PMID- 19159824 OWN - NLM STAT- MEDLINE DCOM- 20091007 LR - 20220330 IS - 1878-3279 (Electronic) IS - 0171-2985 (Linking) VI - 214 IP - 1 DP - 2009 TI - Aqueous extract of Rhodiola imbricata rhizome stimulates Toll-like receptor 4, granzyme-B and Th1 cytokines in vitro. PG - 27-31 LID - 10.1016/j.imbio.2008.04.001 [doi] AB - Rhodiola imbricata is a medicinal plant, native to mountainous regions of Asia, parts of Europe, and the Arctic. Traditionally it is recommended to help combat fatigue and restore energy. It exhibits anti-stress, anti-cancer, and immunostimulatory activities. However, the effect of Rhodiola on immunological responses largely remains unknown. In this study, we have investigated the effect of aqueous extract of R. imbricata rhizome (RAE), on Toll-like receptor-4 (TLR-4) and intracellular granzyme-B expression in mouse splenocytes. Furthermore, TH1/TH2 cytokine profile was analyzed in RAE-treated human peripheral blood mononuclear cells (PBMCs) using multiplex flowcytomix kit. Our findings suggest that RAE induces TLR-4 expression and intracellular granzyme-B in treated splenocytes while RAE stimulated IL-1beta, IL-6, and TNF-alpha in human PBMCs. The present study suggests that RAE stimulates the innate immune pathway and has potent immunostimulatory activity, which can be used in modulating the immune system of immunocompromised individuals. FAU - Mishra, Kamla P AU - Mishra KP AD - Immunomodulation Laboratory, Defence Institute of Physiology and Allied Sciences, Lucknow Road, Timarpur, Delhi 110054, India. FAU - Ganju, Lilly AU - Ganju L FAU - Chanda, Sudipta AU - Chanda S FAU - Karan, Dev AU - Karan D FAU - Sawhney, Ramesh C AU - Sawhney RC LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080617 PL - Netherlands TA - Immunobiology JT - Immunobiology JID - 8002742 RN - 0 (Cytokines) RN - 0 (Immunologic Factors) RN - 0 (Inflammation Mediators) RN - 0 (Plant Extracts) RN - 0 (Toll-Like Receptor 4) RN - EC 3.4.21.- (Granzymes) SB - IM MH - Animals MH - Cell Separation MH - Cytokines/genetics/*metabolism MH - Flow Cytometry MH - Granzymes/genetics/immunology/*metabolism MH - Humans MH - Immunologic Factors/immunology MH - Inflammation Mediators/metabolism MH - Lymphocyte Activation/drug effects MH - Mice MH - Plant Extracts/*pharmacology MH - Rhizome/immunology/metabolism MH - *Rhodiola MH - Spleen/cytology/immunology/metabolism MH - Th1 Cells/cytology/immunology/*metabolism MH - Th2 Cells/cytology/immunology/metabolism MH - Toll-Like Receptor 4/genetics/immunology/*metabolism EDAT- 2009/01/23 09:00 MHDA- 2009/10/08 06:00 CRDT- 2009/01/23 09:00 PHST- 2008/01/22 00:00 [received] PHST- 2008/04/22 00:00 [revised] PHST- 2008/04/23 00:00 [accepted] PHST- 2009/01/23 09:00 [entrez] PHST- 2009/01/23 09:00 [pubmed] PHST- 2009/10/08 06:00 [medline] AID - S0171-2985(08)00051-X [pii] AID - 10.1016/j.imbio.2008.04.001 [doi] PST - ppublish SO - Immunobiology. 2009;214(1):27-31. doi: 10.1016/j.imbio.2008.04.001. Epub 2008 Jun 17.