Detection of disease-associated α-synuclein in the cerebrospinal fluid: a feasibility study.

Detection of disease-associated α-synuclein in the cerebrospinal fluid: a feasibility study.
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DOI:
10.5414/np300796
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发表时间:
2014-09
影响因子:
1.1
通讯作者:
Kovacs GG
Kovacs GG
中科院分区:
医学4区
文献类型:
--
作者:
Unterberger U;Lachmann I;Voigtländer T;Pirker W;Berghoff AS;Flach K;Wagner U;Geneste A;Perret-Liaudet A;Kovacs GG

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With the aim to evaluate the significance and reliability of detecting disease-specific α-synuclein in the cerebrospinal fluid (CSF) we developed an ELISA and bead-assay. We used a commercial antibody (5G4) that does not bind to the physiological monomeric form of α-synuclein, but is highly specific for the disease-associated forms, including high molecular weight fraction of β-sheet rich oligomers. We applied both tests in CSF from a series of neuropathologically confirmed α-synucleinopathy cases, including Parkinson’s disease dementia (PDD) and dementia with Lewy bodies (DLB) (n = 7), as well as Alzheimer’s disease (n = 6), and control patients without neurodegenerative pathologies (n = 9). Disease-specific α-synuclein was detectable in the CSF in a subset of patients with α-synuclein pathology in the brain. When combined with the analysis of total α-synuclein, the bead-assay for disease-specific α-synuclein was highly specific for PDD/DLB. Detection of disease-associated α-synuclein combined with the total levels of α-synuclein is a promising tool for the in-vivo diagnosis of α-synucleinopathies, including PDD and LBD.
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