• 한국응용약물학회:학술대회논문집
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• 한국응용약물학회 1995년도 춘계학술대회
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• pp.62-62
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• 1995

한국산 천연자원중 한방이나 민간요법에서 항종양제로 빈번히 사용되어온 생약들 중에서 103종을 선정하여 이들 성분들을 추출하고 시험관내에서 항종양성이 우수하고 정상세포에 손상을 적게 주는 생약 6종을 선별하여 암세포주에 대한 독성능 (in vitro)과 항종양성 면역감시기구(in vivo)및 LD$_{50}$등을 측정하여 항종양제로의 신약개발을 목적으로 수행하였다. 방법: 선별된 6종의 생약유효성분을 METHANOL로 추출하여 조추출물을 얻었으며 이물질들을 순차적으로 각각의 유기용매로 추출, column chromatography법으로 분획하였으며 분획분에 대한 암세포독성능은 MTT colorimetric 검정법을 이용하여 IC$_{50}$값을 구하였다. 면역감시기구 측정방범으로는 Balb/c mouae암,수 각 10수씩에 P388암세포주를 접종한군과 접종하지 않은 실험군에 생약추출분획물 8.6mg/0.2ml씩 20일간 매일 경구 투여시키고 대조군에는 생리식염수 0.2ml씩을 매일 경구 투여시켜 NK cell의 활성 MIF Recombinant IL-2로 유도시킨 NK cell활성능, chemotaxis등을 측정하였다. 생체내 항종양능 시험은 tumor panel system에 따라 mouse leukemia cell을 사용하여 측정하였다. 각분획성분의 투여용량은 실험동물에서 독성실험결과로 LD$_{50}$량을 구해 항암효과 평가시에 Maximum dose로 하였고 최고용량을 기준으로 일정한 공비를 적응하여 3단계의 투여량을 설정하였다. (중략)

• 오토저널
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• 제14권1호
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• pp.25-37
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• 1992

Interior noise in a car is known to have an important influence on product acceptability. This noise is closely correlated with structural-acoustic vibration. When considering noise problem, the structural-acoustic relation of a vehicle cabin model needs to be identified. However, it is very difficult to get the modal parameters of this kind of cabin structure composed of thin plates: because it not only can be excited by the acoustic vibration of cavity, but also tends to have decoupling effects of one plate from another. In order to obtain modal parameters more precisely, various excitation techniques, i.e. impact, pure random, burst random, and swept sine testing are applied for the first step. In the case of the cabin model, impact and swept sine testing show good results. Next, the determination of the excitation point by trial- and-error and the accurate measurements of FRF's are performed with these methods. The modal parameter extraction is carried out for the final step. This paper proposes a new approach to find the modal parameters more reliably in the case of high decoupling effects. That is, the convergence of MIF and MCF in each panel, which provide some criteria for the validity of the obtained modal parameters, is observed. And from those results, the pretty accurate modal parameters can be determined. A comparative assessment between the modal testing and the FEM is also performed.

• 약학회지
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• 제55권3호
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• pp.203-212
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• 2011

Adipocytes have been known to secrete a number of important proteins called adipokines with roles in energy metabolism, reproduction, cardiovascular function and immunity. In this study we have attempted to identify intensively secretory proteins from 3T3-L1 adipocytes. 3T3-L1 preadipocytes were differentiated into mature adipocytes and then the cells were left in serum-free medium. The supernatant was filtrated and dialyzed. Lyophilized secretome was fractionated by two different methods, 1-D SDS PAGE and RP-FPLC. The tryptic peptides from the gel slices and the FPLC fractions were analyzed by nanoLC/ESI-MS/MS. We identified a total of 303 identical proteins from two methods, 251 proteins from 1-D gel and 184 proteins from RP-FPLC. 86 of them were listed as a secretory protein Finally, we identified many known or unknown secreted proteins existed in the low level including adiponectin, angiotensinogen, bone morphogenetic protein-1 (BMP-1), macrophage migration inhibitory factor (MIF), insulin like growth factor-II (IGF-II), interleukin-6 (IL-6), follistatin-related protein-1, minecan, and resistin. The existence of some of secreted proteins has been confirmed in RNA level. This proteomic experiment is useful for the intensive screening of secretory proteins in many kinds of other cells.

• Elastomers and Composites
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• 제51권1호
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• pp.24-30
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• 2016

Sole in the footwear usually modified with foaming agent on the polymer resin to improve the lightweightness and crush-cushion effect. In this study, we investigated rheological properties for polymer resin filled with the different type and concentration of foaming agent, capsule type foaming agent and organo-chemical foaming agent, under the time sweep test. Curing times of each polymer resin with different kind of foaming agent are delayed than reference material (epoxy resin with curing agent). In case of adding capsule type foaming agent, however, there is appropriate concentration to reduce the curing time, relatively. When foaming agent is activated, foaming force inflates the sample in contrast to condensation force of curing and then axial normal force develop to the (+) direction. Interestingly, by increase concentration of foaming agent, there is a specific point to break down the axial normal force development. The reason for this phenomenon is that coalescence of foams induce the blocking of axial normal force development.

• Tuberculosis and Respiratory Diseases
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• 제44권4호
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• pp.853-860
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• 1997

연구배경 : 만성 기침은 임상에서 흔한 증상으로 대부분은 후비루증(posterior nasal dripping : PND), 천식, 위식도 역류증, 기관지염 등으로 인한 것으로 알려져 있다. 만성 기침 환자 중 일부분은 기침과 동반하여 천명이나, 호흡곤란 등과 같은 기관지 천식과 유사한 증상을 경우가 많아 기관지 과민반응 검사를 시행하게 된다. 기관지 과민반응 검사는 대부분 $FEV_1$을 측정하지만 흉곽외 기도의 과민반응은 측정하지 못하는 단점이 있다. 본 연구는 만성 기침 환자를 대상으로 기관지와 흉부외 기도의 methacholine 유발 검사를 시행하여 기도 과민 반응을 평가하여 상관 관계를 알아보고자 본 연구를 시행하였다. 대상 및 방법 : 대상 환자는 2개월 이상 기침이 있는 111명의 환자를 대상으로 하였으며, 남자 55명, 여자 56명으로 평균 연령은 $37.4{\pm}13.0$세였다. 대상 환자는 심혈관 질환, 전신 질환 등이 없었으며, 과거에 기관지 진단 받은 병력이 없고 기관지 확장제나 사용한 병력이 없었던 환자였다. 기침이나 천명 또는 간헐적인 호흡곤란 등의 증상은 문진으로 확인하였고, 기침만 존재한 환자 46명, 기침과 천명이 있는 환자 24명, 기침과 호흡곤란이 있는 환자 22명, 기침, 천명 및 호흡곤란이 있는 환자 19명이었다. 대상환자의 폐기능검사는 $FEV_1$(%) $106.5{\pm}15.3$, FVC(%) $100.1{\pm}12.8$, $FEV_1$/FVC(%) $106.3{\pm}13.1$로 정상이었다. Methacholine 유발검사는 0.0625 에서 25 mg/ml의 2배수 농도를 흡입한 5분후 기관지 과민 반응은 $PC_{20}FEV_1$으로 측정하였고, 흉곽외 기도 과민 반응은 최대 중간흡입 기류속도인 $MIF_{50}$으로 측정하여 연속 3회 감소하고 25%이상 감소한 $PC_{25}MIF_{50}$으로 측정하여 25mg/ml 이하의 농도에서 양성인 경우를 기관지(BHR) 및 흉부외 기도(EAHR) 에 각각 반응이 있다고 판독하여 대상 환자의 상관 관계를 확인하여 다음과 같은 결과를 얻었다. 결 과 : 대상 환자 총 111명중에 기관지 과민반응(BHR)이 27명, 흉곽외 기도 과민반응(EAHR)이 16명, BHR과 EAHR이 함께 있는 환자 8명으로 과민 반응이 있는 환자는 총 50명이었으며, 그외의 61명은 기관지와 흉부외 기도의 과민반응이 없었다. BHR 또는 EAHR이 양성인 환자 50명중에 기침만 있는 환자는 BHR이 3명, EAHR이 9명, BER과 EAHR이 같이 있는 환자는 2명으로 EAHR이 가장 많았으며, 기침과 천명이 있는 환자는 BHR이 10명, EAHR이 2명 및 BHR과 EAHR이 같이 있는 환자는 2명으로 BHR이 가장 많았고, 기침과 호흡곤란이 있는 환자는 BHR이 7명, EAHR이 3명, BHR과 EAHR이 같이 있는 환자는 1명으로 BHR이 가장 많았다. 기침, 천명 및 호흡곤란이 모두 있는 환자는 BHR이 7명, EAHR이 2명, BHR과 EAHR이 같이 있는 환자는 3명으로 BHR이 가장 많았다. BHR와 EAHR이 모두 음성인 환자는 총 61명이었으며, 기침만 있는 환장 32명, 기침과 천명이 있는 환자 10명, 기침과 호흡곤란이 있는 환자 11명, 기침, 천명 및 호흡곤란이 모 두 있는 환자는 7명이었다. 결 론 : Methacholine에 양성 반응인 환자중 호흡곤란이나 천명이 동반된 만성 기침환자에서는 주로 기관지 과민 반응이 나타났으며, 기침 단독 증상인 환자에서는 반응이 존재함을 알 수 있었다.

• 대한한방종양학회지
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• 제3권1호
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• pp.67-84
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• 1997

Bujeonghangamtang(扶正抗癌湯) has been used for cure of tumor as a traditional medicine without any experimental evidence to support the rational basis for its clinical use. This study was carried out to evaluate the possible therapeutic or antitumoral effects of Bujeonghangamtang extract against tumor, and to carry out some mechanisms responsible for its effect. Some kinds of tumor were induced by the typical application of 3-methylcholanthrene. (MCA) or by the implantation(s.c) of malignant tumor cells such as leukemia cells(3LL cells) or sarcoma cells(Sl80 cells). Treatment of the Bujeonghangamtang water-extract (dailly 1mg／mouse, i. p.) was continued for 7 days prior to tumor induction and after that the treatment was lasted for 20 days. Against squamous cell carcinoma induced by MCA, Bujeonghangamtang decreased not only the frequency of tumor production but also the number and the weight of tumors per tumor bearing mice (TBM). Bujeonghangamtang also significantly suppressed the development of 3LL cell and S180 cell-implanted tumors in occurrence-frequency and their size, and some developed tumors were regressed by the continuous treatment of Bujeonghangamtang extract into TBM. In vitro, treatment of Bujeonghangamtang extract had no effect on the growth of some kinds of cell line such as FsaII, A431 strain but significantly inhibited the proliferation of 3LL, S180 cells and augmented the DNA synthesis of mitogen-activated lymphocytes. Bujeonghangamtang also stimulated the migrative ability of leukocyte, the MIF and IL-2 production of T lymphocytes, but not IL 6 production of B cells. Bujeonghangamtang-administration to mice enhanced NK cells activities. These results demonstrated that Bujeonghangamtang extract exhibited a significant prophylactic benefits against tumors and its antitumor activity was manifested depending on the type of tumor cells. And these results also suggested that effect of Bujeonghangamtang might be chiefly due to nonspecific enhancement of NK cell activities and cell-mediated immune responses.

• BMB Reports
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• 제46권2호
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• pp.124-129
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• 2013

FK506 binding protein 12 (FK506BP) belongs to a family of immunophilins, and is involved in multiple biological processes. However, the function of FK506BP in corneal disease remains unclear. In this study, we examined the protective effects on dry eye disease in a Botulinum toxin A (BTX-A) induced mouse model, using a cell-permeable PEP-1-FK506BP protein. PEP-1-FK506BP efficiently transduced into human corneal epithelial cells in a time- and dose-dependent manner, and remained stable in the cells for 48 h. In addition, we demonstrated that topical application of PEP-1-FK506BP was transduced into mouse cornea and conjunctiva by immunohistochemistry. Furthermore, topical application of PEP-1-FK506BP to BTX-A-induced mouse model markedly inhibited expression levels of pro-inflammatory cytokines such as interleukin-$1{\beta}$ (IL-$1{\beta}$), tumor necrosis factor-${\alpha}$ (TNF-${\alpha}$) and macrophage inhibitory factor (MIF) in corneal and conjunctival epithelium. These results suggest PEP-1-FK506BP as a potential therapeutic agent for dry eye diseases.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2002년도 춘계학술대회논문집
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• pp.441-447
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• 2002

KSR-III(Korea Sounding Rocket - III), which is being developed by Space Technology R&D Division of KARI(Korea Aerospace Research Institute) will be launched in late 2002. It is a three-stage, liquid propellant rocket which can reach 250 km altitude and will carry out observation of ozone layer and scientific experiments, such as microgravity experiment, and atmospheric measurement. KSR-III is believed to be an intermediate to the launch vehicle capable of carrying a satellite to its orbit. Space Test Department of KARI performed GVT(Ground Vibration Test) fer KSR-III EM at Rocket Test Building of KARI. GVT is very important for predicting the behavior of rocket in its operation, developing flight control program and performing aerodynamic analysis. This paper gives an introduction of rocket GVT configuration and information on test procedures, techniques and results of It. In this test. to simulate free-free condition, test object hung in the air laterally by 4 bungee cords specially devised. For the excitation of test object, pure random signal by two electromagnetic shakers was used and total 22 frequency response functions were achieved. Polyreference parameter estimation was performed to identify the modal parameters with MIMO(Multi-Input-Multi-Output) method. As the result of the test, low frequency mode shapes and modal parameters below 60Hz were identified

• 대한한의학방제학회지
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• 제5권1호
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• pp.147-168
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• 1997

Tish study was carried out to evaluate the possible therapeutic or antitumoral effects of Takrisodokyeum extract against tumor, and immunomodulatory effect. Some kinds of tumor were induced by the typical application of 3-methylcholanthrene (MCA) or by the implantation(s.c) of malignant tumor cells such as leukemia cells(3LL cells) or sarcoma cells(S-I80 and Fas II cells). Treatment of the Takrisodokyeum water-extract(daily 1mg mouse, i.p.) was continued for 7 days prior to tumor induction and after that the treatment was lasted for 15 days. Against squamous cell carcinoma induced by MCA, Takrisodokyeum decreased not only the frequency of tumor production but also the number and the weight of tumors per tumor bearing mice (TBM). Takrisodokyeum also significantly suppressed the development of 3LLcell and S-180 cell by frequency and their size, and some developed tumors were regressed by the continuous treatment of Takrisodokyeum extract into TBM. However, when tumor was induced by FsaII cell-implantation, the growth of implanted cells in mice was delayed by the water extract of Takrisodokyeum until day 7 and then rapid growth ensued. In vitro, treatment of Takrisodokyeum extract had no effect on the growth of some kind of cell lines such as FsaII, A-131 strain but significantly inhibited the proliferation of 3LL, S-180 cells. Takrisodokyeum also stimulated the migrative ability of leucocyte, the MIF and IL 2-production of T lymphocytes, but not IL 6 production of B cells. Takrisodokyeum enhanced Arthus reaction and DTH to sheep erythrocytes, and NK cells activities. These results demonstrated that Takrisodokyeum extract different results according to the type of tumor cells. And these results also suggested that antitumor effect of Takrisodokyeum might be chiefly due to nonspecific enhancement of NK cell activities and cell-mediated immune responses.

• The Korean Journal of Physiology and Pharmacology
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• 제27권3호
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• pp.241-256
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• 2023

Although chimeric antigen receptor T cell (CAR-T) is a promising immunotherapy in hematological malignancies, there remain many obstacles to CART cell therapy for solid tumors. Identifying appropriate tumor-associated antigens (TAAs) is especially critical for success. Using a bioinformatics approach, we identified common potential TAAs for CAR-T cell immunotherapy in solid tumors. We used the GEO database as a training dataset to find differentially expressed genes (DEGs) and verified candidates using the TCGA database, obtaining seven common DEGs (HM13, SDC1, MST1R, HMMR, MIF, CD24, and PDIA4). Then, we used MERAV to analyze the expression of six genes in normal tissues to determine the ideal target genes. Finally, we analyzed tumor microenvironment factors. The results of major microenvironment factor analyses showed that MDSCs, CXCL1, CXCL12, CXCL5, CCL2, CCL5, TGF- β, CTLA-4, and IFN-γ were significantly overexpressed in breast cancer. The expression of MST1R was positively correlated with TGF- β, CTLA-4, and IFN-γ. In lung adenocarcinoma, MDSCs, Tregs, CXCL12, CXCL5, CCL2, PD-L1, CTLA-4, and IFN-γ were significantly overexpressed in tumor tissues. The expression of MST1R was positively correlated with TGF- β, CTLA-4, and IFN-γ. In bladder cancer, CXCL12, CCL2, and CXCL5 were significantly overexpressed in tumor tissues. MST1R expression was positively correlated with TGF- β. Our results demonstrate that MST1R has the potential as a new target antigen for treating breast cancer, lung adenocarcinoma, and bladder cancer and may be used as a progression indicator for bladder cancer.