[Intratumoral pharmacokinetics following intraarterial administration of MCNU in patients with malignant gliomas].

Abstract

This clinical study was undertaken to examine intratumoral (i.t.) pharmacokinetics after intraarterial (i.a.) administration of MCNU (80mg/m2) in 5 patients with glioblastoma (GB) and 2 with anaplastic astrocytoma (AA). After resection or stereotactic biopsy of the cystic lesion, an Ommaya reservoir was placed into the tumor cavity in all patients. The distribution of MCNU in blood was compatible with a two-compartment model, and the half life of the alpha-phase and beta-phase was 4.1 minutes and 160.4 minutes, respectively. MCNU was detected in the i.t. fluid in 5 cases, 4 of GB and 1 of AA. The concentration of i.t. MCNU gradually increased during the 5 to 30 minutes after i.a. injection to a level about 20.0% of its blood concentration. However, no MCNU was detected in patients showing partial response (3 of GB and 1 of AA) or no change (1 of GB) after the i.a. infusion of MCNU during maintenance chemotherapy. These results suggests that MCNU may transfer into the tumor tissues. Further investigation is warranted.

• Authors: T Yamasaki, S Nagao, T Kagawa, S Konishi, Y Akiyama, M Fukuda, Y Kimura, K Moritake
• Journal: No shinkei geka. Neurological surgery (No Shinkei Geka) Vol. 23 Issue 11 Pg. 963-9 (Nov 1995) ISSN: 0301-2603 [Print] Japan
• PMID: 7477717 (Publication Type: Case Reports, English Abstract, Journal Article)

Chemical References

• Antineoplastic Agents
• Nitrosourea Compounds
• ranimustine

Topics

• Adolescent
• Adult
• Aged
• Antineoplastic Agents (administration & dosage, pharmacokinetics)
• Brain Neoplasms (drug therapy, metabolism)
• Female
• Glioblastoma (drug therapy, metabolism)
• Glioma (drug therapy, metabolism)
• Half-Life
• Humans
• Infusion Pumps, Implantable
• Infusions, Intra-Arterial
• Male
• Middle Aged
• Nitrosourea Compounds (administration & dosage, pharmacokinetics)