{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,14]],"date-time":"2026-07-14T09:57:19Z","timestamp":1784023039727,"version":"3.55.0"},"reference-count":88,"publisher":"MDPI AG","issue":"22","license":[{"start":{"date-parts":[[2025,11,20]],"date-time":"2025-11-20T00:00:00Z","timestamp":1763596800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"SynBalance S.r.l"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Elderly individuals are more vulnerable to disease due to their increased frailty. Emerging evidence highlights the potential of probiotics as geroprotective agents by maintaining gut health and modulating key physiological processes involved in aging, such as inflammation, cognitive functions, and metabolism. Here, we investigated the geroprotective potential of four probiotic strains (Lacticaseibacillus paracasei LPC1114, Limosilactobacillus reuteri PBS072, Bifidobacterium breve BB077, and Bifidobacterium animalis subsp. lactis BL050) using Caenorhabditis elegans as an aging model. Mid-life healthspan parameters were assessed, including lifespan, motility, ROS levels, lipofuscin accumulation, and cognitive capabilities. The probiotics exhibited strain-specific effects. L. reuteri PBS072 and B. lactis BL050 significantly increased locomotion by 20% and decreased ROS levels by 70% and 30% respectively, suggesting enhanced oxidative stress response and neuromuscular maintenance. B. breve BB077, L. paracasei LPC1114, and L. reuteri PBS072 enhanced associative learning performance, whereas B. lactis BL050 improved chemotactic response. Notably, only L. paracasei LPC1114 and L. reuteri PBS072 extended the maximum lifespan by 4 and 5 days, respectively, an effect mediated by the longevity-related genes skn1, sir2.1, and daf16. Our findings highlight the multifaceted, strain-specific geroprotective properties of probiotics and support their potential as microbiome-based interventions to promote healthy aging.<\/jats:p>","DOI":"10.3390\/ijms262211205","type":"journal-article","created":{"date-parts":[[2025,11,20]],"date-time":"2025-11-20T09:44:53Z","timestamp":1763631893000},"page":"11205","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Probiotic Modulation in Aging: Strain-Specific Geroprotective Effects in Caenorhabditis elegans"],"prefix":"10.3390","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5891-0299","authenticated-orcid":false,"given":"Barbara","family":"Sciandrone","sequence":"first","affiliation":[{"name":"Department of Biotechnology and Biosciences BtBs, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milan, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8090-7718","authenticated-orcid":false,"given":"Diletta Francesca","family":"Squarzanti","sequence":"additional","affiliation":[{"name":"SynBalance Srl, 21040 Origgio, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-1327-5682","authenticated-orcid":false,"given":"Patrizia","family":"Malfa","sequence":"additional","affiliation":[{"name":"SynBalance Srl, 21040 Origgio, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria Elena","family":"Regonesi","sequence":"additional","affiliation":[{"name":"Department of Biotechnology and Biosciences BtBs, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milan, Italy"},{"name":"Milan Center of Neuroscience (NeuroMI), 20126 Milan, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,11,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"7124","DOI":"10.1073\/pnas.78.11.7124","article-title":"The Aging Process","volume":"78","author":"Harman","year":"1981","journal-title":"Proc. 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