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Nerve conduction studies

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https://www.readbyqxmd.com/read/29457605/negative-pressure-therapy-in-the-regeneration-of-the-sciatic-nerve-using-vacuum-assisted-closure-in-a-rabbit-model
#1
Jian-Ping Wu, Zhen-Huan Jiang, Xiao-Jun Feng, Jian-Nong Jiang, Mao-Hua Cheng
BACKGROUND The aim of this study was to investigate the effects of negative pressure therapy in the regeneration of the rabbit sciatic nerve using vacuum assisted closure (VAC). MATERIAL AND METHODS Thirty male New Zealand white rabbits underwent surgical injury of the sciatic nerve, followed by negative pressure therapy using vacuum assisted closure (VAC), in three treatment groups: Group A: 0 kPa; Group B: -20 kPa; Group C: -40 kPa. At 12 weeks following surgery, the following factors were studied: motor nerve conduction velocity (MNCV); the number of myelinated nerve fibers; the wet weight of the gastrocnemius muscle...
February 19, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29456810/minocycline-through-attenuation-of-oxidative-stress-and-inflammatory-response-reduces-the-neuropathic-pain-in-a-rat-model-of-chronic-constriction-injury
#2
Abolfazl Abbaszadeh, Saeideh Darabi, Amin Hasanvand, Hossein Amini-Khoei, Amir Abbasnezhad, Razieh Choghakhori, Asghar Aaliehpour
Objectives: Several lines of evidence showed that minocycline possesses antioxidant and anti-inflammatory properties. This study aimed to demonstrate the effects of minocycline in rats subjected to chronic constriction injury (CCI). Materials and Methods: In this study four groups (n = 6-8) of rats were used as follows: Sham, CCI, CCI + minocycline (MIN) 10 mg/Kg (IP) and CCI + MIN 30 mg/Kg (IP). On days 3, 7, 14, and 21 post-surgery hot-plate, acetone, and von Frey tests were carried out...
February 2018: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29456354/impact-of-aging-on-nerve-conduction-velocities-and-late-responses-in-healthy-individuals
#3
Suchitra Sachin Palve, Sachin Bhaskar Palve
Background: Nerve conduction studies are performed to diagnose the disorders of the peripheral nervous system. The reference values for nerve conduction velocity (NCV) and late responses for different nerves considerably vary in different group and type of population. Physiological factors such as age, temperature, height, and gender affect the NCV. However, there are very few studies which show the age group at which these changes become significant. Aim and Objectives: The aim of the study was to establish the electrophysiological data of the specific age group at which changes in NCV as well as late responses of median common peroneal nerve and also see the late response in the form of F-waves and H-reflex...
January 2018: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/29456348/efficacy-of-dexmedetomidine-as-an-adjuvant-to-local-anesthetic-agent-in-scalp-block-and-scalp-infiltration-to-control-postcraniotomy-pain-a-double-blind-randomized-trial
#4
Shankar Vallapu, Nidhi Bidyut Panda, Navneh Samagh, Neerja Bharti
Context: Scalp infiltration and scalp block are being used to manage postcraniotomy pain. Dexmedetomidine has been successfully used as an adjuvant in regional anesthesia. The study was intended to compare whether addition of dexmedetomidine prolonged the duration of analgesia as well as to compare the two techniques. Aims: The primary objective was to assess whether addition of dexmedetomidine to bupivacaine prolonged the duration of analgesia. The secondary objective was to compare between scalp nerve block and scalp infiltration as techniques for pain relief...
January 2018: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/29456344/hansen-s-neuritis-revisited-a-clinicopathological-study
#5
Navya Jaiswal, Shrijeet Chakraborti, Kashinath Nayak, Shivananda Pai, B P Shelley, Saraswathy Sreeram, K C Rakshith, B V Suresh, Z K Misri, Hansraj Alva, N Shankar
Introduction: Leprosy affecting the nerve solely or with concomitant skin lesions is not an uncommon condition in clinical practice. It is responsible for extensive morbidity and often poses a diagnostic challenge. This study aims to highlight the clinicopathological features of Hansen's neuritis (HN). Materials and Methods: In this retrospective study, cases of histologically diagnosed HN, from January 2010 to July 2017, were reviewed in the light of clinical features, treatment history, and outcome...
January 2018: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/29455410/can-patients-with-symptomatic-tarlov-cysts-be-differentiated-from-patients-with-specific-low-back-pain-based-on-comprehensive-history-taking
#6
Maria Anna Hulens, Wim Dankaerts, Ricky Rasschaert, Frans Bruyninckx, Marie-Laure Willaert, Charlotte Vereecke, Greet Vansant
BACKGROUND: Tarlov cysts (TCs) are expanded nerve root sheaths that occur near the dorsal root ganglion and result from increased intraspinal hydrostatic pressure. TCs most frequently affect the lumbosacral plexus and therefore may cause specific symptoms such as perineal pain and neurogenic bladder, bowel, and sphincter problems. It has been estimated that 1% of the population has symptomatic Tarlov cysts (STCs). However, STCs appear to be underdiagnosed, with the pain reported by patients commonly attributed to degenerative alterations seen on MRI...
February 17, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29455258/effects-of-capsaicin-on-ovarian-granulosa-cell-proliferation-and-apoptosis
#7
Sabire Güler, Berrin Zik
Capsaicin is the pungent ingredient in red peppers. Due to the effects on the sensory nerve fibers, capsaicin has been used to treat pain and inflammation associated with a variety of diseases including rheumatoid arthritis and diabetic neuropathy, obesity, and cardiovascular and gastrointestinal conditions. Despite the extensive publications on different systems, the studies of the effects on the ovary are very limited. The present study was conducted to examine the possible proliferative and/or apoptotic effects of various doses of capsaicin on primarily derived granulosa cells...
February 17, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29455227/the-clinical-features-of-patients-concurrent-with-guillain-barre-syndrome-and-myasthenia-gravis
#8
Junliang Yuan, Juan Zhang, Bingwei Zhang, Wenli Hu
OBJECTIVE: To evaluate all the coincidence cases of Guillain-Barre syndrome (GBS) and myasthenia gravis (MG). METHODS: We performed web-based research of the overlapping incidence of GBS and MG in studies occurring from 1982 to 2016 and restricted to the English language. RESULTS: Among 15 cases, an elevated CSF protein level without pleocytosis was found in 10 cases (66.7%); reduced nerve conduction was found in 13 cases (86.6%); a positive repetitive nerve stimulation test occurred in 11 cases (73...
January 2018: Neurosciences: the Official Journal of the Pan Arab Union of Neurological Sciences
https://www.readbyqxmd.com/read/29454978/ribonucleotide-reductase-as-a-drug-target-against-drug-resistance-mycobacterium-leprae-a-molecular-docking-study
#9
Partha Sarathi Mohanty, Avi Kumar Bansal, Farah Naaz, Umesh Datta Gupta, Vivek Dhar Dwivedi, Umesh Yadava
Leprosy is a chronic infection of skin and nerve caused by Mycobacterium leprae. The treatment is based on standard multi drug therapy consisting of dapsone, rifampicin and clofazamine. The use of rifampicin alone or with dapsone led to the emergence of rifampicin-resistant Mycobacterium leprae strains. The emergence of drug-resistant leprosy put a hurdle in the leprosy eradication programme. The present study aims to predict the molecular model of ribonucleotide reductase (RNR), the enzyme responsible for biosynthesis of nucleotides, to screen new drugs for treatment of drug-resistant leprosy...
February 15, 2018: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29453470/nerve-conduction-and-heart-rate-variability-in-patients-with-hypothyroidism-at-a-tertiary-care-centre-in-eastern-nepal
#10
Shital Gupta, Rita Khadka, Dilip Thakur, Robin Maskey, K D Mehta, B H H Paudel
INTRODUCTION: Thyroid hormone effects on many organs including central and peripheral nervous systems. However, these hormones do not affect all systems/organs to a similar extent. Thus, we conducted this study to explore the effect of thyroid hormones on somatic nervous system assessed by Nerve conduction study and cardiac autonomic activity assessed by heart rate variability. METHODS: The study included newly diagnosed hypothyroid patients and healthy controls...
October 2017: JNMA; Journal of the Nepal Medical Association
https://www.readbyqxmd.com/read/29453349/ultrasound-and-shock-wave-stimulation-to-promote-axonal-regeneration-following-nerve-surgery-a-systematic-review-and-meta-analysis-of-preclinical-studies
#11
Simeon C Daeschler, Leila Harhaus, Philipp Schoenle, Arne Boecker, Ulrich Kneser, Konstantin D Bergmeister
Limited regeneration after nerve injury often leads to delayed or incomplete reinnervation and consequently insufficient muscle function. Following nerve surgery, application of low-intensity ultrasound or extracorporeal shock waves may promote nerve regeneration and improve functional outcomes. Because currently clinical data is unavailable, we performed a meta-analysis following the PRISMA-guidelines to investigate the therapeutic effect of ultrasound and shock wave therapies on motor nerve regeneration. Ten ultrasound-studies (N = 445 rats) and three shock-wave studies (N = 110 rats) were identified from multiple databases...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29452326/awake-microvascular-decompression-for-trigeminal-neuralgia-concept-and-initial-results
#12
Saleem I Abdulrauf, Jorge F Urquiaga, Ritesh Patel, J Andrew Albers, Varun B Sampat, Meghan Baumer, Eric Marvin, Matthew Pierson, Raquel Kragel, Jodi Walsh
OBJECTIVE: The option of performing MVD under awake anesthesia protocol ("awake" MVD) was examined in this initial series to assess whether intraoperative pain evaluation can identify and mitigate insufficient decompression of the trigeminal nerve, improving surgical outcomes. Additionally, "awake" MVD could expand procedure indications for those with comorbidities that would prohibit general endotracheal anesthesia (GEA). METHODS: An IRB-approved prospective study of 10 consecutive adults who underwent MVD for TN was conducted...
February 13, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29447305/pseudo-pedicle-heterotopic-ossification-from-use-of-recombinant-human-bone-morphogenetic-protein-2-rhbmp-2-in-transforaminal-lumbar-interbody-fusion-cages
#13
Charles D Rosen, P Douglas Kiester, Thay Q Lee
We conducted a study to determine the common characteristics of patients who developed radiculopathy symptoms and corresponding heterotopic ossification (HO) from transforaminal lumbar interbody fusions (TLIF) using recombinant human bone morphogenetic protein 2 (rhBMP-2). HO can arise from a disk space with rhBMP-2 use in TLIF. Formation of bone around nerve roots or the thecal sac can cause a radiculopathy with a consistent pattern of symptoms. We identified 38 patients (26 males, 12 females) with a mean (SD) age of 50...
January 2018: American Journal of Orthopedics
https://www.readbyqxmd.com/read/29447059/therapeutic-potential-of-mucuna-pruriens-linn-on-ageing-induced-damage-in-dorsal-nerve-of-the-penis-and-its-implication-on-erectile-function-an-experimental-study-using-albino-rats
#14
Prakash Seppan, Ibrahim Muhammed, Karthik Ganesh Mohanraj, Ganesh Lakshmanan, Dinesh Premavathy, Sakthi Jothi Muthu, Khayinmi Wungmarong Shimray, Sathya Bharathy Sathyanathan
OBJECTIVE: To study the effect of ethanolic seed extract of Mucuna pruriens on damaged dorsal nerve of the penis (DNP) in aged rat in relation to penile erection. METHODS: The rats were divided into four groups Young (3 months), Aged (24 - 28 months), Aged + M. pruriens, and Young + M. pruriens (200 mg/kg b.w/60 days) and were subjected to the hypophysial - gonadal axis, nerve conduction velocity (NCV), and penile reflex. DNP sections were stained with nitric oxide synthase (nNOS), nicotinamide adenine dinucleotide phosphate (NaDPH) diaphorase, androgen receptor (AR), and osmium tetroxide...
February 15, 2018: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/29443416/diabetic-neuropathy-differs-between-type-1-and-type-2-diabetes-insights-from-magnetic-resonance-neurography
#15
Johann M E Jende, Jan B Groener, Dimitrios Oikonomou, Sabine Heiland, Stefan Kopf, Mirko Pham, Peter Nawroth, Martin Bendszus, Felix T Kurz
OBJECTIVE: To visualize and quantify differences of microstructural nerve damage in distal symmetric diabetic neuropathy (DPN) between type 1 diabetes (T1D) and type 2 diabetes (T2D), and to detect correlations between neuropathic symptoms and serological risk factors. METHODS: 3T magnetic resonance neurography of the sciatic nerve was performed in 120 patients (T1D n=35; T2D n=85) with either DPN (n=84) or no DPN (NDPN; n=36). Results were subsequently correlated with clinical, serological, and electrophysiological patient data...
February 14, 2018: Annals of Neurology
https://www.readbyqxmd.com/read/29443415/comprehensive-assessment-of-the-donor-site-of-the-anterolateral-thigh-flap-a-prospective-study-in-33-patients
#16
Shuang Bai, Zhi-Qiang Zhang, Zhi-Qiang Wang, Zhong-Fei Xu, Wei-Yi Duan, Fa-Yu Liu, Xue-Xin Tan, Chang-Fu Sun
BACKGROUND: The anterolateral thigh (ALT) free flap has been an extremely versatile flap. The purpose of this study was to propose comprehensive functional assessments of the donor site. METHODS: A total of 33 ALT flaps were enrolled prospectively. Objective assessments included isokinetic testing of the knee, and electromyographic examination of the lateral femoral cutaneous nerve (LFCN). The Patient and Observer Scar Assessment Scale (POSAS) was used to subjectively assess the donor-site scar...
February 14, 2018: Head & Neck
https://www.readbyqxmd.com/read/29443059/in-vivo-electrophysiological-measurement-of-the-rat-ulnar-nerve-with-axonal-excitability-testing
#17
Brandon M Wild, Renée Morris, Mihai Moldovan, Christian Krarup, Arun V Krishnan, Ria Arnold
Electrophysiology enables the objective assessment of peripheral nerve function in vivo. Traditional nerve conduction measures such as amplitude and latency detect chronic axon loss and demyelination, respectively. Axonal excitability techniques "by threshold tracking" expand upon these measures by providing information regarding the activity of ion channels, pumps and exchangers that relate to acute function and may precede degenerative events. As such, the use of axonal excitability in animal models of neurological disorders may provide a useful in vivo measure to assess novel therapeutic interventions...
February 6, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29438175/effect-of-fascia-penetration-on-sensory-nerve-conduction-in-the-superficial-radial-nerve
#18
Hye Jung Park, Joon Shik Yoon, Won Ihl Rhee, Jea Won Kim, Seung Nam Yang, Sun Jae Won
PURPOSE: The aim of this study was to identify the effects of fascia penetration on superficial radial sensory nerve action potential amplitude. METHODS: The penetration point (PP) at which the nerve penetrated the brachioradialis fascia and became superficial was observed using ultrasonography. The sensory nerve action potential amplitude was measured at five points: the penetration point, 2 and 4 cm proximal to the PP, and 2 and 4 cm distal to the PP. RESULTS: The sensory nerve action potential amplitude at the penetration point and at 2 and 4 cm distal to the PP was significantly larger than that at 2 and 4 cm proximal to the PP...
February 12, 2018: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29435815/nerve-ultrasound-predicts-treatment-response-in-chronic-inflammatory-demyelinating-polyradiculoneuropathy-a-prospective-follow-up
#19
Florian Härtig, Marlene Ross, Nele Maria Dammeier, Nadin Fedtke, Bianka Heiling, Hubertus Axer, Bernhard F Décard, Eva Auffenberg, Marilin Koch, Tim W Rattay, Markus Krumbholz, Antje Bornemann, Holger Lerche, Natalie Winter, Alexander Grimm
As reliable biomarkers of disease activity are lacking, monitoring of therapeutic response in chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) remains a challenge. We sought to determine whether nerve ultrasound and electrophysiology scoring could close this gap. In CIDP patients (fulfilling EFNS/PNS criteria), we performed high-resolution nerve ultrasound to determine ultrasound pattern sum scores (UPSS) and predominant echotexture nerve conduction study scores (NCSS) as well as Medical Research Council sum scores (MRCSS) and inflammatory neuropathy cause and treatment disability scores (INCAT) at baseline and after 12 months of standard treatment...
February 12, 2018: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/29434794/biomechanical-analysis-of-brachial-plexus-injury-availability-of-three-dimensional-finite-element-model-of-the-brachial-plexus
#20
Atsushi Mihara, Tsukasa Kanchiku, Norihiro Nishida, Haruki Tagawa, Junji Ohgi, Hidenori Suzuki, Yasuaki Imajo, Masahiro Funaba, Daisuke Nakashima, Xian Chen, Toshihiko Taguchi
Adult brachial plexus injuries frequently lead to significant and permanent physical disabilities. Investigating the mechanism of the injury using biomechanical approaches may lead to further knowledge with regard to preventing brachial plexus injuries. However, there are no reports of biomechanical studies of brachial plexus injuries till date. Therefore, the present study used a complex three-dimensional finite element model (3D-FEM) of the brachial plexus to analyze the mechanism of brachial plexus injury and to assess the validity of the model...
February 2018: Experimental and Therapeutic Medicine
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