Movement Disorders (revue)

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The Effect of Peripheral Enzyme Inhibitors on Levodopa Concentrations in Blood and CSF

Identifieur interne : 002088 ( PascalFrancis/Curation ); précédent : 002087; suivant : 002089

The Effect of Peripheral Enzyme Inhibitors on Levodopa Concentrations in Blood and CSF

Auteurs : Maria Nord [Suède] ; Peter Zsigmond [Suède] ; Anita Kullman [Suède] ; Kerstin Arstrand [Suède] ; Nil Dizdar [Suède]

Source :

RBID : Pascal:10-0161576

Descripteurs français

English descriptors

Abstract

Levodopa combined with a dopa-decarboxylase inhibitor, such as carbidopa, shifts the metabolism to the COMT pathway. Adding the peripheral acting COMT inhibitor entacapone provides improvement for patients with PD suffering from motor fluctuations. We studied the effects of the enzyme inhibitors entacapone and carbidopa on the levodopa concentrations in CSF and in blood. Five PD patients with wearing-off underwent lumbar drainage and intravenous microdialysis. Samples were taken 12 h daily for 3 days. Day 1; intravenous levodopa was given, day 2; additional oral entacapone 200 mg tid, day 3; additional oral entacapone 200 mg tid and carbidopa 25 mg bid. Levodopa in CSF and in dialysates was analysed. The AUC for levodopa increased both in blood and CSF when additional entacapone was given alone and in combination with carbidopa. The Cmax of levodopa in both CSF and blood increased significantly. Additional entacapone to levodopa therapy gives an increase of Cmax in CSF and in blood. The increase is more evident when entacapone is combined with carbidopa.
pA  
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A03   1    @0 Mov. disord.
A05       @2 25
A06       @2 3
A08 01  1  ENG  @1 The Effect of Peripheral Enzyme Inhibitors on Levodopa Concentrations in Blood and CSF
A11 01  1    @1 NORD (Maria)
A11 02  1    @1 ZSIGMOND (Peter)
A11 03  1    @1 KULLMAN (Anita)
A11 04  1    @1 ARSTRAND (Kerstin)
A11 05  1    @1 DIZDAR (Nil)
A14 01      @1 Department of Neurology, University Hospital @2 Linköping @3 SWE @Z 1 aut. @Z 5 aut.
A14 02      @1 Department of Neurosurgery, University Hospital @2 Linköping @3 SWE @Z 2 aut.
A14 03      @1 Department of Clinical Chemistry, University Hospital @2 Linköping @3 SWE @Z 3 aut. @Z 4 aut. @Z 5 aut.
A20       @1 363-367
A21       @1 2010
A23 01      @0 ENG
A43 01      @1 INIST @2 20953 @5 354000181820230150
A44       @0 0000 @1 © 2010 INIST-CNRS. All rights reserved.
A45       @0 30 ref.
A47 01  1    @0 10-0161576
A60       @1 P
A61       @0 A
A64 01  1    @0 Movement disorders
A66 01      @0 USA
C01 01    ENG  @0 Levodopa combined with a dopa-decarboxylase inhibitor, such as carbidopa, shifts the metabolism to the COMT pathway. Adding the peripheral acting COMT inhibitor entacapone provides improvement for patients with PD suffering from motor fluctuations. We studied the effects of the enzyme inhibitors entacapone and carbidopa on the levodopa concentrations in CSF and in blood. Five PD patients with wearing-off underwent lumbar drainage and intravenous microdialysis. Samples were taken 12 h daily for 3 days. Day 1; intravenous levodopa was given, day 2; additional oral entacapone 200 mg tid, day 3; additional oral entacapone 200 mg tid and carbidopa 25 mg bid. Levodopa in CSF and in dialysates was analysed. The AUC for levodopa increased both in blood and CSF when additional entacapone was given alone and in combination with carbidopa. The Cmax of levodopa in both CSF and blood increased significantly. Additional entacapone to levodopa therapy gives an increase of Cmax in CSF and in blood. The increase is more evident when entacapone is combined with carbidopa.
C02 01  X    @0 002B17
C02 02  X    @0 002B02U01
C03 01  X  FRE  @0 Maladie de Parkinson @2 NM @5 01
C03 01  X  ENG  @0 Parkinson disease @2 NM @5 01
C03 01  X  SPA  @0 Parkinson enfermedad @2 NM @5 01
C03 02  X  FRE  @0 Pathologie du système nerveux @5 02
C03 02  X  ENG  @0 Nervous system diseases @5 02
C03 02  X  SPA  @0 Sistema nervioso patología @5 02
C03 03  X  FRE  @0 Inhibiteur enzyme @5 09
C03 03  X  ENG  @0 Enzyme inhibitor @5 09
C03 03  X  SPA  @0 Inhibidor enzima @5 09
C03 04  X  FRE  @0 Lévodopa @2 NK @2 FR @5 10
C03 04  X  ENG  @0 Levodopa @2 NK @2 FR @5 10
C03 04  X  SPA  @0 Levodopa @2 NK @2 FR @5 10
C03 05  X  FRE  @0 Liquide céphalorachidien @5 11
C03 05  X  ENG  @0 Cerebrospinal fluid @5 11
C03 05  X  SPA  @0 Líquido cefalorraquídeo @5 11
C07 01  X  FRE  @0 Pathologie de l'encéphale @5 37
C07 01  X  ENG  @0 Cerebral disorder @5 37
C07 01  X  SPA  @0 Encéfalo patología @5 37
C07 02  X  FRE  @0 Syndrome extrapyramidal @5 38
C07 02  X  ENG  @0 Extrapyramidal syndrome @5 38
C07 02  X  SPA  @0 Extrapiramidal síndrome @5 38
C07 03  X  FRE  @0 Maladie dégénérative @5 39
C07 03  X  ENG  @0 Degenerative disease @5 39
C07 03  X  SPA  @0 Enfermedad degenerativa @5 39
C07 04  X  FRE  @0 Pathologie du système nerveux central @5 40
C07 04  X  ENG  @0 Central nervous system disease @5 40
C07 04  X  SPA  @0 Sistema nervosio central patología @5 40
N21       @1 102
N44 01      @1 OTO
N82       @1 OTO

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Pascal:10-0161576

Le document en format XML

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<div type="abstract" xml:lang="en">Levodopa combined with a dopa-decarboxylase inhibitor, such as carbidopa, shifts the metabolism to the COMT pathway. Adding the peripheral acting COMT inhibitor entacapone provides improvement for patients with PD suffering from motor fluctuations. We studied the effects of the enzyme inhibitors entacapone and carbidopa on the levodopa concentrations in CSF and in blood. Five PD patients with wearing-off underwent lumbar drainage and intravenous microdialysis. Samples were taken 12 h daily for 3 days. Day 1; intravenous levodopa was given, day 2; additional oral entacapone 200 mg tid, day 3; additional oral entacapone 200 mg tid and carbidopa 25 mg bid. Levodopa in CSF and in dialysates was analysed. The AUC for levodopa increased both in blood and CSF when additional entacapone was given alone and in combination with carbidopa. The C
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