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Analysis of acne-related judicial precedents from 1997 to 2018 in South Korea
( Ji Hoon Yang ),( Soo Ick Cho ),( Su Hwan Shin ),( Won Lee ),( So Yoon Kim ),( Dae Hun Suh ) 대한피부과학회 2019 대한피부과학회 학술발표대회집 Vol.71 No.2
Background: Medicolegal disputes are increasing in practical medicine. Acne is a common problem but is usually related to cosmetic problems such as acne scars. Medications or procedures related to acne could lead to medical malpractice. Objectives: To analyze medical litigation associated with acne or acne scar in South Korea. Methods: Acne-related judgements were searched using the Supreme Court of Korea’s Written Judgment Management System based on the keywords “acne” or “acne scar.” Results: Eleven cases were selected as litigated cases of acne or acne scar. Eight cases (72.7%) were related to acne scar and three (27.3%) were related to acne. Treatment modalities such as peeling (n = 6), laser treatment (n = 3), photodynamic therapy (n = 1), and antibiotic (n = 1) resulted in lawsuit. Claimed sequelae of the treatment were hyperpigmentation (n = 5), scar worsening (n = 5), erythema (n = 3), skin bumps (n = 1), and liver transplant (n = 1). Eight cases (72.7%) were awarded to the plaintiff, and the others were dismissed. The average awarded amount was 16,801,324± 24,452,486 (mean±standard deviation) Korean Won. Conclusion: Various treatments for acne or acne scar can cause medical disputes. Unnecessary litigation could be prevented if simple measures such as history taking, choosing proper procedure, and adequate management after the procedure along with sufficient informed consent were performed.
Solar urticaria in Korean patients
( Sung Min Kim ),( Young Ah Cho ),( Ji Su Lee ),( Ji Youn Hong ),( Jin Hee Kim ),( Joo Ran Hong ),( Hye In Cheon ),( Yang Won Lee ),( Yong Beom Choe ),( Kyu Joong Ahn ) 대한피부과학회 2020 대한피부과학회 학술발표대회집 Vol.72 No.1
Background: Solar urticaria (SU) is an uncommon type of photodermatoses characterized by erythematous wheal with pruritus after sunlight exposure, which shows a female predominance. Only a few studies to analyze the clinical features of SU were reported in Asia. Objectives: We aimed to analyze the clinical and photobiological characteristics of SU in Korea. Methods: We retrospectively investigated the medical records of patients with SU who visited the department of dermatology, Konkuk university medical center from January 2005 to January 2020. Results: Of a total of 44 patients, 36 (81.8%) were male and 8 (18.2%) were female. The mean age at onset was 17.6 years (range, 5-47) and the mean threshold time was 19.7 minutes. Among 32 patients who underwent phototesting, the action spectrum most commonly implicated was ultraviolet (UV) A only in 12 (37.5%), and then visible light (415nm) only was responsible for SU in 8 (25.0%). Three patients (9.4%) were induced by both UVA and visible light (415nm). Even 4 patients (12.5%) were triggered by only natural sunlight. Serum immunoglobulin E levels were measured in 33 patients, and 17 (51.5%) showed values higher than normal. The treatment most widely used were oral antihistamine (43.2%), followed by phototherapy (13.6%). Conclusion: SU is a rare photodermatosis in Korea, which shows a male preponderance. In this study, UVA and visible light (415nm) were predominant action spectrum of SU.
Geometric Transformation Invariant Fast Image Identifier
Won-Keun Yang,Ayoung Cho,In-su Won,Sang-Il Na,Weon-Geun Oh,Dong-Seok Jeong 한국멀티미디어학회 2008 한국멀티미디어학회 학술발표논문집 Vol.2008 No.2
Image identifier can be used in finding original images from the large database of geometrically transformed images. In this paper, geometric transformation invariant fast image identifier is introduced. Proposed identifier consists of three different features. Used features are color feature, texture feature by Modified Generalized Symmetry Transform and angular partitioning feature. Each feature is quantized adaptively to compose three-dimensional histogram. For fast matching, pre-screening with bit-stream is used. Experimental results show that the proposed image identifier has good performance under various geometric transformations. And because of its fast matching, the proposed image identifier is very useful in real environment.
Yang, Rui,Yang, Su-Geun,Shim, Won-Sik,Cui, Fude,Cheng, Gang,Kim, In-Wha,Kim, Dae-Duk,Chung, Suk-Jae,Shim, Chang-Koo Wiley Subscription Services, Inc., A Wiley Company 2009 Journal of Pharmaceutical Sciences Vol.98 No.3
<P>Chitosan-modified paclitaxel-loaded poly lactic-co-glycolic acid (PLGA) nanoparticles with a mean diameter of 200–300 nm in distilled water were prepared by a solvent evaporation method. The mean diameter increased dramatically in contact with the mouse (CDF<SUB>1</SUB>) plasma, as a function of chitosan concentration in the modification solution (e.g., 2670.5 nm for 0.7% chitosan-modified nanoparticles, NP<SUB>3</SUB>), but reverted to almost its original size (i.e., 350.7 nm for NP<SUB>3</SUB>) following 5 min of gentle agitation. The zeta potential of PLGA nanoparticles was changed to positive by the chitosan modification. The in vitro uptake into, and cytotoxicity of the nanoparticles against, a lung cancer cell line (A549) were significantly increased by the modification. Most importantly, a lung-specific increase in the distribution index of paclitaxel (i.e., AUC<SUB>lung</SUB>/AUC<SUB>plasma</SUB>) was observed for chitosan-modified nanoparticles (e.g., 99.9 for NP<SUB>3</SUB> vs. 5.4 for Taxol™) when nanoparticles were administered to lung-metastasized mice via the tail vein at a paclitaxel dose of 10 mg/kg. Transient formation of aggregates in the blood stream followed by enhanced trapping in the lung capillaries, and electrical interaction-mediated enhanced uptake across the endothelial cells of the lung tumor capillary appear to be responsible for the lung-tumor-specific distribution of the chitosan modified nanoparticles. © 2008 Wiley-Liss, Inc. and the American Pharmacists Association J Pharm Sci 98:970–984, 2009</P>
Distribution of Malassezia Species on the Scalp in Korean Seborrheic Dermatitis Patients
( Yang Won Lee ),( Hee Jin Byun ),( Beom Joon Kim ),( Dong Ha Kim ),( Yun Young Lim ),( Jin Woong Lee ),( Myeung Nam Kim ),( Dong Hak Kim ),( Young Jin Chun ),( Seog Kyun Mun ),( Chan Woong Kim ),( Su 대한피부과학회 2011 Annals of Dermatology Vol.23 No.2
Background: Malassezia species play an important role in the pathogenesis of seborrheic dermatitis. In particular, M. restricta and M. globosa are considered to be the predominant organisms in seborrheic dermatitis of Western countries. However, species distribution of Malassezia in seborrheic dermatitis has not been clearly determined yet in Asia. Objective: To identify the distribution of Malassezia species on the scalp of seborrheic dermatitis patients in Korea using 26S rDNA PCR-RFLP analysis. Methods: A total of 40 seborrheic dermatitis patients and 100 normal healthy volunteers were included in this study. For the identification of Malassezia species, the scalp scales of the subjects were analyzed by 26S rDNA PCR-RFLP analysis. Results: The most commonly identified Malassezia species were M. restricta in the seborrheic dermatitis patients, and M. globosa in the normal controls. In the seborrheic dermatitis group, M. restricta was identified in 47.5%, M. globosa in 27.5%, M. furfur in 7.5%, and M. sympodialis in 2.5% of patients. In the healthy control group, M. globosa was identified in 32.0%, M. restricta in 25.0%, M. furfur in 8.0%, M. obtusa in 6.0%, M. slooffiae in 6.0%, and M. sympodialis in 4.0% of subjects. Conclusion: M. restricta is considered to be the most im portant Malassezia species in Korean seborrheic dermatitis patients. (Ann Dermatol 23(2) 156∼161, 2011)
Yang, Su Hui,Song, Chin-Hee,Van, Hue Thi My,Park, Eunsook,Khadka, Daulat Bikram,Gong, Eun-Yeung,Lee, Keesook,Cho, Won-Jea American Chemical Society 2013 Journal of medicinal chemistry Vol.56 No.8
<P>Molecular knowledge of pure antagonism and systematic SAR study offered a direction for structural optimization of DIMN to provide nicotinamides as a novel series of AR antagonists. Nicotinamides with extended linear scaffold bearing sterically bulky alkoxy groups on isoquinoline end were synthesized for H12 displacement. AR binding affinity and molecular basis of antiandrogenic effect establish the optimized derivatives, <B>7au</B> and <B>7bb</B>, as promising candidates of second generation AR antagonists for advanced prostate cancer.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jmcmar/2013/jmcmar.2013.56.issue-8/jm3014103/production/images/medium/jm-2012-014103_0011.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/jm3014103'>ACS Electronic Supporting Info</A></P>
Yang, Yoon-Mo,Won, Young-Bin,Ji, Chang-Jun,Kim, Jung-Hoon,Ryu, Su-Hyun,Ok, Youn-Ha,Lee, Jin-Won Elsevier 2018 Biochemical and biophysical research communication Vol.502 No.1
<P><B>Abstract</B></P> <P>Molybdenum cofactor (Moco), molybdopterin (MPT) complexed with molybdenum, is an essential cofactor required for the catalytic center of diverse enzymes in all domains of life. Since Moco cannot be taken up as a nutrient unlike many other cofactors, Moco requires <I>de novo</I> biosynthesis. During the synthesis of MPT, the sulfur atom on the C-terminus of MoaD is transferred to cyclic pyranopterin monophosphate (cPMP) which is bound in the substrate pocket of MoaE. MoaD is a ubiquitin-like (Ubl) protein and has a C-terminal di-Gly motif which is a common feature of Ubl proteins. Despite the importance of free C terminal di-Gly motif of MoaD as a sulfur carrier, some bacteria encode a fused MPT synthase in which MoaD- and MoaE-like domains are located on a single peptide. Although it has recently been reported that the fused MPT synthase MoaX from <I>Mycobacterium tuberculosis</I> is posttranslationally cleaved into functional MoaD and MoaE in <I>M. smegmatis</I>, the protease responsible for the cleavage of MoaD-MoaE fusion protein has remained unknown to date. Here we report that the JAMM/MPN<SUP>+</SUP> domain containing metalloprotease DR0402 (JAMM<SUB>DR</SUB>) from <I>Deinococcus radiodurans</I> can cleave the MoaD-MoaE fusion protein DR2607, the sole MPT synthase in <I>D. radiodurans</I>, generating the MoaD having a C-terminal di-Gly motif. Furthermore, JAMM<SUB>DR</SUB> can also cleave off the MoaD from MoaD-eGFP fusion protein suggesting that JAMM<SUB>DR</SUB> recognizes the MoaD region rather than MoaE region in the cleaving process of MoaD-MoaE fusion protein.</P> <P><B>Highlights</B></P> <P> <UL> <LI> <I>D. radiodurans</I> encodes a fused MPT synthase, MoaD-MoaE fusion protein DR2607. </LI> <LI> JAMM/MPN<SUP>+</SUP> metalloprotease DR0402 (JAMM<SUB>DR</SUB>) can cleave the MoaD-MoaE fusion. </LI> <LI> JAMM<SUB>DR</SUB> recognizes the MoaD region in the cleavage process of MoaD-MoaE fusion. </LI> </UL> </P>
Middle East Respiratory Syndrome in 3 Persons, South Korea, 2015
Yang, Jeong-Sun,Park, SungHan,Kim, You-Jin,Kang, Hae Ji,Kim, Hak,Han, Young Woo,Lee, Han Saem,Kim, Dae-Won,Kim, A-Reum,Heo, Deok Rim,Kim, Joo Ae,Kim, Su Jin,Nam, Jeong-Gu,Jung, Hee-Dong,Cheong, Hyang- U.S. Department of Health and Human Services * Cen 2015 Emerging Infectious Diseases Vol.21 No.11
<P>In May 2015, Middle East respiratory syndrome coronavirus infection was laboratory confirmed in South Korea. Patients were a man who had visited the Middle East, his wife, and a man who shared a hospital room with the index patient. Rapid laboratory confirmation will facilitate subsequent prevention and control for imported cases.</P>