| Full text | |
| Author(s): |
Boralli, Vanessa Bergamin
[1]
;
Coelho, Eduardo Barbosa
[2]
;
Sampaio, Stefania Amaral
[1]
;
Marques, Maria Paula
[1]
;
Lanchote, Vera Lucia
[1]
Total Authors: 5
|
| Affiliation: | [1] Univ Sao Paulo, Fac Ciencias Farmaceut Ribeirao Preto, BR-14049 Ribeirao Preto - Brazil
[2] Univ Sao Paulo, Fac Med Ribeirao Preto, BR-14049 Ribeirao Preto - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | Journal of Clinical Pharmacology; v. 49, n. 2, p. 205-211, Feb. 2009. |
| Field of knowledge: | Health Sciences - Pharmacy |
| Web of Science Citations: | 6 |
| Abstract | |
Hypertension and dyslipidemia are independent risk factors for cardiovascular mortality and are frequently present in the same patient. Fluvastatin (FV), used to reduce cholesterol levels, and lercanidipine (LER), used to control blood pressured are marketed as racemic mixtures. Therapeutic activities are 30-fold higher for (+)-3R,5S-FV and 100- to 200-fold higher for S-LER compared with their respective antipodes. The present study describes the enantioselective pharmacokinetic interaction between LER and FV in healthy volunteers. A crossover randomized study was conducted in 3 phases on 8 volunteers treated with a single oral racemic dose of LER (20 mg) or FV (40 mg) or LER plus FV. Serial blood samples were collected from 0 to 24 hours. Plasma concentrations of the LER and FV enantiomers were determined by liquid chromatography/tandem mass spectrometry, and pharmacokinetic parameters were evaluated using the WinNonlin software. The Wilcoxon and Mann-Whitney tests (P < .05) were used to analyze enantiomer ratios and the pharmacokinetic drug interaction. Data are expressed as medians. In monotherapy, the kinetic disposition of both FV and LER was enantioselective. AUC values were significantly higher for (-)-3S,5R-FV than for (+)-3R,5S-FV (358.20 vs 279.68 ng.h/mL) and for S-LER compared with R-LER (13.90 vs 11.88 ng.h/mL). The pharmacokinetic parameters of FV were not enantioselective when combined with LER (AUC: (-)-3S,5R-FV: 325.21; (+)-3R,5S-FV: 316.44 ng.h/mL). There was a significant reduction in S-LER (8.06 vs 13.90 ng.h/mL) and R-LER (6.76 vs 11.88 ng.h/mL) AUC values when FV was coadministered. In conclusion, the interaction between FV-LER might be clinically relevant because AUC values of (+)-3R,5S-FV were increased when LER was coadministered, and AUC values of the 2 LER enantiomers were reduced when FV was coadministered. (AU) | |