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- W2034372248 abstract "The aim of this study was to investigate the possibility of developing different levels of correlation between in vitro release and in vivo absorption rate for four modified-release levosimendan capsule formulations. Differences and similarities in the in vitro dissolution curves were compared with pharmacokinetic parameters describing absorption rate. Formulations F, G, H and I differed in the amounts of the delaying excipients alginic acid and HPMC. In vitro release rate was studied by the USP basket method using the following conditions: pH 5.8 or 7.4 and a rotation speed of 50 or 100 rpm. In vivo bioavailability was tested in nine healthy male volunteers and the fractions absorbed were calculated by the Wagner-Nelson method. Dissolution conditions pH 5.8 and a rotation speed of 100 rpm predicted best the similarities and differences in absorption rates among different formulations, and levels C and B correlation coefficients were 0.85 and 0.97, respectively. For formulation H level A correlation (r=0.997) was found when in vitro lag time was 0.2 h and time scale factor 1.9. This study indicated that dissolution tests developed can be used as a surrogate for human bioequivalence studies, for development processes of final commercial products, to ensure batch to batch bioequivalence and in the future in possible scale-up and post approval change cases for modified-release levosimendan formulation H." @default.
- W2034372248 created "2016-06-24" @default.
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- W2034372248 date "2002-07-01" @default.
- W2034372248 modified "2023-09-25" @default.
- W2034372248 title "Development of level A, B and C in vitro–in vivo correlations for modified-release levosimendan capsules" @default.
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- W2034372248 doi "https://doi.org/10.1016/s0378-5173(02)00137-0" @default.
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