• Korean Journal of Medicinal Crop Science
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• v.22 no.4
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• pp.276-288
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• 2014

The six polysaccharide fractions were prepared by chromatographic procedure from the hot water extracts of the aboveground parts of Astragalus membranaceus. These six polysaccharides from aboveground parts of Astragalus membranaceus Bunge were tested for gut-mucosal immune activity and acute toxicity. In a view of molecular weight, the six fractions were estimated to be 75000, 88000, 129000 and 345000 Da, respectively. Component sugar analysis indicated that these fractions were mainly consisted of galactose (46.3 ~ 11.8%) and arabinose (35.4 ~ 9.9%) in addition to glucose, rhamnose, fucose, arabinose, xylose, mannose, glucuronic acid and galacturonic acid. Among the six major purified polysaccharides, AMA-1-b-PS2 showed highest bone merrow cell proliferation and lymphocyte of Peyer's patch stimulating activity. It may be concluded that intestinal immune system modulating activity of aboveground parts from Astragalus membranaceus Bunge is caused by polysaccharides having a polygalacturonan moiety with neutral sugars such as arabinose and galactose. In single oral dose toxicity study, no differences were observed between control and treated groups in clinical signs. The results indicated that lethal dose 50 ($LD_{50}$) of water extracts from Astragalus membranaceus-aboveground parts was found to be higher than 5000 mg/kg/day in this experiment. From the above results, we may suggest that Astragalus membranaceus-aboveground parts might have useful as a safe material for functional food and pharmaceutics.

• Journal of Preventive Veterinary Medicine
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• v.42 no.4
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• pp.177-181
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• 2018

Disulfiram is a drug used to treat alcohol dependence. Recent studies have shown that disulfiram also has anti-cancer effects. Considering that many anti-cancer agents have side effects, including immunosuppression, it is important to check if disulfiram has some cytotoxicity to immune cells. In this study, mouse spleen cells were treated with disulfiram and the metabolic activity was measured. Disulfiram increased the cell death of spleen cells according to annexin V-FITC/PI staining analysis. In addition, disulfiram decreased the mitochondrial membrane potential of spleen cells. The toxicity of disulfiram was concentration dependent. Interestingly, disulfiram affected the population of lymphocytes and the subset of spleen cells was altered. This study provides clinicians and researchers with valuable information regarding the toxicity of disulfiram to mouse spleen cells, particularly lymphocytes.

• Toxicological Research
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• v.15 no.1
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• pp.47-53
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• 1999

The effects of methidathion on humoral immune response were studied in BALB/c mice. 0.5 or 5.0 mg/kg/day methidathion were administered orally for 14 days. The parameters examined to assess apparent toxicity of methidathion included changes of body weight, relative weight of spleen, thymus, sidney and liver, and viable spllenic cell numbers. To evaluate the humoral immune response, thymus, kidney and liver, and viable splenic cell numbers. To evaluate the humoral immune resopnse, the plaque forming cell(PFC) responses sheep the red blood cells (SRBC) and the lovels of serum IgG to hen egg lysozyme (HEL) were determined. No alterations were observed in changes of body weights, relative organ weights and the numbers of viable splenocytes by exposure to any dose of methidathion. At the dose of 0.5mg/kg only PFC response was decreased, whereas both PFC response and the level of serum IgG were decreased significantly at the dose of 5.0 mg/kg. These results indicate that exposure to methidathion may cause sup[pression of humoral immune reponse in mice without overt changed in lymphoid organ weight or viability of splenocytes.

• Toxicological Research
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• v.34 no.3
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• pp.259-266
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• 2018

Glycomacropeptide (GMP), a whey protein of milk, has functions including differentiation and development of nervous system, and anticancer and antiviral effects. To develop new functions, N-acetylneuraminic acid (NANA) containing 7% sialic acid was separated from GMP to produce G-7%NANA. N-glycolylneuraminic acid (Neu5Gc) is another type of sialic acid separated from GMP, which has been linked to immune disorders and chronic inflammation-mediated diseases. Therefore, safety was a concern in the use of G-7%NANA in functional foods. To ensure safety, in this study, three genetic toxicity tests on G-7%NANA were conducted. In the reverse mutation test using Salmonella typhimurium TA98, TA100, TA1535, TA1537, and Escherichia coli WP2uvrA, and in the chromosome aberration test using CHO-K1 cells, no significant differences from negative control were found at all dose levels. Similarly, no dose-related differences were evident compared to negative control in the micronucleus test using ICR mice. There was no evidence of G-7%NANA-related genetic toxicity.

• The Journal of Internal Korean Medicine
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• v.31 no.4
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• pp.846-856
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• 2010

Objective : Allergic disease, a very common chronic illness that affects all ages of patients, has been well characterized as an IgE-dependent immunologic response. Recently, interest has grown about the late inflammatory reaction as well as the early one characterized by IgE and mast cells in allergic disease. The purpose of this study was to find the anti-inflammatory effect of Taeeumjowui-tang (Taiyintiaowei-tang) in allergic reaction. Methods : The experiment was performed using Raw 264.7 cells pretreated with Taeeumjowui-tang contents extracts. The results were measured for different concentrations of Taeeumjowui-tang extracts (100, 200, $300{\mu}g$/ml): the toxicity and proliferation of cells by MTT analysis, LPS-induced NO production using Griess reagent and IL-6/ TNF-${\alpha}$ production, which is a significant criteria for diagnosing allergic reaction. Results : No toxicity of Taeeumjowui-tang (100, 200, $300{\mu}g$/ml) on Raw 264.7 cells was found after 24 hours incubation. LPS-induced NO production was reduced after treatment with Taeeumjowui-tang (100, 200, $300{\mu}g$/ml)(P<0.001). IL-6 decreased only at $100{\mu}g$/ml(P<0.05). TNF-${\alpha}$ production decreased only at $300{\mu}g$/ml, but still statistically insignificant. There was no relationship between any components of Taeeumjowui-tang alone and inhibition of NO production. Conclusions : These data suggest that Taeeumjowui-tang has anti-inflammatory effects in allergic reaction.

• The Journal of Internal Korean Medicine
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• v.31 no.2
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• pp.242-253
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• 2010

Objectives : The purpose of this study was to examine the anti-inflammatory effects Forsythiae Fructus on LPS-activated RAW264.7 cells. Methods : Statistical significance was examined through measuring MTT, nitric oxide (NO), TNF $\alpha$, IL 6, NOS2 and COX2 of LPS-activated RAW264.7 cells. Results : In the toxicity experiment of FFE, NO significant toxicity was shown on cells in the concentration ranges of 100, 200 and 300 ${\mu}g/ml$. FFE dose dependently decreases 5.49, 25.41, 33.64 % in LPS induced NO production (p<0.05, p<0.001 and p<0.001), however, FFE don't show significant difference in LPS-induced TNF $\alpha$ and IL 6. Furthermore, FFE showed inhibiting tendency against the revelation of NOS2 and COX2 in LPS-activated RAW264.7 cells, dose-dependently according to concentration. Conclusions : These results mean that FFE is effective for anti-inflammation via inhibition of NOS2 and COX2 expression.

• Korean Journal of Pharmacognosy
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• v.28 no.4
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• pp.286-292
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• 1997

We studied the screening condition for immune regulatory responsor. We focused on the T-lymphocytes leer this purpose. Mouse fetal thymic organ culture (FTOC) system and flow cytometric analysis were mainly used in this experiment. Even if FTOC is carried out in vivo condition, the pattern of thymic development in the condition of FTOC is similar to that of in vivo condition. In this regard, FTOC system might be very powerful tool to screen the immune regulator, especially concerning on T cells. To establish the optimum condition of FTOC to screen the Immune regulator, we focused on the optimum amount of dose and culture period. The cell number and surface antigens on T cells were also analysed by using hemacytometer and flow cytometer. To monitor the differentiation event, anti-CD3, anti-CD4 and anti-CD8 antibodies were used. Alkoxyglycerol and Phellodendri Cortex were used fur positive and negative control, respectively. Astragalus membranceus was used as test sample. From our analysis, we reached to conclusions that the best dose of extract is $50\;{\mu}g/ml$ of culture medium, the best culture period is for 9 days, and ethanol used as solvent has no toxicity to FTOC.

• Herbal Formula Science
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• v.19 no.2
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• pp.93-108
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• 2011

Objectives : Angelica sinensis has been used extensively in Korean traditional medicine. Although thorough clinical trials are lacking, Various pharmacological actions for Angelica sinensis has been identified newly using animal models. In addition, it was reported that reactive intermediates, potentially causing toxic effects, was isolated from components in Angelica sinensis. In this article, it was purposed for explanation and introduction of new studies for Angelica sinensis. in terms of Pharmacological action and Toxicity. Methods : New studies for Angelica sinensis were reviewed and summarized in terms of pharmacological action and toxicity. Results and Conclusions : Angelica sinensis and its components including phthalide, phthalide dimers, polysaccharides, polyacetylenes, ligustilide와 butylidenephthalide as well as organic acid showed a variety of pharmacological actions on uterine, cardiovascular system and immune system. In addition, it was identified that three components of such as ligustilide, caffeic acid and safrole was biotransformed to reactive intermediates causing possibly toxicity.

• Preventive Nutrition and Food Science
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• v.18 no.2
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• pp.111-116
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• 2013

Chrysanthemum indicum is widely used to treat immune-related and infectious disorders in East Asia. C. indicum flower oil contains 1,8-cineole, germacrene D, camphor, ${\alpha}$-cadinol, camphene, pinocarvone, ${\beta}$-caryophyllene, 3-cyclohexen- 1-ol, and ${\gamma}$-curcumene. We evaluated the safety of C. indicum flower oil by conducting acute oral toxicity, bone marrow micronucleus, and bacterial reverse mutation tests. Mortality, clinical signs and gross findings of mice were measured for 15 days after the oral single gavage administration of C. indicum flower oil. There were no mortality and clinical signs of toxicity at 2,000 mg/kg body weight/day of C. indicum flower oil throughout the 15 day period. Micronucleated erythrocyte cell counts for all treated groups were not significantly different between test and control groups. Levels of 15.63~500 ${\mu}g$ C. indicum flower oil/plate did not induce mutagenicity in S. Typhimurium and E. coli, with or without the introduction of a metabolic activation system. These results indicate that ingesting C. indicum flower oil produces no acute oral toxicity, bone marrow micronucleus, and bacterial reverse mutation.

• Journal of Society of Preventive Korean Medicine
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• v.16 no.3
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• pp.139-153
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• 2012

Objectives : NK cells are spontaneously cytotoxic lymphocytes. These are not only important parts in the first line of defence against bacterial and viral infections of outside, but they may also play a critical role in chronic viral diseases. NK cells kill their targets spontaneously, without the need for prior sensitization and class I MHC restriction by the regulation of cytolytic functions and secretion of a variety of cytokines, such as interleukin-12(IL-12), MCP-1, IL-6, TNF-${\alpha}$, IFN-${\gamma}$. In addition, macrophage and NK cells cooperate through the production of cell mediates. These cooperation and modulation are one of major factors to prevent for evading immune surveillance of cancer. Hence, it could be assumed that if any candidate to enhance activities of macrophage and NK cell, it is considered as a potentially useful agents against cancer. Methods : In our study, to investigate effect of fermented soybean extracts by Lactic acid bacteria (SFE, soybean fermented extracts) work on intestinal immune cell to maintain general immune modulating and anti-cancer activity. We analyzed NK cytotoxicity assay and gene expressions of cytokine related with macrophage and NK cell activity. Results : In vitro experiment, SFE was verified as safety material for cell toxicicty to tumor cell strain without any toxicity of tumor growth inhibition and various cell strain. Effects of macrophage activity stimulating directly by SFE measured induced cytokine. The studies showed that IL-12 production by stimulation of SFE depended on concentration from 0.16mg/mL to 0.63mg/mL with non toxicity to cell, and it was the best activity at 0.63mg/mL. Besides, the effective concentration of SFE producing TNF-${\alpha}$ is similar to IL-12, but it was the best activity at 1.25mg/mL. The level of MCP-1, IL-6 and IFN-${\gamma}$ depended on concentration from 0.16mg/mL to 10mg/mL, IFN-${\gamma}$ showed the best activity at the effective concentration of 0.63mg/mL. With the result of NK cell activity measurement, the spleen cell of mouse injected SFE had 1.5 times higher killing effect than non injected cell. Conclusions : The result of this studies is that Soybean fermetated extracts(SFE) has possibility to immune aided material for the function not only inhibition of microbial infection to macrophage but also activity of adaption immune and cellular immune system.