Involuntary painful muscle contractions in satoyoshi syndrome : A surface electromyographic study
Identifieur interne : 004B40 ( Main/Merge ); précédent : 004B39; suivant : 004B41Involuntary painful muscle contractions in satoyoshi syndrome : A surface electromyographic study
Auteurs : Gea Drost [Pays-Bas] ; Aad Verrips [Pays-Bas] ; Baziel G. M. Van Engelen [Pays-Bas] ; Dick F. Stegeman [Pays-Bas] ; Machiel J. Zwarts [Pays-Bas]Source :
- Movement disorders [ 0885-3185 ] ; 2006.
Descripteurs français
- Pascal (Inist)
English descriptors
Abstract
We report a child with Satoyoshi syndrome manifested by involuntary painful muscle contractions and alopecia. Although an autoimmune origin of Satoyoshi syndrome seems likely, its exact etiology remains as yet unknown, as is the origin of the involuntary contractions. To gain a better understanding of the electrophysiological characteristics of the involuntary contractions, we performed a surface electromyographic (EMG) study. We investigated muscle contractions in the legs using two noninvasive techniques: high-density surface EMG (HD-sEMG) recordings on one muscle, and polymyographic surface EMG (sEMG) recordings on various muscles. During the involuntary contractions, HD-sEMG showed a fourfold increase in amplitude compared to maximal voluntary contractions. These high potentials were widely distributed across the whole muscle and showed a pronounced oscillatory behavior with a frequency around 45 Hz. Polymyographic sEMG revealed that the involuntary contractions often occur simultaneously in various muscles or showed a switch of activity from one muscle to another. These findings point to hyperactivity or a disinhibition at the alpha motor neuron level, originating probably at that level, although a central origin cannot be excluded.
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M." last="Van Engelen">Baziel G. M. Van Engelen</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Neuromuscular Centre Nijmegen, Institute of Neurology, Radboud University Nijmegen Medical Centre</s1><s2>Nijmegen</s2><s3>NLD</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Pays-Bas</country><placeName><settlement type="city">Nimègue</settlement><region type="province" nuts="2">Gueldre</region></placeName></affiliation></author><author><name sortKey="Stegeman, Dick F" sort="Stegeman, Dick F" uniqKey="Stegeman D" first="Dick F." last="Stegeman">Dick F. Stegeman</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Department of Clinical Neurophysiology, Institute of Neurology, Radboud University Nijmegen Medical Centre</s1><s2>Nijmegen</s2><s3>NLD</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Pays-Bas</country><placeName><settlement type="city">Nimègue</settlement><region type="province" nuts="2">Gueldre</region></placeName></affiliation><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Neuromuscular Centre Nijmegen, Institute of Neurology, Radboud University Nijmegen Medical Centre</s1><s2>Nijmegen</s2><s3>NLD</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Pays-Bas</country><placeName><settlement type="city">Nimègue</settlement><region type="province" nuts="2">Gueldre</region></placeName></affiliation></author><author><name sortKey="Zwarts, Machiel J" sort="Zwarts, Machiel J" uniqKey="Zwarts M" first="Machiel J." last="Zwarts">Machiel J. Zwarts</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Department of Clinical Neurophysiology, Institute of Neurology, Radboud University Nijmegen Medical Centre</s1><s2>Nijmegen</s2><s3>NLD</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Pays-Bas</country><placeName><settlement type="city">Nimègue</settlement><region type="province" nuts="2">Gueldre</region></placeName></affiliation><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Neuromuscular Centre Nijmegen, Institute of Neurology, Radboud University Nijmegen Medical Centre</s1><s2>Nijmegen</s2><s3>NLD</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Pays-Bas</country><placeName><settlement type="city">Nimègue</settlement><region type="province" nuts="2">Gueldre</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Movement disorders</title><title level="j" type="abbreviated">Mov. disord.</title><idno type="ISSN">0885-3185</idno><imprint><date when="2006">2006</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Movement disorders</title><title level="j" type="abbreviated">Mov. disord.</title><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Electromyography</term><term>Muscle contraction</term><term>Nervous system diseases</term><term>Pain</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Système nerveux pathologie</term><term>Douleur</term><term>Contraction musculaire</term><term>Electromyographie</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We report a child with Satoyoshi syndrome manifested by involuntary painful muscle contractions and alopecia. Although an autoimmune origin of Satoyoshi syndrome seems likely, its exact etiology remains as yet unknown, as is the origin of the involuntary contractions. To gain a better understanding of the electrophysiological characteristics of the involuntary contractions, we performed a surface electromyographic (EMG) study. We investigated muscle contractions in the legs using two noninvasive techniques: high-density surface EMG (HD-sEMG) recordings on one muscle, and polymyographic surface EMG (sEMG) recordings on various muscles. During the involuntary contractions, HD-sEMG showed a fourfold increase in amplitude compared to maximal voluntary contractions. These high potentials were widely distributed across the whole muscle and showed a pronounced oscillatory behavior with a frequency around 45 Hz. Polymyographic sEMG revealed that the involuntary contractions often occur simultaneously in various muscles or showed a switch of activity from one muscle to another. These findings point to hyperactivity or a disinhibition at the alpha motor neuron level, originating probably at that level, although a central origin cannot be excluded.</div></front></TEI><affiliations><list><country><li>Pays-Bas</li></country><region><li>Gueldre</li></region><settlement><li>Nimègue</li></settlement></list><tree><country name="Pays-Bas"><region name="Gueldre"><name sortKey="Drost, Gea" sort="Drost, Gea" uniqKey="Drost G" first="Gea" last="Drost">Gea Drost</name></region><name sortKey="Drost, Gea" sort="Drost, Gea" uniqKey="Drost G" first="Gea" last="Drost">Gea Drost</name><name sortKey="Stegeman, Dick F" sort="Stegeman, Dick F" uniqKey="Stegeman D" first="Dick F." last="Stegeman">Dick F. Stegeman</name><name sortKey="Stegeman, Dick F" sort="Stegeman, Dick F" uniqKey="Stegeman D" first="Dick F." last="Stegeman">Dick F. Stegeman</name><name sortKey="Van Engelen, Baziel G M" sort="Van Engelen, Baziel G M" uniqKey="Van Engelen B" first="Baziel G. M." last="Van Engelen">Baziel G. M. Van Engelen</name><name sortKey="Verrips, Aad" sort="Verrips, Aad" uniqKey="Verrips A" first="Aad" last="Verrips">Aad Verrips</name><name sortKey="Zwarts, Machiel J" sort="Zwarts, Machiel J" uniqKey="Zwarts M" first="Machiel J." last="Zwarts">Machiel J. Zwarts</name><name sortKey="Zwarts, Machiel J" sort="Zwarts, Machiel J" uniqKey="Zwarts M" first="Machiel J." last="Zwarts">Machiel J. Zwarts</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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