{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T22:34:45Z","timestamp":1788388485023,"version":"build-2803163510"},"reference-count":45,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2017,9,14]],"date-time":"2017-09-14T00:00:00Z","timestamp":1505347200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100010746","name":"Suomen Ihotautil\u00e4\u00e4k\u00e4riyhdistys","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100010746","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Experimental Dermatology"],"published-print":{"date-parts":[[2018,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Oral retinoids and tetracyclines have a major role in acne treatment. Here, we report for the first time the effect of isotretinoin and lymecycline therapy on the skin microbiota in cheek, back and armpit swab samples of acne vulgaris patients using 16S ribosomal RNA (16S rRNA) gene amplicon sequencing. <jats:italic>Propionibacterium acnes<\/jats:italic> was the most common in sebaceous areas of healthy and untreated acne skin and more abundant in back than cheek samples. Five taxa, including a <jats:italic>Streptococcus<\/jats:italic> taxon, differed significantly between the cheek samples of healthy controls and acne patients, and acne severity was positively correlated with the abundance of <jats:italic>Propionibacterium<\/jats:italic>. Both treatments reduced clinical acne grades and the abundance of <jats:italic>Propionibacterium<\/jats:italic>, while the abundance of several other taxa was significantly higher in treated cheek samples compared with untreated ones. Less variation was observed in back samples and none in armpit samples. There were no differences in alpha diversity between control and acne patients in any of the sampled skin areas, but the diversity of the microbiota on the cheek and the back was significantly increased after acne treatments. This study provides insight into the skin microbiota in acne and how it is modulated by systemic acne treatment.<\/jats:p>","DOI":"10.1111\/exd.13397","type":"journal-article","created":{"date-parts":[[2017,6,21]],"date-time":"2017-06-21T20:02:49Z","timestamp":1498075369000},"page":"30-36","source":"Crossref","is-referenced-by-count":60,"title":["Isotretinoin and lymecycline treatments modify the skin microbiota in acne"],"prefix":"10.1111","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9471-9689","authenticated-orcid":false,"given":"Hanna\u2010Leena","family":"Kelh\u00e4l\u00e4","sequence":"first","affiliation":[{"name":"Department of Dermatology PEDEGO Research Center University of Oulu  Oulu Finland"},{"name":"Medical Research Center Oulu (MRC Oulu) Oulu University Hospital  Oulu Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Velma T. 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