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Sciatic neuropathy

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https://www.readbyqxmd.com/read/28230504/peripheral-neuropathy-and-leptin-receptor-defect-demyelination-of-the-sciatic-nerve-of-the-obese-zucker-rat
#1
Jacques Gilloteaux, Kritika Subramanian, Nadia Solomon
No abstract text is available yet for this article.
January 2017: Ultrastructural Pathology
https://www.readbyqxmd.com/read/28226286/peripheral-nerve-ultrasonography-in-patients-with-transthyretin-amyloidosis
#2
Simon Podnar, Stayko Sarafov, Ivailo Tournev, Gregor Omejec, Janez Zidar
OBJECTIVE: To systematically study peripheral nerve morphology in patients with transthyretin (TTR) amyloidosis and TTR gene mutation carriers using high-resolution ultrasonography (US). METHODS: In this prospective cross-sectional study we took a structured history, performed neurological examination, and measured peripheral nerve cross-sectional areas (CSAs) bilaterally at 28 standard locations using US. Demographic and US findings were compared to controls. RESULTS: Peripheral nerve CSAs were significantly larger in 33 patients with familial amyloid polyneuropathy (FAP) compared to 50 controls, most dramatically at the common entrapment sites (median nerve at the wrist, ulnar nerve at the elbow), and in the proximal nerve segments (median nerve in the upper arm, sciatic nerve in the thigh)...
January 29, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28224633/gluteal-compartment-syndrome-with-neurologic-impairment-report-of-two-cases-and-review-of-the-literature
#3
Greg D Kuhlman, Kelly G Gwathmey
INTRODUCTION: We describe two patients who developed gluteal compartment syndrome (GCS) in the context of drug overdose. One patient developed a sciatic neuropathy and one patient a lumbosacral plexopathy. METHODS: We reviewed the literature of atraumatic GCS and resultant neurological impairment. RESULTS: We review 26 cases (our two and 24 previously published) of GCS and neurological impairment. All patients developed GCS in the context of drug or alcohol overdose...
February 22, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28214338/sciatic-neuropathy-due-to-popliteal-fossa-nerve-block
#4
Adam Aubuchon, W David Arnold, Anna Bracewell, J Chad Hoyle
INTRODUCTION: Sciatic neuropathy following popliteal nerve block (PNB) for regional anesthesia is considered uncommon but has been increasingly recognized in the literature. We identified a case of sciatic neuropathy that occurred after bunionectomy during which a PNB had been performed. METHODS: To understand the frequency of PNB-related sciatic neuropathy we performed a retrospective review of sciatic neuropathies at our center over a five year period. RESULTS: Forty-five cases of sciatic neuropathy were reviewed...
February 18, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28206686/nte-pnpla6-is-expressed-in-mature-schwann-cells-and-is-required-for-glial-ensheathment-of-remak-fibers
#5
Janis McFerrin, Bruce L Patton, Elizabeth R Sunderhaus, Doris Kretzschmar
Neuropathy target esterase (NTE) or patatin-like phospholipase domain containing 6 (PNPLA6) was first linked with a neuropathy occurring after organophosphate poisoning and was later also found to cause complex syndromes when mutated, which can include mental retardation, spastic paraplegia, ataxia, and blindness. NTE/PNPLA6 is widely expressed in neurons but experiments with its Drosophila orthologue Swiss-cheese (SWS) suggested that it may also have glial functions. Investigating whether NTE/PNPLA6 is expressed in glia, we found that NTE/PNPLA6 is expressed by Schwann cells in the sciatic nerve of adult mice with the most prominent expression in nonmyelinating Schwann cells...
February 16, 2017: Glia
https://www.readbyqxmd.com/read/28203505/bilateral-sciatic-neuropathy-after-an-autologous-breast-reconstruction-in-a-massive-weight-loss-patient
#6
Ramy Abdel-Naby, Michael Ablavsky, Aleksandr Shteynberg
Perioperative compression neuropathy is a known potential complication of prolonged surgical procedures. Sciatic postoperative neuropathy has rarely been reported. We present a 34-year-old woman who underwent right breast reconstruction with supercharged (venous anastomosis) transverse rectus abdominis flap and developed bilateral sciatic compression neuropathy. Her history was remarkable for sleeve gastrectomy 2 years earlier resulting in 105 pound weight loss 1 year before breast reconstruction. During the procedure, the patient was in the supine position for 8 hours and in the semirecumbent position for an additional 2 hours with the torso flexed at 30 degrees and knees flexed at approximately 45 degrees in addition to standard padding...
January 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28203223/impaired-axonal-regeneration-in-diabetes-perspective-on-the-underlying-mechanism-from-in-vivo-and-in-vitro-experimental-studies
#7
REVIEW
Kazunori Sango, Hiroki Mizukami, Hidenori Horie, Soroku Yagihashi
Axonal regeneration after peripheral nerve injury is impaired in diabetes, but its precise mechanisms have not been elucidated. In this paper, we summarize the progress of research on altered axonal regeneration in animal models of diabetes and cultured nerve tissues exposed to hyperglycemia. Impaired nerve regeneration in animal diabetes can be attributed to dysfunction of neurons and Schwann cells, unfavorable stromal environment supportive of regenerating axons, and alterations of target tissues receptive to reinnervation...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28190392/pi3k-akt-pathway-a-potential-therapeutic-target-for-chronic-pain
#8
Shu-Ping Chen, Ya-Qun Zhou, Dai-Qiang Liu, Wen Zhang, Anne Manyande, Xue-Hai Guan, Yu-Ke Tian, Da-Wei Ye, Deeq Mohamed Omar
Chronic pain is among the most disabling and costly disorders, with prevalence ranging from 10% to 55%. However, current therapeutic strategies for chronic pain are unsatisfactory due to our poor understanding of its mechanisms. Thus, novel therapeutic targets need to be found in order to improve these patients' quality of life. PI3K and its downstream Akt are widely expressed in the spinal cord, particularly in the laminae I-IV of the dorsal horn, where nociceptive C and Aδ fibers of primary afferents principally terminate...
February 10, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28182729/rikkunshito-prevents-paclitaxel-induced-peripheral-neuropathy-through-the-suppression-of-the-nuclear-factor-kappa-b-nf%C3%AE%C2%BAb-phosphorylation-in-spinal-cord-of-mice
#9
Junzo Kamei, Shunsuke Hayashi, Akane Sakai, Yuki Nakanishi, Misa Kai, Megumi Ikegami, Hiroko Ikeda
Peripheral neuropathy is the major side effect caused by paclitaxel, a microtubule-binding antineoplastic drug. Paclitaxel-induced peripheral neuropathy causes a long-term negative impact on the patient's quality of life. However, the mechanism underlying paclitaxel-induced peripheral neuropathy is still unknown, and there is no established treatment. Ghrelin is known to attenuate thermal hyperalgesia and mechanical allodynia in chronic constriction injury of the sciatic nerve, and inhibit the activation of nuclear factor kappa B (NFκB) in the spinal dorsal horn...
2017: PloS One
https://www.readbyqxmd.com/read/28119836/diagnostic-cutoff-value-for-ultrasonography-of-the-common-fibular-neuropathy-at-the-fibular-head
#10
Ji Yeon Kim, Seojin Song, Hye Jung Park, Won Ihl Rhee, Sun Jae Won
OBJECTIVE: To establish the diagnostic cutoff value of ultrasonographic measurement for common fibular neuropathy (CFN) at the fibular head (FH). METHODS: Twenty patients with electrodiagnostically diagnosed CFN at the FH and 30 healthy controls were included in the study. The cross-sectional area (CSA) of sciatic nerve at mid-thigh level, common fibular nerve at popliteal fossa (PF), and common fibular (CF) nerve at FH were measured. Additionally, the difference of CF nerve CSA at the FH between symptomatic side and asymptomatic side (ΔSx-Asx), the ratio of CF nerve CSA at FH to at PF (FH/PF), and the ratio of CF nerve CSA at the FH symptomatic side to asymptomatic side (Ratio Sx-Asx) were calculated...
December 2016: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28119076/spinal-astrocytic-c-jun-n-terminal-kinase-jnk-activation-as-counteracting-mechanism-to-the-amitriptyline-analgesic-efficacy-in-painful-peripheral-neuropathies
#11
Maria Domenica Sanna, Carla Ghelardini, Nicoletta Galeotti
Several drugs and agents are currently used for the treatment of neuropathic pain. Among them amitriptyline, a tricyclic antidepressant drug, represent a first line treatment. Despite its well-documented clinical efficacy, amitriptyline is ineffective in some animal models of neuropathic pain. The aim of this study was to investigate into amitriptyline poor efficacy in neuropathic pain and to determine the role of c-Jun N-terminal kinase (JNK) activation as counteracting mechanism to the analgesic effects of this drug...
January 21, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28108290/pmp22-mutant-allele-specific-sirna-alleviates-demyelinating-neuropathic-phenotype-in-vivo
#12
Ji-Su Lee, Eun Hyuk Chang, Ok Jae Koo, Dong Hwan Jwa, Won Min Mo, Geon Kwak, Hyo Won Moon, Hwan Tae Park, Young Bin Hong, Byung-Ok Choi
Charcot-Marie-Tooth disease (CMT) is a genetic disorder that can be caused by aberrations in >80 genes. CMT has heterogeneous modes of inheritance, including autosomal dominant, autosomal recessive, X-linked dominant, and X-linked recessive. Over 95% of cases are dominantly inherited. In this study, we investigated whether regulation of a mutant allele by an allele-specific small interfering RNA (siRNA) can alleviate the demyelinating neuropathic phenotype of CMT. We designed 19 different allele-specific siRNAs for Trembler J (Tr-J) mice harboring a naturally occurring mutation (Leu16Pro) in Pmp22...
January 17, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28103857/ameliorative-potential-of-alstonia-scholaris-linn-r-br-against-chronic-constriction-injury-induced-neuropathic-pain-in-rats
#13
Hasandeep Singh, Rohit Arora, Saroj Arora, Balbir Singh
BACKGROUND: Alstonia scholaris commonly known as 'Saptaparni' is an Indian traditional medicinal plant used in Ayurveda. It is commonly used to treat various disorders like asthma, bronchitis, diarrhea, dysentery and malaria. In folklore medicine the milky juice of the plant is applied on wounds and ulcers to treat pain, ear ache and also in rheumatic pains. AIM: The present study was designed to investigate the potential of A. scholaris R. Br. in chronic constriction injury of sciatic nerve (CCI) induced neuropathic pain in rats...
January 19, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28065675/altered-expression-of-irs2-and-grb2-in-demyelination-of-peripheral-neurons-implications-in-diabetic-neuropathy
#14
Mallahalli S Manu, Kuruvanthe S Rachana, Gopal M Advirao
Demyelination of the peripheral nerves and dysfunction of Schwann cells (SCs) are the chronic complications involved in the development of peripheral neuropathy among diabetic patients. Insulin signaling plays an important role in restoring the myelin proteins in diabetic peripheral neuropathy (DPN). Since insulin levels are altered in diabetes, it becomes of great interest to appreciate the role and regulation of docking and adaptor protein, how these proteins respond to variations in the levels of insulin as experienced in juvenile diabetes...
December 29, 2016: Neuropeptides
https://www.readbyqxmd.com/read/28054138/-ultrasound-guided-interventions-on-the-peripheral-nervous-system
#15
A Loizides, L Gruber, S Peer, M Plaikner, H Gruber
CLINICAL/METHODICAL ISSUE: Up to the advent of high-resolution ultrasound, interventions on the peripheral nervous system, including local anesthesia and pain treatment were performed without visual guidance, which in some cases led to treatment failure or local tissue and nerve damage. METHODICAL INNOVATIONS: Progress in the field of ultrasound has enabled the functional visualization, anesthesia and anti-inflammatory or neurolytic treatment of many peripheral nerves, such as the brachial plexus, nerves of the upper and lower extremities and various nerves of the trunk...
January 4, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28040792/autophagy-in-tri-o-cresyl-phosphate-induced-delayed-neurotoxicity
#16
Hai-Yang Xu, Pan Wang, Ying-Jian Sun, Lu Jiang, Ming-Yuan Xu, Yi-Jun Wu
The widely used organophosphorus compound tri-o-cresyl phosphate (TOCP) elicits delayed neurotoxicity characterized by progressive axonal degeneration in the spinal cord and peripheral nerves. However, the precise mechanisms of TOCP-induced delayed neurotoxicity are not clear. Because autophagy has been linked to the pathogenesis of neurodegenerative diseases, we aimed to characterize autophagy in the progression of TOCP-induced delayed neurotoxicity. In vivo experiments using the adult hen animal model showed that autophagy in spinal cord axons and in sciatic nerves was markedly induced at the early preclinical stage of TOCP-induced delayed neurotoxicity; it was decreased as the delayed neurotoxicity progressed to the overt neuropathy stage...
December 31, 2016: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/27986591/spinal-d-serine-increases-pkc-dependent-glun1-phosphorylation-contributing-to-the-sigma-1-receptor-induced-development-of-mechanical-allodynia-in-a-mouse-model-of-neuropathic-pain
#17
Sheu-Ran Choi, Ji-Young Moon, Dae-Hyun Roh, Seo-Yeon Yoon, Soon-Gu Kwon, Hoon-Seong Choi, Suk-Yun Kang, Ho-Jae Han, Alvin J Beitz, Jang-Hern Lee
: We have recently demonstrated that spinal sigma-1 receptor (Sig-1R) activation facilitates nociception via an increase in phosphorylation of the NMDA receptor GluN1 subunit (pGluN1). The present study was designed to examine whether the Sig-1R-induced facilitative effect on NMDA-induced nociception is mediated by D-serine, and whether D-serine modulates spinal pGluN1 expression and the development of neuropathic pain following chronic constriction injury (CCI) of the sciatic nerve. Intrathecal administration of the D-serine degrading enzyme, DAAO attenuated the facilitation of NMDA-induced nociception induced by the Sig-1R agonist, PRE084...
December 13, 2016: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/27943583/human-dental-pulp-stem-cells-expressing-stro-1-c-kit-and-cd34-markers-in-peripheral-nerve-regeneration
#18
Gianluca Carnevale, Alessandra Pisciotta, Massimo Riccio, Laura Bertoni, Sara De Biasi, Lara Gibellini, Alessio Zordani, Gian Maria Cavallini, Giovanni Battista La Sala, Giacomo Bruzzesi, Adriano Ferrari, Andrea Cossarizza, Anto de Pol
Peripheral nerve injuries are a commonly encountered clinical problem and often result in long-term functional defects. The application of stem cells able to differentiate in Schwann cells-like cells in vitro and in vivo, could represent an attractive therapeutic approach for the treatment of nerve injuries. Further, stem cells sources sharing the same embryological origin of Schwann cells might be considered a suitable tool. The aim of this study was to demonstrate the ability of a neuroectodermal subpopulation of human STRO-1+/c-Kit+/CD34+ DPSCs, expressing P75(NTR) , Nestin and SOX-10, to differentiate into Schwann cells-like cells in vitro and to promote axonal regeneration in vivo, which led to functional recovery as measured by sustained gait improvement, in animal rat model of peripheral nerve injury...
December 11, 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27901476/the-change-of-hcn1-hcn2-mrna-expression-in-peripheral-nerve-after-chronic-constriction-injury-induced-neuropathy-followed-by-pulsed-electromagnetic-field-therapy
#19
Hui Liu, Jun Zhou, Lianbing Gu, Yunxia Zuo
Neuropathic pain is usually defined as a chronic pain state caused by peripheral or central nerve injury as a result of acute damage or systemic diseases. It remains a difficult disease to treat. Recent studies showed that the frequency of action potentials in nociceptive afferents is affected by the activity of hyperpolarization-activated cyclic nucleotide-gated cation channels (HCN) family. In the current study, we used a neuropathy rat model induced by chronic constriction injury (CCI) of sciatic nerve to evaluate the change of expression of HCN1/HCN2 mRNA in peripheral nerve and spinal cord...
January 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/27900300/treatment-of-proximal-hamstring-tendinopathy-related-sciatic-nerve-entrapment-presentation-of-an-ultrasound-guided-intratissue-percutaneous-electrolysis-application
#20
Gabriele Mattiussi, Carlos Moreno
BACKGROUND: Proximal Hamstring Tendinopathy-related Sciatic Nerve Entrapment (PHTrSNE) is a neuropathy caused by fibrosis interposed between the semimembranosus tendon and the sciatic nerve, at the level of the ischial tuberosity. METHODS: Ultrasound-guided Intratissue Percutaneous Electrolysis (US-guided EPI) involves galvanic current transfer within the treatment target tissue (fibrosis) via a needle 0.30 to 0.33 mm in diameter. The galvanic current in a saline solution instantly develops the chemical process of electrolysis, which in turn induces electrochemical ablation of fibrosis...
April 2016: Muscles, Ligaments and Tendons Journal
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