{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T07:28:15Z","timestamp":1780471695889,"version":"3.54.1"},"reference-count":14,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2008,1,31]],"date-time":"2008-01-31T00:00:00Z","timestamp":1201737600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Arthritis &amp; Rheumatism"],"published-print":{"date-parts":[[2008,2,15]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To determine areas under the curve (AUCs) of oral prednisolone (OP) and intravenous methylprednisolone (IVMP) in patients with juvenile dermatomyositis (DM) and assess the association with nailfold end\u2010row loops (ERLs). Patients with active disease have fewer ERLs that possibly occur in the gastrointestinal tract, impairing absorption of oral medications.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Six patients with juvenile DM received 50 mg\/m<jats:sup>2<\/jats:sup> of OP (day 1) and IVMP (day 2). Blood was drawn at baseline and at 5, 15, 30, 45, 60, and 90 minutes, and hourly (hours 2\u20138) after each dose. Samples were analyzed by reverse\u2010phase high\u2010performance liquid chromatography for levels of prednisolone and methylprednisolone. AUCs of OP and IVMP were determined by the trapezoid method; pharmacokinetic parameters were obtained using noncompartmental and compartmental analysis. ERLs were determined from freeze\u2010frame video microscopy and nailfold capillaroscopy.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>There was a trend toward significance in difference in mean AUC of IVMP (116.72 \u03bcg \u00d7 ml\/hour) compared with OP (65.16 \u03bcg \u00d7 ml\/hour; <jats:italic>P<\/jats:italic> = 0.059). Mean peak concentration was higher for IVMP (34.49 \u03bcg\/ml) than OP (7.08 \u03bcg\/ml); mean half\u2010life was shorter for IVMP (1.90 hours) than OP (2.36 hours). There was an inverse association between \u0394AUCs (IVMP AUC \u2212 OP AUC) and ERLs (R = \u22120.68, <jats:italic>P<\/jats:italic> = 0.044).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Patients with juvenile DM and ERL loss may have decreased bioavailability of OP compared with IVMP. This can provide the rationale for greater efficacy of IVMP in patients with active vasculopathy of juvenile DM. Further studies investigating the pharmacokinetics and pharmacodynamics of high\u2010dose IVMP need to be performed in patients with juvenile DM.<\/jats:p><\/jats:sec>","DOI":"10.1002\/art.23341","type":"journal-article","created":{"date-parts":[[2008,1,31]],"date-time":"2008-01-31T18:48:31Z","timestamp":1201805311000},"page":"222-226","source":"Crossref","is-referenced-by-count":80,"title":["Pharmacokinetic study of oral prednisolone compared with intravenous methylprednisolone in patients with juvenile dermatomyositis"],"prefix":"10.1002","volume":"59","author":[{"given":"Kelly A.","family":"Rouster\u2010Stevens","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aneel","family":"Gursahaney","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ka\u2010leung","family":"Ngai","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jennifer A.","family":"Daru","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lauren M.","family":"Pachman","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2008,1,31]]},"reference":[{"key":"e_1_2_6_2_2","doi-asserted-by":"publisher","DOI":"10.1002\/art.11122"},{"key":"e_1_2_6_3_2","doi-asserted-by":"publisher","DOI":"10.1002\/art.10924"},{"key":"e_1_2_6_4_2","first-page":"1644","article-title":"Skin involvement in juvenile dermatomyositis is associated with loss of end row nailfold capillary loops","volume":"31","author":"Smith RL","year":"2004","journal-title":"J Rheumatol"},{"issue":"9","key":"e_1_2_6_5_2","first-page":"S723","article-title":"Association of nailfold capillaroscopy (NFC) and disease activity score (DAS) over time in previously untreated juvenile dermatomyositis (JDM)","volume":"52","author":"Christen\u2010Zaech S","year":"2005","journal-title":"Arthritis Rheum"},{"key":"e_1_2_6_6_2","doi-asserted-by":"publisher","DOI":"10.1067\/mjd.2002.122196"},{"key":"e_1_2_6_7_2","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM197502132920706"},{"key":"e_1_2_6_8_2","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM197502202920807"},{"key":"e_1_2_6_9_2","doi-asserted-by":"publisher","DOI":"10.1212\/01.WNL.0000138572.82125.F5"},{"key":"e_1_2_6_10_2","doi-asserted-by":"publisher","DOI":"10.1007\/s002280050512"},{"key":"e_1_2_6_11_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.2042-7158.1979.tb13568.x"},{"key":"e_1_2_6_12_2","doi-asserted-by":"publisher","DOI":"10.1177\/0091270003258651"},{"key":"e_1_2_6_13_2","doi-asserted-by":"publisher","DOI":"10.2165\/00003088-200544010-00003"},{"key":"e_1_2_6_14_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2125.2005.02429.x"},{"key":"e_1_2_6_15_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-3476(78)80529-0"}],"container-title":["Arthritis Care &amp; Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fart.23341","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/art.23341","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,10]],"date-time":"2023-10-10T22:40:31Z","timestamp":1696977631000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/art.23341"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2008,1,31]]},"references-count":14,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2008,2,15]]}},"alternative-id":["10.1002\/art.23341"],"URL":"https:\/\/doi.org\/10.1002\/art.23341","archive":["Portico"],"relation":{},"ISSN":["0893-7524","1529-0123"],"issn-type":[{"value":"0893-7524","type":"print"},{"value":"1529-0123","type":"electronic"}],"subject":[],"published":{"date-parts":[[2008,1,31]]}}}