1,721,006 research outputs found
Impact of Disease-Modifying Antirheumatic Drugs on Cognitive Function in Older Adults with Rheumatoid Arthritis
Full text link: Cognitive impairment poses significant challenges for aging populations. Systemic inflammation, a hallmark of rheumatoid arthritis (RA), has been implicated in neurodegeneration through mechanisms including blood-brain barrier disruption, microglial activation, and cytokine-mediated neuronal damage. This review examines the potential impact of disease-modifying antirheumatic drugs (DMARDs) on cognitive function in RA, focusing on the inflammatory pathways linking systemic inflammation to neuroinflammation and cognitive decline. DMARDs, categorized into conventional synthetic (csDMARDs), biologic (bDMARDs), and targeted synthetic (tsDMARDs) classes, modulate immune responses through distinct mechanisms. Evidence suggests that DMARDs, particularly bDMARDs targeting proinflammatory cytokines such as TNF-α and IL-6, may mitigate neuroinflammatory processes and preserve cognitive function. However, the cognitive impact of csDMARDs such as methotrexate is complex, with conflicting reports regarding its role in vascular dementia. Emerging therapies such as Janus kinase inhibitors (JAK-i) offer promise in modulating central inflammation, though clinical evidence remains limited. While some studies highlight protective effects of DMARDs against dementia, findings are inconsistent, hindered by heterogeneity in study design, patient demographics, and cognitive assessment methods. This review underscores the need for personalized treatment strategies, integrating RA management with cognitive health considerations. Future research should prioritize robust, prospective studies with long-term follow-up, incorporating neuroimaging and biomarker analysis to elucidate the mechanisms underpinning DMARD-associated cognitive outcomes. A better understanding of the involved inflammatory pathways in RA and the potential effects of DMARDs could lead to improved therapeutic approaches, enhancing quality of life for patients with RA and potentially benefiting broader strategies in preventing or treating dementia
Thyroid function and the risk of fibrosis of the liver, heart and lung in humans: Protocol for a systematic review and meta-analysis
Full text linkReview question
What is the association of thyroid function with the risk of fibrosis of the liver, heart and lung in humans
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
Clusters of risk factors in metabolic syndrome and their influence on central blood pressure in a global study
Full text linkThe effect of metabolic syndrome (MetS) and clusters of its components on central blood pressure (CBP) has not been well characterized. We aimed to describe the effect of MetS and clusters of its components on CBP in a large population and to identify whether this effect differs in men and women. We studied 15,609 volunteers (43% women) from 10 cohorts worldwide who participated in the Metabolic syndrome and Artery REsearch Consortium. MetS was defined according to the NCEP-ATP III criteria (GHTBW, glucose, high-density lipoprotein cholesterol, triglyceride, blood pressure, waist circumference). CBP was measured noninvasively and acquired from pulse wave analysis by applanation tonometry. MetS was associated with a 50% greater odds of having higher CSBP. After controlling for age, male sex, non HDL cholesterol, diabetes mellitus, and mean arterial pressure, only specific clusters of MetS components were associated with a higher CSBP; and some of them were significant in women but not in men. We identified “risky clusters” of MetS variables associated with high CSBP. Future studies are needed to confirm they identify subjects at high risk of accelerated arterial aging and, thus, need more intensive clinical management
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