1,720,980 research outputs found
Emerging drugs for the treatment of sarcopenia in cirrhosis of the liver
No full textIntroduction: Malnutrition and sarcopenia are common and impact the prognosis in patients with liver
cirrhosis. The etiology is multifactorial and includes periods of reduced caloric intake, increased
catabolism and direct molecular mechanisms that inhibit muscle synthesis. Although these conditions
are widely acknowledged, and there is a growing interest in their diagnosis, robust evidence regarding
the treatment and reversibility of these conditions is still lacking.
Areas covered: We have explored the current evidence on the pharmacological treatment of sarcopenia in patients with cirrhosis. Additionally, we have searched for drugs already in use and ongoing
trials for other chronic diseases.
Expert opinion: The current guidelines recommend the use of a protein-adequate diet and moderate
physical activity for treating sarcopenia in patients with cirrhosis. Currently, robust evidence is derived
only from the supplementation of Branched-Chain Amino Acids, capable of increasing muscle mass and
function. There are many drugs targeting various pathways that contribute to sarcopenia. However,
evidence is sporadic and insufficient to suggest their use in clinical practice.Novel drugs specifically
designed to enhance muscle mass and function should be developed. Finally, gender significantly
influences the type of muscle alteration and therapeutic mechanisms; therefore, future studies should
be designed taking gender differences into consideratio
Infection prevention and control programme and COVID-19 measures: effects on hospital-acquired infections in patients with cirrhosis
Get PDFBackground & aims: Bacterial infections affect survival of patients with cirrhosis. Hospital-acquired bacterial infections present a growing healthcare problem because of the increasing prevalence of multidrug-resistant organisms. This study aimed to investigate the impact of an infection prevention and control programme and coronavirus disease 2019 (COVID-19) measures on the incidence of hospital-acquired infections and a set of secondary outcomes, including the prevalence of multidrug-resistant organisms, empiric antibiotic treatment failure, and development of septic states in patients with cirrhosis. Methods: The infection prevention and control programme was a complex strategy based on antimicrobial stewardship and the reduction of patient's exposure to risk factors. The COVID-19 measures presented further behavioural and hygiene restrictions imposed by the Hospital and Health Italian Sanitary System recommendations. We performed a combined retrospective and prospective study in which we compared the impact of extra measures against the hospital standard. Results: We analysed data from 941 patients. The infection prevention and control programme was associated with a reduction in the incidence of hospital-acquired infections (17 vs. 8.9%, p <0.01). No further reduction was present after the COVID-19 measures had been imposed. The impact of the infection prevention and control programme remained significant even after controlling for the effects of confounding variables (odds ratio 0.44, 95% CI 0.26-0.73, p = 0.002). Furthermore, the adoption of the programme reduced the prevalence of multidrug-resistant organisms and decreased rates of empiric antibiotic treatment failure and the development of septic states. Conclusions: The infection prevention and control programme decreased the incidence of hospital-acquired infections by nearly 50%. Furthermore, the programme also reduced the prevalence of most of the secondary outcomes. Based on the results of this study, we encourage other liver centres to adopt infection prevention and control programmes. Impact and implications: Infections are a life-threatening problem for patients with liver cirrhosis. Moreover, hospital-acquired infections are even more alarming owing to the high prevalence of multidrug-resistant bacteria. This study analysed a large cohort of hospitalised patients with cirrhosis from three different periods. Unlike in the first period, an infection prevention programme was applied in the second period, reducing the number of hospital-acquired infections and containing multidrug-resistant bacteria. In the third period, we imposed even more stringent measures to minimise the impact of the COVID-19 outbreak. However, these measures did not result in a further reduction in hospital-acquired infections
The Impact of Transjugular Intrahepatic Portosystemic Shunt on Nutrition in Liver Cirrhosis Patients: A Systematic Review
Get PDFBackground and Aims: Liver cirrhosis leads to clinically significant portal hypertension. Transjugular intrahepatic portosystemic shunt (TIPS) has been shown to effectively reduce the degree of portal hypertension and treat its complications. However, poor nutritional status has been shown to be associated with hepatic encephalopathy, acute on chronic liver failure, and mortality following TIPS placement. The purpose of this systematic review is to create another perspective and evaluate the effect of TIPS placement on the nutritional status of patients with liver cirrhosis. Methods: A comprehensive search of four major electronic databases was conducted to identify studies that assessed the nutritional status of cirrhotic patients before and after TIPS placement. The risk of bias was evaluated using ROBINS-I guidelines. Results: Fifteen studies were analyzed in this review. The results indicate that among the 11 studies that evaluated changes in ascites-free weight and body mass index or body cell mass, 10 reported an improvement in one or more measures. Furthermore, all seven studies that evaluated changes in muscle mass demonstrated an increase in muscle mass. Among the four studies that evaluated subcutaneous fat tissue, three showed a significant expansion, while two out of three studies evaluating visceral fat tissue reported a significant reduction. Conclusions: The results of this systematic review suggest that TIPS placement is associated with improvement in the nutritional status of cirrhotic patients, indicated by an increase in ascites-free weight, body mass index, and muscle mass. Additionally, TIPS placement leads to a shift in the distribution of fat mass, with a preference for subcutaneous over visceral adipose tissue. Notably, sarcopenic patients seem to benefit the most from TIPS placement in terms of nutritional status
What the Patient Thinks and What the Patient Does: Placebo, Nocebo, and Therapy Adherence in Ulcerative Colitis
Get PDF: Patients' attitude toward therapy and adherence to treatment are central in determining the long-term outcomes of medical treatment in ulcerative colitis. A complex interplay of differing factors modulates the likelihood of persisting in or discontinuing treatment, including patients' beliefs and concerns about adverse effects of drugs, as well as the interactions with medical staff. Emotional attitude and expectancies are reflected in the so-called placebo and nocebo effects which influence patients' choices to adhere to or discontinue treatment. They represent important confounding factors in clinical trials and are amplified when the evaluation relies on patient-reported outcomes more than on objective measurements. The therapeutic gain related to placebo effects is likely also relevant in day-to-day practice, but few data are available. The aim of the present narrative review is to provide critical insight into the adherence to therapy in ulcerative colitis and its interaction with the emotional component of the effects of therapy, resulting in the placebo/nocebo effects. Understanding the mechanisms underlying patient behavior may help identify the most appropriate therapeutic approach and treatment schedule to optimize adherence and outcomes in individual patients with UC
A Comparative Study of Dietary Intake, Nutritional Status, and Frailty in Outpatients and Inpatients with Liver Cirrhosis
Get PDFBackground: Liver cirrhosis is associated with significant nutritional challenges, including malnutrition, sarcopenia, and frailty, which impact clinical outcomes. The severity of these issues may vary between inpatient and outpatient settings, but there is a limited understanding of how these conditions manifest in these populations. This study aims to compare the nutritional status, dietary intake, and frailty in outpatients and inpatients with liver cirrhosis and to explore potential sex-specific differences. Methods: This prospective observational study enrolled 195 patients with liver cirrhosis from the Gastroenterology ward and Outpatient Clinic of Policlinico Umberto I, Sapienza University of Rome, between May 2023 and July 2024. Nutritional status was assessed using anthropometric measurements, dietary recall, and food frequency questionnaires. Sarcopenia was evaluated using the SARC-F questionnaire and handgrip strength. Frailty was assessed using the Liver Frailty Index (LFI). Data on clinical characteristics, comorbidities, and disease severity were also recorded. Results: The inpatient group (n = 69) had significantly lower BMI, mid-upper arm circumference, and triceps skinfold compared to outpatients (n = 126). Inpatients exhibited higher frailty, with 73.9% classified as frail according to the LFI, compared to 39.6% in outpatients (p < 0.001). Dietary intake revealed that 91% of inpatients had an energy intake deficit compared to 76% of outpatients (p = 0.009). Protein intake was inadequate in 84% of inpatients versus 61% of outpatients (p < 0.001). Sex-specific analysis showed that females had a higher prevalence of sarcopenia than males (64.4% vs. 38.2%, p < 0.001) and experienced more significant protein deficits (74.3% vs. 57.6%, p = 0.021). Females also had higher LFI score (4.77 ± 0.88 vs. 4.45 ± 0.91, p = 0.034). Multivariate analysis showed that CTP, LFI, and protein deficit are independently associated with hospitalization. Conclusions: Inpatients with liver cirrhosis are at higher risk for malnutrition, frailty, and inadequate nutrient intake compared to outpatients, emphasizing the need for targeted nutritional interventions in hospital settings. Additionally, females with cirrhosis are more prone to sarcopenia and frailty, requiring gender-specific approaches to nutrition
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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