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J Neurol Sci. 2008 Mar 15;266(1-2):20-4. Epub 2007 Sep 14.

Serum heart-fatty acid binding protein levels in patients with Lewy body disease.

Author information

  • 1Department of Neurology, Institute of Neurological Sciences, Faculty of Medicine, Tottori University, 36-1 Nishi-cho, Yonago, 683-8504, Japan. kewada@grape.med.tottori-u.ac.jp

Abstract

OBJECTIVE:

In order to examine a possible role of serum heart-fatty acid binding protein (H-FABP) in patients with Lewy body disease, we measured serum levels of H-FABP in patients with dementia with Lewy bodies (DLB), Parkinson's disease (PD), and Alzheimer's disease (AD).

METHODS:

Serum levels of H-FABP were measured using a solid-phase enzyme-linked immunoassay. Iodine-123 metaiodobenzylguanidine ((123)I-MIBG) cardiac scintigraphy was performed on each patient and the heart to mediastinum (H/M) ratio was calculated. Receiver operating characteristic (ROC) analysis was used to calculate the optimal cutoff values of the H-FABP between DLB and AD patients. Independent predictive variables for serum H-FABP levels were analyzed using multivariate regression analysis.

RESULTS:

Serum levels of H-FABP were significantly higher in DLB patients and PD patients than in AD patients. H/M ratios of the DLB and PD patients were significantly lower than those of AD patients. The diagnostic value of the serum H-FABP levels between AD and DLB patients was inferior to that of the delayed H/M ratio of (123)I-MIBG cardiac scintigraphy. Multivariate regression analysis revealed that the delayed H/M ratio predicted serum H-FABP levels in the PD patients.

CONCLUSIONS:

Examination of serum H-FABP levels did not allow discrimination between DLB and AD patients. Cardiac sympathetic nerve dysfunction may be associated with elevation of serum H-FABP in Lewy body disease patients.

[PubMed - indexed for MEDLINE]
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