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https://www.readbyqxmd.com/read/28342818/intraneural-microcystic-lymphatic-malformation-of-the-ulnar-nerve-at-the-guyon-canal-unusual-cause-of-ulnar-pain-in-a-child
#1
I González Pérez, F Corella Montoya, I Casado Fariñas
We present a case of an unusual cause of ulnar pain on a 9 years old patient. The patient had pain on the ulnar side of the wrist after a fall. MRI showed a poorly defined lesion on the ulnar nerve at Guyońs canal. The initial diagnosis was traumatic neuropathy. Following conservative treatment of symptoms for one year, the pain started again. Therefore, a new MRI was performed were progression of the lesion was observed. Excision of the lesion was performed and the specimen sent for pathologic analysis. The diagnosis was of microcystic lymphatic malformation...
March 22, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28339448/efficacious-dorsal-root-ganglion-stimulation-for-painful-small-fiber-neuropathy-a-case-report
#2
Paolo Maino, Eva Koetsier, Alain Kaelin-Lang, Claudio Gobbi, Roberto Perez
Small fiber neuropathy is a disorder of the peripheral nerves with typical symptoms of burning, sharp, and shooting pain and sensory disturbances in the feet. Pain treatment depends principally on the underlying etiology with concurrent administration of antidepressants, anticonvulsants, opioids, and topical treatments like capsaicin and local anesthetics. However, treatments for pain relief in these patients frequently fail. We describe the first case of intractable painful small fiber neuropathy of the foot successfully treated with spinal cord stimulation of the left L5 dorsal root ganglion...
March 2017: Pain Physician
https://www.readbyqxmd.com/read/28339446/pulsed-radiofrequency-ablation-of-pudendal-nerve-for-treatment-of-a-case-of-refractory-pelvic-pain
#3
Vadim Petrov-Kondratov, Avneesh Chhabra, Stephanie Jones
Pudendal neuralgia (PN) is a result of pudendal nerve entrapment or injury, also called "Alcock syndrome." Pain that develops is often chronic, and at times debilitating. If conservative measures fail, invasive treatment modalities can be considered. The goal of this case report is to add to a small body of literature that a pulsed radiofrequency (PRF) ablation can be effectively used to treat PN and to show that high resolution MR neurography imaging can be used to detect pudendal neuropathy. CASE PRESENTATION: We present a case of a 51-year-old woman with 5 years of worsening right groin and vulva pain...
March 2017: Pain Physician
https://www.readbyqxmd.com/read/28337574/the-rs504393-influences-the-level-of-nociceptive-factors-and-enhances-opioid-analgesic-potency-in-neuropathic-rats
#4
Klaudia Kwiatkowski, Anna Piotrowska, Ewelina Rojewska, Wioletta Makuch, Joanna Mika
Increasing evidence has indicated that activated glial cells releasing nociceptive factors, such as interleukins and chemokines, are of key importance for neuropathic pain. Significant changes in the production of nociceptive factors are associated with the low effectiveness of opioids in neuropathic pain. Recently, it has been suggested that CCL2/CCR2 signaling is important for nociception. Here, we studied the time course changes in the mRNA/protein level of CD40/Iba-1, CCL2 and CCR2 in the spinal cord/dorsal root ganglia (DRG) in rats following chronic constriction injury (CCI) of the sciatic nerve...
March 23, 2017: Journal of Neuroimmune Pharmacology: the Official Journal of the Society on NeuroImmune Pharmacology
https://www.readbyqxmd.com/read/28337002/a-case-series-of-trigeminal-nerve-injuries-caused-by-periapical-lesions-of-mandibular-teeth
#5
M Devine, Z Yilmaz, M Hirani, T Renton
Aims Periapical lesions have been implicated in mandibular trigeminal sensory neuropathy. This study aimed to report on a case series of consecutive patients presenting with mandibular division trigeminal nerve injuries (TNI) caused by periapical lesions. Common presenting characteristics and possible strategies for management were also investigated.Materials and methods A retrospective study of 22 patients with TNI caused by periapical lesions. Data were extracted from patient records and analysed using Microsoft Excel and SPSS...
March 24, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28334999/rewiring-the-primary-somatosensory-cortex-in-carpal-tunnel-syndrome-with-acupuncture
#6
Yumi Maeda, Hyungjun Kim, Norman Kettner, Jieun Kim, Stephen Cina, Cristina Malatesta, Jessica Gerber, Claire McManus, Rebecca Ong-Sutherland, Pia Mezzacappa, Alexandra Libby, Ishtiaq Mawla, Leslie R Morse, Ted J Kaptchuk, Joseph Audette, Vitaly Napadow
Carpal tunnel syndrome is the most common entrapment neuropathy, affecting the median nerve at the wrist. Acupuncture is a minimally-invasive and conservative therapeutic option, and while rooted in a complex practice ritual, acupuncture overlaps significantly with many conventional peripherally-focused neuromodulatory therapies. However, the neurophysiological mechanisms by which acupuncture impacts accepted subjective/psychological and objective/physiological outcomes are not well understood. Eligible patients (n = 80, 65 female, age: 49...
March 2, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28334605/new-horizons-in-diabetic-neuropathy-mechanisms-bioenergetics-and-pain
#7
REVIEW
Eva L Feldman, Klaus-Armin Nave, Troels S Jensen, David L H Bennett
Pre-diabetes and diabetes are a global epidemic, and the associated neuropathic complications create a substantial burden on both the afflicted patients and society as a whole. Given the enormity of the problem and the lack of effective therapies, there is a pressing need to understand the mechanisms underlying diabetic neuropathy (DN). In this review, we present the structural components of the peripheral nervous system that underlie its susceptibility to metabolic insults and then discuss the pathways that contribute to peripheral nerve injury in DN...
March 22, 2017: Neuron
https://www.readbyqxmd.com/read/28332600/calmodulin-is-responsible-for-ca-2-dependent-regulation-of-trpa1-channels
#8
Raquibul Hasan, Alasdair T S Leeson-Payne, Jonathan H Jaggar, Xuming Zhang
TRPA1 is a Ca(2+)-permeable ion channel involved in many sensory disorders such as pain, itch and neuropathy. Notably, the function of TRPA1 depends on Ca(2+), with low Ca(2+) potentiating and high Ca(2+) inactivating TRPA1. However, it remains unknown how Ca(2+) exerts such contrasting effects. Here, we show that Ca(2+) regulates TRPA1 through calmodulin, which binds to TRPA1 in a Ca(2+)-dependent manner. Calmodulin binding enhanced TRPA1 sensitivity and Ca(2+)-evoked potentiation of TRPA1 at low Ca(2+), but inhibited TRPA1 sensitivity and promoted TRPA1 desensitization at high Ca(2+)...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28332005/levetiracetam-synergizes-with-gabapentin-pregabalin-duloxetine-and-selected-antioxidants-in-a-mouse-diabetic-painful-neuropathy-model
#9
Radica Stepanović-Petrović, Ana Micov, Maja Tomić, Uroš Pecikoza
RATIONALE: We have reported that levetiracetam, a novel anticonvulsant with analgesic properties, synergizes with ibuprofen/aspirin/paracetamol in a model of diabetic painful neuropathy (DPN). Most guidelines recommend gabapentin, pregabalin, and duloxetine as first- or second-line agents for DPN. OBJECTIVE: We examined the effects of combination treatment of first-/second-line analgesics with levetiracetam in a model of DPN. Additionally, the levetiracetam's combinations with antioxidants, low dose of aspirin, coenzyme Q10, or α-lipoic acid were evaluated...
March 22, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28330489/profiling-intraoral-neuropathic-disturbances-following-lingual-nerve-injury-and-in-burning-mouth-syndrome
#10
Amely Hartmann, Robin Seeberger, Malte Bittner, Roman Rolke, Claudia Welte-Jzyk, Monika Daubländer
BACKGROUND: The aim of the study was to analyse intraoral neurophysiological changes in patients with unilateral lingual nerve lesions as well as patients with Burning Mouth Syndrome (BMS) by applying a standardized Quantitative Sensory Testing (QST) protocol. METHODS: The study included patients suffering from a peripheral lesion of the lingual nerve (n = 4), from BMS (n = 5) and healthy controls (n = 8). Neurophysiological tests were performed in the innervation areas of the tongue bilaterally...
March 23, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28328138/homozygous-mutation-in-ptrh2-gene-causes-progressive-sensorineural-deafness-and-peripheral-neuropathy
#11
Rajech Sharkia, Stavit A Shalev, Abdelnaser Zalan, Milit Marom-David, Nathan Watemberg, Jill E Urquhart, Sarah B Daly, Sanjeev S Bhaskar, Simon G Williams, William G Newman, Ronen Spiegel, Abdussalam Azem, Orly Elpeleg, Muhammad Mahajnah
PTRH2 is an evolutionarily highly conserved mitochondrial protein that belongs to a family of peptidyl-tRNA hydrolases. Recently, patients from two consanguineous families with mutations in the PTRH2 gene were reported. Global developmental delay associated with microcephaly, growth retardation, progressive ataxia, distal muscle weakness with ankle contractures, demyelinating sensorimotor neuropathy, and sensorineural hearing loss were present in all patients, while facial dysmorphism with widely spaced eyes, exotropia, thin upper lip, proximally placed thumbs, and deformities of the fingers and toes were present in some individuals...
April 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28328124/exome-sequencing-identifies-novel-ntrk1-mutations-in-patients-with-hsan-iv-phenotype
#12
Ruqaiah Altassan, Haya Al Saud, Tariq Ahmad Masoodi, Haya Al Dosssari, Ola Khalifa, Hamad Al-Zaidan, Nadia Sakati, Zuhair Rhabeeni, Zuhair Al-Hassnan, Yousef Binamer, Nadia Alhashemi, William Wade, Zayed Al-Zayed, Moeen Al-Sayed, Mohamed A Al-Muhaizea, Brian Meyer, Mohammad Al-Owain, Salma M Wakil
Hereditary sensory autonomic neuropathy type IV (HSAN-IV) is a rare autosomal recessive disorder that usually begins in infancy and is characterized by anhidrosis, insensitivity to noxious stimuli leading to self-mutilating behavior, and intellectual disability. HSAN-IV is caused by mutations in the neurotrophic tyrosine kinase receptor type 1 gene, NTRK1, encoding the high-affinity receptor of nerve growth factor (NGF) which maps to chromosome 1q21-q22. Patients with HSAN-IV lack all NGF-dependent neurons, the primary afferents and sympathetic postganglionic neurons leading to lack of pain sensation and the presence of anhidrosis, respectively...
April 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28324204/tibial-nerve-neuropathy-following-medial-opening-wedge-high-tibial-osteotomy-case-report-of-a-rare-technical-complication
#13
Young-Soo Shin, Hyun-Bo Sim, Jung-Ro Yoon
A 63-year-old woman developed tibial nerve injury caused by an overlong K wire and 4.5-mm cortical lag screw through the first distal hole below the osteotomy during medial opening-wedge high tibial osteotomy (HTO), leading to a lack of sensation on the sole of the foot with no disturbances in motor functions. The temporary lag screw in the first distal hole below the osteotomy is often inserted by an excessive length in order to compress the potentially fractured opposite cortex. By doing so, posterior neurovascular structures including the tibial nerve and the popliteal vessels can be injured...
March 21, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28323403/discovery-of-potent-antiallodynic-agents-for-neuropathic-pain-targeting-p2x3-receptors
#14
Young-Hwan Jung, Yong-Chul Kim, Yeo Ok Kim, Hai Lin, Joong-Heui Cho, Jin-Hee Park, So-Deok Lee, Jinsu Bae, Koon Mook Kang, Yoon Gyoon Kim, Ae Nim Pae, Hyojin Ko, Chul-Seung Park, Myung Ha Yoon
Antagonism of the P2X3 receptor is one of the potential therapeutic strategies for the management of neuropathic pain because P2X3 receptors are predominantly localized on small to medium diameter C- and Aδ-fiber primary afferent neurons, which are related to the pain-sensing system. In this study, 5-hydroxy pyridine derivatives were designed, synthesized, and evaluated for their in vitro biological activities by two-electrode voltage clamp assay at hP2X3 receptors. Among the novel hP2X3 receptor antagonists, intrathecal treatment of compound 29 showed parallel efficacy with pregabalin (calcium channel modulator) and higher efficacy than AF353 (P2X3 receptor antagonist) in the evaluation of its antiallodynic effects in spinal nerve ligation rats...
March 21, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28321515/isolated-optic-neuritis-associated-with-mycoplasma-pneumoniae-infection-report-of-two-cases-and-literature-review
#15
Seo-Young Choi, You-Jin Choi, Jae-Hwan Choi, Kwang-Dong Choi
Mycoplasma pneumonia is a major pathogen of primary atypical pneumonia and has been known to cause various kinds of extrapulmonary manifestations involving almost all organs of the human body. Optic neuritis associated with M. pneumoniae infection has rarely been described and mostly, it combined other neurological complications including meningitis, meningoencephalitis, myelitis, and peripheral neuropathy. We report two patients who presented with isolated optic neuritis due to M. pneumoniae infection, and reviewed the literatures on five additional patients...
March 20, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28318820/sarcoidosis-associated-small-fiber-neuropathy-in-a-large-cohort-clinical-aspects-and-response-to-ivig-and-anti-tnf-alpha-treatment
#16
Jinny O Tavee, Karen Karwa, Zubair Ahmed, Nicolas Thompson, Joseph Parambil, Daniel A Culver
OBJECTIVE: Small fiber neuropathy commonly affects patients with sarcoidosis and is often refractory to standard immunosuppressive therapies used for systemic disease. The clinical features of sarcoidosis-associated small fiber neuropathy (SSFN) and its response to medical therapy have not been described in a large population. METHODS: We performed a retrospective review of patients with SSFN seen at the Cleveland Clinic over a 4-year period. RESULTS: SSFN was identified in 143 individuals although other causes of neuropathy were found in 28 cases...
March 9, 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28315678/protective-effect-of-co-administration-of-curcumin-and-sildenafil-in-alcohol-induced-neuropathy-in-rats
#17
Maninder Kaur, Amarjeet Singh, Bimlesh Kumar, Sachin Kumar Singh, Amit Bhatia, Monica Gulati, T Prakash, Palak Bawa, Adil Hussain Malik
Neuropathic pain associated with chronic alcohol consumption is a medico-socioeconomical problem that affects both central and peripheral nervous system and has no satisfactory treatment till date. The present study was designed to investigate the protective effect of co-administration of curcumin and sildenafil on alcohol induced neuropathic pain in rats. In order to carry out this, ethanol (35% v/v, 10g/kg, p.o.) was administered for 10 weeks to induce neuropathic pain. Curcumin (30 and 60mg/kg, i.p.) and sildenafil (5 and 10mg/kg, i...
March 16, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28306568/ketamine-for-cancer-pain-what-is-the-evidence
#18
Kelly Jonkman, Tine van de Donk, Albert Dahan
PURPOSE OF REVIEW: In this review, we assess the benefit of ketamine in the treatment of terminal cancer pain that is refractory to opioid treatment and/or complicated by neuropathy. RECENT FINDINGS: While randomized controlled trials consistently show lack of clinical efficacy of ketamine in treating cancer pain, a large number of open-label studies and case series show benefit. SUMMARY: Ketamine is an N-methyl-D-aspartate receptor antagonist that at low-dose has effective analgesic properties...
March 16, 2017: Current Opinion in Supportive and Palliative Care
https://www.readbyqxmd.com/read/28301890/kasuistik-late-onset-small-fiber-neuropathie-nach-kritischer-erkrankung
#19
Susanne Koch, Rabih Moshourab, Tobias Wollersheim, Claudia Spies, Thomas Fritzsche, Steffen Weber-Carstens
A 42-year-old patient presented with acute allodynia and hyperalgesia in her distal limbs, most severe in the innervation area of the ulnar nerve. The patient developed critical illness myopathy/polyneuropathy after septic shock 5 months prior to her presentation. After exclusion of differential diagnosis, "late onset small fiber neuropathy" after critical illness was diagnosed. Recent studies showed small fiber lesions during critical illness and in follow-up exams, where additionally neuropathic pain were proved...
March 2017: Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie: AINS
https://www.readbyqxmd.com/read/28299433/mri-guided-cryoablation-of-the-posterior-femoral-cutaneous-nerve-for-the-treatment-of-neuropathy-mediated-sitting-pain
#20
Dharmdev H Joshi, Gaurav K Thawait, Filippo Del Grande, Jan Fritz
Neuropathy of the posterior femoral cutaneous nerve may manifest as pain and paresthesia in the skin over the inferior buttocks, posterior thigh, and popliteal region. Current treatment options include physical and oral pain therapy, perineural injections, and surgical neurectomy. Perineural steroid injections may provide short-term pain relief; however, to our knowledge, there is currently no minimally invasive denervation procedure for sustained pain relief that could serve as an alternative to surgical neurectomy...
March 15, 2017: Skeletal Radiology
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