title: [Pharmacokinetics and toxicity of intrathecal administration of recombinant interleukin 2].
abstract: In order to contribute to the development of adoptive immunotherapy against malignant brain tumors, the pharmacokinetics and toxicity of intrathecally administered recombinant interleukin-2 in dogs and human patients were analyzed. The pharmacokinetics showed that a high concentration of IL-2 was maintained in the intrathecal cavity in both dogs and human (t1/2 = 1.41 and 1.68 hours, respectively) after administration. However, no activity of IL-2 was detected in the cerebrospinal fluid after the systemic administration of rIL-2 in one dog. No meningitis, ventriculitis or degeneration of neurons was seen histopathologically in dogs 3 weeks after the intrathecal administration of rIL-2 (200 units). A high concentration of IL-2 in the tumor cavity was maintained for a very long time (t1/2 = 14.8 hours) after the intratumoral administration of rIL-2 in one of the patients. Although low-grade fever and mild headache were sometimes observed after the intrathecal administration of rIL-2 in patients, there was no other side effect mentioned. Intrathecal or intratumoral administration of rIL-2 appeared to be an valuable procedure which should be evaluated in conjunction with adoptive immunotherapy against malignant brain tumors.
mesh_terms: D000328:Adult; D000818:Animals; D001921:Brain / Q000378:metabolism; D001932:Brain Neoplasms / Q000378:metabolism / Q000473:pathology / Q000628:therapy*; D002648:Child; D004285:Dogs; D006801:Humans; D007278:Injections, Spinal; D007376:Interleukin-2 / Q000008:administration & dosage* / Q000134:cerebrospinal fluid / Q000276:immunology; D007700:Kinetics; D008297:Male
chemical_list: D007376:Interleukin-2