{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,5]],"date-time":"2026-05-05T02:13:35Z","timestamp":1777947215985,"version":"3.51.4"},"reference-count":0,"publisher":"S. Karger AG","license":[{"start":{"date-parts":[[2009,3,31]],"date-time":"2009-03-31T00:00:00Z","timestamp":1238457600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"},{"start":{"date-parts":[[2009,3,31]],"date-time":"2009-03-31T00:00:00Z","timestamp":1238457600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Skin Pharmacol"],"abstract":"<jats:p>The cell kinetics of anagen scalp hair bulbs taken by punch biopsies from healthy male volunteers (n = 50) were determined at defined bulbar hair segments using microdissection and DNA flow cytometry. The highest proliferative activity (S phase) was measured within the lower most bulbar segment (14.0%) but decreased to the Auber\u2019s segment (7.6%) and to the isthmus segment (5.9%). The results support histoautora-diographic data demonstrating most of the proliferative activity in the hair bulb below the Auber\u2019s level [1]. Furthermore, cell kinetic data of dissected anagen hair bulbs segmented at Auber\u2019s level from an androgen-sensitive scalp area were studied in male pattern baldness (n = 15, Hamilton IV) and hirsutism (n = 13). The results revealed a significant increase of S phase cells in male pattern baldness (8.9%) compared to healthy males (n = 10, 7.9%) as well as in hirsutism (10.2%) compared to healthy females (n = 10, 7.5%). In hirsutism the percentages of S phase cells ran parallel to the plasma levels of dehydroepiandrosterone sulfate whereas no correlation to testosterone could be proved. Similar, 6 hypothyroid and 6 hyperthyroid patients were studied. In hyperthyroidism an increase of S phase values (10.3%) was found, while it decreased in hypothyroidism (6.1%). A correlation between the height of S phase and plasma triiodothyronine level was noted. Our studies demonstrate that DNA flow cytometry is a suitable method for the evaluation of physiological or hormonal influences on cell cycle kinetics of human anagen hair bulbs in vivo.<\/jats:p>","DOI":"10.1159\/000211274","type":"journal-article","created":{"date-parts":[[2009,4,2]],"date-time":"2009-04-02T10:14:27Z","timestamp":1238667267000},"page":"55-60","source":"Crossref","is-referenced-by-count":3,"title":["Cell Kinetics of Anagen Scalp Hairs under Physiological and Pathological Conditions"],"prefix":"10.1159","author":[{"given":"F.","family":"Kiesewetter","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"H.","family":"Schell","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"127","published-online":{"date-parts":[[2009,3,31]]},"container-title":["Skin Pharmacology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/211274","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/karger.com\/article-pdf\/doi\/10.1159\/000211274","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T22:39:35Z","timestamp":1777761575000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000211274"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2009,3,31]]},"references-count":0,"URL":"https:\/\/doi.org\/10.1159\/000211274","archive":["Portico"],"relation":{},"ISSN":["1011-0283","2571-7162"],"issn-type":[{"value":"1011-0283","type":"print"},{"value":"2571-7162","type":"electronic"}],"subject":[],"published":{"date-parts":[[2009,3,31]]}}}