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Sma Fiber Neuropathy

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https://www.readbyqxmd.com/read/29257770/is-burning-mouth-syndrome-a-neuropathic-pain-condition
#1
Satu K Jääskeläinen
Primary burning mouth syndrome (BMS) is defined as an "intraoral burning or dysaesthetic sensation, recurring daily… more than 3 months, without clinically evident causative lesions" (IHS 2013). In addition to pain, taste alterations are frequent (dysgeusia, xerostomia). Although lacking clinical signs of neuropathy, more accurate diagnostic methods have shown neuropathic involvement at various levels of the neuraxis in BMS: peripheral small fiber damage (thermal quantitative sensory testing, electrogustatometry, epithelial nerve fiber density), trigeminal system lesions in the periphery or the brainstem (brainstem reflex recordings, trigeminal neurography, evoked potentials), or signs of decreased inhibition within the central nervous system (deficient brainstem reflex habituation, positive signs in quantitative sensory testing, neurotransmitter-positron emission tomography findings indicative of deficient striatal dopamine function)...
March 2018: Pain
https://www.readbyqxmd.com/read/20297628/-usefulness-of-electromyography-in-diagnostics-of-the-neuro-muscular-diseases
#2
Sławomir Kroczka, Małgorzata Steczkowska, Marek Kaciński
INTRODUCTION: Electrophysiological examinations still play an important role in initial diagnostics of neuromuscular disorders and monitoring of the disease progress or recovery process. AIM OF THE STUDY: Evaluation of neurophysiological examinations usefulness in differential diagnosis, indicating diagnostic and/or therapeutic management in patients with suspicion of neuromuscular disorders. MATERIAL AND METHODS: 109 patients were included, hospitalized at Department of Pediatric Neurology Jagiellonian University and treated at Neuromuscular, Neurologic, Orthopedic and Rehabilitation Outpatient Clinics of the Children's Hospital in Krakow...
2009: Przegla̧d Lekarski
https://www.readbyqxmd.com/read/18337101/a-patient-with-both-charcot-marie-tooth-disease-cmt-1a-and-mild-spinal-muscular-atrophy-sma-3
#3
Maria Jedrzejowska, Barbara Ryniewicz, Dagmara Kabzińska, Hanna Drac, Irena Hausmanowa-Petrusewicz, Andrzej Kochański
In the present study, we report a single Polish SMA family in which the 17p11.2-p12 duplication causative for the Charcot-Marie-Tooth type 1A disease (CMT1A) was found in addition to a deletion of exons 7 and 8 of the SMN1 gene. A patient harboring both SMA and CMT1A mutations manifested with SMA3 phenotype and foot deformity. Her electrophysiological testing showed chronic neurogenic changes in proximal muscles that are typical for SMA, but also slowed conduction velocity in motor and sensory fibers that is typical for demyelinating neuropathy...
April 2008: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/14506069/severe-infantile-neuropathy-with-diaphragmatic-weakness-and-its-relationship-to-smard1
#4
Matthew Pitt, Henry Houlden, Jean Jacobs, Quen Mok, Brian Harding, Mary Reilly, Robert Surtees
A group of 13 patients with early onset diaphragmatic palsy in association with a progressive neuropathy is presented. All eight of those tested were found to have mutations in the same gene encoding the immunoglobulin mu-binding protein 2 (IGHMBP2) in patients with spinal muscular atrophy (SMA) with respiratory distress type 1. Six out of these eight patients had either homozygous or compound heterozygous mutations, and two had only a single heterozygous mutation. Detailed analysis of the clinical picture and the neurophysiological and histopathological findings indicated that these patients shared similar characteristics, which were further developed as a set of diagnostic criteria...
December 2003: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/12654964/classical-infantile-spinal-muscular-atrophy-with-smn-deficiency-causes-sensory-neuronopathy
#5
S Rudnik-Schöneborn, H H Goebel, W Schlote, S Molaian, H Omran, U Ketelsen, R Korinthenberg, D Wenzel, H Lauffer, M Kreiss-Nachtsheim, B Wirth, K Zerres
OBJECTIVE: Classic infantile spinal muscular atrophy (SMA) is believed to be a purely motor disorder, affecting neurons of the spinal anterior horn and nuclei of the lower cranial nerves. Other organ malformations or peripheral nerve involvement have been regarded as exclusion criteria for infantile SMA. Whether SMN protein deficiency can also lead to loss of sensory neurons has not been systematically addressed. METHODS: The authors evaluated the sural nerve biopsies of 19 patients with infantile SMA of varying severity...
March 25, 2003: Neurology
https://www.readbyqxmd.com/read/9701481/axonal-neuropathy-and-predominance-of-type-ii-myofibers-in-infantile-spinal-muscular-atrophy
#6
H Omran, U P Ketelsen, F Heinen, M Sauer, S Rudnik-Schöneborn, B Wirth, K Zerres, W Kratzer, R Korinthenberg
Two affected siblings with infantile spinal muscular atrophy (SMA I) presented with generalized muscular hypotonia, which progressed to early death. Quadriceps muscle biopsy did not show the typical neurogenic pattern of spinal muscular atrophy. The histochemical fiber type determination revealed a predominance of type II fibers without type I hypertrophy, an unprecedented finding in spinal muscular atrophy. Sural nerve biopsy exhibited findings typical for axonal neuropathy. In one patient, electrical stimulation of peripheral nerves showed an inexcitability of motor and sensory nerves...
July 1998: Journal of Child Neurology
https://www.readbyqxmd.com/read/9034368/apoptosis-related-proteins-in-skeletal-muscle-fibers-of-spinal-muscular-atrophy
#7
D S Tews, H H Goebel
There is evidence that apoptosis in spinal muscular atrophies (SMA) is not restricted to motor neurons but also affects muscle fibers. Studying the expression of several apoptosis-associated proteins we found constant expression of bax in muscle fibers, which promoted cell death. The expression of bax correlated with defective innervation of muscle fibers was also indicated by upregulation of N-CAM. While in early-onset SMA atrophic as well as normo- and hypertrophic muscle fibers displayed expression of bax, muscle fibers in late-onset SMA and peripheral neuropathies showed bax-expression only in atrophic fibers...
February 1997: Journal of Neuropathology and Experimental Neurology
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