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대장에 발생한 샘암종에서 MUC1과 MUC2 점소 발현의 의의
이윤경,이주호,이용,심재영,박정훈,오수섭,박진실,기근홍 朝鮮大學校 附設 醫學硏究所 2004 The Medical Journal of Chosun University Vol.29 No.2
Background : Mucins possess the unique function of protecting and lubricating the epithelial surface and other important functions such as call growth, direct implication in the fetal development, the epithelial renewal and differentiation, the epithelial integrity, carcinogenesis, immune regulation, cellular adhesion and metastasis. Purpose : This study was done to provide the significance of alteration of MUC1 and MUC2 expression in colorectal adenocarcinoma, A series of 131 colorectal adenocarcinomas including 11 mucinous carcinomas were screened immunohistochemically for their expression of MUCI and MUC2, Materials and mehtods : Of 131 carcinomas, 76 (58,5%) were MUCI positive and 91 (68, 9%) were MUC2 positive, In normal colonic goblet cells, MUCl was not expressed but MUC2 was expressed in cytoplasm, Conclusion There were up-regulation of MUCI and down-regulation of MUC2 in colorectal carcinomas, The frequency of MUC2 positivity according to differentiation was statistically reliable. (p=0.0001)
Park, Heung Keun,Rhie, Kyuyol,Yeom, Jung Sook,Park, Ji Sook,Park, Eun Sil,Seo, Ji-Hyun,Lim, Jae Young,Park, Chan-Hoo,Woo, Hyang-Ok,Youn, Hee-Shang,Kang, Ki Ryeon,Park, Jung Je The Korean Society of Pediatric Gastroenterology 2015 Pediatric gastroenterology, hepatology & nutrition Vol.18 No.2
Purpose: To investigate the differences in clinical features and laboratory findings between group D and non-group D non-typhoidal Salmonella (NTS) gastroenteritis in children. Methods: A retrospective chart review of children diagnosed with NTS confirmed by culture study was performed. The clinical features and laboratory findings of group D and non-group D NTS were compared. Results: From 2003 to 2012, 75 cases were diagnosed as NTS at our center. The number of group D and non-group D patients was 45 and 30, respectively. The mean age was higher in group D than in non-group D patients (5.1 years vs. 3.4 years, p=0.038). Headaches were more frequently observed (p=0.046) and hematochezia was less frequently observed (p=0.017) in group D than in non-group D NTS gastroenteritis patients. A positive Widal test result was observed in 53.3% of group D and 6.7% of non-group D NTS cases (O-titer, p=0.030; H-titer, p=0.039). There were no differences in white blood cell counts, level of C-reactive protein and rate of antimicrobial resistance between group D and non-group D cases. Conclusion: The more severe clinical features such as headache, fever, and higher Widal titers were found to be indicative of group D NTS gastroenteritis. Additionally, group D NTS gastroenteritis was more commonly found in older patients. Therefore, old age, fever, headache, and a positive Widal test are more indicative of group D NTS than non-group D NTS gastroenteritis. Pathophysiological mechanisms may differ across serologic groups.
A Simple Method for the Detection and Identification of Korean Brown Cattle(Hanwoo) using DHPLC
Kang. Won,Park. Sane-Bum,Nam. Youn-Hyoung,An. Young-Chang,Lee. Sang-Hyun,Park. Jin-Keun,Lee. Jae-Sik,Jang. On-Cheoul,Park. Su-Min,Park. Yong-Hyun,Ko. Kyung-Hee,Moon. Sung-Sil 한국축산식품학회 2006 심포지움 및 학술발표회 Vol.- No.37
Denaturing high-performance liquid chromatography(DHPLC) is used in a wide variety of genetic applications and is an efficient method for detection of mutations involving one or a few nucleotides. We developed a high-throughput DHPLC method for identifying polymorphisms in the MC1R gene that are characteristic of Hanwoo cattle. We compared 10 tissue samples from Hanwoo cattle, 10 samples from Holstein cattle and 10 samples from Hanwoox Holstein crossbred cattle to determine whether DHPLC analysis can be used to distinguish between these genotypes. Samples obtained from Hanwoo cattle had a unique profile of peaks that could be used as a molecular fingerprint for this breed. We also analyzed two hundred samples in a trial in which we were blinded to the genotype of the samples and correctly identified the breed-of-origin of 594 out of 600 sequence variations(99%).
Factors associated with mumps meningitis and the possible impact of vaccination
Rhie, Kyuyol,Park, Heung-Keun,Kim, Young-Soo,Yeom, Jung Sook,Park, Ji Sook,Seo, Ji-Hyun,Park, Eun Sil,Lim, Jae-Young,Park, Chan-Hoo,Woo, Hyang-Ok,Youn, Hee-Shang The Korean Pediatric Society 2016 Clinical and Experimental Pediatrics (CEP) Vol.59 No.1
Purpose: Mumps meningitis is a common complication of mumps infection; however, information on mumps meningitis in the postvaccine era is limited. The purpose of the present study was to determine factors associated with mumps meningitis and to discuss the effect of vaccination on this disease. Methods: We retrospectively reviewed patients younger than 19 years with mumps, diagnosed at a university hospital in Korea between 2003 and 2013. Patients were divided into groups with and without meningitis, and the clinical features of the 2 groups were compared. Results: The study enrolled 119 patients: 19 patients with meningitis and 100 patients without. Univariate analysis showed that older age (median: 15 years vs. 9.5 years, respectively), a longer interval from last vaccination (median: 10.2 years vs. 4.8 years, respectively), and febrile presentation (94.7% vs. 31.0%, respectively) were significantly associated with mumps meningitis. Sex, number of vaccination doses, bilateral parotitis, and the presence of complications other than meningitis did not differ between the 2 groups. In multivariate logistic regression analysis, age (odds ratio, 1.38; 95% confidence interval, 1.01-1.89; P=0.04) and fever (odds ratio, 30.46; 95% confidence interval, 3.27-283.61; P<0.01) remained independent factors for mumps meningitis. Conclusion: Clinicians in the postvaccine era should be aware of the possibility of mumps meningitis in febrile cases of mumps in adolescents, regardless of the number of vaccination doses. To establish the role of vaccination in mumps meningitis, further studies will be necessary.
SIK2 Is Critical in the Regulation of Lipid Homeostasis and Adipogenesis In Vivo
Park, Jinyoung,Yoon, Young-Sil,Han, Hye-Sook,Kim, Yong-Hoon,Ogawa, Yoshihiro,Park, Keun-Gyu,Lee, Chul-Ho,Kim, Seong-Tae,Koo, Seung-Hoi American Diabetes Association 2014 Diabetes Vol.63 No.11
<P>Cyclic AMP promotes chronic expression of target genes mainly by protein kinase A–dependent activation of CREB transcription factor machineries in the metabolic tissues. Here, we wanted to elaborate whether CREB-regulated transcription factor (CRTC)2 and its negative regulator salt-inducible kinase (SIK)2 are involved in the transcriptional control of the metabolic pathway in adipocytes. SIK2 knockout (SIK2 KO) mice exhibited higher blood glucose levels that were associated with impaired glucose and insulin tolerance. Hypertriglyceridemia was apparent in SIK2 KO mice, mainly due to the increased lipolysis from white adipocytes and the decreased fatty acid uptake in the peripheral tissues. Investigation of white adipocytes revealed the increases in fat cell size and macrophage infiltration, which could be linked to the metabolic anomaly that is associated in these mice. Interestingly, SIK2 KO promoted the enhancement in the CRTC2-CREB transcriptional pathway in white adipocytes. SIK2 KO mice displayed increased expression of activating transcription factor (ATF)3 and subsequent downregulation of GLUT4 expression and reduction in high–molecular weight adiponectin levels in the plasma, leading to the reduced glucose uptake in the muscle and white adipocytes. The effect of SIK2-dependent regulation of adipocyte metabolism was further confirmed by in vitro cell cultures of 3T3 L1 adipocytes and the differentiated preadipocytes from the SIK2 or CRTC2 KO mice. Collectively, these data suggest that SIK2 is critical in regulating whole-body glucose metabolism primarily by controlling the CRTC2-CREB function of the white adipocytes.</P>
Inhibitoin of Human Malignant Glioma Growth In Vivo by Human Recombinant Plasminogen Kringles 1-3
Park,Chun Kun,Joe,Kyung Keun,Kim,Moon Chan,Joe,Young A,Son,Byung Chul,Jeun,Shin Soo,Yang,Youn Joo,Kang,Joon Ki,Hong,Yong Kil,Lee,Kwan Sung,Lee,Youn Soo,Lee,Hyo Sil,Chung,Soo Ii,Chung,Dong Sup 가톨릭중앙의료원 가톨릭암센터 1999 암심포지움 Vol.- No.2
Human malignant gliomas are highly vascularized and aggressive tumors. Angiogenesis inhibitors have shown to induce regression of a variety of primary and metastatic tumors in vivo. However, their usefulness in treating brain tumors is not wellunderstood. Angiostatin, a multiple kringle (1-4 out of 5) containing fragment of plasminogen, is one of the highly effective natural cryptic angiogenesis inhibitors. In this study, the theraperutic efficacy of a non-glycosylated and small molecular size recombinant kringles 1-3(rPK1-3) was examined in the treatment of brain tumors generated by stereotactic intracerebral implantation of U-87 human glioma cells in nude mice. Mice bearing tumors, post-7 day implant, were treated with rPK1-3(100 mg/kg/day) s.c. for 21 days. The treated animals showed suppressed brain tumor growth by greater than 71.2% along with a 3-fold increase of apoptotic index and suppressed vascularization by 78.9%, without any observable signs of toxicity. Analysis of bFGF and VEGF expression in the tumors of the treated animals using immunohistochemical methods showed near complete absence of growth factors. Our results indicate that a non-glycosylated, small molecular size rPK1-3 is an efficient tumoristatic agent for the treatment of intracranial human glioma wenograft in mice and might provide ew strategies for the treatment of brain tumors.
돼지 신장세포(PK15)의 이종이식 거부반응에 대한 재조합 IL-18의 영향
최연실,김은미,김영관,박상연,심정현,윤도영,강형식,명평근 충남대학교 형질전환복제돼지연구센터 2004 논문집 Vol. No.8
Various cytokines including IL-1β, IL-2, IL-4, IL-10, IL-12p40, IFN-r, and TNF-α have been recently reported to play important roles in both host and donor cell activations during xenotransplantation. Interleukin (IL)-18, a proinflammatory cytokine, can induce IL-4 and IL-13 production in T cells, NK cells, B cells, mast cells, and basophils. IL-18 has the capacity to stimulate innate immunity and both Th1-and Th2- mediated responses, but little is known to involve in the xenograft rejection. In order to investigate the role of IL-18 in xenograft rejection, we transplanted the pig kidney (PK15) cells to C57BL/6 mouse with or without intraperitoneal injection of mouse recombinatant IL-18, It was analyzed the population of T cell, B cell and NK cell in the mice transplanted with PK 15 cells and recombinant IL-18 by flow cytometry. We found that splenic CD3+ T cells were increased in mice injected PKl5 cells with recombinant IL-18. These results suggest that recombinant IL-18 is critical in the xenograft rejection by increasing T cell population of the recipients.
돼지 신장세포(PK15)의 이종이식 거부반응에 대한 재조합 IL-18의 영향
최연실,김은미,김영관,박상연,심정현,윤도영,강형식,명평근 충남대학교 생물공학연구소 2004 생물공학연구지 Vol.10 No.1
Various cytokines including IL-1β, IL-2, IL-4, IL-10, IL-12p40, IFN-γ, and TNF-α have been recently reported to play important roles in both host and donor cell activations during xenotransplantation. Interleukin (IL)-18, a proinflammatory cytokine, can induce IL-4 and IL-13 production in T cells, NK cells, B cells, mast cells, and basophils. IL-18 has the capacity to stimulate innate immunity and both Th1-and Th2- mediated responses, but little is known to involve in the xenograft rejection. In order to investigate the role of IL-18 in xenograft rejection, we transplanted the pig kidney (PK15) cells to C57BL/6 mouse with or without intraperitoneal injection of mouse recombinatant IL-18. It was analyzed the population of T cell, B cell and NK cell in the mice transplanted with PK 15 cells and recombinant IL-18 by flow cytometry. We found that splenic CD3+ T cells were increased in mice injected PK15 cells with recombinant IL-18. These results suggest that recombinant IL-18 is critical in the xenograft rejection by increasing T cell population of the recipients.