1,721,005 research outputs found
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
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
Development of novel therapy targeting microenvironment in respiratory malignancy
Full text link腫瘍微小環境の線維芽細胞が産生するHGFなどの増殖因子が、EGFR変異肺がんやALK融合遺伝子陽性肺がん細胞において、分子標的薬耐性を惹起することを明らかにした。さらに、これらの増殖因子受容体の活性化を阻害すれば、微小環境による分子標的薬耐性が解除できることを示した。
一方、胸膜中皮腫の同所移植モデルにおいて、胸膜中皮腫細胞と線維芽細胞は、悪性サイトカインネットワークを形成することで腫瘍進展を促進しており、このサイトカインネットワークの構成因子が治療標的となることを明らかにした。We found that microenvironment-derived growth factors, including HGF, induced resistance to tyrosine kinase inhibitors in EGFR mutant or ALK-fusion gene positive lung cancer. The resistance caused by microenvironment could be overcome by concomitant inhibition of growth factor receptors. In the orthotopic model of mesothelioma, we discovered that mesothelioma cells and fibroblasts formed the vicious cytokine network and promoted tumor progression, indicating that factors involved in this network would be ideal therapeutic targets for mesothelioma.研究課題/領域番号:22112010, 研究期間(年度):2010-04-01 – 2015-03-31出典：研究課題「呼吸器悪性腫瘍の微小環境の特性を標的とした新規制御法の開発」課題番号22112010
（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/report/KAKENHI-PLANNED-22112010/22112010seika/）を加工して作成金沢大学がん進展制御研究所research repor
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
Formation of a non-clinical research base for treatment aimed to eradicate lung cancer by targeted drugs
Full text linkCancer cells exposed to targeted drugs emerge tolerant cells that allow some to survive as resistant cells and later proliferate. In this study, we found that EGFR-mutated lung cancer cells with low AXL expression emerge tolerant cells to the EGFR inhibitor osimertinib by increasing the expression of the transcription factor FOXA1 to activate IGF-1R. We further found that TP53 mutation and STAT3 activation induce apoptosis resistance to ALK inhibitors and cause ALK inhibitor tolerance in ALK rearranged lung cancer cells. In addition, combined use of proteasome inhibitors or STAT3 inhibitors could augment the efficacy of ALK inhibitors against ALK rearranged lung cancer cells.分子標的薬に曝露されたがん細胞は，一部が抵抗性細胞として生存し後に増殖を可能にする耐性因子を獲得して耐性腫瘍を形成する。本研究では、AXL低発現のEGFR変異肺がん細胞は転写因子FOXA1の発現が上昇しIGF-1Rを活性化させ、EGFR阻害薬オシメルチニブ抵抗性を惹起することを見出した。また、TP53変異やSTAT3の活性化はALK阻害薬に対するアポトーシス抵抗性を惹起し、ALK融合遺伝子陽性肺がんのALK阻害薬抵抗性の原因になること、プロテアソーム阻害薬やSTAT3阻害薬併用によりALK阻害薬の治療効果を増強しうることを明らかにした。研究課題/領域番号:19H03665, 研究期間(年度):2019-04-01 - 2022-03-31出典：研究課題「分子標的薬で肺がんの根治を目指す治療の非臨床研究基盤の形成」課題番号19H03665
（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-19H03665/19H03665seika/）を加工して作成金沢大学がん進展制御研究所research repor
Study to overcome metastasis and targeted drug-resistance of lung cancer
Full text link転移巣における分子標的薬耐性機構を解明するために、EGFR変異肺がんおよびALK融合遺伝子陽性肺がん細胞株を用い、がん性胸水、骨病変（骨転移）、脳病変（脳転移）における分子標的薬耐性のin vivoイメージングモデルを確立した。これらのモデルを用い、一つの腫瘍においても複数の因子により耐性が惹起されること、耐性克服には併用療法の副作用に留意した戦略を立てる必要があることを明らかにした。To elucidate mechanism of targeted drug resistance in metastatic lesions, we established in vivo imaging models for pleural carcinomatosis and bone/brain metastases, which are resistant to targeted drugs, of EGFR mutant or ALK fusion positive lung cancer cell lines. We found that resistant tumors consist of a heterogeneous mixture of functionally distinct cancer cells with different resistant mechanisms. Moreover, our observation indicated that we should be careful for toxicity of combined therapy which overcome targeted drug resistance caused by multiple mechanisms.研究課題/領域番号:24390209, 研究期間(年度):2012-04-01 – 2015-03-31出典：研究課題「肺がんの転移と分子標的薬耐性を克服する統合的研究」課題番号24390209
（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/report/KAKENHI-PROJECT-24390209/24390209seika/）を加工して作成金沢大学がん進展制御研究所research repor
Identification of real target of VEGF receptor inhibitor which shows dramatic cytotoxic effect against pleural mesothelioma
Full text link胸膜中皮腫細胞株EHMES-10においてチロシンキナーゼ活性を有した蛋白(RET)が活性型変異の結果恒常的にリン酸化されており、VEGF 受容体阻害薬であるVandetanib がRETリン酸化を阻害し殺細胞活性を示すこと、SCID マウスにEHMES-10 を移植する同所移植モデルにおいても胸腔内腫瘤および胸水形成を著明に抑制し生存期間を有意に延長することを明らかにし、胸膜中皮腫に対する有用な分子標的薬になりうる可能性を示した。研究課題/領域番号:19590900, 研究期間(年度):2007-2008出典：「胸膜中皮腫に著効を示すVEGF受容体阻害薬の真の標的分子同定と治療への応用」研究成果報告書 課題番号19590900
（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/report/KAKENHI-PROJECT-19590900/19590900seika/)を加工して作成research repor
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
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