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최순규,엄기수,성현순,김윤영,이시우,정대일,이용균 동아대학교 환경문제연구소 1994 硏究報告 Vol.17 No.2
The absorption ability of low density heavy metal of pine needles and cones is better than one of existing absorption materials in treatment ability and experimental condition. The elimination ability of chlorine of pine needles and cones is better than one of active carbon. In elimination of trihalomethane, the effect of treatment of pine needles is lower than one of pine cones. And surface of pine needles and cones after absorption of heavy metal ion was observed by Scanning Electron Microscope(SEM). Application and availability of pine needles and cones as absorption material need lots of experiments. The experiment on Gal-Bi(fallen leaves) is proceeding.
악골결손 재건을 위한 탈회 및 비탈회 동결건조 동종골의 이용
이기혁,박인순,김영균,김수관,엄인웅,여환호,이병준 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.3
Bone graft has been used to repair one defect caused by disease and trauma, congenital and acquired deformities. Graft materials are autogenous bone, allogenic bone, xenogenic bone, synthetics. Autogenous bone graft is the most superior to other materials for immunologic reaction, compatibility to host tissue, and revascularization. However, autogenous bone graft is required for additional operation and the amount of taking is limited. Autografts are obtained at own expense and also limited in size, shape. In order to compensate these problems, allogenic bone graft has been used increasingly. But allogenic bone graft encounters immunologic complications. Therefore, it has been used after freezing, lyophilization, or demineralization. Allogenic bone processed by only lyophilization includes potential antigenic properties on its surface, therefore it is demineralized to deplete immunologic reaction. Demineralized bone releases BMP and helps the mesenchymal cells transform to the chondroblast to produce cartilage and bone. This reaction is called osteoinducation. Many authors have reported that mineralized lyophilized bone had less antigenicity clinically and favorable bony consideration with host bone. In our department from 1995 to now, we have used banked allogenic bone graft that has been prepared from Wonkwang Bone Bank in 5 cases and mineralized lyophilized bone graft in 2 cases to reconstruct the maxillofacial bone defect after tumor resection and cyst enucleation and cleft alveolus. We will report with literature review that the result is favorable functionally and esthetically.
Clinical Aspect of Coronavirus Disease 2019 (COVID-19) on HBV Infected Patient
( Young Kul Jung ),( Gi Hyeon Seo ),( Tae Hyung Kim ),( Sun Young Yim ),( Young-sun Lee ),( Ji Hoon Kim ),( Yeon Seok Seo ),( Hyung Joon Yim ),( Jong Eun Yeon ),( Kwan Soo Byun ),( Soon Ho Um ) 대한간학회 2021 춘·추계 학술대회 (KASL) Vol.2021 No.1
( Young Kul Jung ),( Tae Hyung Kim ),( Han Ah Lee ),( Sun Young Yim ),( Young-sun Lee ),( Ji Hoon Kim ),( Yeon Seok Seo ),( Hyung Joon Yim ),( Jong Eun Yeon ),( Kwan Soo Byun ),( Soon Ho Um ) 대한간학회 2020 춘·추계 학술대회 (KASL) Vol.2020 No.1
Aims: Sofosbuvir (SOF) and ribavirin (RBV) for 12 or 16 weeks is recommended for treatment of patients with HCV genotype (GT) 2 infected patients in KASL guideline based on clinical trials. Whether sustained virological response of HCV infection has any beneficial effect on improvement of liver fibrosis associated with chronic HCV infection remains unclear. We investigated to assess the effects on liver fibrosis of at least 2 years through follow-up liver biopsy and fibroelastography after treatment with sofosbuvir plus ribavirin for HCV G2 infection. Methods: Three tertiary center, prospective observational cohort study evaluates clinical practice data (Korea university Anam, Guro, and Ansan) between January 2015 and December 2019. Clinical data were centrally collected from medical records. The efficacy outcome was sustained virological response 12 weeks after therapy (SVR12). The degree of liver fibrosis was evaluated by APRI score, FIB-4, fibroelestography and paired liver tissue biopsy. Results: 146 patients were visited and 131 patients were treated SOF plus RBV during 12 weeks (n=122) or 16 weeks (n=9). Overall, EVR, ETR, and SVR12 by ITT analysis were 90.0%, 96.2% and 87%. In addition, EVR, ETR, and SVR12 by PP analysis 97.5%, 99.2% and 96.3%, respectively. In subgroup analysis, SVR12 in patients with treatment-naïve and treatment-experience were 97.2% or 94.7%, respectively. SVR12 in patients with and without cirrhosis were 94.4% and 97.4%, respectively. Finally 106 patients showed sutained virological response and follow up 2 year after treatment. The mean APRI score was 0.57 before treatment, but improved to 0.27 at 2 year after treatment (P=0.004). The mean FIB-4 score was 2.15 before treatment, but improved to 1.53 at 2 year after treatment (P=0.004). The mean fibroelastography value was 10.81 kPa before treatment, but improved to 4.75 kPa at 2 year after treatment (P=0.008). Follow-up liver tissue biopsies were done in 8 patients and fibrosis was evaluated by Metavir score (F0-4). Almost all patient except one showed improvement of cirrhosis (≥1 unit decrease in Metavir score, P=0.031). Conclusions: SOF and RBV was safe and effective for treatment of patients with HCV GT2 infection. In patients with sustained virological response 2 year after SOF and RBV, the improvement or regression of liver fibrosis could be observed in biochemical and histological aspect.
( Nark Soon Park ),( Yoon Tae Jeen ),( Hyuk Soon Choi ),( Eun Sun Kim ),( Young Jin Kim ),( Bora Keum ),( Yeon Seok Seo ),( Hoon Jai Chun ),( Hong Sik Lee ),( Soon Ho Um ),( Chang Duck Kim ),( Ho Sang 대한소화기학회 2013 Gut and Liver Vol.7 No.4
Background/Aims: Acute complicated diverticulitis can be subdivided into moderate diverticulitis and severe diverticulitis. Although there have been numerous studies on the risk factors for complicated diverticulitis, little research has focused on severe diverticulitis. This study was designed to identify the risk factors for severe diverticulitis in an acute diverticulitis attack using the modified Hinchey classification. Methods: Patients were included if they had any evidence of acute diverticulitis detected by computed tomography. The patients were subdivided into severe diverticulitis (Hinchey class Ib; abscesses or peritonitis) and moderate diverticulitis (Hinchey class Ia; pericolic inflammation) groups. Results: Of the 128 patients, 25 exhibited severe diverticulitis, and 103 exhibited moderate diverticulitis. In a multivariate analysis, age >50 years (odds ratio [OR], 5.27; p=0.017), smoking (OR, 3.61; p=0.044), comorbidity (OR, 4.98; p=0.045), leukocytosis (OR, 7.70; p=0.003), recurrence (OR, 4.95; p=0.032), and left-sided diverticulitis (OR, 6.92; p=0.006) were significantly associated with severe diverticulitis. Conclusions: This study suggests that the risk factors for severe diverticulitis are age >50 years, smoking, comorbidity, leukocytosis, recurrent episodes, and left-sided diverticulitis. (Gut Liver 2013; 7:443-449)
( Moon Young Kim ),( Soon Ho Um ),( Soon Koo Baik ),( Yeon Seok Seo ),( Soo Young Park ),( Jung Il Lee ),( Jin Woo Lee ),( Gab Jin Cheon ),( Joo Hyun Sohn ),( Tae Yeob Kim ),( Young Suk Lim ),( Tae Hy 대한간학회 2013 Clinical and Molecular Hepatology(대한간학회지) Vol.19 No.1
Background/Aims: While gastric variceal bleeding (GVB) is not as prevalent as esophageal variceal bleeding, it is reportedly more serious, with high failure rates of the initial hemostasis (>30%), and has a worse prognosis than esophageal variceal bleeding. However, there is limited information regarding hemostasis and the prognosis for GVB. The aim of this study was to determine retrospectively the clinical outcomes of GVB in a multicenter study in Korea. Methods: The data of 1,308 episodes of GVB (males:females=1062:246, age=55.0±11.0 years, mean±SD) were collected from 24 referral hospital centers in South Korea between March 2003 and December 2008. The rates of initial hemostasis failure, rebleeding, and mortality within 5 days and 6 weeks of the index bleed were evaluated. Results: The initial hemostasis failed in 6.1% of the patients, and this was associated with the Child-Pugh score [odds ratio (OR)=1.619; P<0.001] and the treatment modality: endoscopic variceal ligation, endoscopic variceal obturation, and balloon-occluded retrograde transvenous obliteration vs. endoscopic sclerotherapy, transjugular intrahepatic portosystemic shunt, and balloon tamponade (OR=0.221, P<0.001). Rebleeding developed in 11.5% of the patients, and was significantly associated with Child-Pugh score (OR=1.159, P<0.001) and treatment modality (OR=0.619, P=0.026). The GVB-associated mortality was 10.3%; mortality in these cases was associated with Child-Pugh score (OR=1.795, P<0.001) and the treatment modality for the initial hemostasis (OR=0.467, P=0.001). Conclusions: The clinical outcome for GVB was better for the present cohort than in previous reports. Initial hemostasis failure, rebleeding, and mortality due to GVB were universally associated with the severity of liver cirrhosis. (Clin Mol Hepatol 2013;19:36-44)
Relationship of hepatic venous pressure gradient and prognosis in patients with Liver cirrhosis
Moon Young Kim,Soon Koo Baik,Yoon Ok Jang,Ki Tae Suk,Chang Jin Yea,Il Young Lee,Hye Jung Kim,Hearn Kook Kim,Kyoung Won Park,Jae Woo Kim,Hyun Soo Kim,Sang Ok Kwon,Soon Ho Um,Kwang Hyub Han 대한간학회 2008 Clinical and Molecular Hepatology(대한간학회지) Vol.14 No.3(S)