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( Nae Yun Heo ),( Young Suk Lim ),( Woochang Lee ),( Minkyung Oh ),( Jiyun An ),( Dan Bi Lee ),( Ju Hyun Shim ),( Kang Mo Kim ),( Han Chu Lee ),( Yung Sang Lee ),( Dong Jin Suh2 ) 대한간학회 2014 Clinical and Molecular Hepatology(대한간학회지) Vol.20 No.2
Background/Aims: There are few available data regarding the association between the single nucleotide polymorphisms (SNPs) of the gene encoding interleukin 28B (IL28B) and a sustained virologic response (SVR) to peginterferon (PEG-IFN) plus ribavirin (RBV) therapy in Korean chronic hepatitis C patients. Methods: This was a retrospective cohort study of 156 patients with chronic hepatitis C virus (HCV) infection who received combination treatment of PEG-IFN plus RBV. Blood samples from these patients were analyzed to identify the IL28B SNPs at rs12979860, rs12980275, rs8099917, and rs8103142. Association analyses were performed to evaluate the relationships between each IL28B SNP and SVRs. Results: Seventy six patients with HCV genotype 1 and 80 with genotype non-1 were enrolled. The frequencies of rs12979860 CC and CT genotypes were 90.4% and 9.6%, respectively; those of rs12980275 AA and AG genotypes were 87.2% and 12.8%, respectively; those of rs8099917 TT and TG genotypes were 92.3% and 7.7%, respectively; and those of rs8103142 TT and CT genotypes were 90.4% and 9.6%, respectively. Among the patients with HCV genotype 1, the SVR rates were 69.7% and 80.0% for rs12979860 CC and CT, respectively (P=0.71). Among the HCV genotype non-1 patients, SVR rates were 88.0% and 100% for rs12979860 CC and CT (P=1.00), respectively. Conclusions: Genotypes of the IL28B SNP that are known to be favorable were present in most of the Korean patients with chronic hepatitis C in this study. Moreover, the IL28B SNP did not influence the SVR rate in either the HCV genotype 1 or non-1 patients. Therefore, IL28B SNP analysis might be not useful for the initial assessment, prediction of treatment outcomes, or treatment decision-making of Korean chronic hepatitis C patients. (Clin Mol Hepatol 2014;20:177-184)
( Hee Yeon Kim ),( Jong Young Choi ),( Dong Goo Kim ),( Myoung Soo Kim ),( Soon Il Kim ),( Shin Hwang ),( Sung Gyu Lee ),( Kwang Woong Lee ),( Kyung Suk Suh ),( Young Seok Han ),( Dong Lak Choi ),( Se 대한간학회 2012 춘·추계 학술대회 (KASL) Vol.2012 No.-
Background: The outcome of hepatitis B virus (HBV) infection after liver transplantation (LT) was improved by hepatitis B immunoglobulin (HBIG) and nucles(t)ide analogue (NUA). However, HBV recurrence after LT is critical because the recurrence is occasionally accompanied by a progressive destruction of graft and poor survival. The aims of this study were to investigate the significance HBV recurrence and identity factors associated with HBV recurrence. Methods: From October 1999 to February 2011, a total of 2684 consecutive LT recipients who underwent HBV-associated LT were retrospectively enrolled from 7 transplantation centers in Korea. Results: Prophylaxis regimens were HBIG monotherapy (67.7%) or a combination of HBIG with NUA (22.3%). The recurrence rate of HBV was 6.1% (164 recipients) during mean follow-up duration of 10.9 years. The median time from transplantation to recurrence was 2.1 years (0.1-7.9 years). Of the 1,071 patients with hepatocellular carcinoma (HCC) prior to LT, 155 patients (14.5%) had HCC recurrence after transplantation, and 48 patients (31.0%) had HBV recurrence. Of the 48 patients with recurrence of both HBV and HCC, 25 patients (52.1%) experienced HBV recurrence after HCC recurrence. In the multivariate analysis, pretransplant HCC, pretransplant HBV DNA above 5.5 log copies/mL was independent clinical factors influencing HBV recurrence after LT. The mortality rate among the recipients with HBV recurrence was 34.1% (56 recipients). Mean overall survival was 6.4 years in the HBV-recurrence group and 9.9 years in the HBV-nonrecurrence group (p<0.001). HBV recurrence was not an independent prognostic factor for overall survival. HCC recurrence was the most important factor for overall survival. Conclusions: The overall outcome of LT in HBV-related liver disease was excellent with the current prophylaxis regimen Choon Hyuck David Kwon,8 Suk-Koo Lee8 Pretransplant HBV DNA and HCC were important factors for HBV recurrence. HBV recurrence after LT did not significantly influence on the overall survival without combining of HCC recurrence.
( Sung-woo Ahn ),( Nam-joon Yi ),( Kyung Chul Yoon ),( Suk Kyun Hong ),( Hyo-sin Kim ),( Hyeyoung Kim ),( Youngrok Choi ),( Kwang-woong Lee ),( Kyung-suk Suh ) 대한간학회 2016 춘·추계 학술대회 (KASL) Vol.2016 No.1
Purpose: Pediatric liver transplantation (PLT) has been the key therapy for end stage liver disease and the outcome has been excellent. However, still surgical complication associated with small recipient is the main cause of graft loss. In the present study, we assessed recent advances in outcome of PLTs through our experience. Methods: A total of 235 PLTs performed between Mar 1988 and July 2015 were analyzed. Three chronological periods were investigated: the initial period (1988-2007, n=117), the mid-term period in which our PLT management protocol was settled down (2008-2011, n=62), and the period in which surgical procedures were refined for small children (2012-2015, n=56). Results: The grafts’ (84% vs. 82% vs. 98%) and patients’ (84% vs. 87% vs. 98%) survival have been improved (p<0.05), whereas the number of biliary atresia (31% vs. 45% vs. 50%) deceased and the proportion of deceased donor (24% vs. 36% vs. 52%) and split PLT (7%vs. 16% vs. 46%) increased (p<0.05). The number of re-LT (3% vs. 9% vs. 2%) has been changed. ABO incompatible PLT has introduced on the last period (9%). Conclusion: The quality of the PLT has recently been standardized through a large volume of experience, and the operation has been proven to improve the survival outcome. However, a constant evaluation of our experience is critical for further progress.
Suh, Youngjoon,Lu, Ning,Lee, Sang H.,Chung, Won-Suk,Kim, Kyungkon,Kim, BongSoo,Ko, Min Jae,Kim, Moon J. American Chemical Society 2012 ACS APPLIED MATERIALS & INTERFACES Vol.4 No.10
<P>It was found that the Ag electrode layer in a transmission electron microscopy (TEM) specimen of an inverted polymer solar cell structure of Ag/PEDOT:PSS/P3HT:PCBM/TiO<SUB>2</SUB>/ITO/glass (where PEDOT is poly(3,4-ethylenedioxythiophene), PSS is polystyrene sulfonate, and ITO is indium tin oxide) was broken down into particles as time passed. In order to investigate the cause of Ag particle formation and the effect of the degradation on the performance of solar cells, the temporal change of the cross-sectional TEM micrographs was examined together with energy-dispersive X-ray spectroscopy (EDS) analysis and electron tomography. Temporal degradation of Ag/Si and Ag/1 nm-Ti/PEDOT:PSS/ITO/glass structures was also studied. Absorption of water by the PEDOT:PSS layer followed by corrosion of the grain boundaries of the Ag layer by the corrosive water was thought to be the reason of Ag particle formation and fast performance lowering of the device.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/aamick/2012/aamick.2012.4.issue-10/am301818z/production/images/medium/am-2012-01818z_0016.gif'></P>
Two-dimensional Largest ovarian area to predict ovarian response in in vitro fertilization cycle
( Sang Don Kim ),( Byung Chul Jee ),( Chang Suk Suh ),( Seok Hyun Kim ),( Young Min Choi ),( Jung Gu Kim ),( Shin Yong Moon ) 대한산부인과학회 2010 Journal of Womens Medicine Vol.3 No.2
Objective: To evaluate the usefulness of two dimensional largest ovarian area (LOA) as a predictive parameter of oocyte yield and pregnancy in in vitro fertilization (IVF) cycle. Methods: Ninety-two stimulated IVF cycles from sixty-eight infertile women were included. On the day 3 of cycles, antral follicle count (AFC) and LOA were measured by ultrasonography before starting gonadotropins. LOA was calculated by ellipsoid formula (D1×D2×0.8) using two perpendicular diameters in the largest cross-sectional view of each ovary and then summed. Results: Both LOA and AFC had a positive correlation with the number of retrieved oocytes. The best cut-off value of LOA was 6.14 cm2 for predicting poor ovarian response (area under curve [AUC], 0.783; 95% confidence interval [CI], 0.684 to 0.862), 7.70 cm2 for predicting cycle cancellation (AUC, 0.794; 95% CI, 0.697 to 0.871) and 8.36 cm2 for predicting pregnancy (AUC, 0.641; 95% CI, 0.534 to 0.739). For AFC, the best cut-off value was 9 for poor ovarian response (AUC, 0.877; 95% CI, 0.792 to 0.936), 6 for predicting cycle cancellation (AUC, 0.942; 95% CI, 0.872 to 0.980) and 9 for pregnancy (AUC, 0.683; 95% CI, 0.578 to 0.776). The predictability for pregnancy was similar between LOA and AFC. Conclusion: LOA is easy to measure and a good marker for predicting ovarian response and IVF pregnancy.
Long-Term Outcomes after Living Liver donation: Analysis of National Data Base
( Suk Kyun Hong ),( Nam-joon Yi ),( Hyo-sin Kim ),( Sung-woo Ahn ),( Kyung Chul Yoon ),( Dongkyu Oh ),( Hyeyoung Kim ),( Kwang-woong Lee ),( Kyung-suk Suh ) 대한간학회 2017 춘·추계 학술대회 (KASL) Vol.2017 No.1
Aims: The aim of this study is to determine the long-term outcome of living donor using national data base of Korea, where most liver transplantations were performed by living donors. Methods: Live liver donors were drawn from a national registry of 10,116 live liver donors in Korea between Feb, 2000, and Dec, 2015. Mean follow-up was 6.3 ± 4.1 years. Results: The mean age of donors were 30.7 ± 10.1 (16-75) years and male sex was 66.1%. The mean body mass index was 22.9 ± 3.0 (11.6-53.4) kg/m2. Unmarried donors were 50.6%. Underlying medical history including operation was noted in 57 donors (0.6%). Smoking and drinking histories were positive in 158 (1.6%) and 211 (2.1%) donors. The donor mortality rate was 0.52% (n=53) with 15-year survival rate 98.8%; one, two, and 8 deaths within 30 days, 60 days, and one year of donation. Mortality group was older (36.8 ± 12.2 vs. 30.6 ± 10.1 years; P=0.001) and male dominant (79.2% vs. 20.8%; P=0.042). Donors with smoking history had more mortality than non-smokers (2.5% vs. 0.3%; P=0.009). Conclusions: This study has generated reliable data on long-term outcome of live liver donor using national data base. Keeping in mind that donor deaths occur, more attention should be paid in hepatic resection for live liver donor.
Characteristics of Color Differences of Rainbow-Colored Veneers by Fading Test
Suh, Jin Suk,Park, Sang Bum,Kim, Jong In,Park, Ryeong Jae,Cho, Young Hee Korea Furniture Society 2015 한국가구학회지 Vol.28 No.3
Natural dyeing is considered to be an alternative to chemical staining in terms of harmful VOC-free and environmentally-friendly ingredient. This study was concerned with an evaluation of color performance of naturally dyed- and painted veneer for cylindrical laminated veneer lumber etc. according to the used condition in terms of existence of light and heat in drying. From the results, the color changes by the color of dyed veneer and the type of paint are likely to be affected by fading condition of light or heat. In the future, long-term outdoor exposure test needs to be additionally followed in order to evaluate durable usability of colored veneers.
( Sang Ju Lee ),( Yoon Kyoung Chang ),( Ki Rayng Na ),( Kang Wook Lee ),( Kwang Sun Suh ),( Suk Young Kim ),( Yoon Sik Chang ),( Young Tai Shin ),( Byung Kee Bang ) 대한신장학회 2009 Kidney Research and Clinical Practice Vol.28 No.2
Purpose: Preconditioning due to activation of AMPK might reduce ischemia-reperfusion (I/R) injury in the kidney, based on the key role of AMPK in preserving ATP. To evaluate this possibility, the effect of preconditioning with 5-aminoimidazole-4-carboxamide ribonucleoside (AICAR), AMPK activator, before sustained ischemia was investigated. Methods: Adult male Sprague-Dawley rats weighing approximately 220-250 g were used. To induce renal ischemia, a laparotomy was performed under ketamine and xylazine hydrochloride, and the blood supply to both kidneys was interrupted by placement of vessel clamps at the level of the renal pedicles. Reflow was initiated by removing the clamps. The following experimental groups were defined 1. Acute renal ischemia 0 sec, 10 min, 15 min, 2. AICAR treatment, 3. Sham group (S), 4. Ischemia/Reperfusion group (I/R), 5. AICAR+I/R group (A+I/R), 6. AraA (Adenine-9-b-D-arabinofuranoside, an AMPK) inhibitor+AICAR+I/R group (AraA+A+I/R). Results: There was only faint AMPK phosphorylation in the sham group. After 10 minutes of ischemia, or AICAR preconditioning however, Thr172 phosphorylation of AMPK was increased (p<0.05). The serum levels of BUN and creatinine were significantly decreased in AICAR preconditioning group (A+I/R). (128.0±7.33 mg/dL, 4.18±0.27 mg/dL vs. 90.2±11.13 mg/dL, 2.58±0.7 mg/dL, p<0.05), but these effects were attenuated by AMPK inhibitor, AraA (AraA+A+I/R group). In quantitative analysis of tubular injury, tubular injury score in AICAR preconditioning group significantly decreased (p<0.05). Conclusion: The AMPK activator AICAR has a protective effect against renal I/R injury.