1,720,975 research outputs found
Research on basic mechanisms of gastric hyperalgesia in animal model of functional dyspepsia
Get PDF機能性胃腸症のメカニズムを解析するために、動物モデルを開発し、胃の痛覚に関与する因子を調べた。ラットに反復水回避ストレスを加えると、胃に病変は見られないものの、胃の痛覚が亢進した。痛覚の亢進には副腎皮質刺激ホルモン放出因子(CRF)が関与し、CRF受容体のうちCRF1ではなくCRF2受容体が関与していた。反復水回避ストレスは機能性胃腸症モデルとして有用であり、機能性胃腸症の痛みにはCRF2が重要と思われた。Repetitive WA-S developed gastric hyperalgesia even in the absence of detectable gastric pathology, suggesting its suitability for a potential animal model of FD. CRF2 receptor play an important role in gastric hyperalgesia observed after the stress. CRF2 receptor signaling may be useful therapeutic targets for FD.研究課題/領域番号:22600004, 研究期間(年度):2010–2012出典：研究課題「機能性胃腸症における胃の痛覚過敏に関わるメディエイターの解析」課題番号22600004
（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-22600004/22600004seika/）を加工して作成research repor
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Role of corticotropin-releasing factor receptor on gastric hyperalgesia associated with functional dyspepsia
Get PDF【目的】明らかな器質的病変が見られないにも関わらず痛みなどの上部消化管症状を呈す機能性胃腸症（FD）のメカニズムを明らかにするため、動物にストレスを加えたときの胃の痛覚の変化を調べ、痛覚の亢進への副腎皮質刺激ホルモン放出因子（CRF）ファミリーおよびIL-6の関与を調べた。【結果】ストレスにより胃の痛覚が亢進し、CRF2受容体拮抗薬及びIL-6中和抗体で抑制された。胃粘膜にはCRF、CRFファミリーのUCN1、UCN2及びCRF2受容体が発現し、一部は肥満細胞に発現していた。【結論】ストレスによる胃の痛覚過敏には胃粘膜のCRF2受容体及びIL-6が関与し、FDのメカニズムへの関与が示唆された。Functional dyspepsia is defined as persistent or recurrent upper gastrointestinal tract symptoms such as pain without any obvious pathological changes. We examined the changes in pain sensation of the stomach after the stress in rat. In addition, involvements of corticotropin releasing factor (CRF), Type 2 CRF receptor (CRFR2) and CRF related peptides Urocortin (UCN) 1/2/3 in gastric hyperalgesia were investigated. Repeated WAS produced gastric hyperalgesia after the stress, with no obvious lesions in the gastric mucosa. Gastric hyperalgesia was inhibited by CRFR2 antagonists. CRF, CRFR2, and UCN1/2 positive cells existed in lamina propria. CRFR2 positive cells ware increased after WAS. Mast cells co-expressed CRFR2 or UCN2 in the lamina propria. WAS developed gastric hyperalgesia even in the absence of detectable gastric pathology, suggesting its suitability for a potential animal model of FD. CRFR2 play important roles in gastric hyperalgesia observed after the stress.研究課題/領域番号:25460718, 研究期間(年度):2013-04-01 - 2017-03-31出典：「機能性胃腸症における胃の痛覚過敏への副腎皮質刺激ホルモン放出因子受容体の関与」研究成果報告書 課題番号25460718
（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-25460718/25460718seika/）を加工して作成金沢大学医薬保健研究域医学系research repor
Role of interlukin-6 through CRF2 on gastric hyperalgesia in rat model of functional dyspepsia
Get PDF機能性胃腸症モデルにおける胃の痛みに副腎皮質刺激ホルモン放出因子受容体CRF2が関与するメカニズムを明らかにするために、ストレスによって胃の痛覚過敏を引き起こす動物モデルでのCRF2関連の分子局在や、胃の痛覚へのinterlukin 6の関与を調べた。ストレスによる胃の痛覚過敏は、CRF2の拮抗薬によって抑制され、胃粘膜でCRF2の発現が亢進していた。さらに、胃の痛覚過敏はinterleukin 6 拮抗薬で抑制されることから、ストレスではCRF2が活性化され、interlukin 6が作用し、胃の痛覚亢進を引き起こすことが示唆された。Functional dyspepsia (FD) is a common gastrointestinal disorder associated with persistent or recurrent upper gastrointestinal tract symptoms such as pain without any obvious pathological changes.
Repeated water avoidance stress (WA-S) produced gastric hyperalgesia, with no obvious lesions in the gastric mucosa. Gastric hyperalgesia was inhibited by CRF and CRF2 antagonists, suggesting their involvement in gastric hyperalgesia observed after application of stress. Gastric hyperalgesia was inhibited by IL-6 neutralizing antibody. Immunofluorescence staining demonstrated CRF, CRF2, urocortin (Ucn)1, and Ucn2-positive cells in the gastric mucosa. CRF2-positive cells increased after WA-S, compared to sham stress. CRF2 and Ucn2 were expressed in the mast cells in the gastric mucosa.
CRF2 plays an important role in gastric hyperalgesia produced by stress. CRF2 signaling may be a useful therapeutic target for functional dyspepsia.研究課題/領域番号:17K09031, 研究期間(年度):2017-04-01 – 2021-03-31出典：「機能性胃腸症における胃の痛覚過敏へのCRF2を介したインターロイキン6の関与」研究成果報告書 課題番号17K09031
（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-17K09031/17K09031seika/）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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
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