Serum Urate and Probability of Dopaminergic Deficit in Early "Parkinson's Disease"
Identifieur interne : 001993 ( Main/Merge ); précédent : 001992; suivant : 001994Serum Urate and Probability of Dopaminergic Deficit in Early "Parkinson's Disease"
Auteurs : Michael A. Schwarzschild [États-Unis] ; Kenneth Marek [États-Unis] ; Shirley Eberly [États-Unis] ; David Oakes [États-Unis] ; Ira Shoulson [États-Unis] ; Danna Jennings [États-Unis] ; John Seibyl [États-Unis] ; Alberto Ascherio [États-Unis]Source :
- Movement disorders [ 0885-3185 ] ; 2011.
Descripteurs français
- Pascal (Inist)
English descriptors
Abstract
The objective of this study was to investigate whether higher levels of urate, an antioxidant linked to a lower likelihood of developing Parkinson's disease, is also a predictor of having a dopamine transporter brain scan without evidence of dopaminergic deficit. In a cross-sectional study of 797 mildly affected, untreated parkinsonian subjects diagnosed with early Parkinson's disease in the Parkinson Research Examination of CEP-1347 Trial, we investigated the relationship at baseline between serum urate and striatal dopamine transporter density, determined by single-photon emission computed tomography of iodine-123-labeled 2-β-carboxymethoxy-3-β-(4-iodophenyl)tropane uptake. A scan without evidence of dopaminergic deficit was defined as lowest putamen iodine-123-labeled 2-β-carboxymethoxy-3-β-(4-iodophenyl)tropane > 80% age-expected putamen dopamine transporter density. The odds of having a scan without evidence of dopaminergic deficit rose across increasing quintiles of urate level, with an age- and sex-adjusted odds ratio of 3.2 comparing the highest to the lowest urate quintile (95% confidence interval, 1.5-7.2; P for trend = .0003), and remained significant after adjusting for potential confounding factors. The association was significant in men but not women, regardless of whether common or sex-specific quintiles of urate were used. Higher levels of urate were associated with a greater likelihood of a scan without evidence of dopaminergic deficit among subjects with early untreated parkinsonism in the Parkinson Research Examination of CEP-1347 Trial. The findings support the diagnostic utility of urate in combination with other determinants.
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<series><title level="j" type="main">Movement disorders</title>
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<front><div type="abstract" xml:lang="en">The objective of this study was to investigate whether higher levels of urate, an antioxidant linked to a lower likelihood of developing Parkinson's disease, is also a predictor of having a dopamine transporter brain scan without evidence of dopaminergic deficit. In a cross-sectional study of 797 mildly affected, untreated parkinsonian subjects diagnosed with early Parkinson's disease in the Parkinson Research Examination of CEP-1347 Trial, we investigated the relationship at baseline between serum urate and striatal dopamine transporter density, determined by single-photon emission computed tomography of iodine-123-labeled 2-β-carboxymethoxy-3-β-(4-iodophenyl)tropane uptake. A scan without evidence of dopaminergic deficit was defined as lowest putamen iodine-123-labeled 2-β-carboxymethoxy-3-β-(4-iodophenyl)tropane > 80% age-expected putamen dopamine transporter density. The odds of having a scan without evidence of dopaminergic deficit rose across increasing quintiles of urate level, with an age- and sex-adjusted odds ratio of 3.2 comparing the highest to the lowest urate quintile (95% confidence interval, 1.5-7.2; P for trend = .0003), and remained significant after adjusting for potential confounding factors. The association was significant in men but not women, regardless of whether common or sex-specific quintiles of urate were used. Higher levels of urate were associated with a greater likelihood of a scan without evidence of dopaminergic deficit among subjects with early untreated parkinsonism in the Parkinson Research Examination of CEP-1347 Trial. The findings support the diagnostic utility of urate in combination with other determinants.</div>
</front>
</TEI>
<affiliations><list><country><li>États-Unis</li>
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<tree><country name="États-Unis"><region name="Massachusetts"><name sortKey="Schwarzschild, Michael A" sort="Schwarzschild, Michael A" uniqKey="Schwarzschild M" first="Michael A." last="Schwarzschild">Michael A. Schwarzschild</name>
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<name sortKey="Ascherio, Alberto" sort="Ascherio, Alberto" uniqKey="Ascherio A" first="Alberto" last="Ascherio">Alberto Ascherio</name>
<name sortKey="Ascherio, Alberto" sort="Ascherio, Alberto" uniqKey="Ascherio A" first="Alberto" last="Ascherio">Alberto Ascherio</name>
<name sortKey="Eberly, Shirley" sort="Eberly, Shirley" uniqKey="Eberly S" first="Shirley" last="Eberly">Shirley Eberly</name>
<name sortKey="Jennings, Danna" sort="Jennings, Danna" uniqKey="Jennings D" first="Danna" last="Jennings">Danna Jennings</name>
<name sortKey="Marek, Kenneth" sort="Marek, Kenneth" uniqKey="Marek K" first="Kenneth" last="Marek">Kenneth Marek</name>
<name sortKey="Oakes, David" sort="Oakes, David" uniqKey="Oakes D" first="David" last="Oakes">David Oakes</name>
<name sortKey="Seibyl, John" sort="Seibyl, John" uniqKey="Seibyl J" first="John" last="Seibyl">John Seibyl</name>
<name sortKey="Shoulson, Ira" sort="Shoulson, Ira" uniqKey="Shoulson I" first="Ira" last="Shoulson">Ira Shoulson</name>
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</record>
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