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( Lian Xu ),( Mengxia Fu ),( Dongrui Chen ),( Weiqing Han ),( Michael C. Ostrowski ),( Paul Grossfeld ),( Pingjin Gao ),( Maoqing Ye ) 생화학분자생물학회 2019 BMB Reports Vol.52 No.10
Cardiac fibrosis is a common feature in chronic hypertension patients with advanced heart failure, and endothelial-tomesenchymal transition (EndMT) is known to promote Angiotensin II (Ang II)-mediated cardiac fibrosis. Previous studies have suggested a potential role for the transcription factor, ETS-1, in Ang II-mediated cardiac remodeling, however the mechanism are not well defined. In this study, we found that mice with endothelial Ets-1 deletion showed reduced cardiac fibrosis and hypertrophy following Ang II infusion. The reduced cardiac fibrosis was accompanied by decreased expression of fibrotic matrix genes, reduced EndMT with decreased Snail, Slug, Twist, and ZEB1 expression, as well as reduced cardiac hypertrophy and expression of hypertrophy-associated genes was observed. In vitro studies using cultured H5V cells further confirmed that ETS-1 knockdown inhibited TGF- β1-induced EndMT. This study revealed that deletion of endothelial Ets-1 attenuated Ang II-induced cardiac fibrosis via inhibition of EndMT, indicating an important ETS-1 function in mediating EndMT. Inhibition of ETS-1 could be a potential therapeutic strategy for treatment of heart failure secondary to chronic hypertension. [BMB Reports 2019; 52(10): 595-600]
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Phase II study of sunitinib as second-line treatment for advanced gastric cancer
Bang, Yung-Jue,Kang, Yoon-Koo,Kang, Won K.,Boku, Narikazu,Chung, Hyun C.,Chen, Jen-Shi,Doi, Toshihiko,Sun, Yan,Shen, Lin,Qin, Shukui,Ng, Wai-Tong,Tursi, Jennifer M.,Lechuga, Maria J.,Lu, Dongrui Ray,R Springer US 2011 Investigational new drugs Vol.29 No.6
<P><B>Summary</B></P><P><I>Purpose.</I> This phase II, open-label, multicenter study assessed the oral, multitargeted, tyrosine kinase inhibitor sunitinib in patients with advanced gastric or gastroesophageal junction adenocarcinoma who had received prior chemotherapy. <I>Experimental design</I>. Patients received sunitinib 50 mg/day on Schedule 4/2 (4 weeks on treatment, followed by 2 weeks off treatment). The primary endpoint was objective response rate; secondary endpoints included clinical benefit rate, duration of response, progression-free survival (PFS), overall survival (OS), pharmacokinetics, pharmacodynamics, safety and tolerability, and quality of life. <I>Results</I>. Of 78 patients enrolled, most had gastric adenocarcinoma (93.6%) and metastatic disease (93.6%). All were evaluable for safety and efficacy. Two patients (2.6%) had partial responses and 25 patients (32.1%) had a best response of stable disease for ≥6 weeks. Median PFS was 2.3 months (95% confidence interval [CI], 1.6–2.6 months) and median OS was 6.8 months (95% CI, 4.4–9.6 months). Grade ≥3 thrombocytopenia and neutropenia were reported in 34.6% and 29.4% of patients, respectively, and the most common non-hematologic adverse events were fatigue, anorexia, nausea, diarrhea, and stomatitis. Pharmacokinetics of sunitinib and its active metabolite were consistent with previous reports. There were no marked associations between baseline soluble protein levels, or changes from baseline, and measures of clinical outcome. <I>Conclusions</I>. The progression-delaying effect and manageable toxicity observed with sunitinib in this study suggest that although single-agent sunitinib has insufficient clinical value as second-line treatment for advanced gastric cancer, its role in combination with chemotherapy merits further study.</P>
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