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Ansan, South Korea

Chun O.K.,University of Connecticut | Chung C.E.,Ansan College | Wang Y.,University of Connecticut | Padgitt A.,Michigan State University | Song W.O.,Michigan State University
Nutrients | Year: 2010

This study was designed to document changes in total sugar intake and intake of added sugars, in the context of total energy intake and intake of nutrient categories, between the 1970s and the 1990s, and to identify major food sources contributing to those changes in intake. Data from the NHANES I and III were analyzed to obtain nationally representative information on food consumption for the civilian, non-institutionalized population of the U.S. from 1971 to 1994. In the past three decades, in addition to the increase in mean intakes of total energy, total sugar, added sugars, significant increases in the total intake of carbohydrates and the proportion of carbohydrates to the total energy intake were observed. The contribution of sugars to total carbohydrate intake decreased in both 1-18 y and 19+ y age subgroups, and the contribution of added sugars to the total energy intake did not change. Soft drinks/fluid milk/sugars and cakes, pastries, and pies remained the major food sources for intake of total sugar, total carbohydrates, and total energy during the past three decades. Carbonated soft drinks were the most significant sugar source across the entire three decades. Changes in sugar consumption over the past three decades may be a useful specific area of investigation in examining the effect of dietary patterns on chronic diseases. © 2010 by the authors; licensee MDPI, Basel, Switzerland.

Park D.-H.,Catholic University of Korea | Park K.,Catholic University of Korea | Park J.,Catholic University of Korea | Park H.-H.,Ansan College | And 6 more authors.
International Journal of Laboratory Hematology | Year: 2011

Introduction: We determined the utility of leukocyte cell population data (CPD) for the screening of sepsis and fungemia. Methods: Blood culture-positive CBC samples, 117 bacteremia and 27 fungemia, and 134 CBC samples from healthy controls were analyzed using the DxH800 and CPD of neutrophils, lymphocytes, and monocytes were analyzed. Immature granulocytes (IG) were counted using Sysmex XE-2100. Results: The neutrophils and monocytes volume were increased significantly, and the neutrophils light scattering values were reduced significantly in the sepsis samples. ROC curves evidenced excellent sensitivity in the lymphocyte SD parameters (sensitivity 78-89%, specificity 78-87%), monocytes volume (at 177.5, sensitivity 88.2% specificity 87.3%), and monocytes volume SD (at 22.16, sensitivity 93.1% specificity 91.0%) for sepsis. The IG value was significantly higher in sepsis and the ROC curve evidenced a sensitivity of 82.8% and a specificity of 90.8% for sepsis. Only lower angle light scatter of lymphocytes SD value evidenced good sensitivity and specificity in the discrimination of fungemia from bacteremia (sensitivity 74.1%, specificity 72.4% at 12.6). Conclusion: Many of the leukocyte CPD have been identified as useful parameters of sepsis. Hopefully, these parameters can ultimately be incorporated into a decision rule for the screening of sepsis samples and to discriminate fungemia from bacteremia. © 2011 Blackwell Publishing Ltd.

Chun O.K.,University of Connecticut | Floegel A.,University of Connecticut | Chung S.-J.,Kookmin University | Chung C.E.,Ansan College | And 2 more authors.
Journal of Nutrition | Year: 2010

The importance of antioxidants in reducing risks of chronic diseases has been well established; however, antioxidant intakes by a free-living population have not yet been estimated adequately. In this study, we aimed to estimate total antioxidant intakes from diets and supplement sources in the U.S. population. The USDA Flavonoid Database, food consumption data, and dietary supplement use data of 8809 U.S. adults aged≥19 y in NHANES 1999-2000 and 2001-2002 were used in this study. Daily total antioxidant intake was 208 mg vitamin C (46 and 54% from diets and supplements, respectively), 20 mg α-tocopherol (36 and 64), 223 μg retinol activity equivalents carotenes (86 and 14), 122 μg selenium (89 and 11), and 210 mg flavonoids (98 and 2). Antioxidant intakes differed among sociodemographic subgroups and lifestyle behaviors. Energy-adjusted dietary antioxidant intakes were higher in women, older adults, Caucasians, nonconsumers of alcohol (only for vitamin C and carotenes), nonsmokers (only for vitamin C, vitamin E, and carotenes), and in those with a higher income and exercise level (except for flavonoids) than in their counterparts (P <0.05). Consumption of fruits, vegetables, and whole grains may be a good strategy to increase antioxidant intake. The possible association between antioxidant intake and the prevalence of chronic diseases should be investigated further. © 2010 American Society for Nutrition.

Lee W.,Catholic University of Korea | Kim J.-H.,Catholic University of Korea | Sung I.K.,Catholic University of Korea | Park S.K.,Catholic University of Korea | And 8 more authors.
Clinical Chemistry and Laboratory Medicine | Year: 2014

Background: In the Retic channel of DxH 800 (Beckman Coulter), the red blood cells (RBCs) resistant to hemoglobin clearing are counted as unghosted cells (UGCs). The aim of this study was to evaluate that the UGC is a surrogate marker for both the detection and counting of target cells. Methods: In total, 1181 samples including 22 from iron deficiency anemia (IDA) patients, 95 from jaundice, 2 from sickle cell anemia, 3 from thalassemia, 1 cord blood, and 269 from normal controls were analyzed. Slides were prepared from all samples except normal controls and target cells were counted for correlation analysis of target cell counts to UGCs. Results: The normal control samples showed 0.01% (0%-0.01%) UGCs, and the reference range was set at ≤0.02%. The IDA samples showed 0.015% (0.01%-0.03%) UGC count and 0.05% (0%-0.2%) target cell count. The jaundice samples showed 0.98% (0.1%-5.36%) UGC count, and 1.4% (0.1%-7.0%) target cell count. The two sickle cell anemia samples showed 0.41% and 3.74% UGC counts and 0.4% and 11.5% target cell counts. A cord blood sample showed 0.01% UGCs and 0% target cells. The three thalassemia samples showed 0.01%, 1.99%, and 7.82% UGC counts and 0%, 1.4%, and 15.5% target cell counts. The samples showing poikilocytosis other than target cells showed normal UGC count (≤0.02%). The positive predictive value of UGCs was 58.2% (124/213) and the negative predictive value was 96.8% (674/696). The UGC counts were well correlated to the manual target cell counts (r=0.944, p=0.000). Conclusions: This study demonstrates for the first time in the literature that a hematological parameter obtained automatically every time a reticulocyte counting is performed can be used to both screen for the presence of target cells and reliably quantify them. © 2014 by Walter de Gruyter Berlin/Boston.

Oh J.-C.,Ansan College | Yoon S.-J.,Kyonggi University
Behaviour and Information Technology | Year: 2014

There is a growing consensus that the conventional technology acceptance model should be modified and expanded to provide a better understanding of the behaviour related to Internet services. Recognising this need, this study re-evaluates the utility of Venkatesh et al.s [2003. User acceptance of information technology: toward a unified view. MIS Quarterly, 27 (3), 425-478] Unified Theory of Acceptance and Use of Technology (UTAUT) model. First, this study proposes a new modified model of technology acceptance by adding the concepts of trust and flow experience to the original UTAUT model. Second, the study investigates how the model's explanatory power changes for different types of Internet services. For this, this study considers two services - e-learning and online gaming - for their utilitarian and hedonic characteristics, respectively. The results of this study suggest that the proposed model can better explain behavioural intentions towards Internet services than the original model. The two variables - flow experience and trust - contributed to the overall significance of the model. Furthermore, the type of Internet service moderated the effects of the independent variables on behavioural intentions and use behaviour. © 2014 © 2014 Taylor & Francis.

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