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Choi H.J.,Pusan National University | Kim H.-G.,Pusan National University | Kim J.,Pusan National University | Park S.-H.,Pusan National University | And 9 more authors.
Toxicology Letters | Year: 2014

This type of damage is a clinical feature of inflammatory bowel disease (IBD) in humans. In the present study, the effects of CGN on pro-apoptotic responses associated with macrophage inhibitory cytokine 1 (MIC-1) regulation in human enterocytes were evaluated. CGN up-regulated the expression of MIC-1 that promoted epithelial cell apoptosis. Although MIC-1 induction was dependent on pro-apoptotic p53 protein, the pro-survival protein activating transcription factor 3 (ATF3) was negatively regulated by p53 expression. However, MIC-1 enhanced the expression of the pro-survival protein ATF3 in enterocytes exposed to CGN. Functionally, MIC-1-mediated epithelial cell apoptosis was counteracted by the pro-survival action of ATF3 in response to CGN exposure. These findings demonstrated that the counterbalance between MIC-1 and ATF3 is critical for deciding the fate of enterocytes under the food chemical stress. © 2014 Elsevier Ireland Ltd. Source

Moon Y.,Pusan National University | Moon Y.,Immunoregulatory Therapeutics Group in Brain Busan 21 Project
Mediators of Inflammation | Year: 2014

Ribosomal inactivation damages 28S ribosomal RNA by interfering with its functioning during gene translation, leading to stress responses linked to a variety of inflammatory disease processes. Although the primary effect of ribosomal inactivation in cells is the functional inhibition of global protein synthesis, early responsive gene products including proinflammatory cytokines are exclusively induced by toxic stress in highly dividing tissues such as lymphoid tissue and epithelia. In the present study, ribosomal inactivation-related modulation of cytokine production was reviewed in leukocyte and epithelial pathogenesis models to characterize mechanistic evidence of ribosome-derived cytokine induction and its implications for potent therapeutic targets of mucosal and systemic inflammatory illness, particularly those triggered by organellar dysfunctions. © 2014 Yuseok Moon. Source

Kim D.-H.,Pusan National University | Yu H.S.,Pusan National University | Yu H.S.,Immunoregulatory Therapeutics Group in Brain Busan 21 Project
PLoS ONE | Year: 2014

Although health education has proven to be cost-effective in slowing the spread of enterobiasis, assessments of the effectiveness of health education to reduce infectious diseases specifically in children are rare. To evaluate the effect of health education on knowledge, preventative practices, and the prevalence of enterobiasis, 319 children from 16 classes were divided into experimental and control groups. Data were collected from May 2012 to March 2013. A 40-minute in-class talk was given once in the experimental group. There were significant differences over the time in the mean scores for children's knowledge of Enterobius vermicularis infection in the intervention group compared to the control group (p<0.001). After the educational session, the score for knowledge about E. vermicularis infection increased from 60.2±2.32 to 92.7±1.19 in the experimental group; this gain was partially lost 3 months later, decreasing to 83.6±1.77 (p<0.001). Children's enterobiasis infection prevention practice scores also increased, from 3.23±0.27 to 3.73±0.25, 1 week after the educational session, a gain that was partially lost at 3 months, decreasing to 3.46±0.36 (p<0.001). The overall E. vermicularis egg detection rate was 4.4%; the rates for each school ranged from 0% to 12.9% at screening. The infection rate at 3 months after the treatment sharply decreased from 12.3% to 0.8% in the experimental group, compared to a decrease from 8.5% to 3.7% in the control group during the same period. We recommend that health education on enterobiasis be provided to children to increase their knowledge about enterobiasis and improve prevention practices. © 2014 Kim, Yu. Source

Lee M.H.,Pusan National University | Kim D.-H.,Pusan National University | Yu H.S.,Pusan National University | Yu H.S.,Immunoregulatory Therapeutics Group in Brain Busan 21 Project
Evidence-based Complementary and Alternative Medicine | Year: 2013

This study was conducted to evaluate the effects of guided imagery on stress and fatigue in patients undergoing radioactive iodine therapy after thyroidectomy in Korea. Participants were 84 individuals (44 for experimental group and 40 for control group) with thyroid cancer. The experimental group listened to a guided imagery CD once a day for 4 weeks. Global Assessment of Recent Stress and Revised Piper Fatigue Scale were self-administered, and heart rate variability was measured at three time points; prior to intervention (T1), just before intervention (T2) and 1 week later after intervention (T3). Heart rate variability was consisted of Standard Deviation of all NN interval (SDNN), Total Power (TP), Low Frequency (LF), and High Frequency (HF). There were significant decreases in stress (F = 28.45, P<0.001) and fatigue (F = 26.17, P<0.001) over time in the experimental group compared to the control group. Heart rate variability changed over time in the experimental group relative to the control group; SDNN (F = 6.68, P = 0.002), TP (F = 5.29, P=0.006), LF (F = 4.58, P = 0.012), and HF (F = 3.71, P=0.026). From the results of this study guided imagery can be recommended as an effective intervention to thyroid cancer patients with stress and fatigue. © 2013 Mi Hye Lee et al. Source

Lee G.-H.,California State University, Chico | Lee J.-E.,Pusan National University | Park M.-K.,Pusan National University | Park M.-K.,Immunoregulatory Therapeutics Group in Brain Busan 21 Project | And 2 more authors.
Cornea | Year: 2016

Purpose: To evaluate adhesion of Acanthamoeba trophozoites to different silicone hydrogel contact lens (SHCL) generations with and without multipurpose contact lens care solution (MPS) treatment. Methods: Acanthamoeba lugdunensis L3a trophozoites were inoculated onto discs trimmed from SHCLs: first generation, Air Optix (Lotrafilcon B) with a plasma surface treatment, second generation, Acuvue Oasys (Senofilcon A), which contains an internal wetting agent (Hydraclear), and third generation, Biofinity (Comfilcon A) with no surface treatment. After 18-hour inoculation, the number of adherent trophozoites on SHCLs was counted as thecontrol under phase contrast microscopy. The effects of the 3 different MPSs, Opti-Free Express, ReNu Fresh, and Biotrue, soaking SHCLs for 6 hours, on Acanthamoeba adhesion were analyzed. Scanning electron microscopic examination was performed for assessment of Acanthamoeba attached on the lens surface. Results: Acanthamoeba trophozoites showed greater adhesion to Air Optix than to Acuvue Oasys and Biofinity (P , 0.05). On Air Optix and Acuvue Oasys, the number of adherent Acanthamoeba was significantly reduced compared with the control after treatment with Opti-Free Express (P , 0.05), but not significantly reduced by treatment with ReNu Fresh and Biotrue (P . 0.05). Acanthamoeba did not adhere to Biofinity regardless of MPSs treatment. Attachment of the acanthopodia of Acanthamoeba on the curved ridge of the Air Optix lens surface was observed. Conclusions: Acanthamoeba showed greater affinity for the firstgeneration SHCL and seemed to be more attached on SHCLs with more ridges. MPS with myristamidopropyl dimethylamine reduced the adhesion rate. Copyright © 2016 Wolters Kluwer Health, Inc. All rights reserved. Source

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