1,720,963 research outputs found
Minocycline Prevents Depression-like Behavior After Co-administration With Dexamethasone or Cyclosporine-A in Mice
No full textBackground: In animal studies, minocycline (Mcy) has been proven to have antidepressant effects. In addition to modulating peripheral and central pro-inflammatory pathways, Mcy may regulate the hypothalamic-pituitary-adrenal (HPA) axis and the mechanistic target of rapamycin (mTOR) signaling pathway. This study aims to evaluate the antidepressant-like effect of Mcy in mice following injection of dexamethasone (Dex) or cyclosporine-A (CsA).
Methods: Male NMRI mice were randomly divided into eight groups of 6, including control, Dex 0.25 mg/kg, CsA 20 mg/kg, Mcy 40 mg/kg, Dex+Mcy, Dex+fluoxetine 20 mg/kg, CsA+Mcy, and CsA+fluoxetine. All drugs were injected intraperitoneally (except for Dex, which was subcutaneous injection) once daily for 3 days. The locomotor activity, forced swimming test (FST), and sucrose preference (SP) test were performed on day 4.
Results: Mcy alone reduced immobility time in the FST (27.0±6.4 s) compared to the control group (104±3.9 s) (P<0.001). After the co-administration of Mcy and Dex, the immobility time significantly decreased (79.5±6.5 s) compared to the Dex group (P<0.001). It also decreased following the co-administration of Mcy and CsA (67.5±20.8 s) compared to the CsA group (P<0.001). Results were similar in the groups treated with fluoxetine plus Dex or CsA. Significant differences were not observed in the locomotor activity test.
Conclusion: Mcy prevents depression-like behavior in mice during the FST when it is co-administrated with CsA or Dex. The possibility of the positive effect of Mcy on the HPA axis and the mTOR signaling pathway should be examined in further studies
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
Evaluating the Effect of Orlistat Administration on Depressive Behavior in Mice Following Inducing Depression by Water Avoidance Stress Model
No full textIntroduction: The weight-loss drugs can induce depression. Orlistat is one of the common weight-loss drugs, but preclinical studies about its effect on mood have not been performed. The aim of this study was evaluating the effect of orlistat alone and following inducing stress on mice depressive behavior.
Methods: In this fundamental-applied study, male white mice (27±2 g), in six groups having 7 animals were used. Orlistat was administered orally and imipramine (positive control) was injected intraperitonealy daily, depression was induced by the water avoidance stress (WAS) model during 14 days. The activity was evaluated by the Locomotor Activity Test, depression was assessed by measuring the immobility time during the forced swimming test (FST), food consumption in novelty suppressed feeding test (NSFT), and the sucrose preference test.
Results: Orlistat (25 mg/kg) did not change the locomotor activity. Stress increased the duration of immobility in the forced swimming test compared to the stress control group (98±2.2 seconds, P0.05). The difference in the results of latency and food consumption during novelty suppressed feeding test in orlistat group compared to the control group and between orlistat-WAS group compared with the WAS alone group were insignificant. In orlistat-WAS group the sucrose preference increased (69/8 %). Imipramine reduced depressive behavior in mice.
Conclusion: Orlistat administration did not induce depressive behavior in animals and it did not augment depression when administered during WAS. Evaluating the effect of chronic orlistat administration on depressive behavior is suggested
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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