title: FCE20696, a new synthetic immunomodulator: immunopharmacological profile.
abstract: A preliminary characterization of the immunopharmacological profile of the new immunomodulating agent FCE20696 (6H,6[2-(dimethylamino)-ethoxycarbonyl]-dibenzo[b,d]pyran-HCl) was performed in mice. Single i.p. doses of this chemical, concomitantly given with the antigen, increased the antibody response and decreased the delayed hypersensitivity reaction to a suboptimal dose of SRBC, the active doses ranging from 6.25 to 50 mg/kg. No activity was observed using a full antigen dose. Macrophage cytotoxic activity was enhanced 2-4 days after a single i.p. treatment with 50 and 10 mg/kg. Spleen cell proliferation to T and B mitogens was inhibited by a single dose of 30 mg/kg given i.p. 6 days before the test, or by 10 mg/kg x 3 days ending one day before the test. Finally, generation of suppressor cells was enhanced by the compound, given p.o. biweekly for at least 7 weeks, at doses ranging from 0.1 to 10 mg/kg. Collectively taken, these data suggest that FCE20696 has a broad range of immunomodulating activities and that macrophages and suppressor cells are presumed to be the main targets of its pharmacological activity.
authors.affiliation: Immunology Line, Farmitalia Carlo Erba, R & D, Erbamont Group, Milan, Italy.
authors.forename: A M
authors.initials: AM
authors.lastname: Isetta
authors.forename: M C
authors.initials: MC
authors.lastname: Fornasiero
authors.forename: M
authors.initials: M
authors.lastname: Ferrari
authors.forename: D
authors.initials: D
authors.lastname: Trizio
mesh_terms: D000276:Adjuvants, Immunologic / Q000494:pharmacology*; D000818:Animals; D000917:Antibody Formation / Q000187:drug effects; D001578:Benzopyrans / Q000494:pharmacology*; D002455:Cell Division / Q000187:drug effects; D003602:Cytotoxicity, Immunologic / Q000187:drug effects; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D006968:Hypersensitivity, Delayed / Q000188:drug therapy; D008264:Macrophages / Q000187:drug effects; D051379:Mice; D008810:Mice, Inbred C57BL; D008934:Mitogens / Q000037:antagonists & inhibitors; D010529:Peritoneal Cavity / Q000166:cytology; D013154:Spleen / Q000166:cytology / Q000187:drug effects; D050378:T-Lymphocytes, Regulatory / Q000187:drug effects
chemical_list: C051455:6H,6-(2-(dimethylamino)ethoxycarbonyl)dibenzo(b,d)pyran; D000276:Adjuvants, Immunologic; D001578:Benzopyrans; D008934:Mitogens