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. 2005 Sep 27;65(6):941-3.
doi: 10.1212/01.wnl.0000176071.08694.cc.

Striatal dopamine D2 receptors, metabolism, and volume in preclinical Huntington disease

J C H van Oostrom  1 , R P Maguire, C C Verschuuren-Bemelmans, L Veenma-van der Duin, J Pruim, R A C Roos, K L Leenders
Affiliations

Striatal dopamine D2 receptors, metabolism, and volume in preclinical Huntington disease

J C H van Oostrom et al. Neurology. .

Abstract

Among 27 preclinical carriers of the Huntington disease mutation (PMC), the authors found normal striatal values for MRI volumetry in 88% and for fluorodesoxyglucose PET metabolic index in 67%. Raclopride PET binding potential (RAC-BP) was decreased in 50% and correlated with increases in the product of age and CAG repeat length (p < 0.0005). Dopamine D2 receptor availability measured by RAC-BP seems the most sensitive indicator of early neuronal impairment in PMC.

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