TABLE 3

Metformin hepatobiliary disposition in single-pass rat liver perfusions

Livers were perfused with 10 μM metformin for 30 minutes and then with blank buffer for an additional 30 minutes. Data are presented as the mean 6 S.E.M. n = 6 (0–30 minutes); n = 3 (30–60 minutes and liver values).

Recovery of Perfused Drug During 0-30-min Metformin Perfusion (% Perfused Dose)
 Bile0.021 ± 0.003
 Liver (30 min)2.4 ± 0.3
 Perfusate97.6 ± 11.6
 Total99.1 ± 11.1
Recovery of Hepatic Metformin During 30-60-min Washout Perfusion (% of Hepatic Metformin Content at the end of 30-min Metformin Perfusion)
 Bile0.222 ± 0.003
 Liver (60 min)1.9 ± 0.3
 Perfusate74.0 ± 39.3
 Total76.1 ± 39.5