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Correlation between the availability of dopamine transporter and olfactory function in healthy subjects.

Abstract：

OBJECTIVES:Olfactory dysfunction in Parkinson's disease is usually prodromal to other symptoms. In this study, we aimed to explore the association of olfactory function with the availabilities of striatal dopamine transporter (DAT) in healthy subjects. METHODS:Data used in the preparation of this article were obtained from Parkinson's Progression Markers Initiative database ( www.ppmi-info.org/data ). The study population consisted of healthy controls with screening 123I-FP-CIT single photon emission tomography (SPECT). University of Pennsylvania Smell Identification Test (UPSIT) was assessed to evaluate the olfactory function. RESULTS:Totally, 181 healthy subjects (117 male, 64 female) with 123I-FP-CIT SPECT data were included in this study. Specific binding ratios (SBRs) of the caudate nucleus (rho = -0.4217, p < 0.0001), putamen (rho = -0.2292, p = 0.0019), and striatum (rho=-0.3425, p < 0.0001) showed a reduction with ageing. SBRs of the caudate nucleus, putamen, and striatum were positively correlated with UPSIT (rho = 0.3716, p < 0.0001; rho = 0.3655, p < 0.0001; rho = 0.3880, p < 0.0001). After controlling for age by partial correlation, SBRs of the caudate nucleus, putamen, and striatum showed an influence on UPSIT (rho = 0.3288, p < 0.0001; rho = 0.3374, p < 0.0001; rho = 0.3511, p < 0.0001). CONCLUSION:Olfactory function is associated with the availability of striatal DAT independent of age in healthy subjects. KEY POINTS:• Olfactory dysfunction in Parkinson's disease is prodromal to other symptoms. • The availability of dopamine transporter showed a reduction with ageing. • Olfactory function is associated with the availability of dopamine transporter.

journal_name

Eur Radiol

journal_title

European radiology

authors

Pak K,Kim K,Lee MJ,Lee JM,Kim BS,Kim SJ,Kim IJ

doi

10.1007/s00330-017-5147-7

subject

Has Abstract

pub_date

2018-04-01 00:00:00

pages

1756-1760

issue

4

eissn

0938-7994

issn

1432-1084

pii

10.1007/s00330-017-5147-7

journal_volume

28

pub_type

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