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https://www.readbyqxmd.com/read/29026428/evaluation-of-the-physiological-activity-of-venom-from-the-eurasian-water-shrew-neomys-fodiens
#1
Krzysztof Kowalski, Paweł Marciniak, Grzegorz Rosiński, Leszek Rychlik
BACKGROUND: Animal toxins can have medical and therapeutic applications. Principally, toxins produced by insects, arachnids, snakes and frogs have been characterized. Venomous mammals are rare, and their venoms have not been comprehensively investigated. Among shrews, only the venom of Blarina brevicauda has been analysed so far, and blarina toxin has been proven to be its main toxic component. It is assumed that Neomys fodiens employs its venom to hunt larger prey. However, the toxic profile, properties and mode of action of its venom are largely unknown...
2017: Frontiers in Zoology
https://www.readbyqxmd.com/read/29023304/association-of-insulin-and-cholesterol-levels-with-peripheral-nervous-system-function-in-overweight-adults-a-3-year-follow-up
#2
Henri Isojärvi, Sirkka Keinänen-Kiukaanniemi, Mika Kallio, Kaisu Kaikkonen, Timo Jämsä, Juha Korpelainen, Raija Korpelainen
PURPOSE: The purpose of this prospective 3-year follow-up was to investigate the association of glucose, insulin, and cholesterol levels with peripheral nervous system function in overweight and obese subjects. METHODS: Forty nondiabetic overweight and obese adults were enrolled, of whom 29 completed the follow-up. Peripheral nervous system function was measured and defined by conduction studies of the peroneal motor nerve and the radial, sural, and medial plantar sensory nerves...
October 10, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28987902/comparison-of-ultrasonography-and-short-segment-nerve-conduction-study-in-ulnar-neuropathy-at-the-elbow
#3
Rana Terlemez, Figen Yilmaz, Beril Dogu, Banu Kuran
OBJECTIVE: We aimed to assess the correlation between ultrasonographic and electrodiagnostic findings to determine the localization of the ulnar trapping at the elbow. DESIGN AND SETTING: A cross-sectional and non-interventional trial was conducted in patients diagnosed as ulnar nerve entrapment in physical medicine and rehabilitation department of a teaching hospital. PARTICIPANTS: Between January 2017 and April 2017, 14 patients diagnosed as ulnar nerve entrapment (UNE) with short segment nerve conduction study were enrolled...
October 5, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28970182/pathophysiological-profiles-of-sdt-fatty-rats-a-potential-new-diabetic-peripheral-neuropathy-model
#4
Tatsuya Maekawa, Hironobu Tadaki, Tomohiko Sasase, Yu Motohashi, Katsuhiro Miyajima, Takeshi Ohta, Shinichi Kume
INTRODUCTION: To establish an animal model for diabetic peripheral neuropathy (DPN) at an earlier stage, we performed functional and pathophysiological evaluations in Spontaneously Diabetic Torii (SDT) fatty rats before 16weeks of age. METHODS: Male SDT fatty rats were treated with vehicle or phlorizin (100 to 150mg/kg/day) from 5 to 16weeks. Sprague-Dawley (SD) rats were used as age-matched controls. Body weights and biochemical parameters were measured over time...
September 29, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28964153/mechanism-underlying-impaired-cardiac-pacemaking-rhythm-during-ischemia-a-simulation-study
#5
Xiangyun Bai, Kuanquan Wang, Yongfeng Yuan, Qince Li, Halina Dobrzynski, Mark R Boyett, Jules C Hancox, Henggui Zhang
Ischemia in the heart impairs function of the cardiac pacemaker, the sinoatrial node (SAN). However, the ionic mechanisms underlying the ischemia-induced dysfunction of the SAN remain elusive. In order to investigate the ionic mechanisms by which ischemia causes SAN dysfunction, action potential models of rabbit SAN and atrial cells were modified to incorporate extant experimental data of ischemia-induced changes to membrane ion channels and intracellular ion homeostasis. The cell models were incorporated into an anatomically detailed 2D model of the intact SAN-atrium...
September 2017: Chaos
https://www.readbyqxmd.com/read/28956306/evolution-of-clinical-electrophysiological-and-radiological-aspects-of-the-carpal-tunnel-syndrome-before-and-after-surgery
#6
Karine Pedersen, Vincent Duez, Bernard Stallenberg, Nicolas Mavroudakis
The aim of the study was to analyze the evolution of the clinical, electrophysiological, and ultrasound aspects of carpal tunnel syndrome (CTS) before and 4 and 8 weeks after surgery. A Boston Carpal Tunnel Questionnaire, an ultrasound scan, and an electrophysiological exam were performed in 14 patients the day of surgery, 4 and 8 weeks after. The nerve conduction study included: median nerve sensory conduction stimulating digit 3 and 4, median motor conduction from the abductor pollicis brevis, ulnar nerve sensory, and motor conduction...
September 27, 2017: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/28954306/prostaglandin-e1-protects-the-peripheral-nerve-in-diabetics-through-preventing-vascular-permeability-changes
#7
Feifei Mo, Guotao Hu, Wei Liu, Li He, Hailan Wang
Objective The aims of this study were to investigate the effects of the vasodilator prostaglandin E1 on microvascular permeability, the expression of vascular endothelial growth factor (VEGF), as well as the structural and functional changes of the peripheral nerve in diabetic rats. Methods Streptozotocin-induced diabetes mellitus were randomly divided into two groups and intraperitoneally received, once daily, an injection of prostaglandin E1 at 1.6 μg/kg in normal saline or the same volume of normal saline (diabetic control), respectively...
September 27, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28951357/-effect-of-electroacupuncture-on-proprioception-in-cynomolgus-monkeys-after-unilateral-anterior-cruciate-ligament-injury
#8
Lei Zhang, Yi-Kai Li, Ji Qi, Shao-Qun Zhang, Rui-Yue Ping, Xin Zhou, Lin Yu, Rui-Feng Liu, Shi-Jie Fu
OBJECTIVE: To study the effect of electroacupuncture on proprioception in cynomolgus monkeys after unilateral anterior cruciate ligament (ACL) injury. METHODS: Twenty-seven cynomolgus monkeys were randomized equally into 3 groups, namely unilateral ACL injury with electroacupuncture group, unilateral ACL injury model group and blank control group. One week after modeling, the monkeys in electroacupuncture group were treated daily for 12 weeks with electroacupuncture at the acupoints Wei Yang, Yin Gu, Xi Yangguan and Qu Quan...
September 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28946515/effects-of-biofeedback-versus-switch-triggered-functional-electrical-stimulation-on-sciatica-related-foot-drop
#9
Dragos Petrica Sardaru, Daniela Matei, Dan Zaharia-Kezdi, Liviu Pendefunda
BACKGROUND: Sciatica-related Foot Drop is a peripheral nervous condition that produces a loss of power in the ankle dorsiflexion muscles. Functional electrical stimulation is a modality of electrical stimulation that produces muscle contraction in a functional movement of the limb. This technique was utilized with positive effects in central nervous afflictions but it is not known whether or not it has any influence in motor recovery following peripheral nervous system problems. This study aims to clarify the effects of functional electrical stimulation on foot drop caused by peripheral nerve compression resulting from lumbar disc herniation...
September 8, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28944943/effect-of-systemic-application-of-bone-marrow-derived-mesenchymal-stem-cells-on-healing-of-peripheral-nerve-injury-in-an-experimental-sciatic-nerve-injury-model
#10
Zahir Kizilay, Serdar Aktas, Nesibe Kahraman Cetin, Didem Bakay Ilhan, Gulfem Ersoy, Haydar Ali Erken
AIM: To investigate the effects of systemic application of bone marrow-derived mesenchymal stem cells in a compression model of peripheral nerve injury. MATERIAL AND METHODS: 24 male Wistar albino rats were randomly divided into 3 equal groups (n=8):Control (C),injury (I),and stem cell and injury (SI).The sciatic nerve of rats in the I and SI groups was subjected to clip compression for 5 minutes.Moreover,approximately 5x105 bone marrow-derived mesenchymal stem cells were given via tail vein of the rats in the SI group immediately after clip compression...
July 12, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28936077/normative-data-for-median-nerve-conduction-in-healthy-young-adults-from-punjab-india
#11
Manjinder Singh, Sharat Gupta, Kamal Dev Singh, Avnish Kumar
BACKGROUND: Nerve conduction studies (NCSs) are essential for diagnosing various kinds of focal and diffuse neuropathies. Due to the paucity of local NCS data, electrodiagnostic laboratories in Punjab rely on values from Western and other Indian studies. AIM: This study was conducted to provide normative data for median nerve conduction parameters (motor and sensory) in Punjabi populace. MATERIALS AND METHODS: A cross-sectional study was done on 290 participants (150 males and 140 females), aged 17-21 years, as per standardized protocol...
August 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28934355/study-of-myelin-structure-changes-during-the-nerve-fibers-demyelination
#12
Natalia N Rodionova, Elvin S Allakhverdiev, Georgy V Maksimov
Raman, NMR and EPR spectroscopy and electrophysiology methods were used to investigate the excitability and the packaging of myelin lipid layers and its viscosity during nerve exposure to pronase E. It was established that during exposure of nerve to pronase E the action potential (AP) conduction velocity and the Schwann cell (SC) (or myelin) water ordering increases, but the nerve myelin refractive index and internode incisions numbers decrease. This effect included two periods-short- and long-time period, probably, because the first one depends on SC protein changes and the second one-on the nerve fiber internode demyelination...
2017: PloS One
https://www.readbyqxmd.com/read/28932551/electro-physiological-evidence-of-intercostal-nerve-injury-after-thoracotomy-an-experimental-study-in-a-sheep-model
#13
Ruoyu Zhang, Kerstin Schwabe, Marcus Krüger, Axel Haverich, Joachim K Krauss, Mesbah Alam
BACKGROUND: Although intercostal nerve injury is one of the major causes for post-thoracotomy pain, the exact mechanisms are still unclear. We sought to evaluate the electro-physiological changes of intercostal nerve injury after thoracotomy in a sheep model. METHODS: Adult sheep underwent thoracotomy in the sixth intercostal space by employing diathermy to superior border of the seventh rib. In two sheep, ribs were then spread using retractor spreading for a distance of 7 cm for 30 minutes...
August 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28929513/association-between-hba1c-and-peripheral-neuropathy-in-a-10-year-follow-up-study-of-people-with-normal-glucose-tolerance-impaired-glucose-tolerance-and-type-2-diabetes
#14
M Peterson, R Pingel, N Lagali, L B Dahlin, O Rolandsson
AIMS: To explore the association between HbA1c and sural nerve function in a group of people with normal glucose tolerance, impaired glucose tolerance or Type 2 diabetes. METHODS: We conducted a 10-year follow-up study in 87 out of an original 119 participants. At study commencement (2004), 64 men and 55 women (mean age 61.1 years) with normal glucose tolerance (n=39), impaired glucose tolerance (n=29), or Type 2 diabetes (n=51) were enrolled. At the 2014 follow-up (men, n=46, women, n=41; mean age 71...
September 20, 2017: Diabetic Medicine: a Journal of the British Diabetic Association
https://www.readbyqxmd.com/read/28925753/ozone-partially-decreases-axonal-and-myelin-damage-in-an-experimental-sciatic-nerve-injury-model
#15
Zahir Kızılay, Nesibe Kahraman Çetin, Mehran Aksel, Burçin İrem Abas, Serdar Aktaş, Haydar Ali Erken, Abdullah Topçu, Ali Yılmaz, Cigdem Yenisey
AIM: To investigate the effects of ozone in experimental acute sciatic nerve injury. MATERIAL AND METHODS: Twenty-eight male rats were divided into four groups (n = 7): control (C), ozone (O), injury (SNI), and treatment with ozone after injury (SNI + Ozone). Sciatic nerve injury was generated by compressing the right sciatic nerve for 90 s using a Yasargil aneurysm clip in groups SNI and SNI + Ozone. A 70 µg/ml concentration of ozone was given four times (once a day at 1st, 24th, 48th, and 72th h) at a dose of 0...
September 19, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28914658/are-the-sensory-fibers-of-the-ulnar-nerve-affected-in-carpal-tunnel-syndrome
#16
Özgür Selek, Murat Alemdar
PURPOSE: Distribution of paresthesia throughout the skin area without median nerve innervation is frequently seen in carpal tunnel syndrome (CTS). However, its pathophysiologic mechanisms are still unclear. We aimed to research whether a dysfunction in sensory fibers of the ulnar nerve (UN) was present or not in hands with CTS. METHODS: Totally, upper extremity nerve conduction study recordings of 508 patients were considered. After exclusions, 331 upper extremity recordings of 277 patients were included...
September 12, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28899883/microrna-146a-mimics-reduce-the-peripheral-neuropathy-in-type-ii-diabetic-mice
#17
Xian Shuang Liu, Baoyan Fan, Alexandra Szalad, Longfei Jia, Lei Wang, Xinli Wang, Wanlong Pan, Li Zhang, Ruilan Zhang, Jiani Hu, Xiao Ming Zhang, Michael Chopp, Zheng Gang Zhang
MicroRNA-146a (miR-146a) regulates multiple immune diseases. However, the role of miR-146a in diabetic peripheral neuropathy (DPN) has not been investigated. We found that mice (db/db) with type II diabetes exhibited substantial down-regulation of miR-146a in sciatic nerve tissue. Systemic administration of miR-146a mimics to diabetic mice elevated miR-146a levels in plasma and sciatic nerve tissue and substantially increased motor and sensory nerve conduction velocities by 29% and 11%, respectively, and regional blood flow by 50% in sciatic nerve tissue...
September 12, 2017: Diabetes
https://www.readbyqxmd.com/read/28895622/sciatic-nerve-conductivity-is-impaired-by-hamstring-strain-injuries
#18
Karina Kouzaki, Koichi Nakazato, Masuhiko Mizuno, Tooru Yonechi, Yusuke Higo, Yoshiaki Kubo, Tokuyoshi Kono, Kenji Hiranuma
The aim of this study was to assess sciatic nerve conductivity in athletes with a history of hamstring strain injuries. Twenty-seven athletes with a history of hamstring strain injuries were included in the injured group. The control group consisted of 16 uninjured participants. We measured the proximal and distal latencies and calculated the sciatic nerve conduction velocity to evaluate neuronal conductivity. The results were expressed as median values and interquartile ranges. Both proximal latency and distal latency of the injured limb in the injured group were significantly longer than those of the uninjured limb (p<0...
October 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28882470/an-observational-study-of-vitamin-b12-levels-and-peripheral-neuropathy-profile-in-patients-of-diabetes-mellitus-on-metformin-therapy
#19
Kamesh Gupta, Anand Jain, Anurag Rohatgi
METHODS: A descriptive, observational study was completed in a tertiary care hospital between November 2014 and March 2016. Fifty consecutive patients of Type 2-Diabetes Mellitus who had been on metformin therapy for at least three months were included in our study. Several Parameters were compared with vitamin B12 levels and severity of peripheral neuropathy (using Toronto Clinical Scoring System (TCSS) and Nerve Conduction Velocity). These included the duration of diabetes, duration of metformin usage, dietary history, and HbA1c levels...
August 25, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28879887/characteristics-of-nerve-conduction-studies-in-carpal-tunnel-syndrome
#20
Parag P Moon, Dilip Maheshwari, Vijay Sardana, Bharat Bhushan, Sankalp Mohan
BACKGROUND: Numerous nerve conduction tests are used for the electrodiagnosis of carpal tunnel syndrome (CTS), with a wide range of sensitivity and specificity reported for each test in clinical studies. AIMS: The purpose of this study was to compare the diagnostic accuracy of various nerve conduction tests and determine the properties of the most accurate test. SETTINGS AND DESIGN: A prospective observational case control study. PATIENTS AND METHODS: Eighty patients with clinically confirmed CTS and 80 asymptomatic healthy controls were included in the study...
September 2017: Neurology India
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