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Mi Young Noh,Yong Hun Jo,Eun Seok Lee,Cheol Hong Park,Namjung Kim,Yong Seok Lee,Seongon Kim,Jong Dae Park,Iksoo Kim,Yeon Soo Han 한국응용곤충학회 2009 한국응용곤충학회 학술대회논문집 Vol.2009 No.10
Janus kinase-signal transducer and activator of transcription (JAK-STAT) signaling pathway is known to play a pivotal role in various cellular events and antiviral responses in both vertebrates and insects. In an attempt to elucidate the potential involvement of STAT on S. exigua-SeNPV interactions, the full length cDNA of SeSTAT was cloned from S. exigua. Analysis of temporal expression patterns shows that SeSTAT is expressed in all stages of life cycle such as larvae, pupae, and adult. Spatial expression analysis shows that it is highly expressed in fat body and Malpighian tubule. Interestingly, SeSTAT is induced at 24 h in response to either laminarin or LTA injection in larvae. Electrophoretic mobility shift assay (EMSA) shows that the binding of nuclear extracts from fat body cells immune-challenged with LTA to STAT5 probe was observed. In addition, SeSTAT was nuclear-translocalized in both fat body and gut cells that were challenged with LTA and laminarin, respectively. Finally, gene silencing of SeSTAT shows that SeNPV number appears to be increased. It suggests that SeSTAT may act as a negative regulator against SeNPV in midgut.
Factors Associated with Attending the National Cancer Screening Program for Liver Cancer in Korea
Noh, Dai-Keun,Choi, Kui-Son,Jun, Jae-Kwan,Lee, Hoo-Yeon,Park, Eun-Cheol Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.2
Background and Aims: The National Cancer Screening Program (NCSP) for liver cancer was initiated in 2003 in Korea. The objective of this study was to evaluate the participation rate of the program and to provide preliminary information on its results based on data collected by the NCSP in 2009. Methods: The target population of the NCSP for liver cancer in 2009 was comprised of 373,590 adults aged ${\geq}40$ years at high risk for liver cancer. Participation rates and positivity rates were assessed in this population. Multivariate logistic regression analysis was performed to determine the factors associated with participation in the NCSP for liver cancer. Results: The overall participation rate was 37.9% and 1,126 participants were positive at screening. The highest participation rates were observed in women, those in their 60s, National Health Insurance beneficiaries, and individuals positive for hepatitis B surface antigen. Positivity rates for men, those in their 70s, Medical Aid Program recipients and individuals with liver cirrhosis were the highest in the respective categories of gender, age, health insurance type, and risk factor for liver cancer. Conclusions: The participation rates of the NCSP for liver cancer are still low, despite the fact that the program targets a high-risk group much smaller than the general population. Efforts to facilitate participation and to reduce disparities in liver cancer screening among Korean men and women are needed. These results provide essential data for evidence-based strategies for liver cancer control in Korea.
Yu, Eun Jeong,Lee, Young,Rha, Sun Young,Kim, Tae Soo,Chung, Hyun Cheol,Oh, Bong Kyeong,Yang, Woo Ick,Noh, Sung Hoon,Jeung, Hei-Cheul American Association for Cancer Research 2008 Molecular Cancer Research Vol.6 No.10
<P>We investigated the biological role of thymidine phosphorylase (TP), an angiogenic factor, in gastric cancer cell migration and invasion and explored a therapeutic approach for high TP-expressing tumors using TP enzymatic inhibitor (TPI) and rapamycin. We established TP cDNA overexpressing gastric cancer cell lines (MKN-45/TP and YCC-3/TP) and did invasion and adhesion assays with Matrigel-coated transwell membranes. The related signal pathway using recombinant human TP (rhTP), deoxy-d-ribose (D-dRib), and signal pathway inhibitors (wortmannin, LY294002, and rapamycin) was investigated. First, AGS and MKN-1 gastric cancer cell lines showed dose-dependent up-regulation of invasiveness through Matrigel following treatment with rhTP or D-dRib. TP-overexpressing cancer cell lines displayed increased migration and invasion activity, which doubled with rhTP and D-dRib treatment. This activity depended on the enzymatic activity of TP, and TP stimulated the adhesion of cancer cells onto Matrigel and induced actin filament remodeling. Finally, we showed that this activity is related to increased phosphatidylinositol 3-kinase activity in TP-overexpressing cells and that combination treatment with rapamycin and TP enzymatic inhibitor produces an additive effect to abrogate TP-induced invasion. Taken together, TP increases the migration and invasion of gastric cancer cells, especially in TP-expressing cells. Therapies targeting TP might diminish the propensity for invasion and metastasis in gastric cancer.</P>
박은경 ( Eun Kyung Park ),윤영섭 ( Yeong Seop Yun ),권순효 ( Soon Hyo Kwon ),전진석 ( Jin Seok Jeon ),노현진 ( Hyun Jin Noh ),이선영 ( Sun Young Lee ),진소영 ( So Young Jin ),한동철 ( Dong Cheol Han ) 대한신장학회 2008 Kidney Research and Clinical Practice Vol.27 No.1
서론: 최근 비만과 대사증후군을 만성콩팥병의 발병과 진행의 위험인자들로 인식하고 있다. 비만환자에서 사구체비대와 국소분절 사구체경화증이 발견되어, 비만관련 사구체병증의 구조와 기능관계에 대한 연구의 필요성이 대두되고 있다. 국내에서는 아직 국내보고가 없었던 이 질병의 병리학적 특성을 분석하고, 다른 임상인자들과의 관련성을 분석하였다. 방법: 비만은 BMI 25 kg/m2 이상으로 정의하였다. 비만관련 사구체병증은 비만환자에서 국소분절 사구체경화증과 사구체비대 혹은 사구체비대만 관찰되는 경우로 정의하였다. 비만관련 사구체병증으로 진단된 14예를 대상 환자들과 연령을 맞춘 얇은 기저막병 환자를 대조군으로 하여 임상자료 및 병리학적 소견과 사구체 크기를 비교분석하였다. 사구체 크기는 각 환자에서 가장 큰 사구체 5개의 장축을 측정하여 평균을 내었다. 또한 각 임상인자들과 사구체 크기와의 관련성을 분석하였다. 결과: 모든 비만 환자에서 신증후군이나 함요부종은 관찰되지 않았다. 사구체의 크기는 비만군에서 240±21 μm, 대조군에서는 193±23 μm로 비만군에서 사구체 크기가 의미있게 증가되어 있었다 (p=0.001). 대상환자 모두에서 사구체비대가 관찰되었고 이 중 절반에서 국소분절 사구체경화증이 동반되었다. 과반수 이상의 비만 환자에서 경도의 세관 위축과 간질성 섬유화, 세동맥경화를 보였다. 비만 환자 중 사구체 비대만 보인 군과 비교하여 국소분절 사구체경화증을 보인 군에서 수축기 고혈압과 세관 간질성 섬유화증이 심했다. 수축기 혈압과 허리둘레가 사구체의 크기에 영향을 미치는 독립적인 위험인자로 나타났다. 결론: 경한 비만에도 불구하고 대부분에서 사구체비대 혹은 국소분절 사구체경화증이 관찰되었으나 임상양상은 경미하였다. 이는 비만환자에서 사구체질환에 대한 임상적인 주의가 필요하다는 것을 지적하고 있다. Purpose: Recently, obesity with metabolic syndrome is considered as an important risk factor in the development and progression of chronic kidney disease (CKD). Glomerulomegaly and focal segmental glomerulosclerosis (FSGS) are found in the obese patients, suggesting that investigation of structuralfunctional relationship in the obesity-related glomerulopathy (ORG) is needed to prevent CKD. Thus, we report here clinical and pathologic characteristics of ORG and its association with other clinical variables. Methods: Obesity was defined by body mass index >25 kg/m2 and ORG morphologically by FSGS and glomerulomegaly or glomerulomegaly alone. Clinicopathologic findings and glomerular sizes of ORG (14 cases) were compared with age-matched controls with thin basement membrane disease. Multiple variable analysis was performed between glomerular size and clinical variables. Results: There was no nephrotic syndrome or pretibial pitting edema in all obese patients. Mean glomerular diameter was increased in obese patients compared to controls (240±21 μm vs 197±21 μm, p=0.001). Seven cases had lesions with FSGS with glomerulomegaly and seven cases glomerulomegaly alone. Mild tubular atrophy, interstitial fibrosis and arteriolosclerosis were observed in more than half of patients. In obese patients, seven patients with FSGS had more elevated systolic blood pressure and tubular interstitial fibrosis compared to patients with glomerulomegaly only. Patients` systolic blood pressure and waist circumference were independent risk factors influencing the glomerular size in obese patients. Conclusion: FSGS or glomerulomegaly are prominent even in the mild obesity with insignificant clinical symptoms. This indicates that the clinical attention to glomerular disease is needed in obese patients.