{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T23:23:49Z","timestamp":1791242629969,"version":"4.1.0"},"reference-count":133,"publisher":"MDPI AG","issue":"19","license":[{"start":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T00:00:00Z","timestamp":1759968000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Neurodegenerative diseases (NDDs) are a group of progressive diseases affecting neuronal cells in specific areas of the brain, causing cognitive decline and movement impairment. Nowadays, NDDs play a significant role in the global burden of disease, and their incidence is increasing, particularly due to population aging. NDD onset is multi-factorial; based on the current knowledge, genetic, environmental, and cellular factors are believed to contribute to their occurrence and progression. Taking into account that at an early stage, the symptoms are not clearly defined, and diagnosis may be delayed, the development of innovative and non-invasive methodological approaches for early diagnosis of NDDs is strategic for timely and tailored disease management, as well as for the overall improvement of patients\u2019 quality of life. The present review aims to provide, in the first part, an overview based on the current level of knowledge on the environmental risk factors that can explicate a role in the onset of the most common NDDs and on the main pathogenic mechanisms involved in disease initiation and progression. The second part aims to define the current state of the art regarding the significance of Volatile Organic Compounds (VOCs) in the volatome of different human biological matrices (exhaled breath, feces, and skin sebum) as candidate biomarkers of specific NDDs, with the aim of developing non-invasive diagnostic approaches for the early diagnosis and personalized management of the patients. A critical synthesis and discussion on the applied methodological approaches and on the relevant outcomes obtained across the studies is reported.<\/jats:p>","DOI":"10.3390\/molecules30194028","type":"journal-article","created":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T09:45:01Z","timestamp":1760089501000},"page":"4028","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Volatile Organic Compounds (VOCs) in Neurodegenerative Diseases (NDDs): Diagnostic Potential and Analytical Approaches"],"prefix":"10.3390","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2178-5743","authenticated-orcid":false,"given":"Jolanda","family":"Palmisani","sequence":"first","affiliation":[{"name":"Department of Biosciences, Biotechnology and Environment, University of Bari, Via Edoardo Orabona, 70125 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1198-9104","authenticated-orcid":false,"given":"Antonella Maria","family":"Aresta","sequence":"additional","affiliation":[{"name":"Department of Biosciences, Biotechnology and Environment, University of Bari, Via Edoardo Orabona, 70125 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3706-6276","authenticated-orcid":false,"given":"Viviana","family":"Vergaro","sequence":"additional","affiliation":[{"name":"Department of Experimental Medicine, University of Salento c\/o College Isufi, Centro Ecoteckne, Via Monteroni, 73100 Lecce, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giovanna","family":"Mancini","sequence":"additional","affiliation":[{"name":"Department of Biosciences, Biotechnology and Environment, University of Bari, Via Edoardo Orabona, 70125 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Miriana Cosma","family":"Mazzola","sequence":"additional","affiliation":[{"name":"Department of Biosciences, Biotechnology and Environment, University of Bari, Via Edoardo Orabona, 70125 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marirosa Rosaria","family":"Nisi","sequence":"additional","affiliation":[{"name":"Department of Biosciences, Biotechnology and Environment, University of Bari, Via Edoardo Orabona, 70125 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lucia","family":"Pastore","sequence":"additional","affiliation":[{"name":"Department of Biosciences, Biotechnology and Environment, University of Bari, Via Edoardo Orabona, 70125 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Valentina","family":"Pizzillo","sequence":"additional","affiliation":[{"name":"Department of Biosciences, Biotechnology and Environment, University of Bari, Via Edoardo Orabona, 70125 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicoletta","family":"De Vietro","sequence":"additional","affiliation":[{"name":"Department of Biosciences, Biotechnology and Environment, University of Bari, Via Edoardo Orabona, 70125 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0354-384X","authenticated-orcid":false,"given":"Chiara","family":"Boncristiani","sequence":"additional","affiliation":[{"name":"Department of Experimental Medicine, University of Salento c\/o College Isufi, Centro Ecoteckne, Via Monteroni, 73100 Lecce, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4467-0922","authenticated-orcid":false,"given":"Giuseppe","family":"Ciccarella","sequence":"additional","affiliation":[{"name":"Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, Via Monteroni, 73100 Lecce, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0588-3688","authenticated-orcid":false,"given":"Carlo","family":"Zambonin","sequence":"additional","affiliation":[{"name":"Department of Biosciences, Biotechnology and Environment, University of Bari, Via Edoardo Orabona, 70125 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6868-6569","authenticated-orcid":false,"given":"Gianluigi","family":"de Gennaro","sequence":"additional","affiliation":[{"name":"Department of Biosciences, Biotechnology and Environment, University of Bari, Via Edoardo Orabona, 70125 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9951-4498","authenticated-orcid":false,"given":"Alessia","family":"Di Gilio","sequence":"additional","affiliation":[{"name":"Department of Biosciences, Biotechnology and Environment, 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