Hee Sun Kim

Yeungnam University, Daikyū, Daegu, South Korea

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Publications (110)267.54 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: In this study, crack-closing tests of mortar beams reinforced by shape memory alloy (SMA) short fibers were performed. For this purpose, NiTi SMA fibers with a diameter of 0.965 mm and a length of 30 mm were made from SMA wires of 1.0 mm diameter by cold drawing. Four types of SMA fibers were prepared, namely, straight and dog-bone-shaped fiber and the two types of fibers with paper wrapping in the middle of the fibers. The paper provides an unbonded length of 15 mm. For bending tests, six types of mortar beams with the dimensions of 40 mm × 40 mm × 160 mm (B×H×L) were prepared. The SMA fibers were placed at the bottom center of the beams along with an artificial crack of 10 mm depth and 1 mm thickness. This study investigated the influence of SMA fibers on the flexural strength of the beams from the measured force- deflection curves. After cracking, the beams were heated at the bottom by fire to activate the SMA fibers. Then, the beams recovered the deflection, and the cracks were closed. This study evaluated crack-closing capacity using the degree of crack recovery and deflection-recovery factor. The first factor is estimated from the crack-width before and after crack-closing, and the second one is obtained from the downward deflection due to loading and the upward deflection due to the closing force of the SMA fibers.
    Smart Materials and Structures 01/2015; 24(1). · 2.45 Impact Factor
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    ABSTRACT: Although the executive function subtests of the Cambridge Neuropsychological Test Automated Battery (CANTAB) have been used to assess cognitive function in diverse psychiatric illnesses, few studies have verified the validity of this battery for Korean psychiatric patients. Therefore, this preliminary study evaluated the construct and concurrent validity of the executive function subtests of the CANTAB for Korean psychiatric patients by comparing it with subtests of the Computerized Neuropsychological Test (CNT).
    Psychiatry investigation 10/2014; 11(4):394-401. · 1.15 Impact Factor
  • Hye Young Kim, Hee Sun Kim
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    ABSTRACT: An anti-inflammatory cytokine, interleukin-10 (IL-10) exerts inhibitory effects on vascular inflammation. Chemokines promote vascular inflammation and play a pathogenic role in the development and maintenance of hypertension. However, chemokine CCL5 has down-regulatory effects on angiotensin II (Ang II)-induced hypertensive mediators. In the present study, IL-10 increased CCL5 expression and attenuated Ang II-induced CCL5 inhibition significantly in vascular smooth muscle cells (VSMCs) from spontaneously hypertensive rats (SHR), whereas TGF-β had no effect on CCL5 expression or Ang II-induced CCL5 inhibition. Increased CCL5 expression due to IL-10 was mediated mainly through AT2 R activation. Additionally, IL-10 increased activation of AMP-activated protein kinase (AMPK), which further mediated the up-regulatory effect of IL-10 on CCL5 expression. Attenuation of Ang II-induced CCL5 inhibition by IL-10 was associated with suppression of NF-кB activation, and IL-10 inhibited both Ang II-induced IкB-α and IкB-β degradation in SHR VSMCs. Moreover, IL-10 partially mediated the inhibitory effects of CCL5 on Ang II-induced 12-lipoxygenase (LO) and endothelin (ET)-1 expression in SHR VSMCs. Taken together, this study provides novel evidence that IL-10 plays an up-regulatory role in the anti-hypertensive activity of CCL5 in SHR VSMCs.
    Cytokine 07/2014; · 2.87 Impact Factor
  • Hye Young Kim, Hye Ju Cha, Hee Sun Kim
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    ABSTRACT: AMP-activated protein kinase (AMPK) activation plays a central role in cellular metabolic homeostasis. Although AMPK is known for its roles in energy homeostasis, numerous recent studies have suggested broader protective roles in inflammation and hypertension. Chemokine CCL5 has shown down-regulatory effects on angiotensin II (Ang II)-induced hypertensive mediators as well as VSMCs proliferation in spontaneously hypertensive rats (SHR) VSMCs. In the present study, we investigated the relationship between CCL5 and AMPK in the anti-hypertensive effects of CCL5 in SHR VSMCs. CCL5 increased AMPK phosphorylation and attenuated Ang II-induced AMPK inhibition. AMPK activation induced by CCL5 was mediated mainly through the AT2 R pathway. Activation of dimethylarginine dimethylaminohydrolase (DDAH)-1 by CCL5 resulted in AMPK activation as well as attenuation of Ang II-induced AMPK inhibition. In addition, AMPK activation induced by CCL5 was partially responsible for the inhibitory effects of CCL5 on Ang II-induced 12-lipoxygenase (12-LO) and endothelin (ET)-1 expression, and the inhibitory effect of CCL5 on Ang II-induced VSMCs proliferation was also mediated via AMPK activation in SHR VSMCs. In conclusion, CCL5 induces activation of AMPK via DDAH-1 activity in SHR VSMCs, and activation of AMPK is partially responsible for the inhibitory effects of CCL5 on Ang II-induced hypertensive mediators. These results suggest that activation of AMPK by CCL5 potentially expands the anti-hypertensive role of CCL5 in SHR VSMCs.
    Cytokine 06/2014; · 2.87 Impact Factor
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    The Korean Journal of Internal Medicine 01/2014; 29(1):123-5.
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    ABSTRACT: The purpose of this study is to implement an evidence utilization project using an audit and feedback approach to improve cancer pain management. A three-phased audit and feedback approach was used. A 46-bed oncology nursing unit in the university's cancer centre was selected as a research site. Nursing records extracted from 137 patients (65 for the baseline assessment and 72 for the follow-up audit) were used to examine nurse compliance with four audit criteria derived from best practice guidelines related to the assessment and management of pain. We observed a significant improvement in compliance from baseline to follow-up for the following criteria: documenting the side effects of opioids (2-83%), use of a formalized pain assessment tool (22-75%), and providing education for pain assessment and management to patients and caregivers (0-47%). The audit and feedback method was applicable to the implementation of clinical practice guidelines for cancer pain management. Leadership from both administrative personnel and staff nurses working together contributes to the spread of an evidence-based practice culture in clinical settings. As it was conducted in a single oncology nursing unit and was implemented over a short period of time, the results should be carefully interpreted.
    International Journal of Nursing Practice 09/2013; · 0.54 Impact Factor
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    ABSTRACT: In South Korea, health check-ups are readily accessible to the public. We aimed to compare the prevalence of upper gastrointestinal (GI) and lower GI diseases in Korean Americans and native Koreans to determine differences and risk factors. In total, 1,942 subjects who visited Gangnam Severance Hospital from July 2008 to November 2010 for a health check-up were enrolled. Basic characteristics and laboratory data for the subjects were collected. Esophagogastroduodenoscopy and colonoscopy were performed. In total, 940 Korean Americans (group 1) and 1,002 native Koreans (group 2) were enrolled. The overall prevalence of GI diseases for each group (group 1 vs group 2) were as follows: reflux esophagitis (RE) (9.65% vs 7.9%), gastric ulcer (2.8% vs 3.4%), duodenal ulcer (2.3% vs 3.6%), gastric cancer (0.4% vs 0.3%), colorectal polyp (35.9% vs 35.6%), colorectal cancer (0.5% vs 0.5%), and hemorrhoids (29.4% vs 21.3%). The prevalence of hemorrhoids was significantly higher in group 1 than in group 2 (p=0.001). In the multivariable analysis of group 1, male sex, age over 50 years, hypercholesterolemia and hypertriglyceridemia predicted colorectal polyps. Male sex and high fasting glucose levels were associated with RE. Our study showed that the prevalence of GI diseases (except hemorrhoids) in Korean Americans was similar to that observed in native Koreans. Therefore, the Korean guidelines for upper and lower screening endoscopy may be applicable to Korean Americans.
    Gut and liver 09/2013; 7(5):539-45. · 1.49 Impact Factor
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    ABSTRACT: Background/Aims: Current international guidelines recommend colorectal cancer screening for average-risk people over 50 years of age. Accordingly, we aimed to estimate the prevalence of colorectal neoplasms in all age groups and evaluate associated risk factors. Methods: Data of 14,932 subjects who underwent colonoscopy from July 2006 to January 2012 at Health Promotion Center, Gangnam Severance Hospital (Seoul, Korea) as part of a health check-up were reviewed retrospectively. Results: The overall prevalence of colorectal neoplasms and adenoma were 34.6% and 25.3%, respectively. Colorectal adenoma was found in 3.2%, 13.0%, 21.7%, 33.8%, 44.0%, 50.5%, and 54.2% of subjects under 30 years, 30-39 years, 40-49 years, 50-59 years, 60-69 years, 70-79 years, and over 80 years of age (trend p<0.0001). Independent predictors of colorectal adenoma included male gender (OR 2.38, 95% CI 2.084-2.718), positive occult blood (2.266, 1.761-2.917), positive serology of Helicobacter pylori (1.253, 1.114-1.409) and hypertriglyceremia (1.267, 1.065-1.508). Compared to the 30-39 years of age reference group, the ORs for each age group were 0.195 (under 30 years), 1.634 (40-49 years), 2.954 (50-59 years), 5.159 (60-69 years), 5.640 (70-79 years), 11.020 (over 80 years), while the 95% CIs were 0.071-0.536 (under 30 years), 1.340-1.992 (40-49 years), 2.421-3.604 (50-59 years), 4.109-6.476 (60-69 years), 3.822-8.322 (70-79 years), and 2.809-42.234 (over 80 years). Conclusions: Colorectal adenoma prevalence increased proportionally with age. Only subjects under the age of 30 years had a definitely lower prevalence of colorectal adenoma. Male gender, positive occult blood, positive serology of H. pylori, and hypertriglyceremia were associated risk factors of colorectal adenoma. (Korean J Gastroenterol 2013;62:104-110).
    The Korean journal of gastroenterology = Taehan Sohwagi Hakhoe chi 08/2013; 62(2):104-10.
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    ABSTRACT: In contrast to the well known immunostimulatory roles of IL-12, little has been known about its immunosuppressive roles. In the present study, IL-12-activated lymphocyte-mediated macrophage apoptosis was investigated by employing murine lymphocyte/macrophage cocultures. IL-12-activated lymphocytes and their culture supernatants induced an inducible nitric oxide synthase (iNOS)-mediated nitric oxide (NO) synthesis in macrophages. The NO synthesis was markedly inhibited by blocking antibodies to IFN-γ and TNF-α, suggesting the key role of these lymphocyte cytokines in mediating the NO synthesis. The endogenously produced NO inhibited macrophage proliferation, and induced apoptosis in concordance with the accumulation of p53, phosphatase and tensin homologue deleted on chromosome 10 (PTEN) and DR5, and the activation of caspase-3, processes that were inhibited by N(G)-monomethyl-l-arginine, aminoguanidine (NO synthase inhibitors) and 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl 3-oxide (an NO scavenger). These results were further supported by the findings obtained from the experiments employing IFN-γ-knockout and iNOS-knockout mice. Our study demonstrated a novel, non-contact-dependent mechanism of macrophage suppression by IL-12-activated lymphocytes: induction of growth inhibition and apoptosis of macrophages due to endogenous NO synthesis induced by cytokines secreted from IL-12-activated lymphocytes.
    Cytokine 08/2013; · 2.87 Impact Factor
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    ABSTRACT: The aim of this study is to provide seismic fragility curves of reinforced concrete columns retrofitted by shape memory alloy wire jackets and thus assess the seismic performance of the columns against earthquakes, comparing them with reinforced concrete columns with lap-spliced and continuous reinforcement. For that purpose, this study first developed analytical models of the experimental results of the three types of columns, (1) lap-spliced reinforcement, (2) continuous reinforcement and (3) lap-spliced reinforcement and retrofitted by SMA wire jackets, using the OpenSEES program, which is oriented to nonlinear dynamic analysis. Then, a suite of ten recorded ground motions was used to conduct dynamic analyses of the analytical models with scaling of the peak ground acceleration from 0.1g to 1.0g in steps of 0.1g. From the static experimental tests, the column retrofitted with SMA wire jackets had a larger displacement ductility by a factor of 2.3 times that of the lap-spliced column, which was 6% larger compared with the ductility of the continuous reinforcement column. From the fragility analyses, the SMA wire jacketed column had median values of 0.162g and 0.567g for yield and collapse, respectively. For the yield damage state, the SMA wire jacketed column had a median value similar to the continuous reinforcement column. However, for the complete damage state, the SMA wire jacketed column showed a 1.33 times larger median value than the continuously reinforcement column.
    Smart Materials and Structures 07/2013; 22(8):085028. · 2.45 Impact Factor
  • Hye Young Kim, Jung Hae Kim, Hee Sun Kim
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    ABSTRACT: Chemokines promote vascular inflammation and play a pathogenic role in the development and maintenance of hypertension. However, in our previous study, chemokine CCL5 was shown to reduce Ang II-induced 12-lipoxygenase (12-LO) production as well as proliferation in vascular smooth muscle cells (VSMCs) obtained from spontaneously hypertensive rats (SHR). Dimethylarginine dimethylaminohydrolase (DDAH) acts as an important regulator of vascular function by metabolizing and regulating plasma asymmetric (N(G),N(G)) dimethylarginine (ADMA), a major risk factor for cardiovascular disease. Therefore, in this study, we investigated the effect of CCL5 on DDAH-1 production in SHR VSMCs. Constitutive expression of DDAH-1 in VSMCs from SHR was higher than that in VSMCs from normotensive Wistar Kyoto rats (WKY), whereas expression of DDAH-2 was not significantly different between SHR and WKY VSMCs. CCL5 increased DDAH-1 production and attenuated Ang II-induced DDAH-1 inhibition in SHR VSMCs. In addition, although CCL5 did not affect the level of asymmetric (N(G),N(G)) dimethylarginine (ADMA), it attenuated Ang II-induced ADMA production through DDAH-1 activity. DDAH-1 induction by CCL5 was mediated by the Ang II subtype 2 receptor (AT2 R) pathway. Further, attenuation of Ang II-induced 12-LO and endothelin-1 (ET-1) expression by CCL5 could be attributed to DDAH-1 activity. These findings combined with our previous results suggest that CCL5 is a potential down-regulatory factor in Ang II-induced vascular hypertension.
    Cytokine 07/2013; · 2.87 Impact Factor
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    ABSTRACT: We previously determined that AKR/J mice housed in a low-dose-rate (LDR, (137)Cs, 0.7 mGy/h, 2.1 Gy) -irradiation facility develop less spontaneous thymic lymphoma and survive longer than those receiving sham or high-dose-rate (HDR, (137)Cs, 0.8 Gy/min, 4.5 Gy) radiation. Interestingly, histopathological analysis showed a mild lymphomagenesis in the thymus of LDR-irradiated mice. Thus, we herein explored if LDR irradiation could trigger the expression of thymic genes involved in the DNA repair process of AKR/J mice. The enrichment analysis of Gene Ontology terms and KEGG pathways showed immune response, nucleosome organization, and PPAR signaling pathway in LDR-irradiated mice. Our microarray analysis and qPCR data demonstrated that mRNA levels of Lig4 and RRM2 were specifically elevated in AKR/J mice at 130 days after the start of LDR irradiation. Furthermore, transcriptional levels of H2AX and ATM, proteins known to recruit DNA repair factors, were also shown to be upregulated. These data suggest that LDR irradiation can trigger specific induction of DNA repair-associated genes in an attempt to repair damaged DNA during tumor progression, which in turn contributed to the decreased incidence of lymphoma and increased survival. Therefore, we identified specific DNA repair genes in LDR-irradiated AKR/J mice.
    Journal of veterinary science (Suwŏn-si, Korea) 06/2013; · 0.89 Impact Factor
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    ABSTRACT: Hypermethylation of runt-related transcription factor 3 (RUNX3) promoter regions occurs in at least 65% of colorectal cancer cell lines. Compound K, the main metabolite of ginseng saponin, induced demethylation of a RUNX3 promoter in HT-29 human colorectal cancer cells, assessed by methylation-specific PCR and the quantitative pyrosequencing analysis. The demethylation of RUNX3 in compound K-treated cells resulted in the re-expression of RUNX3 mRNA, protein and the localization into the nucleus. Demethylation of the RUNX3 gene by compound K occurred via inhibition of the expression and activity of DNA methyltransferase 1 (DNMT1). Compound K also significantly induced RUNX3-mediated expression of Smad4 and Bim. DNMT1 inhibitory activity by compound K was related to extracellular signal-regulated kinase (ERK) inhibition, assessed by siRNA transfection on DNMT1 and ERK. In conclusion, compound K significantly inhibits the growth of colorectal cancer cells by inhibiting DNMT1 and reactivating epigenetically-silenced genes. Ginseng saponin is a potential candidate as DNMT1 inhibitor in the chemoprevention of cancer.
    International Journal of Oncology 05/2013; · 2.77 Impact Factor
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    ABSTRACT: The objective of this study is to investigate the effect of temperature distribution, concrete strength, cover thickness, and heating time on the structural behavior of reinforced concrete beams. Toward this goal, reinforced concrete beams with different concrete compressive strength and cover thickness are fabricated and subjected to furnace heating for 60, 90, and 120 min under a loaded state. In order to analyze structural behavior based on the thermal behavior of the beams, transient temperature distribution is measured during the furnace heating. After furnace heating, spalling is observed. From loading tests performed on the damaged reinforced concrete beams, residual strength, maximum loads, and beam deflections are measured and examined. The experimental results show that significant damage occurs in the reinforced concrete beams under high temperatures. In addition, it is found that thermal and structural behavior of damaged reinforced concrete beams is dependent on cover thickness and concrete strength and that most structural damage occurs in a relatively short period of heating time. Using these experimental findings, an equation is proposed that can be used to predict maximum load capacity and stiffness reduction ratio of the damaged reinforced concrete beams.
    Journal of Fire Protection Engineering 05/2013; 23(2):135-151. · 0.26 Impact Factor
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    ABSTRACT: Despite current immunosuppressive therapies, acute graft-versus-host disease (aGVHD) is a major cause of morbidity and mortality in the allogeneic hematopoietic stem cell transplantation (HSCT). In the present study, therapeutic effects of intraperitoneal glutamine (Gln) administration (1 g/kg/day) in a mouse aGVHD model were evaluated. Gln administration significantly inhibited the GVHD-induced inflammation and tissue injury in the intestine, liver, skin and spleen. Gln therapy improved the score of clinical evidence of aGVHD and prolonged the median survival of aGVHD mice. Gln administration in aGVHD mice increased the fraction of Foxp3+/CD4+/CD25+ cells in the blood measured on day 7, and decreased the serum levels of tumor necrosis factor-α measured on days 7, 14 and 21 after aGVHD induction. These results demonstrated that Gln administration may be useful in protecting the host from aGVHD.
    Biochemical and Biophysical Research Communications 04/2013; · 2.28 Impact Factor
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    ABSTRACT: Dietary inorganic sulfur is the minor component in our diet, but some studies suggested that inorganic sulfur is maybe effective to treat cancer related illness. Therefore, this study aims to examine the effects of inorganic sulfur on cell proliferation and gene expression in MDA-MB-231 human breast cancer cells. MDA-MB-231 cells were cultured the absence or presence of various concentrations (12.5, 25, or 50 µmol/L) of inorganic sulfur. Inorganic sulfur significantly decreased proliferation after 72 h of incubation (P < 0.05). The protein expression of ErbB2 and its active form, pErbB2, were significantly reduced at inorganic sulfur concentrations of 50 µmol/L and greater than 25 µmol/L, respectively (P < 0.05). The mRNA expression of ErbB2 was significantly reduced at an inorganic sulfur concentration of 50 µmol/L (P < 0.05). The protein expression of ErbB3 and its active form, pErbB3, and the mRNA expression of ErbB3 were significantly reduced at inorganic sulfur concentrations greater than 25 µmol/L (P < 0.05). The protein and mRNA expression of Akt were significantly reduced at an inorganic sulfur concentration of 50 µmol/L (P < 0.05), but pAkt was not affected by inorganic sulfur treatment. The protein and mRNA expression of Bax were significantly increased with the addition of inorganic sulfur concentration of 50 µmol/L (P < 0.05). In conclusion, cell proliferation was suppressed by inorganic sulfur treatment through the ErbB-Akt pathway in MDA-MB-231 cells.
    Nutrition research and practice 04/2013; 7(2):89-95. · 1.13 Impact Factor
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    ABSTRACT: Background. Empirical evidence involving the processing of social information by patients with obsessive-compulsive disorder (OCD) has been relatively scarce. Our study investigated the perceptual abilities of patients with OCD to recognize human faces and bodies. Method. Fifty-four drug-free or drug-naïve patients with OCD and 42 healthy controls performed discrimination tasks consisting of four types of stimuli: two sets of faces that were manipulated with regard to configuration and features, human bodies, and chairs. The stimuli were presented in upright and upside-down orientations. Results. Patients with OCD were significantly less accurate in discriminating pairs of bodily postures implying actions. However, we found no significant differences between patient and control groups in the ability to recognize faces and chairs. The inversion effects for bodies and faces were also comparable between the two groups. Conclusions. The current findings suggest that patients with OCD experience difficulty in perceiving static forms of bodily postures, but are able to adequately recognize human faces. Our data indicate a selective deficit in the perception of bodily postures in those with OCD and suggest that this deficit is probably not related to the abnormal configurational processing of social objects.
    Journal of Neuropsychology 03/2013; 7(1):58-71. · 3.82 Impact Factor
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    ABSTRACT: Hypochondroplasia (HCH) is an autosomal dominant inherited skeletal dysplasia, usually caused by a heterozygous mutation in the fibroblast growth factor receptor 3 gene (FGFR3). A 27-year-old HCH woman with a history of two consecutive abortions of HCH-affected fetuses visited our clinic for preimplantation genetic diagnosis (PGD). We confirmed the mutation in the proband (FGFR3:c.1620C>A, p.N540K), and established a nested allele-specific PCR and sequence analysis for PGD using single lymphocyte cells. We performed this molecular genetic analysis to detect the presence of mutation among 20 blastomeres from 18 different embryos, and selected 9 embryos with the wild-type sequence (FGFR3:c.1620C). A successful pregnancy was achieved through a frozen-thawed cycle and resulted in the full-term birth of a normal neonate. To the best of our knowledge, this is the first report of a successful pregnancy and birth using single-cell allele-specific PCR and sequencing for PGD in an HCH patient.
    Clinical and experimental reproductive medicine. 03/2013; 40(1):42-6.
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    ABSTRACT: Previously, we reported that 20-O-(β-D-gluco-pyranosyl)-20(S)-protopanaxadiol (Compound K, a meta-bolite of ginseng saponin) induces mitochondria-dependent and caspase-dependent apoptosis in HT-29 human colon cancer cells via the generation of reactive oxygen species. The aim of the present study was to elucidate the mechanism underlying apoptosis induced by Compound K with respect to endoplasmic reticulum (ER) stress in HT-29 cells. In the present study, Compound K induced apoptotic cell death as confirmed by DNA fragmentation and apoptotic sub-G1 cell population. Compound K also induced ER stress as indicated by staining with ER tracker, cytosolic and mitochondrial Ca2+ overloading, phosphorylation of protein-kinase-like endoplasmic reticulum kinase (PERK), phosphorylation of eukaryotic initiation factor-2α (eIF-2α), phosphorylation of IRE-1, splicing of ER stress-specific X-box transcription factor-1 (XBP-1), cleavage of activating transcription factor-6 (ATF-6), upregulation of glucose-regulated protein-78 (GRP-78/BiP) and CCAAT/enhancer-binding protein-homologous protein (CHOP), and cleavage of caspase-12. Furthermore, downregulation of CHOP expression using siCHOP RNA attenuated Compound K-induced apoptosis. Taken together, these results support the important role of ER stress response in mediating Compound K-induced apoptosis in human colon cancer cells.
    Oncology Reports 02/2013; · 2.19 Impact Factor
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    ABSTRACT: We have investigated radiation-sensitive expressed genes (EGs), their signal pathways, and the effects of ionizing radiation in the thymus of ICR and AKR/J mice. Whole-body and relative thymus weights were taken and microarray analyses were done on the thymuses of high-dose-rate (HDR, (137) Cs, 0.8 Gy/min, a single dose of 4.5 Gy) and low-dose-rate (LDR, (137) Cs, 0.7 mGy/h, a cumulative dose of 1.7 Gy) irradiated ICR and AKR/J mice. Gene expression patterns were validated by quantitative polymerase chain reaction (qPCR). The effect of ionizing radiation on thymus cell apoptosis was measured terminal deoxynucleotidyl-transferase-mediated dUTP-end labeling (TUNEL). LDR-irradiation increased the mean whole-body weight, but decreased the relative thymus weight of AKR/J mice. Radiation-sensitive EGs were found by comparing HDR- and LDR-irradiated ICR and AKR/J mice. qPCR analysis showed that 12 EGs had dose and dose-rate dependent expression patterns. Gene-network analysis indicated that Ighg, Igh-VJ558, Defb6, Reg3g, and Saa2 may be involved in the immune response, leukocyte migration, and apoptosis. Our data suggest that expression of the HDR (Glut1, Glut4, and PKLR) and LDR radiation-response genes (Ighg and Igh-VJ558) can be dose or dose-rate dependent. There was an increased number of apoptotic cells in HDR-irradiated ICR mice and LDR-irradiated AKR/J mice. Thus, changes of the mean whole-body weight and relative thymus weight, EGs, signal pathways, and the effects of ionizing radiation on the thymus of ICR and AKR/J mice are described.
    Cell Biology International 02/2013; · 1.64 Impact Factor

Publication Stats

1k Citations
267.54 Total Impact Points

Institutions

  • 2003–2014
    • Yeungnam University
      • • Department of Microbiology
      • • College of Medicine
      • • Division of Internal Medicine
      Daikyū, Daegu, South Korea
  • 2013
    • Seoul Women's University
      • Department of Food and Nutrition
      Sŏul, Seoul, South Korea
    • Korea Hydro and Nuclear Power - Central Research Institute
      Sŏul, Seoul, South Korea
  • 2012–2013
    • Woosuk University
      완주, North Jeolla, South Korea
    • Konkuk University
      Sŏul, Seoul, South Korea
  • 2010–2013
    • Seoul National University Hospital
      • • Department of Obstetrics and Gynecology
      • • Department of Neuropsychiatry
      Seoul, Seoul, South Korea
    • Kyung Hee University
      Sŏul, Seoul, South Korea
  • 2009–2013
    • Radiation Health Research Institute
      Sŏul, Seoul, South Korea
    • Korea Institute of Oriental Medicine
      Bucheon, Gyeonggi Province, South Korea
  • 2006–2013
    • Yonsei University Hospital
      • Department of Internal Medicine
      Sŏul, Seoul, South Korea
    • Seoul National University
      • • Medical Research Center
      • • Department of Obstetrics and Gynecology
      Sŏul, Seoul, South Korea
  • 2005–2013
    • Ewha Womans University
      • Department of Architectural Engineering
      Sŏul, Seoul, South Korea
    • Jeju National University
      • School of Medicine and Applied Radiological Science Research Institute
      Ansan, Gyeonggi, South Korea
    • Seoul National University Bundang Hospital
      • Department of Obstetrics and gynecology
      Seoul, Seoul, South Korea
  • 2010–2012
    • Chonbuk National University Hospital
      Sŏul, Seoul, South Korea
  • 2011
    • Dong-A University
      • Department of Emergency Medicine
      Pusan, Busan, South Korea
  • 2010–2011
    • Rowe Neuroscience Institute
      Lenexa, Kansas, United States
    • Jeonbuk Science College
      South Korea
  • 2008
    • Seoul Medical Center
      Sŏul, Seoul, South Korea