title: Brazilin augments cellular immunity in multiple low dose streptozotocin (MLD-STZ) induced type I diabetic mice.
abstract: Brazilin, an active principle of Caesalprenia sappan, was examined for its immunopotentiating effects in multiple low dose streptozotocin (MLD-STZ) induced type diabetic mice. Brazilin was intraperitoneally administered for 5 consecutive days to MLD-STZ induced type I diabetic mice. Delayed type hypersensitivity, Con A-induced proliferation of splenocytes and mixed lymphocyte reaction, which had been decreased in diabetic mice, were significantly recovered by the administration of brazilin. Brazilin increased IL-2 production without affecting suppressor cell activity. Con A-induced and IL-2-induced expression of high affinity IL-2 receptors were also enhanced by brazilin. These results indicate that brazilin augments cellular immune responses, which are suppressed in the MLD-STZ induced type I diabetic mice, by increasing IL-2 production and responsiveness of immune cells to IL-2.
authors.affiliation: College of Pharmacy, Seoul National University, Kwanak-ku, Korea.
authors.forename: K M
authors.initials: KM
authors.lastname: Yang
authors.forename: S D
authors.initials: SD
authors.lastname: Jeon
authors.forename: D S
authors.initials: DS
authors.lastname: So
authors.forename: C K
authors.initials: CK
authors.lastname: Moon
mesh_terms: D000276:Adjuvants, Immunologic / Q000494:pharmacology; D000818:Animals; D001578:Benzopyrans / Q000494:pharmacology*; D002455:Cell Division / Q000187:drug effects; D003208:Concanavalin A / Q000378:metabolism; D016572:Cyclosporine / Q000494:pharmacology; D003921:Diabetes Mellitus, Experimental / Q000276:immunology* / Q000378:metabolism; D006968:Hypersensitivity, Delayed / Q000276:immunology / Q000378:metabolism; D007004:Hypoglycemic Agents / Q000494:pharmacology*; D007111:Immunity, Cellular / Q000187:drug effects*; D007376:Interleukin-2 / Q000096:biosynthesis; D007959:Lymphocyte Culture Test, Mixed; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D015375:Receptors, Interleukin-2 / Q000096:biosynthesis; D013154:Spleen / Q000166:cytology / Q000276:immunology / Q000378:metabolism; D050378:T-Lymphocytes, Regulatory / Q000187:drug effects / Q000276:immunology
chemical_list: D000276:Adjuvants, Immunologic; D001578:Benzopyrans; D007004:Hypoglycemic Agents; D007376:Interleukin-2; D015375:Receptors, Interleukin-2; D003208:Concanavalin A; D016572:Cyclosporine; C044362:brazilin