Progression of dopaminergic degeneration in dementia with Lewy bodies and Parkinson’s disease with and without dementia assessed using 123I-FP-CIT SPECT

  • Sean J. Colloby
  • E. David Williams
  • David J. Burn
  • Jim J. Lloyd
  • Ian G. McKeith
  • John T. O’Brien
Original Article

DOI: 10.1007/s00259-005-1830-z

Cite this article as:
Colloby, S.J., Williams, E.D., Burn, D.J. et al. Eur J Nucl Med Mol Imaging (2005) 32: 1176. doi:10.1007/s00259-005-1830-z

Abstract

Purpose

The objective of this study was to investigate the rate of progression of nigrostriatal dopaminergic loss in subjects with dementia with Lewy bodies (DLB), Parkinson’s disease (PD) and PD with dementia (PDD) using serial 123I-FP-CIT SPECT imaging. We hypothesised that striatal rates of decline in patients would be greater than in controls, and that DLB and PDD would show similar rates, reflecting the similarity in neurobiological mechanisms of dopaminergic loss between the two disorders.

Methods

We studied 20 patients with DLB, 20 with PD, 15 with PDD and 22 healthy age-matched controls. Semi-automated region of interest (ROI) analysis was performed on both baseline and repeat scans for each subject and mean striatal uptake ratios (caudate, anterior and posterior putamen) were calculated.

Results

Rates of decline in striatal binding between groups were assessed using ANCOVA. Significant differences between patients and controls were observed in caudate (DLB, PD, PDD, p≤0.01), anterior putamen (DLB, PDD, p≤0.05; PD, p=0.07) and posterior putamen (DLB, PD, PDD, p<0.006). Rates of decline were similar between DLB, PD and PDD.

Conclusion

In conclusion, this is the first study to show that significant progressive dopaminergic loss occurs in DLB and PDD using serial 123I-FP-CIT SPECT. Dementia severity and motor impairment were correlated with decline, suggesting that dopaminergic loss may play an important role in cognitive as well as motor features.

Keywords

Dementia with Lewy bodiesParkinson’s diseaseDisease progression123I-FP-CITSPECT

Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • Sean J. Colloby
    • 1
  • E. David Williams
    • 2
  • David J. Burn
    • 3
  • Jim J. Lloyd
    • 4
  • Ian G. McKeith
    • 1
  • John T. O’Brien
    • 1
  1. 1.Institute for Ageing and Health, Wolfson Research Centre, Newcastle General HospitalNewcastle UniversityNewcastle upon TyneUK
  2. 2.Regional Medical Physics DepartmentSunderland Royal HospitalSunderlandUK
  3. 3.Department of NeurologyNewcastle General HospitalNewcastle upon TyneUK
  4. 4.Regional Medical Physics DepartmentRoyal Victoria InfirmaryNewcastle upon TyneUK