Korean Ginseng Berry Polysaccharide Enhances Immunomodulation Activities of Peritoneal Macrophages in Mice with Cyclophosphamide-Induced Immunosuppression
2023
Choi, J.U. | Nam, J.H. | Rod-in, W. | Monmai, C. | Jang, A.Y. | You, S.G. | Park, W.J.
Korean ginseng (Panax ginseng C. A. Meyer), a member of the Araliaceae family, is known as a traditional medicinal plant to have a wide range of health properties. Polysaccharides constitute a major component of Korean ginseng, and its berries exhibit immune-modulating properties. The purpose of this study was to investigate the immune effects of crude polysaccharide (GBPC) extracted from Korean ginseng berry on peritoneal macrophages in mice with cyclophosphamide (CY)- induced immunosuppression. BALB/c mice were divided into eight groups: normal control, normal control + CY, levamisole + CY, ginseng + CY, and four concentrations of 50, 100, 250, and 500 mg/kg BW/day of GBPC + CY. Mice were orally administered with samples for 10 days. Immunosuppression was established by treating mice with CY (80 mg/kg BW/day) through intraperitoneal injection on days 4 to 6. The immune function of peritoneal macrophages was then evaluated. Oral administration of 500 mg/kg BW/day GBPC resulted in proliferation, NO production, and phagocytosis at 100%, 88%, and 91%, respectively, close to the levels of the normal group (100%) of peritoneal macrophages. In CY-treated mice, GBPC of 50−500 mg/kg BW/day also dosedependently stimulated the proliferation, NO production, and phagocytosis at 56−100%, 47−88%, and 53−91%, respectively, with expression levels of immune-associated genes, such as iNOS, COX−2, IL−1β, IL−6, and TNF–α, of about 0.32 to 2.87-fold, compared to those in the CY group. GBPC could be a potential immunomodulatory material to control peritoneal macrophages under an immunosuppressive condition.
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