http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Jeong Min Lee,Dong-Gu Lee,Sunghun Cho,Jung Jong Lee,Myoung-Hee Lee,Sanghyun Lee 한국육종학회 2014 한국육종학회 심포지엄 Vol.2014 No.07
Acanthopanax species is known commonly as Siberian ginseng, touch-me-not, devil’s shrub, prickly eleutherococc, eleutherococc and wild pepper. A diverse group of chemical compounds isolated from Acanthopanax species was named ‘eleutherosides’. Among eleutherosides, eleutherosides B and E were widely known in Acanthopanax species. Acanthopanax species are cultivated and grow wild in a various area of Korea and have a variety of pharmacological effects. But, there are a lot of difficulties on producing excellent Acanthopanax species, according to the cultivated method is different pharmacological ingredients. This study, therefore, analyzed eleutherosides B and E in A. divaricatus and A. koreanum by different fertilizer ratio using HPLC. We will be investigated a high content of eleutherosides B and E by different fertilizer ratio and suggest an efficient fertilizer ratio of A. divaticatus and A. koreanum. All samples of A. divaricatus and A. koreanum were collected at Yeongcheon Agricultural Technology & Extension Center, Yeongcheon, Korea. The sample was prepared by upper and lower parts. The fertilizer ratio are N-P-K(10.5-8.5-8.5: 50 kg/10a), 2N-P-K (21-8.5-8.5: 50 kg/10a), N-2P-K (10.5-17-8.5: 50 kg/10a), N-P-2K (10.5-8.5-17: 50 kg/10a), and 2N-2P-2K (21-17-17: 50 kg/10a), respectively. To analyze eleutherosides B and E, 5 g of A. divaricatus and A. koreanum was extracted with 50% MeOH (3 × 100 ml) by reflux and evaporated in vacuo. The residue was dissolved in 1 ml of MeOH. The resulting solution was used for HPLC analysis. HPLC separation of eleutherosides B and E for qualitative and quantitative analysis was performed using a reverse phase system. A Discovery®C18 (4.6 × 250 mm, 5 μm) column was used with a mobile phase that consisted of water and acetonitrile. A gradient solvent system of water and acetonitrile (90:10 to 70:30 for 20 min) was used for the elution program. UV detection was conducted at 350 nm. The injection volume was 10 μl and the flow rate was 1 ml/min. All injections were performed in triplicate. The different fertilizer ratio yielded total eleutherosides B and E contents of 4.417-6.905 and 3.652-7.227 mg/g in the upper and lower parts of A. divaricatus, respectively. In A. koreanum, the total eleutherosides B and E contents were 4.591-10.108 and 3.834-9.079 mg/g in the upper and lower parts, respectively. The best conditions to increase eleutherosides B and E content in A. divaricatus was determined to be with N-2P-K fertilizer ratio, on the other hand, in A. koreanum was 2N-2P-2K fertilizer ratio.
Associations of night shift status during pregnancy with birth outcomes
Se Jin Lee(Se Jin Lee),Chorong Kim(Chorong Kim),Eun Ju Lee(Eun Ju Lee),Myoung-Nam Lim(Myoung-Nam Lim),Jeeyoung Kim(Jeeyoung Kim),Sunghun Na(Sunghun Na),Woo Jin Kim(Woo Jin Kim),Ko-CHENS study group(Ko 한국환경보건학회 2022 한국환경보건학회 학술대회 자료집 Vol.2022 No.5
Lee, Sunghun,Lee, Jeong‐,Hwan,Lee, Jae‐,Hyun,Kim, Jang‐,Joo WILEY‐VCH Verlag 2012 Advanced Functional Materials Vol.22 No.4
<P><B>Abstract</B></P><P>The rate‐limiting step of charge generation in charge‐generation units (CGUs) composed of a p‐doped hole‐transporting layer (p‐HTL), 1,4,5,8,9,11‐hexaazatriphenylene hexacarbonitrile (HATCN) and n‐doped electron‐transporting layer (n‐ETL), where 1,1‐bis‐(4‐bis(4‐methyl‐phenyl)‐amino‐phenyl)‐cyclohexane (TAPC) was used as the HTL is reported. Energy level alignment determined by the capacitance–voltage (<I>C</I>–<I>V</I>) measurements and the current density–voltage characteristics of the structure clearly show that the electron injection at the HATCN/n‐ETL junction limits the charge generation in the CGUs rather than charge generation itself at the p‐HTL/HATCN junction. Consequently, the CGUs with 30 mol% Rb<SUB>2</SUB>CO<SUB>3</SUB>‐doped 4,7‐diphenyl‐1,10‐phenanthroline (BPhen) formed with the HATCN layer generates charges very efficiently and the excess voltage required to generate the current density of ±10 mA cm<SUP>−2</SUP> is around 0.17 V, which is extremely small compared with the literature values reported to date.</P>
Lee, Sunghun,Lee, Dong Hun,Park, Bong-Woo,Kim, Riyoun,Hoang, Anh Duc,Woo, Sang-Keun,Xiong, Wenjun,Lee, Yong Jin,Ban, Kiwon,Park, Hun-Jun Nature Publishing Group UK 2019 Experimental and molecular medicine Vol.51 No.2
<▼1><P>Vascular regeneration in ischemic hearts has been considered a target for new therapeutic strategies. It has been reported that ETV2 is essential for vascular development, injury-induced neovascularization and direct cell reprogramming of non-endothelial cells into endothelial cells. Thus, the objective of this study was to explore the therapeutic potential of ETV2 in murine models of myocardial infarction in vivo. Direct myocardial delivery of lentiviral ETV2 into rodents undergoing myocardial infarction dramatically upregulated the expression of markers for angiogenesis as well as anti-fibrosis and anti-inflammatory factors in vivo. Consistent with these findings, echocardiography showed significantly improved cardiac function in hearts with induced myocardial infarction upon ETV2 injection compared to that in the control virus-injected group as determined by enhanced ejection fraction and fractional shortening. In addition, ETV2-injected hearts were protected against massive fibrosis with a remarkable increase in capillary density. Interestingly, major fractions of capillaries were stained positive for ETV2. In addition, ECs infected with ETV2 showed enhanced proliferation, suggesting a direct role of ETV2 in vascular regeneration in diseased hearts. Furthermore, culture media from ETV2-overexpressing cardiac fibroblasts promoted endothelial cell migration based on scratch assay. Importantly, intramyocardial injection of the adeno-associated virus form of ETV2 into rat hearts with induced myocardial infarction designed for clinical applicability consistently resulted in significant augmentation of cardiac function. We provide compelling evidence that ETV2 has a robust effect on vascular regeneration and enhanced cardiac repair after myocardial infarction, highlighting a potential therapeutic function of ETV2 as an efficient means to treat failing hearts.</P></▼1><▼2><P><B>Cardiovascular disease: New hope for healing the heart</B></P><P>A gene therapy strategy that stimulates cardiovascular repair could improve recovery for heart attack patients. Heart attacks inflict severe damage on the heart and blood vessels, tissues with limited capacity for self-repair. Researchers led by Kiwon Ban of the City University of Hong Kong and Hun-Jun Park of the Catholic University of Korea, Seoul, have now demonstrated that a gene responsible for cardiovascular development can also efficiently stimulate heart repair. They used viruses to deliver the gene into a mouse model of heart attack, and showed that treated heart tissues exhibited strong recovery relative to untreated controls. The treatment reduced scar tissue formation and promoted proliferation of the cells lining blood vessels and blood vessel formation, measurably improving heart function. This approach could lay the groundwork for treating a common potentially fatal event.</P></▼2>
Corpus luteal cyst Rupture with Tubal Abortion
( Darae Lee ),( Yoon Hyeon Hu ),( Chorong Kim ),( Tae Gyu Ahn ),( Hyang Ah Lee ),( Sunghun Na ),( Jong Yun Hwang ),( Dong Hun Lee ),( Se Jin Lee ) 대한산부인과학회 2020 대한산부인과학회 학술대회 Vol.106 No.-
Corpus luteum cyst rupture with consequent hemoperitoneum is a common disorder in women in their reproductive age. And ectopic pregnancy has also hemoperitoneum. Tubal abortion, which is a rare type of ectopic pregnancy, is characterized by the extrusion of an ectopic product of conception implanted in the fallopian tube through the abdominal ostium into the peritoneal cavity. A 39-year-old woman visited emergency room because of abnormal bleeding and lower abdominal pain since 3 days ago. She was an infertile patient. She had In vitro fertilization and embryo transfer a month ago, but she failed pregnancy and continued to had vaginal bleeding. In urine test, human chorionic gonadotropin (hCG) was positive. Ultrasonographic findings showed that the absence of an intrauterine gestational sac, with bilateral ovarian anechoic cyst and small echogenic free fluid in posterior Cul-de-Sac(PCDS). According to the blood test, beta-hCG was 3,679 mIU/mL and hemoglobin was 8.4 g/dL. The vital sign was stable. She was hospitalized and monitored, and the next morning on a blood test, beta-hCG dropped to 2,905mIU/mL and hemoglobin 7.3 g/dL. Ultrasound findings, fluid collection was increased, and emergency surgery was determined. In the surgical findings, hematoma of the right fallopian tube was observed, cyst rupture was found in the right ovary, and ovarian cyst was also observed in the left ovary. She had right salpingectomy, bilateral ovarian cystectomy, and dilatation and curettage with biopsy. Pathologic results were hematoma in tubal lumen, hemorrhagic corpus luteal cyst. In uterine endometrium, there are proliferative glands with predecidualized stroma. After surgery, she was received routine post-operation care and discharged home. We report a rare hemoperitoneum case in which both hemorrhagic corpus luteal cyst and tubal abortion developed simultaneously.
Clinical characteristics of pyometra: 10-year experience from a single institution
( Darae Lee ),( Yung-taek Ouh ),( Heejoo Hong ),( Boram Lee ),( Chorong Kim ),( Yoon Hyeon Hu ),( Tae Yeon Kim ),( Se Jin Lee ),( Tae Gyu Ahn ),( Hyang Ah Lee ),( Sunghun Na ),( Jong Yun Hwang ),( Don 대한산부인과학회 2021 대한산부인과학회 학술대회 Vol.107 No.-
Lee, Sunghun,Kim, Jinsu,Park, Yun Chang,Chun, Seung-Hyun The Royal Society of Chemistry 2019 Nanoscale Vol.11 No.2
<P>Two-dimensional (2D) transition metal dichalcogenides with van der Waals gaps have attracted much attention due to their peculiarly distinctive physical properties from their bulk counterparts. Among them, vanadium diselenide (VSe2) has been considered to be a promising candidate for future spintronic devices, as room temperature ferromagnetism was reported recently. However, detailed crystallography and properties of VSe2 nanosheets have been less explored. Here, we report the atomistic real-space observation of the van der Waals layered structure of VSe2 for the first time. Furthermore, simply by controlling the carrier gas flow rate, a morphological variation of the surface area and thickness of VSe2 nanosheets was observed. The room temperature ferromagnetic feature of single VSe2 nanosheets was also revealed by magnetic force microscopy measurements. Our findings will play a significant role in the research of intrinsic 2D ferromagnetic materials.</P>