• Journal of Korean Society of Forest Science
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• v.98 no.4
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• pp.399-408
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• 2009

We investigated the improvement of immuno-modulatory activities of sap of Acer mono and A. okamotoanum encapsulated with edible polymers. Anticancer activities and immune activities such as human B and T cell growth, secretion of cytokines and natural killer cell growth were observed. Both human immune B and T cells were increased up to 30~50% by the addition of nano particle sap of Acer mono and A. okamotoanum. The secretion of Interleukin-6 (IL-6) and Tumor necrosis factor-a (TNF-a) from human immune B and T cells were also significantly increased compare to the control. Natural Killer (NK) cell growth was enhanced to $19.4{\times}10^5$ cells/mL in adding nano encapsulated sap of A.okamotoanum. The cytotoxicity of the sample on normal human lung cell (HEL299) was below 19.8% in adding 1.0 mg/mL of the nano particle sap of A. okamotoanum. Generally, the growth of all three human lung adenocarcinoma, human stomach adenocarcinoma and human liver adenocarcinama was inhibited up to 85% in adding 1.0 mg/mL of the encapsulated sap. Interestingly enough, the encapsulated sap was completely penetrated into human cancer cells within 30 min after addition. It showed that the encapsulation of the sap definitely increased its biological activities, which can expand its use to wide range of food industries.

• Journal of Korean Society of Forest Science
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• v.103 no.1
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• pp.129-136
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• 2014

This study aims to investigate the effect of frequency of using forest environment on workers' stress. Workers in medical and counseling industry, which is recently known to require heavy emotional burden and thus cause a lot of stress and burnout syndrome, participated in the study. We classified 370 subjects, who were working at medical and counseling service institutions in Seoul metropolitan area, into two groups according to frequency of using forest environment by conducting a screening survey. 69 subjects submitted written consent and were recruited for either forest therapy program or control-group test; the "high" group (n=27) at the high frequency of using forest environment and the "low" group (n=42) at the low level. We measured the level of stress by using psychosocial indicators such as Worker's Stress Response Inventory (WSRI), Recovery Experience Questionnaire (REQ), and Maslach Burnout Inventory-General Survey (MBI-GS) and biological ones such as heart rate variability (HRV), cortisol, and Natural Killer cell (NK cell). The results suggested that the level of stress differed by frequency. The "high" group showed significantly low scores in the depression and work sub-scale and the total score of WSRI, emotional exhaustion, professional efficacy and total score of MBI-GS, and high scores in the total score of REQ. Similar tendencies were observed in the most of other indicators of psychosocial measures. Regarding the biological indicators, the "high" group showed the highest SDNN, RMSSD and TP measures of HRV and NK Cell activity and the low cortisol, although the statistical power did not reach the significant level. Our results suggest that the subjects who use forest environment frequently show favorable stress level both psychologically and biologically.

• The Journal of Korean Obstetrics and Gynecology
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• v.32 no.4
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• pp.1-13
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• 2019

Objective: This study is aimed to investigate the anti-tumor metastasis by innate immunomodulating effects of crude polysaccharide isolated from Polygonati Rhizoma (CP-PR) on 4T1 breast cancer cells. Methods: CP-PR was isolated from Polygonati Rhizoma. Antimetastatic experiments were conducted in vivo mouse model by using 4T1 breast cancer cells. The cell viability of CP-PR was tested with normal spleen and 4T1 breast cancer cells. To observe the activation of macrophages with/without 4T1 breast cancer cells, production of tumor necrosis factor-${\alpha}$ ($TNF-{\alpha}$), interleukin-6 (IL-6), IL-10 and IL-12 were measured with enzyme-linked immunosorbent assay (ELISA), respectively. In addition, the lysis of YAC-1 cells and the production of granzymes were measured to observe the activation of natural killer (NK) cell. Results: Intravenous administration of CP-PR significantly inhibited metastasis of 4T1 breast cancer cells. In an in vitro cytotoxicity analysis, CP-PR affected the growth of normal spleen and 4T1 breast cancer cells above specific concentration. The production of $TNF-{\alpha}$, IL-6, IL-10 and IL-12 were significantly increased in macrophages with CP-PR. As compared with control, CP-PR showed significantly higher production of $TNF-{\alpha}$, IL-10 and IL-12 in macrophages co-cultured with 4T1 breast cancer cells. The lysis of YAC-1 cells and the production of granzymes were significantly up regulated by CP-PR. Conclusion: CP-PR appears to have considerable activity on the anti-metastasis by activation of innate immune system.

• Journal of the Korean Society for Nondestructive Testing
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• v.34 no.2
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• pp.176-183
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• 2014

Acoustic emission testing (AET) of cylinders is advantageous in that it can be directly conducted on cylinders installed in a car, without needing to dissemble them on a real-time basis. Therefore, users prefer AET over other nondestructive testing methods. Owing to these advantages of AET, it has been approved by the Department of Transportation of the U.S. as a safety evaluation method for pressure containers or as an alternative to the hydroproof testing method. This paper presents a study of the quantitative evaluation criteria for a container having ultrasonic testing defects and also for Type 1 and Type 2 gas cylinders, which are defective seamless pressure containers provided by NK, a manufacturer of pressure containers. For the Type 1 cylinder, the process from crack growth to leak was observed in a repetitive fatigue test using a 113 L container according to ASTM E 1419-02. Further, for the Type 2 cylinder, integrity was evaluated using a 119 L sound container and a container damaged by hydraulic pressure, by the slow-fill method according to ASTM E 2191-02. Based on the AET results of the Type 1 and Type 2 cylinders, quantitative evaluation criteria were established for a defective and non-defective container.

• THE JOURNAL OF KOREAN ORIENTAL ONCOLOGY
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• v.3 no.1
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• pp.1-27
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• 1997

This study was performed to investigate the effects of Eunwhasagantang and Eunwhasagantangganokyong on the viability of tumor cells in vitro(MTT assay), on antitumor effects after Sarcoma-180 cells transplantation into the peritoneal cavity or left groin, and on decreased immune responses in mice induced by methotrexate. The extracts of its herbal medicines were orally administered for 14 or 21 days. To evaluate the effects of the Eunwhasagantang and Eunwhasagantangganokyong many items such as 50% inhibitory concentration($IC_{50}$), mean survival days, tumor and body weight for antitumor effects, and delayed type hypersensitivity, hemagglutinin titer, hemolysin titer, rosette forming cells, natural killer cell activity, lymphocyte transformation, productivity of interleukin-2 and phagocytic activity for immune responses were measured in ICR mice. The results were obtained as follows; 1. $IC_{50}$ of Eunwhasagantang treated group was 0.000204mg/ml on SNU-396 and that of Eunwhasagantangganokyong treated group was 0.000103mg／ml on SNU-1, those results indicate that the medicine has high antitumor activity. 2. Mean survival times in Eunwhasagantang and Eunwhasagantangganokyong treated groups were slightly increased with no significance, as compared with the control group. 3. Tumor weight in Eunwhasagantang and Eunwhasagantangganokyong treated group was depressed, as compared with the control group(p<0.01). 4. Body weight in Eunwhasagantang and Eunwhasagantangganokyong treated group was significantly increased, as compared with the control group(p<0.05). 5. Delayed type hypersensitivity in Eunwhasagantang and Eunwhasagantang-ganokyong treated group was slightly decreased with no significance, as compared with the control group. 6. Hemagglutinin titer in Eunwhasagantang and Eunwhasagantangganokyong treated group was slightly increased with no significance, as compared with the control group. 7. Hemolysin titer only in Eunwhasagantang treated group was significantly increased, as compared with the control group(p<0.01). 8. Rosette forming cells only in Eunwhasagantangganokyong treated group was slightly increased with no significance, as compared with the control group. 9. In the NK cell activity, the ratio of effector cells and target cells of the Eunwhasagantang treated group was significantly increased(p<0.01) in case which the ratio was 100: 1, and that of the Eunwhasagantangganokyong treated group was significantly increased(P<.01, p<0.05) in case which the ratio was 100:1, 50:1, as compared with the control group. 10. Lymphocyte trasnformation in Eunwhasagantang and Eunwhasagantangganokyong treated group was significantly increased, as compared with the control group(p<0.01). 11. Interleukin-2 in Eunwhasagantang and Eunwhasagantangganokyong treated group was significantly increased, as compared with the control group(p<0.05, p<0.01). 12. Phagocytic activity in Eunwhasagantang and Eunwhasagantangganokyong treated group was significantly increased, as compared with the control group(p<0.05). According to the above results, it could be suggested that Eunwhasagantang and Eunwhasagantangganokyong have prominent antitumor effects, and enhance both cellular and humoral immunity.

• IMMUNE NETWORK
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• v.5 no.3
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• pp.163-171
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• 2005

Background: To perform the successful dendritic cell-based cancer immunotherapy one of the main issues to be solved is the source of antigen for DC pulsing. Limitations occur by using auto-tumor lysate due to the difficulties obtaining enough tumor tissue(s) quantitatively as well as qualitatively. In this study the possibility of allogeneic tumor cell lysate as a DC pulsing antigen has been tested in mouse melanoma pulmonary me tastasis model. Methods: B16F10 melanoma cells $(1{\timeS}10^5/mouse)$ were inoculated intra venously into the C57BL/6 mouse. Therapeutic DCs were cultured from the bone marrow myeloid lineage cells with GM-CSF and IL-4 (1,000 U/ml each) for 7 days and pulsed with lysate of either autologous B16F10 (B-DC), allogeneic K1735 (C3H/He origin; K-DC) or CloneM3 (DBA2 origin; C-DC) melanoma cells for 18 hrs. Pulsed-DCs $(1{\times}10^6/mouse)_{[CGP1]}$ were injected i.p. twice with one week interval starting from the day 1 after tumor cell inoculation. Results: Without observable toxicity, allogeneic tumor cell lysate pulsed-DC induced the significantly better anti-tumor response (tumor scale: $2.7{\pm}0.3,\;0.7{\pm}0.3\;and\;0.3{\pm}0.2$ for saline, B-DC and C-DC treated group, respectively). Along with increased tumor specific lymphocyte proliferations, induction of IFN-${\gamma}$ secretion against both auto- and allo-tumor cell lysates was observed from the DC treated mice. (w/B16F10-lysate: $44.97{\pm}10.31,\;1787.94{\pm}131.18,\;1257.15{\pm}48.27$, w/CloneM3 lysate: 0, $1591.13{\pm}1.83,\;1460.47{\pm}86.05pg/ml$ for saline, B-DC and C-DC treated group, respectively) Natural killer cell activity was also increased in the mice treated with tumor cell lysate pulsed-DC ($8.9{\pm}_{[CGP2]}0.1,\;11.6{\pm}0.8\;and\;12.6{\pm}0.7%$ specific NK activity for saline, B-DC and C-DC treated group, respectively). Conclusion: Conclusively, promising data were obtained that allogeneic-tumor cell lysate can be used as a tumor antigen for DC-based cancer immunotherapy.

• Parasites, Hosts and Diseases
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• v.48 no.4
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• pp.325-329
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• 2010

Toxoplasma gondii KI-1, a recent new isolate from Korea, shows similar pathogenicity and infectivity to mice compared to the virulent RH strain. To understand characteristics of host immunity, including immune enhancement or suppression, we investigated proliferative responses and phenotypes of spleen cells. In addition, kinetics of IFN-${\gamma}$, a Th1 cytokine, was examined in BALB/c mice up to day 6 post-infection (PI). Intraperitoneal injection of mice with $10^3$ KI-1 tachyzoites induced significant decreases (P < 0.05) in proliferative responses of spleen cells. This occurred at days 2-6 PI even when concanavalin A (con A) was added and when stimulated with KI-1 antigen, suggesting suppression of the immunity. $CD4^+$ T-cells decreased markedly at day 2 PI (P < 0.05), whereas $CD8^+$ T-cells, NK cells, and macrophages did not show significant changes, except a slight, but significant, increase of $CD8^+$ T-cells at day 6 PI. The capacity of splenocytes to produce IFN-${\gamma}$ by con A stimulation dropped significantly at days 2-6 PI. These results demonstrate that intraperitoneal injection of KI-1 tachyzoites can induce immunosuppression during the early stage of infection, as revealed by the decrease of $CD4^+$ T-cells and IFN-${\gamma}$.

• Journal of Korea Association of Health Promotion
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• v.4 no.1
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• pp.75-84
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• 2006

Background : Osteoporosis and atrophic cell pattern in Pap smear are frequent findings In postmenopausal women due to loss of ovarian function, The present study attempted to find out possible correlation between morphologic characteristics of Pap smear and osteoporosis. Material & methods: The subjects were 825 women(age from 35 to 80) who had undergone Pap smear and bone mineral density(BMD) at The Korea Association of Health Promotion, Seoul Branch, from March 8 to May 10, 2005. Pap smears from 825 women were reviewed and classified either mature cell pattern or atrophic cell pattern by their cytologic patterns, BMD were measured using LUNAR DPX MdIQ(Minster, Ohio, USA). BMD value of lumbar spine(Ll, L2,L3 and L4) were measured from 825 women and BMD value of proximal region off emur(neck NK, Wards triangle WT, and trochanter TR) were measured from 818 women and their bone status were classified as normal( T-sore:>-1.0), osteopenia (T-score: -l~<-2,5) and osteoporosis(T-score: ≤ -2.5). And age distribution of Pap smear, average T-value andfrequency ofsteoporo-sis of each region of the bone, percentage of osteoporosis of each boneregion by age group and changing pattern of percentage of osteopenia and osteoporosis in certain postmenopausal period were compared between mature and atrophic cell pattern. Results: Pap smears revealed total mature cell pattern 53,9%(445/825) and total atrophic cell pattern 46.1%(380/825), Percentage of mature cell pattern decreased from 98.2%(168/171)under 44 age group to 13,3%(17/128) over 65 age group and mature cell pattern increased from 1.8%(3/171) under 44 age group to 86.7%(111/128) oyer 65 age group. Mean T-value of each region of lumbar spine and femur of mature cell pattern were lower than that of atrophic cell pattern about -1,5. And osteoporosis has noted in atrophic cell pattern showing odds ratio Ll 13.9, L2 15.3, L3 12.0, L4 10,4, UK 6.7, WT 10.9 and TR 4.1.Atrophic cell pattern started to increase after 45 years of age and osteoporosis of a trophic cell pattern started after 55 years of age. During 50 to 64 years of age period, L3, L4 and WT revealed parallel increased of osteopenia and osteoporosis and Ll, L2 revealed decreased of osteopenia and increased of osteoporosis. nia Conclusion: Above findings suggest that atrophic cell pattern of Pap smear precedes osteoporosis about 10 years and one of predictor of osteoporosis.

• The Korean Journal of Mycology
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• v.48 no.2
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• pp.151-160
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• 2020

The goal of this study was to investigate the diversity present among wild yeasts obtained from soils of spice fields and from mountain soils, and to further, characterize previously unrecorded novel wild yeast strains. In total, 36 strains from 17 different species of wild yeasts were isolated from 35 soil samples obtained from garlic fields of Geumsan, Chungcheongnam-do, Korea. Among these, six yeast strains of Trichosporon moniliiforme, and four strains each of Papiliotrema flavescens and Candida melibiosica species were isolated. Additionally, 22 strains of 18 different species of wild yeasts were isolated from 32 soil samples collected from the ballonflower and ginger fields of Geumsan, Korea. Finally, 46 strains of wild yeasts were isolated from 35 soil samples obtained from Mt. Daedun in Geumsan, Korea. Among the total of 106 isolated wild yeast strains, 10 strains, including Debaryomyces vindobonensis GHY31-3 represented novel yeast strains which were previously unrecorded. All the 10 previously unrecorded yeasts were oval or global in shape, and five strains, including Filobasidium stepposum SFG1-4 formed ascospores. Three strains, including Pseudozyma alboarmeniaca CD 23-5 grew well in vitamin-free medium. Cell-free extract obtained from Filobasidium magnum SFG1-3 indicated 28.6% of xanthine oxidase inhibitory activity.

• Advances in Traditional Medicine
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• v.5 no.2
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• pp.100-109
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• 2005

In South America, natural products with unknown drug effects are used as folk remedies and for preventive medicine. Among South American natural products, we directed our attention to Propolis, which have been known as medicinal plants, and examined the mechanisms by which these substances affect antioxidant activity, anti-tumor activity and immunoresponse. When the antioxidant activities of Propolis were examined by the DPPH and Rhoudan iron methods, since Propolis contains high levels of flavonoids, it is thought that flavonoids may be responsible for the antioxidant activity in this study. In the examination of immunoenhancement activity, we measured lymphocyte versus polymorphonuclear leukocyte ratios (L/P activity). The number of lymphocytes was significantly increased in groups treated with Proplolis. Specifically, slightly high levels of $IFN-{\gamma}$ were measured in mice bearing the S-180 carcinoma, after administration of Propolis. This strongly suggests that cellular immunity is especially activated by treatment with Propolis, because production of $IFN-{\alpha}$ is limited to the T cells and NK cells stimulated by mitogen and sensitized antigen. $TNF-{\alpha}$ shows a different extent and mechanism of action depending on the target cells. When $TNF-{\alpha}$ was measured in mice bearing the S-180 carcinoma, mice treated with Propolis showed slightly higher $TNF-{\alpha}$ levels as compared to the control group. This suggests that activated macrophages produce $TNF-{\alpha}$ in mice treated with Prapolis, since activated macrophages and lymphocytes are the source of most $TNF-{\alpha}$. When anti-tumor action was examined using two kinds of sarcoma (Ehrlich solid carcinoma and Sarcoma-180 carcinoma), tumor-suppressive ratios after treatment with Propolis was 29.1%. When Sarcoma-180 solid carcinoma was used, tumor-suppressive ratios were 62%. Thus, Propolis showed strong anti-tumor activity against two kinds of solid carcinoma. Taken altogether, this strongly suggests that Propolis enhances original functions of macrophages and NK cells, and as a result, secondarily enhances the immune reaction and suppresses tumor growth.