{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,19]],"date-time":"2026-02-19T04:02:13Z","timestamp":1771473733336,"version":"3.50.1"},"reference-count":41,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2024,4,11]],"date-time":"2024-04-11T00:00:00Z","timestamp":1712793600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["NRF-2020R1I1A1A01074282"],"award-info":[{"award-number":["NRF-2020R1I1A1A01074282"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Catholic Medical Center Research Foundation","award":["NRF-2020R1I1A1A01074282"],"award-info":[{"award-number":["NRF-2020R1I1A1A01074282"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Imbalances in gut microbiota reportedly contribute to the development of autoimmune diseases, but the association between the etiopathogenesis of alopecia areata (AA) and gut microbial dysbiosis remains unclear. This cross-sectional study was conducted to identify and compare the composition of the gut microbiome in patients affected by AA and those in a healthy control (HC) group, and to investigate possible bacterial biomarkers for the disease. Fecal samples were collected from 19 AA patients and 20 HCs to analyze the relationship with fecal bacteria. The three major genera constituting the gut microbiome of AA patients were Bacteroides, Blautia, and Faecalibacterium. The alpha diversity of the AA group was not statistically significant different from that of the HC group. However, bacterial community composition in the AA group was significantly different from that of HC group according to Jensen\u2013Shannon dissimilarities. In patients with AA, we found an enriched presence of the genera Blautia and Eubacterium_g5 compared to the HC group (p &lt; 0.05), whereas Bacteroides were less prevalent (p &lt; 0.05). The gut microbiota of AA patients was distinct from those of the HC group. Our findings suggest a possible involvement of gut microbiota in in the as-yet-undefined pathogenesis of AA.<\/jats:p>","DOI":"10.3390\/ijms25084256","type":"journal-article","created":{"date-parts":[[2024,4,12]],"date-time":"2024-04-12T03:34:37Z","timestamp":1712892877000},"page":"4256","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Exploring the Role of Gut Microbiota in Patients with Alopecia Areata"],"prefix":"10.3390","volume":"25","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5132-1627","authenticated-orcid":false,"given":"Ji Hae","family":"Lee","sequence":"first","affiliation":[{"name":"Department of Dermatology, St. Vincent\u2019s Hospital, College of Medicine, The Catholic University of Korea, Seoul 16247, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-8158-1884","authenticated-orcid":false,"given":"Ji Hae","family":"Shin","sequence":"additional","affiliation":[{"name":"Department of Dermatology, St. Vincent\u2019s Hospital, College of Medicine, The Catholic University of Korea, Seoul 16247, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7043-8193","authenticated-orcid":false,"given":"Ji Yoon","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Dermatology, St. Vincent\u2019s Hospital, College of Medicine, The Catholic University of Korea, Seoul 16247, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2711-3112","authenticated-orcid":false,"given":"Hyun Jeong","family":"Ju","sequence":"additional","affiliation":[{"name":"Department of Dermatology, St. Vincent\u2019s Hospital, College of Medicine, The Catholic University of Korea, Seoul 16247, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gyong Moon","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Dermatology, St. Vincent\u2019s Hospital, College of Medicine, The Catholic University of Korea, Seoul 16247, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,4,11]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"397","DOI":"10.2147\/CCID.S53985","article-title":"Epidemiology and burden of alopecia areata: A systematic review","volume":"8","author":"Miteva","year":"2015","journal-title":"Clin. 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