{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,12]],"date-time":"2026-09-12T04:47:14Z","timestamp":1789188434315,"version":"build-2803163510"},"reference-count":78,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2023,3,17]],"date-time":"2023-03-17T00:00:00Z","timestamp":1679011200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>There is a lack of effective diagnostic biomarkers for neurodegenerative disorders (NDDs). Here, we established gene expression profiles for diagnosing Alzheimer\u2019s disease (AD), Parkinson\u2019s disease (PD), and vascular (VaD)\/mixed dementia. Patients with AD had decreased APOE, PSEN1, and ABCA7 mRNA expression. Subjects with VaD\/mixed dementia had 98% higher PICALM mRNA levels, but 75% lower ABCA7 mRNA expression than healthy individuals. Patients with PD and PD-related disorders showed increased SNCA mRNA levels. There were no differences in mRNA expression for OPRK1, NTRK2, and LRRK2 between healthy subjects and NDD patients. APOE mRNA expression had high diagnostic accuracy for AD, and moderate accuracy for PD and VaD\/mixed dementia. PSEN1 mRNA expression showed promising accuracy for AD. PICALM mRNA expression was less accurate as a biomarker for AD. ABCA7 and SNCA mRNA expression showed high-to-excellent diagnostic accuracy for AD and PD, and moderate-to-high accuracy for VaD\/mixed dementia. The APOE E4 allele reduced APOE expression in patients with different APOE genotypes. There was no association between PSEN1, PICALM, ABCA7, and SNCA gene polymorphisms and expression. Our study suggests that gene expression analysis has diagnostic value for NDDs and provides a liquid biopsy alternative to current diagnostic methods.<\/jats:p>","DOI":"10.3390\/ijms24065746","type":"journal-article","created":{"date-parts":[[2023,3,17]],"date-time":"2023-03-17T03:33:57Z","timestamp":1679024037000},"page":"5746","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Gene Expression Profiling as a Novel Diagnostic Tool for Neurodegenerative Disorders"],"prefix":"10.3390","volume":"24","author":[{"given":"Olaia","family":"Mart\u00ednez-Iglesias","sequence":"first","affiliation":[{"name":"EuroEspes Biomedical Research Center, International Center of Neuroscience and Genomic Medicine, 15165 Bergondo, Corunna, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vinogran","family":"Naidoo","sequence":"additional","affiliation":[{"name":"EuroEspes Biomedical Research Center, International Center of Neuroscience and Genomic Medicine, 15165 Bergondo, Corunna, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3159-3545","authenticated-orcid":false,"given":"Juan Carlos","family":"Carril","sequence":"additional","affiliation":[{"name":"EuroEspes Biomedical Research Center, International Center of Neuroscience and Genomic Medicine, 15165 Bergondo, Corunna, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Silvia","family":"Seoane","sequence":"additional","affiliation":[{"name":"EuroEspes Biomedical Research Center, International Center of Neuroscience and Genomic Medicine, 15165 Bergondo, Corunna, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Natalia","family":"Cacabelos","sequence":"additional","affiliation":[{"name":"EuroEspes Biomedical Research Center, International Center of Neuroscience and Genomic Medicine, 15165 Bergondo, Corunna, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0554-4037","authenticated-orcid":false,"given":"Ram\u00f3n","family":"Cacabelos","sequence":"additional","affiliation":[{"name":"EuroEspes Biomedical Research Center, International Center of Neuroscience and Genomic Medicine, 15165 Bergondo, Corunna, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"179","DOI":"10.1038\/539179a","article-title":"Neurodegenerative disease","volume":"539","author":"Heemels","year":"2016","journal-title":"Nature"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"499","DOI":"10.1242\/dmm.030205","article-title":"Neurodegenerative diseases:models, mechanisms, and a new hope","volume":"10","author":"Gitler","year":"2017","journal-title":"Dis. 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