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https://www.readbyqxmd.com/read/28922287/pregabalin-toxicity-manifesting-as-reversible-encephalopathy-with-continuous-triphasic-waves-in-electroencephalogram
#1
Mihir Parekh, Gopal Krishna Dash, Isthiaque Ahamed
A 74-year-old man with peripheral neuropathy due to diabetes presented with deliberate ingestion of 450 mg of pregabalin (PBG) over a period of 8 hours followed by altered mental status. A bedside electroencephalogram was performed to rule out nonconvulsive status epilepticus, which showed continuous triphasic waves (TWs) with slow background activity. He recovered after 48 hours of stopping PBG, and his repeat electroencephalogram after 72 hours did not show any TWs. We present a rare case of PBG-induced TWs thereby highlighting the extent of the etiologic spectrum of TWs and discussing the literature related to this association...
September 2017: Clinical Neuropharmacology
https://www.readbyqxmd.com/read/28921928/inverted-formins-a-sub-family-of-atypical-formins
#2
REVIEW
Anna Hegsted, Curtis V Yingling, David Pruyne
Formins are a family of regulators of actin and microtubule dynamics that are present in almost all eukaryotes. These proteins are involved in many cellular processes, including cytokinesis, stress fiber formation, and cell polarization. Here we review one sub-family of formins, the inverted formins. Inverted formins as a group break several formin stereotypes, having atypical biochemical properties and domain organization, and they have been linked to kidney disease and neuropathy in humans. In this review, we will explore recent research on members of the inverted formin sub-family in mammals, zebrafish, fruit flies, and worms...
September 16, 2017: Cytoskeleton
https://www.readbyqxmd.com/read/28921506/neurologic-injury-and-patient-displacement-in-gynecologic-laparoscopic-surgery-using-a-beanbag-and-shoulder-supports
#3
Alejandro D Treszezamsky, Suzanne Fenske, Erin L Moshier, Charles J Ascher-Walsh
OBJECTIVE: To quantify the incidence of peripheral neuropathy in gynecologic laparoscopic surgery using a combination of beanbag, eggcrate foam, and shoulder supports; and to assess patient displacement during surgery in a steep Trendelenburg position and determine variables correlated with displacement. METHODS: A retrospective study included all gynecologic laparoscopic surgeries performed by one high-volume surgeon at a US center between September 15, 2007, and September 15, 2012...
September 16, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28920433/fluorotryptophan-incorporation-modulates-the-structure-and-stability-of-transthyretin-in-a-site-specific-manner
#4
Xun Sun, H Jane Dyson, Peter E Wright
Abnormal deposition of aggregated wild-type (WT) human transthyretin (TTR) and its pathogenic variants is responsible for cardiomyopathy and neuropathy related to TTR amyloidosis. The tryptophan (Trp) fluorescence measurements typically used to study structural changes of TTR do not yield site-specific information on the two Trp residues per TTR protomer. To obtain such information, tryptophan labeled with fluorine at the 5 and 6 positions (5FW and 6FW) was incorporated into TTR. Fluorescence of 5FW and 6FW-labeled WT-TTR (WT-5FW and WT-6FW) and a single-Trp mutant W41Y showed that the photophysics of incorporated fluoro-Trp is consistent with site-specific solvation of the indole ring of W41 and W79...
September 18, 2017: Biochemistry
https://www.readbyqxmd.com/read/28920110/painful-neuropathy-caused-by-compression-of-the-inferior-alveolar-nerve-by-focal-osteosclerotic-lesion-of-the-mandible-a-case-report
#5
David Debevc, Tomaž Hitij, Andrej Kansky
Osteosclerotic lesions are a common finding on dental radiographs. They are considered developmental variants of a normal bone architecture and they usually do not need any treatment. The purpose of this article is to present a rare case of osteosclerotic lesion of the mandible causing trigeminal neuropathy by compression of the alveolar nerve. The pain started with dental hypersensitivity of the mandibular right first molar. Later on, signs of irreversible molar tooth pulpitis developed. Endodontic therapy and apicoectomy did not resolve the pain, which later intensified, and painful neuropathy localized to inferior alveolar nerve developed; therefore, surgical decompression was indicated...
2017: Quintessence International
https://www.readbyqxmd.com/read/28919803/empirical-validation-of-the-horowitz-multiple-systemic-infectious-disease-syndrome-questionnaire-for-suspected-lyme-disease
#6
Maryalice Citera, Phyllis R Freeman, Richard I Horowitz
PURPOSE: Lyme disease is spreading worldwide, with multiple Borrelia species causing a broad range of clinical symptoms that mimic other illnesses. A validated Lyme disease screening questionnaire would be clinically useful for both providers and patients. Three studies evaluated such a screening tool, namely the Horowitz Multiple Systemic Infectious Disease Syndrome (MSIDS) Questionnaire. The purpose was to see if the questionnaire could accurately distinguish between Lyme patients and healthy individuals...
2017: International Journal of General Medicine
https://www.readbyqxmd.com/read/28916318/matrix-metalloproteinases-2-and-9-in-campylobacter-jejuni-induced-paralytic-neuropathy-resembling-guillain-barr%C3%A3-syndrome-in-chickens
#7
Kishan Kumar Nyati, Kashi Nath Prasad, Vinita Agrawal, Nuzhat Husain
Inflammation in Guillain-Barré syndrome (GBS) is manifested by changes in matrix metalloproteinase (MMP) and pro-inflammatory cytokine expression. We investigated the expression of MMP-2, -9 and TNF-α and correlated it with pathological changes in sciatic nerve tissue from Campylobacter jejuni-induced chicken model for GBS. Campylobacter jejuni and placebo were fed to chickens and assessed for disease symptoms. Sciatic nerves were examined by histopathology and immunohistochemistry. Expressions of MMPs and TNF-α, were determined by real-time PCR, and activities of MMPs by zymography...
September 12, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28915983/single-treatment-with-capsaicin-8-patch-may-reduce-pain-and-sleep-interference-up-to-12-weeks-in-patients-with-painful-diabetic-peripheral-neuropathy
#8
Daniel A Ostrovsky
No abstract text is available yet for this article.
September 2017: Explore: the Journal of Science and Healing
https://www.readbyqxmd.com/read/28915853/low-threshold-unmyelinated-mechanoafferents-can-modulate-pain
#9
Kathrin Habig, Anne Schänzer, Wolfgang Schirner, Gothje Lautenschläger, Benjamin Dassinger, Håkan Olausson, Frank Birklein, Elke R Gizewski, Heidrun H Krämer
BACKGROUND: Human, hairy skin contains a subgroup of C-fibers, the C-low threshold mechanoreceptive afferents ((C-LTMR) C-tactile or C-touch (CT) fibers) that are linked with the signaling of affective aspects of human touch. Recent studies suggest an involvement of these afferents in the modulation of pain in healthy volunteers. Small fiber neuropathy (SFN) is associated with a damage of C-fibers. Therefore, an impairment of C-LTMRs can be assumed. We aimed to elaborate a possible role of CT-afferents in pain modulation by investigating healthy volunteers and SFN-patients...
September 15, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28915428/compression-neuropathy-of-the-common-peroneal-nerve-caused-by-an-intraosseous-ganglion-cyst-of-fibula
#10
Adnan Kara, Sercan Yalçın, Haluk Çelik, Ersin Kuyucu, Ali Şeker
We present a case of a compression neuropathy of the common peroneal nerve caused by an intraosseous Ganglion cyst of fibula.
September 8, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28914883/cidp-and-other-inflammatory-neuropathies-in-diabetes-diagnosis-and-management
#11
REVIEW
Yusuf A Rajabally, Mark Stettner, Bernd C Kieseier, Hans-Peter Hartung, Rayaz A Malik
Distal symmetric polyneuropathy (DSPN) is the most common neuropathy to occur in diabetes mellitus. However, patients with diabetes can also develop inflammatory neuropathies, the most common and most treatable of which is chronic inflammatory demyelinating polyradiculoneuropathy (CIDP). Whether diabetes is a risk factor for CIDP remains under debate. Early studies suggested that patients with diabetes were at increased risk of CIDP, but epidemiological studies failed to confirm the association, and subsequent data have re-opened the debate...
September 15, 2017: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/28913777/diabetes-and-the-small-intestine
#12
REVIEW
Jonathan Gotfried, Stephen Priest, Ron Schey
Diabetes mellitus (DM) and its associated complications are becoming increasingly prevalent. Gastrointestinal symptoms associated with diabetes is known as diabetic enteropathy (DE) and may manifest as either diarrhea, fecal incontinence, constipation, dyspepsia, nausea, and vomiting or a combination of symptoms. The long-held belief that vagal autonomic neuropathy is the primary cause of DE has recently been challenged by newer theories of disease development. Specifically, hyperglycemia and the resulting oxidative stress on neural networks, including the nitrergic neurons and interstitial cells of Cajal (ICC), are now believed to play a central role in the development of DE...
September 15, 2017: Current Treatment Options in Gastroenterology
https://www.readbyqxmd.com/read/28913607/diabetes-and-the-esophagus
#13
REVIEW
Roberto Monreal-Robles, José M Remes-Troche
Chronic hyperglycemia is a well-known cause of gastrointestinal motility disorders extending from the esophagus to the anorectum. Even though little attention has been paid to esophageal disorders in the context of DM, its prevalence is higher compared to gastroparesis. Heartburn, as a typical symptom of gastroesophageal reflux disease (GERD), is the most prevalent symptom and has been found in 25 to 41% of patients with DM. Furthermore, DM has recently been established as possible independent factor for the development of Barrett's esophagus...
September 15, 2017: Current Treatment Options in Gastroenterology
https://www.readbyqxmd.com/read/28913308/new-treatment-in-facial-nerve-palsy-caused-by-sagittal-split-ramus-osteotomy-of-mandible
#14
Jin Hoon Lee, Kyung Ah Lee
A 25-years-old woman with mandibular prognathism underwent a mandibular setback by way of mandibular sagittal split ramus osteotomy (MSSRO). After 2 days of operation, she developed difficulty of closing her right eye. The blink reflex test and motor nerve conduction study of the right orbicularis oris muscle were revealed right facial neuropathy of unknown origin and House-Brackmann facial nerve grading system (HBFNGS) grade V. For treatment, we initially prescribed oral prednisolone and nimodipine including physical therapy...
March 2017: Arch Craniofac Surg
https://www.readbyqxmd.com/read/28912683/nano-scale-biophysical-and-structural-investigations-on-intact-and-neuropathic-nerve-fibers-by-simultaneous-combination-of-atomic-force-and-confocal-microscopy
#15
Gonzalo Rosso, Ivan Liashkovich, Peter Young, Victor Shahin
The links between neuropathies of the peripheral nervous system (PNS), including Charcot-Marie-Tooth1A and hereditary neuropathy with liability to pressure palsies, and impaired biomechanical and structural integrity of PNS nerves remain poorly understood despite the medical urgency. Here, we present a protocol describing simultaneous structural and biomechanical integrity investigations on isolated nerve fibers, the building blocks of nerves. Nerve fibers are prepared from nerves harvested from wild-type and exemplary PNS neuropathy mouse models...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28912677/reversible-axonal-dystrophy-by-calcium-modulation-in-frataxin-deficient-sensory-neurons-of-yg8r-mice
#16
Belén Mollá, Diana C Muñoz-Lasso, Fátima Riveiro, Arantxa Bolinches-Amorós, Federico V Pallardó, Angel Fernandez-Vilata, María de la Iglesia-Vaya, Francesc Palau, Pilar Gonzalez-Cabo
Friedreich's ataxia (FRDA) is a peripheral neuropathy involving a loss of proprioceptive sensory neurons. Studies of biopsies from patients suggest that axonal dysfunction precedes the death of proprioceptive neurons in a dying-back process. We observed that the deficiency of frataxin in sensory neurons of dorsal root ganglia (DRG) of the YG8R mouse model causes the formation of axonal spheroids which retain dysfunctional mitochondria, shows alterations in the cytoskeleton and it produces impairment of axonal transport and autophagic flux...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28912674/a-mechanistic-understanding-of-axon-degeneration-in-chemotherapy-induced-peripheral-neuropathy
#17
REVIEW
Yusuke Fukuda, Yihang Li, Rosalind A Segal
Chemotherapeutic agents cause many short and long term toxic side effects to peripheral nervous system (PNS) that drastically alter quality of life. Chemotherapy-induced peripheral neuropathy (CIPN) is a common and enduring disorder caused by several anti-neoplastic agents. CIPN typically presents with neuropathic pain, numbness of distal extremities, and/or oversensitivity to thermal or mechanical stimuli. This adverse side effect often requires a reduction in chemotherapy dosage or even discontinuation of treatment...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28912514/retinal-changes-following-rapid-ascent-to-a-high-altitude-environment
#18
X Tian, B Zhang, Y Jia, C Wang, Q Li
PurposeTo determine what impact rapid ascension to a high-altitude environment has on the retina with the aim of preventing and treating high-altitude oculopathy.Patients and methodsParticipants in the study were members of the Chinese military assigned to the high-altitude environment of the Tibetan plateau. Ninety-one participants were enrolled in the study. Optical coherence tomography was used to measure the thickness of retina-related indicators. Measurements were taken before and after exposure to the high-altitude environment and upon return to the baseline altitude...
September 15, 2017: Eye
https://www.readbyqxmd.com/read/28912156/neutrophils-are-critical-for-myelin-removal-in-a-peripheral-nerve-injury-model-of-wallerian-degeneration
#19
Jane A Lindborg, Matthias Mack, Richard E Zigmond
Wallerian degeneration (WD) is considered an essential preparatory stage to the process of axonal regeneration. In the peripheral nervous system, infiltrating monocyte-derived macrophages that utilize the chemokine receptor CCR2 to gain entry to injured tissues from the bloodstream, are purportedly necessary for efficient WD. However, our lab has previously reported that myelin clearance in the injured sciatic nerve proceeds unhindered in the Ccr2(-/-) mouse model. Here, we extensively characterize WD in male Ccr2(-/-) mice and identify a compensatory mechanism of WD that is facilitated primarily by neutrophils...
September 14, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28911826/immunoproteasome-selective-and-non-selective-inhibitors-a-promising-approach-for-the-treatment-of-multiple-myeloma
#20
REVIEW
Roberta Ettari, Maria Zappalà, Silvana Grasso, Caterina Musolino, Vanessa Innao, Alessandro Allegra
The ubiquitin-proteasome system (UPS) is the major non-lysosomal proteolytic system for the degradation of abnormal or damaged proteins no longer required. The proteasome is involved in degradation of numerous proteins which regulate the cell cycle, indicating a role in controlling cell proliferation and maintaining cell survival. Defects in the UPS can lead to anarchic cell proliferation and to tumor development. For these reasons UPS inhibition has become a significant new strategy for drug development in cancer treatment...
September 11, 2017: Pharmacology & Therapeutics
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