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IRIS è il sistema di gestione della ricerca dell’Università degli Studi di Milano-Bicocca.Il repository BOA è il modulo del sistema dedicato alla raccolta e alla disseminazione della produzione scientifica di Ateneo. Le pubblicazioni sono ricercabili per parola chiave attraverso il box nella barra orizzontale in alto oppure, mediante il pulsante Sfoglia, per "Afferenza", "Autore", "Titolo", "Tipologia" o "Settore scientifico-disciplinare".
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EnglishSeveral micro(mi)RNA are deregulated in brain, cerebrospinal fluid (CSF), and serum/plasma from patients with Alzheimer's disease (AD). The aim of the study was to profile circulating miRNAs in serum as non-invasive biomarkers for AD, correlating them with those identified in CSF, the biological fluid which better reflects biochemical changes occurring during pathological processes in the brain and may provide a robust indicator of AD-related disease pathogenesis thanks to the evidence of low amyloid and high levels of tau and hyperphosphorylated tau. Using a two-step analysis (array and validation through real-time PCR), a down-regulation (mean fold change ± SEM) of miR-125b (0.415 ± 0.11 versus 1.381 ± 0.36, p = 0.009), miR-23a (0.111 ± 0.03 versus 0.732 ± 0.14, p < 0.001), and miR-26b (0.414 ± 0.11 versus 1.353 ± 0.39, p < 0.01), out of 84 tested, was shown in serum from 22 AD patients compared with 18 non-inflammatory and 8 inflammatory neurological controls (NINDCs and INDCs) and 10 patients with frontotemporal dementia. Significant down-regulation of miR-125b and miR-26b was also confirmed in CSF from AD patients versus NINDCs (miR-125b: 0.089 ± 0.03 versus 0.230 ± 0.08, p < 0.001; miR-26b: 0.217 ± 0.06 versus 1.255 ± 0.29, p < 0.001, mean fold change ± SEM, respectively), whereas data were not replicated for miR-23a. In serum, miR-125b had an AUC of 0.82 to distinguish AD from NINDCs (95% CI: 0.65-0.98, p = 0.005). In conclusion, we demonstrated that cell-free miR-125b serum levels are decreased in serum from patients with AD as compared with NINDC and distinguish between AD and NINDCs with an accuracy of 82%. Supplementary Figure 1. A) Array miRNA list; B) Heat map. Data are expressed as fold change (fold difference) in Alzheimer's disease patients versus controls and normalized on cel-miR-39. Each square represents a single miRNA. Green indicates down-regulation and red indicates upregulation.
Villa, C. (2014). Circulating miRNAs as potential biomarkers in Alzheimer's disease. JOURNAL OF ALZHEIMER'S DISEASE, 42(4), 1261-1267.
| Citazione: | Villa, C. (2014). Circulating miRNAs as potential biomarkers in Alzheimer's disease. JOURNAL OF ALZHEIMER'S DISEASE, 42(4), 1261-1267. | |
| Tipo: | Articolo in rivista - Articolo scientifico | |
| Carattere della pubblicazione: | Scientifica | |
| Presenza di un coautore afferente ad Istituzioni straniere: | No | |
| Titolo: | Circulating miRNAs as potential biomarkers in Alzheimer's disease | |
| Autori: | Villa, C | |
| Autori: | VILLA, CHIARA (Primo) | |
| Data di pubblicazione: | 2014 | |
| Lingua: | English | |
| Rivista: | JOURNAL OF ALZHEIMER'S DISEASE | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.3233/JAD-140756 | |
| Appare nelle tipologie: | 01 - Articolo su rivista |
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