• Title/Summary/Keyword: Anti-tumor

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Diagnosis and Treatment of Latent Tuberculosis Infection due to Initiation of Anti-TNF Therapy

  • Shim, Tae Sun
    • Tuberculosis and Respiratory Diseases
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    • v.76 no.6
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    • pp.261-268
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    • 2014
  • Patients with immune-mediated inflammatory diseases (IMIDs) are increasingly being treated with anti-tumor necrosis factor (TNF) agents and are at increased risk of developing tuberculosis (TB). Therefore, diagnosis and treatment of latent TB infection (LTBI) is recommended in these patients due to the initiation of anti-TNF therapy. Traditionally, LTBI has been diagnosed on the basis of clinical factors and a tuberculin skin test. Recently, interferon-gamma releasing assays (IGRAs) that can detect TB infection have become available. Considering the high-risk of developing TB in patients on anti-TNF therapy, the use of both a tuberculin skin test and an IGRA should be considered to detect and treat LTBI in patients with IMIDs. The traditional LTBI treatment regimen consisted of isoniazid monotherapy for 9 months. However, shorter regimens such as 4 months of rifampicin or 3 months of isoniazid/rifampicin are increasingly being used to improve treatment completion rates. In this review, the screening methods for diagnosing latent and active TB before anti-TNF therapy in patients with IMIDs will be briefly described, as well as the current LTBI treatment regimens, the recommendations for managing TB that develops during anti-TNF therapy, the necessity of regular monitoring to detect new TB infection, and the re-initiation of anti-TNF therapy in patients who develop TB.

Ginkgo biloba Leaf Extract Regulates Cell Proliferation and Gastric Cancer Cell Death

  • Kim, Da Hyun;Yang, Eun Ju;Lee, JinAh;Chang, Jeong Hyun
    • Biomedical Science Letters
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    • v.28 no.2
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    • pp.92-100
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    • 2022
  • Ginkgo biloba Leaf Extract (GBE) is an extract from leaves of the Ginkgo biloba tree, widely used as a health supplement. GBE can inhibit the proliferation of several types of tumor cell. Although it is known to have anti-cancer effects in breast cancer and skin cancer, research related to gastric cancer is still insufficient. Based on results showing anti-cancer effects on solid cancer, we aimed to determine whether GBE has similar effects on gastric cancer. In this study, the anti-cancer effect of GBE in gastric adenocarcinoma was investigated by confirming the cell proliferation inhibitory effect of AGS cells. We also evaluated whether GBE regulates expression of the tumor suppressor protein p53 and Rb. GBE has apoptotic effects on AGS cells that were confirmed by changes in anti-apoptosis protein Bcl-2, Bcl-xl and pro-apoptosis protein Bax levels. Wound healing and cell migration were also decreased by treatment with GBE. Furthermore, we verified the effects of GBE on mitogenic signaling by investigating AKT target gene expression levels and revealed downregulated Sod2 and Bcl6 expression. We also confirmed that expression of inflammation-related genes decreased in a time-dependent manner. These results indicate that GBE has an anti-cancer effect on human gastric cancer cell lines. Further research on the mechanism of the anti-cancer effect will serve as basic data for possible anti-cancer drug development.

Studies on the Synthesis and in vitro anti-Tumor Activity of Dihydroberberine Derivatives

  • Kim, In-Jong;Park, Yea-Jin;Kim, Joo-il;Lee, Kyung-Tae;Kim, Sin-Kyu
    • Archives of Pharmacal Research
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    • v.20 no.5
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    • pp.476-479
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    • 1997
  • Three types of dihydroberberine derivatives such as spirobenzylisoquinoline, benzindenoazepine and cyclopropanated quinolizine species were synthesized from dihydroberberine for the investigation on their anti-tumor activity. Among them, cyclopropanated quinolizine species were more effective than spirobenzylisoquinoline and benzindenoazepine against P-388 and L-1210 leukemia cell.

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Effect of Extracts from the Codonopsis pilosulae Radix on P388 Lymphocytic Leukemia in vivo (만삼(蔓蔘)엑기스가 임파성백혈병 P388에 미치는 영향)

  • Lee, Ihn-Rhan
    • Korean Journal of Pharmacognosy
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    • v.11 no.2
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    • pp.104-107
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    • 1980
  • Mansam, the root of Codonopsis pilosula (Campanulaceae) has a action on blood metabolism. It has been known to possess anti leukemic effect by increasing of red blood cell, at same time, by decreasing white blood cell, with this connection, present study is aimed to clarify such potential anti leukenic effect by testing ethanol extract and chloroform extract against murine tumor model, lymphocytic leukemia P388. The data indicated that these extracts appeared to be inactive against this tumor line.

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Antioxidant enzyme acitivity of flavonol quercetin in the presence of different anticxidants.

  • Hue, Jeong-Sim;Kim, An-Keun
    • Proceedings of the PSK Conference
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    • 2003.10b
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    • pp.159.3-160
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    • 2003
  • It has been known that quercetin is one of bioflavonid compounds and has anti-tumor effect by suppressing tumor growth in vitro and in vivo, including multiple biological effects by antioxidant and effective anti-inflammatory agent. The present study investigated whether quercetin can enhance antioxidant enzyme activity (glutathione proxidase: GPX, superoxide dismutase: SOD, catalase: CAT) and regulate the intracellular reactive oxygen intermediate levels on the B16F10 murine melanoma cells in the presensece of vitamin E, L-ascorbic acid (vitamin C) and reduced glutathione (GSH). (omitted)

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Inhibitory effect of Hwang lyun tang water extract on inflammatory mediators

  • Chae, Hee-Sung;Kang, Ok-Hwa;Kwon, Dong-Yeul
    • Journal of Evidence-Based Herbal Medicine
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    • v.1 no.1
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    • pp.7-11
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    • 2008
  • The purpose of this study was to investigate the anti-inflammatory effects of extract from Hwang lyun tang (HLT) on the THP-1 cell and HMC-1 cell. To evaluate of anti-inflammatory of HLT, we examined cytokines production in lipopolysacchride (LPS)-induced THP-1 cell and A23187, PMA-induced HMC-1 cell. Extract of HLT inhibit LPS-induced interleukin (IL)-8 production in human monocyte THP-1 cells. Extract of HLT inhibit A23187, PMA-induced IL-8, tumor necrosis factor-$\alpha$ (INF-$\alpha$) production in HMC-1 cells. HLT down-regulated LPS-induced IL-8 production and A23187, PMA-induced IL-8, TNF-$\alpha$ production, which may be provide a clinical basis for anti-inflammatory properities of HLT.

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Effect of Jak-Yak Tang water extract on expression of cytokin and chemokine

  • Oh, You-Chang;Kang, Ok-Hwa;Kwon, Dong-Yeul
    • Journal of Evidence-Based Herbal Medicine
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    • v.1 no.1
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    • pp.1-5
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    • 2008
  • Objectives : The purpose of this study was to investigate the anti-inflammatory effects of extract from Jak-Yak Tang (JYT) on the THP-1 cell and HMC-1 cell. Method : To evaluate of anti-inflammatory of JYT, we examined cytokines production in lipopolysacchride (LPS)-induced THP-1 cell and A23187, PMA-induced HMC-1 cell. Result : Extract of JYT inhibit LPS-induced interleukin (IL)-8 production in human monocyte THP-1 cells. Extract of JYT inhibit A23187, PMA-induced IL-8, tumor necrosis factor-$\alpha$ (INF-$\alpha$) production in HMC-1 cells. Conclusion : NT down-regulated LPS-induced IL-8 production and A23187, PMA-induced IL-8, TNF-$\alpha$ production, which may be provide a clinical basis for anti-inflammatory properities of JYT.

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Anti-microbial Activities Against Oral Microbes and Growth-Inhibitory Effect on Oral Tumor Cell of Extracts of Perilla and Mugwort (들깨잎과 쑥 추출물의 구강병 원인균에 대한 항균 및 KB 세포 증식 억제효과)

  • Jo, Min-Jung;Min, Kyung-Jin
    • Journal of Environmental Health Sciences
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    • v.33 no.2 s.95
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    • pp.115-122
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    • 2007
  • Methanol extracts of Perilla and Mugwort were stepwise extracted with hexane, chloroform, ethyl acetate, butanol and water. Anti-microbial activities and inhibitory effect on growth of oral tumor cell of each extract were investigated. Each extracts of Perilla and Mugwort were investigated to anti-microbial effects on oral microbes by means of agar diffusion method and MIC. These results suggest that the hexane extracts of Perilla and Mugwort have antimicrobial activities against S. mutans and potent inhibitory Effect to KB cell growth.