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송철,박종백,이웅기,이강현,양원일 조선대학교 동력자원연구소 1988 動力資源硏究所誌 Vol.10 No.1
This paper deals with the computer interface for the remote control in factory automation, and the concatenated IBM PC, designed interface card, temperature sensors and displayer. As the results 1. easy to expand and maintain the objects of upgrade levels. 2. easy to measure the temperature of product lines. 3. applications can be extended by using IBM PC and its function.
Kang, Woong Chol,Oh, Pyung Chun,Lee, Kyounghoon,Ahn, Taehoon,Byun, Kyunghee The Korean Society of Pharmacology 2016 The Korean Journal of Physiology & Pharmacology Vol.20 No.6
Critical limb ischemia (CLI) is one of the most severe forms of peripheral artery diseases, but current treatment strategies do not guarantee complete recovery of vascular blood flow or reduce the risk of mortality. Recently, human bone marrow derived mesenchymal stem cells (MSCs) have been reported to have a paracrine influence on angiogenesis in several ischemic diseases. However, little evidence is available regarding optimal cell doses and injection frequencies. Thus, the authors undertook this study to investigate the effects of cell dose and injection frequency on cell survival and paracrine effects. MSCs were injected at $10^6$ or $10^5$ per injection (high and low doses) either once (single injection) or once in two consecutive weeks (double injection) into ischemic legs. Mice were sacrificed 4 weeks after first injection. Angiogenic effects were confirmed in vitro and in vivo, and M2 macrophage infiltration into ischemic tissues and rates of limb salvage were documented. MSCs were found to induce angiogenesis through a paracrine effect in vitro, and were found to survive in ischemic muscle for up to 4 weeks dependent on cell dose and injection frequency. In addition, double high dose and low dose of MSC injections increased vessel formation, and decreased fibrosis volumes and apoptotic cell numbers, whereas a single high dose did not. Our results showed MSCs protect against ischemic injury in a paracrine manner, and suggest that increasing injection frequency is more important than MSC dosage for the treatment CLI.
Kang, Woong Chol,Il Moon, Chan,Lee, Kyounghoon,Han, Seung Hwan,Suh, Soon Yong,Moon, Jeonggeun,Shin, Mi Seung,Ahn, Taehoon,Shin, Eak Kyun Lippincott Williams Wilkins, Inc. 2011 Coronary artery disease Vol.22 No.8
BACKGROUND: We compared the relationship between inflammatory markers and neointimal hyperplasia (NIH) after drug-eluting stent (DES) implantation. METHODS: We implanted a single DES in 42 consecutive patients with stable angina. The plasma high-sensitivity C-reactive protein (hs-CRP), interleukin-6 (IL-6), and matrix metalloproteinase-9 (MMP-9) levels were measured before, and 24 and 72 h after the procedure. Angiography and intravascular ultrasound were performed. RESULTS: No relationship was noted between the baseline hs-CRP level and NIH. A significant positive correlation was noted between NIH and the hs-CRP level obtained at 24 h (r=0.435, P=0.004), and 72 h (r=0.334, P=0.031) after the procedure. Interestingly, there was a positive correlation between the change (&Dgr;) in the hs-CRP level and NIH at 24 h (r=0.414, P=0.006). The fourth quartile of the hs-CRP at 24 h after percutaneous coronary intervention (PCI) had significantly larger volume of NIH than the first quartile (20.1±25.1 vs. 2.7±6.4 mm, P<0.05). Moreover, NIH in the fourth quartile (20.9±26.4 mm) was higher than the first quartile (3.3±8.6 mm) of the &Dgr; hs-CRP level at 24 h (P<0.05) after the procedure. Although the IL-6 level at the baseline and 72 h after the procedure were positively correlated with NIH (r=0.337, P=0.029 and r=0.435, P=0.004, respectively), the &Dgr; IL-6 level at any stage was not correlated with NIH. Neither the MMP-9 level nor the &Dgr; MMP-9 level at any stage was correlated with NIH. CONCLUSION: This prospective intravascular ultrasound study showed the inflammatory response after PCI, as measured by hs-CRP levels, but not the baseline hs-CRP level, predict NIH after DES implantation. Neither a change in the IL-6 nor MMP-9 levels at any stage after PCI reflected NIH.
Woong Chol Kang,Pyung Chun Oh,Kyounghoon Lee,Taehoon Ahn,Kyunghee Byun 대한생리학회-대한약리학회 2016 The Korean Journal of Physiology & Pharmacology Vol.20 No.6
Critical limb ischemia (CLI) is one of the most severe forms of peripheral artery diseases, but current treatment strategies do not guarantee complete recovery of vascular blood flow or reduce the risk of mortality. Recently, human bone marrow derived mesenchymal stem cells (MSCs) have been reported to have a paracrine influence on angiogenesis in several ischemic diseases. However, little evidence is available regarding optimal cell doses and injection frequencies. Thus, the authors undertook this study to investigate the effects of cell dose and injection frequency on cell survival and paracrine effects. MSCs were injected at 10<sup>6</sup> or 10<sup>5 </sup>per injection (high and low doses) either once (single injection) or once in two consecutive weeks (double injection) into ischemic legs. Mice were sacrificed 4 weeks after first injection. Angiogenic effects were confirmed <i>in vitro</i> and <i>in vivo</i>, and M2 macrophage infiltration into ischemic tissues and rates of limb salvage were documented. MSCs were found to induce angiogenesis through a paracrine effect <i>in vitro</i>, and were found to survive in ischemic muscle for up to 4 weeks dependent on cell dose and injection frequency. In addition, double high dose and low dose of MSC injections increased vessel formation, and decreased fibrosis volumes and apoptotic cell numbers, whereas a single high dose did not. Our results showed MSCs protect against ischemic injury in a paracrine manner, and suggest that increasing injection frequency is more important than MSC dosage for the treatment CLI.
강웅철 ( Woong Chol Kang ) 대한내과학회 2015 대한내과학회지 Vol.89 No.4
Endovascular therapy, proposed as an alternative to surgery, is considered a therapeutic innovation because of its low degree of invasiveness, allowing for the treatment of high-risk surgical patients and outcomes of limited complications and mortality. The combination of endovascular exclusion with cerebral branch revascularization for the treatment of thoracic aortic aneurysms involving arch has also been attempted. With improved capability to recognize proper anatomy and select clinical candidates, endovascular therapy may offer a strategy to optimize management and improve prognosis for thoracic aortic aneurysm patients. (Korean J Med 2015;89:381-388)
Preliminary evaluation of new <sup>68</sup>Ga-labeled cyclic RGD peptides by PET imaging
Shin, Un Chol,Jung, Ki-Hye,Lee, Ji Woong,Lee, Kyo Chul,Lee, Yong Jin,Park, Ji-Ae,Kim, Jung Young,Kang, Joo Hyun,An, Gwang Il,Ryu, Young Hoon,Choi, Jae Yong,Kim, Kyeong Min Korean Society of Radiopharmaceuticals and Molecul 2016 Journal of radiopharmaceuticals and molecular prob Vol.2 No.2
Integrin ${\alpha}_v{\beta}_3$ plays an important role in the tumor metastases and angiogenesis. Arginine-glycine-aspartate (RGD) peptide motif binds to the integrin ${\alpha}_v{\beta}_3$. General $^{68}Ga$-labeled cyclic RGD peptides was rapidly eliminated from the circulatory system by renal excretion because of its hydrophilic property. The purpose of this study was to develop a novel $^{68}Ga$-labeled cyclic RGD peptides, which could acquire enhanced PET tumor images with improved pharmacokinetics by adopting biphenyl group between chelator and RGD peptides. $^{68}Ga$-DOTA-2P-c(RGDyK) was demonstrated a 12% higher lipophilicity level than $^{68}Ga$-DOTA-c(RGDyK) as a reference compound. In the animal PET, $^{68}Ga$-DOTA-2P-c(RGDyK) represented relatively lower blood-clearance, and an increased signal to noise ratio compared to $^{68}Ga$-DOTA-c(RGDyK). From these perspective, $^{68}Ga$-DOTA-2P-c(RGDyK) could be a good candidate for in integrin ${\alpha}_v{\beta}_3$-expressed tumor imaging.
KUeyes : 생물학적 시각 모형에 기반한 컬러 스테레오 헤드아이 시스템
이상웅(Sang-Woong Lee),최형철(Hyong-Chol Choi),강성훈(Seong-Hoon Kang),이성환(Seong-Whan Lee) 한국정보과학회 2000 한국정보과학회 학술발표논문집 Vol.27 No.1B
KUeyes는 3 차원 실세계의 영상처리를 위해 고려대학교 인공시각연구센터에서 개발된 컬러 스테레오 헤드아이 시스템이다. KUeyes는 인간의 시각 시스템을 모델로 하여 다해상도 변환 영사, 칼라 정보와 거리 정보, 움직임 정보를 이용하여 지능적이고 빠르게 객체를 탐지하여 추적한다. 또한 병렬적으로 수행되는 인식기를 통해 탐지된 사람의 얼굴을 인식한다. 다양한 실험 및 분석을 통해 KUeyes가 복잡한 실영상을 대상으로 움직이는 개체를 실시간으로 안정되게 추적하고 인식하는 것을 확인할 수 있었다.