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Kwon, J. H.,Kim, J. H.,Lee, D. h.,Cho, H.,Hwang, S. Y.,Yuk, S. S.,Erdene-Ochir, T. O.,Noh, J. Y.,Hong, W. T.,Jeong, J. H. Springer Science + Business Media 2016 BioChip Journal Vol.10 No.3
<P>Highly pathogenic avian influenza (HPAI) viruses cause economic losses in the poultry industry and pose a severe threat to human health. Rapid and accurate diagnostic methods are important because they can help prevent further spread of the virus and reduce the time required for eradication of the virus. We developed a low-density microarray for the rapid detection and identification of avian influenza virus subtypes H5, H7, and H9 and their pathotypes in a previous study. In the present study, we report the development of updated probe sets and evaluation of the diagnostic microarray using H5N8 clade 2.3.4.4 HPAI viruses including clinical samples, without the need for egg propagation. Cy3-labeled DNA targets were obtained by reverse transcription polymerase chain reaction using Cy3-labeled universal primers, and labeled amplicons were hybridized to the microarray. All positive samples from RT-PCR showed H5-specific and highly pathogenic pattern in the microarray, without purification of PCR products. Furthermore, it allowed for specific detection of the subtype and pathotype from low DNA concentration samples that did not allow direct sequence analysis. Therefore, this diagnostic microarray has enormous potential for the rapid subtyping and pathotyping from clinical samples without the need for culture.</P>
Hong, D.U.,Han, C.H.,Park, S.H.,Kim, I.J.,Gwak, J.,Han, S.D.,Kim, H.J. Elsevier 2009 Current Applied Physics Vol.9 No.1
Recovery properties after H<SUB>2</SUB>S catalytic poisoning of catalytic-type gas sensor with photo-catalysts and UV radiation have been examined. Each sensing material of the sensor consists of Pd, Pt supported on γ-Al<SUB>2</SUB>O<SUB>3</SUB> and Pd/titanate, Pt/titanate nanotubes or TiO<SUB>2</SUB> particles. Pd/titanate and Pt/titanate nanotubes photo-catalyst were synthesized by hydrothermal synthesis method. All the sensors were deactivated after 500ppm H<SUB>2</SUB>S exposure for 20h. The sensors with Pd/titanate or Pt/titanate nanotubes showed regenerated voltage response under UV radiation. However the sensor with TiO<SUB>2</SUB> particles showed negligible regenerated voltage response. Regenerated voltage response with Pd/titanate or Pt/titanate nanotubes may stem from location of Pd or Pt catalyst on the titanate nanotube photo-catalyst.
20대 여성의 신발종류에 따른 족저압 영역별 비교 연구
김용재,지진구,김정태,홍준희,이중숙,이훈식,박승범 한국운동역학회 2004 한국운동역학회지 Vol.14 No.3
Y. J. KIM, J. G. JI, J. T. KIM, J. H. HONG, J. S. LEE, H. S. LEE, S. B. PARK. A comparison study for mask plantar pressure measures to the difference of shoes in 20 female. Korean Journal of Sport Biomechanics, Vol. 14, No. 3, pp. 83-98, 2004. The purpose of this study was to investigate the test-retest of plantar pressures using the F-Scan system over speeds and plantar regions. 6 healthy female subjects in 20's were recruited for the study. Plantar pressure measurements during locomotor activities can provide information concerning foot function, particularly if the timing and magnitude of the loading profile can be related to the location of specific foot structures such as the metatarsal heads. The Tekscan F-Scan system consists of a flexible, 0.18mm thick sole-shape having 1260 pressure sensors, the sensor insole was trimmed to fit the subjects' right. left shoes - sneakers shoes & dress shoes. It was calibrated by the known weight of the test subject standing on one foot. The Tekscan measurements show the insole pressure distribution as a function of the time. This finding has important implications for the development of plantar pressure test protocols where the function of the forefoot is important. According to the result of analysis it is as follows : 1) Center of force trajectory in women's dress shoes display direct movement, compare with center of force trajectory in Sneaker shoes displays a little bit curved slow pronation movement. Sneaker shoes in forefoot part display very quick supination movement, therefore, this shoes effects negative effectiveness for ankle's stability. Considering center of force trajectory analyzing, the more center of force close straight line, the more movement can be quick movement for locomotion. For foot pressure distribution, center of force trajectory in locomotion is better to curved trajectory with pronation movement. So sneaker shoes style is good shoes considering center of pressure distribution trajectory compare with women's dress shoes. 2) Women's dress shoes increased peak pressure in medial, this is effected by high hill's height. The more increased women's dress shoes's height, the more women's peak pressure will increase, pronation can increase compare with before. Supination movement increase, this focused pressure in lateral, also, supination increased more. If the supination movement increased, foot pressure focused in lateral, therefore, it is appeared force distribution in gait direction. This is bad movement in foot's stability. 3) Women's dress shoes in landing phase displayed a long time, this is when women's dress shoes wear, gait movement is unbalance, so, landing phase displayed a long time. For compensation in gait, swing phase quick movement. 4) Women's dress shoes displayed peak pressure distribution in lateral of rearfoot part, Sneakers shoes displayed peak pressure distribution in medial of forefoot part. Its results has good impact absorption compare with women's dress shoes. In forefoot part, sneakers shoes has good propulsive force compare with women's dress shoes.
Lee, D-H,Kwon, J-S,Lee, H-J,Lee, Y-N,Hur, W,Hong, Y-H,Lee, J-B,Park, S-Y,Choi, I-S,Song, C-S Poultry Science Association, etc 2011 Poultry science Vol.90 No.5
<P>The frequent economic losses incurred with H9N2 low pathogenic avian influenza viruses (LPAI) infection have raised serious concerns for the poultry industry. A 1-dose regimen with inactivated H9N2 LPAI vaccine could not prevent vaccinated poultry from becoming infected and from shedding wild viruses. A study was conducted to determine whether a 2-dose regimen of inactivated H9N2 LPAI vaccine could enhance the immunologic response in chickens. Such gel-primed and mineral oil-boosted regimen has produced encouraging results associated with improved immune responses to an H9N2 LPAI. This strategy could be cost effective and helpful for preventing avian influenza virus in the poultry industry.</P>
Kim, H.S.,Hong, M.,Ann, J.,Yoon, S.,Nguyen, C.T.,Lee, S.C.,Lee, H.Y.,Suh, Y.G.,Seo, J.H.,Choi, H.,Kim, J.Y.,Kim, K.W.,Kim, J.,Kim, Y.M.,Park, S.J.,Park, H.J.,Lee, J. Elsevier/Pergamon 2016 Bioorganic & medicinal chemistry Vol.24 No.22
Based on the lead compound L-80 (compound 2), a potent heat shock protein 90 (HSP90) inhibitor, a series of C-ring truncated deguelin analogs were designed, synthesized and evaluated for Hypoxia Inducible Factor-1α (HIF-1α) inhibition as a primary screening method. Their structure-activity relationship was investigated in a systematic manner by varying the A/B ring, linker and D/E ring, respectively. Among the synthesized inhibitors, compound 5 exhibited potent HIF-1α inhibition in a dose-dependent manner and significant antitumor activity in human non-small cell lung carcinoma (H1299), with better activities than L-80. It also inhibited in vitro hypoxia-mediated angiogenic processes in human retinal microvascular endothelial cells (HRMEC). The docking study of 5 showed a similar binding mode as L-80: it occupied the C-terminal ATP-binding pocket of HSP90, indicating that the anticancer and antiangiogenic activities of 5 were derived from HIF-1α destabilization by inhibiting the C-terminal ATP-binding site of hHSP90.
Hwang, H.J.,Jung, T.W.,Ryu, J.Y.,Hong, H.C.,Choi, H.Y.,Seo, J.A.,Kim, S.G.,Kim, N.H.,Choi, K.M.,Choi, D.S.,Baik, S.H.,Yoo, H.J. North-Holland 2014 Molecular and cellular endocrinology Vol.392 No.1
The direct effects of dipeptidyl peptidase-IV (DPP-IV) inhibitors on endoplasmic reticulum (ER) stress-induced apoptosis and inflammation in cardiomyocytes have not been elucidated. H9c2 cell viability, which was reduced by tunicamycin, was increased after DPP-IV inhibitor gemigliptin treatment. Gemigliptin significantly decreased the tunicamycin-mediated increase in glucose regulated protein 78 (GRP78) expression and ER stress-mediated signaling molecules such as protein kinase RNA-like endoplasmic reticulum kinase (PERK)/C-EBP homologous protein (CHOP) and inositol-requiring enzyme 1α (IRE1α)/c-Jun N-terminal kinase (JNK)-p38. Furthermore, gemigliptin effectively induced Akt phosphorylation in a dose-dependent manner. Using flow cytometry and Hoechst staining, we showed that treatment with Akt inhibitor significantly blocked the anti-apoptotic effects mediated by gemigliptin. The reduction in tunicamycin-induced GRP78 level and PERK/CHOP pathway activity by gemigliptin was reversed after treatment with Akt inhibitor. In conclusion, gemigliptin effectively inhibited ER stress-induced apoptosis and inflammation in cardiomyocytes via Akt/PERK/CHOP and IRE1α/JNK-p38 pathways, suggesting its direct protective role in cardiovascular diseases.
Driving frequency dependency of gas species in the bubble formation for aqua-plasma generation
Yoon, S.Y.,Kim, S.J.,Lee, S.H.,Hong, J.W.,Kim, K.H.,Seol, Y.J.,Kim, G.H. Elsevier 2013 Current Applied Physics Vol.13 No.suppl1
Effects of voltage driving frequency on the gas composition, electrical and optical emission properties of aqua-plasmas generated in electrolyte solution, are investigated and the experiment was carried out in the range of 10 Hz-50 kHz. In the range of 10-300 Hz, H<SUB>2</SUB> dominated bubbles are generated and it is attributed to electrolysis. With increasing frequency, the gas composition inside the bubble changes to the H<SUB>2</SUB>O which can be determined from the observation of atomic H to OH(A-X) transition from the optical measurements of aqua-plasma. In higher frequency than 2 kHz, the boiling on the electrode dominates to the formation of the bubble. Consequently, the radicals and plasma properties are varied with the driving frequency.
Kim, B.H.,Hong, W.G.,Moon, H.R.,Lee, S.M.,Kim, J.M.,Kang, S.,Jun, Y.,Kim, H.J. Pergamon Press ; Elsevier Science Ltd 2012 International journal of hydrogen energy Vol.37 No.19
In order to prove the existence of an optimum interlayer distance for H<SUB>2</SUB> uptake, we have obtained H<SUB>2</SUB> isotherms with respect to the interlayer distance of pillared-graphene oxide (GO) at 1.0 bar and 77 K. Interlayer distances of GO were changed by intercalation of three kinds of diaminoalkanes with a different number of carbon atoms (NH<SUB>2</SUB>(CH<SUB>2</SUB>)<SUB>n</SUB>NH<SUB>2</SUB>, n = 2, 6, 10) as pillars and changing the subsequent thermal annealing conditions. We found an optimum GO interlayer distance for maximum H<SUB>2</SUB> uptake at 6.3 A similar to the predicted distance from first-principles calculations for graphitic materials, and the value obtained from thermally modulated GO. Our results experimentally corroborate the existence of an optimum interlayer distance and demonstrate the importance of an interlayer distance for the design of materials for H<SUB>2</SUB> storage.