{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T12:43:03Z","timestamp":1777898583490,"version":"3.51.4"},"reference-count":0,"publisher":"S. Karger AG","license":[{"start":{"date-parts":[[2008,12,10]],"date-time":"2008-12-10T00:00:00Z","timestamp":1228867200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"},{"start":{"date-parts":[[2008,12,10]],"date-time":"2008-12-10T00:00:00Z","timestamp":1228867200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Horm Res"],"abstract":"<jats:p>We report the treatment of a 14-year-old Indian boy with acanthosis nigricans and hyperinsulinaemia with metformin in an attempt to improve his skin lesions. Oral metformin was used for 6 months with assessment of insulin status during an intravenous glucose tolerance test and hyperinsulinaemic-euglycaemic clamping before and after treatment. The first-phase insulin response reduced from 19,593 to 5,410 pmol\/l\/min (normal 1,900-13,400), and the second-phase insulin response improved from 59,120 to 34,020 pmol\/ 1\/min (normal 2,900-18,100). During hyperinsulinaemic-euglycaemic clamping hepatic glucose production was normally suppressed prior to therapy, but peripheral glucose remained abnormally low, 152 and 138% of basal (expected 199%). The acanthosis nigricans remained unaltered but over this period puberty progressed and his body mass index increased. We conclude that, in this patient, metformin had a minimal effect on the hyperinsulinism and none on the acanthosis nigricans in the relatively short term, but further studies in more patients over longer time intervals are warranted.<\/jats:p>","DOI":"10.1159\/000185493","type":"journal-article","created":{"date-parts":[[2008,12,11]],"date-time":"2008-12-11T09:35:10Z","timestamp":1228988110000},"page":"88-92","source":"Crossref","is-referenced-by-count":3,"title":["Effect of Metformin on Glucose Disposal and Hyperinsulinaemia in a 14-Year-Old Boy with Acanthosis Nigricans"],"prefix":"10.1159","author":[{"given":"Philip J.","family":"Lee","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Iain","family":"Cranston","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stephanie A.","family":"Amiel","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stephen","family":"O&apos;Rahilly","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Albert Aynsley","family":"Green","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"127","published-online":{"date-parts":[[2008,12,10]]},"container-title":["Hormone Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/karger.com\/article-pdf\/doi\/10.1159\/000185493","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T09:34:55Z","timestamp":1777628095000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000185493"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2008,12,10]]},"references-count":0,"URL":"https:\/\/doi.org\/10.1159\/000185493","archive":["Portico"],"relation":{},"ISSN":["0301-0163","1423-0046"],"issn-type":[{"value":"0301-0163","type":"print"},{"value":"1423-0046","type":"electronic"}],"subject":[],"published":{"date-parts":[[2008,12,10]]}}}