1,720,968 research outputs found
NAFLD: A multisystem disease
No full textNon-alcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease in Western countries that is predicted to become also the most frequent indication for liver transplantation by 2030. Over the last decade, it has been shown that the clinical burden of NAFLD is not only confined to liver-related morbidity and mortality, but there is now growing evidence that NAFLD is a multisystem disease, affecting extra-hepatic organs and regulatory pathways. For example, NAFLD increases risk of type 2 diabetes mellitus (T2DM), cardiovascular (CVD) and cardiac diseases, and chronic kidney disease (CKD). Although the primary liver pathology in NAFLD affects hepatic structure and function to cause morbidity and mortality from cirrhosis, liver failure and hepatocellular carcinoma, the majority of deaths among NAFLD patients are attributable to CVD. This narrative review focuses on the rapidly expanding body of clinical evidence that supports the concept of NAFLD as a multisystem disease. The review discusses the factors involved in the progression of liver disease in NAFLD and the factors linking NAFLD with other extra-hepatic chronic diseases, such as T2DM, CVD, cardiac diseases and CKD. The review will not discuss NAFLD treatments as these are discussed elsewhere in this issue of the Journal. For this review, PubMed was searched for articles using the keywords “non-alcoholic fatty liver disease” or “fatty liver” combined with “diabetes”, “cardiovascular (or cardiac) disease”, “cardiovascular mortality” or “chronic kidney disease” between 1990 and 2014. Articles published in languages other than English were excluded
Ectopic fat, insulin resistance, and nonalcoholic Fatty liver disease: implications for cardiovascular disease
No full textEctopic fat accumulation in the liver causes nonalcoholic fatty liver disease (NAFLD), which is the most common cause of chronic liver disease in Western countries. Ectopic liver lipid, particularly diacylglycerol, exacerbates hepatic insulin resistance, promotes systemic inflammation, and increases risk of developing both type 2 diabetes mellitus and cardiovascular disease. Increasing evidence suggests that NAFLD is an emerging risk factor for cardiovascular disease, and although there are currently no licensed treatments for NAFLD per se, current evidence suggests that statin treatment is safe in NAFLD. Presently, there is insufficient evidence to indicate that statins or other cardioprotective agents, such as angiotensin receptor blockers, are effective in treating NAFLD. In this brief narrative review, we discuss the diagnosis of NAFLD and the role of ectopic liver fat to cause insulin resistance and to increase risk of both type 2 diabetes mellitus and cardiovascular disease. For this review, PubMed was searched for articles using the key words non-alcoholic fatty liver disease or fatty liver combined with diabetes risk, cardiovascular risk, and cardiovascular mortality between 1990 and 2014. Articles published in languages other than English were exclude
Nonalcoholic fatty liver disease: a novel cardiometabolic risk factor for type 2 diabetes and its complications
No full textContext: Nonalcoholic fatty liver disease (NAFLD) is increasingly diagnosed worldwide and is the most common chronic liver disease in Western countries. In this review, we discuss the role of NAFLD as a novel cardiometabolic risk factor for the development of type 2 diabetes (T2DM) and for the development of major chronic complications and poor glycemic control in people with established T2DM. Evidence Acquisition: This is a clinical, narrative review and not a systematic review and meta-analysis. PubMed was extensively searched for articles using the keywords “nonalcoholic fatty liver disease” or “fatty liver” combined with “diabetes risk,” “cardiovascular risk,” “cardiovascular mortality,” “chronic kidney disease,” or “diabetic nephropathy” between 1990 and 2012. Articles published in languages other than English were excluded from the analysis. Evidence Synthesis: NAFLD exacerbates hepatic insulin resistance and increases the risk of developing T2DM. Growing evidence also indicates that NAFLD may worsen glycemic control in people with T2DM and may contribute to the development and progression of the most important chronic complications of diabetes, such as cardiovascular disease and chronic kidney disease. Conclusions: The adverse impact of NAFLD on risk for T2DM and its major chronic vascular complications deserves particular attention among endocrinologists/cardiologists/hepatologists, in view of the implications for screening and surveillance strategies in the growing number of patients with NAFLD. Clinicians who manage patients with NAFLD should not only focus on liver disease, but should also recognize the increased risk of developing T2DM and its chronic vascular complications and undertake early, aggressive risk factor modification. <br/
Diagnosis and management of non-alcoholic fatty liver disease and its hemostatic/thrombotic and vascular complications
No full textNonalcoholic fatty liver disease (NAFLD) represents a spectrum of progressive liverdisease encompassing simple steatosis, nonalcoholic steatohepatitis (NASH), fibrosis,and, ultimately, cirrhosis. NAFLD is strongly associated with features of the metabolicsyndrome including abdominal overweight/obesity, hypertension, atherogenic dyslipidemia,glucose intolerance, or type 2 diabetes. With the advent of increasinglysedentary lifestyles and changing dietary patterns, the prevalence of obesity andinsulin resistance has increased and, with this, NAFLD has rapidly become the mostcommon cause of chronic liver disease in many developed countries. Importantly,accumulating evidence indicates that NAFLD is strongly associated with a prothrombotictendency, which may, at least in part, contribute to the increased risk ofatherothrombotic events observed in these patients. NAFLD, especially in its necroinflammatoryform (NASH), releases a variety of proinflammatory and prothromboticmediators that play important roles in the development and progression of acuteatherothrombotic complications. NAFLD also exacerbates systemic and hepatic insulinresistance and causes atherogenic dyslipidemia. The purpose of this review is to brieflydiscuss the epidemiology and diagnosis of NAFLD, to summarize the rapidly expandingbody of evidence that supports a strong association between NAFLD and variousdisorders of coagulation and fibrinolysis and their implications for the development ofatherothrombotic complications, and to discuss some of the treatment options thatmay influence both NAFLD and its related vascular complications
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
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
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