408 research outputs found
Calling all “Fiberhoods”: Google Fiber and the Politics of Visibility
This is the author accepted manuscript. Copyright 2015 SAGE PublicationsThis essay examines the promise of transformation and initial outcomes of Google’s “Fiber for Communities” project in Kansas City, Kansas and Kansas City, Missouri. Through a discourse analysis of industry and popular press, press releases, Google’s official blog and YouTube channel, and user-generated content from Kansas City residents from 2010-2012, the essay highlights the ways in which Google promised to transform the image and significance of Kansas City, upgrade experiences of internet access and use, and experiment with new deployment models for large scale fiber optic infrastructure in the US. However, the author focuses on how the process of transformation rendered certain pre-existing digital divides and inequities more visible rather than erasing them
The Spatial Self: Location-Based Identity Performance on Social Media
This is the author's final manuscript. Copyright 2014 SAGE PublicationsAs a growing number of social media platforms now include location information from their users, researchers are confronted with new online representations of individuals, social networks, and the places they inhabit. To better understand these representations and their implications, we introduce the concept of the “spatial self”: a theoretical framework encapsulating the process of online self-presentation based on the display of offline physical activities. Building on previous studies in social science, humanities, and computer and information science, we analyze the ways offline experiences are harnessed and performed online. We first provide an encompassing interdisciplinary survey of research that investigates the relationships between location, information technology, and identity performance. Then, we identify and characterize the spatial self as well as examine its occurrences through three case studies of popular social media sites: Instagram, Facebook, and Foursquare. Finally, we offer possible research directions and methodological considerations for the analysis of geocoded social media data
Role of Probiotics in Non-alcoholic Fatty Liver Disease: Does Gut Microbiota Matter?
Non-alcoholic fatty liver disease (NAFLD) is the hepatic consequence of metabolic syndrome, which often also includes obesity, diabetes, and dyslipidemia. The connection between gut microbiota (GM) and NAFLD has attracted significant attention in recent years. Data has shown that GM affects hepatic lipid metabolism and influences the balance between pro/anti-inflammatory effectors in the liver. Although studies reveal the association between GM dysbiosis and NAFLD, decoding the mechanisms of gut dysbiosis resulting in NAFLD remains challenging. The potential pathophysiology that links GM dysbiosis to NAFLD can be summarized as: (1) disrupting the balance between energy harvest and expenditure, (2) promoting hepatic inflammation (impairing intestinal integrity, facilitating endotoxemia, and initiating inflammatory cascades with cytokines releasing), and (3) altered biochemistry metabolism and GM-related metabolites (i.e., bile acid, short-chain fatty acids, aromatic amino acid derivatives, branched-chain amino acids, choline, ethanol). Due to the hypothesis that probiotics/synbiotics could normalize GM and reverse dysbiosis, there have been efforts to investigate the therapeutic effect of probiotics/synbiotics in patients with NAFLD. Recent randomized clinical trials suggest that probiotics/synbiotics could improve transaminases, hepatic steatosis, and reduce hepatic inflammation. Despite these promising results, future studies are necessary to understand the full role GM plays in NAFLD development and progression. Additionally, further data is needed to unravel probiotics/synbiotics efficacy, safety, and sustainability as a novel pharmacologic approaches to NAFLD
Then and now: the progress in hepatitis B treatment over the past 20 years.
The ultimate goals of treating chronic hepatitis B (CHB) is prevention of hepatocellular carcinoma (HCC) and hepatic decompensation. Since the advent of effective antiviral drugs that appeared during the past two decades, considerable advances have been made not only in controlling hepatitis B virus (HBV) infection, but also in preventing and reducing the incidence of liver cirrhosis and HCC. Furthermore, several recent studies have suggested the possibility of reducing the incidence of recurrent or new HCC in patients even after they have developed HCC. Currently, six medications are available for HBV treatment including, interferon and five nucleoside/nucleotide analogues. In this review, we will examine the antiviral drugs and the progresses that have been made with antiviral treatments in the field of CHB
Student Leadership in a Library-Initiated Experiential Learning Project
This chapter discusses aspects of Undergraduates Speak: Our Rights and Access, a library-initiated and student-led pilot project aimed at advancing educational initiatives in the realm of scholarly communication. The project provided undergraduate students with opportunities to engage in experiential learning. Experiential learning, commonly defined as “learning by doing,” emphasizes the role that experience and self-reflection play in the learning process. In recent years, universities across the country have increasingly committed to providing such opportunities for undergraduate students. One reason for this emphasis is because experiential activities have a demonstrat¬ed impact on student retention and engagement. Among these high-impact practices are undergraduate research, internship, and service-learning opportunities. This chapter examines all three via Undergraduates Speak, where undergraduate students actively participated in exploratory research at multiple stages along the research continuum
The Use of Palliative Performance Score in Patients with End-Stage Liver Disease
â—Ź Palliative Care services are often underutilized in patients with End-Stage Liver Disease (ESLD) and often only initiated at the end of life
â—Ź The Palliative Performance Score (PPS) is an important tool used in Palliative Care to assess functional status
â—Ź PPS has five functional dimensions: ambulation, activity level and evidence of disease, self-care, oral intake, and level of consciousness
â—Ź The aim of this study is to determine if there is a correlation between Model for End-Stage Liver Disease (MELD) score and PPS in ESLD patients
â—Ź MELD is used to predict mortality and to prioritize liver transplant allocation in ESLD patientshttps://jdc.jefferson.edu/medposters/1011/thumbnail.jp
Diagnosing Non-HFE Hereditary Hemochromatosis
A 63-year-old Caucasian female presented for evaluation of abnormal bile duct appearance on ERCP after being diagnosed with gallstone pancreatitis, duodenal ulcers and gastritis at another hospital
Helpful or Harmful? A Case Report of Nutritional Supplements Causing Drug-Induced Liver Injury
Herbal supplement-induced liver injury represents a growing concern in the body of drug-induced liver injury (DILI) literature, with recent studies in mainland China, Iceland, and the United States reporting estimated rates of herb/dietary supplement-induced liver injury (HILI) between 1.16-6.38 per 100,000 (Björnsson et al., 2013; Shen et al., 2019; Vega et al., 2017). Notably, a recent 2020 study demonstrated an increasing prevalence of hepatotoxicity secondary to herbal and dietary supplements in the US and worldwide (Zheng et al., 2020). Recognizing the hepatotoxicity of various supplements is crucial, given the increasing usage of dietary and herbal supplements and the lack of regulation of herbal supplements in the United States.
HRP-AID is marketed as a twice-daily immune system booster to reduce the intensity and frequency of cold sore outbreaks. The product ingredients include 200 mg ascorbic acid, 20 mcg cholecalciferol, 20 mg a-tocopherol, 10 mg pyridoxine HCl, 50 mcg methylcobalamin, 25 mg zinc citrate, 70 mcg selenium, 250 mg L-lysine, 50 mg Astralagus extract (Astragalus membranaceus), 50 mg Echinacea (Echinacea purpurea), 50 mg garlic powder (Allium salivum), 50 mg natural caffeine (coffee arabica), 50 mg olive leaf extract Oleuropin 20% (Olea Europaea), 50 mg oregano powder (Thymus captatus), 50 mg of elderberry extract (Sambucus nigra) and 50 mg Red Panax ginseng extract (Panax ginseng). A literature review demonstrates that this is the first reported case of DILI secondary to HRP-AID supplementation
Presence and Implications of Sarcopenia in Non-alcoholic Steatohepatitis.
Sarcopenia, defined as the loss of muscle strength, mass, and functionality, confers a poor prognosis in the setting of cirrhosis. Given its clinical significance, a better understanding of the underlying mechanisms leading to cirrhosis, sarcopenia, and their co-occurrence may improve these patients\u27 outcomes. Non-alcoholic steatohepatitis (NASH) shares many of the same etiologies as sarcopenia, including insulin resistance, chronic inflammation, and ectopic adipocyte deposition, which are hallmarks of metabolic syndrome (MS). NASH thus serves as a prime candidate for further exploration into the underlying pathophysiology and relationship between these three conditions. In this review, we discuss the natural history of NASH and sarcopenia, explore the interplay between these conditions in the scope of MS, and seek to better define how an assessment of muscle mass, strength, and functionality in this population is key to improved diagnosis and management of patients with sarcopenia and NASH
Coronary Artery Disease and Nonalcoholic Fatty Liver Disease: Clinical Correlation Using CT Coronary Calcium Scans
Introduction: Nonalcoholic fatty liver disease (NAFLD) and coronary artery disease (CAD) have been explored with coronary angiography which showed a link between severe NAFLD and CVD risk. This study’s aim is to determine if CT coronary artery calcium (CAC) scores used to determine CAD severity in asymptomatic populations can help predict presence of NAFLD.
Methods: Retrospective cross-sectional study of positive CT CAC scores and liver imaging with either CT, ultrasound, or MRI of the abdomen or CT of the chest. Drinking 7 or 14 drinks per week for a woman or man respectively and chronic viral hepatitis diagnosis were excluding criteria. CT CAC scores and hepatic steatosis were correlated by chi-squared analysis. Age, sex, lipid and liver panels, weight, blood pressure, and hemoglobin A1c were correlated to CAD severity and NAFLD by logistic regression.
Results: 134 patients with a median age of 63 years (IQR 57-69), 65% male, BMI 28.5 (IQR 23.9-31.3), and 8% diabetes. CAD severity was not associated with presence of hepatic steatosis (p = 0.36). Multivariate logistic regression showed a link between hepatic steatosis, CAD severity, BMI over 30 (p = 0.02), and diabetes (p = 0.01). There were associations between hepatic steatosis with triglycerides (p = 0.03) and CAD severity with AST (p = 0.02).
Discussion: In patients with CAD detected using a positive CAC CT scan, we determined that BMI over 30 and diabetes were markers of increased NAFLD risk. We determined there was no direct relationship between CAD and hepatic steatosis presence
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