Mechanisms and therapeutic implications of the placebo effect in neurological and psychiatric conditions
Identifieur interne : 001059 ( Main/Exploration ); précédent : 001058; suivant : 001060Mechanisms and therapeutic implications of the placebo effect in neurological and psychiatric conditions
Auteurs : Danielle Murray [Canada] ; A. Jon Stoessl [Canada]Source :
- Pharmacology & therapeutics : (Oxford) [ 0163-7258 ] ; 2013.
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- Pascal (Inist)
English descriptors
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Abstract
The power of a placebo to effect clinically meaningful neurobiological change comparable to pharmacological therapies has been demonstrated, although the mechanisms are not fully understood. Predicting placebo responsiveness has only recently received more attention, but psychological disposition, contextual and biological factors are now known to dramatically affect a person's susceptibility to the placebo effect. The placebo effect depends upon expectancies that can be modified in a number of ways, including conditioning through explicit or implicit learned associations. Based on the dopaminergic response to anticipation of benefit in Parkinson's disease, it was suggested that the placebo effect can be seen as analogous to the expectation of reward. Dopaminergic pathways have since been implicated in the placebo response in pain and depression. Additionally, endogenous opioid release is known to mediate many forms of placebo analgesia. We provide an overview of the mechanisms and the therapeutic implications of the placebo effect in neurological and psychiatric conditions. We include evidence for detrimental effects arising from seemingly inert interventions, termed the 'nocebo effect.' Neuroimaging has critically advanced the study of the placebo effect and provides some of the strongest evidence for the mechanisms of this phenomenon prevalent across an array of human health-related circumstances. This review specifically focuses on mechanisms of the placebo effect in the three conditions that have most significantly demonstrated this effect and for which a plausible physiological basis can be identified: pain, PD and depression. Other neurological and psychiatric diseases reviewed include multiple sclerosis, Huntington's disease, Alzheimer's disease, schizophrenia and epilepsy.
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Jon Stoessl</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Pacific Parkinson's Research Centre and Department of Medicine, Division of Neurology, University of British Columbia & Vancouver Coastal Health</s1><s3>CAN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Pacific Parkinson's Research Centre and Department of Medicine, Division of Neurology, University of British Columbia & Vancouver Coastal Health</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">13-0354510</idno><date when="2013">2013</date><idno type="stanalyst">PASCAL 13-0354510 INIST</idno><idno type="RBID">Pascal:13-0354510</idno><idno type="wicri:Area/PascalFrancis/Corpus">000063</idno><idno type="stanalyst">FRANCIS 13-0354510 INIST</idno><idno type="wicri:Area/PascalFrancis/Corpus">000132</idno><idno type="wicri:Area/PascalFrancis/Curation">000B70</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000068</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000068</idno><idno type="wicri:doubleKey">0163-7258:2013:Murray D:mechanisms:and:therapeutic</idno><idno type="wicri:Area/Main/Merge">001075</idno><idno type="wicri:Area/Main/Curation">001059</idno><idno type="wicri:Area/Main/Exploration">001059</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Mechanisms and therapeutic implications of the placebo effect in neurological and psychiatric conditions</title><author><name sortKey="Murray, Danielle" sort="Murray, Danielle" uniqKey="Murray D" first="Danielle" last="Murray">Danielle Murray</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Pacific Parkinson's Research Centre and Department of Medicine, Division of Neurology, University of British Columbia & Vancouver Coastal Health</s1><s3>CAN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Pacific Parkinson's Research Centre and Department of Medicine, Division of Neurology, University of British Columbia & Vancouver Coastal Health</wicri:noRegion></affiliation></author><author><name sortKey="Stoessl, A Jon" sort="Stoessl, A Jon" uniqKey="Stoessl A" first="A. Jon" last="Stoessl">A. Jon Stoessl</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Pacific Parkinson's Research Centre and Department of Medicine, Division of Neurology, University of British Columbia & Vancouver Coastal Health</s1><s3>CAN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Pacific Parkinson's Research Centre and Department of Medicine, Division of Neurology, University of British Columbia & Vancouver Coastal Health</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Pharmacology & therapeutics : (Oxford)</title><title level="j" type="abbreviated">Pharmacol. ther. : (Oxf.)</title><idno type="ISSN">0163-7258</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Pharmacology & therapeutics : (Oxford)</title><title level="j" type="abbreviated">Pharmacol. ther. : (Oxf.)</title><idno type="ISSN">0163-7258</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Depression</term><term>Mechanism of action</term><term>Nervous system</term><term>Pain</term><term>Parkinson disease</term><term>Placebo effect</term><term>Treatment</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Mécanisme action</term><term>Traitement</term><term>Effet placebo</term><term>Système nerveux</term><term>Maladie de Parkinson</term><term>Douleur</term><term>Etat dépressif</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The power of a placebo to effect clinically meaningful neurobiological change comparable to pharmacological therapies has been demonstrated, although the mechanisms are not fully understood. Predicting placebo responsiveness has only recently received more attention, but psychological disposition, contextual and biological factors are now known to dramatically affect a person's susceptibility to the placebo effect. The placebo effect depends upon expectancies that can be modified in a number of ways, including conditioning through explicit or implicit learned associations. Based on the dopaminergic response to anticipation of benefit in Parkinson's disease, it was suggested that the placebo effect can be seen as analogous to the expectation of reward. Dopaminergic pathways have since been implicated in the placebo response in pain and depression. Additionally, endogenous opioid release is known to mediate many forms of placebo analgesia. We provide an overview of the mechanisms and the therapeutic implications of the placebo effect in neurological and psychiatric conditions. We include evidence for detrimental effects arising from seemingly inert interventions, termed the 'nocebo effect.' Neuroimaging has critically advanced the study of the placebo effect and provides some of the strongest evidence for the mechanisms of this phenomenon prevalent across an array of human health-related circumstances. This review specifically focuses on mechanisms of the placebo effect in the three conditions that have most significantly demonstrated this effect and for which a plausible physiological basis can be identified: pain, PD and depression. Other neurological and psychiatric diseases reviewed include multiple sclerosis, Huntington's disease, Alzheimer's disease, schizophrenia and epilepsy.</div></front></TEI><affiliations><list><country><li>Canada</li></country></list><tree><country name="Canada"><noRegion><name sortKey="Murray, Danielle" sort="Murray, Danielle" uniqKey="Murray D" first="Danielle" last="Murray">Danielle Murray</name></noRegion><name sortKey="Stoessl, A Jon" sort="Stoessl, A Jon" uniqKey="Stoessl A" first="A. Jon" last="Stoessl">A. Jon Stoessl</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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