Cisplatin pharmacokinetics in nontumoral pig liver treated with intravenous or transarterial hepatic chemoembolization.
Cardiovasc Intervent Radiol
; 35(6): 1467-74, 2012 Dec.
Article
em En
| MEDLINE
| ID: mdl-22526107
ABSTRACT
PURPOSE:
To evaluate cisplatin (CDDP) pharmacokinetics after its intravenous (IV) or intrahepatic arterial administration (IHA) in healthy pigs with or without embolization by absorbable gelatine. MATERIAL ANDMETHODS:
We analysed plasmatic and hepatic drug concentration in four groups of six mini-pigs each according to the modality of administration of CDDP (1 mg/kg) IV, IHA, IHA with partial embolization using absorbable gelatine (IHA-Pe), and IHA with complete embolization (IHA-Te). Unbounded plasmatic and hepatic platinum concentrations were measured. Concentration and pharmacokinetics parameters were compared using analysis of variance.RESULTS:
For all groups, there was a rapid and biexponential decrease in free platinum concentration. Plasmatic terminal half-life (T(1/2)) was significantly decreased after embolization at 191, 178, 42, and 41 min after IV, IHA, IHA-Pe, and IHA-Te administration, respectively. Maximal plasmatic concentration and systemic exposure to CDDP (AUC(24)) values were significantly decreased after embolization (C(max) p = 0.0075; AUC(24) p = 0.0053). Hepatic CDDP concentration rapidly peaked and then decreased progressively. After 24 h, the residual concentration represented 45, 47, 60, and 63 % of C(max), respectively, after IV, IHA, IHA-Pe, and IHA-Te. Hepatic T(1/2) and AUC(∞) values were increased after embolization, but the differences were not statistically significant.CONCLUSION:
This preliminary study confirms the feasibility of a pig model to study systemic and hepatic CDDP pharmacokinetics. Systemic exposure is lower after embolization, which could minimize systemic toxicity. Hepatic T(1/2) elimination and hepatic exposition values are increased with IHA compared with IV administration.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cisplatino
/
Quimioembolização Terapêutica
/
Fígado
Limite:
Animals
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article