The duration of the motor response to apomorphine boluses is conditioned by the length of a prior infusion in Parkinson's disease
Identifieur interne : 002025 ( Main/Exploration ); précédent : 002024; suivant : 002026The duration of the motor response to apomorphine boluses is conditioned by the length of a prior infusion in Parkinson's disease
Auteurs : Julia Vaamonde [Espagne] ; José M. Flores [Espagne] ; Roberto Weisser [Espagne] ; Ram N Iba Ez [Espagne] ; José A. Obeso [Espagne]Source :
- Movement Disorders [ 0885-3185 ] ; 2009-04-15.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
- Apomorphine (administration & dosage), Complication, Dopamine Agonists (administration & dosage), Drug Administration Schedule, Humans, Motor Activity (drug effects), Nervous system diseases, Parkinson Disease (drug therapy), Parkinson Disease (physiopathology), Parkinson disease, Severity of Illness Index, Time Factors, Tolerance, apomorphine boluses, apomorphine infusion, motor complications, pharmacological tolerance.
- MESH :
- chemical , administration & dosage : Apomorphine, Dopamine Agonists.
- drug effects : Motor Activity.
- drug therapy : Parkinson Disease.
- physiopathology : Parkinson Disease.
- Drug Administration Schedule, Humans, Severity of Illness Index, Time Factors.
Abstract
“Pulsatile” administration of levodopa has been invocated a relevant factor for motor fluctuations in Parkinson's disease (PD). We studied dopaminergic sensitivity to apomorphine in 10 parkinsonian patients with motor fluctuations. Patients were tested as follows: the minimal effective dose of apomorphine (MED‐1) was administered in the morning to induce an on response. Fifteen minutes after this motor response had disappeared, an apomorphine infusion was initiated and maintained to ensure on periods of three different durations on different days. Infusion lasted for ∼30, 60 and 90 minutes. Subsequently, the infusion was stopped, and after 15 minutes in the off state, a second bolus of apomorphine (MED‐2) was given. The mean infusion doses were 49.2 ± 5.4, 108.4 ± 10.3, and 150 ± 8.2 mg. These elicited on periods of 48.2 ± 4.1, 110 ± 4.5, and 195 ± 3.8 minutes. The MED‐2 elicited on responses with a duration of 30 ± 4.5, 18.4 ± 3.2, and 11.2 ± 4.1 minutes. The duration of the on response induced by the apomorphine infusions correlated inversely (P < 0.01) with the on induced by the MED‐2 of apomorphine. Our findings indicate that a continuous dopaminergic stimulus may induce pharmacodynamic changes associated with tolerance in PD patients. © 2009 Movement Disorder Society
Url:
DOI: 10.1002/mds.22234
Affiliations:
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Our findings indicate that a continuous dopaminergic stimulus may induce pharmacodynamic changes associated with tolerance in PD patients. © 2009 Movement Disorder Society</div></front></TEI><affiliations><list><country><li>Espagne</li></country></list><tree><country name="Espagne"><noRegion><name sortKey="Vaamonde, Julia" sort="Vaamonde, Julia" uniqKey="Vaamonde J" first="Julia" last="Vaamonde">Julia Vaamonde</name></noRegion><name sortKey="Flores, Jose M" sort="Flores, Jose M" uniqKey="Flores J" first="José M." last="Flores">José M. Flores</name><name sortKey="Iba Ez, Ram N" sort="Iba Ez, Ram N" uniqKey="Iba Ez R" first="Ram N" last="Iba Ez">Ram N Iba Ez</name><name sortKey="Obeso, Jose A" sort="Obeso, Jose A" uniqKey="Obeso J" first="José A." last="Obeso">José A. Obeso</name><name sortKey="Weisser, Roberto" sort="Weisser, Roberto" uniqKey="Weisser R" first="Roberto" last="Weisser">Roberto Weisser</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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