title: [Double channel chemotherapy with intra-arterial infusion of DDP and concurrent intra-venous infusion of sodium thiosulfate (STS) in bladder cancer].
abstract: Ten patients with bladder cancer were treated with double channel chemotherapy which included intra-arterial infusion of DDP and concurrent intra-venous infusion of STS, a neutralizing agent against DDP. The method allows the administration of a relatively high dose of DDP to localized malignant tumors by protection from systemic cytotoxicity of DDP by STS. DDP in a dose of 100-150 mg/m2 of body surface was infused either to the internal iliac artery at a portion close to the superior vesical artery or to the aortic bifurcation by the Seldinger technique over 30 minutes, and infusion of 20 g STS to the peripheral vein was simultaneously started and continued for 2-3 hours. One patient achieved a complete response and 2 patients achieved a partial response. The response rate was 30%. Histopathologically, 4 out of 8 patients showed an effect of 2 grades or more by Oboshi-Shimosato's criteria. Invasive or hypervascular tumors seem to be more responsive to the present treatment than superficial or hypovascular ones. Side effects were relatively mild inspite of a large dose of DDP. It should be noted that concurrent STS infusion efficiently counteracts the renal toxicity of DDP.
mesh_terms: D000328:Adult; D000368:Aged; D000931:Antidotes; D002945:Cisplatin / Q000008:administration & dosage / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D007269:Injections, Intra-Arterial; D007275:Injections, Intravenous; D008297:Male; D008875:Middle Aged; D013885:Thiosulfates / Q000008:administration & dosage / Q000627:therapeutic use*; D001749:Urinary Bladder Neoplasms / Q000188:drug therapy*
chemical_list: D000931:Antidotes; D013885:Thiosulfates; C017717:sodium thiosulfate; D002945:Cisplatin