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Sciatic neuropathy

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https://www.readbyqxmd.com/read/28634514/cystic-lesions-of-peripheral-nerves-are-we-missing-the-diagnosis-of-the-intraneural-ganglion-cyst
#1
Jyoti Panwar, Anil Mathew, Binu P Thomas
AIM: To highlight the salient magnetic resonance imaging (MRI) features of the intraneural ganglion cyst (INGC) of various peripheral nerves for their precise diagnosis and to differentiate them from other intra and extra-neural cystic lesions. METHODS: A retrospective analysis of the magnetic resonance (MR) images of a cohort of 245 patients presenting with nerve palsy involving different peripheral nerves was done. MR images were analyzed for the presence of a nerve lesion, and if found, it was further characterized as solid or cystic...
May 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28620719/large-coverage-mr-neurography-in-cidp-diagnostic-accuracy-and-electrophysiological-correlation
#2
Moritz Kronlage, Philipp Bäumer, Kalliopi Pitarokoili, Daniel Schwarz, Véronique Schwehr, Tim Godel, Sabine Heiland, Ralf Gold, Martin Bendszus, Min-Suk Yoon
The objective of this study was to evaluate large coverage magnetic resonance neurography (MRN) in chronic inflammatory demyelinating polyneuropathy (CIDP). In this prospective study, 18 patients with CIDP and 18 healthy controls were examined by a standardized MRN protocol at 3 T. Lumbosacral plexus was imaged by a T2-weighted 3D sequence and peripheral nerves of the upper and lower extremity by axial T2-weighted turbo spin-echo sequences. Lesions were characterized by nerve cross-sectional area (CSA) and T2-weighted signal (nT2)...
June 15, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28612270/post-surgical-focal-inflammatory-neuropathy-of-the-sciatic-nerve
#3
Ahmet Çetiz
No abstract text is available yet for this article.
June 13, 2017: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/28611388/aberrant-plasticity-of-peripheral-sensory-axons-in-a-painful-neuropathy
#4
Takashi Hirai, Yatendra Mulpuri, Yanbing Cheng, Zheng Xia, Wei Li, Supanigar Ruangsri, Igor Spigelman, Ichiro Nishimura
Neuronal cells express considerable plasticity responding to environmental cues, in part, through subcellular mRNA regulation. Here we report on the extensive changes in distribution of mRNAs in the cell body and axon compartments of peripheral sensory neurons and the 3' untranslated region (3'UTR) landscapes after unilateral sciatic nerve entrapment (SNE) injury in rats. Neuronal cells dissociated from SNE-injured and contralateral L4 and L5 dorsal root ganglia were cultured in a compartmentalized system. Axonal and cell body RNA samples were separately subjected to high throughput RNA sequencing (RNA-Seq)...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28601289/anti-inflammatory-and-immunomodulatory-potential-of-human-immunoglobulin-applied-intrathecally-in-lewis-rat-experimental-autoimmune-neuritis
#5
Kalliopi Pitarokoili, Felix Kohle, Jeremias Motte, Oluwaseun Fatoba, Xiomara Pedreiturria, Ralf Gold, Min-Suk Yoon
Intravenous human immunoglobulins dominate in the treatment of autoimmune neuropathies. We introduce intrathecal application as a new option for experimental autoimmune neuritis in Lewis rats. After immunisation with neuritogenic P2 peptide, we show a therapeutic and preventive effect of intrathecal human immunoglobulins (5-40mg/kg) on clinical and electrophysiological neuritis signs. Histology corroborated a lower degree of inflammation, demyelination, ICAM-1-dependent blood-nerve-barrier permeability and complement activation in the sciatic nerve...
August 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28574858/diffusion-tensor-imaging-in-chronic-inflammatory-demyelinating-polyneuropathy-diagnostic-accuracy-and-correlation-with-electrophysiology
#6
Moritz Kronlage, Kalliopi Pitarokoili, Daniel Schwarz, Tim Godel, Sabine Heiland, Min-Suk Yoon, Martin Bendszus, Philipp Bäumer
PURPOSE: The aims of this study were to assess diagnostic accuracy of diffusion tensor imaging (DTI) in chronic inflammatory demyelinating polyneuropathy (CIDP), to correlate DTI with electrophysiological parameters, and to evaluate whether radial diffusivity (RD) and axial diffusivity (AD) might serve as specific biomarkers of demyelinating and axonal pathology. MATERIALS AND METHODS: This prospective study was approved by the institutional ethics committee, and written informed consent was obtained from all participants...
June 1, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28573049/biphalin-a-dimeric-enkephalin-alleviates-lps-induced-activation-in-rat-primary-microglial-cultures-in-opioid-receptor-dependent-and-receptor-independent-manners
#7
Katarzyna Popiolek-Barczyk, Anna Piotrowska, Wioletta Makuch, Joanna Mika
Neuropathic pain is relatively less responsive to opioids than other types of pain, which is possibly due to a disrupted opioid system partially caused by the profound microglial cell activation that underlines neuroinflammation. We demonstrated that intrathecally injected biphalin, a dimeric enkephalin analog, diminished symptoms of neuropathy in a preclinical model of neuropathic pain in rats (CCI, chronic constriction injury of the sciatic nerve) at day 12 postinjury. Using primary microglial cell cultures, we revealed that biphalin did not influence cell viability but diminished NO production and expression of Iba1 in LPS-stimulated cells...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/28528294/isoliquiritigenin-reduces-oxidative-damage-and-alleviates-mitochondrial-impairment-by-sirt1-activation-in-experimental-diabetic-neuropathy
#8
Veera Ganesh Yerra, Anil Kumar Kalvala, Ashutosh Kumar
Sirtuin (SIRT1) inactivation underlies the pathogenesis of insulin resistance and hyperglycaemia-associated vascular complications, but its role in diabetic neuropathy (DN) has not been yet explored. We have evaluated hyperglycaemia-induced alteration of SIRT1 signalling and the effect of isoliquiritigenin (ILQ) on SIRT1-directed AMP kinase (AMPK) and peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α) signalling in peripheral nerves of streptozotocin (STZ) (55 mg/kg, ip)-induced diabetic rats and in high glucose (30 mM)-exposed neuro2a (N2A) cells...
May 11, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28505604/nrf2-and-nf-%C3%AE%C2%BAb-modulation-by-plumbagin-attenuates-functional-behavioural-and-biochemical-deficits-in-rat-model-of-neuropathic-pain
#9
Vijay Arruri, Prashanth Komirishetty, Aparna Areti, Siva Kumar Naik Dungavath, Ashutosh Kumar
BACKGROUND: Plumbagin is known to exhibit a broad range of biological activities including anti-cancer, antimicrobial and has been widely used traditionally. Nuclear factor kappa-light-chain-enhancer of activated B-cells (NF-κB) inhibitory and Nuclear factor (erythroid derived-2) like-2 (Nrf2) modulatory activities of Plumbagin have been reported already. In nerve injury model of neuropathy in rats, the role of NF-κB upregulation and declined antioxidant defence has been well recognized...
February 27, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28500667/magnetic-resonance-neurography-and-diffusion-tensor-imaging-of-the-peripheral-nerves-in-patients-with-cmt-type-1a
#10
Michael Vaeggemose, Signe Vaeth, Mirko Pham, Steffen Ringgaard, Uffe B Jensen, Hatice Tankisi, Niels Ejskjaer, Sabine Heiland, Henning Andersen
INTRODUCTION: Investigation of peripheral neuropathies by magnetic resonance neurography (MRN) may provide increased diagnostic accuracy when performed in combination with diffusion tensor imaging (DTI). The aim of this study was to evaluate DTI in the detection of neuropathic abnormalities in Charcot-Marie-Tooth-type-1A (CMT1A). METHODS: MR imaging of the sciatic and tibial nerves, including MRN and DTI, was prospectively performed in 15 CMT1A patients and 30 healthy-controls (HC)...
May 13, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28467654/sterol-regulatory-element-binding-protein-1c-knockout-mice-show-altered-neuroactive-steroid-levels-in-sciatic-nerve
#11
Nico Mitro, Gaia Cermenati, Matteo Audano, Silvia Giatti, Marzia Pesaresi, Silvia Pedretti, Roberto Spezzano, Donatella Caruso, Roberto Cosimo Melcangi
Neuroactive steroid levels are altered in several experimental models of peripheral neuropathy, and on this basis, they have been proposed as protective agents. For the first time, the levels of these molecules were here assessed in sterol regulatory-binding protein-1c (SREBP-1c) knock-out (KO) male mice (i.e., an experimental model of peripheral neuropathy) and compared with observations in wild type animals. The levels of neuroactive steroids have been evaluated by liquid chromatography tandem mass spectrometry in plasma and sciatic nerve at two and ten months of age and these analyses were implemented analyzing the gene expression of crucial steroidogenic enzymes in sciatic nerve...
May 3, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28465077/spinal-activation-of-the-npy-y1-receptor-reduces-mechanical-and-cold-allodynia-in-rats-with-chronic-constriction-injury
#12
Mariana Malet, Candelaria Leiguarda, Guillermo Gastón, Carly McCarthy, Pablo Brumovsky
Neuropeptide tyrosine (NPY) and its associated receptors Y1R and Y2R have been previously implicated in the spinal modulation of neuropathic pain induced by total or partial sectioning of the sciatic nerve. However, their role in chronic constrictive injuries of the sciatic nerve has not yet been described. In the present study, we analyzed the consequences of pharmacological activation of spinal Y1R, by using the specific Y1R agonist Leu(31)Pro(34)-NPY, in rats with chronic constriction injury (CCI). CCI and sham-injury rats were implanted with a permanent intrathecal catheter (at day 7 after injury), and their response to the administration of different doses (2...
April 29, 2017: Peptides
https://www.readbyqxmd.com/read/28446186/fingolimod-attenuates-experimental-autoimmune-neuritis-and-contributes-to-schwann-cell-mediated-axonal-protection
#13
Björn Ambrosius, Kalliopi Pitarokoili, Lisa Schrewe, Xiomara Pedreiturria, Jeremias Motte, Ralf Gold
BACKGROUND: Fingolimod, a sphingosine-1-phosphate receptor modulator with well-described immunomodulatory properties involving peripheral immune cell trafficking, was the first oral agent approved for the treatment of relapsing remitting multiple sclerosis. Analogous immunomodulatory treatment options for chronic peripheral autoimmune neuropathies are lacking. METHODS: We tested fingolimod in the animal model of experimental autoimmune neuritis in Lewis rat. Six to eight-week-old female rats were immunized with P2 peptide and from this day on treated with fingolimod...
April 26, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28444825/3-tesla-magnetic-resonance-imaging-study-of-the-normal-canine-femoral-and-sciatic-nerves
#14
Christine Sievert, Henning Richter, Dominic Gascho, Patrick R Kircher, Inés Carrera
Understanding the normal course and optimizing visualization of the canine peripheral nerves of the lumbar plexus, in particular the sciatic and the femoral nerves, is essential when interpreting images of patients with suspected peripheral neuropathies such as inflammatory or neoplastic conditions. The purpose of this prospective, anatomic study was to describe the magnetic resonance imaging (MRI) anatomy of the normal canine femoral and sciatic nerves and to define the sequences in which the nerves are best depicted...
April 25, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28444094/jumping-in-aquatic-environment-after-sciatic-nerve-compression-nociceptive-evaluation-and-morphological-characteristics-of-the-soleus-muscle-of-wistar-rats
#15
Jéssica Aline Malanotte, Camila Mayumi Martin Kakihata, Jhenifer Karvat, Rose Meire Costa Brancalhão, Lucinéia de Fátima Chasko Ribeiro, Gladson Ricardo Flor Bertolini
Objective: To evaluate the effect of jumping in aquatic environment on nociception and in the soleus muscle of trained and not trained Wistar rats, in the treatment of compressive neuropathy of the sciatic nerve. Methods: Twenty-five Wistar rats were distributed into five groups: Control, Lesion, Trained + Lesion, Lesion + Exercise, and Trained + Lesion + Exercise. The training was jumping exercise in water environment for 20 days prior to injury, and treatment after the injury...
January 2017: Einstein
https://www.readbyqxmd.com/read/28432188/magnetic-resonance-neurography-visualizes-abnormalities-in-sciatic-and-tibial-nerves-in-patients-with-type-1-diabetes-and-neuropathy
#16
Michael Vaeggemose, Mirko Pham, Steffen Ringgaard, Hatice Tankisi, Niels Ejskjaer, Sabine Heiland, Per L Poulsen, Henning Andersen
This study evaluates whether diffusion-tensor-imaging MR-Neurography (DTI-MRN), T2-relaxation-time and proton-spin-density can detect and grade neuropathic abnormalities in patients with type 1 diabetes.Forty-nine patients with type 1 diabetes (11 with severe polyneuropathy (sDPN), 13 with mild polyneuropathy (mDPN) and 25 without polyneuropathy (nDPN)) and 30 healthy controls (HC) were included. Clinical examinations, nerve-conduction-studies and vibratory-perception-thresholds determined the presence and severity of DPN...
April 21, 2017: Diabetes
https://www.readbyqxmd.com/read/28429339/observational-multicentric-study-on-chronic-sciatic-pain-clinical-data-from-44-italian-centers
#17
G A Checchia, G Letizia Mauro, G Morico, A Oriente, C Lisi, V Polimeni, M Lucia, M Ranieri
OBJECTIVE: To provide information on the clinical presentation of sciatic neuropathy and its management in a real-world setting, and to analyze the effects of a multimodal approach based on the association of physical and pharmacological therapy. PATIENTS AND METHODS: A multicentric observational prospective study was conducted in 44 Italian tertiary centers specialized in Physical Medicine and Rehabilitation, Orthopedics, Neurology, Neurosurgery, and Rheumatology...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28391556/microtubule-targeting-agents-eribulin-and-paclitaxel-differentially-affect-neuronal-cell-bodies-in-chemotherapy-induced-peripheral-neuropathy
#18
Sarah J Benbow, Krystyna M Wozniak, Bridget Kulesh, April Savage, Barbara S Slusher, Bruce A Littlefield, Mary Ann Jordan, Leslie Wilson, Stuart C Feinstein
Chemotherapy-induced peripheral neuropathy (CIPN) is a common side effect of anticancer treatment with microtubule-targeted agents (MTAs). The frequency of severe CIPN, which can be dose limiting and even life threatening, varies widely among different MTAs. For example, paclitaxel induces a higher frequency of severe CIPN than does eribulin. Different MTAs also possess distinct mechanisms of microtubule-targeted action. Recently, we demonstrated that paclitaxel and eribulin differentially affect sciatic nerve axons, with paclitaxel inducing more pronounced neurodegenerative effects and eribulin inducing greater microtubule stabilizing biochemical effects...
July 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28381989/bioactive-fraction-of-annona-reticulata-bark-or-ziziphus-jujuba-root-bark-along-with-insulin-attenuates-painful-diabetic-neuropathy-through-inhibiting-nf-%C3%AE%C2%BAb-inflammatory-cascade
#19
Raghuram Kandimalla, Suvakanta Dash, Sanjeeb Kalita, Bhaswati Choudhury, Sandeep Malampati, Rajlakshmi Devi, Muthiah Ramanathan, Narayan C Talukdar, Jibon Kotoky
The present study explains the neuroprotective ability of bioactive fractions of Annona reticulata bark (ARB) and Ziziphus jujuba root bark (ZJ) along with insulin against diabetic neuropathy. By using different solvents of increasing polarity ARB and ZJ were undergone for bioactive guided fractionation. The neuroprotective ability of the all the plant fractions were tested against H2O2 induced toxicity in SHSY5Y neuroblastoma cell lines and DRG neuronal cells. Among all the fractions tested, the methanol extract of ARB and ZJ (ARBME and ZJME) and its water fractions (ARBWF and ZJWF) exhibited significant neuroprotection against H2O2 induced toxicity in SHSY5Y cells and DRG neuronal cells...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28381802/prophylactic-administration-of-aucubin-inhibits-paclitaxel-induced-mechanical-allodynia-via-the-inhibition-of-endoplasmic-reticulum-stress-in-peripheral-schwann-cells
#20
Tsugunobu Andoh, Daisuke Uta, Mitsuru Kato, Kazufumi Toume, Katsuko Komatsu, Yasushi Kuraishi
Paclitaxel is a chemotherapeutic agent that causes peripheral neuropathy as its major dose-limiting side effect. However, the peripheral neuropathy is difficult to manage. A study we recently conducted showed that repetitive administration of aucubin as a prophylactic inhibits paclitaxel-induced mechanical allodynia. However, the mechanisms underlying the anti-allodynic activity of aucubin, which is a major component of Plantaginis Semen, was unclear. In addition to mechanical allodynia, aucubin inhibited spontaneous and mechanical stimuli-induced firing in spinal dorsal horn neurons; however, catalpol, a metabolite of aucubin, did not show these effects...
2017: Biological & Pharmaceutical Bulletin
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