Movement Disorders (revue)

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Response to levodopa challenge in Tourette syndrome

Identifieur interne : 000209 ( PascalFrancis/Curation ); précédent : 000208; suivant : 000210

Response to levodopa challenge in Tourette syndrome

Auteurs : Kevin J. Black [États-Unis] ; Jonathan W. Mink [États-Unis]

Source :

RBID : Pascal:01-0016456

Descripteurs français

English descriptors

Abstract

A dopaminergic excess has been commonly postulated in the pathophysiology of tics, and an early report described acute worsening of tics with levodopa. However, dopamine agonists sometimes improve tics. We undertook this pilot study to determine whether people with tics could tolerate an acute dose of levodopa. Six adults with Tourette syndrome (TS) who had never been treated with neuroleptics took 150 mg levodopa by mouth under single-blind conditions after carbidopa pretreatment. All six subjects reported a decrease in self-rated tic severity (mean -40%, p <0.05), and three spontaneously asked if they could be prescribed levodopa for chronic treatment. Blinded videotape ratings of motor tic severity improved by 37% (p <0.02). A large, placebo-controlled trial will be required to confirm these findings, which raise important questions concerning the relationship of tic expression to dopaminergic activity.
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A11 02  1    @1 MINK (Jonathan W.)
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C01 01    ENG  @0 A dopaminergic excess has been commonly postulated in the pathophysiology of tics, and an early report described acute worsening of tics with levodopa. However, dopamine agonists sometimes improve tics. We undertook this pilot study to determine whether people with tics could tolerate an acute dose of levodopa. Six adults with Tourette syndrome (TS) who had never been treated with neuroleptics took 150 mg levodopa by mouth under single-blind conditions after carbidopa pretreatment. All six subjects reported a decrease in self-rated tic severity (mean -40%, p <0.05), and three spontaneously asked if they could be prescribed levodopa for chronic treatment. Blinded videotape ratings of motor tic severity improved by 37% (p <0.02). A large, placebo-controlled trial will be required to confirm these findings, which raise important questions concerning the relationship of tic expression to dopaminergic activity.
C02 01  X    @0 002B02B11
C03 01  X  FRE  @0 Gilles de la Tourette syndrome @5 01
C03 01  X  ENG  @0 Gilles de la Tourette syndrome @5 01
C03 01  X  SPA  @0 Gilles de la Tourette síndrome @5 01
C03 02  X  FRE  @0 Lévodopa @5 04
C03 02  X  ENG  @0 Levodopa @5 04
C03 02  X  SPA  @0 Levodopa @5 04
C03 03  X  FRE  @0 Epreuve pharmacologique @5 05
C03 03  X  ENG  @0 Pharmacologic test @5 05
C03 03  X  SPA  @0 Prueba farmacológica @5 05
C03 04  X  FRE  @0 Dose unique @5 06
C03 04  X  ENG  @0 Single dose @5 06
C03 04  X  SPA  @0 Dosis única @5 06
C03 05  X  FRE  @0 Chimiothérapie @5 07
C03 05  X  ENG  @0 Chemotherapy @5 07
C03 05  X  SPA  @0 Quimioterapia @5 07
C03 06  X  FRE  @0 Traitement @5 17
C03 06  X  ENG  @0 Treatment @5 17
C03 06  X  SPA  @0 Tratamiento @5 17
C03 07  X  FRE  @0 Etude cas @5 18
C03 07  X  ENG  @0 Case study @5 18
C03 07  X  SPA  @0 Estudio caso @5 18
C03 08  X  FRE  @0 Adulte @5 20
C03 08  X  ENG  @0 Adult @5 20
C03 08  X  SPA  @0 Adulto @5 20
C07 01  X  FRE  @0 Homme
C07 01  X  ENG  @0 Human
C07 01  X  SPA  @0 Hombre
C07 02  X  FRE  @0 Système nerveux pathologie @5 37
C07 02  X  ENG  @0 Nervous system diseases @5 37
C07 02  X  SPA  @0 Sistema nervioso patología @5 37
C07 03  X  FRE  @0 Système nerveux central pathologie @5 38
C07 03  X  ENG  @0 Central nervous system disease @5 38
C07 03  X  SPA  @0 Sistema nervosio central patología @5 38
C07 04  X  FRE  @0 Encéphale pathologie @5 39
C07 04  X  ENG  @0 Cerebral disorder @5 39
C07 04  X  SPA  @0 Encéfalo patología @5 39
C07 05  X  FRE  @0 Maladie dégénérative @5 40
C07 05  X  ENG  @0 Degenerative disease @5 40
C07 05  X  SPA  @0 Enfermedad degenerativa @5 40
N21       @1 008

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