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Pharmacokinetics of liposome-entrapped cis-bis-neodecanoato-trans-R,R-1,2-diaminocyclohexane platinum(II) and cisplatin given i.v. and i.p. in the rat. 1992

K Vadiei, and Z H Siddik, and A R Khokhar, and S al-Baker, and F Sampedro, and R Perez-Soler
Department of Medical Oncology, University of Texas M. D. Anderson Cancer Center, Houston 77030.

The pharmacokinetics of liposome-entrapped cis-bis-neodecanoato-trans-R,R-1,2-diaminocyclohexane platinum(II) (L-NDDP) and cisplatin (CDDP) were studied after i.v. and i.p. administration of an equimolar dose (11 and 5 mg/kg for L-NDDP and CDDP, respectively) in the rat. The systemic absorption following i.p. administration was faster in rats receiving CDDP than in those receiving L-NDDP. Peak serum platinum (Pt) levels were observed at 30 min and 12 h after the i.p. administration of CDDP and L-NDDP, respectively. Administration by the i.v. route did not significantly alter the serum Pt levels for either compound. However, serum Pt levels were 2-3 times greater in animals treated with L-NDDP than in those treated with CDDP. The estimated pharmacokinetic parameters for each drug were independent of the route of administration, except for the clearance (Cl) of CDDP, which increased 2-fold following i.p. administration. In addition, significant differences in pharmacokinetic parameters were observed between drug-treatment groups that were independent of the route of administration: the serum Pt area under the concentration-time curve (AUC) was higher and the volume of distribution at steady state (Vdss) was lower in rats receiving L-NDDP. Pt levels measured at 6 h in the peritoneal fluid, peritoneal tissue, and intestine of rats receiving i.p. L-NDDP were higher than those observed in rats receiving either i.v. L-NDDP or CDDP by either route. Pt levels measured in the liver and spleen of rats receiving L-NDDP were independent of the route of administration and were significantly higher than those determined in rats treated with CDDP. In contrast, kidney Pt levels were lower in rats receiving L-NDDP than in rats receiving CDDP by either route. These results suggest that the prolongation of the mean retention time of L-NDDP in the peritoneum achieved after i.p. administration without compromising the systemic distribution of the drug may result in a significant enhancement of the therapeutic efficacy of L-NDDP against malignancies confined to the peritoneal cavity as compared with that of i.p. CDDP.

UI MeSH Term Description Entries
D007274 Injections, Intraperitoneal Forceful administration into the peritoneal cavity of liquid medication, nutrient, or other fluid through a hollow needle piercing the abdominal wall. Intraperitoneal Injections,Injection, Intraperitoneal,Intraperitoneal Injection
D007275 Injections, Intravenous Injections made into a vein for therapeutic or experimental purposes. Intravenous Injections,Injection, Intravenous,Intravenous Injection
D007668 Kidney Body organ that filters blood for the secretion of URINE and that regulates ion concentrations. Kidneys
D008081 Liposomes Artificial, single or multilaminar vesicles (made from lecithins or other lipids) that are used for the delivery of a variety of biological molecules or molecular complexes to cells, for example, drug delivery and gene transfer. They are also used to study membranes and membrane proteins. Niosomes,Transferosomes,Ultradeformable Liposomes,Liposomes, Ultra-deformable,Liposome,Liposome, Ultra-deformable,Liposome, Ultradeformable,Liposomes, Ultra deformable,Liposomes, Ultradeformable,Niosome,Transferosome,Ultra-deformable Liposome,Ultra-deformable Liposomes,Ultradeformable Liposome
D008099 Liver A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances. Livers
D008297 Male Males
D009944 Organoplatinum Compounds Organic compounds which contain platinum as an integral part of the molecule. Compounds, Organoplatinum
D010984 Platinum A heavy, soft, whitish metal, resembling tin, with atomic number 78, atomic weight 195.084, symbol Pt. It is used in manufacturing equipment for laboratory and industrial use. It occurs as a black powder (platinum black) and as a spongy substance (spongy platinum) and may have been known in Pliny's time as "alutiae". Platinum Black
D011919 Rats, Inbred Strains Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding. August Rats,Inbred Rat Strains,Inbred Strain of Rat,Inbred Strain of Rats,Inbred Strains of Rats,Rat, Inbred Strain,August Rat,Inbred Rat Strain,Inbred Strain Rat,Inbred Strain Rats,Inbred Strains Rat,Inbred Strains Rats,Rat Inbred Strain,Rat Inbred Strains,Rat Strain, Inbred,Rat Strains, Inbred,Rat, August,Rat, Inbred Strains,Rats Inbred Strain,Rats Inbred Strains,Rats, August,Rats, Inbred Strain,Strain Rat, Inbred,Strain Rats, Inbred,Strain, Inbred Rat,Strains, Inbred Rat
D002945 Cisplatin An inorganic and water-soluble platinum complex. After undergoing hydrolysis, it reacts with DNA to produce both intra and interstrand crosslinks. These crosslinks appear to impair replication and transcription of DNA. The cytotoxicity of cisplatin correlates with cellular arrest in the G2 phase of the cell cycle. Platinum Diamminodichloride,cis-Diamminedichloroplatinum(II),cis-Dichlorodiammineplatinum(II),Biocisplatinum,Dichlorodiammineplatinum,NSC-119875,Platidiam,Platino,Platinol,cis-Diamminedichloroplatinum,cis-Platinum,Diamminodichloride, Platinum,cis Diamminedichloroplatinum,cis Platinum

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