Publications by authors named "Angelo Z de Mattos"

Hepatocellular carcinoma (HCC) is one of the most common causes of cancer-related mortality. This particular type of cancer has the distinctive characteristic of mostly happening in individuals with an underlying liver disease. This makes the management of patients more challenging, since physicians must take into consideration two different conditions, the chronic liver disease and the tumor.

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Patients with cirrhosis have an increased risk of infection and differently from other complications, that over the years are improving in their outcomes, infections in cirrhotic patients are still a major cause of hospitalization and death (up to 50% in-hospital mortality). Infections by multidrug-resistant organisms (MDRO) have become a major challenge in the management of cirrhotic patients with significant prognostic and cost-related impact. About one third of cirrhotic patients with bacterial infections is infected with MDR bacteria and their prevalence has increased in recent years.

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Cirrhosis is an emerging major cause of the development of hepatocellular carcinoma (HCC), but in non-alcoholic fatty liver disease (NAFLD), up to 50% of patients with HCC had no clinical or histological evidence of cirrhosis. It is currently challenging to propose general recommendations for screening patients with NAFLD without cirrhosis, and each patient should be evaluated on a case-by-case basis based on the profile of specific risk factors identified. For HCC screening in NAFLD, a valid precision-based screening is needed.

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Mortality in cirrhosis is mostly associated with the development of clinical decompensation, characterized by ascites, hepatic encephalopathy, variceal bleeding, or jaundice. Therefore, it is important to prevent and manage such complications. Traditionally, the pathophysiology of decompensated cirrhosis was explained by the peripheral arterial vasodilation hypothesis, but it is currently understood that decompensation might also be driven by a systemic inflammatory state (the systemic inflammation hypothesis).

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Patients with cirrhosis and esophageal varices bleed at a yearly rate of 5%-15%, and, when variceal hemorrhage develops, mortality reaches 20%. Patients are deemed at high risk of bleeding when they present with medium or large-sized varices, when they have red signs on varices of any size and when they are classified as Child-Pugh C and have varices of any size. In order to avoid variceal bleeding and death, individuals with cirrhosis at high risk of bleeding must undergo primary prophylaxis, for which currently recommended strategies are the use of traditional non-selective beta-blockers (NSBBs) (, propranolol or nadolol), carvedilol (a NSBB with additional alpha-adrenergic blocking effect) or endoscopic variceal ligation (EVL).

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Introduction and objectives It has been suggested that albumin administration could alter the natural history of cirrhosis, and also, that long-term treatment with albumin might be associated with improvement in survival, control of ascites, reduction in the incidence bacterial infections, renal dysfunction, hepatic encephalopathy (HE) and hyponatremia, as well as reduction in length of hospitalization in patients with cirrhosis and ascites. The objective of the present study is to evaluate the role of albumin in the management of HE. Materiales and methods:: This is a systematic review of randomized controlled trials that evaluated the use of albumin in adult patients with cirrhosis and HE.

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Chronic infections due to hepatitis B and hepatitis C viruses are responsible for most cases of hepatocellular carcinoma (HCC) worldwide, and this association is likely to remain during the next decade. Moreover, viral hepatitis-related HCC imposes an important burden on public health in terms of disability-adjusted life years. In order to reduce such a burden, some major challenges must be faced.

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Aim: To assess the impact of the different stages of acute kidney injury (AKI) on the prognosis of patients hospitalized with decompensated cirrhosis.

Methods: This was a prospective cohort study of consecutive patients admitted in two tertiary hospitals in southern Brazil. Participants were considered eligible if they were admitted for acute decompensation of cirrhosis.

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Background: Autoimmune hepatitis (AIH) is a chronic liver disease, characterized by necroinflammation and autoimmune etiology. Studies evaluating the characteristics of patients with AIH are scarce in Brazil.

Objective: Our objective was to evaluate the profile of patients with AIH in a specialized center in Southern Brazil and to verify factors related to treatment response.

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Recently, a controversial approach suggesting the early treatment of chronic infection with hepatitis B "e" antigen-positive patients with hepatitis B virus (HBV) infection, has been proposed. The objective of this study is to systematically review medical literature regarding treatment of HBV infection in adult chronic infection with HBeAg-positive patients. A systematic review was performed according to the recommendations of the Preferred Reporting Items for Systematic Reviews and Meta-Analysis statement.

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Background And Aim: Ascites is a common complication of cirrhosis, and it is associated with increased mortality. The aim of this study was to evaluate the efficacy of long-term albumin administration in decreasing mortality and other complications of patients with cirrhosis and ascites.

Methods: A systematic review was performed using MEDLINE and Embase databases.

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Introduction And Aim: Different criteria are applied for the diagnosis of acute-on-chronic liver failure (ACLF). Our aim was to compare the performance of different ACLF diagnostic criteria for predicting mortality.

Materials And Methods: This was a prospective cohort study of adult cirrhotic patients admitted to a tertiary hospital for acute decompensation (AD) of cirrhosis.

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Article Synopsis
  • The study aimed to validate the effectiveness of certain prognostic scores for predicting mortality in Brazilian patients with acute decompensation of cirrhosis and acute-on-chronic liver failure.
  • It utilized a prospective cohort design to compare the chronic liver failure-consortium scores (CLIF-C AD and CLIF-C ACLF) against other models, including MELD and Child-Pugh, focusing on 28-day and 90-day mortality rates.
  • Results indicated that the CLIF-C ACLF score was notably effective in predicting mortality in ACLF patients, while both CLIF-C AD and other scores showed similar predictive capabilities for patients with acute decompensation.
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Objective: The main aim of this study was to evaluate the real-life survival rates of patients with intermediate-stage hepatocellular carcinoma treated with transarterial chemoembolization.

Methods: A retrospective cohort study involving 95 patients was conducted and the studied variables were analysed according to survival. Treatment response was determined using the Modified Response Evaluation Criteria in Solid Tumors assessment.

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 Renal failure in cirrhotic patients is a very severe condition. Hepatorenal syndrome has the worst prognosis among all causes of kidney failure in such patients. Hepatorenal syndrome is diagnosed especially in cirrhotic patients with ascites who develop loss renal function, despite diuretic suspension and volume expansion with albumin and for whom other causes of kidney injury have been excluded.

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Objective: The aim of this study was to compare the efficacy and costs of terlipressin and noradrenaline for the treatment of hepatorenal syndrome from the perspective of the Brazilian public health system and that of a major private health insurance.

Methods: Comparison of efficacy was performed through a systematic review with a meta-analysis of randomized-controlled trials using a random-effects model. Economic evaluation was carried out through cost minimization.

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Noninvasive diagnoses of nonalcoholic fatty-liver disease (NAFLD) involve the use of serologic markers and imaging methods, such as conventional ultrasonography (US), computed tomography, and magnetic resonance imaging. Although these methods are reliable for the noninvasive detection of moderate to severe fatty changes in the liver, they are not reliable for detecting nonalcoholic steatohepatitis (NASH) and fibrosis. New imaging technologies, such as US-based transient elastography, acoustic radiation force impulse and magnetic resonance-based elastography, can reportedly be used to determine the severity of liver fibrosis associated with NASH.

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