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Peripherical nerve

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https://www.readbyqxmd.com/read/28433438/analgesic-effects-of-transcutaneous-ultrasound-nerve-stimulation-in-a-rat-model-of-oxaliplatin-induced-mechanical-hyperalgesia-and-cold-allodynia
#1
Yueh-Ling Hsieh, Han-Yu Chen, Ching-Hsiang Yang, Chen-Chia Yang
This study investigated the effects and underlying mechanisms of therapeutic ultrasound (TUS) in a rat model of oxaliplatin-induced peripheral neuropathy. Animals received a total of eight injections with oxaliplatin (4 mg/kg), administered at 3-d intervals. TUS intervention (1 MHz, 0.5 W/cm(2)) started on the fifth oxaliplatin administration and continued for 10 consecutive d. Sensory behavioral examinations, protein levels of transient receptor potential channels (TRPM8 and TRPV1) in dorsal root ganglia (DRG) and substance P (SP) in spinal dorsal horn were examined...
April 19, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28432749/motor-nerve-excitability-after-childhood-guillain-barr%C3%A3-syndrome
#2
Judith Drenthen, Joyce Roodbol, Ellen M Maathuis, Coriene E Catsman-Berrevoets, Joleen H Blok, Marie-Claire Y de Wit, Bart C Jacobs
OBJECTIVE: To determine the residual motor nerve dysfunction after pediatric Guillain-Barré syndrome (GBS). METHODS: Observational cross-sectional cohort study in patients who previously developed GBS during childhood (<18 years). Ulnar motor nerve dysfunction was defined by compound motor action potential (CMAP) scan in patients after a follow-up of at least one year compared with age-matched healthy controls, in relation to clinical course and outcome. RESULTS: Thirty-seven persons previously diagnosed with GBS in childhood were included with a mean age at current examination of 20...
April 21, 2017: Journal of the Peripheral Nervous System: JPNS
https://www.readbyqxmd.com/read/28432372/evaluation-of-the-auditory-pathway-in-traffic-policemen
#3
Vipul Indora, Farah Khaliq, Neelam Vaney
BACKGROUND: Traffic policemen working at heavy traffic junctions are continuously exposed to high level of noise and its health consequences. OBJECTIVE: To assess the hearing pathway in traffic policemen by means of brainstem evoked response audiometry (BERA), mid-latency response (MLR), and slow vertex response (SVR). METHODS: In this observational comparative study, BERA, MLR, and SVR were tested in 35 male traffic policemen with field posting of more than 3 years...
April 2017: International Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28432188/magnetic-resonance-neurography-visualizes-abnormalities-in-sciatic-and-tibial-nerves-in-patients-with-type-1-diabetes-and-neuropathy
#4
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/28431576/enhanced-neuroinvasion-by-smaller-soluble-prions
#5
Cyrus Bett, Jessica Lawrence, Timothy D Kurt, Christina Orru, Patricia Aguilar-Calvo, Anthony E Kincaid, Witold K Surewicz, Byron Caughey, Chengbiao Wu, Christina J Sigurdson
Infectious prion aggregates can propagate from extraneural sites into the brain with remarkable efficiency, likely transported via peripheral nerves. Yet not all prions spread into the brain, and the physical properties of a prion that is capable of transit within neurons remain unclear. We hypothesized that small, diffusible aggregates spread into the CNS via peripheral nerves. Here we used a structurally diverse panel of prion strains to analyze how the prion conformation impacts transit into the brain. Two prion strains form fibrils visible ultrastructurally in the brain in situ, whereas three strains form diffuse, subfibrillar prion deposits and no visible fibrils...
April 21, 2017: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/28430692/lack-of-association-between-the-use-of-nerve-blockade-and-the-risk-of-postoperative-chronic-opioid-use-among-patients-undergoing-total-knee-arthroplasty-evidence-from-the-marketscan-database
#6
Eric C Sun, Brian T Bateman, Stavros G Memtsoudis, Mark D Neuman, Edward R Mariano, Laurence C Baker
BACKGROUND: Total knee arthroplasty (TKA) is associated with high rates of prolonged opioid use after surgery (10%-34%). By decreasing opioid use in the immediate postoperative period, perioperative nerve blockade has been hypothesized to decrease the risk of persistent opioid use. METHODS: Using health care utilization data, we constructed a sample of 120,080 patients undergoing TKA between 2002 and 2012 and used billing data to identify the utilization of peripheral or neuraxial blockade...
April 19, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28430691/continuous-peripheral-nerve-blocks-and-alternative-regional-analgesic-modalities-clarification-regarding-relative-superiority
#7
Brian M Ilfeld
No abstract text is available yet for this article.
April 19, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28429515/a-device-to-measure-secretion-of-individual-sweat-glands-for-diagnosis-of-peripheral-neuropathy
#8
Adam J Loavenbruck, James S Hodges, Vincenzo Provitera, Maria Nolano, Gwen Wendelshafer-Crabb, William R Kennedy
INTRODUCTION: There is a need for quantitative, precise assessment of small fiber peripheral nerve function. We tested a customized camera device and protocol designed to quantify secretions of individual sweat glands (SGs). MATERIALS AND METHODS: Testing was performed on 178 healthy controls and 20 neuropathy subjects. Sweating was stimulated on a 2.25 cm(2) skin area by iontophoresis of pilocarpine. The camera imaged sweat from 50-400 sweat ducts. We calculated secretion rate of individual SGs, total sweat volume, and number of secreting SGs at four body sites...
April 21, 2017: Journal of the Peripheral Nervous System: JPNS
https://www.readbyqxmd.com/read/28429469/high-body-mass-and-kidney-dysfunction-relate-to-worse-nerve-function-even-in-adults-without-neuropathy
#9
Rens Hanewinckel, M Arfan Ikram, Oscar H Franco, Albert Hofman, Judith Drenthen, Pieter A van Doorn
Polyneuropathy is a prevalent and disabling disorder. Despite extensive evaluation, the cause often remains unknown. Factors that predispose for the development of polyneuropathy need to be identified. We investigated the effect of anthropometric and metabolic factors on peripheral nerve function in 908 participants of the population-based Rotterdam Study without any symptoms or signs of polyneuropathy. Participants underwent nerve conduction studies of the sural and peroneal nerve. Data on age, height, weight, waist circumference, diabetes, lipid levels, hypertension and kidney function were collected...
April 20, 2017: Journal of the Peripheral Nervous System: JPNS
https://www.readbyqxmd.com/read/28429332/the-effect-of-post-injection-18-f-fdg-pet-scanning-time-on-texture-analysis-of-peripheral-nerve-sheath-tumours-in-neurofibromatosis-1
#10
Eitan Lovat, Musib Siddique, Vicky Goh, Rosalie E Ferner, Gary J R Cook, Victoria S Warbey
BACKGROUND: Texture features are being increasingly evaluated in (18)F-fluorodeoxyglucose positron emission tomography ((18)F-FDG PET) as adjunctive imaging biomarkers in a number of different cancers. Whilst studies have reported repeatability between scans, there have been no studies that have specifically investigated the effect that the time of acquisition post-injection of (18)F-FDG has on texture features. The aim of this study was to investigate if texture features change between scans performed at different time points post-injection...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28429126/assessing-the-role-of-place-and-timing-cues-in-coding-frequency-and-amplitude-modulation-as-a-function-of-age
#11
Kelly L Whiteford, Heather A Kreft, Andrew J Oxenham
Natural sounds can be characterized by their fluctuations in amplitude and frequency. Ageing may affect sensitivity to some forms of fluctuations more than others. The present study used individual differences across a wide age range (20-79 years) to test the hypothesis that slow-rate, low-carrier frequency modulation (FM) is coded by phase-locked auditory-nerve responses to temporal fine structure (TFS), whereas fast-rate FM is coded via rate-place (tonotopic) cues, based on amplitude modulation (AM) of the temporal envelope after cochlear filtering...
April 20, 2017: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/28429047/therapeutic-outcome-of-ct-guided-radiofrequency-ablation-in-patients-with-osteoid-osteoma
#12
Louis Lassalle, R Campagna, G Corcos, A Babinet, F Larousserie, J Stephanazzi, A Feydy
OBJECTIVE: To assess the long-term outcome of computed tomography-guided radiofrequency ablation (CT-guided RFA) in patients with suspected osteoid osteoma (OO). MATERIALS AND METHODS: Single-center retrospective study. Patients with clinical suspicion and imaging diagnosis of osteoid osteoma were treated by CT-guided RFA using the same device with either a 7- or 10-mm active tip electrode. Specific precautions were applied in case of articular or spinal OO. Patients were contacted by phone to evaluate the long-term outcome in terms of pain, ability to perform daily activities (including sports), and long-term complications...
April 20, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28428901/microcystic-reticular-schwannoma-of-the-frontal-lobe-an-unusual-occurrence
#13
Lauren Pearson, Erinc Akture, Julien Wonderlick, Gregory Fuller, Maryam Zenali
Schwannoma is a benign peripheral nerve sheath tumor that typically involves cranial nerves of the head and neck region. Intraparenchymal occurrence of this tumor is uncommon. Even rarer in this site is the microcystic/reticular pattern of schwannoma. This histologic variant, first described in 2008, has a predilection for visceral organs. Herein, we report the first case of microcystic/reticular schwannoma of the frontal lobe.
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/28427125/-the-clinical-value-of-sudoscan-in-diagnosis-of-diabetic-distal-symmetrical-peripheral-neuropathy
#14
J J Ma, S L Hao, X T Cheng, Y Yuan
Objective: To evaluate the clinical value of SUDOSCAN in diagnosis of diabetic distal symmetrical peripheral neuropathy. Methods: According to the diagnostic criteria for multiple diabetic distal symmetrical peripheral neuropathy, a total of 130 patients with type 2 diabetes mellitus (T2DM) in Department of Endocrinology, the Affiliated Hospital of Qingdao University between August 2015 and July 2016 were divided into two groups, diabetic peripheral neuropathy group (DPN group, 50 cases) and non-diabetic peripheral neuropathy group (NDPN group, 80 cases)...
April 18, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28427078/a-case-of-adult-metastatic-rhabdomyosarcoma-of-the-prostate-cured-by-long-term-chemotherapy-with-local-radiation
#15
Masato Konno, Koji Mitsuzuka, Shigeyuki Yamada, Shinichi Yamashita, Yasuhiro Kaiho, Akihiro Ito, Mika Watanabe, Yoichi Arai
A 32-year-old man visited our hospital due to urinary retention. Prostate-specific antigen was 13.7 ng/mL. Imaging examinations showed a large prostatic tumor and lung and internal iliac lymph node metastases. Transrectal biopsy confirmed embryonal rhabdomyosarcoma of the prostate classified as cT2bN1M1 (stage IV) by the International Rhabdomyosarcoma Study (IRS) Group staging system. Systemic chemotherapy was started according to the IRS III regimen 36, which consisted of 16 weeks of induction chemotherapy with radiation...
April 21, 2017: Urologia Internationalis
https://www.readbyqxmd.com/read/28426967/an-intrinsic-epigenetic-barrier-for-functional-axon-regeneration
#16
Yi-Lan Weng, Ran An, Jessica Cassin, Jessica Joseph, Ruifa Mi, Chen Wang, Chun Zhong, Seung-Gi Jin, Gerd P Pfeifer, Alfonso Bellacosa, Xinzhong Dong, Ahmet Hoke, Zhigang He, Hongjun Song, Guo-Li Ming
Mature neurons in the adult peripheral nervous system can effectively switch from a dormant state with little axonal growth to robust axon regeneration upon injury. The mechanisms by which injury unlocks mature neurons' intrinsic axonal growth competence are not well understood. Here, we show that peripheral sciatic nerve lesion in adult mice leads to elevated levels of Tet3 and 5-hydroxylmethylcytosine in dorsal root ganglion (DRG) neurons. Functionally, Tet3 is required for robust axon regeneration of DRG neurons and behavioral recovery...
April 19, 2017: Neuron
https://www.readbyqxmd.com/read/28426158/a-novel-technique-for-decellularization-of-allogenic-nerves-and-in-vivo-study-of-their-use-for-peripheral-nerve-reconstruction
#17
F Boriani, N Fazio, C Fotia, L Savarino, N Nicoli Aldini, L Martini, N Zini, M Bernardini, N Baldini
Autografts represent the gold standard for peripheral nerve reconstruction but their limited availability, the discrepancy of nerve caliber and long surgical times are drawbacks. Allografts have therefore become a valid alternative option. In particular, acellular nerve allografts (ANAs) rather than fresh allografts do not need immunosuppression and appear to be safe and effective based on recent studies. An innovative method was conceived to obtain ANAs, so as to speed up nerve decellularization, without compromising nerve architecture, and without breaking the asepsis chain...
April 20, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28425912/how-spatial-release-from-masking-may-fail-to-function-in-a-highly-directional-auditory-system
#18
Norman Lee, Andrew C Mason
Spatial release from masking (SRM) occurs when spatial separation between a signal and masker decreases masked thresholds. The mechanically-coupled ears of Ormia ochracea are specialized for hyperacute directional hearing, but the possible role of SRM, or whether such specializations exhibit limitations for sound source segregation, is unknown. We recorded phonotaxis to a cricket song masked by band-limited noise. With a masker, response thresholds increased and localization was diverted away from the signal and masker...
April 20, 2017: ELife
https://www.readbyqxmd.com/read/28425503/nerve-degeneration-and-regeneration-in-the-cephalopod-mollusc-octopus-vulgaris-the-case-of-the-pallial-nerve
#19
Pamela Imperadore, Sameer B Shah, Helen P Makarenkova, Graziano Fiorito
Regeneration is a process that restores structure and function of tissues damaged by injury or disease. In mammals complete regeneration is often unsuccessful, while most of the low phyla animals can re-grow many parts of their body after amputation. Cephalopod molluscs, and in particular Octopus vulgaris, are well known for their capacity to regenerate their arms and other body parts, including central and peripheral nervous system. To better understand the mechanism of recovery following nerve injury in this species we investigated the process of axon regrowth and nerve regeneration after complete transection of the Octopus pallial nerves...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28424681/the-spontaneous-autoimmune-neuromyopathy-in-icosl-nod-mice-is-cd4-t-cell-and-interferon-%C3%AE-dependent
#20
Claire Briet, Gwladys Bourdenet, Ute C Rogner, Chantal Becourt, Isabelle Tardivel, Laurent Drouot, Christophe Arnoult, Jean-Claude do Rego, Nicolas Prevot, Charbel Massaad, Olivier Boyer, Christian Boitard
Abrogation of ICOS/ICOS ligand (ICOSL) costimulation prevents the onset of diabetes in the non-obese diabetic (NOD) mouse but, remarkably, yields to the development of a spontaneous autoimmune neuromyopathy. At the pathological level, ICOSL(-/-) NOD mice show stronger protection from insulitis than their ICOS(-/-) counterparts. Also, the ICOSL(-/-) NOD model carries a limited C57BL/6 region containing the Icosl nul mutation, but, in contrast to ICOS(-/-) NOD mice, no gene variant previously reported as associated to NOD diabetes...
2017: Frontiers in Immunology
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