Idazoxan, an alpha-2 antagonist, and L-DOPA-induced dyskinesias in patients with Parkinson's disease.
Identifieur interne : 000548 ( Ncbi/Checkpoint ); précédent : 000547; suivant : 000549Idazoxan, an alpha-2 antagonist, and L-DOPA-induced dyskinesias in patients with Parkinson's disease.
Auteurs : O. Rascol [France] ; I. Arnulf ; H. Peyro-Saint Paul ; C. Brefel-Courbon ; M. Vidailhet ; C. Thalamas ; A M Bonnet ; S. Descombes ; B. Bejjani ; N. Fabre ; J L Montastruc ; Yves Agid [France]Source :
- Movement disorders : official journal of the Movement Disorder Society [ 0885-3185 ] ; 2001.
English descriptors
- KwdEn :
- Administration, Oral, Adrenergic alpha-Antagonists (adverse effects), Adrenergic alpha-Antagonists (therapeutic use), Aged, Antiparkinson Agents (adverse effects), Antiparkinson Agents (therapeutic use), Dose-Response Relationship, Drug, Dyskinesia, Drug-Induced (drug therapy), Female, Humans, Idazoxan (adverse effects), Idazoxan (therapeutic use), Levodopa (adverse effects), Levodopa (therapeutic use), Male, Middle Aged, Neurologic Examination (drug effects), Parkinson Disease (drug therapy), Pilot Projects.
- MESH :
- chemical , adverse effects : Adrenergic alpha-Antagonists, Antiparkinson Agents, Idazoxan, Levodopa.
- chemical , therapeutic use : Adrenergic alpha-Antagonists, Antiparkinson Agents, Idazoxan, Levodopa.
- drug effects : Neurologic Examination.
- drug therapy : Dyskinesia, Drug-Induced, Parkinson Disease.
- Administration, Oral, Aged, Dose-Response Relationship, Drug, Female, Humans, Male, Middle Aged, Pilot Projects.
Abstract
Dyskinesia is a frequent and disabling side effect in patients with Parkinson's disease treated with chronic dopa-therapy. Preclinical data in the 1-methyl-4-phenyl-1,2,3,6,-tetrahydropyridine (MPTP) monkey suggest that alpha-2 antagonists may reduce dihydroxyphenylalanine (L-DOPA)-induced dyskinesia. We assessed, in a pilot randomised placebo-controlled study, the effects of single oral doses (10 mg, 20 mg, and 40 mg) of idazoxan, an alpha-2 antagonist, on motor parkinsonian disability and L-DOPA-induced dyskinesia following an acute oral challenge of L-DOPA in 18 patients with Parkinson's disease. The severity of L-DOPA-induced dyskinesia improved after 20 mg idazoxan pretreatment, while there was no concommittant deterioration in the antiparkinsonian response to L-DOPA. These results suggest that blocking alpha-2 receptors in patients with Parkinson's disease might improve L-DOPA-induced dyskinesia without the cost of a return of parkinsonian symptomatology. Further studies are required to assess whether this property could have potential therapeutic applications in the long-term management of dyskinetic patients with Parkinson's disease.
PubMed: 11481696
Affiliations:
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pubmed:11481696Le document en format XML
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Arnulf</name></author><author><name sortKey="Peyro Saint Paul, H" sort="Peyro Saint Paul, H" uniqKey="Peyro Saint Paul H" first="H" last="Peyro-Saint Paul">H. Peyro-Saint Paul</name></author><author><name sortKey="Brefel Courbon, C" sort="Brefel Courbon, C" uniqKey="Brefel Courbon C" first="C" last="Brefel-Courbon">C. Brefel-Courbon</name></author><author><name sortKey="Vidailhet, M" sort="Vidailhet, M" uniqKey="Vidailhet M" first="M" last="Vidailhet">M. Vidailhet</name></author><author><name sortKey="Thalamas, C" sort="Thalamas, C" uniqKey="Thalamas C" first="C" last="Thalamas">C. Thalamas</name></author><author><name sortKey="Bonnet, A M" sort="Bonnet, A M" uniqKey="Bonnet A" first="A M" last="Bonnet">A M Bonnet</name></author><author><name sortKey="Descombes, S" sort="Descombes, S" uniqKey="Descombes S" first="S" last="Descombes">S. Descombes</name></author><author><name sortKey="Bejjani, B" sort="Bejjani, B" uniqKey="Bejjani B" first="B" last="Bejjani">B. 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Rascol</name><affiliation wicri:level="1"><nlm:affiliation>Department of Clinical Pharmacology, Clinical Investigation Centre and INSERM U455, University Hospital, Toulouse, France. rascol@cict.fr</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Department of Clinical Pharmacology, Clinical Investigation Centre and INSERM U455, University Hospital, Toulouse</wicri:regionArea><placeName><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Arnulf, I" sort="Arnulf, I" uniqKey="Arnulf I" first="I" last="Arnulf">I. Arnulf</name></author><author><name sortKey="Peyro Saint Paul, H" sort="Peyro Saint Paul, H" uniqKey="Peyro Saint Paul H" first="H" last="Peyro-Saint Paul">H. Peyro-Saint Paul</name></author><author><name sortKey="Brefel Courbon, C" sort="Brefel Courbon, C" uniqKey="Brefel Courbon C" first="C" last="Brefel-Courbon">C. Brefel-Courbon</name></author><author><name sortKey="Vidailhet, M" sort="Vidailhet, M" uniqKey="Vidailhet M" first="M" last="Vidailhet">M. Vidailhet</name></author><author><name sortKey="Thalamas, C" sort="Thalamas, C" uniqKey="Thalamas C" first="C" last="Thalamas">C. Thalamas</name></author><author><name sortKey="Bonnet, A M" sort="Bonnet, A M" uniqKey="Bonnet A" first="A M" last="Bonnet">A M Bonnet</name></author><author><name sortKey="Descombes, S" sort="Descombes, S" uniqKey="Descombes S" first="S" last="Descombes">S. Descombes</name></author><author><name sortKey="Bejjani, B" sort="Bejjani, B" uniqKey="Bejjani B" first="B" last="Bejjani">B. Bejjani</name></author><author><name sortKey="Fabre, N" sort="Fabre, N" uniqKey="Fabre N" first="N" last="Fabre">N. Fabre</name></author><author><name sortKey="Montastruc, J L" sort="Montastruc, J L" uniqKey="Montastruc J" first="J L" last="Montastruc">J L Montastruc</name></author><author><name sortKey="Agid, Y" sort="Agid, Y" uniqKey="Agid Y" first="Y" last="Agid">Yves Agid</name><affiliation><country>France</country><placeName><settlement type="city">Paris</settlement><region type="region" nuts="2">Île-de-France</region></placeName><orgName type="hospital" n="4">Hôpital de la Salpêtrière</orgName></affiliation></author></analytic><series><title level="j">Movement disorders : official journal of the Movement Disorder Society</title><idno type="ISSN">0885-3185</idno><imprint><date when="2001" type="published">2001</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Administration, Oral</term><term>Adrenergic alpha-Antagonists (adverse effects)</term><term>Adrenergic alpha-Antagonists (therapeutic use)</term><term>Aged</term><term>Antiparkinson Agents (adverse effects)</term><term>Antiparkinson Agents (therapeutic use)</term><term>Dose-Response Relationship, Drug</term><term>Dyskinesia, Drug-Induced (drug therapy)</term><term>Female</term><term>Humans</term><term>Idazoxan (adverse effects)</term><term>Idazoxan (therapeutic use)</term><term>Levodopa (adverse effects)</term><term>Levodopa (therapeutic use)</term><term>Male</term><term>Middle Aged</term><term>Neurologic Examination (drug effects)</term><term>Parkinson Disease (drug therapy)</term><term>Pilot Projects</term></keywords><keywords scheme="MESH" type="chemical" qualifier="adverse effects" xml:lang="en"><term>Adrenergic alpha-Antagonists</term><term>Antiparkinson Agents</term><term>Idazoxan</term><term>Levodopa</term></keywords><keywords scheme="MESH" type="chemical" qualifier="therapeutic use" xml:lang="en"><term>Adrenergic alpha-Antagonists</term><term>Antiparkinson Agents</term><term>Idazoxan</term><term>Levodopa</term></keywords><keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Neurologic Examination</term></keywords><keywords scheme="MESH" qualifier="drug therapy" xml:lang="en"><term>Dyskinesia, Drug-Induced</term><term>Parkinson Disease</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Administration, Oral</term><term>Aged</term><term>Dose-Response Relationship, Drug</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Pilot Projects</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Dyskinesia is a frequent and disabling side effect in patients with Parkinson's disease treated with chronic dopa-therapy. Preclinical data in the 1-methyl-4-phenyl-1,2,3,6,-tetrahydropyridine (MPTP) monkey suggest that alpha-2 antagonists may reduce dihydroxyphenylalanine (L-DOPA)-induced dyskinesia. We assessed, in a pilot randomised placebo-controlled study, the effects of single oral doses (10 mg, 20 mg, and 40 mg) of idazoxan, an alpha-2 antagonist, on motor parkinsonian disability and L-DOPA-induced dyskinesia following an acute oral challenge of L-DOPA in 18 patients with Parkinson's disease. The severity of L-DOPA-induced dyskinesia improved after 20 mg idazoxan pretreatment, while there was no concommittant deterioration in the antiparkinsonian response to L-DOPA. These results suggest that blocking alpha-2 receptors in patients with Parkinson's disease might improve L-DOPA-induced dyskinesia without the cost of a return of parkinsonian symptomatology. Further studies are required to assess whether this property could have potential therapeutic applications in the long-term management of dyskinetic patients with Parkinson's disease.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Île-de-France</li></region><settlement><li>Paris</li><li>Toulouse</li></settlement><orgName><li>Hôpital de la Salpêtrière</li></orgName></list><tree><noCountry><name sortKey="Arnulf, I" sort="Arnulf, I" uniqKey="Arnulf I" first="I" last="Arnulf">I. Arnulf</name><name sortKey="Bejjani, B" sort="Bejjani, B" uniqKey="Bejjani B" first="B" last="Bejjani">B. Bejjani</name><name sortKey="Bonnet, A M" sort="Bonnet, A M" uniqKey="Bonnet A" first="A M" last="Bonnet">A M Bonnet</name><name sortKey="Brefel Courbon, C" sort="Brefel Courbon, C" uniqKey="Brefel Courbon C" first="C" last="Brefel-Courbon">C. Brefel-Courbon</name><name sortKey="Descombes, S" sort="Descombes, S" uniqKey="Descombes S" first="S" last="Descombes">S. Descombes</name><name sortKey="Fabre, N" sort="Fabre, N" uniqKey="Fabre N" first="N" last="Fabre">N. Fabre</name><name sortKey="Montastruc, J L" sort="Montastruc, J L" uniqKey="Montastruc J" first="J L" last="Montastruc">J L Montastruc</name><name sortKey="Peyro Saint Paul, H" sort="Peyro Saint Paul, H" uniqKey="Peyro Saint Paul H" first="H" last="Peyro-Saint Paul">H. Peyro-Saint Paul</name><name sortKey="Thalamas, C" sort="Thalamas, C" uniqKey="Thalamas C" first="C" last="Thalamas">C. Thalamas</name><name sortKey="Vidailhet, M" sort="Vidailhet, M" uniqKey="Vidailhet M" first="M" last="Vidailhet">M. Vidailhet</name></noCountry><country name="France"><noRegion><name sortKey="Rascol, O" sort="Rascol, O" uniqKey="Rascol O" first="O" last="Rascol">O. Rascol</name></noRegion><name sortKey="Agid, Y" sort="Agid, Y" uniqKey="Agid Y" first="Y" last="Agid">Yves Agid</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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