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Research Article Selective Th2 Upregulation by Crocus sativus:

By A Neutraceutical Spice, Sarang Bani, Anjali P, Vijai K. Agnihotri, Vijaylata Pathania and Bikram Singh

Abstract

which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The immunomodulatory activity of an Indian neutraceutical spice, saffron (Crocus sativus) was studied on Th1 and Th2 limbs of the immune system. Oral administration of alcoholic extract of Crocus sativus (ACS) at graded dose levels from 1.56–50 mg/kg p.o. potentiated the Th2 response of humoral immunity causing the significant increases in agglutinating antibody titre in mice at a dose of 6.25 mg/kg and an elevation of CD19 + B cells and IL-4 cytokine, a signature cytokine of Th2 pathway. Appreciable elevation in levels of IgG-1 and IgM antibodies of the primary and secondary immune response was observed. However, ACS showed no appreciable expression of the Th1 cytokines IL-2 (growth factor for CD4 + Tcells)andIFN-γ (signature cytokine of Th1 response). A significant modulation of immune reactivity was observed in all the animal models used. This paper represents the selective upregulation of the Th2 response of the test material and suggests its use for subsequent selective Th2 immunomodulation. 1

Year: 2013
OAI identifier: oai:CiteSeerX.psu:10.1.1.352.780
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