropathic and opioid agents, produced considerable adverse effects and minimal relief...
January 17, 2018: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29343689/a-novel-%C3%AE-conopeptide-eu1-6-inhibits-n-type-cav2-2-calcium-channels-and-exhibits-potent-analgesic-activity
#15
Zhuguo Liu, Peter Bartels, Mahsa Sadeghi, Tianpeng Du, Qing Dai, Cui Zhu, Shuo Yu, Shuo Wang, Mingxin Dong, Ting Sun, Jiabin Guo, Shuangqing Peng, Ling Jiang, David J Adams, Qiuyun Dai
We here describe a novel α-conopeptide, Eu1.6 from Conus eburneus, which exhibits strong anti-nociceptive activity by an unexpected mechanism of action. Unlike other α-conopeptides that largely target nicotinic acetylcholine receptors (nAChRs), Eu1.6 displayed only weak inhibitory activity at the α3β4 and α7 nAChR subtypes and TTX-resistant sodium channels, and no activity at TTX-sensitive sodium channels in rat dorsal root ganglion (DRG) neurons, or opiate receptors, VR1, KCNQ1, L- and T-type calcium channels expressed in HEK293 cells...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29341457/different-effects-of-dexmedetomidine-and-midazolam-on-the-expression-of-nr2b-and-gabaa-%C3%AE-1-following-peripheral-nerve-injury-in-rats
#16
Jiayu Chen, Hanjun Li, Grewo Lim, Michael F McCabe, Wei Zhao, Yunli Yang, Weiqing Ma, Na Li
Neuropathic pain is a complex, chronic pain condition and the treatment is a major clinical challenge. Recent studies have shown that two FDA approved drugs dexmedetomidine (DEX) and midazolam (MZL), may be useful in treating neuropathic pain, but the mechanism is not fully dementated. Here, we investigated the effects and mechanisms of DEX and MZL treatment in the peripheral nerve injury model. Intramuscular injection with DEX and MZL attenuated the development of mechanical allodynia and thermal hyperalgesia in rats with chronic constriction injury (CCI)...
January 17, 2018: IUBMB Life
https://www.readbyqxmd.com/read/29339292/selective-hcn1-block-as-a-strategy-to-control-oxaliplatin-induced-neuropathy
#17
F Resta, L Micheli, A Laurino, V Spinelli, T Mello, L Sartiani, L Di Cesare Mannelli, E Cerbai, C Ghelardini, M N Romanelli, G Mannaioni, A Masi
Chemotherapy-Induced Peripheral Neuropathy (CIPN) is the most frequent adverse effect of pharmacological cancer treatments. The occurrence of neuropathy prevents the administration of fully-effective drug regimen, affects negatively the quality of life of patients, and may lead to therapy discontinuation. CIPN is currently treated with anticonvulsants, antidepressants, opioids and non-opioid analgesics, all of which are flawed by insufficient anti-hyperalgesic efficacy or addictive potential. Understandably, developing new drugs targeting CIPN-specific pathogenic mechanisms would dramatically improve efficacy and tolerability of anti-neuropathic therapies...
January 12, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29333821/opioid-treatment-for-mixed-pain-in-pediatric-patients-assisted-by-the-palliative-care-team-five-years-of-experience
#18
María L Yazde Puleio, Karina V Gómez, Ana Majdalani, Vilma Pigliapoco, Gisella Santos Chocler
Pain is defined as an unpleasant sensory and emotional experience associated with actual or potential tissue damage. Depending on its pathophysiological mechanism, it may be classified into nociceptive, neuropathic, and mixed pain. If pain is moderate to severe, a strong opioid should be administered and, when this is the case, morphine is the drug of choice. If morphine is ineffective or causes intolerable adverse effects, opioid rotation is recommended. Our objective was to describe the drug management for mixed pain used in patients assisted by the Palliative Care team of Hospital General de Niños Pedro de Elizalde between August 2011 and September 2015...
February 1, 2018: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/29332084/thalamic-deep-brain-stimulation
#19
Benjamin B Whiting, Alexander C Whiting, Donald M Whiting
The use of deep brain stimulation (DBS) of the thalamus has been proven to be a safe and efficacious treatment for the management of many diseases. The most common indication for thalamic DBS remains essential tremor (ET), one of the most common movement disorders in the world. ET patients should be considered for surgical intervention when their tremor has demonstrated to be refractory to medication, a characteristic estimated to be present in roughly 50% of ET cases. Advantages of DBS over thalamotomy include its reversibility, the ability to adjust stimulation settings to optimize efficacy and minimize side effects, the ability to perform bilateral procedures safely, and an association with a lower risk of postoperative cognitive problems...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29313436/down-regulation-of-kv4-3-channels-and-a-type-k-currents-in-v2-trigeminal-ganglion-neurons-of-rats-following-oxaliplatin-treatment
#20
Viacheslav Viatchenko-Karpinski, Jennifer Ling, Jianguo G Gu
Chemotherapy drugs such as oxaliplatin can increase nociceptive neuron excitability to result in neuropathic pain in orofacial and other regions in patients following chemotherapy. However, mechanisms underlying chemotherapy-induced increases of nociceptive neuron excitability are not fully understood. Kv4.3 channels are voltage-gated K+ channels mediating A-type K+ (IA) currents to control neuronal excitability. In the present study, we examined Kv4.3 channel expression on trigeminal neurons that innervate orofacial regions (V2 TG neurons) of rats using immunostaining method...
January 2018: Molecular Pain
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