Objective : It has long been known about the osteogenic effect of CPC-HAS on bone tissues. However, it has not been determined the effect of CPC-HAS on cancer cells. The purpose of this study is to screen the CPC-HAS mediated differentially expressed genes in cancer cells such as HepG2 hepatoma cells. Oligonucleotide microarray and proteomics approaches were employed to screen the differential expression genes. Methods : CPC-HAS was prepared by boiling and stored at $-70^{\circ}C$ until use. Cells were treated with various concentrations of CPC-HAS (0.1, 0.5, 1.5, 10, 20mg/ml) for 24 h. Cell toxicity was tested by MTT assay. To screen the differentially expressed genes in cancer cells, cells were treated with 1.5mg/ml of CPC-HAS. For oligonucleotide microarray assay, total RNA was used for gene expression analysis using oligonucleotide Genechip(Human genome Ul33 Plus 2.0., Affimatrix Co.). For proteomic analysis, total protein was analyzed by 2D gel electrophoresis and Q-TOF mass spectrometer. Results : It has no cytotoxic effects on both HepG2 cell in all concentrations(0.l, 0.5, 1.5, 10, 20mg/ml). In oligonucleotide microarray assay, the number of more than twofold differentially regulated known genes was 23 with 5 up-regulated and 18 down-regulated genes in HepG2 cells. In proteomic analysis, three spots were identified by 2D-gel electrophoresis and Q-TOF analysis. Two down-regulated proteins were aldehyde dehydrogenase 1 and enolase 1, and up-regulated protein was fatty acid binding protein 1 by 1.5mg/ml of CPC-HAS. Discussion : This study showed the screening of CPC-HAS mediated differentially regulated genes using combined approaches of oligonucleotide microarray and proteomic analysis. The screened genes will be used for the better understanding of the therapeutic effects of CPC-HAS on cancer fields.
Proceedings of the Korean Vacuum Society Conference
/
2012.08a
/
pp.254-255
/
2012
Interest in nano-crystalline silicon (nc-Si) thin films has been growing because of their favorable processing conditions for certain electronic devices. In particular, there has been an increase in the use of nc-Si thin films in photovoltaics for large solar cell panels and in thin film transistors for large flat panel displays. One of the most important material properties for these device applications is the macroscopic charge-carrier mobility. Hydrogenated amorphous silicon (a-Si:H) or nc-Si is a basic material in thin film transistors (TFTs). However, a-Si:H based devices have low carrier mobility and bias instability due to their metastable properties. The large number of trap sites and incomplete hydrogen passivation of a-Si:H film produce limited carrier transport. The basic electrical properties, including the carrier mobility and stability, of nc-Si TFTs might be superior to those of a-Si:H thin film. However, typical nc-Si thin films tend to have mobilities similar to a-Si films, although changes in the processing conditions can enhance the mobility. In polycrystalline silicon (poly-Si) thin films, the performance of the devices is strongly influenced by the boundaries between neighboring crystalline grains. These grain boundaries limit the conductance of macroscopic regions comprised of multiple grains. In much of the work on poly-Si thin films, it was shown that the performance of TFTs was largely determined by the number and location of the grain boundaries within the channel. Hence, efforts were made to reduce the total number of grain boundaries by increasing the average grain size. However, even a small number of grain boundaries can significantly reduce the macroscopic charge carrier mobility. The nano-crystalline or polymorphous-Si development for TFT and solar cells have been employed to compensate for disadvantage inherent to a-Si and micro-crystalline silicon (${\mu}$-Si). Recently, a novel process for deposition of nano-crystralline silicon (nc-Si) thin films at room temperature was developed using neutral beam assisted chemical vapor deposition (NBaCVD) with a neutral particle beam (NPB) source, which controls the energy of incident neutral particles in the range of 1~300 eV in order to enhance the atomic activation and crystalline of thin films at room temperature. In previous our experiments, we verified favorable properties of nc-Si thin films for certain electronic devices. During the formation of the nc-Si thin films by the NBaCVD with various process conditions, NPB energy directly controlled by the reflector bias and effectively increased crystal fraction (~80%) by uniformly distributed nc grains with 3~10 nm size. The more resent work on nc-Si thin film transistors (TFT) was done. We identified the performance of nc-Si TFT active channeal layers. The dependence of the performance of nc-Si TFT on the primary process parameters is explored. Raman, FT-IR and transmission electron microscope (TEM) were used to study the microstructures and the crystalline volume fraction of nc-Si films. The electric properties were investigated on Cr/SiO2/nc-Si metal-oxide-semiconductor (MOS) capacitors.
Kim, Dong Soon;Paik, Sang Hoon;Lim, Chae Man;Lee, Sang Do;Koh, Younsuck;Kim, Woo Sung;Kim, Won Dong
Tuberculosis and Respiratory Diseases
/
v.43
no.6
/
pp.954-964
/
1996
Background : The type of the infiltrating cells in al veolitis may be determined by the chemokines in the lesion. MIP-1 ${\alpha}$, a C-C type chemokine, stimulates proliferation and cytokine secretion from macrophages and induces early neutrophilic and later monocytic inflammation in vi vo. IL-8, a C-X-C type chemokine is known to attract neutrophils and T-lymphocytes. This study is performed to find out the relative role of two different chemokines in diffuse interstitial lung disease. Subject and Method : We measured the secretion of MIP- 1 ${\alpha}$ and IL-8 from alveolar macrophages(AM), and their level in BAL fluid of 26 patients with DILD (10 IPF, 4 collagen disease, 10 sarcoidosis, and 2 hypersensitivity pneumonitis) and 7 normal control. Result: IL-8 secretion was significantly increased in patients with DILD ($8.15{\pm}4.58$ ng/ml) than in normal ($1.10{\pm}0.93$ ng/ml, p=0.0003). Significant correlation was found between IL-8 secretion and total cell number in BAL fluid (r=0.484, p=0.0068), %(r=0.592, p=0.0004) and No. (r=0.516, p=0.0042) of lymphocyte, and % of AM (r=-0.505, 0.0032). MIP- 1 ${\alpha}$ secretion was also increased in DILD ($2.41{\pm}1.45$ ng/ml) compared to control ($0.63{\pm}0.30$ ng/ml, p=0.0031), and showed a tendency of correlation with total cell number (r=0.368, p=0.0456) and No. of alveolar macrophages (r=0.356, p=0.0579) in BAL fluid. The concentration of IL-8 in BAL fluid was significantly increased in the patients with DILD ($40.4{\pm}34.5$ pg/ml) compared to control ($3.90{\pm}2.47$ pg/ml, p=0.0094) and it showed a significant correlation with the total cell number (r=0.484, p=0.0068), %(r=-0.505, p=0.0032) of AM, and % (r=0.592, p=0.0004) and No. (r=0.516, p=0.0042) of lymphocyte in BAL fluid. But there was a no significant difference in MIP- 1 ${\alpha}$ concentration in BAL fluid between normal control group and the patients with DILD. Conclusion : From the above results, we concluded that AM of DILD releases increased amount of both IL-8 and MIP- 1 ${\alpha}$ but IL-8 has better correlation with the type of alveolitis.
Objective: The purpose of our study was to show the effects of Hwalhyulmaksung-bang (Huoxiemoxing-fang, HHMSB) treatment on cBSA-induced in MN Mouse Model. Methods: We divided the 20 mice into 4 groups. One group, named NR, was not treated. The second group, named CT, was treated with cBSA (7mg/kg i.p) only. The third group, named HH-250, was treated with cBSA (7mg/kg i.p) and HHMSB extract (250mg/kg, p.o). The fourth group, named HH-500, was treated with cBSA (7mg/kg i.p) and HHMSB extract (500mg/kg, p.o). 4 weeks after cBSA, proteinuria, serum albumin, total cholesterol, serum creatinine, BUN, total cell number of spleen and kidney of all groups were measured. CD3e+/CD19+ and CD4+/CD8 cells ratio of peripheral blood, kidney and spleen of all groups were analyzed. $IL-1{\beta}$ and TNF-$\alpha$, IL-6, IgG, IgM, and IFN-$\gamma$ levels of all groups were gauged. Histological analysis of kidney tissue and immunohistochemical staining (CD4, CD8) of kidney were observed. Results: The level of proteinuria significantly decreased and serum albumin increased in the group treated with cBSA and HHMSB extract compared with the control. Total cholesterol decreased but not significantly. CD3e+/CD19cells ratio of peripheral blood is decreased, but CD4+/CD8cells ratio has no significancy. CD3e+/CD19+ and CD4+/CD8 cells percentage of kidney and spleen has no significancy. Level of $IL-1{\beta}$, IL-6 is significantly decreased, and IFN-$\gamma$ is significantly increased on HHMSB compared with control. Total IgG level significantly decreased on HHMSB compared with the control. Thickness of GBM decreased on histological analysis of kidney. Deposition of CD4 and CD8 decreased on immunohistochemical staining of kidney. Conclusions: We conclude that Hwalhyulmaksung-bang treatment may could be a useful remedy agents for treating Membranous Neuropathy(MN) induced by cationized bovine serum albumin.
The viable cell of 60% drinking water among 25 drinking water served in restaurant of Daegu district showed above 100 CFU/mL which is sanitary standard of drinking water. The 50 CEO of restaurant considered drinking water served in their own restaurant as just safe and were very deficient in aware of sanitation about drinking water. Sensory quality of drinking water boiled with plant materials, such as barley, Cassia semen, corn, Buckwheat, Korean solomon's seal, Chamomile, Brown rice-green and peppermint was improved in color, taste, flavor and overall acceptability compare to marketed drinking water, respectively. Especially drinking water boiled with Korean solomon's seal was the best In overall acceptability. The number of total bacteria reached above $10^2 CFU/mL$ in marketed drinking water after 4 days storage at 10. But the growth of microorganism did not occur in boiled drinking water with Brown rice-green tea, Korean solomon's seal, barley, Cassia semen and com during storage for 10 days at $10^{\circ}C$, respectively. The number of total bacteria reached above $10^2 CFU/mL$ in marketed drinking water after storage for 1 days at $25^{\circ}C$. The growth of microorganism was accelerated in boiled drinking water with corn, Korean solomon's seal, barley, Cassia semen except Brown rice-green tea during storage far 10 days at $25^{\circ}C$, respectively.
Nanotoxicological research has shown toxicity of nanomaterials to be inversely related to particle size. However, the contribution of agglomeration to the toxicity of nanomaterials has not been sufficiently studied, although it is known that agglomeration is associated with increased nanomaterial size. In this study, we prepared aerosols of nano-sized carbon black by 2 different ways to verify the effects of agglomeration on the toxicity and deposition of nano-sized carbon black. The 2 methods of preparation included the carbon black dispersion method that facilitated clustering without sonication and the carbon black dispersion method involving sonication to achieve scattering and deagglomeration. Male Sprague-Dawley rats were exposed to carbon black aerosols 6 hr a day for 3 days or for 2 weeks. The median mass aerodynamic diameter of carbon black aerosols averaged $2.08{\mu}m$ (for aerosol prepared without sonication; group N) and $1.79{\mu}m$ (for aerosol prepared without sonication; group S). The average concentration of carbon black during the exposure period for group N and group S was $13.08{\pm}3.18mg/m^3$ and $13.67{\pm}3.54mg/m^3$, respectively, in the 3-day experiment. The average concentration during the 2-week experiment was $9.83{\pm}3.42mg/m^3$ and $9.08{\pm}4.49mg/m^3$ for group N and group S, respectively. The amount of carbon black deposition in the lungs was significantly higher in group S than in group N in both 3-day and 2-week experiments. The number of total cells, macrophages and polymorphonuclear leukocytes in the bronchoalveolar lavage (BAL) fluid, and the number of total white blood cells and neutrophils in the blood in the 2-week experiment were significantly higher in group S than in normal control. However, differences were not found in the inflammatory cytokine levels (IL-$1{\beta}$, TNF-${\alpha}$, IL-6, etc.) and protein indicators of cell damage (albumin and lactate dehydrogenase) in the BAL fluid of both group N and group S as compared to the normal control. In conclusion, carbon black aerosol generated by sonication possesses smaller nanoparticles that are deposited to a greater extent in the lungs than is aerosol formulated without sonication. Additionally, rats were narrowly more affected when exposed to carbon black aerosol generated by sonication as compared to that produced without sonication.
To estimate the spawning period the annual change of gonadosomatic index (GSI) were examined from January 2000 to December 2001. Fecundity, spawning frequency and egg diameter were measured by ocular observation. Germ cell differentiation during gametogenesis, the reproductive cycle and the first sexual maturity of greenling Hexagrammos otakii were observed under light microscopy from January to December, 2000. GSI began to increase in August and reached the maximum in November when ovary was getting mature. The reproductive cycle of H. otakii can be divided into five successive stages in females: early growing stage (July), late growing stage (July to August), mature stage (September to October), ripe and spent stage (September to December), and recovery and resting stage (December to June). Males showed four successive stages : growing (June to August), mature (August to October), ripe and spent (September to December), and recovery and resting stage (December to May). According to the frequency distributions of egg diameter in spawning season, H. otakii could be one of polycyclic species spawning 2 times or more during one spawning season. Number of total eggs and mature eggs in the absolute fecundity were related to the standard length and body weight, respectively. Number of total eggs and mature eggs in relative fecundity were also proportional to the standard length, but rather these numbers decreased with body weight. Percentages of first sexual maturity of females and males in greenling were over 50% from 19.1 to 21.1cm in length, and 100% for fish over 25.1cm in length. Therefore, both sexes are ready to reproduce after one year old.
Mixtures (total solid content: 15%) prepared with whole milk added with skim milk powder and/or sweet potato and/or pumpkin were fermented with 0.205% gelatin, 2% sugar and yogurt bacteria. The fermented mixtures (curd yogurt) were evaluated for acid production (pH, titratable acidity), number of viable cell, sensory property and keeping quality. The acid production of all mixtures remarkably increased for the first 12 hours and there is no significant difference among the mixtures. The lactic acid bacteria counts in the all products after 24 hours incubation were above $6.4{\times}10^{9}cfu/ml$. In organic acids, the mixture added with skim milk powder was higher ratio of lactic acid content to total acidity than those added with sweet potato and/or pumpkin. The sensory score of mixture containing sweet potato was best but curd yogurt containing pumpkin reduced the sensory property. When each mixtures were kept at $5^{\circ}C$ for 15 days, pH, titratable acidity, and number of viable tells of yogurt were not changed.
Journal of the Korean Society of Food Science and Nutrition
/
v.36
no.5
/
pp.540-547
/
2007
The current study examined the effects of catechin on lipid composition of serum and liver and adipocyte of epididymal fat pads in obese rats fed high fat diet. Sprague-Dawley male rats weighing $100{\pm}10g$ were randomly divided into eight groups, four normal diet groups and four high fat diet groups according to the level of dietary catechin supplement. The rats were fed ad libitum experimental diets for 4 weeks and then they were sacrificed. Body weight in HF group was heavier than that of NC group, but HFCM and HFCH groups were significantly reduced compared to HF group. Relative body weight to abdominal weight and relative body weight to epididymal weight in HF group were increased to 103% and 106%, respectively, compared to NC group, but HFCM and HFCH groups were significantly reduced as compared to HF group. The levels of serum triglyceride, total cholesterol, LDL-cholesterol and atherogenic index in HFCH groups were significantly lower than those of HF group, whereas HDL-cholesterol levels were increased. Total lipid contents of liver in HF group was significantly higher than that of NC group, but HFCH group maintained the NC level. There were no significant difference in hepatic triglyceride contents of high fat diet groups. Contents of hepatic cholesterol in HF group was 29% higher than that of NC group, but HFCM and HFCH groups were significantly reduced as compared to HF group. Cell number and cell size of epididymal fat pads in HFCM and HFCH groups were significantly reduced, respectively, compared to HF group. Improved lipid metabolism observed in rats fed catechin may be caused by an alteration of number and size in epididymal fat pad and lipid composition.
Lee Myung Za;Chun Ha Chung;Kim Insoon;Chung Tejune
Radiation Oncology Journal
/
v.15
no.2
/
pp.113-119
/
1997
Purpose : Radical gastrectomy is main treatment of gastric cancer. But the result is not satisfactory with surgery alone. Most of pattern of failure remain locoregional recurrence. To improve 5 year survival postoperative chemotherapy with or without radiotherapy has been used. We analyzed patients with stage III and IV stomach cancer who had radical operation and received postoperative radiation therapy combined with or without chemotherapy retrospectively. Material and Method : From March 1985 to June 1993, 68 patients treated with curative resection and received postoperative adiuvant radiotherapy with 36Gy or more were evaluated. Median age was 60 years(range 28-66 yrs) . Patients were followed from 3 to 133 months with median follow up of 48 months. Thirty seven patients had non signet ring adenocarcinoma, 29 signet ring cell, 2 other cell. Patients with stage IIIA, IIIB, IV disease were 19, 25 and 24 respectively Chemotherapy was given to all patients except two. Results : Five-year overall survival and disease-free survival rate were 36.6% and 33.6%, respectively. Prognostic factor affecting survival were assessed. High ratio of jnvolved/dissected Iymph node, signet ring histology showed Poor Prognosis with statistical significance. Presence of residual tumor after surgery, stageIV. split course of radiation therapy, age, number of involved Iymph node, number of Iymph node dissection and grade of tumor affected survival without statistical significance, Type of chemotherapy did not affect survival. Recurrence was documented in 34 patients. High recurrence was seen in omentum and peritoneum with 23.5%, and remnant stomach, anastomosis site, A-loop and I-loop had also high recurrence with 13.2%. In field locoregional recurrence was 20.7% and total distant metastases were 39.7%. Total intraabdominal failure was 47.1% and extraabdominal failure was 13.2%. Treatment toxicity was considered to be acceptable. 22.1% of patients had grade 3 and only 1 patient had grade 4 leukopenia. Six Patients(8.8%) had weigh loss more than 10%. Conclusion : Treatment toxicity was acceptable with combined treatment with chemotherapy and radiotherapy. Locoregional recurrence was relatively low compared to distant failure with addition of irradiation. Peritoneal and omental seeding was high Five-rear surival was increased with combined modality. Radiation may eradicate minimal residual disease and improve survival, To evaluate role of radiation Prospective randomized study employing chemotherapy alone and chemotherapy plus radiation is necessary. Futhermore to reduce intraabdominal failure, role of intraabdominal chemotherapy in addition to combined chemotherapy plus radiation has to be explored.
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