연구논문 : 만성 바이러스간질환에서 간섬유화의 다양한 비침습 혈청표지자검사의 비교

김선민 ( Sun Min Kim ),손주현 ( Joo Hyun Sohn ),김태엽 ( Tae Yeob Kim ),노영욱 ( Young Wook Roh ),은창수 ( Chang Soo Eun ),전용철 ( Yong Cheol Jeon ),한동수 ( Dong Soo Han ),오영하 ( Young Ha Oh ) 대한간학회 2009 Clinical and Molecular Hepatology(대한간학회지) Vol.15 No.4

목적: 만성 바이러스간질환에서 병의 경과와 예후를 평가하고 치료반응을 예측함에 있어 간섬유화의 진단은 중요하다. 최근 간섬유화 평가에 표준방법이지만 침습적 간생검을 대신하여 여러 가지 비침습적 진단법이 이용되고 있고, 또한 새로운 검사법들이 개발되고 있다. 저자들은 만성 B형 및 C형간염 환자를 대상으로 임상에서 광범위하게 흔히 시행하는 혈액검사와 임상 소견을 이용한 아래와 같은 진단법들만으로 간섬유화를 얼마나 정확하게 평가할 수 있는지 알아보고, 단일 검사로 간섬유화를 평가하는 데 유용하다고 알려져 있는 hyaluronic acid(HA)와 IV형 콜라겐 농도와 비교하여 그 임상적 유용성을 평가하였다. 대상과 방법: 2002년 3월부터 2007년 2월까지 만성 바이러스간 질환으로 간생검을 시행받은 225명의 환자(HBV 180명, HCV 43명, HBV+HCV 2명)를 대상으로 분석하였다. 간생검을 시행하는 날에 말초혈액검사, 혈액응고검사, 혈청생화학검사를 시행하고, 혈중 HA, IV형 콜라겐 농도를 측정하였다. 간섬유화의 정도는 F0(섬유화가 없음), F1(문맥역 섬유화), F2(문맥주변부 섬유화), F3(섬유성 격막) 및 F4(간경변증)의 4단계로 구분하였다. 대상 환자를 F0-1, F2-4 혹은 F0-2, F3-4의 두 집단으로 분류하여 두 집단을 구분하고자 할 때 AAR(AST/ALT ratio), API(age-platelet index), APRI(AST to platelet index), CDS(cirrhosis discriminant score), platelet count, HA, IV형 콜라겐의 예측능을 area under the receiver operating characteristic curve (AUROC)값을 이용하여 비교하였다. 결과: 대상환자의 섬유화의 단계는 F0 집단은 17명, F1 집단은 40명, F2 집단은 61명, F3 집단은 74명, F4 집단은 33명이었다. 의미 있는 간섬유화를 F2 이상으로 판단할 때, 의미 있는 섬유화의 예측에 대한 AUROC 값은 APRI=0.822, CDS=0.776, platelet count=0.773, API=0.756, HA=0.749, IV형 콜라겐=0.718, AAR=0.642 순이었고, F3 이상의 광범위한 섬유화 예측에 대한 AUROC값은 CDS=0.835, platelet count=0.795, API=0.794, HA=0.766, AAR=0.711, IV형 콜라겐=0.697, APRI=0.691 순으로 관찰되었다. 결론: 만성 바이러스간질환에서 간섬유화를 평가하는 데 임상 소견 및 혈액검사를 이용한 방법들이 비침습적 진단법 중 단독 검사로도 유용한 것으로 알려져 있는 혈중 HA와 IV형 콜라겐 농도와 비교하여 우월하거나 대등하였다. 특히 APRI는 다른 인자들에 비해 F2 이상의 의미 있는 섬유화를 예측하는 데 가장 유용하였고, CDS는 F3 이상의 광범위한 섬유화를 예측하는 데 가장 유용하였다. Background/Aims: The aim of this study was to determine the clinical performances of noninvasive serum markers for the prediction of liver fibrosis in chronic viral liver diseases. Methods: We analyzed a total of 225 patients with chronic viral liver diseases (180 with hepatitis B virus, 43 with hepatitis C virus, and 2 with hepatitis B+C virus) who underwent a liver biopsy procedure at the Hanyang University Guri Hospital between March 2002 and February 2007. Serum was also obtained at the time of liver biopsy. Liver fibrosis was staged according to the scoring system proposed by the Korean Study Group for the Pathology of Digestive Diseases. Various noninvasive serum markers were evaluated, including the aspartate aminotransferase (AST)/alanine aminotransferase (ALT) ratio (AAR), age-platelet (AP) index, AST/platelet ratio index (APRI), cirrhosis discriminant score (CDS), platelet count, hyaluronic acid (HA), and type IV collagen. Results: There were 17, 40, 61, 74, and 33 patients at stages F0, F1, F2, F3, and F4, respectively. The overall diagnostic accuracies of each marker, as determined by the area under receiver operating characteristics curves, were APRI=0.822, CDS=0.776, platelet count=0.773, AP index=0.756, HA=0.749, type IV collagen=0.718, and AAR=0.642 for predicting significant fibrosis (≥F2); and CDS=0.835, platelet count=0.795, AP index=0.794, HA=0.766, AAR=0.711, type IV collagen=0.697, and APRI=0.691 for predicting extensive fibrosis (≥F3). Conclusions: Conclusions: All noninvasive serum markers evaluated in this study were useful for predicting significant or extensive liver fibrosis in chronic viral liver diseases. In particular, APRI was most useful for the prediction of significant fibrosis, and CDS was most useful for the prediction of extensive fibrosis. (Korean J Hepatol 2009;15:454-463)

동국대학경주병원에서 분리된 각종 병원성 세균 및 항생제 감수성 양상

하경임,고은하,전창호,정병욱,안우섭,김우택,배정수,어경윤 동국대학교 경주대학 1993 東國論集 Vol.12 No.-

We investigated characteristics of bacterial infection and antimicrobial suscerptibility patterns of clinical specimens in Dong Guk University Kyong Ju Hospital from october 1991 to december 1992. The types of clinical specimens requested for culture were as follows ; pus(34.2%), urine(29.6%), sputum(25.2%), blood(9.2%), etc. The most frequently isolated organisms were E. coli(17.6%), Pseudomonas(12.7%), S. aureus(12.2%), and CNS(11.2%), orderly. Predominant organisms from pus, urine and sputum were S.aureus, E. coli and Pseudomonas. Blood culture was requested 1,244 samples from 614 patients, 91 pathogeni organisms were isolated(14.8% from patient and 7.3% from requested clinical samples). E. coli was most frequently isolated(29.7%) and Salmonella typhi was noted 8.8% from the requested samples. The patterns of isolated organisms according to departments were as follows ; E.coli and Klebsiella were frequently isolated in internal medicine and general surgery, E.coli and Pseudomas in Neurosurgery, S. aureus and Pseudomonas in orthopedic surgery. In ICU, Pseudomonas was predominatly isolated and the rate of mixed infection was also high(16.4%). Most of gram-negative bacilli revealed relatively high susceptibility to Chlorampenicol, Amikacin, Tobramycin and Carbenicillin, but Acinetobacter were only susceptible to Carbenicillin and Tetrecyclin, and Serratia were to Carbenicillin and Amikacin while Salmonella were susceptible to all tested first drugs. The proportions of multi-drug resistant bacteria were 34.9% of Acinetobacter, 21.1% of Serratia, 20.0% of Pseudomonas and 15.4% of Citrobacter but Aztreonam was highly susceptible(84∼100%) except Acinetobacter. S. aureus and CNS were susceptible to Chlorampenicol, Oxacillin, Cephalothin and Vancomycin, especially, 100% susceptible to Vancomycin. But Methicillin reistant Staphylococcus aureus were very high(49%) inspite of new constructed hospital. Pneumococcus and Streptococcus species were relatively high susceptible to all tested drugs.

위장관 암환자들에서 관찰한 혈중 총항산화능(Total Antioxidant Capacity)의 변화

전창호,이은하,이한일 대한임상병리학회 1998 대한임상병리학회지 Vol.18 No.2

n-CdS_(0.46)Se_(0.54)/p-Cu_92-x)S_(0.46)Se_(0.54) 이종접합 태양전지의 제작과 그 특성에 관한 연구

유상하,최승평,이상열,홍광준,서상석,김혜숙,전승룡,윤은희,문종대,신영진,정태수,신현길,김택성,유기수 全北大學校 基礎科學硏究所 1994 基礎科學 Vol.16 No.-

승화방법에 의해 CdS_0.46Se_0.54 단결정을 성장하여 결정구조를 조사하고, Van der Pauw 방법으로 Hall effect를 측정하여 carrier density의 온도 의존성과 mobility의 온도 의존성을 조사하였다. 성장된 CdS_0.46Se_0.54 단결정을 치환반응하여 n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 이종접합 태양전지를 제작하였다. Spectral response, 전류-전압특성 및 전력변환 효율을 조사하여 그 결과로부터 개방전압은 0.48V, 단락 전류 밀도는 21mA/㎠, fill factor와 전력변환효율은 각각 0.75와 9.5%를 얻었다. CdS_0.46Se_0.54 single crystal was grown by a sublimation method. The crystal structure and the temperature dependence of carrier density and mobility of CdS_0.46Se_0.54 single crystal were studied. Heterojunction solar cells on n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 were fabricated by the substitution reaction. The spectral response, the J-U characteristics and the conversion efficiency of the n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 heterojunction solar cells were studied. The open-cricuit voltage, short-circuit density, fill factor and conversion efficiency of n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 heterojunction solar cells under 80mW/㎠ illumination were found to be 0.48V, 21mA/㎠, 0.75 and 9.5%, respectively.

C.V.D. 방법에 의한 Cd_0.78Zn_0.22 S박막 성장과 광전기적 특성연구

유상하,이상렬,홍광준,서상석,김혜숙,전승룡,윤은희,문종대 조선대학교 기초과학연구소 1993 自然科學硏究 Vol.16 No.1

We had grown Cd_0.78Zn_0.22S polycrystal thin films on slide substrate using chemical vapour deposition(CVD) method. We measured X-ray diffraction patterns in order to study Cd_0.78Zn_0.22S polycrystal structure. We studied its band gap using transmission curves and photocurrent and also analyzed photoluminescence using configurational coordinate model. We measured Hall effect·on this sample by Van der Pauw method and studied on carrier density and mobility depending on temperature.

자동화학 분석기 ISP-1000의 평가 Ⅱ

김문연,고은하,하경임,김지용,전창호 동국대학교 경주대학 1996 東國論集 Vol.15 No.-

검사방법의 평가로서 자동화기기에 대한 적절한 평가는 특히 수입에 전적으로 의존하는 국내여건을 생각할때 중요한 과제이다. ISP-1000은 대용량, 다항목의 선택적 생화학 자동 분석기로 국내에서는 거의 채택된 경험이 없는 기기로서 효율적인 선정을 하기위하여 4가지 화학검사에 대한 평가를 하였다. 시판되는 대조물질 Level Ⅰ,Ⅱ로 검사내 정밀도, 검사일간 정밀도, 직선성을 구하였으며 100명의 환자검체로는 Cobas Mira와의 상관성을 구하였다. 검사내 정밀도는 Level Ⅰ대조물질에서는 변이계수가 4.31-8.73%, Level Ⅱ 대조물질에서의 변이계수는 1.32-8.22%이었으며, 검사일간 정밀도는 Level Ⅰ 대조물질로 얻은 변이계수는 6.29-8.974%, Level Ⅱ 대조물질로 검사한 경우는 5.78-8.22%이었다. 직선성의 평가에서는 0.9917-0.9998의 우수한 직선성을 보여주었고(P<0.01), Cobas Mira에 대한 상관관계는 0.8427-0.9857의 범위에 있었다(P<0.01). 결론적으로 ISP-1000에 대한 4가지 화학검사의 평가에 있어서 검사중 정밀도, 검사일간 정밀도, 직선성은 우수하였으며, 상관관계는 만족할만하였으나 더 좋은 결과를 얻기위하여 parameter등에 대한 재검토가 필요한 것으로 생각되었다. It is an important task to evaluate autochemical analyzers as one of the labortory method evaluations, especially considering of the domestic environments almost depending on the import. By analyzing 4 chemical tests, we evaluated the high throughoutput, multichannel, selective and rarely adopted chemical autoanalyzer ISP-1000. We analyzed within run precision, between day precision, lineality with the commercial control materials, and correlation with 100 patients samples. In within run precision, CVs were ranged from 4.31~8.73% in Level I control material, l.32-8.22% in Level Ⅱ control material. In between day precision, CVs were ranged from 6.29-8.974% in Level I control material, 5.78-8.22% in Level Ⅱ control material. The lineality was excellent(r²>O,9917, p<O.Ol). The correlation coefficients between ISP-l000 and Cobas Mira were ranged from 0.8247∼0.9857%(P<O.0l). In conclusion, 4 chemical tests of ISP-l000 were acceptable in within run precision, between day precision and lineality, and correlation with Cobas Mira was good but adjusting the parameters would be necessary for the better results.

우리나라 파프리카 수출단지 및 선과장의 병해충 조사

김기돈,이시원,강은하,신용길,전재용,허노열,이흥식 충남대학교 농업과학연구소 2013 농업과학연구 Vol.40 No.2

The disease and insect were surveyed locally in greenhouse, fruit packing house and store house of 51 farms in 13 towns having purpose of paprika exportation. By analysis, various disease and insect were not only founded locally but more ones detected in farms having old facilities and no natural enemy. We found 15 pathogens such as Fusarium spp., Alternaria solani, Leveilluila taurica, PepMV (Pepino mosaic virus) and TMV (Tobacco mosaic virus) in greenhouse, Fusarium spp. in fruit packing house and Penicillium spp. in store house. We found 15 insects in greenhouse such as Bemisia tabaci, rialeurodes vaporariorum and Myzus persicae in greenhouse, Hylobitelus haroldi in fruit packing house. However, the problem quarantine disease and insect for importation and exportation were not detected in inspection time.

The side effects and the cause of discontinuation of postoperative oral hormonal treatment in patients with surgically confirmed endometriosis

( Ha Eun Jeong ),( In Hye Kim ),( Eun Hye Jeon ),( Hye Kyung Noh ),( Jong Kil Joo ) 대한산부인과학회 2020 대한산부인과학회 학술대회 Vol.106 No.-

Objective: To evaluate the side effect and cause of discontinuation of combined oral contraceptives or dienogest for 12 months or more to prevent endometriosis recurrence in patients with surgically confirmed endometriosis. Methods: We retrospectively analyzed the medical records of 213 women with endometriosis who had been treated with combined oral contraceptives (ethinyl estradiol 0.02mg/drospirenone 3 mg, EE/DRSP) or 2 mg of dienogest (DNG) once a day for 12 months or more at a single institute. Side effects appealed by patients, laboratory parameters, causes of discontinuation of medication and recurrence rate were evaluated at 1, 2, 3, 4 and 5 year after medication start (Y1, Y2, Y3, Y4 and Y5). Results: EE/DRSP were administered to 59 patients and DNG were administered to 154 patients. Mean duration of postoperative use of EE/DRSP and DNG was 44.5±22.6 month and 23.6±13.5 month, respectively. The number of patients was 59, 58, 50, 38 and 27 in EE/DRSP group and 154, 121, 50, 26 and 12 in DNG group at Y1, Y2, Y3, Y4 and Y5 respectively. The prevalence of side effects was 27.1%, 19.0%, 10.0%, 10.5% and 7.4% in EE/DRSP group and 29.2%, 15.7%, 14.0%, 23.1% and 0.0% in DNG group at Y1 to Y5. The discontinuation rate was 1.7%, 1.7%, 4.0%, 0.0% and 7.4% in EE/DRSP group and 10.4%, 3.3%, 4.0%, 3.8% and 0.0% in DNG group. The recurrence rate was less than 4% in both groups. Conclusion: The side effects were relatively affordable, and occurrence of side effects tended to be decreased with continuous administration. The long-term administration of EE/DRSP or DNG seem to be highly effective in preventing recurrence after surgery.

Structural Biology and Drug Targeting (Structural Basis of Protein Function and Regulation) : Production of active carboxypeptidase B in E. coli cytoplasm using PDI as a fusion partner

( Eun Jeong Kim ),( Eun Jin Ha ),( Ha A Rin Jeon ),( Hang Cheol Shin ) 한국생화학분자생물학회 (구 한국생화학회) 2008 생화학분자생물학회 춘계학술발표논문집 Vol.2008 No.-

Quantification of inhaled aerosol particles composed of toxic household disinfectant using radioanalytical method

Shim, Ha Eun,Lee, Jae Young,Lee, Chang Heon,Mushtaq, Sajid,Song, Ha Yeon,Song, Lee,Choi, Seong-Jin,Lee, Kyuhong,Jeon, Jongho Elsevier 2018 CHEMOSPHERE - Vol.207 No.-

<P><B>Abstract</B></P> <P>To assess the risk posed by a toxic chemical to human health, it is essential to quantify its uptake in a living subject. This study aims to investigate the biological distribution of inhaled polyhexamethylene guanidine (PHMG) aerosol particle, which is known to cause severe pulmonary damage. By labeling with indium-111 (<SUP>111</SUP>In), we quantified the uptake of PHMG for up to 7 days after inhalation exposure in rats. The data demonstrate that PHMG is only slowly cleared, with approximately 74% of inhaled particles persisting in the lungs after 168 h. Approximately 5.3% of inhaled particles were also translocated to the liver after 168 h, although the level of redistribution to other tissues, including the kidneys and spleen, was minimal. These observations suggest that large uptake and slow clearance may underlie the fatal inhalation toxicity of PHMG in humans.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Polyhexamethylene guanidine (PHMG), a humidifier disinfectant, was labeled with In-111. </LI> <LI> Aerosol particles comprising radiolabeled PHMG was exposed to rats for biodistribution study. </LI> <LI> Biological uptake and translocation level of inhaled PHMG was quantified for 1 week. </LI> <LI> Approximately 74% of inhaled PHMG was retained in the lungs 1 week after exposure. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>