Publications by authors named "Tiago Seva Pereira"

Article Synopsis
  • The study investigates the effectiveness of non-invasive liver fibrosis markers, such as APRI and FIB-4, in children with autoimmune hepatitis, given the risks associated with liver biopsies.
  • A total of 28 pediatric patients were divided based on liver stiffness measurement (LSM) using transient liver elastography, with 71% showing significant fibrosis (≥F2).
  • Results indicate that there is a strong correlation between LSM and the serum markers APRI, FIB-4, and platelet count, suggesting they can be reliable indicators of liver fibrosis severity in this population.
View Article and Find Full Text PDF

Introduction: The use of natural products for therapeutic purposes is a common practice throughout the world, in part, due to the global obesity epidemic and the search for products with appetite suppression and weight loss properties, which include nutritional supplements, vitamins and minerals to herbal products. It is known that such products may be associated with various adverse health effects. Thus, the objective of this study is to report a series of cases of patients, who presented fulminant liver failure (HFI) requiring liver transplantation (LT), related to the consumption of products used for weight loss.

View Article and Find Full Text PDF

Giant hepatic hemangiomas are occasional in patients with cirrhosis. It remains a challenge to decide on the need for treatment and choose the most appropriate intervention. A 62-year-old woman was recently diagnosed with cirrhosis and complained of upper abdominal fullness, reduction in oral food intake, and weight loss of 6 kg over the last three years.

View Article and Find Full Text PDF

COVID-19 is commonly associated with high serum levels of pro-inflammatory cytokines, and the post-infection status can disturb self-tolerance and trigger autoimmune responses. We are reporting a 45-year-old male who was admitted with fatigue, jaundice, elevated liver enzymes (with cholestatic pattern), and acute kidney injury two weeks after recovering from a mild SARS-CoV-2 infection. Serologies for viral hepatitis and anti-mitochondrial antibody were negative, while anti-nuclear and anti-smooth muscle antibodies were positive.

View Article and Find Full Text PDF

Hepatitis B virus (HBV) is intrinsically oncogenic and related to hepatocellular carcinoma (HCC). Predictive scores of HCC have been developed but have been poorly studied in admixed populations. Therefore, we aimed to evaluate the performance of PAGE-B and mPAGE-B scores for HCC prediction in HBV Brazilian patients and factors related to HCC occurrence.

View Article and Find Full Text PDF

Rationale: Lysosomal acid lipase deficiency (LAL-D) is a poorly diagnosed genetic disorder characterized by the accumulation of cholesteryl esters and triglycerides in many tissues, leading to dyslipidemia and cardiovascular complications. In the liver, deposits are found within hepatocytes and Kupffer cells, generating microvesicular steatosis, progressive fibrosis, and cirrhosis. Sebelipase alfa is the target therapy which can improve laboratory changes and reduce the progression of liver damage, but this is not yet widely available.

View Article and Find Full Text PDF
Article Synopsis
  • Liver transplant is the primary treatment for hepatocellular carcinoma, but there's a high demand for available organs, making patient selection crucial to reduce recurrence and graft loss.
  • The study evaluated the correlation between the New York/California (NYCA) score and tumor recurrence in 214 liver transplant patients, highlighting the role of alpha fetoprotein as a prognostic marker.
  • Results showed that patients with tumor recurrence had significantly higher NYCA scores, indicating its potential utility in identifying individuals at greater risk for recurrence after transplantation.
View Article and Find Full Text PDF
Article Synopsis
  • Natalizumab, an anti-integrin monoclonal antibody, is used for autoimmune disorders like multiple sclerosis, but it can rarely cause liver injury, typically presenting as non-severe acute hepatitis after the first or subsequent doses.
  • A case study of a 60-year-old woman showed she developed jaundice and severe liver enzyme increases just one day after her first natalizumab infusion, with lab tests revealing signs of drug-induced liver injury.
  • The patient was treated with oral prednisone, leading to her progressive recovery and normalization of liver function, highlighting the need for physicians to monitor for early-onset hepatitis in new natalizumab patients, particularly women with multiple sclerosis.
View Article and Find Full Text PDF
Article Synopsis
  • - Hepatocellular carcinoma (HCC) is the leading type of liver cancer, making up 90% of liver tumors, and treatment relies on factors like tumor size and liver function, with liver transplants being the best option for cure according to strict criteria.
  • - In Brazil, the Brazilian Criteria for liver transplants considers HCC tumors starting from 2 cm, contrasting with the original Milan Criteria, which allows for tumors of a different size and number.
  • - A study in a university hospital over 10 years found that out of 485 liver transplants, 243 had HCC, mainly affecting men with hepatitis C, and patients with tumors meeting the Milan Criteria had better survival rates compared to those that did
View Article and Find Full Text PDF

Fibroblast growth factor 21 (FGF21) signaling and genetic factors are involved in non-alcoholic fatty liver disease (NAFLD) pathogenesis. However, these factors have rarely been studied in type 2 diabetes mellitus (T2D) patients from admixed populations such as in those of Brazil. Therefore, we aimed to evaluate rs738409 patanin-like phospholipase domain-containing protein () and rs499765 polymorphisms in T2D, and their association with NAFLD, liver fibrosis, and serum biomarkers (FGF21 and cytokeratin 18 levels).

View Article and Find Full Text PDF

Hepatocellular carcinoma (HCC) is the most common primary neoplasm of the liver, mainly secondary to cirrhosis caused by hepatitis C virus. Liver transplant (LT) is considered the best treatment because, in addition to removing the tumor, it also removes the underlying cirrhotic liver. The Milan criteria for LT have limitations because they do not consider the biological characteristics of the tumor.

View Article and Find Full Text PDF

Hepatocellular carcinoma (HCC) is the sixth leading cause of cancer in the world, and liver transplant (LT) is a good therapeutic option in selected cases because it treats the neoplasm and the underlying disease. Recurrence after LT is usually aggressive and has low survival; thus, an adequate selection of recipients is ideal. The new models aim to assess the individual risk of HCC recurrence in patients undergoing LT and to improve post-LT survival.

View Article and Find Full Text PDF
Article Synopsis
  • Hepatitis C treatment has evolved from older interferon therapies to newer oral direct-acting antivirals (DAAs), resulting in higher success rates and fewer side effects.
  • This study assessed the effectiveness and safety of DAAs in 532 patients with chronic hepatitis C treated at two university centers in Brazil, focusing on demographic and clinical data alongside treatment outcomes.
  • The results showed a significant overall sustained virologic response rate of 92.6%, with certain factors like hepatic encephalopathy and esophageal varices linked to treatment failure.
View Article and Find Full Text PDF
Article Synopsis
  • The study focuses on the reasons for performing percutaneous liver biopsies (PLB) and the associated complications in an outpatient setting over five years.
  • It analyzed 532 biopsies from 524 patients, finding that MAFLD has become a more common reason for biopsies compared to HCV infection, while pain during the procedure was more frequently reported by females.
  • The overall complication rate was low, with only 2.1% experiencing serious complications and no deaths, highlighting the safety of PLB but emphasizing the need for better pain management strategies, especially for women.
View Article and Find Full Text PDF

Objectives: Despite higher rates of sustained virologic response (SVR), important concerns remain when patients with decompensated cirrhosis due to hepatitis C virus (HCV) are treated with direct-acting antiviral agents (DAA). Questions include efficacy, safety, and the magnitude of liver function improvement. Here, we aimed to evaluate HCV treatment data in this specific population in Brazil.

View Article and Find Full Text PDF

Introduction And Objectives: The EncephalApp Stroop Test was developed to more easily diagnose minimal hepatic encephalopathy (MHE). A cut-off of >274.9sec (ONtime+OFFtime) reached a 78% sensitivity and 90% specificity in the validation study, but it has been poorly studied in Brazil.

View Article and Find Full Text PDF

Cryptococcus neoformans is rarely associated with peritonitis in cirrhotic patients; nevertheless, it has a high mortality rate. Early diagnosis and prompt treatment may be the determining prognostic factors. This is a report of two patients awaiting a liver transplant who had opposite outcomes after the diagnosis of spontaneous cryptococcal peritonitis.

View Article and Find Full Text PDF

Background: Genetic anaemias lead us to reflect on the classic 'trolley dilemma', when there are two choices but neither one is satisfactory. Either we do not treat anaemia and the patient suffers from chronic tiredness and fatigue, or we do treat it through blood transfusions, leading to iron overload, which is a quite harmful consequence.

Case Presentation: We present the case of a 34-year-old woman with Diamond-Blackfan anaemia (DBA).

View Article and Find Full Text PDF

Glucagonoma is a rare and slow-growing pancreatic tumor that usually manifests as glucagonoma syndrome. It is mainly characterized by a typical Dermatosis named necrolytic migratory erythema (NME), Diabetes and glucagon oversecretion. Deep vein thrombosis and Depression complete this set.

View Article and Find Full Text PDF

Vanishing bile duct syndrome is a rare acquired condition, characterized by progressive loss of intrahepatic bile ducts leading to ductopenia and cholestasis. It can be associated with infections, ischemia, drug adverse reactions, neoplasms, autoimmune disease, and allograft rejection. Prognosis is variable and depends on the etiology of bile duct injury.

View Article and Find Full Text PDF

New data concerning the management of autoimmune liver diseases have emerged since the last single-topic meeting sponsored by the Brazilian Society of Hepatology to draw recommendations about the diagnosis and treatment of autoimmune hepatitis (AIH), primary biliary cholangitis (PBC), primary sclerosing cholangitis (PSC), overlap syndromes of AIH, PBC and PSC and specific complications and topics concerning AIH and cholestatic liver diseases. This manuscript updates those previous recommendations according to the best evidence available in the literature up to now. The same panel of experts that took part in the first consensus document reviewed all recommendations, which were subsequently scrutinized by all members of the Brazilian Society of Hepatology using a web-based approach.

View Article and Find Full Text PDF

Background: Recently, changes in acute kidney injury (AKI) diagnostic criteria have been proposed (ICA-AKI criteria). However, in Brazil there is a paucity of data and analyses that evaluate AKI in patients with cirrhosis and determine the impact of the implemented AKI criteria changes. Therefore, this study sought to evaluate the incidence of AKI in patients with cirrhosis; to evaluate the agreement between traditional and ICA-AKI criteria; and to assess its clinical and laboratory characteristics, etiologies, risk factors and outcomes.

View Article and Find Full Text PDF

Lysosomal acid lipase deficiency is a poorly diagnosed genetic disorder, leading to accumulation of cholesterol esters and triglycerides in the liver, with progression to chronic liver disease, dyslipidemia, and cardiovascular complications. Lack of awareness on diagnosis of this condition may hamper specific treatment, which consists on enzymatic replacement. It may prevent the progression of liver disease and its complications.

View Article and Find Full Text PDF
Article Synopsis
  • The diagnosis of hepatic focal lesions is complex, as they can arise from various causes, including inflammation, infection, and cancer, with cardiac angiosarcoma being a rare metastatic source.
  • A 26-year-old man presented with respiratory symptoms and abnormal findings, but initial tests failed to identify the underlying issue, leading to an incomplete diagnosis and treatment for tuberculosis.
  • Ultimately, the patient experienced worsening liver lesions and fatal complications, revealing the crucial yet challenging nature of accurately diagnosing liver abnormalities.
View Article and Find Full Text PDF

Acute kidney injury is a common complication of cirrhosis, occurring in up to 20% of patients hospitalized with cirrhosis. This field is rapidly changing, with significant advances in classification, biomarkers and therapy over the last few years. On the behalf of the Brazilian Society of Hepatology, a panel of experts in Hepatology and Nephrology reviewed published evidence to integrate findings and develop the recommendations presented in this manuscript.

View Article and Find Full Text PDF