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직무불안정성이 정서적 조직몰입과 직무성과에 미치는 영향: 조직지원인식의 조절효과를 중심으로
임도화,김문중 한국서비스경영학회 2019 서비스경영학회지 Vol.20 No.3
In this study, we develop a conceptual model of the relationship between job insecurity and job performance, which is mediated by affective organizational commitment and moderated by perceived organizational support in domestic financial institutions that experienced downsizing. A cross-sectional study with 678 questionnaires obtained from employees working at domestic financial institutions found that job insecurity negatively affects job performance, which is a relationship that is partially mediated by affective organizational commitment. Moreover, a high level of perceived organizational support has been shown to enhance the effects of the relationship between job insecurity and affective organizational commitment. To minimize the negative effects of job insecurity on the active employees of downsizing strategy, an affective intervention is required by developing a more realistic communications in terms of workers' expectations toward the organization.
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이서영,김영남,임도화,조수한,김지연,김정현,김권일 한국통합생물학회 2021 Animal cells and systems Vol.25 No.3
Fetal growth restriction (FGR) is the failure of the fetus toachieve its genetically determined growth potential, which increasesrisks for a variety of genetic diseases, such as type 2 diabetes mellitus, coronary artery disease, and stroke, during the lifetime. The dysregulation of DNA methylationis known to interact with environmental fluctuations, affect gene expressions comprehensively, and be fatal to fetus development in specific cases. Therefore, we set out to find out epigenetic and transcriptomic alterations associated with FGR development. We found a set of differentially expressed genes associated with differentially methylated regions in placentae and cord blood samples. Using dimensional reduction analysis, the expression and methylation variables of the epigenetically altered genes classified the FGR samples from the controls. These genes were also enriched in the biological pathways such as metabolism and developmental processes related to FGR. Furthermore, three genes of INS, MEG3, and ZFP36L2 are implicated in epigenetic imprinting, which has been associated with FGR. These results strongly suggest that DNA methylation is highly dysregulated during FGR development, and abnormal DNA methylation patterns are likely to alter gene expression.
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용혈이 Vitamin $B_{12}$ / Folic acid 검사 결과에 미치는 영향
김미숙,조윤교,임도화,서소연,Kim, Mi-Sook,Cho, Youn-Kyo,Im, Do-Hw,Seo, So-Yeon 대한핵의학기술학회 2008 핵의학 기술 Vol.12 No.1
배경: Vitamin $B_{12}$ 및 Folic acid는 모두 수용성 비타민의 일종으로 생체 내에서 보조 효소로서의 작용을 가지고 있지만 특히 세포핵의 DNA 합성에 관여하고 있다. 주로 거대 적아구성 빈혈의 감별 진단과 임신 중 엽산의 저장을 평가하기 위해 측정한다. 용혈 혈청은 혈구 중의 엽산과 비타민 $B_{12}$가 용출하기 때문에 사용할 수 없다고 알려져 있으나 수탁 검사기관인 본원의 특성상 이 내용을 충실히 따르기에는 어려운 경우가 있다. 이에 용혈의 정도가 검사 결과치에 어느 정도 영향을 미치는가에 대해 알아보고자 검사를 시행해 보았다. 방법: 용혈되지 않은 검체를 대조군으로 하고 기계적으로 용혈을 일으켜 용혈 정도에 따라 A, B, C그룹으로 분리하여 용혈 검체를 그룹별 각각 10개씩 준비한다. 경쟁반응 원리인 M사의 Vitamin $B_{12}$ [$^{57}Co$]/Folate [$^{125}I$] 시약으로 검사를 실시한다. 결과: Vitamin $B_{12}$는 검체의 용혈이 결과 값에 큰 영향을 미치지 않았다. 하지만 Folic acid의 경우에는 용혈의 정도에 따라 값이 증가 하였으며, 심하게 용혈 된 경우 모두 표준곡선의 최고치의 값(20 ng/ml 이상)을 확인할 수 있었다. 고찰: 수탁기관인 본원에서는 Vitamin $B_{12}$ 및 Folic acid 검사 의뢰 병원에 검체의 용혈이 검사 결과에 미치는 영향과 검체의 용혈을 막기 위해 채혈 시 주의할 점들을 홍보하고, 분리, 보관 시 세심한 주의를 기울여야 할 것이다. 위의 결과에서 보았듯이 용혈된 검체로 Folic acid검사를 해서는 안 되며 Vitamin $B_{12}$ 또한 결과 값에는 큰 영향을 미치지는 않지만 용혈에 주의할 필요가 있다. Purpose: Vitamin $B_{12}$ and folic acid are type of water-soluble vitamin and those work as a secondary vital enzyme, but especially those are involved in the nuclear DNA synthesis. Those are mainly measured in order to diagnose megaloblastic anemia and to assess the storage of folic acid during pregnancy. It is generally known that the hemolyzed serum is useless for folic acid and vitamin $B_{12}$, but it is not easy to abide by this information because our lab (Samkwang Medical Laboratories) is reference laboratory. We tested how much the extent of hemolyzed serum had influence on the results. Materials and Method: We performed the tests of vitamin $B_{12}$, folic acid. For the hemolysis effect study, we used 40 cases. According to the level of A, B and C groups, each group had 10 samples which were mechanically hemolyzed serum. Results: Hemolysis did not affect the vitamin $B_{12}$ results. However in case of folic acid, the value increased according to the degree of hemolysis. And severe hemolyzed cases had the highest value (greater than 20 ng/ml). Conclusions: Preventing the hemolysis, it has to be informed that blood-collecting, separation and storage are performed more carefully. As you see from the above results, hemolyzed serum is not proper for folic acid test, and hemolysis does not affect the results of vitamin $B_{12}$. However, for the more accurate results, it is necessary to avoid hemolysis.
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