title: Immunosuppressive properties of an ethyl acetate fraction from Euphorbia royleana.
abstract: The objective of the study was to investigate the activity of the ethyl acetate (EA) fraction of Euphorbia royleana latex on cellular and humoral-mediated immune responses and phagocytic function of the cells of the reticuloendothelial system in mice. Oral administration of EA at doses of 50, 100 and 200 mg/kg p.o. in mice with sheep red blood cells (SRBC) as an antigen-inhibited both the delayed-type hypersensitivity reaction and the production of circulating antibody titre. Reduction of CD4+ T cell counts in the peripheral whole blood and the neutrophil counts in pleural exudates of the animals treated with EA was observed by flowcytometric analysis. Process of phagocytosis was also inhibited in in vivo and in vitro experimental test models. The oral LD50 in both rats and mice was more than 2.5 g/kg body weight.
authors.affiliation: Division of Pharmacology, Regional Research Laboratory, Canal Road, Jammu Tawi 180001, India. sarangbani@rediffmail.com
authors.forename: Sarang
authors.initials: S
authors.lastname: Bani
authors.forename: Anpurna
authors.initials: A
authors.lastname: Kaul
authors.forename: Beenish
authors.initials: B
authors.lastname: Khan
authors.forename: Sheikh Fayaz
authors.initials: SF
authors.lastname: Ahmad
authors.forename: K A
authors.initials: KA
authors.lastname: Suri
authors.forename: N K
authors.initials: NK
authors.lastname: Satti
authors.forename: Musarat
authors.initials: M
authors.lastname: Amina
authors.forename: G N
authors.initials: GN
authors.lastname: Qazi
mesh_terms: D000284:Administration, Oral; D000818:Animals; D004306:Dose-Response Relationship, Immunologic; D004912:Erythrocytes / Q000276:immunology; D028481:Euphorbia; D006968:Hypersensitivity, Delayed / Q000276:immunology; D007111:Immunity, Cellular / Q000187:drug effects; D007166:Immunosuppressive Agents / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D007840:Latex / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D009504:Neutrophils / Q000187:drug effects*; D010587:Phagocytosis / Q000187:drug effects; D008517:Phytotherapy; D051381:Rats; D012756:Sheep
chemical_list: D007166:Immunosuppressive Agents; D007840:Latex