1,720,968 research outputs found
Elucidation of the mechanism of Epithelial-Mesenchymal Transition in peritoneal environment of gastric cancer
Full text link胃癌腹膜転移側の宿主細胞である腹膜中皮細胞(HPMC)において、TGF-β1や胃癌細胞との共培養によるEMT(上皮間葉転換）誘導を証明した。またマウス皮下腫瘍モデルを用い、胃癌細胞とHPMCの共投与は腫瘍増殖能や間質線維化の増生に促進的に作用する事を示した。さらにBRM製剤であるPSKは非免疫学的機序である抗TGFβ作用によって、これらのEMT誘導に伴う癌間質の線維化を抑制する事を証明した。In this study, we evaluated the mechanism of EMT of Human PeritonealMesothelial Cell(HPMC) in in peritoneal environment of gastric cancer. We also investigated the inhibitory effect of PSK on the TGF/Smad signalling pathway and TGFb induced EMT in human HPMCs and gastric cancer cells. In vitro, TGFb increased the expression of E cadherin and decreased the expression of mesenchymal markers in HPMCs and which was suppressed by PSK. PSK suppressed TGFb induced phosphorylation of Smad2 in HPMCs in western blot analysis.In mouse subctaneous xenograft models, PSK inhibited the tumor fibrosis induced by co-inoculation of gastric cancer cells and HPMCs. PSK might have the potential to reduce TGFb induced activation of HPMCs in the peritoneal microenvironment of gastric cancer.研究課題/領域番号:24791402, 研究期間(年度):2012-04-01 – 2014-03-31出典：研究課題「胃癌腹膜播種の微小環境における上皮間葉転換の解明と治療標的の意義」課題番号24791402
（KAKEN：科学研究費助成事業データベース（国立情報学研究所））
（https://kaken.nii.ac.jp/ja/report/KAKENHI-PROJECT-24791402/24791402seika/）を加工して作成金沢大学医薬保健研究域医学系research repor
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Adipose-Derived Cells Enhance Cancer Stem Cell Property and Chemo-resistance in Gastric Cancer
Full text link本研究では、胃癌細胞と脂肪由来幹細胞(ADSC)との細胞間相互作用に関する検討を実施した。ヒト大網よりADSCを分離、培養し、CAF（癌関連線維芽細胞）としての機能解析を行った結果、ADSCは癌細胞のEMTを誘導し、xenograftにおいて、間質内の線維化を誘導する事を確認した。胃癌細胞との共培養下において、sphere形成能を亢進させ、stemness関連蛋白の発現が増強し、癌幹細胞性獲得に関与している可能性が考えられた。更にマウス皮下腫瘍モデルにてADSCと胃癌細胞との共投与群では、5-FUの腫瘍縮小効果が抑制され、ADSCが化学療法抵抗性獲得に関与する事が示唆された。Little is known regarding the influence of adipose tissue derived stem cells (ADSC) in gastric cancer (GC).We investigated the potential effects between GC cell lines and ADSC.
The sphere-forming efficiency of GC cells was significantly increased while directly co-cultured with ADSC. OCUM2MD3 cells generated subctaneous tumors increased in size after co-injection with ADSC in mouse model. Xenografts tissue revealed the expression of αSMA was increased in tumors generated by co-injection of OCUM2MD3 with ADSC in comparison with control tumors, which corresponds to the significant increase of fibrous area. The expressions of αSMA and FAP on ADSC were confirmed by fluorescent immunostaining. We also examined whether ADSC is associated with the chemo-sensitivity of OCUM2MD3 using 5-FU. ADSC enhance sphere formation and in vivo tumor growth of GC cells. ADSC also induced 5-FU-resistance, which suggests ADSC acts as CAF in tumor microenvironment of GC.研究課題/領域番号:15K19876, 研究期間(年度):2015-04-01 – 2018-03-31出典：研究課題「胃癌微小環境における脂肪由来幹細胞の機能解析と間質線維化制御への応用」課題番号15K19876
（KAKEN：科学研究費助成事業データベース（国立情報学研究所））
（https://kaken.nii.ac.jp/ja/report/KAKENHI-PROJECT-15K19876/15K19876seika/)を加工して作成金沢大学医薬保健研究域医学系research repor
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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