Imaging essential tremor
Identifieur interne : 000686 ( Main/Exploration ); précédent : 000685; suivant : 000687Imaging essential tremor
Auteurs : Ioannis U. Isaias [Italie] ; Giorgio Marotta [Italie] ; Shigeki Hirano [États-Unis] ; Margherita Canesi [Italie] ; Riccardo Benti [Italie] ; Andrea Righini [Italie] ; Chengke Tang [États-Unis] ; Roberto Cilia [Italie] ; Gianni Pezzoli [Italie] ; David Eidelberg [États-Unis] ; Angelo Antonini [Italie]Source :
- Movement Disorders [ 0885-3185 ] ; 2010-04-30.
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Abstract
To investigate over time changes in striatal dopamine transporter (DAT), we performed two sequential N‐ω‐fluoropropyl‐2β‐carbomethoxy‐3β‐(4‐iodophenyl) tropane single photon computed tomography (SPECT) scans in 20 subjects with essential tremor (ET), in 13 with Parkinson disease (PD) and in 23 healthy controls (HC, one scan only). We also performed an [99mTc]ethyl cysteinate dimer bicisate SPECT exam for regional brain network analysis in 9 ET, in a second group of 18 PD (9 with tremor, tPD and 9 akinetic‐rigid dominant, arPD) and in 8 HC. PD subjects had a reduced DAT binding in comparison to ET and HC with an annual decline rate of 7.3% in the contralateral putamen. There were no mean uptake differences between ET and HC at baseline and no uptake loss over time in ET. A discriminant analysis grouped 30% (first scan) and 5% (second scan) of ET as PD and a partition analysis showed overlap between ET and PD for caudate nucleus uptake. Spatial covariance analysis revealed that the expression of the PD‐related regional pattern separated both tPD and arPD from ET and HC. In conclusion, PD and ET do not share a common pattern of dopaminergic loss over time. However, mild impairment of dopamine transporter in the caudate nucleus may contribute to tremor onset in ET. © 2010 Movement Disorder Society
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DOI: 10.1002/mds.22870
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Disord.</title><idno type="ISSN">0885-3185</idno><idno type="eISSN">1531-8257</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2010-04-30">2010-04-30</date><biblScope unit="volume">25</biblScope><biblScope unit="issue">6</biblScope><biblScope unit="page" from="679">679</biblScope><biblScope unit="page" to="686">686</biblScope></imprint><idno type="ISSN">0885-3185</idno></series><idno type="istex">AC44D8A700E6B5BE473639AC4D6BD0C9F7C9A8A9</idno><idno type="DOI">10.1002/mds.22870</idno><idno type="ArticleID">MDS22870</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>SPECT</term><term>essential tremor</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">To investigate over time changes in striatal dopamine transporter (DAT), we performed two sequential N‐ω‐fluoropropyl‐2β‐carbomethoxy‐3β‐(4‐iodophenyl) tropane single photon computed tomography (SPECT) scans in 20 subjects with essential tremor (ET), in 13 with Parkinson disease (PD) and in 23 healthy controls (HC, one scan only). We also performed an [99mTc]ethyl cysteinate dimer bicisate SPECT exam for regional brain network analysis in 9 ET, in a second group of 18 PD (9 with tremor, tPD and 9 akinetic‐rigid dominant, arPD) and in 8 HC. PD subjects had a reduced DAT binding in comparison to ET and HC with an annual decline rate of 7.3% in the contralateral putamen. There were no mean uptake differences between ET and HC at baseline and no uptake loss over time in ET. A discriminant analysis grouped 30% (first scan) and 5% (second scan) of ET as PD and a partition analysis showed overlap between ET and PD for caudate nucleus uptake. Spatial covariance analysis revealed that the expression of the PD‐related regional pattern separated both tPD and arPD from ET and HC. In conclusion, PD and ET do not share a common pattern of dopaminergic loss over time. However, mild impairment of dopamine transporter in the caudate nucleus may contribute to tremor onset in ET. © 2010 Movement Disorder Society</div></front></TEI><affiliations><list><country><li>Italie</li><li>États-Unis</li></country><region><li>État de New York</li></region></list><tree><country name="Italie"><noRegion><name sortKey="Isaias, Ioannis U" sort="Isaias, Ioannis U" uniqKey="Isaias I" first="Ioannis U." last="Isaias">Ioannis U. Isaias</name></noRegion><name sortKey="Antonini, Angelo" sort="Antonini, Angelo" uniqKey="Antonini A" first="Angelo" last="Antonini">Angelo Antonini</name><name sortKey="Antonini, Angelo" sort="Antonini, Angelo" uniqKey="Antonini A" first="Angelo" last="Antonini">Angelo Antonini</name><name sortKey="Benti, Riccardo" sort="Benti, Riccardo" uniqKey="Benti R" first="Riccardo" last="Benti">Riccardo Benti</name><name sortKey="Canesi, Margherita" sort="Canesi, Margherita" uniqKey="Canesi M" first="Margherita" last="Canesi">Margherita Canesi</name><name sortKey="Cilia, Roberto" sort="Cilia, Roberto" uniqKey="Cilia R" first="Roberto" last="Cilia">Roberto Cilia</name><name sortKey="Isaias, Ioannis U" sort="Isaias, Ioannis U" uniqKey="Isaias I" first="Ioannis U." last="Isaias">Ioannis U. Isaias</name><name sortKey="Marotta, Giorgio" sort="Marotta, Giorgio" uniqKey="Marotta G" first="Giorgio" last="Marotta">Giorgio Marotta</name><name sortKey="Pezzoli, Gianni" sort="Pezzoli, Gianni" uniqKey="Pezzoli G" first="Gianni" last="Pezzoli">Gianni Pezzoli</name><name sortKey="Righini, Andrea" sort="Righini, Andrea" uniqKey="Righini A" first="Andrea" last="Righini">Andrea Righini</name></country><country name="États-Unis"><region name="État de New York"><name sortKey="Hirano, Shigeki" sort="Hirano, Shigeki" uniqKey="Hirano S" first="Shigeki" last="Hirano">Shigeki Hirano</name></region><name sortKey="Eidelberg, David" sort="Eidelberg, David" uniqKey="Eidelberg D" first="David" last="Eidelberg">David Eidelberg</name><name sortKey="Eidelberg, David" sort="Eidelberg, David" uniqKey="Eidelberg D" first="David" last="Eidelberg">David Eidelberg</name><name sortKey="Tang, Chengke" sort="Tang, Chengke" uniqKey="Tang C" first="Chengke" last="Tang">Chengke Tang</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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