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Young K. Cho(조영걸),Ji Y. Lim,You S. Jung,Sun K. Oh,Hee J. Lee,Heungsup Sung 고려인삼학회 2006 고려인삼학회 학술대회 Vol.- No.-
To investigate the association between Korean red ginseng (KRG) intake in HIV-1 infected patients and occurrence of grossly deleted nef genes (g?nef), we characterized nef genes in 10 long-term slow progressors (LTSP) infected with HIV-1 subtype B and 34 control patients. LTSP was defined whose the annual decrease in CD4 T cells was less than 20/μl over 10 years in the absence of antiretroviral therapy. They were treated with KRG for a prolonged period. Nef genes were amplified from peripheral blood mononuclear cells (PBMC) using nested PCR and products were sequenced directly. Patient CD4 T cell counts decreased from 444 ± 207/㎕ to 294 ± 177/㎕ over 136 ± 23 months of KRG intake. This corresponds to an annual decrease in the level of CD4 T cells of 13.3/㎕. A total of 479 nef genes were amplified from 137 PBMC samples. Nine out of the 10 patients, 47 (34.3%) out of the 137 samples, and 92 out of the 479 genes revealed g?nef. The deletion extended outside the nef gene in 25 g?nef obtained from 6 patients. The proportion of samples with g?nef (34.3%) was significantly higher than 4.8% in control patients (P < 0.001). In addition, it significantly increased as the duration of KRG intake prolongs (P < 0.01). These data suggest the possibility that occurrence of g?nef might be associated with long?term intake of KRG.
나노 그레이팅 어레이 구조를 적용한 초고속 다종 검지 프로틴 센서 성형에 관한 연구
조익현(E. Cho),조영걸(Y. Cho),강기원(K. W. Kang),강신일(S. Kang) 한국소성가공학회 2013 한국소성가공학회 학술대회 논문집 Vol.2013 No.5
We demonstrate a mass production method of label-free nanograting structured protein microarrays integrated with micro-well structures for high throughput screening and highly reliable diagnosis. Protein microarray is composed of nanostructured patterns on the bottom of millimeter scale well structures, which can analyze multiple bio-molecular interactions without cross contamination. In this work, a high sensitivity and a high density protein microarray was realized by rigorous coupled wave analysis (RCWA) and micro-well array design. Nanograting patterns integrated with micro-well array were replicated by UV nanoimprinting using a metallic stamp which was fabricated by multi-step LIGA process. Finally, we verified the feasibility of nanograting based protein microarray chip by analyzing the peak wavelength value (PWV) and PWV shift by cTnT and anti-cTnT interactions.