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임원철,민경미,정덕호,이병무,권영은 대한독성 유전단백체 학회 2011 Molecular & cellular toxicology Vol.7 No.3
DNA microarrays have revolutionized environmental research by enabling the discovery of genomic markers that reflect the toxic effect of various chemicals and by providing information on the underlying mechanisms. Microarray-based toxicogenomics approaches have become a popular tool to investigate potential risks of exposure to various environmental contaminants at the DNA level. Especially,the analysis of microarray data that are generated under various experimental conditions is critically important for validation of biomarkers and, thus, diagnosis and treatment of environmental targets. Presently, we identified commonly regulated genes whose expression level varied upon exposure to volatile organic compounds (VOCs) by performing cross-experimental analysis of public gene expression datasets using the RankProd algorithm. VOCs are chemical contaminants that often exhibit long-term adverse effects upon chronic exposure. Since VOCs are often used in household items and residential buildings, it is important to understand their effect on human health in a more systematic way. This cross-experiment resulted in a valid set of commonly regulated genes. The functional analysis of these differentially expressed genes (DEGs) generated several significantly over-represented Gene Ontology terms and identified metabolic pathways tightly-associated with cancer development. The functional analysis of identified up-regulated genes (RPL27, RPS6, RPS11, RPS27A, AURKA, FNTA,HSP90AB1) revealed concordance with genes related to various respiratory symptoms such as non-small cell lung cancer. The selected commonly regulated diseaserelated genes were also compared with the DEGs identified in previous analysis performed individually for validation of biomarkers.
Germinated Waxy Black Rice Suppresses Weight Gain in High-Fat Diet-Induced Obese Mice
임원철,호진녕,이희섭,조홍연 한국식품영양과학회 2016 Journal of medicinal food Vol.19 No.4
This study was performed to investigate the antiobesity effect of germinated waxy black rice (GWBR) in highfat diet (HFD)-induced obese mice. The mice were divided into a normal diet (ND) group, HFD group, and 2 test groups for 8 weeks: 2.5% GWBR-supplemented (GWBR-2.5) group and 5% GWBR-supplemented (GWBR-5) group. Supplementing with GWBR significantly reduced body weight gain and lipid accumulation in the liver and adipose tissue compared to the HFD control group. Triglyceride (TG), total cholesterol, and low-density lipoprotein-cholesterol levels in serum were decreased by GWBR supplementation, whereas high-density lipoprotein-cholesterol level significantly increased. In addition, mRNA levels of transcriptional factors, such as peroxisome proliferator-activated receptor-γ, CCAAT enhancer-binding protein (C/EBP)-α, C/EBP-β, sterol regulatory element-binding protein-1c, and related genes, including adipocyte fatty acid-binding protein, fatty acid synthase, and lipoprotein lipase, were significantly lower in the GWBR groups. However, lipolytic enzymes, such as hormone-sensitive lipase, adipose TG lipase, and carnitine palmitoyltransferase-1, and uncoupling protein 2 mRNA levels were significantly higher in GWBR-supplemented mice. These results suggest that GWBR exerts antiobesity effects by decreasing lipid accumulation and promoting lipolysis in HFD-induced obese mice.
임원철,Jin-Nyoung Ho,이희섭,조홍연 한국식품과학회 2016 Food Science and Biotechnology Vol.25 No.3
The aim of this study was to investigate the anti-obesity effects of germinated waxy black rice (GWBR) extract in 3T3-L1 adipocytes. The inhibitory effect of GWBR extract against adipocyte differentiation was evaluated using Oil Red O staining and glycerol-3-phosphate dehydrogenase (GPDH) assay. GWBR extract inhibited adipocyte differentiation, but was not found to elicit any cytotoxicity. The mRNA levels of adipogenic transcriptional factors such as C/EBP-α and -β, PPAR-γ, and SREBP-1c, as well as adipogenic enzymes, including aP2, LPL, and FAS were significantly downregulated by treatment with GWBR extract compared to untreated control cells. However, mRNA levels of lipolytic genes such as HSL and ATGL, β-oxidation related genes CPT1, and UCP2 involved in thermogenesis were significantly up-regulated by treatment with GWBR extract. These data suggest that GWBR extract may be a potential functional food, and may have pharmacological applications in both the prevention and treatment of obesity.
임원철 ( Won Churl Lim ),김해성 ( Hae Sung Kim ),한상길 ( Sang Kil Han ),이근수 ( Geun Su Lee ),강기춘 ( Ki Choon Kang ),표형배 ( Hyeong Bae Pyo ) 대한화장품학회 2011 대한화장품학회지 Vol.37 No.1
점화효과란 연결된 일련의 사건에 의해서 고정관념과 같은 지식 구조가 일시적으로 활성화되는 현상을 말한다. 그렇게 활성화된 지식구조는 사람들의 판단이나 행동에 영향을 미치게 된다. 최근에는 고정관념과 같은 효과에 대한 연구로서 점화효과에 대한 연구들이 다양하게 이루어지고 있다. 이러한 연구들은 전혀 상관이 없어 보이는 어떤 행동이 일어나기 이전에 준 정보에 의해서 의도하지 않은, 혹은 부정적이거나 긍정적인 영향을 받는다는 결과들을 보고하고 있다. 또 다른 연구들은 아주 미미한 관련된 사건이나 물건의 존재 하에서 행동이나 정서적인 반응의 변화가 유발될 수 있음을 보여주고 있다. 이번 연구의 목적은 다양한 점화효과 연구 사례들을 살펴보고, 그 결과들을 바탕으로 하여 향에 의하여 정서의 변화나 행동의 변화가 유발될 수 있는지를 측정해 보려는 데 있다. 이번 연구에서는 피실험자들이 의식하지 못하는 수준에서 향을 맡게 한 후 화장품 품질 평가를 하게 할 경우 그들의 판단에 향이 어떠한 영향을 미치는지를 평가하였다. 향 조건은 무취 조건, 향기(일반적인 화장품 향) 조건, 악취 조건(암모니아와 트리에틸 아민의 배합)으로 하였다. 실험결과 각 조건별로 화장품 품질 평가에 큰 영향을 미치지 않음을 확인하였다. Priming refers to the incidental activation of knowledge structures, such as trait concepts and stereotypes, by the current situational context. Many studies have shown that the recent use of a trait construct or stereotype, even in an earlier or unrelated situation, carries over for a time to exert an unintended, passive influence on the interpretation of behavior. Recent researches have shown that attitudes and other affective reaction can be triggered automatically by the mere presence of relevant objects and events. So assuming that behavioral responses to fragrance are also represented mentally, they should also be capable of becoming automatically activated, by the same principles that govern the development of automaticity of other representations. On the basis of this theory, this study examined the effect of fragrance on the quality of cosmetic products.