{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T05:18:35Z","timestamp":1782796715565,"version":"3.54.5"},"reference-count":45,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2017,1,29]],"date-time":"2017-01-29T00:00:00Z","timestamp":1485648000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Brit J Clinical Pharma"],"published-print":{"date-parts":[[2017,7]]},"abstract":"<jats:sec><jats:title>Aims<\/jats:title><jats:p>Diabetes mellitus can inhibit cytochrome P450 3A4, an enzyme responsible for the metabolism of nifedipine, used for the treatment of hypertension in pregnant women. We aimed to assess the effect of type 2 diabetes mellitus (T2DM) on the pharmacokinetics, placental transfer and distribution of nifedipine in amniotic fluid in hypertensive pregnant women.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The study was conducted in 12 hypertensive pregnant women [control group (CG)] and 10 hypertensive pregnant women with T2DM taking slow\u2010release nifedipine (20\u00a0mg, 12\/12\u00a0h). On the 34th week of gestation, serial blood samples were collected (0\u201312\u00a0h) after administration of the medication. At delivery, samples of maternal and fetal blood and amniotic fluid were collected for determination of nifedipine distribution in these compartments.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The median pharmacokinetic parameters of CG were: peak plasma concentration (C<jats:sub>max<\/jats:sub>) 26.41\u00a0ng\u00a0ml<jats:sup>\u22121<\/jats:sup>, time to reach C<jats:sub>max<\/jats:sub> (t<jats:sub>max<\/jats:sub>) 1.79\u00a0h, area under the plasma concentration <jats:italic>vs.<\/jats:italic> time curve from 0\u201312\u00a0h (AUC<jats:sub>0\u201312<\/jats:sub>) 235.99\u00a0ng.h\u00a0ml<jats:sup>\u22121<\/jats:sup>, half\u2010life (t\u00bd) 4.34\u00a0h, volume of distribution divided by bioavailability (Vd\/F) 560.96\u00a0l, and Cl<jats:sub>T<\/jats:sub>\/F 84.77\u00a0l\u00a0h<jats:sup>\u22121<\/jats:sup>. The parameters for T2DM group were: C<jats:sub>max<\/jats:sub> 23.52\u00a0ng\u00a0ml<jats:sup>\u22121<\/jats:sup>, t<jats:sub>max<\/jats:sub> 1.48\u00a0h, AUC<jats:sub>0\u201312<\/jats:sub> 202.23\u00a0ng.h\u00a0ml<jats:sup>\u22121<\/jats:sup>, t\u00bd 5.00\u00a0h, Vd\/F 609.40\u00a0l, and apparent total clearance (Cl<jats:sub>T<\/jats:sub>\/F) 98.94\u00a0l\u00a0h<jats:sup>\u22121<\/jats:sup>. The ratios of plasma concentrations of nifedipine in the umbilical vein, intervillous space and amniotic fluid to those in the maternal vein for CG and T2DM were 0.53 and 0.44, 0.78 and 0.87, respectively, with an amniotic fluid\/maternal plasma ratio of 0.05 for both groups. The ratios of plasma concentrations in the umbilical artery to those in the umbilical vein were 0.82 for CG and 0.88 for T2DM.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>There was no influence of T2DM on the pharmacokinetics or placental transfer of nifedipine in hypertensive women with controlled diabetes.<\/jats:p><\/jats:sec>","DOI":"10.1111\/bcp.13226","type":"journal-article","created":{"date-parts":[[2017,1,2]],"date-time":"2017-01-02T15:02:40Z","timestamp":1483369360000},"page":"1571-1579","source":"Crossref","is-referenced-by-count":19,"title":["Effect of type 2 diabetes mellitus on the pharmacokinetics and transplacental transfer of nifedipine in hypertensive pregnant women"],"prefix":"10.1111","volume":"83","author":[{"given":"Gabriela Campos de Oliveira","family":"Filgueira","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology, Ribeir\u00e3o Preto Medical School University of S\u00e3o Paulo  Ribeir\u00e3o Preto 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