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https://www.readbyqxmd.com/read/28823008/neuropathic-pain-s-biopsychosocial-effects
#1
Esra Dogru Huzmeli, Ismet Melek
The aim of our study is to understand neuropathic pain's social, psychological, and biological effects on the patients. All of the patients who were diagnosed with neuropathic pain (NP) by a neurologist were invited to participate in the study. The diagnoses were made based on the patients' history and symptoms and the results of their neurological examinations. Demographic characteristics (age and pain duration), diagnoses, and medical histories of the patients were recorded. Average daily pain intensity was measured using a 100-mm visual analogue scale (VAS)...
August 19, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28822837/delayed-pain-decrease-following-m1-tdcs-in-spinal-cord-injury-a-randomized-controlled-clinical-trial
#2
Aurore Thibaut, Sandra Carvalho, Leslie Morse, Ross Zafonte, Felipe Fregni
Despite some encouraging findings for the treatment of neuropathic pain in patients with spinal cord injury (SCI), transcranial direct current stimulation (tDCS) directed to the primary motor cortex (M1) has faced some mixed results. Prior to translating this technology to clinical care, consistent results and durable effects need to be found. We, therefore, aimed to assess the direct and long-term effects of tDCS on pain following SCI. We performed a two-phase randomized sham-controlled clinical trial where patients received 5days of tDCS followed by at 3-month follow-up period (Phase I); then, Phase II consisted of 10days of tDCS with an 8-week follow-up period...
August 16, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28822786/leptin-is-essential-for-spinal-microglial-activation-and-neuropathic-pain-after-preganglionic-cervical-root-avulsion
#3
Kai-Ting Chang, Yi-Lo Lin, Chi-Te Lin, Chen-Jei Hong, May-Jywan Tsai, Wen-Cheng Huang, Yang-Hsin Shih, Yi-Yen Lee, Henrich Cheng, Ming-Chao Huang
AIMS: Preganglionic cervical root avulsion (PCRA) affects both the peripheral and central nervous systems and is often associated with neuropathic pain. Unlike peripheral nerve injuries (PNI), central lesions caused by disruption of cervical roots from the spinal cord following PCRA contribute to the generation of neuropathic pain. Leptin is involved in the development of neuropathic pain after PNI by affecting neurons. However, whether leptin is involved in microglial activation leading to neuropathic pain after PCRA is unknown...
August 16, 2017: Life Sciences
https://www.readbyqxmd.com/read/28821396/the-new-hdac1-inhibitor-lg325-ameliorates-neuropathic-pain-in-a-mouse-model
#4
Maria Domenica Sanna, Luca Guandalini, Maria Novella Romanelli, Nicoletta Galeotti
Current analgesic therapies for treatment of neuropathic pain are unsatisfactory. Neuropathic pain is, therefore, undertreated and there is a significant need for a better pharmacotherapy. Increasing evidence indicate that histone deacetylation is a critical step in nerve injury pain. To obtain an innovative treatment for the management of neuropathic pain, we investigated the pharmacological effects produced by the new histone deacetylase (HDAC)-1 selective inhibitor, LG325, in a mouse model of trauma-induced peripheral mononeuropathy provoked by spared nerve injury (SNI)...
August 15, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28819738/high-dose-8-capsaicin-patch-in-treatment-of-chemotherapy-induced-peripheral-neuropathy-single-center-experience
#5
Iwona Filipczak-Bryniarska, Roger M Krzyzewski, Jakub Kucharz, Anna Michalowska-Kaczmarczyk, Justyna Kleja, Jarosław Woron, Katarzyna Strzepek, Lucyna Kazior, Jerzy Wordliczek, Tomasz Grodzicki, Krzysztof Krzemieniecki
High-dose capsaicin patch is effective in treatment of neuropathic pain in HIV-associated neuropathy and diabetic neuropathy. There are no studies assessing effectiveness of high-dose capsaicin patch in treatment of chemotherapy-induced peripheral neuropathy. We sought to determine the effectiveness of treatment of pain associated with chemotherapy-induced peripheral neuropathy with high-dose capsaicin patch. Our study group consisted of 18 patients with clinically confirmed oxaliplatin-induced neuropathy. Baseline characteristic including underling disease, received cumulative dose of neurotoxic agent, neuropathic symptoms, prior treatment and initial pain level were recorded...
August 17, 2017: Medical Oncology
https://www.readbyqxmd.com/read/28819330/synthesis-and-investigation-of-mixed-%C3%AE-opioid-and-%C3%AE-opioid-agonists-as-possible-bivalent-ligands-for-treatment-of-pain
#6
Ruben S Vardanyan, James P Cain, Saghar Mowlazadeh Haghighi, Vlad K Kumirov, Mary I McIntosh, Alexander J Sandweiss, Frank Porreca, Victor J Hruby
Several studies have suggested functional association between μ-opioid and δ-opioid receptors and showed that μ-activity could be modulated by δ-ligands. The general conclusion is that agonists for the δ-receptor can enhance the analgesic potency and efficacy of μ-agonists. Our preliminary investigations demonstrate that new bivalent ligands constructed from the μ-agonist fentanyl and the δ-agonist enkephalin-like peptides are promising entities for creation of new analgesics with reduced side effects for treatment of neuropathic pain...
March 2017: Journal of Heterocyclic Chemistry
https://www.readbyqxmd.com/read/28816708/single-incision-approach-to-implantation-of-the-pulse-generator-and-leads-for-dorsal-root-ganglion-stimulation-a-case-report
#7
Valery van Velsen, Noud van Helmond, Mitchell E Levine, Kenneth B Chapman
Dorsal root ganglion (DRG) stimulation has recently emerged as a treatment for persistent neuropathic pain, but the permanent implantation of stimulator leads and the pulse generator can be difficult and is sometimes associated with complications. We used a single-incision approach to tunnel and implant the leads and pulse generator for DRG stimulation treatment in a patient suffering from intractable foot pain. At long-term follow-up, the patient experienced a decrease in pain intensity and improvement in function, without any complications...
August 14, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28816231/molecular-mechanisms-of-the-analgesic-action-of-wu-tou-decoction-on-neuropathic-pain-in-mice-revealed-using-microarray-and-network-analysis
#8
Yan-Qiong Zhang, Chao Wang, Qiu-Yan Guo, Chun-Yan Zhu, Chen Yan, Dan-Ni Sun, Qiong-Hong Xu, Na Lin
Wu-tou Decoction (WTD) is a classic herbal formula in traditional Chinese medicine for the treatment of joint diseases, neuropathic pain (NP) and inflammatory pain. In this study we investigated whether WTD produced analgesic action in a mouse spinal nerve ligation (SNL) model and elucidated the underlying molecular mechanisms. Mice were subjected to SNL and orally treated with WTD (3.15, 6.30 or 12.60 g·kg(-1)·d(-1)) for 21 d. SNL induced mechanical hyperalgesia and heat hyperalgesia characterized by rapid and persistent pain hypersensitivity...
August 17, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28815639/safety-tolerability-and-pharmacokinetic-characteristics-of%C3%A2-a-novel-nonopioid-analgesic-vvz-149-injections-in-healthy-volunteers-a-first-in-class-first-in-human-study
#9
Jaeseong Oh, SeungHwan Lee, Anhye Kim, Jangsoo Yoon, Kyungho Jang, Doo H Lee, Sunyoung Cho, Sang Rim Lee, Kyung-Sang Yu, Jae-Yong Chung
VVZ-149, a dual antagonist of GlyT2 and 5HT2 A receptors, is an investigational analgesic with a novel mechanism of action that is currently under early-stage clinical development as an injectable agent for the treatment of postoperative pain. Here, the safety, tolerability, and pharmacokinetics of VVZ-149 injections in healthy male volunteers were explored in a randomized, double-blind, single- and multiple-ascending-dose (SAD and MAD, respectively), placebo-controlled clinical study. Subjects randomly received a 4-hour intravenous infusion of 0...
August 16, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28810599/effects-of-niflumic-acid-on-%C3%AE-aminobutyric-acid-induced-currents-in-isolated-dorsal-root-ganglion-neurons-of-neuropathic-pain-rats
#10
Li-Jie Wang, Yang Wang, Meng-Jie Chen, Zhen-Pu Tian, Bi-Han Lu, Ke-Tao Mao, Liang Zhang, Lei Zhao, Li-Ya Shan, Li Li, Jun-Qiang Si
Niflumic acid (NFA) is a type of non-steroidal anti-inflammatory drug. Neuropathic pain is caused by a decrease in presynaptic inhibition mediated by γ-aminobutyric acid (GABA). In the present study, a whole-cell patch-clamp technique and intracellular recording were used to assess the effect of NFA on GABA-induced inward current in dorsal root ganglion (DRG) neurons of a chronic constriction injury (CCI) model. It was observed that 1-1,000 µmol/l GABA induced a concentration-dependent inward current in DRG neurons...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28809936/benefits-and-safety-of-gabapentinoids-in-chronic-low-back-pain-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#11
Harsha Shanthanna, Ian Gilron, Manikandan Rajarathinam, Rizq AlAmri, Sriganesh Kamath, Lehana Thabane, Philip J Devereaux, Mohit Bhandari
BACKGROUND AND OBJECTIVE: Chronic Low Back Pain (CLBP) is very common, with a lifetime prevalence between 51% and 80%. In majority, it is nonspecific in nature and multifactorial in etiology. Pregabalin (PG) and Gabapentin (GB) are gabapentinoids that have demonstrated benefit in neuropathic pain conditions. Despite no clear rationale, they are increasingly used for nonspecific CLBP. They necessitate prolonged use and are associated with adverse effects and increased cost. Recent guidelines from the National Health Service (NHS), England, expressed concerns on their off-label use, in addition to the risk of misuse...
August 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28809075/allosteric-modulation-of-%C3%AE-4%C3%AE-2-nicotinic-acetylcholine-receptors-desformylflustrabromine-potentiates-antiallodynic-response-of-nicotine-in-a-mouse-model-of-neuropathic-pain
#12
D Bagdas, D Ergun, A Jackson, W Toma, M K Schulte, M I Damaj
BACKGROUND: Neuronal nicotinic acetylcholine receptors (nAChRs) are ligand-gated ion channels. The α4β2 subtype of nAChRs plays an important role in the mediation of pain and several nicotine-evoked responses. Agonists and partial agonists of α4β2 nAChRs show efficacy in animal pain models. In addition, the antinociceptive properties of nicotine, a non-selective nAChR agonist with a high affinity for α4β2 nAChRs, is well-known. There is a growing body of evidence pointing to allosteric modulation of nAChRs as an alternative treatment strategy in experimental pain...
August 14, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28807894/advances-in-the-diagnosis-and-management-of-neck-pain
#13
REVIEW
Steven P Cohen, W Michael Hooten
Neck pain imposes a considerable personal and socioeconomic burden-it is one of the top five chronic pain conditions in terms of prevalence and years lost to disability-yet it receives a fraction of the research funding given to low back pain. Although most acute episodes resolve spontaneously, more than a third of affected people still have low grade symptoms or recurrences more than one year later, with genetics and psychosocial factors being risk factors for persistence. Nearly half of people with chronic neck pain have mixed neuropathic-nociceptive symptoms or predominantly neuropathic symptoms...
August 14, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28806817/the-effects-of-cannabis-among-adults-with-chronic-pain-and-an-overview-of-general-harms-a-systematic-review
#14
Shannon M Nugent, Benjamin J Morasco, Maya E O'Neil, Michele Freeman, Allison Low, Karli Kondo, Camille Elven, Bernadette Zakher, Makalapua Motu'apuaka, Robin Paynter, Devan Kansagara
Background: Cannabis is increasingly available for the treatment of chronic pain, yet its efficacy remains uncertain. Purpose: To review the benefits of plant-based cannabis preparations for treating chronic pain in adults and the harms of cannabis use in chronic pain and general adult populations. Data Sources: MEDLINE, Cochrane Database of Systematic Reviews, and several other sources from database inception to March 2017. Study Selection: Intervention trials and observational studies, published in English, involving adults using plant-based cannabis preparations that reported pain, quality of life, or adverse effect outcomes...
August 15, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28806211/the-opiorphin-analog-str-324-decreases-sensory-hypersensitivity-in-a-rat-model-of-neuropathic-pain
#15
Alain Van Elstraete, Philippe Sitbon, Leila Hamdi, Victor Juarez-Perez, Jean-Xavier Mazoit, Dan Benhamou, Catherine Rougeot
BACKGROUND: Neuropathic pain represents a therapeutic challenge, and treatments with increased efficacy and tolerability still need to be developed. Opiorphin protects endogenous enkephalins from degradation, potentiating enkephalin-dependent analgesia via the activation of opioid pathways. Enkephalins are natural ligands of opioid receptors, with strong affinity for δ-opioid receptors. Expression of functional δ-opioid receptors increases in sensory neurons after peripheral nerve injury in neuropathic pain models...
August 10, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28802882/chronic-opioid-therapy-modifies-qst-changes-following-ketamine-infusion-in-chronic-pain-patients
#16
Dermot P Maher, Yi Zhang, Shihab Ahmed, Tina Doshi, Charlene Malarick, Kristin Stabach, Jianren Mao, Lucy Chen
The long-term effects of opioids on sensitization processes are believed to be mediated through the NDMA receptor. QST changes observed following a ketamine infusion have been previously described but the effect that chronic opioids will have is not known. The results of this prospective randomized factorial trial compared the thermal QST changes observed following a 0.05 mg/kg ketamine infusion or a saline placebo in chronic pain subjects who were either opioid-naïve or were chronically using opioids for chronic non-cancer pain are presented...
August 9, 2017: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28802070/memantine-for-the-treatment-of-general-neuropathic-pain-a-narrative-review
#17
REVIEW
Gisèle Pickering, Véronique Morel
Neuropathic pain (NP) is difficult to treat and is associated with a decline in quality of life. NP aetiologies are numerous and a number of pathologies display neuropathic characteristics. Of the various N-Methyl-D-Aspartate antagonists that are alternatives to recommended in first-line NP treatment, memantine has the safest side-effect profile and has long been approved in Alzheimer's disease. The review covers memantine studies in post-herpetic neuralgia, diabetic pain, postoperative pain, complex regional pain syndrome, chronic phantom limb pain, opioid refractory pain, and fibromyalgia...
August 12, 2017: Fundamental & Clinical Pharmacology
https://www.readbyqxmd.com/read/28801619/repetitive-motor-cortex-stimulation-reinforces-the-pain-modulation-circuits-of-peripheral-neuropathic-pain
#18
Myeounghoon Cha, Sun Woo Um, Minjee Kwon, Taick Sang Nam, Bae Hwan Lee
Recent evidence indicates that motor cortex stimulation (MCS) is a potentially effective treatment for chronic neuropathic pain. However, the neural mechanisms underlying the attenuated hyperalgesia after MCS are not completely understood. In this study, we investigated the neural mechanism of the effects of MCS using an animal model of neuropathic pain. After 10 daily sessions of MCS, repetitive MCS reduced mechanical allodynia and contributed to neuronal changes in the anterior cingulate cortex (ACC). Interestingly, inhibition of protein kinase M zeta (PKMζ), a regulator of synaptic plasticity, in the ACC blocked the effects of repetitive MCS...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28800712/outcomes-achieved-with-use-of-a-prefabricated-roll-on-total-contact-cast
#19
Jonathan F Arnold, Valerie Marmolejo
BACKGROUND: The total contact cast (TCC) is considered the gold standard for offloading of plantar diabetic foot ulcerations, yet its use remains suboptimal for a variety of reasons. Prefabricated TCC systems have been developed to help enhance TCC use. The primary objective of this study was to determine if healing rates obtained with use of a prefabricated roll-on TCC were similar to those reported with conventional TCC use. Secondary outcomes measured were the incidence of iatrogenic ulceration, amputation, and recurrent ulceration, and patient tolerance of the device...
August 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28797868/neuropathic-pain-and-nerve-growth-factor-in-chemotherapy-induced-peripheral-neuropathy-prospective-clinical-pathological-study
#20
R Velasco, X Navarro, M Gil-Gil, M Herrando-Grabulosa, A Calls, J Bruna
CONTEXT: Neuropathic pain can be present in patients developing chemotherapy-induced peripheral neuropathy (CIPN). Nerve growth factor (NGF) is trophic to small sensory fibers and regulates nociception. OBJECTIVES: We investigated the changes in serum NGF and intraepidermal nerve fiber density (IENFD) in skin biopsies of cancer patients receiving neurotoxic chemotherapy in a single-center prospective observational study. METHODS: Patients were evaluated before and after chemotherapy administration...
August 7, 2017: Journal of Pain and Symptom Management
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