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Clothing Pressure of selected Support Panty Stockings
(Jeong Eun Park),(Su Kwang Sung),(Min Kyu Song) 한국의류산업학회 2000 한국의류산업학회지 Vol.2 No.5
The purpose of the study was to obtain the basic data on the self-adjusting ability of the support panty stockings. Ten healthy women in the twenties were selected as subjects and clothing pressure of 9 support panty stockings made of single covered yarn (SCY) and double covered yarn (DCY) were measured under the standard environmental condition for the study. Data was analysed statistically according to body postures, sides, and parks. The results were as follows: Clothing pressure according to body posture was order of `sitting-on-a-chair`, `stepping-up-a-stair`, and `standing`. High clothing pressure was obtained in the parts of calf (9.4 gf/㎠) in `standing` and knee (9.7 and 16.5 gf/㎠) in both `stepping-up-a-stair` and `sitting-on-a-chair`, respectively. The order of clothing pressure with body sides was `front`, `side`, and `back`. The highest clothing pressure was knee (18.8 gf/㎠) on the front, thigh (8.8 gf/㎠) on the side, and calf (6.4 gf/㎠) on the back. Clothing pressure of DCY at abdomen and knee was a little higher than those of SCY 3. In terms of material structure variation, clothing pressure of thigh, calf and ankle with SCY was a little higher than those with DCY, while clothing pressure of abdomen and knee with DCY was a little higher than those with SCY.
HPLC Analysis of Methylated Amino Acids : Methylated Amino Acids on HPLC
Park, Kwang-Sook,Hong, Sung-Youl,Lee, Hyang-Woo,Kim, Snag-Duk,Paik, Woon-Ki The Pharmaceutical Society of Korea 1986 Archives of Pharmacal Research Vol.9 No.1
Various naturally occuring methylated amino acid derivatives were resolved on high performance liquid chromatography (HPLC), using o-phthadialdehyde as a fluorogenic reagent. We separated .$\varepsilon$-N-monomethyllysine, $\varepsilon$-N- dimethyllysine, and $\varepsilon$-N-acetyllysine from lysine derivatives. $N^{G}$-Monomethylarginine and $N^{G}$-dimethylarginine were separated from arginine derivatives. However, $\varepsilon$-N-monomethyllsine and $\varepsilon$-N-trimethyllysine, $N^{G}$, $N^{G}$-dimethylarginine and $N^{G}$, $N^{G}$-dimethylarginine were not resolved under the conditions employed. S-Methylmethionine, S-methylcysteine, and 1-N-methylhistidine or 3-N-methylhistidine were clearly separated from their reference amino acids, even though 1-N-methyl-and 3-N-methylhistidine coul not be separated.
Regulation of Tumor Angiogenesis and Endothelial Mesenchymal Transition by Dickkopf-1
( Sung Hoon Choi ),( Hyun Gyu Lee ),( Hyemi Kim ),( Jun Young Park ),( Beomkyung Kim ),( Do Young Kim ),( Sang Hoon Ahn ),( Kwang-hyub Han ),( Seung Up Kim ) 대한간학회 2016 춘·추계 학술대회 (KASL) Vol.2016 No.1
Aims: Tumor angiogenesis is essential for invasive tumor growth and metastasis. Dickkopf (DKK)-1, an antagonist of Wnt signal, participates in tumor development and progression. This study evaluated whether DKK-1 stimulation increases angiogenesis and endothelial mesenchymal transition. (EnMT) Methods: Human umbilical vein endothelial cells (HUVECs) were stimulated with recombinant DKK-1 or concentrated conditioned medium from human hepatoma cells or DKK-1-transfected 293 cells. Following stimulation, the expression levels of angiogenesis related factors and EnMT related markers were examined by immunoblot assays. In addition, the effect of exogenous DKK-1 on angiogenesis and EnMT were assessed by endothelial cell tube formation assay, cell invasion assay and wound healing assay. Results: Human hepatoma cells such as Hep3B and Huh-7 showed high expression levels of DKK-1, whereas 293 cells and HUVECs showed little or no expression. Increased endothelial cell tube formation and invasiveness were observed in HUVECs treated with either concentrated conditioned medium from DKK-1-overexpressed 293 cells, human hepatoma cells, or recombinant DKK-1. Increased cell motility was also shown in DKK-1-stimulated HUVECs in wound healing assay. Furthermore, the expression level of angiogenesis-related factors including vascular endothelial growth factor receptor 2 and vascular endothelial-cadherin was increased in DKK-1-stimulated HUVECs. In addition, the expression of EnMT markers such as vimentin and Twist was also increased in DKK-1-stimulated HUVECs. Conclusions: Our in vitro data suggest that DKK-1 enhances angiogenic and EnMT properties of HUVECs. Modulation of DKK-1 may shed light on development of novel strategies to control tumor angiogenesis and metastasis.