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Busan, South Korea

Park J.-S.,Busan Womens College | Lee S.-I.,Keimyung College | Park I.,Dong - A University
Journal of the Korean Society of Food Science and Nutrition

The effects of white bread supplemented with konjac glucomannan on diet-induced obesity in rats were investigated. Four groups of male Sprague-Dawley rats were examined: a non-obese control group (NC), an obese high fat diet group (HF), an obese high fat diet group given bread supplemented with 10% konjac gluco-mannan (KGM1) and an obese high fat diet group given bread supplemented with 20% konjac glucomannan (KGM2). The daily weight gain of the KGM1 group increased slightly and decreased in the KGM2 group com-pared to the HF group. The serum triglycerides, total lipid, total cholesterol, and HDL-cholesterol increased in the HF compared to the NC group, whereas they decreased in KGM1 and KGM2 groups. After having this experimental diet for 6 weeks, the body weight in KGM1 and KGM2 groups decreased compared to the HF group. While the initial Rohrer index was 23.13 in the NC group, and 31.50~32.59 in the HF, KGM1, and KGM2 groups, the index after the experimental diets for 6 weeks was 28.39 in the NC group, 36.88 in the HF group, 33.48 in the KGM1 group and 29.64 in the KGM2 group. The level of body fat increased from 1% to 7.14% in the NC group, from 15.60% to 60.05% in the HF group, and from 10.60% to 10.83% in the KMG1 group, but decreased from 10.45% to 8.20% in the KGM2 group. These results demonstrate that white bread with gluco-mannan is effective in reducing body weight and serum lipids in high fat diet-induced obese rats. Source

Sung B.,Pusan National University | Park S.,Pusan National University | Ha Y.M.,Pusan National University | Kim D.H.,Pusan National University | And 10 more authors.
Geriatrics and Gerontology International

Aim: Many intracellular components have been implicated in the regulation of redox homeostasis, but homeostasis can be unbalanced by reactive species (RS), which also probably contribute to underlying inflammatory processes. Nuclear factor-κB (NF-κB) is a well-known redox-sensitive transcription factor that controls the genes responsible for regulating inflammation. Methods: In the present study, the authors investigated the effect of short-term salicylideneamino-2-thiophenol (SAL-2) administration on the modulation of pro-inflammatory NF-κB through redox regulation in aged rats. In addition, we compared the effects of SAL-2 and caloric restriction (CR) on inflammation and redox balance. The subjects were 24-month-old (old) Fischer 344 rats administered SAL-2 (10mg/kg/day) by dietary supplementation or placed on a 30% restricted diet for 10days, and 6-month-old (young) rats fed ad libitum for 10days. Results: We found that NF-κB activation and the expressions of its related genes (vascular cell adhesion molecule-1, intercellular adhesion molecule-1, cyclooxygenase-2 and inducible nitric oxide synthase) were suppressed by SAL-2 supplementation in old CR rats to the levels observed in young rats. In addition, our molecular studies showed that the inhibitory effect of SAL-2 on the activation of NF-κB was mediated by the ability of SAL-2 to block the nuclear translocations of cytosolic thioredoxin and redox factor-1. Conclusion: These findings strongly indicate that SAL-2 stabilizes age-related redox imbalance and modulates the signal transduction pathway involved in the age-associated molecular inflammatory process. © 2014 Japan Geriatrics Society. Source

Yokozawa T.,University of Toyama | Satoh A.,University of Toyama | Kim Y.J.,Busan Womens College
Bioscience, Biotechnology and Biochemistry

Proanthocyanidin (a persimmon-peel extract) is known to have potent antioxidative effects, but its protective action specifically against cellular damage has not been fully explored. In this work, we investigated the protective property of proanthocyanidin against cellular oxidative stress with an experimental model, H2O2-exposed human diploid fibroblasts (HDFs). To investigate the proposed underlying beneficial actions of proanthocyanidin as to cellular injury induced by H2O2, several major biochemical parameters were determined, including estimation of total reactive species (RS) generation, antioxidant enzyme activities, reduced glutathione (GSH)/oxidized glulathione (GSSG) ratio, and mitochondrial membrane potential. The results indicate that proanthocyanidin reduced total RS generation while enhancing the activities of catalase and glutathione reductase and the GSH/GSSG ratio. Additionally, proanthocyanidin was found to protect against mitochondrial membrane damage in HDFs treated H2O 2. Based on these results, we conclude that proanthocyanidin has strong protective effects against cellular damage to several key cellular functions by suppressing oxidative stress in H2O2-treated HDFs. Source

Jee Y.-J.,Kyungnam University | Kim K.-N.,Busan Womens College
Information (Japan)

The purpose of this study was to investigate fee prevalence of attention deficit hyperactivity disorder (ADHD) among elementary school children in South Korea and identify influencing factors of ADHD tendency. A self-report survey was conducted upon 4th-6th grade elementary schoolchildren in South Korea. One hundred and fifty five elementary schoolchildren were included in the study. Statistical analysis was performed using SPSS WIN 18.0 program. The average depression score of the participants was 16.41, which indicates moderate level of ADHD. Our findings showed that 43.2% of the subjects had a ADHD tendency. Significant predictors of ADHD tendency were 'food intake patterns', 'body mass index', and 'fast food intake'. The findings of the present study suggest that special concerns should be made for early detection of ADHD in elementary school children. In particular, specific strategies focusing on food intake pattern, body mass index, and fast food intake may effectively reduce the risk of ADHD in elementary school children. ©2015 International Information Institute. Source

Kim D.H.,Pusan National University | Chung J.H.,Pusan National University | Yoon J.S.,Pusan National University | Ha Y.M.,Pusan National University | And 7 more authors.
Journal of Ginseng Research

Ginsenoside Rd is a primary constituent of the ginseng rhizome and has been shown to participate in the regulation of diabetes and in tumor formation. Reports also show that ginsenoside Rd exerts anti-oxidative effects by activating anti-oxidant enzymes. Treatment with ginsenoside Rd decreased nitric oxide and prostaglandin E2 (PGE2) in lipopolysaccharides (LPS)-challenged RAW264.7 cells and in ICR mouse livers (5 mg/kg LPS; LPS + ginsenoside Rd [2, 10, and 50 mg/kg]). Furthermore, these decreases were associated with the down-regulations of inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2 and of nuclear factor (NF)-κB activity in vitro and in vivo. Our results indicate that ginsenoside Rd treatment decreases; 1) nitric oxide production (40% inhibition); 2) PGE2 synthesis (69% to 93% inhibition); 3) NF-κB activity; and 4) the NFκB-regulated expressions of iNOS and COX-2. Taken together, our results suggest that the anti-inflammatory effects of ginsenoside Rd are due to the down-regulation of NF-κB and the consequent expressional suppressions of iNOS and COX-2. © The Korean Society of Ginseng. Source

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