[Clinical efficacy of intratumoral administration of BRM in advanced cancer and their mechanism of actions].
The clinical efficacy of intratumoral (IT) administration of BRM in 157 patients with unresectable or recurrent tumors was investigated, and the infiltration of lymphocyte subsets into tumor tissues after IT administration of BRM was immunohistologically examined, to analyse its action mechanism. BRMs used in this study were OK-432, tumor necrosing factor (TNF), whole peptide glucagon (WPG), interferon (IFN)-alpha, IFN-beta, IFN-gamma and interleukin-2 (IL-2). Among them, one hundred thirty-one patients were evaluable for clinical effects, and the therapeutic response rate (CR + PR) was determined in 11/131 (8.4%). Higher therapeutic responses were found in the patients with esophageal cancer, pancreatic cancer and breast cancer, respectively. As for the relationship between the clinical efficacy of IT administration of BRM and the injected sites, the injection into metastatic lesions was more effective than that into the primary or local recurrence. A increase of lymphocyte infiltration after IT BRM immunotherapy and a variety of lymphocyte subsets in tumor tissue injected with any BRMs were found immunohistologically. These results suggest that IT BRM immunotherapy may be effective for the control of tumor growth locally through host-mediated action.
Kuninobu
H
H
Dept. of Surgery, Hiroshima University.
Toge
T
T
Takayama
T
T
Baba
N
N
Kegoya
Y
Y
Yanagawa
E
E
D000276:Adjuvants, Immunologic / Q000008:administration & dosage / Q000494:pharmacology / Q000627:therapeutic use*; D004341:Drug Evaluation; D005934:Glucagon / Q000627:therapeutic use; D006801:Humans; D007150:Immunohistochemistry; D007267:Injections / Q000379:methods; D008214:Lymphocytes / Q000145:classification; D009369:Neoplasms / Q000276:immunology / Q000628:therapy*; D010844:Picibanil / Q000627:therapeutic use; D012074:Remission Induction; D014409:Tumor Necrosis Factor-alpha / Q000627:therapeutic use
D000276:Adjuvants, Immunologic; D014409:Tumor Necrosis Factor-alpha; D010844:Picibanil; D005934:Glucagon