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Sim, Doo Sun,Jeong, Myung Ho,Ahn, Youngkeun,Kim, Young Jo,Chae, Shung Chull,Hong, Taek Jong,Seong, In Whan,Chae, Jei Keon,Kim, Chong Jin,Cho, Myeong Chan,Seung, Ki Bae,Park, Seung Jung The Korean Academy of Medical Sciences 2011 JOURNAL OF KOREAN MEDICAL SCIENCE Vol.26 No.4
<P>This study compared clinical outcomes of drug-eluting stents (DES) versus bare-metal stents (BMS) in large coronary arteries in patients with acute myocardial infarction (MI). A total of 985 patients who underwent single-vessel percutaneous coronary intervention (PCI) in large coronary arteries (≥ 3.5 mm) in lesions < 25 mm were divided into DES group (n = 841) and BMS group (n = 144). Clinical outcomes during 12 months were compared. In-hospital outcome was similar between the groups. At six months, death/MI rate was not different. However, DES group had significantly lower rates of target-lesion revascularization (TLR) (1.7% vs 5.6%, <I>P</I> = 0.021), target-vessel revascularization (TVR) (2.2% vs 5.6%, <I>P</I> = 0.032), and total major adverse cardiac events (MACE) (3.4% vs 11.9%, <I>P</I> = 0.025). At 12 months, the rates of TLR and TVR remained lower in the DES group (2.5% vs 5.9%, <I>P</I> = 0.032 and 5.9% vs 3.1%, <I>P</I> = 0.041), but the rates of death/MI and total MACE were not statistically different. The use of DES in large vessels in the setting of acute MI is associated with lower need for repeat revascularization compared to BMS without compromising the overall safety over the course of one-year follow-up.</P>
SET/CMOS hybrid process and multiband filtering circuits
Song, Ki-Whan,Lee, Yong Kyu,Sim, Jae Sung,Jeoung, Hoon,Lee, Jong Duk,Park, Byung-Gook,Jin, You Seung,Kim, Young-Wug Institute of Electrical and Electronics Engineers 2005 IEEE transactions on electron devices Vol.52 No.8
We have developed an integration technology for the single electron transistor (SET)/CMOS hybrid systems. SET and CMOS transistors can be optimized without any possible degradation due to mixing dissimilar devices by adopting just one extra mask step for the separate gate oxidation (SGOX). We have confirmed that discrete devices show ideal characteristics required for the SET/CMOS hybrid systems. An SET shows obvious Coulomb oscillations with a 200-mV period and CMOS transistors show high voltage gain. Based on the hybrid process, new hybrid circuits, called periodic multiband filters, are proposed and successfully implemented. The new filter is designed to perform a filtering operation according to the periodic multiple blocking bands of which a period is originated from the SET. Such a novel function was implemented efficiently with a few transistors by making full use of the periodic nature of SET characteristics.
이호심(Ho Sim Lee),이성걸(Seong Geol Lee),이정선(Jeong Sun Lee),최창환(Chang Whan Choi),김용기(Young Ki Kim),김종숙(Jong Sook Kim),우제호(Je Ho Woo) 대한소화기학회 1991 대한소화기학회지 Vol.23 No.4
Solid and papillary epithelial tumor that occurs chiefly in young woman. It is amenable to surgical resection and cure. Recurrence after operation and distant metastasis are rare. But, a few cases with recurrence or distant metastasis have been reported. We have encounted a case of solid and papillary tumor of the pancreas with distant metastasis and recurrence 7 years after resection in 34 years old female, so report it.
Regulation of L-type Calcium Channel Current by Somatostatin in Guinea-Pig Gastric Myocytes
Kim, Young-Chul,Sim, Jae-Hoon,Lee, Sang-Jin,Kang, Tong-Mook,Kim, Sung-Joon,Kim, Seung-Ryul,Youn, Sei-Jin,Lee, Sang-Jeon,Xu, Wen Xie,So, In-Suk,Kim, Ki-Whan The Korean Society of Pharmacology 2005 The Korean Journal of Physiology & Pharmacology Vol.9 No.2
To study the direct effect of somatostatin (SS) on calcium channel current ($I_{Ba}$) in guinea-pig gastric myocytes, $I_{Ba}$ was recorded by using whole-cell patch clamp technique in single smooth muscle cells. Nicardipine ($1{\mu}M$), a L-type $Ca^{2+}$ channel blocker, inhibited $I_{Ba}$ by $98{\pm}1.9$% (n=5), however $I_{Ba}$ was decreased in a reversible manner by application of SS. The peak $I_{Ba}$ at 0 mV were decreased to $95{\pm}1.5$, $92{\pm}1.9$, $82{\pm}4.0$, $66{\pm}5.8$, $10{\pm}2.9$% at $10^{-10}$, $10^{-9}$, $10^{-8}$, $10^{-7}$, $10^{-5}$ M of SS, respectively (n=3∼6; $mean{\pm}SEM$). The steady-state activation and inactivation curves of $I_{Ba}$ as a function of membrane potentials were well fitted by a Boltzmann equation. Voltage of half-activation ($V_{0.5}$) was $-12{\pm}0.5$ mV in control and $-11{\pm}1.9$ mV in SS treated groups (respectively, n=5). The same values of half-inactivation were $-35{\pm}1.4$ mV and $-35{\pm}1.9$ mV (respectively, n=5). There was no significant difference in activation and inactivation kinetics of $I_{Ba}$ by SS. Inhibitory effect of SS on $I_{Ba}$ was significantly reduced by either dialysis of intracellular solution with $GDP_{\beta}S$, a non-hydrolysable G protein inhibitor, or pretreatment with pertussis toxin (PTX). SS also decreased contraction of guinea-pig gastric antral smooth muscle. In conclusion, SS decreases voltage-dependent L-type calcium channel current ($VDCC_L$) via PTXsensitive signaling pathways in guinea-pig antral circular myocytes.
위장관출혈부위와 혈청 Urea와 Creatinine 비의 관련성
이성걸(Seong Geol Lee),최창환(Chang Whan Choi),문현웅(Hyun Woong Moon),정영호(Young Ho Jeong),이호심(Ho Sim Lee),김용기(Yong Ki Kim),김종숙(Chong Sook Kim) 대한소화기학회 1994 대한소화기학회지 Vol.26 No.3
N/A We evaluated the usefulness of serum urea and creatinine ratios to differentiate bleeding sites in 63 patients vith gastrointestinal bleeding from August 1991 to Viay 199Z, The follow- ing results were obtained: Serum urea and creat.inine ratios in the upper gastrointestinal group were significantly higher than those in t.he lower gastrointestinal bleeding and control. The ratios were higher in proportion to the volume of blood loss in the upper gastrointestina! Bleeding group. The percent of patients over 80 in the ratios was 77 % in t.he uppcr gastrointestinal bleeding gr oup, whereas was 6.2 % in the lower gastrointestinal bleeding. Thc upper gastrointestinal bleeding, the ratios below 80 were obtained in 11 cases which ha<l cases of small amount bleeding, shortening of intestinal transit tirne, correction of body I'luid arid electrolyte imbalance, and other unknown causes. Result,s of above studies indicated that de terrnination of serum urea and creatinine ratios was a simple and useful procedure fr diagno sis, but we need further study t.o det,ermine the presence of factors to the rat.io variability.(Ko rean J Gastroenterol 1994; 26: 432 436)
Kim, Min Chul,Jeong, Myung Ho,Sim, Doo Sun,Hong, Young Joon,Kim, Ju Han,Ahn, Youngkeun,Ahn, Tae Hoon,Seung, Ki Bae,Choi, Dong-Joo,Kim, Hyo-Soo,Gwon, Hyeon Cheol,Seong, In Whan,Hwang, Kyung Kuk,Chae, S Elsevier 2018 The American journal of cardiology Vol.121 No.11
<P>The optimal timing of percutaneous coronary intervention (PCI) in patients with non–ST-segment elevation myocardial infarction (NSTEMI), complicated by acute decompensated heart failure (ADHF), is unclear. A total of 1,027 patients with NSTEMI complicated by ADHF who underwent successful PCI were analyzed using a Korean multicenter registry. All patients were divided into 4 groups by the timing of PCI: group 1 (PCI < 2 hour after admission, n = 149), group 2 (2 to 24 hours, n = 577), group 3 (24 to 72 hours, n = 189), and group 4 (≥72 hours, n = 112). We analyzed the incidences of 12-month mortality, nonfatal myocardial infarction (MI), target-vessel revascularization, and rehospitalization because of HF. The prevalence of ADHF in patients with NSTEMI was 15.2% at initial presentation, and in-hospital mortality was higher in group 1 than in the other groups. There were no significant differences in mortality, nonfatal MI, target-vessel revascularization, or rehospitalization for HF during the 12-month follow-up between groups, regardless of initial PCI timing, except for a higher 12-month mortality in patients who received PCI within 24 hours (vs ≥24 hours) (hazard ratio 1.52, 95% confidence interval 1.09 to 2.29, p = 0.046). Early PCI did not reduce adverse clinical outcomes in patients with NSTEMI complicated by ADHF. Delayed PCI after stabilization may be reasonable in such high-risk patients.</P>