Single dose pharmacokinetics of manidipine in hepatic impaired patients and healthy controls.
Int J Clin Pharmacol Ther
; 36(7): 386-91, 1998 Jul.
Article
em En
| MEDLINE
| ID: mdl-9707354
ABSTRACT
The pharmacokinetics and safety of a single oral dose of 20 mg manidipine dihydrochloride have been studied in 8 patients with mild to moderate hepatic impairment (grade A or B in Child's classification, or score < or = 7 in Pugh's modification of Child's classification), and in 12 healthy subjects. They received one 20 mg manidipine dihydrochloride tablet with 100 ml of tap water after a standard breakfast. Manidipine was determined using HPLC with electrochemical detection from plasma samples taken up to 24 or 36 h after dosing. The medication was well tolerated. A trend toward higher Cmax, AUC, and MRT was observed in patients with a more severe hepatic impairment, as a consequence of reduction in the liver metabolic function. Patients with grade A hepatic impairment did not exhibit significantly altered pharmacokinetics with respect to healthy subjects, while grade B impairment patients had significantly higher AUC and MRT. Tmax values pointed to reduced absorption rate in patients compared to healthy subjects; the changes were more evident in grade B than grade A patients, although statistical significance was not reached. The reduction in absorption rate in grade B patients is probably related to their higher mean age, since this effect has been reported for manidipine. The pharmacokinetics of manidipine seem only modified in patients with a certain degree of hepatic impairment (at least Pugh grade 6 and Child grade B); therefore, adaptation of the dosing regimen does not seem to be generally recommendable, but should be modulated according to the liver status of the patient.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Di-Hidropiridinas
/
Cirrose Hepática Alcoólica
/
Anti-Hipertensivos
Tipo de estudo:
Clinical_trials
/
Prognostic_studies
Limite:
Adult
/
Aged
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Int J Clin Pharmacol Ther
Assunto da revista:
FARMACOLOGIA
/
TERAPIA POR MEDICAMENTOS
Ano de publicação:
1998
Tipo de documento:
Article
País de afiliação:
Bélgica