PMID: 2121337Nov 15, 1990Paper

Intraperitoneal recombinant gamma-interferon in patients with recurrent ascitic ovarian carcinoma: modulation of cytotoxicity and cytokine production in tumor-associated effectors and of major histocompatibility antigen expression on tumor cells

Cancer Research
P AllavenaC Mangioni

Abstract

Seven patients with advanced epithelial carcinoma and ascites, relapsing after two or more regimens of standard chemotherapy, have been treated with recombinant gamma-interferon (rIFN-gamma) i.p., via a permanent catheter. rIFN-gamma (Immuneron; Biogen; 0.5 mg = 10(7) IU in 2 liters of saline) was administered 3 times a week, on alternate weeks, for a total of nine courses. No major toxicities were observed: mild fever, malaise, and a flu-like syndrome occurred in all patients. The modulation of immunological parameters was studied. Cytotoxic activity of immunocompetent cells against tumor cell lines was measured both in the peritoneal compartment and in peripheral blood mononuclear cells. A significant increase of cytotoxicity of tumor-associated macrophages was observed in 5 of 7 patients and in 4 of 7 patients with tumor-associated peritoneal lymphocytes. Circulating effector cells were only occasionally stimulated. Tumor-associated macrophages isolated from the ascitic fluid and stimulated with lipopolysaccharide produced higher amounts of interleukin 1 in 5 of 6 patients tested, while interleukin 6 production by unstimulated tumor-associated macrophages was augmented in 2 of 2 patients after rIFN-gamma treatment. Freshly i...Continue Reading

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