Longitudinal fluorodopa positron emission tomographic studies of the evolution of idiopathic parkinsonism.
Identifieur interne : 002442 ( Ncbi/Checkpoint ); précédent : 002441; suivant : 002443Longitudinal fluorodopa positron emission tomographic studies of the evolution of idiopathic parkinsonism.
Auteurs : F J Vingerhoets [Canada] ; B J Snow ; C S Lee ; M. Schulzer ; E. Mak ; D B CalneSource :
- Annals of neurology [ 0364-5134 ] ; 1994.
English descriptors
- KwdEn :
- MESH :
- chemical , analogs & derivatives : Dihydroxyphenylalanine.
- diagnostic imaging : Parkinson Disease, Substantia Nigra.
- methods : Tomography, Emission-Computed.
- Adult, Aged, Disease Progression, Female, Humans, Male, Middle Aged.
Abstract
Previous estimates of the rate of progression of the nigral pathology underlying idiopathic parkinsonism (IP) have been derived mainly from pathological studies that have an inherent selection bias. Fluorodopa positron emission tomography (PET) is a reliable tool for assessing nigrostriatal dopaminergic function in vivo. We performed fluorodopa PET on two occasions, 7 years apart, on 16 patients with IP (age at the time of the first scan, 51 +/- 14 yr [mean +/- SD]) and 10 normal controls (age, 54 +/- 16 yr). For the patients with IP, the average duration of symptoms from the time of diagnosis to the first scan was 4.5 years (range, 1-12 yr); their PET index (striatal-occipital)/occipital ratio, dropped by 1.7% per year, from 0.49 +/- 0.08 to 0.43 +/- 0.08 (p < 0.001). The normals' ratio decreased by 0.3% per year from 0.77 +/- 0.05 to 0.75 +/- 0.10 (p = 0.33). The ratios in the IP group progressed significantly faster than the controls (p = 0.036). The rate of decline in IP represents 7.8% per decade, expressed as a fraction of the normals' initial mean value at 54 years of age. These results also permit power analysis for the design of future studies assessing the effect of treatment on the underlying pathology in IP.
DOI: 10.1002/ana.410360512
PubMed: 7979222
Affiliations:
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Schulzer</name></author><author><name sortKey="Mak, E" sort="Mak, E" uniqKey="Mak E" first="E" last="Mak">E. Mak</name></author><author><name sortKey="Calne, D B" sort="Calne, D B" uniqKey="Calne D" first="D B" last="Calne">D B Calne</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="1994">1994</date><idno type="RBID">pubmed:7979222</idno><idno type="pmid">7979222</idno><idno type="doi">10.1002/ana.410360512</idno><idno type="wicri:Area/PubMed/Corpus">001943</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">001943</idno><idno type="wicri:Area/PubMed/Curation">001943</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">001943</idno><idno type="wicri:Area/PubMed/Checkpoint">001943</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">001943</idno><idno type="wicri:Area/Ncbi/Merge">002442</idno><idno type="wicri:Area/Ncbi/Curation">002442</idno><idno type="wicri:Area/Ncbi/Checkpoint">002442</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Longitudinal fluorodopa positron emission tomographic studies of the evolution of idiopathic parkinsonism.</title><author><name sortKey="Vingerhoets, F J" sort="Vingerhoets, F J" uniqKey="Vingerhoets F" first="F J" last="Vingerhoets">F J Vingerhoets</name><affiliation wicri:level="1"><nlm:affiliation>Neurodegenerative Disorders Centre, University Hospital, University of British Columbia, Vancouver, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Neurodegenerative Disorders Centre, University Hospital, University of British Columbia, Vancouver</wicri:regionArea><wicri:noRegion>Vancouver</wicri:noRegion></affiliation></author><author><name sortKey="Snow, B J" sort="Snow, B J" uniqKey="Snow B" first="B J" last="Snow">B J Snow</name></author><author><name sortKey="Lee, C S" sort="Lee, C S" uniqKey="Lee C" first="C S" last="Lee">C S Lee</name></author><author><name sortKey="Schulzer, M" sort="Schulzer, M" uniqKey="Schulzer M" first="M" last="Schulzer">M. Schulzer</name></author><author><name sortKey="Mak, E" sort="Mak, E" uniqKey="Mak E" first="E" last="Mak">E. Mak</name></author><author><name sortKey="Calne, D B" sort="Calne, D B" uniqKey="Calne D" first="D B" last="Calne">D B Calne</name></author></analytic><series><title level="j">Annals of neurology</title><idno type="ISSN">0364-5134</idno><imprint><date when="1994" type="published">1994</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Aged</term><term>Dihydroxyphenylalanine (analogs & derivatives)</term><term>Disease Progression</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Parkinson Disease (diagnostic imaging)</term><term>Substantia Nigra (diagnostic imaging)</term><term>Tomography, Emission-Computed (methods)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="analogs & derivatives" xml:lang="en"><term>Dihydroxyphenylalanine</term></keywords><keywords scheme="MESH" qualifier="diagnostic imaging" xml:lang="en"><term>Parkinson Disease</term><term>Substantia Nigra</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Tomography, Emission-Computed</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Aged</term><term>Disease Progression</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Previous estimates of the rate of progression of the nigral pathology underlying idiopathic parkinsonism (IP) have been derived mainly from pathological studies that have an inherent selection bias. Fluorodopa positron emission tomography (PET) is a reliable tool for assessing nigrostriatal dopaminergic function in vivo. We performed fluorodopa PET on two occasions, 7 years apart, on 16 patients with IP (age at the time of the first scan, 51 +/- 14 yr [mean +/- SD]) and 10 normal controls (age, 54 +/- 16 yr). For the patients with IP, the average duration of symptoms from the time of diagnosis to the first scan was 4.5 years (range, 1-12 yr); their PET index (striatal-occipital)/occipital ratio, dropped by 1.7% per year, from 0.49 +/- 0.08 to 0.43 +/- 0.08 (p < 0.001). The normals' ratio decreased by 0.3% per year from 0.77 +/- 0.05 to 0.75 +/- 0.10 (p = 0.33). The ratios in the IP group progressed significantly faster than the controls (p = 0.036). The rate of decline in IP represents 7.8% per decade, expressed as a fraction of the normals' initial mean value at 54 years of age. These results also permit power analysis for the design of future studies assessing the effect of treatment on the underlying pathology in IP.</div></front></TEI><affiliations><list><country><li>Canada</li></country></list><tree><noCountry><name sortKey="Calne, D B" sort="Calne, D B" uniqKey="Calne D" first="D B" last="Calne">D B Calne</name><name sortKey="Lee, C S" sort="Lee, C S" uniqKey="Lee C" first="C S" last="Lee">C S Lee</name><name sortKey="Mak, E" sort="Mak, E" uniqKey="Mak E" first="E" last="Mak">E. Mak</name><name sortKey="Schulzer, M" sort="Schulzer, M" uniqKey="Schulzer M" first="M" last="Schulzer">M. Schulzer</name><name sortKey="Snow, B J" sort="Snow, B J" uniqKey="Snow B" first="B J" last="Snow">B J Snow</name></noCountry><country name="Canada"><noRegion><name sortKey="Vingerhoets, F J" sort="Vingerhoets, F J" uniqKey="Vingerhoets F" first="F J" last="Vingerhoets">F J Vingerhoets</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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