1,721,027 research outputs found
Antiangiogenic TKIs and advanced RAI-resistant thyroid cancer : time for rethinking treatment strategies?
No full textTherapeutic strategies in the management of patients with metastatic anaplastic thyroid cancer : review of the current literature
No full textPURPOSE OF REVIEW: Anaplastic thyroid cancer (ATC) is a rare and deadly malignancy. There is a need to speed up and support clinical research. This review article focuses on the new molecules that have been developed for the treatment of this aggressive tumor. RECENT FINDINGS: Improvement in the knowledge of pathogenesis and genetics of ATC led to the development of a variety of new molecules that may be used to treat this disease. In summary, these molecules are proteasome inhibitors, Aurora kinase inhibitors, vascular targeting agents, and gene therapies. All these molecules demonstrated a potentially therapeutic activity in metastatic ATC. To date, the largest prospective randomized multicenter, open-label, trial was conducted with combretastatin-A4. SUMMARY: More efficient drugs need to be developed through multinational efforts
Evolution of the complement system: ancient molecules and new evidences from tunicates
No full textThe complement system is a key player in innate immunity but, recently, it is becoming even more evident that complement plays also important roles in adaptive immunity.
Components of the human complement system possess unique domain structures and are classified in protein families: C3, factor B (Bf), mannan-binding protein-associated serine protease (MASP), C6 and factor I (If) family.
These complement families probably derive from exon shuffling, which created the unique domain structures of each family, and gene duplication and subsequent functional divergence, which increased the number of members in each family. Accumulating information on the complement system of vertebrates indicates that these gene duplications, which played a pivotal role in establishing the classical and the lytic pathway, occurred in jawed vertebrates. In contrast, information on complement genes of invertebrate chordates is limited and, so far, only the ascidians, such as Ciona intestinalis and Halocinthia roretzi, and the cephalochordate Branchiostoma floridae have an almost complete set of the complement gene families: C3-, Bf-, MASP-, and C6-like genes.
In the present work we demonstrate the presence of C6-, C3-, MASP-, MBL- and Bf-like genes in the colonial ascidian Botryllus schlosseri and the enhanced transcription after zymosan infection, which indicates their involvement in the ascidian immunity. The observation of a transcribed C6 gene suggest that the presence of the lytic pathway predates the appearance of the vertebrates. We are now carrying out new investigation to demonstrate a complement-related lytic activity in B. schlosseri
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
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
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