[Pharmacokinetic study of intraperitoneal chemotherapy with mitomycin C bound to activated carbon particles].
OBJECTIVE
To analyze the pharmacokinetics of intraperitoneal chemotherapy with mitomycin C (MMC) bound to activated carbon particles.


METHODS
A nude mouse model with transplanted human gastric cancer was established. The mice were given MMC by i.v. or intraperitoneal (i.p.) injections, or given i.p. MMC bound to activated carbon particles (MMC-CH). Pharmacokinetic assays were carried out at different time points (0.5, 1, 2, 3, 6, 12 and 24 h) in 7 mice per each time point, to compare the MMC concentrations revealed by the above mentioned methods.


RESULTS
The MMC concentration in peritoneal exudate, omentum and lymph nodes of MMC-CH group was significantly higher than that of MMC solution i.p. group and MMC i.v. group (P < 0.001). On the other hand, the MMC level in serum was significantly lower than that in two control groups (P < 0.001). High MMC level was maintained longer than 24 hours in the MMC-CH group. Intraperitoneal chemotherapy with MMC solution resulted in a low MMC concentration in serum, peritoneal exudates and lymph nodes, and only a transient high level of MMC in the omentum. After i.v. administration, a significantly higher level of MMC concentration occurred in the serum, but only a shortly increased concentration of MMC in the omentum, and lower concentration in peritoneal exudate and lymph nodes as compared with those in the other two groups (P < 0.001).


CONCLUSIONS
High concentration of MMC in peritoneal exudate, omentum and lymph nodes maintained longer than 24 hours and a significantly lower MMC serum concentration can be achieved by administration of intraperitoneal administration of MMC bound to activated carbon particles.
Liang
Han
H
Department of Gastroenterological Oncology, Tianjin Cancer Hospital, Tianjin Medical University, Tianjin 300060, China. hanliang86@yahoo.com
Tang
He-wen
HW
Hao
Xi-shan
XS
Sun
Hui
H
Li
Wen
W
D000818:Animals; D000903:Antibiotics, Antineoplastic / Q000008:administration & dosage / Q000493:pharmacokinetics; D002606:Charcoal / Q000008:administration & dosage / Q000493:pharmacokinetics*; D005260:Female; D006801:Humans; D007274:Injections, Intraperitoneal; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D008819:Mice, Nude; D016685:Mitomycin / Q000008:administration & dosage / Q000493:pharmacokinetics*; D009368:Neoplasm Transplantation; D013274:Stomach Neoplasms / Q000188:drug therapy / Q000378:metabolism* / Q000473:pathology
D000903:Antibiotics, Antineoplastic; D002606:Charcoal; D016685:Mitomycin