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이동현,신종익,나정민,이원호 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)
The objective of this study is to propose the method of predicting concrete compressive strength and re-bar yield strength which are necessary for the remodeling and preservation of buildings. This study analyzed tested 28-day concrete compressive strength and re-bar yield strength which were reported in journals of the Architectural Institute of Korea and journals of the Korea Concrete Institute. From the data, the standard normal distribution graph was produced and the reasonable process of expecting concrete compressive strength and re-bar yield strength was suggested.
STAT3-RANTES autocrine signaling is essential for tamoxifen resistance in human breast cancer cells.
Yi, Eun Hee,Lee, Chang Seok,Lee, Jin-Ku,Lee, Young Ju,Shin, Min Kyung,Cho, Chung-Hyun,Kang, Keon Wook,Lee, Jung Weon,Han, Wonshik,Noh, Dong-Young,Kim, Yong-Nyun,Cho, Ik-Hyun,Ye, Sang-Kyu American Association for Cancer Research 2013 Molecular cancer research Vol.11 No.1
<P>The acquisition of tamoxifen resistance is a major therapeutic problem in breast cancer. We developed a tamoxifen-resistant MCF-7 (TRM-7) cell line to elucidate the molecular mechanisms and factors associated with acquisition of such resistance. We showed that phosphorylation of STAT3 at tyrosine 705 (Y705) and RANTES expression are increased in response to tamoxifen in human breast cancer cells. On the basis of these results, we hypothesize that upregulated STAT3 phosphorylation and RANTES may be correlated with the development of drug resistance. Here, we showed that STAT3 and RANTES contribute to the maintenance of drug resistance. STAT3 phosphorylation is constitutively retained via a RANTES autocrine loop, which in turn upregulates anti-apoptotic signals in TRM-7 cells. STAT3-RANTES autocrine signaling affected expression of anti-apoptotic BCL-2 family genes and prevented TRM-7 cells from undergoing programmed cell death by inhibiting PARP and caspase-9 cleavage. Subsequently, blockade of STAT3 and RANTES in TRM-7 cells resulted in reduction of anti-apoptotic signals, which was rescued by exogenous RANTES treatment; drug resistance was also restored. Taken together, our results suggested that STAT3-RANTES autocrine signaling is essential for maintenance of drug resistance and inhibition of programmed cell death. These mechanisms of STAT3-RANTES autocrine signaling suggest a novel strategy for management of patients with tamoxifen-resistant tumors.</P>
Dong-Soo Park,Soo-Kwon Park,Gi Hwan Yi,Un-Ha Hwang,Sang-Min Kim,Sang-Ik Han,Woo Duck Seo,Jong-Hee Lee,Jun-Hyun Cho,You-Chun Song,Un-Sang Yeo,Ki-Chang Jang,Taek-Min Kwon,Min-Hee Nam,Sung-Tae Park,Hang- 한국육종학회 2010 한국육종학회지 Vol.42 No.5
Rice is a staple food for more than 50% of the world's population. Embryo comprises only 2 to 3% of the weight distribution of the entire pericarp but has higher concentration of vitamins, proteins, and essential fatty acids than the other parts of grains. Moreover, α-tocoperol, γ-oryzanol, phytic acid and γ-aminobutric acid that have nutraceutical value are abundant. Increasing the volume of embryo assures the fortification of nutritional value of rice grain. We developed new black waxy giant embryo rice, Milyang 263 by crossing Josaengheugchal, a black waxy rice variety, and get, a giant embryo mutant generated by tissue culture. The nutrient contents and physical properties of Milyang 263 were compared with several giant embryo mutants and normal embryo rice varieties. Changes in the nutrient properties after germination were also observed. Results indicated that this new black waxy giant embryo rice, Milyang 263, offers a promising source for improving nutritional quality of rice especially anthocyanin, essential minerals, and GABA.
Korean Prostate Cancer Patients Have Worse Disease Characteristics than their American Counterparts
Kang, Dong Il,Chung, Jae Il,Ha, Hong Koo,Min, Kweonsik,Yoon, Jangho,Kim, Wansuk,Seo, Won Ik,Kang, Pil Moon,Jung, Soo Jin,Kim, Isaac Yi Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.11
Background: Although the PSA test has been used in Korea for over 20 years, the incidence of prostate cancer has risen, and the associated mortality has increased about 13-fold over the 20-year period. Also, several investigators have suggested that Asians in America are more likely to present with more advanced prostate cancer than Caucasians. We compared the characteristics of native Koreans and Americans (Caucasians and African-Americans) undergoing radical prostatectomies in Korea and the US. Materials and Methods: Study subjects comprised patients at Korean and US hospitals from 2004 to 2012 who had undergone radical prostatectomies. We compared the characteristics of the subjects, including age, preoperative prostate-specific antigen (PSA) levels, body mass index (BMI), Gleason score, and pathological T stage. Results: In total, 1,159 males (502 Koreans, 657 Americans) were included. The Korean and American patients had mean ages of $67.1{\pm}6.6$ and $59.2{\pm}6.7$ years, respectively. The mean preoperative PSAs were $15.4{\pm}17.9$ and $6.2{\pm}4.6ng/mL$ (p=0.0001) and the mean BMIs were $23.6{\pm}2.6$ and $28.7{\pm}4.4kg/m^2$ (p=0.0001), respectively. Pathological localized prostate cancer represented 71.7% of cases for Koreans and 77.6% for Americans (p=0.07). According to age, Koreans had higher T stages than Americans in their 50s (p=0.021) and higher Gleason scores than Americans in all age groups. According to PSA, Koreans had higher Gleason scores than Americans for PSA >10 ng/mL (p<0.05). According to prostate size and Gleason scores, Koreans had higher PSA values than Americans (p<0.01). Conclusions: These results show that Korean patients have elevated risk of malignant prostate cancers, as indicated by the significantly higher Gleason scores and PSAs, suggesting a need for novel prostate cancer treatment strategies in Korea.
웹2.0 기반 지자체 전자정부서비스 현황 분석과 정보보호 대책
서동우(Dong-Woo Seo),박현근(Hyun-Keun Park),이익섭(Ik-Sub Lee),이완석(Wan S Yi) 한국정보과학회 2010 한국정보과학회 학술발표논문집 Vol.37 No.2B
정부는 2001년부터 전자정부서비스 활성화에 많은 노력을 기울여 왔다. 또한, 지난 몇 년간의 웹2.0 등 ICT 신기술의 발달로 인해 이전보다 다양한 서비스가 개발되고 있으며 이를 대국민 서비스 개선의 도구로 활용하여 국민과의 거리감을 좁히고 서비스 만족도 향상에 기여하고 있다. 그러나 사업담당자들은 빠른기술 발전에 비해 정보 및 기술을 습득하는데 어려움을 겪고 있다. 본 논문은 지자체를 중심으로 웹2.0 기반 전자정부서비스의 현황을 살펴보고 사업담당자 입장에서의 정보보호 대책을 제시하고자 한다.