• Title/Summary/Keyword: splenocyte survival

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DEU-7 Derived from Ulmus macrocarpa Improved Immune Functions in Cyclophosphamide-treated Mice (면역억제 마우스 모델에서 왕느릅나무 유래 DEU-7의 면역기능 증강)

  • Kang, Kyung-Hwa;Go, Ji Su;Lee, Inhwan;Lee, Sang Ho;Lee, Sung Do;Kim, Deok Won;Lee, Jong-Hwan;Hwang, HyeJin;Hyun, Sook Kyung;KIM, Byoung Woo;Kim, Chul Min;Chung, Kyung Tae
    • Journal of Life Science
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    • v.25 no.10
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    • pp.1156-1163
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    • 2015
  • The present study investigated the immunomodulatory properties of four different medicinal plants in a cyclophosphamide-treated Balb/c mouse model. One of the four plants, Ulmus macrocarpa, showed partial resistance against immune suppression induced by cyclophosphamide. The bark of U. macrocarpa, commonly known as the Chinese elm, has been used as a pharmaceutical material in Korean traditional medicine to treat bacterial inflammation and induce wound healing. In this study, water extract of U. macrocarpa, named DEU-7, was used for its immunomodulating functional activity. DEU-7 increased the weight of the spleen and the number of splenocytes but did not significantly affect the liver, kidney, and thymus in vivo. A splenocyte viability assay confirmed that DEU-7 influenced ex vivo splenocyte survival. DEU-7 also increased the levels of cytokines, such as IL-2 and IL-4, and immunoglobulins, such as IgM, IgG, and IgA. These results indicated that DEU-7 is involved in the activation of T and B lymphocytes. In addition, DEU-7 was able to maintain the production of cytokines, such as TNF-α, IL-12, and IFN-γ, in the condition of cyclophosphamide-induced immune suppression, suggesting that DEU-7 activated innate immune cells, even under immune suppression. We concluded that DEU-7 aids immunological homeostasis, thereby preventing immune suppression, and aids both innate and adaptive immune response by maintaining the levels of various cytokines and immunoglobulins. Consequently, it is worth investigating the potential of DEU-7 as a supplemental source for immune-enhancing agents.

Effect of Mercury Chloride on Humoral and Cell-mediated Immune Responses in Mice (수은이 마우스의 체액성 및 세포성 면역반응에 미치는 영향)

  • Youm, Jung-Ho
    • Journal of Preventive Medicine and Public Health
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    • v.28 no.1 s.49
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    • pp.27-42
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    • 1995
  • The in vivo and in vitro humoral and cell-mediated immune responses of lymphocytes of BALB/c mouse exposed to mercury chloride$(HgCl_2)$ were investigated. In vitro exposure of the splenocytes to mercury chloride produced overt cytotoxicity in 3 hours period. The $IC_{50}$(the concentration required to inhibit a splenocyte viability by 50%) for mercury chloride was >0.1mM for cytotoxicity. In vivo mercury chloride exposed mice were significantly depressed delayed type hypersensitivity(DTH) response to sheep red blood cells(SRBC) in a dose-dependent manner compared with control group. Mercury chloride inhibited the proliferative responses of splenocytes to lipopolysaccharide, pokeweed mitogen, concanavalin A and phytohemagglutinin in a dose-dependent manner. Hemagglutinin response to SRBC in mercury chloride exposed mice was significantly depressed in a dose-dependent manner compared with control group. After 7 weeks of mercury chloride exposure in vivo, mercury chloride induced an increase of nonspecific serum $IgG_1$ and IgE levels in BALB/c mice.

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