title: Cell proliferation and natural killer cell activity by polyherbal formulation, Immu-21 in mice.
abstract: Immunomodulatory activity of an Ayurvedic polyherbal formulation, Immu-21 containing extracts of Ocimum sanctum, Withania somnifera, Emblica officinalis and Tinospora cordifolia was studied on proliferative response of splenic leukocytes to T cell mitogens, concanavalin (Con)-A and phytohemagglutinin (PHA) and B cell mitogen, lipopolysaccharide (LPS) in vitro by [3H]-thymidine uptake assay in mice. The cytotoxic activity of Immu-21 was tested by measuring the splenic leukocyte natural killer (NK) cell activity against K 562 cells. Intraperitoneal (i.p.) treatment with Immu-21 (30 mg/kg) once a day for 14 and 21 days did not cause change in body weight and spleen weight, where as splenocytes/spleen count was increased. Treatment of Immu-21 (30 mg/kg, i.p.) for 14 days and 1 mg/kg for 21 days significantly increased LPS induced leukocyte proliferation. NK cell activity was significantly increased when mice were pretreated with Immu-21 (10 and 30 mg/kg, i.p.) once a day for 7 days. The results indicate that pretreatment with Immu-21 selectively increased the proliferation of splenic leukocyte to B cell mitogen, LPS and cytotoxic activity against K 562 cells in mice.
authors.affiliation: Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Sector-67, S. A. S. Nagar 160 062, India.
authors.forename: Kumar V S
authors.initials: KV
authors.lastname: Nemmani
authors.forename: G B
authors.initials: GB
authors.lastname: Jena
authors.forename: C S
authors.initials: CS
authors.lastname: Dey
authors.forename: C L
authors.initials: CL
authors.lastname: Kaul
authors.forename: P
authors.initials: P
authors.lastname: Ramarao
mesh_terms: D000276:Adjuvants, Immunologic / Q000494:pharmacology; D001402:B-Lymphocytes / Q000187:drug effects / Q000276:immunology; D003602:Cytotoxicity, Immunologic / Q000187:drug effects; D006801:Humans; D020014:K562 Cells; D007694:Killer Cells, Natural / Q000187:drug effects* / Q000276:immunology*; D008213:Lymphocyte Activation / Q000187:drug effects*; D008515:Medicine, Ayurvedic; D010936:Plant Extracts / Q000494:pharmacology; D010946:Plants, Medicinal; D013601:T-Lymphocytes / Q000187:drug effects / Q000276:immunology
chemical_list: D000276:Adjuvants, Immunologic; D010936:Plant Extracts