http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
오늘 본 자료
Primary meningeal rhabdomyosarcoma associated with chronic subdural effusion
Lee, Ji Yeoun,Kim, Bo Sung,Phi, Ji Hoon,Kang, Hyoung Jin,Park, Sung-Hye,Wang, Kyu-Chang,Kim, Il Han,Cho, Byung-Kyu,Kim, Seung-Ki Journal of Neurosurgery Publishing Group 2010 Journal of Neurosurgery: Pediatrics Vol.5 No.2
<P>Primary sarcomas of the CNS are rare and are sometimes associated with chronic subdural effusion (SDE). Approximately 10 patients with such presentations have been reported. The authors report the case of a 5-year-old boy with multiple subdural masses and SDE. An SDE had been diagnosed when the patient was 2 months old, and he received a subduroperitoneal shunt when he was 5 months old. Since then, he had been clinically stable and well for 5 years. When he presented with acute headache, nausea, and vomiting, a newly developed tumor was found. Near-total resection of the tumor was performed, and the mass was diagnosed as an embryonal-type rhabdomyosarcoma. The child was given radiation therapy and 13 cycles of chemotherapy and is still free of disease 13 months after surgery.</P>
Repositioning disulfiram as a radiosensitizer against atypical teratoid/rhabdoid tumor
Lee, Young Eun,Choi, Seung Ah,Kwack, Pil Ae,Kim, Hak Jae,Kim, Il Han,Wang, Kyu-Chang,Phi, Ji Hoon,Lee, Ji Yeoun,Chong, Sangjoon,Park, Sung-Hye,Park, Kyung Duk,Hwang, Do Won,Joo, Kyeung Min,Kim, Seung- Oxford University Press 2017 Neuro-oncology Vol.19 No.8
<P>Conclusions. DSF and RT combination therapy has additive therapeutic effects on AT/RT by potentiating programmed cell death, including apoptosis and autophagy of AT/RT cells. We suggest that DSF can be applied as a radiosensitizer in AT/RT treatment.</P>
Rhodium N-Heterocyclic Carbene Catalyzed [4 + 2] and [5 + 2] Cycloaddition Reactions.
Lee, Sang Ick,Park, Se Yeoun,Park, Ji Hoon,Jung, Il Gu,Choi, Soo Young,Chung, Young Keun,Lee, Bun Yeoul WILEY-VCH Verlag 2006 Chem Inform Vol.37 No.21
<P>ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.</P>
Lee, Sang Ick,Park, Se Yeoun,Chung, Young Keun WILEY-VCH Verlag 2006 Advanced synthesis & catalysis Vol.348 No.16
<P>A new [Rh(cod)Cl]<SUB>2</SUB>/AgX (cod=1,5-cyclooctadiene)-catalyzed intermolecular [4+2+2] cycloaddition reaction between two enynes with one diene, and between two diynes and one diene has been developed. This is the first example of a rhodium-catalyzed trimolecular and three-component [4+2+2] cycloaddition to form eight-membered ring compounds. The yield of the reaction was highly dependent upon the counteranion and the reaction medium. The best yields were obtained when the reaction was carried out in toluene with OTf<SUP>−</SUP> anions. The regioselectivity was highly dependent upon the substrates. Relatively high regioselectivities were obtained for the cycloaddition of two enynes with one diene. In some cases, only one regioisomer was obtained. However, the regioselectivities for the cycloaddition of two diynes with one diene were rather poor. The use of a syringe pump in the slow addition of reactants slightly enhanced the regioselectivity.</P> <B>Graphic Abstract</B> <P> <img src='wiley_img/16154150-2006-348-16-17-ADSC200600321-content.gif' alt='wiley_img/16154150-2006-348-16-17-ADSC200600321-content'> </P>
Lee, Jeong-Ha,Eom, Sung-Hwan,Lee, Eun-Hye,Jung, Yeoun-Joong,Kim, Hyo-Jung,Jo, Mi-Ra,Son, Kwang-Tae,Lee, Hee-Jung,Kim, Ji Hoe,Lee, Myung-Suk,Kim, Young-Mog The Korean Society of Phycology 2014 ALGAE Vol.29 No.1
To develop effective and safe acne vulgaris therapies with a continuing demand for new solutions, we investigated unique efficacy of an antibacterial agent from marine brown alga Eisenia bicyclis in treating acne vulgaris. The methanolic extract of E. bicyclis exhibited potential antibacterial activity against acne-related bacteria. The ethyl acetate fraction showed the strongest antibacterial activity against the bacteria among solvent fractions. Six compounds (1-6), previously isolated from the ethyl acetate fraction of E. bicyclis, were evaluated for antibacterial activity against acne-related bacteria. Among them, compound 2 (fucofuroeckol-A [FF]) exhibited the highest antibacterial activity against acne-related bacteria with a minimum inhibitory concentration (MIC) ranging from 32 to $128{\mu}g\;mL^{-1}$. Furthermore, FF clearly reversed the high-level erythromycin and lincomycin resistance of Propionibacterium acnes. The MIC values of erythromycin against P. acnes were dramatically reduced from 2,048 to $1.0{\mu}g\;mL^{-1}$ in combination with MIC of FF ($64{\mu}g\;mL^{-1}$). The fractional inhibitory concentration indices of erythromycin and lincomycin were measured from 0.500 to 0.751 in combination with 32 or $64{\mu}g\;mL^{-1}$ of FF against all tested P. acnes strains, suggesting that FF-erythromycin and FF-lincomycin combinations exert a weak synergistic effect against P. acnes. The results of this study suggest that the compounds derived from E. bicyclis can be a potential source of natural antibacterial agents and a pharmaceutical component against acnerelated bacteria.
Modification of surgical procedure for “probable” limited dorsal myeloschisis
Lee, Ji Yeoun,Chong, Sangjoon,Choi, Young Hun,Phi, Ji Hoon,Cheon, Jung-Eun,Kim, Seung-Ki,Park, Sung Hye,Kim, In-One,Wang, Kyu-Chang American Association of Neurological Surgeons 2017 Journal of Neurosurgery: Pediatrics Vol.19 No.5
<B>OBJECTIVE</B><P>Since the entity limited dorsal myeloschisis (LDM) was proposed, numerous confusing clinical cases have been renamed according to the embryopathogenesis. However, clinical application of this label appears to require some clarification with regard to pathology. There have been cases in which all criteria for the diagnosis of LDM were met except for the presence of a neural component in the stalk, an entity the authors call “probable” LDM. The present study was performed to meticulously review these cases and suggest that a modified surgical strategy using limited laminectomy is sufficient to achieve the surgical goal of untethering.</P><B>METHODS</B><P>The authors retrospectively reviewed the imaging findings, operative notes, and pathology reports of spinal dysraphism patients with subcutaneous stalk lesions who had presented to their institution between 2010 and 2014.</P><B>RESULTS</B><P>Among 33 patients with LDM, 13 had the typical nonsaccular lesions with simple subcutaneous stalks connecting the skin opening to the spinal cord. Four cases had “true” LDM meeting all criteria for diagnosis, including pathological confirmation of CNS tissue by immunohistochemical staining with glial fibrillary acidic protein. There were also 9 cases in which all clinical, imaging, and surgical findings were compatible with LDM, but the “neural” component in the resected stalk was not confirmed. For all the cases, limited exposure of the stalk was done and satisfactory untethering was achieved.</P><B>CONCLUSIONS</B><P>One can speculate based on the initial error of embryogenesis that if the entire stalk were traced to the point of insertion on the cord, the neural component would be proven. However, this would require an extended level of laminectomy/laminotomy, which may be unnecessary, at least with regard to the completeness of untethering. Therefore, the authors propose that for some selected cases of LDM, a minimal extent of laminectomy may suffice for untethering, although it may be insufficient for diagnosing a true LDM.</P>
Aberrant Promoter Hypomethylation of Sortilin 1: A Moyamoya Disease Biomarker
Sung, Hye Youn,Lee, Ji Yeoun,Park, Ae Kyung,Moon, Youn Joo,Jo, Inho,Park, Eun-Mi,Wang, Kyu-Chang,Phi, Ji Hoon,Ahn, Jung-Hyuck,Kim, Seung-Ki Korean Stroke Society 2018 Journal of stroke Vol.20 No.3
<P><B>Background and Purpose</B></P><P>The pathogenesis of moyamoya disease (MMD) remains poorly understood, and no reliable molecular biomarkers for MMD have been identified to date. The present study aimed to identify epigenetic biomarkers for use in the diagnosis of MMD. </P><P><B>Methods</B></P><P>We performed integrated analyses of gene expression profiles and DNA methylation profiles in endothelial colony forming cells (ECFCs) from three patients with MMD and two healthy individuals. Candidate gene mRNA expression and DNA methylation status were further validated using reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and pyrosequencing analysis of an expanded ECFC sample set from nine patients with MMD and ten controls. We evaluated the diagnostic accuracy of the potential biomarkers identified here using receiver operating characteristic curve analyses and further measured major angiogenic factor expression levels using a tube formation assay and RT-qPCR. </P><P><B>Results</B></P><P>Five candidate genes were selected via integrated analysis; all five were upregulated by hypomethylation of specific promoter CpG sites. After further validation in an expanded sample set, we identified a candidate biomarker gene, sortilin 1 (<I>SORT1</I>). DNA methylation status at a specific <I>SORT1</I> promoter CpG site in ECFCs readily distinguished patients with MMD from the normal controls with high accuracy (area under the curve 0.98, sensitivity 83.33%, specificity 100%). Furthermore, <I>SORT1</I> overexpression suppressed endothelial cell tube formation and modulated major angiogenic factor and matrix metalloproteinase-9 expression, implying <I>SORT1</I> involvement in MMD pathogenesis. </P><P><B>Conclusions</B></P><P>Our findings suggest that DNA methylation status at the <I>SORT1</I> promoter CpG site may be a potential biomarker for MMD.</P>
Clinical Features and Extraintestinal Manifestations of Crohn Disease in Children
Lee, Young Ah,Chun, Peter,Hwang, Eun Ha,Mun, Sang Wook,Lee, Yeoun Joo,Park, Jae Hong The Korean Society of Pediatric Gastroenterology 2016 Pediatric gastroenterology, hepatology & nutrition Vol.19 No.4
Purpose: The aim of this study was to investigate the clinical features and extraintestinal manifestations (EIMs) of Crohn disease (CD) in Korean pediatric patients. Methods: The medical records of 73 children diagnosed with CD were retrospectively reviewed. Data regarding baseline demographic and clinical characteristics, including CD phenotype at diagnosis based on the Montreal classification, and clinical features and course of EIMs were investigated. Results: Fifty-two (71.2%) of the patients were males. The mean age of the patients was 12.5 years. The mean follow-up period was 3.4 years. The disease location was ileal in 3 (4.1%) of the patients, colonic in 13 (17.8%), ileocolonic in 56 (76.7%). The clinical behavior was inflammatory in 62 (84.9%) of the patients, stricturing in 8 (11.0%), and penetrating in 3 (4.1%). Perianal abscesses or fistulas were found in 37 (50.7%) of the patients. EIMs observed during the study period were anal skin tag in 25 patients (34.2%), hypertransaminasemia in 20 (27.4%), peripheral arthritis in 2 (2.7%), erythema nodosum in 2 (2.7%), vulvitis in 1 (1.4%), uveitis in 1 (1.4%), and pulmonary thromboembolism in 1 (1.4%). Conclusion: Perianal diseases and manifestations were present in more than half of Korean pediatric CD patients at diagnosis. Inspection of the anus should be mandatory in Korean children with suspicious CD, as perianal fistulas, abscesses, and anal skin tags may be the first clue to the diagnosis of CD.