POSTERIOR HYPOTHALAMIC NUCLEUS DEEP BRAIN STIMULATION RESTORES LOCOMOTION IN RATS WITH HALOPERIDOL-INDUCED AKINESIA BUT NOT SKILLED FORELIMB USE IN PELLET REACHING AND LEVER PRESSING
Identifieur interne : 001928 ( Main/Exploration ); précédent : 001927; suivant : 001929POSTERIOR HYPOTHALAMIC NUCLEUS DEEP BRAIN STIMULATION RESTORES LOCOMOTION IN RATS WITH HALOPERIDOL-INDUCED AKINESIA BUT NOT SKILLED FORELIMB USE IN PELLET REACHING AND LEVER PRESSING
Auteurs : C. K. Young [Canada] ; I. Q. Whishaw [Canada] ; B. H. Bland [Canada]Source :
- Neuroscience [ 0306-4522 ] ; 2011.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Recent studies have shown that electrical stimulation of the posterior hypothalamic nucleus (PH) facilitates locomotion in control rats, and rats were made akinetic by dopaminergic blockade via haloperidol or dopamine depletion by the neurotoxin 6-hydroxydopamine. These findings suggest that PH stimulation might be a promising treatment for akinesia associated with dopamine loss in Parkinson's disease. The present study further examined the positive effects of PH stimulation on behavior by characterizing its potential facilitatory effects on tasks that require skilled movements. Rats were trained to reach for food pellets with a forelimb (skilled reaching) or press a bar in an operant conditioning task for food. PH stimulation in undrugged rats not only facilitated locomotion in each of the tasks, but also impaired performance of the skilled movement components of the tasks. Haloperidol reduced locomotion and skilled movement, and PH stimulation only restored locomotion. The results are discussed in relation to the idea that PH stimulation selectively facilitates locomotor behavior and may have limited use in restoring impairments in skilled movements and consummatory behavior that results from dopaminergic depletion.
Affiliations:
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Whishaw</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Neuroscience, Canadian Centre for Behavioural Neuroscience, University of Lethbridge</s1><s2>Lethbridge, AB</s2><s3>CAN</s3><sZ>2 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Lethbridge, AB</wicri:noRegion></affiliation></author><author><name sortKey="Bland, B H" sort="Bland, B H" uniqKey="Bland B" first="B. H." last="Bland">B. H. 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K." last="Young">C. K. Young</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Behavioural Neuroscience Group, Department of Psychology, Hotchkiss Brain Institute, University of Calgary</s1><s2>Calgary, AB</s2><s3>CAN</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Canada</country><placeName><settlement type="city">Calgary</settlement><region type="state">Alberta</region></placeName><orgName type="university">Université de Calgary</orgName></affiliation></author><author><name sortKey="Whishaw, I Q" sort="Whishaw, I Q" uniqKey="Whishaw I" first="I. Q." last="Whishaw">I. Q. Whishaw</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Neuroscience, Canadian Centre for Behavioural Neuroscience, University of Lethbridge</s1><s2>Lethbridge, AB</s2><s3>CAN</s3><sZ>2 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Lethbridge, AB</wicri:noRegion></affiliation></author><author><name sortKey="Bland, B H" sort="Bland, B H" uniqKey="Bland B" first="B. H." last="Bland">B. H. Bland</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Behavioural Neuroscience Group, Department of Psychology, Hotchkiss Brain Institute, University of Calgary</s1><s2>Calgary, AB</s2><s3>CAN</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Canada</country><placeName><settlement type="city">Calgary</settlement><region type="state">Alberta</region></placeName><orgName type="university">Université de Calgary</orgName></affiliation></author></analytic><series><title level="j" type="main">Neuroscience</title><title level="j" type="abbreviated">Neuroscience</title><idno type="ISSN">0306-4522</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Neuroscience</title><title level="j" type="abbreviated">Neuroscience</title><idno type="ISSN">0306-4522</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Akinesia</term><term>Animal</term><term>Deep brain stimulation</term><term>Forelimb</term><term>Haloperidol</term><term>Hypothalamus</term><term>Locomotion</term><term>Parkinson disease</term><term>Rat</term><term>Upper limb</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Hypothalamus</term><term>Locomotion</term><term>Halopéridol</term><term>Akinésie</term><term>Membre thoracique</term><term>Membre supérieur</term><term>Maladie de Parkinson</term><term>Rat</term><term>Animal</term><term>Stimulation cérébrale profonde</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Recent studies have shown that electrical stimulation of the posterior hypothalamic nucleus (PH) facilitates locomotion in control rats, and rats were made akinetic by dopaminergic blockade via haloperidol or dopamine depletion by the neurotoxin 6-hydroxydopamine. These findings suggest that PH stimulation might be a promising treatment for akinesia associated with dopamine loss in Parkinson's disease. The present study further examined the positive effects of PH stimulation on behavior by characterizing its potential facilitatory effects on tasks that require skilled movements. Rats were trained to reach for food pellets with a forelimb (skilled reaching) or press a bar in an operant conditioning task for food. PH stimulation in undrugged rats not only facilitated locomotion in each of the tasks, but also impaired performance of the skilled movement components of the tasks. Haloperidol reduced locomotion and skilled movement, and PH stimulation only restored locomotion. The results are discussed in relation to the idea that PH stimulation selectively facilitates locomotor behavior and may have limited use in restoring impairments in skilled movements and consummatory behavior that results from dopaminergic depletion.</div></front></TEI><affiliations><list><country><li>Canada</li></country><region><li>Alberta</li></region><settlement><li>Calgary</li></settlement><orgName><li>Université de Calgary</li></orgName></list><tree><country name="Canada"><region name="Alberta"><name sortKey="Young, C K" sort="Young, C K" uniqKey="Young C" first="C. K." last="Young">C. K. Young</name></region><name sortKey="Bland, B H" sort="Bland, B H" uniqKey="Bland B" first="B. H." last="Bland">B. H. Bland</name><name sortKey="Whishaw, I Q" sort="Whishaw, I Q" uniqKey="Whishaw I" first="I. Q." last="Whishaw">I. Q. Whishaw</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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