title: Effect of 1-palmitoyl-2-linoleoyl-3-acetyl-rac-glycerol on Immune Functions in Healthy Adults in a Randomized Controlled Trial.
abstract: We previously reported that 1-palmitoyl-2-linoleoyl-3-acetyl-rac-glycerol (PLAG) accelerates hematopoiesis and has an improving effect on animal disease models such as sepsis and asthma. The effects of PLAG supplementation on immune modulation were assessed in healthy men and women. The objective was to evaluate the effects of PLAG supplementation on immune regulatory functions such as activities of immune cells and cytokine production. A randomized double blind placebo-controlled trial was conducted. Seventy-five participants were assigned to one of two groups; all participants had an appropriate number of white blood cells on the testing day. The PLAG group (n=27) received oral PLAG supplements and the control group (n=22) received oral soybean oil supplements. IL-4 and IL-6 production by peripheral blood mononuclear cells (PBMC) were lower (p<0.001 and p<0.001, respectively) with PLAG than with soybean oil. However, the production of IL-2 and IFN-γ by PBMC was unaltered with PLAG supplementation. The B cell proliferation decreased significantly in the PLAG group compared to the soybean oil control (p<0.05). The intake of PLAG in healthy adults for 4 weeks was deemed safe. These data suggest that PLAG has an immunomodulatory function that inhibits the excessive immune activity of immunological disorders such as atopic and autoimmune diseases. PLAG could improve the condition of these diseases safely as a health food supplement.
authors.affiliation: Department of Family Medicine, International St. Mary's Hospital, Catholic Kwandong University College of Medicine, Incheon 404-834, Korea.
authors.forename: Hee-Jin
authors.initials: HJ
authors.lastname: Hwang
authors.affiliation: ENZYCHEM Lifesciences, Daejeon 305-732, Korea.
authors.forename: Ki-Young
authors.initials: KY
authors.lastname: Sohn
authors.affiliation: ENZYCHEM Lifesciences, Daejeon 305-732, Korea.
authors.forename: Yong-Hae
authors.initials: YH
authors.lastname: Han
authors.affiliation: ENZYCHEM Lifesciences, Daejeon 305-732, Korea.
authors.forename: Saeho
authors.initials: S
authors.lastname: Chong
authors.affiliation: ENZYCHEM Lifesciences, Daejeon 305-732, Korea.
authors.forename: Sun Young
authors.initials: SY
authors.lastname: Yoon
authors.affiliation: Biomedical Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Korea.
authors.forename: Young-Jun
authors.initials: YJ
authors.lastname: Kim
authors.affiliation: Biomedical Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Korea.
authors.forename: Jinseoun
authors.initials: J
authors.lastname: Jeong
authors.affiliation: Institute for Geriatric Medicine, Yonsei Woori Geriatric Hospital, Goyang 412-802, Korea.
authors.forename: Sang-Hwan
authors.initials: SH
authors.lastname: Kim
authors.affiliation: Biomedical Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Korea.
authors.forename: Jae Wha
authors.initials: JW
authors.lastname: Kim
keywords: Human; Immunomodulation; Lipid supplement; Nutrition; PLAG (1-palmitoyl-2-linoleoyl-3-acetyl-rac-glycerol)