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Novel Associations between Related Proteins and Cellular Effects of High-Density Lipoprotein
Seungbum Choi,Yae Eun Park,Eun Jeong Cheon,Kyeong Yeon Kim,Miso Kim,Soo-jin Ann,Hye-Min Noh,Jae Ho Lee,Chan-Joo Lee,Seung-Taek Lee,Cheolju Lee,Ji Eun Lee,Sang-Hak Lee 대한심장학회 2020 Korean Circulation Journal Vol.50 No.3
Background and Objectives: Recent studies have examined the structure-function relationship of high-density lipoprotein (HDL). This study aimed to identify and rank HDL-associated proteins involved in several biological function of HDL. Methods: HDLs isolated from 48 participants were analyzed. Cholesterol efflux capacity, effect of HDL on nitric oxide production, and vascular cell adhesion molecule-1 expression were assessed. The relative abundance of identified proteins in the highest vs. lowest quartile was expressed using the normalized spectral abundance factor ratio. Results: After adjustment by multiple testing, six proteins, thyroxine-binding globulin, alpha-1B-glycoprotein, plasma serine protease inhibitor, vitronectin, angiotensinogen, and serum amyloid A-4, were more abundant (relative abundance ratio ≥2) in HDLs with the highest cholesterol efflux capacity. In contrast, three proteins, complement C4-A, alpha-2-macroglobulin, and immunoglobulin mu chain C region, were less abundant (relative abundance ratio <0.5). In terms of nitric oxide production and vascular cell adhesion molecule-1 expression, no proteins showed abundance ratios ≥2 or <0.5 after adjustment. Proteins correlated with the functional parameters of HDL belonged to diverse biological categories. Conclusions: In summary, this study ranked proteins showing higher or lower abundance in HDLs with high functional capacities and newly identified multiple proteins linked to cholesterol efflux capacity.
고장검출 가능한 N.O / N.C Switch Module개발
최승범(Seungbum Choi) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
Switch is just a component which makes circuit wire would be opened and shorted for controlling signal and current. However, on the system side, it is one of the important parts having conditions to make the system operate properly. Only a few systems have fault detecting function, because realistic limitations like cost and complexity of the circuits are bound to follow. In this paper, fault detecting N.O / N.C Switch Modules were introduced. By adding resistors on the switch circuit, the systems show different voltage levels in the various switch conditions such as normal, open circuit or short to circuit. It make ECU can judge that the switch condition is fault or not. As a result, the modules allow the system to be more flexible and economical as well as to be more stable and reliable.