폐포 대식세포 및 단핵구가 Interleukin-2 Enhanced Natural Killer 및 LAK Activity에 미치는 영향

조철호 ( Jo Cheol Ho ),김병일 ( Kim Byeong Il ),김세규 ( Kim Se Gyu ),천선희 ( Cheon Seon Hui ),김형중 ( Kim Hyeong Jung ),장준 ( Jang Jun ),안철민 ( An Cheol Min ),김성규 ( Kim Seong Gyu ),이원영 ( Lee Won Yeong ),윤정구 ( Yun J 대한내과학회 1992 대한내과학회지 Vol.42 No.5

Alveolar macrophages (AM) are thought to function as primary effector cells against tumors growing in the lung. Systemic administration of lymphokine activated killer (LAK) cells and IL-2 resulted in partial antitumor response in patients with advanced cancer. LAK activity is influenced by various factors. We studied the effects of AM and blood monocytes from healthy donors on IL-2 enhanced NK activity against K-562 cells and LAK activity against Raji cells utilizing a 4h ^(51)Cr release assay. The following results were obtained: 1) The addition of different doses of human blood monocytes showed no suppression or enhancement of IL-2 enhanced NK and LAK activity. 2) The addition of high dose of AM (Lymphocyte: AM=1:1) significantly suppressed IL-2 enhanced NK activity. Smaller doses of AM (Lymphocyte: AM= 10:1and 100:1) did not suppress IL-2 enhanced NK activity. 3) The addition of high dose of AM (Lymphocyte: AM = 1:1 and 10:1) significantly suppressed LAK activity. The smallest dose of AM (Lymphocyte: AM= 100:1) did not suppress LAK activity. In conclusion, IL-2 enhanced NK and LAK activity were dose-dependently suppressed by human alveolar macrophages. However IL-2 enhanced NK and LAK activity were not suppressed by blood monocytes.

Ameliorating effect of dipotassium glycyrrhizinate on an IL-4- and IL-13-induced atopic dermatitis-like skin-equivalent model

Lee, Sung Hoon,Bae, Il-Hong,Choi, Hyangtae,Choi, Hyeong Won,Oh, Soojung,Marinho, Paulo A.,Min, Dae Jin,Kim, Dae-Yong,Lee, Tae Ryong,Lee, Chang Seok,Lee, Jongsung Springer-Verlag 2019 Archives of dermatological research Vol.311 No.2

오미자, 황련이 BEAS-2B 인간 기관지상피세포의 IL-6, IL-16, GM-CSF mRNA level에 미치는 영향

김동일 ( Kim Dong Il ),정희재 ( Jeong Hui Jae ),정승기 ( Jeong Seung Gi ),이형구 ( Lee Hyeong Gu ) 경희대학교 경희의료원 2001 慶熙醫學 Vol.17 No.2

Tumor necrosis factor-α and interleukin-1β increases CTRP1 expression in adipose tissue

Kim, Kun-yong,Kim, Hwa Young,Kim, Jae Hyeong,Lee, Chul-Ho,Kim, Do-Hyung,Lee, Young Ho,Han, Seung Hyun,Lim, Jong-Seok,Cho, Dae Ho,Lee, Myeong-Sok,Yoon, Sukjoon,Kim, Keun Il,Yoon, Do-Young,Yang, Young Elsevier 2006 FEBS letters Vol.580 No.16

<P><B>Abstract</B></P><P>CTRP1, a member of the CTRP superfamily, consists of an N-terminal signal peptide sequence followed by a variable region, a collagen repeat domain, and a C-terminal globular domain. CTRP1 is expressed at high levels in adipose tissues of LPS-stimulated Sprague-Dawley rats. The LPS-induced increase in CTRP1 gene expression was found to be mediated by TNF-α and IL-1β. Also, a high level of expression of CTRP1 mRNA was observed in adipose tissues of Zucker diabetic fatty (<I>fa/fa</I>) rats, compared to Sprague-Dawley rats in the absence of LPS stimulation. These findings indicate that CTRP1 expression may be associated with a low-grade chronic inflammation status in adipose tissues.</P>

CagL 재조합 단백질 접종후에 Mongolian gerbil에서 나타나는 Helicobacter pylori 감염에 대한 반응

박은정,장성일,최윤희,김진문,김애련,김지혜,우계형,유윤정,이성행,차정헌,Bak, Eun-Jung,Jang, Sung-Il,Choi, Yun-Hui,Kim, Jin-Moon,Kim, Ae-Ryun,Kim, Ji-Hye,Woo, Gye-Hyeong,Yoo, Yun-Jung,Lee, Sung-Haeng,Cha, Jeong-Heon 한국미생물학회 2012 미생물학회지 Vol.48 No.2

Helicobacter pylori는 만성 위염, 소화성 궤양, 위암의 중요한 역학적 인자중 하나이다. H. pylori의 독성인자중 CagL은 숙주 세포와 H. pylori의 제 4형 분비기관(Type 4 secretion system)을 연결하는 adhesin으로 작용하는 섬모 단백질로 H. pylori가 발병하는데 중요한 역할을 하는 것으로 알려져 있다. 이번 연구는 저빌에 H. pylori를 감염시킨 동물 모델을 이용하여 CagL 재조합 단백질을 면역화시켰을 때 나타나는 효과를 평가하였다. 재조합 CagL은 클론되었고, 과발현시켜 정제하여 준비하였다 저빌은 H. pylori 감염 대조군과 H. pylori 감염 CagL 재조합 단백질 접종군으로 분류하였고, 접종시 알루미늄 애쥬번트를 사용하였다. 일주일 간격으로 4회 근육내 접종하였고, 마지막 접종 일주일 후, 모든 저빌에 H. pylori 7.13 균주를 $1{\times}10^9\;bacteria/500{\mu}l$ 농도로 위내 투여하였다. H. pylori 감염 6주째 모든 저빌을 희생하여 혈청 IgG 반응평가를 위한 ELISA를 실시하였고, 위에서는 집락화된 H. pylori의 수평가, 병리조직학적 평가 및 사이토카인 유전자발현을 조사하였다. CagL 재조합 단백질접종 일주일 후부터 H. pylori 감염 CagL 재조합 단백질 접종군의 혈청내 IgG 항체형성이 유의적으로 증가하였다. 위에서의 집락화된 세균수는 두군의 차이가 없었다. 저빌 체중에 대한 위무게 비율는 H. pylori 감염 CagL 재조합 단백질 접종군이 유의적으로 감소하였으나 병리조직학적 평가에서는 유의적인 차이는 확인하지 못하였다. 위에서의 IL-$1{\beta}$와 KC (IL-8 homologues)의 유전자발현 정도도 두 군사이에 유의적인 차이는 없었다. 이번 결과는 CagL 재조합 단백질의 접종은 IgG 항체형성은 효과적으로 자극하였지만 면역화된 숙주에서 세균 집락화의 감소 및 병변형성의 방어까지는 유도하지 못한 것으로 나타났으며, 앞으로 H. pylori 감염에 대해 유효한 면역 반응 및 질병 방어 효과를 나타내기 위해서 CagL을 포함한 다른 종류의 재조합 항원 사용 및 보조적으로 전신 면역 및 점막 면역을 효과적으로 유도하기 위해 안정성있는 애쥬번트의 사용을 고려해야 할 것으로 사료된다. Helicobacter pylori is an important factor of chronic gastritis, digestive ulcer, and stomach cancer. CagL, a virulence factor of H. pylori, is well-known as a pilus protein which acts as adhesion to host cell and a component of Type 4 secretion system. In this study, we evaluated the protective response of recombinant CagL protein (rCagL) using Mongolian gerbil animal model for H. pylori infection. The cagL gene was cloned from 26695 H. pylori followed by over-expression and purification of the protein in E. coli. Mongolian gerbils were immunized with rCagL protein mixed with aluminum adjuvant via intramuscular injections once a week during 4 weeks. At a week after the last immunization, the Mongolian gerbils were administrated with H. pylori 7.13 strain into the stomach and sacrificed to measure antibody titer on rCagL by ELISA and bacterial colonization in the stomach, and to examine the histopathological changes and cytokine expression at 6 week after challenge. Antibody titers on recombinant protein were significantly increased from a week after the first immunization. There was no significant change of the number of bacterial colony between control group and immunized group. The relative stomach weight was significantly decreased in immunized group, but the significant change of histopathological assessment was not observed in the stomach. Cytokine expression such as IL-$1{\beta}$ and KC also was not significantly different between control and immunized groups. These results indicate that rCagL could effectively induce the formation of the specific IgG antibodies. However, bacterial colonization and histopathological lesions could not be inhibited by the immunization in the stomach, indicating not enough protection against H. pylori infection. We consider that along with CagL other adequate antigens could be needed stimulating immune response and inducing protective effects against gastric disease, and also a better adjuvant could be considered.

의약정보담당자(MR)의 기능 및 역할에 관한 연구

이동일,제해관,윤석준,안형식,문영배 한국의료QA학회 2003 한국의료질향상학회지 Vol.10 No.1

Background : Aim of this study is focused on the analysis of the needed abilities of medical representatives resulting in building up the market and increasing sales. It is to propose methods to increase this ability ensuring continuous growth in market share and profit. Methods : A survey was conducted between January 6 and May 31, 2003. Using SPSS(Version 10.0), the collected data was analyzed by Hotelling T2, factor analysis. Some hypotheses were selected to include the conclusion. Some questionnaires for physicians working in hospitals or clinics and the medical representatives working in a pharmaceutical company were created and asked to them to either prove or reject those hypotheses. The results were analyzed to find the primary factors that effect the interactions between physician and the medical representatives. These factors were also studied along with the theoretical research based on published references. Results : The results were as follows. The main reasons for the physician to meet with a medical representatives were collection of product informations needed for patient treatment and collection of informations on current medical issue and as well as personal interests. The main parameters by which physicians evaluate the medical representatives are human relationship including sincerity and manners and supply of accurate and unbiased information on products. Overall, the medical representatives’ perception on the importance of medical knowledge and ability to deliver it are lower than that expected by physicians. Conclusion : Medical and pharmaceutical companies’ environment are changed rapidly. And those changes forced medical representatives to set new roles and competency. In order to drive away from the past ‘rule of thumb’ and ‘adaptation to circumstance’, optimal method and systemic development to train and support the medical representatives should be quipped. They will help ,medical representatives to be specialists in medical knowledge and to understand the exact need of health care professions. Product competitiveness will be increased and eventually successful business can be achieved through it.

牧楡湯이 人體 肺癌細胞의 變化에 미치는 影響에 關한 分子生物學的 硏究

李炯周,金相贊,徐富一,金先熙,卞晟僖 대한본초학회 1999 大韓本草學會誌 Vol.14 No.1

This experimental study was performed to investigate the effects of Mokyou-Tang on cell cycle and gene expressions of human lung cancer cell. I examined the cell cycle progression and cell cycle-related gene expression in A549 using a flow cytometry and a quantitative PT-PCR analysis. The treatment groups, in accordance with concentration of Mokyou-Tang were classified as 3 group(MYT 100㎕/㎖, MYT 500㎕/㎖, MYT 1,000㎕/㎖), and according to treatment time, were classified as 2 group(24hours, 48hours). The results were summarized as follows; 1. In cell cycle stage, MYT 100㎕/㎖(48hours) and 1000㎕/㎖(48hours) groups were increased as compared with control group, especially 1000㎕/㎖(48hours) group showed eminent increase. 2. In p53 gene, MYT 500㎕/㎖(48hours) and 1000㎕/㎖(48hours) groups showed eminent suppressive effect to cancer cell. 4. CDKNI gene was decreased in all treatment groups, this mean that MYT has suppressive effect to proliferation of cancer cell. 4. In GADD45 gene was decreased in all treatment groups, this mean that MYT has suppressive effect to proliferation of cancer cell. The results suggest that MYT promotes G1 cell cycle arrest and suppresses the proliferation of cancer cell. Thus, it seems likely that MYT has suppressive effect to proliferation of lung cancer cell.

내측회장동맥에 의해 형성된 척수경막동정맥루로 인한 척수병증 1예

이일형,배재천,이상무,김진혁,권기한,이병철 대한신경과학회 1999 대한신경과학회지 Vol.17 No.3

마리화나 흡연 후 발생한 뇌경색

이일형,김성민,배재천,권기한,이병철 대한신경과학회 1999 대한신경과학회지 Vol.17 No.2

부분 계측결과에 의한 시간영역 구조안전도 모니터링

이형진,고광일 여수대학교 1999 論文集 Vol.14 No.2

In general, the structural responses of civil engineering structures such as bridges, power plants and large facility structures can not be completely measured at all D.O.F.'s. This incomplete measurement problem is one of the major reasons about the difficulty of the inverse problem such as system identification for the safety assessment, particularly in time domain. In this paper, two methods are presented to assess the changes of structural system using the incomplete measurements data in time domain. One of them is model parameter estimation technique to evaluate the model parameter changes in time domain. The other is a substructural identification method for the local damage assessment in interest. Using the subtructural methods, the number of unknown parameters for each identification can be significantly reduced, hence the convergence and accuracy of estimation can be improved. For the local damage assessment, the indirect estimation procedure was also applied to evaluate the damage index. To demonstrate the model parameters estimation technique in time domain, experimental results of 2-bay 3-store frame structure were used. For the verification of substructural identification method and the indirect local damage estimation procedures, several simulation and experimental example analyses were carried out for structural models of a 2-span truss structure and 3-story building model. The results indicate that the present modal parameter estimation technique and substructural identification method including damage estimation methods are effective and efficient for the detection of the modal parameter changes and local damage estimation of complex structures in time domain.