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과실이 크고 품질이 우수한 조생종 배 ‘금촌조생’ 육성
조광식(Kwang-Sik Cho1),손동수(Dong-Soo Son),강삼석(Sam-Seok Kang),김명수(Myung-Su Kim),홍경희(Kyung-Hui Hong),윤석규(Seok-Kyu Yun),조강희(Gang-Hui Cho),조현모(Hyeon-Mo Cho) 한국원예학회 2004 원예과학기술지 Vol.22 No.1
‘Geumchonjosaeng’ pear cultivar (Pyrus pyrifolia var. culta Nakai) originated from the cross between ‘Imamuraaki’ and ‘Danbae’ to improve the fruit quality of ‘Imamuraaki’ cultivar in 1971 at Naju Pear Research Institute of National Horticultural Research Institute (NHRI), Rural Development Administration (RDA). It was preliminarily selected in 1982 and named in 2001. The tree habit shows vigorous growth and upright spreading. It carries abundant pollen grains and shows cross compatibility with leading cultivars. Also it shows high resistance to black leaf spot (Alternaria kikuchiana) in the field condition. Optimum harvest time is around Sep. 3, which is 5 days later than that of ‘Wonwhang’, and it could satisfy consumer’s demand for high quality pear fruit in “Chuseok”. The obovate fruit shape resembles maternal parent, ‘Imamuraaki’ and skin color is green yellowish brown at normal harvesting time and gradually turned to yellowish brown at full ripennig state. Fruit weighs about 593 g, and the soluble solid content is 13.5 ˚Bx. The flesh is very soft and juicy and, rendering good eating quality. Shelf life is about 20 days under the ambient temperature, and it is a relatively long period as compare with other early season cultivars.
고속의 GaAs SRAM 을 위한 새로운 센스 앰프의 설계 연구
조희철,김선옥,이웅호,윤진섭,이진구 동국대학교 산업기술대학원 1993 산업기술논문집 Vol.1 No.-
A new sense amplifier is designed in order to realize high-speed GaAs SRAM's. The Schematics are similar to "a source coupled differential amplifier" execept that two analyzed using basic FET current equations. The transconductance of the new sense amplifier is approximately 3.5 times larger than that of the conventional sense amplifier. Output high voltage is reduced to about 0.64V, therefore, the time which reached V_(max) are reduced also. The simulation results show that the access time of 0.9ns and the power dissipation of 12.2mW are achieved in GaAs 16bit SRAM's.
α1,3-Gal Knock out Pigs Increases N-Glycolylneuraminic Acids
Jong-Yi Park,Mi-Ryung Park,Hong-Thuy Bui,Deug-Nam Kwon,Min-Hui Kang,Mihye Oh,Jae-Woong Han,Ssang-Goo Cho1,Chankyu Park,Hosup Shim,Hye-Min Kim,Man-Jong Kang,Jin-Ki Park,Jeong-Woong Lee,Kyung-Kwang Lee 한국동물번식학회 2012 Reproductive & Developmental Biology(Supplement) Vol.36 No.2s
In this study, we examined whether Hanganutziu-Deicher (H-D) antigens are important as an immunogenic non-a1,3-galactose (Gal) epitope in pigs with a disrupted a1,3- galactosyltransferase gene. The targeting efficiency of the AO blood genotype was achieved (2.2%) in pig fibroblast cells. A total of 1800 somatic cell nuclear transfer (SCNT) embryos were transferred to 10 recipients. One recipient developed to term and naturally delivered two piglets. The a1,3-galactosyltransferase activity in lung, liver, spleen, and testis of heterozygote a1,3-galactosyltransferase gene knockout (GalT-KO) pigs was significantly decreased, whereas brain and heart showed very low decreasing levels of a1,3- galactosyltransferase activity when compared to those of control. Enzyme-linked lectinosorbent assay showed that the heterozygote GalT-KO pig had more sialyla2,6- and sialyla2,3- linked glycan than the control. Furthermore, the heart, liver, and kidney of the heterozygote GalT-KO pig had a higher N-glycolylneuraminic acid (Neu5Gc) content than the control, whereas the lung of the heterozygote GalT-KO pig had Neu5Gc content similar to the control. Collectively, the data strongly indicated that Neu5Gc is a more critical xenoantigen to overcoming the next acute immune rejection in pig to human xenotransplantation.
Clinical Experience of Rigid Bronchoscopy in Single Center
Kim, Hyun-Jin,Kim, Sei-Won,Lee, Hye-Yeon,Kang, Hyeon-Hui,Kang, Ji-Young,Kim, Ju-Sang,Kim, Myung-Sook,Kim, Seung-Soo,Kim, Jin-Woo,Yun, Hyeong-Gyu,Kim, Chi-Hong,Kim, Kwan-Hyoung,Moon, Hwa-Sik,Cho, Kwang The Korean Academy of Tuberculosis and Respiratory 2012 Tuberculosis and Respiratory Diseases Vol.72 No.6
Background: The aim of this study was to analyze clinical situations requiring rigid bronchoscopy and evaluate usefulness of rigid bronchoscopic intervention in benign or malignant airway disorders. Methods: We retrospectively reviewed 29 patients who underwent rigid bronchoscopy from November 2007 to February 2011 at St. Paul's Hospital, The Catholic University of Korea School of Medicine. Results: Of the 29 patients, the most frequent underlying etiology was benign stenosis of trachea (n=20). Of those 20 patients, 16 had post-intubation tracheal stenosis (PITS), 2 had tracheal stenosis due to inhalation burn (IBTS) and other 2 had obstructive fibrinous tracheal pseudomembrane (OFTP). Other etiologies were airway malignancy (n=6), endobronchial stenosis due to tuberculosis (n=2), and foreign body (n=1). For treatment, silicone stent insertion was done in 16 cases of PITS and IBTS and mechanical removal was performed in 2 cases of OFTP. In 6 cases of malignant airway obstruction mechanical debulking was performed and silicone stents were inserted additionally in 2 cases. Balloon dilatation and electrocautery were used in 2 cases of endobronchial stenosis due to tuberculosis. In all cases of stent, airway obstructive symptom improved immediately. Granulation tissue formation was the most common complication. Conclusion: Tracheal stenosis was most common indication and silicone stenting was most common procedure of rigid bronchoscopy in our center. Rigid bronchoscopic procedures, at least tracheal silicone stenting, should be included in pulmonary medicine fellowship programs because it is a very effective and indispensable method to relieve critical airway obstruction which needs training to learn.
( Jin Ah Kim ),( Chang Wook Kim ),( Ji Young Kim ),( Yun Hui Kim ),( Mi Ju Cheon ),( Hee Yeon Kim ),( Jung Myung Kim ),( Yoo Dong Won ),( Se Hyun Cho ),( Jong Young Choi ),( Seung Kew Yoon ),( Nam Ik 대한간학회 2017 춘·추계 학술대회 (KASL) Vol.2017 No.1
Aims: Immune regulatory molecules such as forkhead box P3 (FoxP3), programmed death-1 (PD-1) and cytotoxic T-lymphocyte-associated protein-4 (CTLA-4) on T cell are associated with antiviral effector T cell dysfunction, which influences on T cell exhaustion and persistent viral infection in patients with chronic hepatitis C (CHC) and chronic hepatitis B (CHB). These FoxP3, PD-1 and CTLA-4 are known to up-regulated in CHC and CHB but, there is few report about the phenotypic changes of these molecules during direct-acting antiviral (DAA) therapy, especially, Daclatasvir and asunaprevir (DCV+ASV) in genotype 1b CHC. We investigated the expression of FoxP3, PD-1 and CTLA-4 during 6 months DCV+ASV treatment in 19 patients with genotype 1b CHC. Methods: Nineteen patients with genotype 1b CHC under DCV+ASV treatment were enrolled for detection of intrinsic inhibitory molecules of T cell signals (PD-1, CTLA4) and extrinsic inhibitory molecule, FoxP3. Peripheral blood mononuclear cells (PBMC) were isolated from these subjects before treatment (T0), 1 month (T1), 3 month (T3), 6 month (T6) and 9 month (T9) during DCV+ASV treatment. The expressions of FoxP3, PD-1, CTLA-4, CD8, CD4 on T cells were monitored by flow cytometry. Results: T cells from patients with CHC before DCV+ASV treatment (T0) showed increased expression of FoxP3, PD-1 and CTLA-4 compared to healthy control. However, T cells from patients with CHC under DCV+ASV treatment showed decreased expression of PD1 and CTLA-4 at T6 compared to T0 significantly. Interestingly, the expression of Foxp3 was sustained at T6 through T0. Conclusions: In CHC, PD-1 and CTLA-4 as inhibitory T cell molecules were down-regulated during 6 months DCV+ASV therapy but, FoxP3 as regulatory T cell marker was sustained during DCV+ASV therapy. This phenomenon could be one of background mechanisms of post-DAA syndrome such as HCC development or reactivation of HBV coinfection after DAA therapy.
( Hui Bae Kim ),( Do Yeong Kim ),( Tae Ju Cho ) 생화학분자생물학회 2014 BMB Reports Vol.47 No.6
Turnip yellow mosaic virus (TYMV) is a spherical plant virus that has a single 6.3 kb positive strand RNA as a genome. In this study, RNA1 sequence of Flock house virus (FHV) was inserted into the TYMV genome to test whether TYMV can accommodate and express another viral entity. In the resulting construct, designated TY-FHV, the FHV RNA1 sequence was expressed as a TYMV subgenomic RNA. Northern analysis of the Nicotiana benthamiana leaves agroinfiltrated with the TY-FHV showed that both genomic and subgenomic FHV RNAs were abundantly produced. This indicates that the FHV RNA1 sequence was correctly expressed and translated to produce a functional FHV replicase. Although these FHV RNAs were not encapsidated, the FHV RNA having a TYMV CP sequence at the 3`-end was efficiently encapsidated. When an eGFP gene was inserted into the B2 ORF of the FHV sequence, a fusion protein of B2-eGFP was produced as expected. [BMB Reports 2014; 47(6): 330-335]
( Hui Jung Kim ),( Kang Suk Ko ),( Sang Bae Park ),( Hyeong Il Kim ),( Yang Tong Cho ),( Woong Ji Kim ),( Byung Jun Jeon ),( Hye Min Yu ),( Min Ju Song ),( Yun Kyung Hong ),( Wan Hee Yoo ) 전북대학교 의과학연구소 2007 全北醫大論文集 Vol.31 No.2
Vascular thrombosis in the venous or arterial system is quite common in systemic lupus erythematosus(SLE), especially in patients who have active disease with vasculitis and antiphospholipid antibodies(aPL). These thrombotic events usually developed on deep veins of the lower extremities and very rarely occur on the upper extremities. The upper extremity deep vein thrombosis(UEDVT) is a relatively rare disease, constituting about 2% of all cases of deep venous thrombosis, and usually occurs axially and subclavian vein. Here, we report an unusual case of brachial and basilica vein thrombosis in a 34-yr-old woman with SLE after taking oral contraceptives for 3months before the onset of upper-extremity deep vein thrombosis(UEDVT). Venous Doppler ultrasonography and CT images showed thrombosis and thrombophlebeitis of the brachial and basilica vein of the left arm. Thrombophilia work-up including IgM and IgG anticardiolipin antibodies, lupus anticoagulant were negative. Protein C, Protein S, and antithrombin 3 levels were within normal range. The patient was started anticoagulation therapy and oral contraceptives were discontinued. After that, she was asymptomatic and she had been treated with aspirin 100mg/day.
Cho, Hyejoung,Zheng, Hui,Sun, Qiaochu,Shi, Shuhan,He, YuZhu,Ahn, Kyuhyeon,Kim, Byunggook,Kim, Hye-Eun,Kim, Okjoon Hindawi 2018 Evidence-based Complementary and Alternative Medic Vol.2018 No.-
<P>Photodynamic therapy (PDT) is generally safer and less invasive than conventional strategies for head and neck cancer treatment. However, currently available photosensitizers have low selectivity for tumor cells, and the burden and side effects are so great that research is needed to develop safe photosensitizers. In this study, it was confirmed that the<I> Buddleja officinalis</I> (BO) extract, used in the treatment of inflammation and vascular diseases, shows fluorescence when activated by LED light, and, based on this, we aimed to develop a new photosensitive agent suitable for PDT. MTT, Diff-Quick® staining, and DCF-DA were performed to measure the effects of treating head and neck cancer cells with BO extract and 625 nm LED light (BO-PDT). Cell cycle, TUNEL, and western blot assays, as well as acridine orange staining, were performed to explore the mechanism of BO-PDT-induced cell death. We found that when the BO extract was irradiated with 625 nm LED light, it showed sufficient fluorescence and stronger intracellular toxicity and ROS effect than the currently commercially available hematoporphyrin. BO-PDT resulted in a decrease of mTOR activity that was correlated with an increase in the levels of ATG5, beclin-1, and LC3-II, which interfere with the formation of autophagosomes. In addition, BO-PDT induced the activation of PARP and led to an increase in the expression of proapoptotic protein Bax and a decrease in the expression of the antiapoptotic protein Bcl-2. Moreover, BO-PDT has been shown to induce the autophagy pathway 4 h after treatment, while apoptosis was induced 16 h after treatment. Finally, we confirmed that BO-PDT caused cell death of head and neck cancer cells via the intrinsic pathway. Therefore, we suggest that BO extract can be used as a new photosensitizer in PDT of head and neck cancer.</P>