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황산마그네슘이 인간제대정맥내피세포의 VEGF와 Caspase-3에 미치는 영향
이귀세라 ( Gui Se Ra Lee ),김사진 ( Sa Jin Kim ),김소영 ( So Young Kim ),이영 ( Young Lee ),박상희 ( Sang Hi Park ),신종철 ( Jong Chul Shin ),유영옥 ( Young Oak Lew ),김수평 ( Soo Pyung Kim ) 대한주산의학회 2004 大韓周産醫學會雜誌 Vol.15 No.3
목적 : 황산마그네슘이 혈관 내피 세포의 caspase-3와 VEGF의 농도에 어떠한 영향을 미치는지를 알아보기 위하여 본 연구를 하였다. 방법 : 임신 말기에 계획된 제왕절개를 시행한 태아의 제대로부터 정맥내피세포(HUVECs)를 추출하여 TNF-α로 처리한 군과 처리하지 않은 두 군으로 나누어 황산마그네슘을 각 농도 별(0, 4, 8, 12 mM)로 가하여 배양한 후 배양 상청액으로 VEGF에 대한 ELISA assay를, caspase-3에 대하여 colorimeter assay를 시행하여 그 농도를 측정하였다. 결과 : HUVECs에서의 VEGF의 발현 농도는 TNF-α로 처리한 경우가 처리하지 않은 경우에 비하여 유의적으로 증가하였다. TNF-α를 가한 경우는 황산마그네슘의 농도에 따른 VEGF의 농도에 유의적인 차이가 없으나 TNF-α를 가하지 않은 경우 황산마그네슘의 농도가 4 mM 및 8 mM인 경우에 가장 낮은 농도로 발현되었다. caspase-3의 농도는 TNF-α와 황산마그네슘의 농도에 따른 유의적인 차이가 없었다. 결론 : HUVECs에서의 VEGF의 발현은 TNF-α에 의하여 증가되나 황산마그네슘의 농도 변화에 따른 영향은 없고, TNF-α에 의한 자극이 없는 경우는 황산마그네슘의 치료적 농도에서 그 발현은 감소되는 반면 caspase-3의 발현은 TNF-α와 황산마그네슘의 영향을 받지 않는 것 같다. Objectives : To determine the effects of magnesium sulfate on Caspase-3 and Vascular endothelial growth factor (VEGF) of human umbilical vein endothelial cells (HUVECs) under presence or absence of Tumor necrosis factor (TNF-α). Methods : HUVECs were isolated from normal term umbilical cords and cultured in several physiolo-gically relevant concentrations of magnesium sulfate with or without exposure of TNF-α. The concentrations of VEGF and caspase-3 were estimated by colorimetric assay and ELISA assay, respectively. Results : The concentration of VEGF in HUVECs significantly increased in the presence of TNF-α compared with in the absence of TNF-α. However, the concentration of VEGF did not show significant difference in several concentrations of magnesium sulfate concentrations with addition of TNF-α and it showed the lowest concentration under 4 mM and 8 mM of magnesium sulfate concentration without addition of TNF-α. The concentration of caspase-3 in HUVECs did not show statistically significant difference with the addition of TNF-α and magnesium sulfate. Conclusion: TNF-α induce HUVECs to stimulate the VEGF, and magnesium sulfate might not have the effects on the expression of VEGF with addition of TNF-α. However, the concentration for treatment of magnesium sulfate inhibits the expression of VEGF without addition of TNF-α. Magnesium sulfate might not have an effect of the expression of caspase-3 with or without addition of TNF-α.
Photodecomposition Mechanism of Diazoindanones by Laser Photolysis and Lamp Photolysis
Lim, Gui Taek,Uhm, Tae Seop,Sung, Dae Dong,Shin, Joong Soo 東亞大學校 附設 基礎科學硏究所 1994 基礎科學硏究論文集 Vol.11 No.1
The mechanism for the photodecomposition reactions of 2-diazoindan-1-one and 1.3-bis(diazo)indan-2-one have been studied in benzene, toluene, methanol, cyclohexane and acetonitrile solvents using laser photolysis and lamp photolysis. A triplet ketocarbene is observed from the photolysis of bis diazo compounds by the loss of nitrogen molecule from the carbene precursors. It is concluded that the Wolff rearrangement, which involves the formation of a ketene intermediate, can be regarded as a concerted process in nanosecond time scale. The photolytic reactions of diazoindanones in methanol give Wolff rearrangement products, but those in benzene do not involve in the Wolff rearrangement.
Preserved skin structure of a recently found fifteenth-century mummy in Daejeon, Korea
Chang, Byung Soo,Uhm, Chang Sub,Park, Chang Hyun,Kim, Han Kyeom,Lee, Gui Young,Cho, Han Hee,Kim, Myeung Ju,Chung, Yoon Hee,Song, Kang Won,Lim, Do Sun,Shin, Dong Hoon Blackwell Publishing Ltd 2006 Journal of anatomy Vol.209 No.5
<P>Abstract</P><P>Recently published reports on Korea's medieval mummies have been regarded as an invaluable source for studies into the physical characteristics of medieval Koreans. However, even though the mummified tissues have been investigated histologically on various previous occasions, there are many unanswered questions relating to their tissue preservation. The aim of this study was to obtain new data on the ultramicroscopic characteristics of the mummified skin of a fifteenth-century mummy found recently in Daejeon – one of the oldest ever found in Korea. Electron microscopy revealed that much of the epidermis had decayed; what remained of the dermis was filled with collagen fibres and melanin granules or invading bacterial spores present within the mummified epidermis. Considering the histological characteristics shared by naturally formed mummies in different parts of the world, we concluded that the ultramicroscopic patterns of the Daejeon mummy were more comparable with those naturally formed mummies than with artificially formed ones. This is the first full description of the morphological characteristics of the skin collected from this recently found medieval mummy from Daejeon, South Korea.</P>
증례 보고 : 임신 후반기에 발생한 파열된 난소난관농양 1 예
신희경(Hee Gung Shin),이수미(Soo Mi Lee),김호성(Ho Sung Kim),김건수(Geon Su Kim),윤귀옥(Gui Ohk Yoon),김상용(Sang Yong Kim),조태일(Tae Il Cho) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.9
Tuboovarian abscess associated with pregnancy is not commonly reported. Diagnosis may be difficult if the obstetrician is not aware that this condition can occur during pregnancy. The diagnosis is often made at laparotomy by a physician expecting appendicitis or another inflam-matory condition. A case of ruptured tuboovarian abscess on 34 weeks' gestation of pregnancy was presented and reviewed briefly.