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Kim, Yoo-Suk,Kwak, Jin Wook,Lee, Kyu Eun,Cho, Hyun Sang,Lim, Su Jin,Kim, Kyung Soo,Yang, Hoon Shik,Kim, Hyun Jik Mary Ann Liebert 2014 ANTIOXIDANTS AND REDOX SIGNALING Vol.21 No.9
<P>Mitochondrial dysfunction reflects a lifelong cumulative burden of cellular damage, and a decrease in mitochondrial DNA (mtDNA) copy number is associated with oxidative stress and chronic inflammation. The goal of this study was to assess whether mitochondrial dysfunction and a decrease in mtDNA copy number are common features of patients with obstructive sleep apnea syndrome (OSA). We compared mtDNA copy number between 20 healthy volunteers and 20 patients with OSA and investigated whether a significant attenuation of mtDNA copy number was observed in genomic DNA isolated from whole blood of OSA patients. Our observations lead to the hypothesis that mtDNA copy number is lower in whole blood DNA of OSA subjects and might be related to OSA severity, reflecting excessive oxidative stress in patients with OSA.</P>
Pentalateral Osteotomy for Cubitus Varus Deformity : A Pitfall in Internal Fixation 내고정 방법에 대한 비교
Kim, Byung Jik,Ko, Han Suk,Kim, Young Uk,Seo, Jeong Gook,Choo, Suk Kyu,Jeong, Woo Suk 인제대학교 1995 仁濟醫學 Vol.16 No.1
성장기 아동에서 흔히 발생하는 주관절부 골절 손상은 많은 합병증을 초래할 수 있다. 만기 합병증으로는 내반주 변형이 가장 많으며, 이러한 주관절부 각 변형을 교정하기 위한 절골술에는 여러 방법들이 소개되어 있다. 본 저자들이 채택한 외측 오각절골술은 Laupattarakasen이 발표한 절골술로서 외반 절골술 후 흔히 있는 외측 절골부에 생기는 층을 없애므로써, 돌출로 인한 미용상의 문제와 Lazy-S 변형을 피할 수 있고, 절골부의 접촉면적을 넓힘으로써 골 유합을 촉진시킬 수 있으며 절골술 후 K 강선과 압박 나사못으로 교정이 충분하다고 하였다. 그러나 내고정이 불충분하여 여러 합병증들이 예상되어 절골술 후 내고정에 대한 본 연구를 시행하게 되었다. 저자들은 1990년 9월부터 1993년 4월까지 약 3년동안 추시가 가능하였던 외측 오각절골술을 실시한 16례 중 K강선과 나사로만 고정한 5례와 금속판과 나사로 고정하였던 11례를 전향적 추적 조사 방법으로 수술전 후의 결과를 비교하고자 하였다. Laupattarakasen이 제시한 K강선과 나사로만 고정한 5례 중 3명의 환자가 고정의 소실로 재수술을 시행하였고, 초기 절골술시의 교정각도의 변형이 있었으며, 1명만이 합병증의 발생없이 골유합 소견을 보였다. 반면에 금속판과 나사못을 이용한 외측 오각절골술을 실시한 11명의 환자는 초기 교정의 실패없이 초기에 원하던 교정각도로 교정을 할 수 있었으며 단 1명만이 점액낭염의 합병증이 있었으며 견고한 내고정으로 인해 조기에 관절운동을 실시함으로써, 관절기능을 조기에 회복할 수 있었다. 따라서 외측 오각절골술시 금속판 및 나사못를 이용한 방법이 광범위한 연부조직의 절개, 골유합 후 금속판의 제거등의 단점이 있지만, 보다 견고한 내고정을 함으로써 조기에 관절운동이 가능하였고, 모두 골유합을 얻었으므로 특히, 청소년이나 성인에서는 외측 오각절골술시 금속판과 나사못을 이용한 내고정술이 좋을 것으로 생각된다. The pentalateral osteotomy for cubitus varus deformity was first introduced by Dr. Laupattarakasem in 1989. The osteotomy was aimed at preventing lateral bulging and lazy-S deformity at the osteotomy site while correcting varus and rotational deformity. In his original paper, the fixation was carried out with only one K-wire and one lag screw and in his later paper the fixation was augmented with 2 parallel K-wires and figure of 8 tension band wires. The authors at Inje University Paik Hospital underwent a randomized prospective study and operated 16 cubitus varus deformity with pentalateral osteotomy since 1990. One group was fixed as in the original paper. Many difficulties and complications were experienced in internal fixation. The fixation in the second group was modified by using plate and screws and good results were acheived. We conclude that pentalateral osteotomy for correction of cubitus varus deformity should be followed by rigid fixation with plate and screw especially in adolescent and adult patients.
불포화 다공성 매질체의 공기-물 경계면 비표면적 계산모델 분석
김민규 ( Kim Min-kyu ),김성배 ( Kim Song-bae ),박성직 ( Park Seong-jik ) 한국농공학회 2006 한국농공학회논문집 Vol.48 No.5
In unsaturated porous media, the air-water interface (AWI) plays an important role in removing of biocolloids such as bacteria, viruses, and protozoan (oo)cysts. In this study, four models related to calculation of specific AWI area are analyzed to determine the appropriate model, and the selected models are verified using the previously reported experimental data. The results indicate that the modified model from Niemet et al. (2002) is the most appropriate tool for calculating the specific AWI area using the van Genuchten (1980) parameters obtained from the water retention curve. Hence, it is expected that this model could be used to quantitatively determine the attachment of biocolloids to AWI in the transport modeling of biocolloids in unsaturated porous media.
( Hyun Jik Lee ),( Chang Min Cho ),( Jun Heo ),( Min Kyu Jung ),( Tae Nyeun Kim ),( Kook Hyun Kim ),( Hyunsoo Kim ),( Kwang Bum Cho ),( Ho Gak Kim ),( Jimin Han ),( Dong Wook Lee ),( Yoon Suk Lee ) 대한간학회 2020 Gut and Liver Vol.14 No.2
Background/Aims: Few studies have addressed the relationship between the occurrence of adverse events (AEs) in endoscopic retrograde cholangiopancreatography (ERCP) and hospital case volume or endoscopist’s experience with inconsistent results. The aim of our study was to investigate the impact of hospital case volume and endoscopist’s experience on the AEs associated with ERCP and to analyze patient- and procedure-related risk factors for post-ERCP AEs. Methods: From January 2015 to December 2015, we prospectively enrolled patients with naïve papilla who underwent ERCP at six centers. Patient- and procedure-related variables were recorded on data collection sheets at the time of and after ERCP. Results: A total of 1,191 patients (median age, 71 years) were consecutively enrolled. The overall success rate of biliary cannulation was 96.6%. Overall, 244 patients (20.5%) experienced post-ERCP AEs, including pancreatitis (9.0%), bleeding (11.8%), perforation (0.4%), cholangitis (1.2%), and others (0.9%). While post-ERCP pancreatitis (PEP) was more common when the procedure was performed by less experienced endoscopists, bleeding was more common in high-volume centers and by less experienced endoscopists. Multivariate analysis showed that a less experience in ERCP was significantly associated with PEP (odds ratio [OR], 1.630; 95% confidence interval [CI], 1.050 to 2.531; p=0.030) and post-ERCP bleeding (OR, 1.439; 95% CI, 1.003 to 2.062; p=0.048). Conclusions: Our study demonstrated that overall AEs following ERCP were associated with the experience of the endoscopist. To minimize post-ERCP AEs, rigorous training with a sufficient case volume is required, and treatment strategies should be modified according to the endoscopist’s expertise.
국내회사와 다국적기업 제조 ELISA 키트의 전염성 기관지염 백신에 따른 항체 검출능 비교
김규직(Kyu-Jik Kim),김준영(Jun-Young Kim),윤하나(Ha-Na Youn),주효선(Hyo-Sun Ju),이다예(Da-Yeah Lee),송창선(Chang-Seon Song) 한국가금학회 2018 韓國家禽學會誌 Vol.45 No.1
전염성기관지염은 전세계적으로 양계산업에 문제시되고 있는 질병으로서 이를 예방하기 위한 연구가 활발히 진행되고 있다(Dhama et al., 2014). 본 연구는 전염성기관지염 백신을 진행한 여러 계군의 혈청을 수집해 국내회사와 다국적기업에서 제조한 ELISA 키트의 검출능 차이를 확인하고자 하였다. 육용원종계부터 산란계까지 총 35개의 계군으로부터 주기적인 채혈을 통해 얻어진 혈청을 사용해 두 가지 키트의 검출능 비교시험을 진행한 결과, 국내회사에서 제조된 ELISA 키트가 더 높은 항체가를 나타냈으며, 이는 미량의 항체도 국내회사 제조 키트를 사용하게 되면 더욱 민감하게 검출될 수 있으며, 농장의 상황 판단에 더욱 도움이 될 수 있을것임을 시사한다. 이러한 결과를 토대로 비추어 보았을 때, 국내에서 발생하고 있는 전염성기관지염에 맞춰 제작된 국내회사 제조 키트가 더 검출능이 뛰어난 것으로 판단된다. 또한, 주기적인 혈청을 이용한 항체가 검사 결과 전염성기관지염 백신 후 항체가 변화 추이를 관찰할 수 있었다. Infectious bronchitis virus (IBV) is an economically important disease in the poultry industry worldwide. This disease commonly manifests respiratory signs, poor egg quality, and decline in egg production. Since IBV is a RNA virus, the emergence of new variant strains is continuously reported and the immunization of susceptible chickens with only one antigenic type of the virus has been shown to induce partial or no protection against other unrelated types. Therefore, it is difficult to diagnose IBV due to variants serotypes. In this study, we collected serum from various ages of Broiler GP (Grandparent) to Layer CC (Commercial chick) and performed detectability comparison test between domestic company and multinational company manufacturing ELISA kit. Results of this experiment suggest that domestic company manufacturing ELISA kit is more sensitive to infectious bronchitis antibody than that of the multinational company. Our findings also suggest that antibody’s change trends after infectious bronchitis vaccination. Thus, the use of appropriate kit for domestic situations is important.