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멜로디 시퀀스를 이용하는 내용 기반 음악 검색 알고리즘
위조민(Zu-Min Wei),구경이(Kyong-I Ku),김유성(Yoo-Sung Kim) 한국정보과학회 2001 한국정보과학회 학술발표논문집 Vol.28 No.2Ⅰ
With the growth in computer and network technologies, some content-based music retrieval systems have been developed. However, their retrieval efficiency does not satisfy user's requirement yet. Of course users hope to have a more efficient and higher precision for music retrieval. In this paper, so for these reasons, we propose an efficient content-based music retrieval algorithm using melodies represented as music sequences. From the experimental result, it is shown that the proposed algorithm has higher exact rate than the related algorithms.
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Overexpression of Cyclooxygenase-1 Correlates with Poor Prognosis in Renal Cell Carcinoma
Yu, Zu-Hu,Zhang, Qiang,Wang, Ya-Dong,Chen, Jing,Jiang, Zhi-Mao,Shi, Min,Guo, Xin,Qin, Jie,Cui, Guang-Hui,Cai, Zhi-Ming,Gui, Yao-Ting,Lai, Yong-Qing Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.6
The aim of this study was to evaluate expression of COX-1 in renal cell carcinoma (RCC) and its prognostic value. mRNA of COX-1 was detected in 42 paired RCC and adjacent normal tissues with quantitative realtime polymerase chain reaction (qRT-PCR). Expression of COX-1 was also evaluated in 196 RCC sections and 91 adjacent normal tissues with immunohistochemistry. Statistical analysis was performed to assess COX-1 expression in RCC and its prognostic significance. The results of qRT-PCR showed mRNA levels of COX-1 in RCC tissues to be significantly higher than that in adjacent normal tissues (p < 0.001). Immunohistochemical assays also revealed COX-1 to be overexpressed in RCC tissues (p < 0.001). Statistical analysis demonstrated high expression of COX-1 was correlated with tumour size (p = 0.002), pathological stage (p = 0.003), TNM stage (p = 0.003, 0.007, 0.027, respectively), and tumour recurrence (p < 0.001). Survival analysis indicated patients with high expression of COX-1 had shorter survival time (p < 0.001), and COX-1 was an independent predictor. This is the first study to reveal overexpression of COX-1 in RRC and point to use as a prognostic marker in affected patients.
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Yung Zu Park,Inseong Hwang,Sung-Ha Kim,Sook Min Hwang,Tae-Jung Sung,Hye Jin Lee 대한신생아학회 2020 Neonatal medicine Vol.27 No.1
Central diabetes insipidus (CDI) is extremely rare in neonates, especially in extremelylow- birth-weight infants, and most cases are secondary to conditions, such as ischemic or hemorrhagic brain damage. Here, we report a case of CDI in a 530-g infant born at 23+3 weeks of gestation, with suspected ectopic posterior pituitary gland. Hypernatremia was noticed at 33+6 weeks of postmenstrual age, and it persisted with increased volumes of diluted urine, despite adequate sodium intake. Serum and urine osmolality returned to the normal range after administration of a desmopressin injection. The bright spot of the posterior pituitary was absent, and brain magnetic resonance imaging suggested an ectopic posterior pituitary gland. At the time of writing this manuscript, the patient was on oral desmopressin medication without complications at the corrected age of 8 months. Through this report, we emphasize that although CDI is extremely rare in premature infants, it should be suspected when hypernatremia and polyuria that are unexplained by other causes are noted.
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(Jeong Min Seo),(Kyung Ae Park),(Eui Zu Yeo),(Hay Mie Choi) 생화학분자생물학회 1999 BMB Reports Vol.32 No.3
This study was designed to examine the anticarcinogenic effect of dietary supplementation with garlic powder on rat hepatocarcinogenesis. All rats were initiated by a single dose (200 ㎎/body weight) intraperitoneal injection of diethylnitrosamine (DEN), and three weeks later, subjected to two-thirds partial hepatectomy. Two weeks after initiation, four groups of rats were given experimental diets supplemented with 0 (control group), 0.5, 2.0, or 5.0% garlic powder for 6 weeks. Rats were sacrificed at eight weeks after initiation. The induction of placental glutathione Stransferase (GST-P) positive foci was significantly inhibited almost equally in all three groups fed garlic diets. Glucose 6-phosphatase (G6Pase) activity was increased in rats fed 0.5% and 2.0% garlic powder, and was negatively correlated with the number and area of GST-P positive foci. Thiobarbituric acid reactive substance (TBARS) contents were decreased in rats fed 2.0% and 5.0% garlic powder. Only 5.0% garlic powder supplementation significantly increased the glutathione content and the glutathione S-transferase activity, compared to the control group. Therefore, all levels of garlic powder, 0.5% to 5.0%, exerted an antipromotional effect during hepatocarcinogenesis. Dietary supplementation with garlic powder seemed to maintain microsomal membrane integrity by increasing G6Pase activities. Glutathione-dependent detoxifying enzymes did not seem to contribute to this protective effect directly. The present study suggests that garlic powder is effective in inhibiting the induction of GSTP positive foci, possibly by stabilizing the hepatic microsomal membrane. This study was designed to examine the anticarcinogenic effect of dietary supplementation with garlic powder on rat hepatocarcinogenesis. All rats were initiated by a single dose (200 ㎎/body weight) intraperitoneal injection of diethylnitrosamine (DEN), and three weeks later, subjected to two-thirds partial hepatectomy. Two weeks after initiation, four groups of rats were given experimental diets supplemented with 0 (control group), 0.5, 2.0, or 5.0% garlic powder for 6 weeks. Rats were sacrificed at eight weeks after initiation. The induction of placental glutathione Stransferase (GST-P) positive foci was significantly inhibited almost equally in all three groups fed garlic diets. Glucose 6-phosphatase (G6Pase) activity was increased in rats fed 0.5% and 2.0% garlic powder, and was negatively correlated with the number and area of GST-P positive foci. Thiobarbituric acid reactive substance (TBARS) contents were decreased in rats fed 2.0% and 5.0% garlic powder. Only 5.0% garlic powder supplementation significantly increased the glutathione content and the glutathione S-transferase activity, compared to the control group. Therefore, all levels of garlic powder, 0.5% to 5.0%, exerted an antipromotional effect during hepatocarcinogenesis. Dietary supplementation with garlic powder seemed to maintain microsomal membrane integrity by increasing G6Pase activities. Glutathione-dependent detoxifying enzymes did not seem to contribute to this protective effect directly. The present study suggests that garlic powder is effective in inhibiting the induction of GSTP positive foci, possibly by stabilizing the hepatic microsomal membrane.
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Kim, Jeong-Min,Lee, Mi-Kyoung,Kim, Yong-Zu Korean Chemical Society 2005 Bulletin of the Korean Chemical Society Vol.26 No.2
The nonstructural protein 5B (NS5B) of hepatitis C virus (HCV) is the viral RNA-dependent RNA polymerase (RdRp), which is the essential catalytic enzyme for the viral replication and is an appealing target for the development of new therapeutic agents against HCV infection. A small amount of serum from a single patient with hepatitis C was used to get the genome of a Korean HCV isolate. Sequence analysis of NS5B 1701 nucleotides showed the genotype of a Korean isolate to be subtype 1b. The soluble recombinant HCV NS5B polymerase lacking the C-terminal 24 amino acids was expressed and purified to homogeneity. With the highly purified NS5B protein, we established in vitro systems for RdRp activity to identify potential polymerase inhibitors. The rhodanine family compounds were found to be potent and specific inhibitors of NS5B from high throughput screening (HTS) assay utilizing the scintillation proximity assay (SPA) system. The binding mode of an inhibitor was analyzed by measuring various kinetic parameters. Lineweaver-Burk plots of the inhibitor suggested it binds not to the active site of NS5B polymerase, but to an allosteric site of the enzyme. The activity of NS5B in in vitro polymerase reactions with homopolymeric RNA requires interaction with multiple substrates that include a template/primer and ribonucleotide triphosphate. Steady-state kinetic parameter, such as Km, was determined for the ribonucleotide triphosphate. One of compounds found interacts directly with the viral polymerase and inhibits RNA synthesis in a manner noncompetitively with respect to UTP. Furthermore, we also investigated the ability of the compound to inhibit NS5B-directed viral RNA replication using the Huh7 cell-based HCV replicon system. The investigation is potentially very useful for the utility of such compounds as anti-hepatitic agents.
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Mao, Ying-Min,Luo, Zu-Yan,Li, Bo,Hu, Ting-Yang Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.3
Aim: Tanscatheter arterial embolization irrespective of with or without an anticancer agent and lipiodol has been controversial with regard to survival benefit. Therefore, we conducted a prospective study to analyze the effect of transcatheter arterial lipiodol chemoembolization (TACE) on the survival of HCC. Methods: A prospective study was conducted, and a total of 326 patients with primary liver cancer who were newly diagnosed were collected from January 2004 to January 2005 in Zhejiang Provincial People's Hospital of China. A univariate Cox's regression analysis was used to assess the survival of the HCC cases receiving TACE. Results: The duration of follow-up for the HCC patients treated with TACE ranged from 3 months to 60 months. For the overall patients, survival rate at 5 years was 42%. Both HBV Ag and HCV Ab positive patients showed significantly low survival rate at 5 years. The multivariate analysis revealed The IV TNM stage was related to an heavy increased risk of death of HCC patients, and Child C grade group showed a significant moderate increased risk. Conclusion: Our study showed TACE is associated with a better prognosis of HCC patients, and the HBV infection, TNM stage, Child-Pugh grade and number of TACE may influence the survival probability. Further TACE studies should be assess the quality of life of HCC patients, so as to provide more information for treatment of HCC.
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Seo, Jeong-Min,Park, Kyung-Ae,Yeo, Eui-Zu,Choi, Hay-Mie Korean Society for Biochemistry and Molecular Biol 1999 Journal of biochemistry and molecular biology Vol.32 No.3
This study was designed to examine the anticarcinogenic effect of dietary supplementation with garlic powder on rat hepatocarcinogenesis. All rats were initiated by a single dose (200 mg/body weight) intraperitoneal injection of diethylnitrosamine (DEN), and three weeks later, subjected to two-thirds partial hepatectomy. Two weeks after initiation, four groups of rats were given experimental diets supplemented with 0 (control group), 0.5, 2.0, or 5.0% garlic powder for 6 weeks. Rats were sacrificed at eight weeks after initiation. The induction of placental glutathione S-transferase (GST-P) positive foci was significantly inhibited almost equally in all three groups fed garlic diets. Glucose 6-phosphatase (G6Pase) activity was increased in rats fed 0.5% and 2.0% garlic powder, and was negatively correlated with the number and area of GST-P positive foci. Thiobarbituric acid reactive substance (TBARS) contents were decreased in rats fed 2.0% and 5.0% garlic powder. Only 5.0% garlic powder supplementation significantly increased the glutathione content and the glutathione S-transferase activity, compared to the control group. Therefore, all levels of garlic powder, 0.5% to 5.0%, exerted an anti promotional effect during hepatocarcinogenesis. Dietary supplementation with garlic powder seemed to maintain microsomal membrane integrity by increasing G6Pase activities. Glutathione-dependent detoxifying enzymes did not seem to contribute to this protective effect directly. The present study suggests that garlic powder is effective in inhibiting the induction of GST-P positive foci, possibly by stabilizing the hepatic microsomal membrane.
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