• Title/Summary/Keyword: Il-Young Ahn

Search Result 770, Processing Time 0.039 seconds

Effects of TAM (Taraxacum mongolicum) on Th2 Cytokine Production in MC/9 Mast Cells (포공영(蒲公英)이 MC/9 mast cell에서의 Th2 cytokine 발현에 미치는 영향)

  • Jang, Moon-Hee;Choi, Jae-Song;Bae, Na-Young;Ahn, Teak-Won
    • Journal of Sasang Constitutional Medicine
    • /
    • v.24 no.1
    • /
    • pp.54-65
    • /
    • 2012
  • 1. Objective : The purpose of this study is to investigate the effects of TAM (Taraxacum mongolicum) on Th2 cytokine production in MC/9 mast cells. 2. Methods : The effects of TAM was analyzed by ELISA and Real-time PCR in MC/9 mast cells. Levels of IL-5, IL-13 were measured using enzyme-linked immunosorbent assays(ELISA). mRNA levels of IL-4, IL-5, IL-6, IL-13 were analyzed with Real-time PCR. 3. Results : 1) TAM inhibited the IL-4 production significantly in comparison to PI-control group at concentration of $50{\mu}g/ml$, $100{\mu}g/ml$, $200{\mu}g/ml$. 2) TAM inhibited the IL-13 production significantly in comparison to PI-control group at concentration of $50{\mu}g/ml$, $100{\mu}g/ml$, $200{\mu}g/ml$. 3) TAM inhibited the IL-4 mRNA expression significantly in comparison to PI-control group at concentration of $100{\mu}g/ml$. 4) TAM inhibited the IL-5 mRNA expression significantly in comparison to PI-control group at concentration of $50{\mu}g/ml$, $100{\mu}g/ml$. 5) TAM inhibited the IL-6 mRNA expression significantly in comparison to PI-control group at concentration of $100{\mu}g/ml$. 6) TAM inhibited the IL-13 mRNA expression significantly in comparison to PI-control group at concentration of $100{\mu}g/ml$. 4. Conclusions : These results indicate that TAM (Taraxacum mongolicum) has the effect of decreasing the Th2 cytokine production in the MC/9 mast cell.

Implementation of Retrieval System for Multi-Objects using Invariant Moments (불변 모멘트를 이용한 다중객체 검색시스템 구현)

  • Ahn, Kwang-Il;Song, Young-Jun;Han, Jae-Hyeck;Ahn, Jae-Hyeong
    • Proceedings of the Korea Information Processing Society Conference
    • /
    • 2000.04a
    • /
    • pp.864-867
    • /
    • 2000
  • 영상과 같은 다양하고 복잡한 데이터 검색은 기존의 키워드를 이용한 검색이 아닌 내용 기반 검색 방법이 요구된다. 본 논문에서는 입력된 사용자 질의를 객체의 위치이동이나 회전, 크기변화에 민감하지 않은 불변모멘트(Invariant Moments)값을 이용하여 효율적으로 검색할 수 있는 시스템을 구현하였다. 영상내의 단일 객체 뿐만 아니라 다중 객체들도 효과적으로 검출하기 위해 레이블링(Labeling) 알고리즘을 적용해 각각의 객체를 따로 분리하여 불변모멘트를 적용하는 방법을 이용했다. 또한, 검색 시간 단축 및 영상의 효율적인 인덱싱(Indexing)을 위해 해싱을 응용한 기법을 적용하였다. 이로써, 기존의 전체 영상의 특징을 가지고 정확히 표현할 수 없는 객체들을 정확히 표현해 줌으로서 좀더 정확한 검색 결과를 얻을 수 있었다.

  • PDF

HANTZSCH DIHYDROPYRIDINE: AN EFFECTIVE AND CONVENIENT REGIOSELECTIVE REDUCING AGENT FOR 5-BENZYLIDENE-2,4- THIAZOLIDINEDIONE DERIVATIVES

  • Lee, Hong-Woo;Kim, Bok-Young;Ahn, Joong-Bok;Son, Hoe-Joo;Lee, Jae-Wook;Ahn, Soon-Kil;Hong, Chung-Il
    • Proceedings of the PSK Conference
    • /
    • 2003.04a
    • /
    • pp.252.3-252.3
    • /
    • 2003
  • An effective and convenient regioselective reduction of 5-benzylidene 2,4-thiazolidinedione derivatives to the corresponding 5-benzyl 2,4-thiazolidinedione derivatives has been accomplished using 3,5-dicarboethoxy-2,6-dimethyl-1,4-dihydropyridine (Hantzsch dihydropyridine ester: HEH) with silica gel as an acid catalyst in a good yield.

  • PDF

Synthesis and biological activity of novel substituted pyridines and purines containing 2,4-thiazolidinedione

  • Kim, Bok-Young;Ahn, Joong-Bok;Lee, Hong-Woo;Kim, Joon-Kyum;Shin, Jae-Soo;Kang, Sung-Kwon;Lee, Jung-Hwa;Ahn, Soon-Kil;Lee, Sang-Jun;Hong, Chung-Il;Yoon, Seung-Soo
    • Proceedings of the PSK Conference
    • /
    • 2003.10b
    • /
    • pp.187.1-187.1
    • /
    • 2003
  • Type 2 diabetes is characterized by high level of blood glucose and insulin and impaired action. In recent years, the treatment of type 2 diabetes has been revolutionized with the advent of thiazolidinedione (TZD) class of molecules that ameliorate insulin resistance and thereby normalize elevated blood glucose levels. These TZDs are synthetic, high-affinity ligands of peroxisome proliferator activated receptor-gamma (PPAR${\gamma}$); a member of the nuclear receptor family that controls the expression of genes in the target tissues of insulin action. (omitted)

  • PDF

Combined Detection of Serum IL-10, IL-17, and CXCL10 Predicts Acute Rejection Following Adult Liver Transplantation

  • Kim, Nayoung;Yoon, Young-In;Yoo, Hyun Ju;Tak, Eunyoung;Ahn, Chul-Soo;Song, Gi-Won;Lee, Sung-Gyu;Hwang, Shin
    • Molecules and Cells
    • /
    • v.39 no.8
    • /
    • pp.639-644
    • /
    • 2016
  • Discovery of non-invasive diagnostic and predictive biomarkers for acute rejection in liver transplant patients would help to ensure the preservation of liver function in the graft, eventually contributing to improved graft and patient survival. We evaluated selected cytokines and chemokines in the sera from liver transplant patients as potential biomarkers for acute rejection, and found that the combined detection of IL-10, IL-17, and CXCL10 at 1-2 weeks post-operation could predict acute rejection following adult liver transplantation with 97% specificity and 94% sensitivity.

A Study on Thermodynamics Specific Estimation of Inner Part of Tunnel Structure used FDS (FDS를 사용한 터널구조물 내부 열역학적 특성예측에 관한 연구)

  • Lee, Young-Jae;Ahn, Chan-Sole;Kim, Heung-Yeol;Kim, Hyung-Jun
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
    • /
    • 2009.04a
    • /
    • pp.540-547
    • /
    • 2009
  • 국내도로터널 화재안전성을 확보하기 위하여 FDS를 이용하여 ISO, 도로터널 방재시설기준, Runner Hammer 터널기준의 시나리오에 따라 콘크리트 터널구조물의 내부 열역학적 특성을 예측하였다. 화재로 인한 터널내부의 온도분포를 측정하기 위하여 화염원으로부터 터널입구 방향으로 5m 마다 터널 단면의 온도분포를 추출하였고, 터널의 중심을 지나는 길이방향 단면의 온도분포를 해석하였다. 해석결과 온도는 500${\sim}$950$^{\circ}C$까지의 분포를 나타내었고 가장 높은 온도영향을 받은 Runner Hammer 터널기준의 내부 열환경 조건에서는 터널 단면이 모두 화염에 직접적으로 노출 때문에 단면전체가 800${\sim}$950$^{\circ}C$까지 상승하였다. 특히 상부부분은 900$^{\circ}C$ 이상의 고온에 장시간 노출되고 있어 깊이 50mm 지점의 온도가 250$^{\circ}C$까지 상승하였다.

  • PDF

The Effects of Forsythiae Frucus on Inflammatory Genes and Cyto-pathological Alterations in Chronic Non-Bacterial Prostatitis Rat Model (연교(連翹)가 만성 비세균성 전립선영 Rat의 염증발현인자 및 세포조직 변화에 미치는 영향)

  • Lee, Jin-Sin;Ahn, Young-Min;Ahn, Se-Young;Doo, Ho-Kyung;Lee, Byung-Cheol
    • The Journal of Internal Korean Medicine
    • /
    • v.27 no.3
    • /
    • pp.639-652
    • /
    • 2006
  • Objective : The etiology of chronic prostatitis is likely multifactorial, resulting from either a cascade of events after an initiating factor or from a variety of etiologic mechanisms. There is substantiating evidence to support the role of the inflammatory responses in its pathogenesis, and the clinical value in the evaluation of therapeutic efficacy. Forsythiae Frucus has been traditionally used in treatment of inflammatory diseases, including of prostatitis and urinary tract inflammation. In this study, we investigated the effects of Forsythiae Frucus on inflammatory cytokines and cyto-pathological alternation in the rat model of chronic non-bacterial prostatitis induced by castration and $17{\beta}$-estradiol treatment. Methods : Two-month-old rats were treated with $17{\beta}$-estradiol after castration for induction of experimental non-bacterial prostatitis. which is similar to human chronic prostatitis in histopathological profiles. Forsythiae Frucus as an experimental specimen, and testosterone as a positive control, were administered orally. The prostates were evaluated by histopathologlcal parameters including the epithelial score and epithelio-stromal ratio for glandular damage. and the expression of inflammatory cytokine genes including interleukin (IL)-$1{\beta}$, IL-5, IL-12, tumor necrosis factor (TNF)-$\alpha$. eotaxin, inducible nitric oxide synthase (iNOS) and cyclooxygenase-2(cox-2). Results : While prostates of control rats revealed severe acinar gland atrophy and stromal proliferation. the rats treated with Forsythiae Frucus showed a diminished range of tissue damage. Epithelial score was improved in the Forsythiae Frucus group over that of the control (P<0.05). The epithelia-stromal ratio was lower in the Forsythiae Frucus group when compared to that of the control (P<0.05). In the reverse transcription-polymerase chain reaction (RT-PCR) of inflammatory cytosine genes. Forsythiae Frucus inhibited the expression of IL-$1{\beta}$, TNF-$\alpha$, iNOS, cox-2 genes, while it modulated the expression of IL-5, which is an anti-inflammatory cytokine. Conclusions : These findings suggest that Forsythiae Frucus may protect the glandular epithelial cells and also inhibit stromal proliferation in association with the immune modulation including the suppression of inflammatory cytokines and increase of anti-inflammatory cytokines. From theses results. we suggest that Forsythiae Frucus could be a useful remedy agents for treating chronic non-bacterial prostatitis.

  • PDF

Differences in Characteristics of Recycled ONP for CaCO3 Adding Techniques (CaCO3 첨가법에 따른 재생 ONP의 특성변화)

  • Ahn, Young-Jun;Nam, Seong-Young;Um, Nam-Il;Ahn, Ji-Whan;Han, Choon
    • Journal of the Korean Ceramic Society
    • /
    • v.51 no.2
    • /
    • pp.97-102
    • /
    • 2014
  • In order to improve the refresh rate of old newspaper(ONP), PCC shape-controlling experiments were carried out. The effect of a PCC polymorph on improving the quality of old newspaper was studied for a transformation from waste paper to eco-friendly paper. The synthesis of PCC consists of an in-situ process and a loading process to enhance the refresh rate of old newspaper. The characteristics between the in-situ process and the loading process could be analysed by SEM analyses of coated fiber surfaces. The retention rate ranges from 65 to 67% after the application of the in-situ process, and that after the loading process ranges from 55 to 58%. The retention rates thus show a difference of about 7-10%. In addition, the whiteness and ERIC characteristics of the in-situ process gave more efficient results than those of the loading process.

Marasmus and Kwashiorkor by Nutritional Ignorance Related to Vegetarian Diet and Infants with Atopic Dermatitis in South Korea

  • Chung, Sang-Jin;Han, Young-Shin;Chung, Seung-Won;Cho, Young-Yeun;Ahn, Kang-Mo;Park, Hwa-Young;Lee, Sang-Il;Park, Hye-Mi
    • Proceedings of the KSCN Conference
    • /
    • 2004.05a
    • /
    • pp.415-416
    • /
    • 2004
  • Infants and children with food related Atopic dermatitis (AD) need extra dietary efforts to maintain optimal nutrition due to food restriction to prevent allergy reactions. However, nutrition ignorance and food faddism make patients even more confused and practice desirable diet more difficult. The objective of this study was to report the AD patients' malnutrition cases in Korea.(omitted)

  • PDF

The Effect of Suhwagije-tang Distillate on the Immune Activity of Spleen Cells of Aged Rats (수화기제탕(水火旣濟湯) 증류액이 노화 흰쥐의 비장세포 면역활성에 미치는 영향)

  • Choi, Jae-Song;Bae, Na-Young;Ahn, Teak-Won
    • Journal of Sasang Constitutional Medicine
    • /
    • v.23 no.3
    • /
    • pp.374-390
    • /
    • 2011
  • 1. Objectives: The purpose of this study is to investigate the effect of Suhwagije-tang(SGT) distillate on the immune activity of spleen cells of aged SD rats. 2. Methods: We used 10, 50, 72 weeks old SD rats in this study. Spleen cells from SD rats were stimulated with ConA and treated with 1% Vitamin C(Vit.C) or Suhwagijetang distillate(SGT). After 24 hours, the concentrations of IL-2, IL-4, IL-10, IFN-${\gamma}$ in the cell culture supernatant were measured by ELISA. 3. Results and Conclusions 1) At all concentration of SGT distillate, survival rates of liver cells were higher than the control group. In addition, 50% SGT distillate group's cell survival rates were significantly higher than other groups. 2) In 10 weeks SD rats(SGT group), the concentration of IL-2 significantly decreased in comparison with ConA group, Vit.C group. In 52 weeks SD rats(SGT group), the concentration of IL-2 significantly decreased in comparison with ConA group. 3) In 10, 52 weeks SD rats(SGT group), the concentration of IL-4 significantly decreased in comparison with ConA group. 4) In 10 weeks SD rats(SGT group), the concentration of IL-10 significantly decreased in comparison with ConA group. And in 72 weeks SD rats(SGT group), the concentration of IL-10 significantly increased in comparison with Vit.C group. 5) In 52, 72 weeks SD rats(SGT group), the concentration of IFN-${\gamma}$ significantly decreased in comparison with 10 weeks SD rats(SGT group). These results suggest that Suhwagije-tang(SGT) distillate has the effect of increasing the immune activity of spleen cells of aged SD rats.