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마우스의 BCG감염이 R.tsutsugamushi의 증식에 미치는 영향
김인재,전창덕,홍영권,정현택,이복수,장우현,김익상,박석돈 대한감염학회 1993 감염 Vol.25 No.2
It has recently been reported that gamma-inteferon(INF-r) and tumor necrosis factor(TNF) or lipopplysaccharide(LPS) activate macrophages to kill intracellular parasites by means of nitrc oxide (NO). It is now generally accepted that NO is the endothelium-derived relaxing factor, and that it also paticipates in the regulation of the nervous and immune systems. Activated macrophages form NO?? and NO?? from the terminal guanidino nitrogen atoms of L-arginine by the process now known to proceed via the formation of NO. This pathway is inhibited by the L-arginine analog(N?? monomethyl-L-arginine; N??MMA), forms L-citrulline as a co-product and is responsible for the cytotoxic action of macrophages. In this study, the authors found that INF-r and/or LPS induced murine macrophages to kill Rickettsiae tsutsugamushi in vitro and macrophages from BCG-infected mice got the host resistance against R.tsutsugamushi in vitro as well as in vivo. The rickettsicidal effect induced by the combination of INF-r and/or LPS induced mice got the host resistance against R.tsutsugamushi in vitro as well as in vivo. The rickettsicidal effect induced by the combination of INF-r and/or LPS can also be completely inhibited by N??MMA, leading to a dose-dependent inhibition of NO production. These datademonstrate that INF-r and/or LPS as well as BCG-activated macrophages mediate host resistance aganist R.tsutsugamushi infection through NO, which is necessary for the intracellular parasite.
꽃다발 유형과 화훼장식가의 경력이 꽃다발의 제작시간에 미치는 영향
이경숙 ( Kyung Suk Lee ),한태호 ( Tae Ho Han ),박윤점 ( Yun Jum Park ),김현주 ( Hyun Ju Kim ),임명희 ( Myung Hee Im ),허북구 ( Buk Gu Heo ) 한국화예디자인학회 2007 한국화예디자인학 연구 Vol.17 No.-
This study was conducted to gather the basic data on the effective manufacture of floral decoration, the division of labor, and the calculation of wages for floral decorators. We have also investigated into the effects of the bouquet types and the floral decorator`s career intended for floral decorators in Gwangju and Jeonnam districts on the necessary time to make a bouquet. Manufacturing processes of European bouquets were classified into 7 stages. And the total required time to make that were 41.4 to 76.8 minutes. Western bouquets had a 7-stage manufacturing process. And 37.7 to 47.4 minutes were needed to make that. Floral decorator`s career and manufacturing the bouquet were mutually related. The longer the floral decorator`s career, the shorter the necessary time to make a bouquet. Consequently it was estimated that above results could be needed for the effective manufacture of floral decoration, the division of labor, and the calculation of wages for floral decorators.