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겔여과크로마토그라피에 의한 질트리코모나스의 항원분획 분석
임미혜,심재찬,민득영,안명희,류재숙,최영길 한양대학교 의과대학 1993 한양의대 학술지 Vol.13 No.1
This study was aimed to analyze the antigenicity of T. vaginalis using a high performance gel filtration chormatography(HPLC), enzyme-linked immunosorbent assay (ELISA) and enzyme-linked immunoelectotransfer blot (EITB). Soluble antigen was prepared using a bead beater. Antiserum was collected from rabbit immunized previously. The results obtained are as follows: the crude antigen of T.vaginalis was separated into 7 peak by HPLC and the fraction 3 revealed the highest reactivity in DLISA. The immunogenic bands of fraction 3 were visualized at 38, 45, 47, 55, 64, 78, 94, 115, 126 and 180 KDa and the bands at 38KDa and 180KDa showed stronger reactivity than that of equivalents of the crude antigen in EITB. In conclusion the fraction 3 of the crude antigen of T. vaginalis obtained by chromatographic separation may have a high antigenicity and proteins ay 38KDa and 180KDa of the fraction 3 may play an important role in antigen-antibody reaction in T. vaginalis infection.
절편모충(Trichomonas vaginalis)에 대한 단일클론항체의 생산과 그 특성
임미혜,류재숙,안명희,최영길,민득영 한양대학교 의과대학 1999 한양의대 학술지 Vol.19 No.1
Trichomonas vaginalis, mucosal protozoan parasite of the urogenital tract, is responsible for the most common clinically recognized sexually transmitted disease. Surface antigen of parasitic protozoa play the important roles in disease pathogenesis by serving as attachment factors, direct virulence factors, or mediating evasion of the host immune response through direct suppressoin or antigenic variation. In this study seven monoclonal antibodies against plasma membrane of T. vaginalis HY-1 were prepared and were investigated the effector function of them. Seven monoclonal antibodies were produced and their isotypes were Ig G1 (Tv1, Tv7), Ig G2a (Tv4), Ig M(Tv2, Tv3, Tv5, Tv6). All of the seven monoclonal antibodies recognized the determinants located on the surface of live organism by IFAT. Although these surface reactive seven monoclonal antibodies agglutinated T. vaginalis trophozoites, especially MAb Tv1 and Tv4 could agglutinate eight isolates of T. vaginalis. In immunoblot assay, MAb Tv1 & Tv4 detected single peptide with molecular weight of 60 kDa, and Tv7 detected 80 kDa. On the other hand Tv2 and Tv6 detected two (40 kDa & 120 kDa) or more peptides (62 kDa, 64 kDa & 120 kDa), and Tv3 and Tv5 did not bind any pepetide. From these results, MAb Tv1 reacted with 60 kDa, major surface membrane protein of T. vaginalis and agglutinated trichomonads.
數 種 韓藥의 아세틸콜린에스터레이즈 酵素活性에 대한 효과
최재환,김미영,김현미,최훈,전훈,김대근,임종필,임강현 대한본초학회 2002 大韓本草學會誌 Vol.17 No.1
아세틸콜린에스터레이즈(AChE)는 신경조직에 분포하는 효소로 신경전달물질 중 아세틸콜린(ACh)을 분해하는 효소로 시냅스 신호전달체계에 있어 중요한 역할을 하는 효소이다. 현재 알츠하이머병과 치매치료에 사용하는 서양약물은 AChE의 활성을 저해하는 작용기전을 가진다. 목적 : 전통적으로 기억력 감퇴, 치매 등 치료에 사용되어 온 한약의 AChE에 대한 작용을 밝히기 위해 본 실험이 구상되었다. 방법 : 생쥐 대뇌신경세포의 균질 혼합액으로부터 효소의 활성을 Ellman 방법을 개선한 엘리자(ELISA)법을 이용하여 측정하였다. 결과 : 실험결과 天花? 의 6종이 2.5㎎/㎖의 농도에서 우수한 효소활성저해력을 보였고, 50% 효소활성 저해농도(ID_50)를 구한 결과, 天花?의 ID_50은 1.5㎎/㎖이었고, ??? 1.2 ㎎/㎖, ?? 2.0 ㎎/㎖, ??草 1.2 ㎎/㎖, ??? 1.0 ㎎/㎖, ??生 1.7㎎/㎖, 및 大?皮 2.0 ㎎/㎖를 나타내어 忍冬?의 저해력이 가장 우수하였다. 결론 : 치매 및 기억력감퇴 증상을 치료하는 한약의 작용기전 중 AChE 효소활성억제효과는 忍冬? 의 6종에서 나타났으며, 이는 전통적인 한방치료에 과학적인 기초자료를 제공할 것으로 생각한다.
AI 조성비 변화에 따른 GaAs/AIGaAs 다중양자우물구조 특성변화 연구
유연희,최정우,임재영,노삼규 慶熙大學校 材料科學技術硏究所 1998 材料科學技術硏究論集 Vol.11 No.-
We manufactured and characterized different sets of GaAs/AlGaAs multiple quantum well structures for the long wavelength infrared photodetection. The samples were grown by MBE. We changed the aluminum composition of barrier region from 0.24 to 0.30 in 0.02 steps, and performed double crystals X-ray diffraction(DCXRD) and the photoluminescence measurements. DCXRD measurements correctly gave the expected aluminum compositions. Photoluminescence measurements revealed that the ground state energy of the well increases with composition as desired, but the change was not very significant.
권장연,임영희,임미혜,류재숙,안명희,민득영 한양대학교 의과대학 1998 한양의대 학술지 Vol.18 No.2
The purification methods such as bead-beater destruction, trichloroacetic acid(TCA) precipitation and 3-[(3-cholamidopropyl) dimethylammonio]-1-propane sulfonate(CHAPS) solubilization of Trichomonas vaginalis antigens on sodium dodecyl sulfate-polyacrylamide gel electrophoresis(SDS-PAGE) and enzyme-linked immunoelectrotransfer blotting (EITB) were evaluated. Total TCA-precipitated proteins and CHAPS-solubilized extract of T. vaginalis possessed common protein bands whose molecular weights were at 28 kDa, 35 kDa, 40 kDa, 50 kDa, 60 kDa, 100 kDa, 120 kDa, 130 kDa, and 160 kDa, and bead-beater treated trichomonal proteins represented some different spectrum of protein bands from TCA- or CHAPS-treated ones in that they didn't show high M.W. protein bands(〉100 kDa) on SDS-PAGE. But similar antigenic bands with the molecular weights of 60 kDa, 110 kDa, 120 kDa and 140 kDa by EITB were identified in TCA-, CHAPS- and bead-beater treated proteins. In conclusion, TCA-precipitation and CHAPS-solubilization were more stable methods to analyse trichomonal proteins than extraction with bead-beater, and the result will be useful for antigen analysis of Trichomonas vaginalis to elucidate a mechanism of pathogenesis in host-parasite relationship.
A Case of Occupational Hypersensitivity Pneumonitis Associated with Trichloroethylene
Jae, Young,Hwang, Eu Dong,Leem, Ah Young,Kang, Beo Deul,Chang, Soo Yun,Kim, Ho Keun,Park, In Kyu,Kim, Song Yee,Kim, Eun Young,Jung, Ji Ye,Kang, Young Ae,Park, Moo Suk,Kim, Young Sam,Kim, Se Kyu,Chang, The Korean Academy of Tuberculosis and Respiratory 2014 Tuberculosis and Respiratory Diseases Vol.76 No.2
Trichloroethylene (TCE) is a toxic chemical commonly used as a degreasing agent, and it is usually found in a colorless or blue liquid form. TCE has a sweet, chloroform-like odor, and this volatile chlorinated organic chemical can cause toxic hepatitis, neurophysiological disorders, skin disorders, and hypersensitivity syndromes. However, the hypersensitivity pneumonitis (HP) attributed to TCE has rarely been reported. We hereby describe a case of HP associated with TCE in a 29-year-old man who was employed as a lead welder at a computer repair center. He was installing the capacitors on computer chip boards and had been wiped down with TCE. He was admitted to our hospital with complaints of dry coughs, night sweats, and weight losses for the past two months. HP due to TCE exposure was being suspected due to his occupational history, and the results of a video-associated thoracoscopic biopsy confirmed the suspicions. Symptoms have resolved after the steroid pulse therapy and his occupational change. TCE should be taken into consideration as a potential trigger of HP. Early recognition and avoidance of the TCE exposure in the future is important for the treatment of TCE induced HP.
Normal-Incidence Far-Infrared Absorption of Five-Period InAs/GaAs Quantum Dots at Room Temperature
Jae young LEEM 한국물리학회 2002 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.40 No.1
We report a normal-incidence far-infrared absorption above 10 m of self-assembled InAs quantum dots (QDs) grown by molecular beam epitaxy. The InAs QD layers are embedded in a GaAs matrix with Si -doping. The absorption spectrum in the far-infrared range observed at room temperature is attributed to the intersublevel transitions of the InAs QD layer above 10 m. A Si -doped InAs QD sample with a ve-period vertically stacked structure shows a photoluminescence spectrum at room temperature, attesting to the high quality of the InAs QDs. This result agrees with the strong normal-incidence far-infrared absorption observed in ve-period InAs QD layers with Si -doping by using Fourier transform infrared spectroscopy at room temperature.
Zn(S, Se) EPITAXIAL LAYERS GROWN ON GaAs(100) BY MOLECULAR BEAM EPITAXY
Leem, Jae-Young,Son, Jeong-Sik,Bae, In-Ho,Noh, Sam-Kyu,Shin, Eun-Joo,Kim, Dong-Ho,Park, Hae-Sung,Kim, Tae-Il 한국재료학회 1995 Fabrication and Characterization of Advanced Mater Vol.2 No.e4
ZnSe and ZnSSe epitiaxial layers were grown on GaAS(100) substrate under Se-rich conditions at a substrate temperature of $300^{\circ}C$ by molecular beam epitaxy. We have investigated the heterostructures of Zn(S, Se)/GaAs by Raman spectroscopy. In these layers, GaAs-LO, ZeSe-LO, ZnS-LO, ZmSe-TO, and phonon-plasmon coupled modes were observed. To investigate crystal quality with in-depth, a slope beveled structure was obtained from ZnSe/GaAs by mechanical angle lapping.
Case Report : A Case of Occupational Hypersensitivity Pneumonitis Associated with Trichloroethylene
( Young Jae Kim ),( Eu Dong Hwang ),( Ah Young Leem ),( Beo Deul Kang ),( Soo Yun Chang ),( Ho Keun Kim ),( In Kyu Park ),( Song Yee Kim ),( Eun Young Kim ),( Ji Ye Jung ),( Young Ae Kang ),( Moo Suk 대한결핵 및 호흡기학회 2014 Tuberculosis and Respiratory Diseases Vol.76 No.2
Trichloroethylene (TCE) is a toxic chemical commonly used as a degreasing agent, and it is usually found in a colorless or blue liquid form. TCE has a sweet, chloroform-like odor, and this volatile chlorinated organic chemical can cause toxic hepatitis, neurophysiological disorders, skin disorders, and hypersensitivity syndromes. However, the hypersensitivity pneumonitis (HP) attributed to TCE has rarely been reported. We hereby describe a case of HP associated with TCE in a 29-year-old man who was employed as a lead welder at a computer repair center. He was installing the capacitors on computer chip boards and had been wiped down with TCE. He was admitted to our hospital with complaints of dry coughs, night sweats, and weight losses for the past two months. HP due to TCE exposure was being suspected due to his occupational history, and the results of a video-associated thoracoscopic biopsy confirmed the suspicions. Symptoms have resolved after the steroid pulse therapy and his occupational change. TCE should be taken into consideration as a potential trigger of HP. Early recognition and avoidance of the TCE exposure in the future is important for the treatment of TCE induced HP.