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The effects of Morinda citrifolia L. (noni) on the immune system: its molecular mechanisms of action
Authors:Palu Afa K  Kim Anne Hirazumi  West Brett J  Deng Shixin  Jensen Jarakae  White Leland
Institution:Noni Benefits Research Department, Tahitian Noni International Research Center, 737 East 1180 South, American Fork, UT 84003, USA. afap@tni.com
Abstract:The aim of this study was to investigate the mechanisms involved in the immunomodulatory effects of Morinda citrifolia L. (noni) in vitro and in vivo in mice. In vitro, Tahitian Noni Juice (TNJ) and Noni fruit juice concentrates (NFJC) (1, 5mg/mL) potently activate cannabinoid 2 (CB2), but inhibit cannabinoid 1 (CB1) receptors in a concentration-dependant manner. In vivo, oral administration of TNJ ad libitum for 16 days decreased the production of IL-4, but increased the production of IFN-gamma. These results suggest that noni modulates the immune system via activating of the CB2 receptors, and suppressing of the IL-4, but increasing the production of IFN-gamma cytokines. It may also exert beneficial immunomodulation effects in conditions involving inadequate immune responses.
Keywords:TNJ  Tahtian Noni® Juice  a commercial noni fruit juice brand  CB2/CB1  cannabinoid receptors 1 &  2  IFN-γ  interferon gamma  IL-4  interlukin 4  NFJC  noni fruit juice concentrates  CHO  Chinese Hamster Ovary  PEC  peritoneal exudates cells  RPMI  a type of media for culturing human cells first developed in Roswell Park Memorial Institute which utilizes a bicarbonate buffering systems  LPS  lipopolysaccharide  Con A  concanavalin A  FCS  fetal calf serum  DMSO  dimethyl sulfoxide
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