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Sciatic neuropathy

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https://www.readbyqxmd.com/read/28444825/3-tesla-magnetic-resonance-imaging-study-of-the-normal-canine-femoral-and-sciatic-nerves
#1
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
#2
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
#3
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
#4
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
#5
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...
April 8, 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
#6
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
#7
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
https://www.readbyqxmd.com/read/28360533/effects-of-decompression-on-behavioral-electrophysiologic-and-histomorphologic-recovery-in-a-chronic-sciatic-nerve-compression-model-of-streptozotocin-induced-diabetic-rats
#8
Ping-Hui Wang, Cheng-Chang Yang, Wei-Ren Su, Po-Ting Wu, Shun-Chien Cheng, I-Ming Jou
PURPOSE: To determine susceptibility to decompression surgery in diabetic and nondiabetic peripheral neuropathy using a chronic compression neuropathy model. MATERIALS AND METHODS: Twenty-four streptozotocin-induced diabetic rats were randomly divided into three groups: group I, chronic compression of the left sciatic nerve for 4 weeks with decompression; group II, similar without decompression; and group III, sham exposing the sciatic nerve only. The other 24 nondiabetic rats were assigned to groups IV-VI, which received compression-decompression, compression, and the sham operation, respectively...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28357568/high-resolution-metal-artifact-reduction-mr-imaging-of-the-lumbosacral-plexus-in-patients-with-metallic-implants
#9
Shivani Ahlawat, Steven E Stern, Allan J Belzberg, Jan Fritz
OBJECTIVE: To assess the quality and accuracy of metal artifact reduction sequence (MARS) magnetic resonance imaging (MRI) for the diagnosis of lumbosacral neuropathies in patients with metallic implants in the pelvis. MATERIALS AND METHODS: Twenty-two subjects with lumbosacral neuropathy following pelvic instrumentation underwent 1.5-T MARS MRI including optimized axial intermediate-weighted and STIR turbo spin echo sequences extending from L5 to the ischial tuberosity...
March 30, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28349969/minoxidil-is-a-potential-neuroprotective-drug-for-paclitaxel-induced-peripheral-neuropathy
#10
Yi-Fan Chen, Li-Hsien Chen, Yu-Min Yeh, Pei-Ying Wu, Yih-Fung Chen, Lian-Yun Chang, Jang-Yang Chang, Meng-Ru Shen
Chemotherapy-induced peripheral neuropathy (CIPN) is a common side effect of cancer treatment. No medication has been shown to be effective in the treatment of CIPN. This study aims to integrate the image-based high-content screening, mouse behavior models and mechanistic cell-based assays to discover potential neuroprotective drugs. Among screened compounds, minoxidil showed the most potent neuroprotective effect against paclitaxel, with regard to neurite outgrowth of dorsal root ganglia (DRG). Minoxidil protected mice from thermal insensitivity and alleviated mechanical allodynia in paclitaxel-treated mice...
March 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28337574/the-rs504393-influences-the-level-of-nociceptive-factors-and-enhances-opioid-analgesic-potency-in-neuropathic-rats
#11
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/28315720/the-protective-effect-of-the-active-components-of-erpc-on-diabetic-peripheral-neuropathy-in-rats
#12
Gai-Mei Hao, Yong-Gang Liu, Yan Wu, Wei Xing, Shu-Zhen Guo, Yong Wang, Zheng-Lin Wang, Chun Li, Tian-Tian Lv, Hong-Liang Wang, Tian-Jiao Shi, Wei Wang, Jing Han
ETHNOPHARMACOLOGICAL RELEVANCE: Euonymus alatus, Radix trichosanthis, Panax notoginseng and Coptis chinensis are popular plants used in traditional Chinese medicine to treat diabetes. AIM OF THE STUDY: The aim of the study is to investigate the therapeutic effect of the active components of Euonymus alatus, Radix trichosanthis, Panax notoginseng and Coptis chinensis (cERPC) on diabetic peripheral neuropathy in the rats and explore the underlying mechanism involved...
March 15, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28294069/wallet-neuritis-an-example-of-peripheral-sensitization
#13
Md Abu Bakar Siddiq, Israt Jahan, Sam Masihuzzaman
BACKGROUND: Wallet neuritis is an example of extra-spinal tunnel neuropathy concerning sciatic nerve. Its clinical appearance often gets confused with sciatica of lumbar spine origin. Wallet-induced chronic sciatic nerve constriction produces gluteal and ipsilateral lower extremity pain, tingling, and burning sensation. It was Lutz, first describing credit-card wallet sciatica in an Attorney, surfaced on Journal of American Medical Association (JAMA), 1978; however, the condition has not been well-studied in various other occupations...
March 9, 2017: Current Rheumatology Reviews
https://www.readbyqxmd.com/read/28290778/improved-neural-microcirculation-and-regeneration-after-peripheral-nerve-decompression-in-dpn-rats
#14
Wenxiang Zhong, Min Yang, Wenchuan Zhang, Massimiliano Visocchi, Xiangjun Chen, Chenlong Liao
OBJECTIVE: Recently, neural microcirculation and regeneration were regarded as critical factors in diabetic peripheral neuropathy (DPN) improvement. In the present study, we explored the cytological and molecular mechanisms how peripheral nerve decompression impaired nerve injury. METHODS: Forty-five male SD rats were established as the DPN model. HE staining was used to observe the morphology and distribution of microvessels. Transmission electron microscopy was applied to observe the morphology and distribution of Schwann cells...
April 2017: Neurological Research
https://www.readbyqxmd.com/read/28286117/carvedilol-prevents-functional-deficits-in-peripheral-nerve-mitochondria-of-rats-with-oxaliplatin-evoked-painful-peripheral-neuropathy
#15
Aparna Areti, Prashanth Komirishetty, Ashutosh Kumar
Oxaliplatin use as chemotherapeutic agent is frequently limited by cumulative neurotoxicity which may compromise quality of life. Reports relate this neurotoxic effect to oxidative stress and mitochondrial dysfunction in peripheral nerves and dorsal root ganglion (DRG). Carvedilol is an antihypertensive drug, has also been appreciated for its antioxidant and mitoprotective properties. Carvedilol co-treatment did not reduce the anti-tumor effects of oxaliplatin in human colon cancer cells (HT-29), but exhibited free radical scavenging activity against oxaliplatin-induced oxidative stress in neuronal cells (Neuro-2a)...
May 1, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28284349/4-aminopyridine-ameliorates-experimental-autoimmune-neuritis-in-lewis-rats
#16
Kota Moriguchi, Katsuichi Miyamoto, Susumu Kusunoki
We investigated the effect of 4-aminopyridine (4-AP) on experimental autoimmune neuritis (EAN) using a 4-AP-treated group in which 4-AP was administered in the diet, and a control group (n=10 per group). Electrophysiological and pathological assessment was performed in the sciatic nerve. The EAN clinical scores were significantly lower in the 4-AP-treated group than in the control group (p<0.05). The motor conductance velocity two weeks post-immunization was significantly higher in the 4-AP-treated group (p<0...
April 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28283814/effect-of-photobiomodulation-therapy-808%C3%A2-nm-in-the-control-of-neuropathic-pain-in-mice
#17
Ana Laura Martins de Andrade, Paulo Sérgio Bossini, Azair Liane Matos do Canto De Souza, Ariane Dutra Sanchez, Nivaldo Antonio Parizotto
Neuropathic pain can be defined as the pain initiated or caused by a primary lesion or dysfunction of the central or peripheral nervous system. Photobiomodulation therapy (PBM) stands out among the physical therapy resources used for analgesia. However, application parameters, especially the energy density, remain controversial in the literature. Therefore, this study aimed to investigate the PBM effect, in different energy densities to control neuropathic pain in mice. Fifty (50) mice were induced to neuropathy by chronic constriction surgery of the sciatic nerve (CCI), treated with PBM (808 nm), and divided into five groups: GP (PBM simulation), GS (sham), GL10, GL20, GL40 (energy density of 10, 20, and 40 J/cm(2), respectively)...
March 10, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28282295/effects-of-luteolin-and-luteolin-morphine-co-administration-on-acute-and-chronic-pain-and-sciatic-nerve-ligated-induced-neuropathy-in-mice
#18
Mahmoud Hashemzaei, Mina Abdollahzadeh, Mehrdad Iranshahi, Ebrahim Golmakani, Ramin Rezaee, Kaveh Tabrizian
Background Neuropathic pain (NP) is a common condition accompanied by nerve injury. To date, there is no definite treatment approved for this disorder. In addition, many drugs that are used for NP cause adverse reactions. Luteolin is a naturally occurring flavonoid with diverse pharmacological properties such as anti-inflammatory, antioxidant and anticancer. We sought to investigate luteolin effects on chronic, acute and neuropathic pain as well as its potential to increase morphine anti-nociceptive effects in mice...
March 1, 2017: Journal of Complementary & Integrative Medicine
https://www.readbyqxmd.com/read/28272773/comparative-rna-seq-transcriptome-analyses-reveal-distinct-metabolic-pathways-in-diabetic-nerve-and-kidney-disease
#19
Lucy M Hinder, Meeyoung Park, Amy E Rumora, Junguk Hur, Felix Eichinger, Subramaniam Pennathur, Matthias Kretzler, Frank C Brosius, Eva L Feldman
Treating insulin resistance with pioglitazone normalizes renal function and improves small nerve fibre function and architecture; however, it does not affect large myelinated nerve fibre function in mouse models of type 2 diabetes (T2DM), indicating that pioglitazone affects the body in a tissue-specific manner. To identify distinct molecular pathways regulating diabetic peripheral neuropathy (DPN) and nephropathy (DN), as well those affected by pioglitazone, we assessed DPN and DN gene transcript expression in control and diabetic mice with or without pioglitazone treatment...
March 8, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28257395/stereological-study-on-the-number-of-synapses-in-the-rat-spinal-dorsal-horn-with-painful-diabetic-neuropathy-induced-by-streptozotocin
#20
Jing-Yan Lin, Xiao-Li Huang, Jing Chen, Zheng-Wei Yang, Jing Lin, San Huang, Bin Peng
Our previous studies showed that direct injury to the sciatic nerve (chronic constriction injury or axotomy) is associated with a numerical increase in synaptic number in the rat spinal dorsal horn. The aim of this study was to determine whether painful diabetic neuropathy (PDN) was also associated with numerical changes in the synaptic or neuronal numbers in the spinal dorsal horn. Overall, 17 adult SD rats were allocated randomly into the control group (n=5) and the streptozotocin (STZ) group (n=12). STZ was injected intraperitoneally to induce diabetes...
April 12, 2017: Neuroreport
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