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Formation and Related-Behavior of Micro-bowl Morphology Consisting of Ionic Palladium(II) Complexes
Cho Rong Kim,Chi Won Kim,노태환,이영아,Jongki Hong2,,정옥상 대한화학회 2010 Bulletin of the Korean Chemical Society Vol.31 No.8
Reaction of [(bpy)Pd](PF6)2 (bpy = 2,2'-bipyridine) with racemic bis(isonicotinoyl)-1,1'-bi-2-naphtholate (L) in acetone,and followed by addition of chloroform and solvent evaporation allows to form amorphous micro-bowl morphology consisting of [(bpy)PdL]2(PF6)4 without any template or additive. In contrast, the reaction and recrystallization in acetone for 1 week produce parallel-piped single crystals consisting of [(bpy)3Pd3(μ3-HPO4)2](PF6)2. The formations of micro-bowl and parallel-piped single crystal morphologies appear to be primarily associated with the kinetic and thermodynamic control, respectively. The formation of micro-bowls may be attributed to eruption of organic solvents. Cosolvent effects and chemical properties on the formation of micro-bowl morphology have been observed.
갑상샘의 미만성 경화아형 유두상암의 1예 보고: 초음파와 컴퓨터 단층촬영 영상
김흥철,남궁숙,홍명선,황임경,김한준<SUP>1<.SUP>,최영희<SUP>2<.SUP>,Heung Cheol Kim,M.D.,Sook Namkung,M.D.,Myong Son Hong,M.D.,Im Kyung Hwang,M.D.,Han Joon Kim,M.D.<SUP>1<.SUP> and Young Hee Choi,M.D.<SUP>2<.SUP> 대한갑상선-내분비외과학회 2008 The Koreran journal of Endocrine Surgery Vol.8 No.1
We report here on a case of diffuse sclerosing papillary carcinoma (DSPC), which is a subtype of papillary carcinoma of thyroid, in a 27-year-old female. The ultrasound images showed diffuse enlargement of the thyroid lobes and this was associated with underlying diffuse scattered microcalcifications and a heterogeneous hypoechoic background parenchyma that was without any masses. The CT image showeddiffuse scattered dot-like hyperdensities with bilateral multiple metastastic lymph nodes. Because making the cytological diagnosis of DSPC is still challenging, the radiological findings that show this disease's characteristic features may be important clues for making the correct diagnosis. <B>(Ko</B><B></B><B>rean J Endocrine Surg 2008;8:43-47)</B>
Young-Chul Kim,Hyun-Hee Chae,Sang-Heock Oh,Seung-Ho Choi2,Moon-Pyo Hong3,Gi-Heum Nam,Jae-Yoon Choi,Hyun-Sook Choi,Kyu-Song Lee 한국환경생태학회 2015 한국환경생태학회지 Vol.29 No.2
Yongneup wetland protected area, the only high moor in Korea, is a core area to conserve biodiversity. Even though the Yongneup wetland protected area is relatively small, various plant species are distributed in the Yongneup wetland protected area because it includes various habitats showing different environmental gradients. Vascular plants distributed in the Yongneup wetland protected area were identified as a total of 376 taxa that is composed of 73 families, 217 genera, 322 species, 3 subspecies, 44 varieties and 7 forms. For endangered plants designated by the Ministry of Environment, 5 species including Trientalis europaea var. arctica, Lilium dauricum, Halenia corniculata, Lychnis wilfordii and Menyanthes trifoliata were found and 34 taxa were confirmed to be distributed only in the mountainous wetland habitats. Regarding naturalized plants, a total of 11 taxa were distributed, but most of them were distributed in the areas where artificial interference has occurred. And in areas inside the wetlands that are relatively well preserved, 2 species of Bidens frondosa and Erigeron annuus were observed. In this study, the occurrence and distribution of Pseudostellaria baekdusanensis M. Kim, which was recently found in Mt. Baekdu and reported as a new species, were identified in the Yongneup wetland protected area. A wetland is a very vulnerable area to drastic environmental changes and damages to its ecosystem could cause the extinction of rare plant species which are distributed only in the wetlands. Therefore, it is mandatory that current status of the Yongneup wetland protected area is evaluated and actions to prevent rapid environmental changes are taken. Fourteen separate investigations were conducted in 2013 and another four in 2014, to evaluate current status of the Yongneup wetland protected area. These investigations have provided us the basic information for future actions of conservation and restoration.
Clinical and histological significance of atypical glandular cells on cervical cytology(초)
최홍준 ( Hong Jun Choi ),( Woo Chul Kim ),( Ho Soap Hahn ),( Seok Geun Yoon ),( Yong Soon Kwon ),( In Ho Lee ),( Kyung Taek Lim ),( Ki Heon Lee ),( Jae UK Shim ),( Jung Eun Mok ),( Yi Kyeong Chun2 ),( Ta 대한산부인과학회 2009 대한산부인과학회 학술대회 Vol.95 No.-
A New 5α,8α-Epidioxy Sterol from a Marine Sponge Psammocinia Species
Hye Jin Park1,,Xuan Luo1,,Jongki Hong2,,Dong-kyoo Kim3,,Kwang Sik Im1, and,Jee H. Jung1* 한국생약학회 2005 Natural Product Sciences Vol.11 No.4
An investigation of the MeOH soluble fractions of a marine sponge Psammocinia sp. (Order:Dictyoceratida) led to the isolation of a new epidioxy sterol (1) and four known sterols (2-5). Their planarstructures were defined by analyses of the spectroscopic data. The 27-nor-24-methylcholestan type side chain withan epidioxy nucleus (1) was unprecedented. Compounds 1-5 were isolated from a sponge Psammocinia sp. for the first time.
( Jia Cheng ),( Na Sun ),( Xin Zhao ),( Li Niu ),( Mei Qin Song ),( Yao Gui Sun ),( Jun Bing Jiang ),( Jian Hua Guo2 ),( Yuan Sheng Bai ),( Jun Ping He ),( Hong Quan Li ) 한국미생물 · 생명공학회 2013 Journal of microbiology and biotechnology Vol.23 No.8
Seventeen compounds derived from traditional Chinese medicines (TCMs) were tested for their antiviral activity against porcine reproductive and respiratory syndrome virus (PRRSV) in vitro. Visualization with the cytopathologic effect (CPE) assay and the 3-(4, 5-dimethyithiazol- 2-yl)-2,5-diphenyltetrazolium bromide test were used to determine the 50% cytotoxic concentration (CC50) and 50% effective concentration (EC50) in cultured Marc-145 cells. Among the tested compounds, chlorogenic acid and scutellarin showed potential anti-PRRSV activity. The EC50 values were 270.8 ± 14.6 μg/ml and 28.21 ± 26.0 μg/ml and the selectivity indexes were >5.54 and 35.5, respectively. The time-of-addition and virucidal assay indicated that the anti-PRRSV activity of the two compounds could be due to their inhibiting the early stage of virus replication and/or inactivating the virus directly. The inhibition of the virus attachment was not observed in the adsorption inhibition assay. The inhibition ratios of chlorogenic acid and scutellarin were, respectively, 90.8% and 61.1% at the maximum non-cytotoxic concentrations. The results have provided a basis for further exploration of their antiviral properties and mechanisms in vivo. We believe that the chlorogenic acid and scutellarin have a great potential to be developed as new anti-PRRSV drugs for clinical application.
세포검사 결과 여포성 종양으로 진단된 갑상선 결절에서 암의 위험성과 수술 후 소견
김은숙<SUP>1<,SUP>,남궁일성,공경엽<SUP>2<,SUP>,홍석준<SUP>3<,SUP>,김원배,송영기,Eun Sook Kim,M,D,<SUP>1<,SUP>,Il Sung Nam-Goong,M,D,Gyeongyub Gong,M,D,<SUP>2<,SUP>,Suck Joon Hong,M,D,<SUP>3<,SUP>,Won Bae Kim,M,D,and You 대한갑상선-내분비외과학회 2002 The Koreran journal of Endocrine Surgery Vol.2 No.2
Purpose: To assess the prevalence and the risk of malignancy in thyroid nodules which were cytologically diagnosed as follicular neoplasm by fine-needle aspiration (FNA) cytology. Methods: All the patients who had undergone surgery with cytological diagnosis of follicular neoplasm from January 1996 through December 2001 in Asan Medical Center were studied retrospectively. Patients' and nodule characteristics were analyzed for factors associated with the presence of cancer. Results: Two hundreds and fifteen patients (196 females, 19 males) were included and their mean age was 39.4 years (range: 12∼76). About half of the patients (102 out of 215, 47.4%) had malignancy with 29 papillary carcinomas, 57 follicular carcinomas, 15 Hürthle cell carcinomas, and 1 medullary carcinoma. Previously suggested factors associated with risk for malignancy such as male gender, large tumor size (>4 cm), or age of patients (>45 years), were not associated with increased risk. Diagnosis of Hürthle cell neoplasia on FNA was also not associated with increased risk. Only the extreme age of the patients (below 20 or above 60 years) was associated with increased risk for malignancy. Conclusion: By our hands, prevalence of carcinoma in thyroid nodule patients with cytological diagnosis of follicular neoplasm was much higher than those reported. Clinical characteristics such as male gender, age, and nodule size, are not useful predictors for the presence of malignancy. Thyroid nodules with cytological diagnosis of follicular neoplasm warrant immediate surgery without any further work up. (Korean J Endocrine Surg 2002;2:105-108)