title: [Intraperitoneal (Ip) administration of cisplatin in combination with systemic chemotherapy in patients with malignant ascites of gastrointestinal cancer: clinical evaluation and pharmacokinetics].
abstract: Ten patients with carcinomatous peritonitis of gastrointestinal cancer have been treated with administrations of CDDP-Ip (50-150 mg/body), in combination with systemic chemotherapy simultaneously combined with sodium thiosulfate (STS) iv in 4 patients. All patients received transfusions of specific hydration. The pharmacokinetics of CDDP was studied in 4 patients, and the following results were obtained. (1) As for its effect on malignant ascites, according to Koyama's and Saito's criteria, 2 patients showed a complete response, 3 showed a partial response, and 5 showed no change. (2) As for its effect on the primary site, only one patient showed a partial response, and the others no change. (2) As to its side effects, 6 patients manifested nausea and vomiting, and only one showed a mild kidney dysfunction, and no myelosuppression. No significant difference in the side effects between the STS-combined group and the non-STS-combined group was found. (3) Serum CDDP levels were reached maximum 1-2 hours after Ip, and gradually decreased during the beta-phase of iv administration. Significant levels of non-protein-bound CDDP were found in the serum within 4 hours after Ip. These results indicate that the CDDP Ip is safe and useful for carcinomatous peritonitis of gastrointestinal cancer, however the combination of STS might weaken the systemic anti-cancer effect of CDDP by neutralizing the non-protein-bound CDDP in the serum.
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D001202:Ascitic Fluid / Q000188:drug therapy* / Q000378:metabolism; D002945:Cisplatin / Q000008:administration & dosage* / Q000493:pharmacokinetics; D004317:Doxorubicin / Q000008:administration & dosage; D005260:Female; D005770:Gastrointestinal Neoplasms / Q000188:drug therapy* / Q000378:metabolism; D006801:Humans; D008297:Male; D008875:Middle Aged; D010190:Pancreatic Neoplasms / Q000188:drug therapy / Q000378:metabolism; D010529:Peritoneal Cavity; D005641:Tegafur / Q000008:administration & dosage; D013885:Thiosulfates / Q000008:administration & dosage; D014498:Uracil / Q000008:administration & dosage
chemical_list: D013885:Thiosulfates; D005641:Tegafur; D014498:Uracil; D004317:Doxorubicin; C017717:sodium thiosulfate; D002945:Cisplatin