1,720,965 research outputs found
Idraparinux: review of its clinical efficacy and safety for prevention andtreatment of thromboembolic disorders.
No full text1. Expert Opin Investig Drugs. 2008 May;17(5):773-7.
Idraparinux: review of its clinical efficacy and safety for prevention and
treatment of thromboembolic disorders.
Prandoni P, Tormene D, Perlati M, Brandolin B, Spiezia L.
Department of Medical and Surgical Sciences, Thromboembolism Unit, University of
Padua, 35128 - Padua, Italy. [email protected]
BACKGROUND: Idraparinux is a synthetic pentasaccharide that binds to antithrombin
with high affinity. In view of its long half-life, it is suitable for once-a-week
administration.
OBJECTIVE: To review the evidence favoring the use of idraparinux for the acute
and long-term treatment of patients with venous thromboembolism (VTE) and for the
prevention of thromboembolic events in patients with atrial fibrillation (AF).
METHODS: All preclinical and clinical studies carried out with the use of
idraparinux were sought through electronic searches of MEDLINE from January 1,
1999 up to December 31, 2007.
RESULTS: The administration of idraparinux in subcutaneous fixed doses of 2.5 mg
once weekly was found to be as effective and safe as conventional antithrombotic
therapy in the initial treatment of patients with deep vein thrombosis, but less
effective than standard therapy in the initial treatment of patients with primary
pulmonary embolism. During a 6-month extension of thromboprophylaxis, idraparinux
was effective in preventing recurrent VTE but was associated with an increased
risk of bleeding versus placebo. Finally, in patients with AF the long-term
treatment with idraparinux was as effective as vitamin K antagonists, but caused
more bleeding.
CONCLUSIONS: In its current formulation, idraparinux can be recommended only for
the initial treatment of patients with deep vein thrombosis. The bioequipotency
of a biotinylated version of idraparinux (idrabiotaparinux), whose effects can be
reversed by a neutralizing agent (avidin), is under investigation in the
treatment of VTE at present, as is the use of lower doses in patients with AF.
PMID: 18447601 [PubMed - indexed for MEDLINE
The Risk of Cancer Progression in Women With Gynecological Malignancies andThrombophilic Polymorphisms: A Pilot Case-Control Study.
No full textClin Appl Thromb Hemost. 2009 Oct;15(5):535-9. Epub 2008 Jun 29.
The risk of cancer progression in women with gynecological malignancies and
thrombophilic polymorphisms: a pilot case-control study.
Tormene D, Beltramello P, Perlati M, Brandolin B, Barbar S, De Toffoli G, Simioni
P.
Department of Medical and Surgical Sciences, Second Chair of Internal Medicine,
University of Padua Medical School, Padua, Italy. [email protected]
Cancer produces a hypercoagulable state, which might lead to thrombosis, and on
contrary, unprovoked venous thromboembolism might be the manifestation of an
occult cancer. In this pilot case-control study, we assessed the risk of
gynecological malignant diseases related to the presence of the factor V Leiden
and prothrombin G20210A polymorphisms. Fifty-two women underwent an operation for
gynecological malignancy and were enrolled in the study. Women who underwent an
operation for gynecological nonmalignant disease in the same days of cases were
considered as controls. The presence of factor V Leiden and prothrombin G20210A
was assessed in case and control groups. In all, 7 out of 52 cases were carriers
of the 2 polymorphisms compared with 20 out of 198 controls (odds ratio = 1.3;
95% confidence interval, 0.6-3.0). The results were also similar when the risk
was considered separately for the site of cancer. As for advanced and metastatic
malignancies, the odds ratios were 2.3 (95% confidence interval, 0.9-6.0) and 3.3
(95% confidence interval, 1.0-11), respectively, compared to noncancer patients.
When these 2 groups were compared to nonadvanced cancer group, the odds ratios
for carriers of polymorphisms were 2.7 (95%confidence interval, 0.7-11.0) and 3.9
(95%confidence interval, 0.8-18.6) for advanced cancer and metastatic
malignancies, respectively. Women with factor V Leiden or prothrombin G20210A
polymorphisms who developed gynecological malignancy might present with a higher
stage of cancer at the time of surgery. Larger case-control studies in similar
cohort of patients are needed to confirm these findings.
PMID: 18591179 [PubMed - indexed for MEDLINE
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
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