The immunomodulatory effect of two preparations from Panax ginseng radix, namely Ginsengcha (granulated mass of radix ginseng) and Ginsengpian (ginseng radix flakes) on mice has been investigated. The examined immune parameters were the following: the production of anti-SRBC antibodies, the chemokinesis of mouse spleen cells and the graft-versus-host reaction induced by mouse spleen cells. Additionally, the influence of ginseng preparations on the angiogenic activity of syngeneic LI sarcoma cells, LI sarcoma tumour growth and tumour blood supply (haemoglobin content) was examined. The production of antibodies was enhanced, particularly in the group with lower control parameters (pcO.OOl). Chemokinesis proved to be augmented (p<0.001) after 10 days of administering ginseng preparations to mice. The ability of mouse spleen cells to produce immunological mediators in the GvH reaction (immunological angiogenesis) turned out to increase significantly (p<0.001) under the influence of Ginsengcha. Neither Ginsengpian nor Ginsengcha stimulated the angiogenic activity of the LI sarcoma cells. Ginsengpian sligtly decreased this activity (p<0.02). The LI sarcoma tumour volume was significantly reduced by Ginsengcha (p<0.05), but no influence on tumour blood supply was observed. Panax ginseng preparations possess immunomodulatory properties and show potent antitumour activity.
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