MicroRNA association with synucleinopathy conversion in rapid eye movement behavior disorder

Recently, we reported downregulated circulating levels of the microRNAs miR‐19b, miR‐29a, and miR‐29c in Parkinson disease. Here we investigated the expression of these microRNAs in serum samples from 56 patients with idiopathic rapid eye movement sleep behavior disorder, before and after their conv...

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Bibliographic Details
Published in:Annals of neurology 2015-05, Vol.77 (5), p.895-901
Main Authors: Fernández-Santiago, Rubén, Iranzo, Alex, Gaig, Carles, Serradell, Mónica, Fernández, Manel, Tolosa, Eduardo, Santamaría, Joan, Ezquerra, Mario
Format: Article
Language:English
Subjects:
Aged
Biomarkers - blood
Disease Progression
Female
Follow-Up Studies
Humans
Male
MicroRNAs - blood
Middle Aged
REM Sleep Behavior Disorder - blood
REM Sleep Behavior Disorder - diagnosis
Synucleins - blood
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Summary:Recently, we reported downregulated circulating levels of the microRNAs miR‐19b, miR‐29a, and miR‐29c in Parkinson disease. Here we investigated the expression of these microRNAs in serum samples from 56 patients with idiopathic rapid eye movement sleep behavior disorder, before and after their conversion into a synucleinopathy. Compared to controls, we found that the expression level of miR‐19b is downregulated in patients with idiopathic rapid eye movement sleep behavior disorder and antedates the diagnosis of Parkinson disease and dementia with Lewy bodies after 4.67 ± 2.61 years of follow‐up. Our findings indicate that dysregulation of the microRNA miR‐19b occurs in the prodromal stage of synucleinopathies. Ann Neurol 2015;77:895–901
ISSN:0364-5134
1531-8249
DOI:10.1002/ana.24384