title: Effect of abrin on cell-mediated immune responses in mice.
abstract: Effect of abrin isolated from Abrus precatorius on the cellular immune responses was studied in normal as well as tumor-bearing animals. Administration of abrin was found to enhance the proliferation of splenocytes and thymocytes (lymphocytes in general) in responses to mitogens. Natural killer cell activity was enhanced significantly by abrin in both the normal (49.8% cell lysis on day 9) and the tumor-bearing group (51.7% cell lysis on day 9), and it was found to be earlier than the control. Antibody dependent cellular cytotoxicity was enhanced in the abrin treated tumor-bearing group on the ninth day (44% cell lysis). An early antibody dependent complement mediated cytotoxicity was observed in the abrin treated group on day 15 (27.6% cell lysis). Results of our present study suggest the immunomodulatory property of abrin.
authors.affiliation: Department of Physiology, College of Veterinary and Animal Sciences, Mannuthy, Kerala, India.
authors.forename: V
authors.initials: V
authors.lastname: Ramnath
authors.forename: Girija
authors.initials: G
authors.lastname: Kuttan
authors.forename: Ramadasan
authors.initials: R
authors.lastname: Kuttan
mesh_terms: D000036:Abrin / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D029912:Abrus / Q000737:chemistry; D000818:Animals; D000920:Antibody-Dependent Cell Cytotoxicity / Q000187:drug effects* / Q000276:immunology; D049109:Cell Proliferation / Q000187:drug effects; D006801:Humans; D007155:Immunologic Factors / Q000737:chemistry / Q000276:immunology* / Q000302:isolation & purification; D020014:K562 Cells; D007694:Killer Cells, Natural / Q000276:immunology*; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D009374:Neoplasms, Experimental / Q000188:drug therapy / Q000276:immunology*; D008517:Phytotherapy; D013154:Spleen / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology; D013997:Time Factors
chemical_list: D007155:Immunologic Factors; D000036:Abrin